cscg22-gearboy

CSCG 2022 Challenge 'Gearboy'
git clone https://git.sinitax.com/sinitax/cscg22-gearboy
Log | Files | Refs | sfeed.txt

imgui_draw.cpp (177463B)


      1// dear imgui, v1.76
      2// (drawing and font code)
      3
      4/*
      5
      6Index of this file:
      7
      8// [SECTION] STB libraries implementation
      9// [SECTION] Style functions
     10// [SECTION] ImDrawList
     11// [SECTION] ImDrawListSplitter
     12// [SECTION] ImDrawData
     13// [SECTION] Helpers ShadeVertsXXX functions
     14// [SECTION] ImFontConfig
     15// [SECTION] ImFontAtlas
     16// [SECTION] ImFontAtlas glyph ranges helpers
     17// [SECTION] ImFontGlyphRangesBuilder
     18// [SECTION] ImFont
     19// [SECTION] ImGui Internal Render Helpers
     20// [SECTION] Decompression code
     21// [SECTION] Default font data (ProggyClean.ttf)
     22
     23*/
     24
     25#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
     26#define _CRT_SECURE_NO_WARNINGS
     27#endif
     28
     29#include "imgui.h"
     30#ifndef IMGUI_DISABLE
     31
     32#ifndef IMGUI_DEFINE_MATH_OPERATORS
     33#define IMGUI_DEFINE_MATH_OPERATORS
     34#endif
     35#include "imgui_internal.h"
     36
     37#include <stdio.h>      // vsnprintf, sscanf, printf
     38#if !defined(alloca)
     39#if defined(__GLIBC__) || defined(__sun) || defined(__CYGWIN__) || defined(__APPLE__) || defined(__SWITCH__)
     40#include <alloca.h>     // alloca (glibc uses <alloca.h>. Note that Cygwin may have _WIN32 defined, so the order matters here)
     41#elif defined(_WIN32)
     42#include <malloc.h>     // alloca
     43#if !defined(alloca)
     44#define alloca _alloca  // for clang with MS Codegen
     45#endif
     46#else
     47#include <stdlib.h>     // alloca
     48#endif
     49#endif
     50
     51// Visual Studio warnings
     52#ifdef _MSC_VER
     53#pragma warning (disable: 4127) // condition expression is constant
     54#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
     55#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
     56#endif
     57
     58// Clang/GCC warnings with -Weverything
     59#if defined(__clang__)
     60#pragma clang diagnostic ignored "-Wold-style-cast"         // warning : use of old-style cast                              // yes, they are more terse.
     61#pragma clang diagnostic ignored "-Wfloat-equal"            // warning : comparing floating point with == or != is unsafe   // storing and comparing against same constants ok.
     62#pragma clang diagnostic ignored "-Wglobal-constructors"    // warning : declaration requires a global destructor           // similar to above, not sure what the exact difference is.
     63#pragma clang diagnostic ignored "-Wsign-conversion"        // warning : implicit conversion changes signedness             //
     64#if __has_warning("-Wzero-as-null-pointer-constant")
     65#pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"  // warning : zero as null pointer constant              // some standard header variations use #define NULL 0
     66#endif
     67#if __has_warning("-Wcomma")
     68#pragma clang diagnostic ignored "-Wcomma"                  // warning : possible misuse of comma operator here             //
     69#endif
     70#if __has_warning("-Wreserved-id-macro")
     71#pragma clang diagnostic ignored "-Wreserved-id-macro"      // warning : macro name is a reserved identifier                //
     72#endif
     73#if __has_warning("-Wdouble-promotion")
     74#pragma clang diagnostic ignored "-Wdouble-promotion"       // warning: implicit conversion from 'float' to 'double' when passing argument to function  // using printf() is a misery with this as C++ va_arg ellipsis changes float to double.
     75#endif
     76#elif defined(__GNUC__)
     77#pragma GCC diagnostic ignored "-Wpragmas"                  // warning: unknown option after '#pragma GCC diagnostic' kind
     78#pragma GCC diagnostic ignored "-Wunused-function"          // warning: 'xxxx' defined but not used
     79#pragma GCC diagnostic ignored "-Wdouble-promotion"         // warning: implicit conversion from 'float' to 'double' when passing argument to function
     80#pragma GCC diagnostic ignored "-Wconversion"               // warning: conversion to 'xxxx' from 'xxxx' may alter its value
     81#pragma GCC diagnostic ignored "-Wstack-protector"          // warning: stack protector not protecting local variables: variable length buffer
     82#pragma GCC diagnostic ignored "-Wclass-memaccess"          // [__GNUC__ >= 8] warning: 'memset/memcpy' clearing/writing an object of type 'xxxx' with no trivial copy-assignment; use assignment or value-initialization instead
     83#endif
     84
     85//-------------------------------------------------------------------------
     86// [SECTION] STB libraries implementation
     87//-------------------------------------------------------------------------
     88
     89// Compile time options:
     90//#define IMGUI_STB_NAMESPACE           ImStb
     91//#define IMGUI_STB_TRUETYPE_FILENAME   "my_folder/stb_truetype.h"
     92//#define IMGUI_STB_RECT_PACK_FILENAME  "my_folder/stb_rect_pack.h"
     93//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
     94//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
     95
     96#ifdef IMGUI_STB_NAMESPACE
     97namespace IMGUI_STB_NAMESPACE
     98{
     99#endif
    100
    101#ifdef _MSC_VER
    102#pragma warning (push)
    103#pragma warning (disable: 4456)                             // declaration of 'xx' hides previous local declaration
    104#endif
    105
    106#if defined(__clang__)
    107#pragma clang diagnostic push
    108#pragma clang diagnostic ignored "-Wunused-function"
    109#pragma clang diagnostic ignored "-Wmissing-prototypes"
    110#pragma clang diagnostic ignored "-Wimplicit-fallthrough"
    111#pragma clang diagnostic ignored "-Wcast-qual"              // warning : cast from 'const xxxx *' to 'xxx *' drops const qualifier //
    112#endif
    113
    114#if defined(__GNUC__)
    115#pragma GCC diagnostic push
    116#pragma GCC diagnostic ignored "-Wtype-limits"              // warning: comparison is always true due to limited range of data type [-Wtype-limits]
    117#pragma GCC diagnostic ignored "-Wcast-qual"                // warning: cast from type 'const xxxx *' to type 'xxxx *' casts away qualifiers
    118#endif
    119
    120#ifndef STB_RECT_PACK_IMPLEMENTATION                        // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
    121#ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
    122#define STBRP_STATIC
    123#define STBRP_ASSERT(x)     do { IM_ASSERT(x); } while (0)
    124#define STBRP_SORT          ImQsort
    125#define STB_RECT_PACK_IMPLEMENTATION
    126#endif
    127#ifdef IMGUI_STB_RECT_PACK_FILENAME
    128#include IMGUI_STB_RECT_PACK_FILENAME
    129#else
    130#include "imstb_rectpack.h"
    131#endif
    132#endif
    133
    134#ifndef STB_TRUETYPE_IMPLEMENTATION                         // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
    135#ifndef IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
    136#define STBTT_malloc(x,u)   ((void)(u), IM_ALLOC(x))
    137#define STBTT_free(x,u)     ((void)(u), IM_FREE(x))
    138#define STBTT_assert(x)     do { IM_ASSERT(x); } while(0)
    139#define STBTT_fmod(x,y)     ImFmod(x,y)
    140#define STBTT_sqrt(x)       ImSqrt(x)
    141#define STBTT_pow(x,y)      ImPow(x,y)
    142#define STBTT_fabs(x)       ImFabs(x)
    143#define STBTT_ifloor(x)     ((int)ImFloorStd(x))
    144#define STBTT_iceil(x)      ((int)ImCeil(x))
    145#define STBTT_STATIC
    146#define STB_TRUETYPE_IMPLEMENTATION
    147#else
    148#define STBTT_DEF extern
    149#endif
    150#ifdef IMGUI_STB_TRUETYPE_FILENAME
    151#include IMGUI_STB_TRUETYPE_FILENAME
    152#else
    153#include "imstb_truetype.h"
    154#endif
    155#endif
    156
    157#if defined(__GNUC__)
    158#pragma GCC diagnostic pop
    159#endif
    160
    161#if defined(__clang__)
    162#pragma clang diagnostic pop
    163#endif
    164
    165#if defined(_MSC_VER)
    166#pragma warning (pop)
    167#endif
    168
    169#ifdef IMGUI_STB_NAMESPACE
    170} // namespace ImStb
    171using namespace IMGUI_STB_NAMESPACE;
    172#endif
    173
    174//-----------------------------------------------------------------------------
    175// [SECTION] Style functions
    176//-----------------------------------------------------------------------------
    177
    178void ImGui::StyleColorsDark(ImGuiStyle* dst)
    179{
    180    ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
    181    ImVec4* colors = style->Colors;
    182
    183    colors[ImGuiCol_Text]                   = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
    184    colors[ImGuiCol_TextDisabled]           = ImVec4(0.50f, 0.50f, 0.50f, 1.00f);
    185    colors[ImGuiCol_WindowBg]               = ImVec4(0.06f, 0.06f, 0.06f, 0.94f);
    186    colors[ImGuiCol_ChildBg]                = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
    187    colors[ImGuiCol_PopupBg]                = ImVec4(0.08f, 0.08f, 0.08f, 0.94f);
    188    colors[ImGuiCol_Border]                 = ImVec4(0.43f, 0.43f, 0.50f, 0.50f);
    189    colors[ImGuiCol_BorderShadow]           = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
    190    colors[ImGuiCol_FrameBg]                = ImVec4(0.16f, 0.29f, 0.48f, 0.54f);
    191    colors[ImGuiCol_FrameBgHovered]         = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
    192    colors[ImGuiCol_FrameBgActive]          = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
    193    colors[ImGuiCol_TitleBg]                = ImVec4(0.04f, 0.04f, 0.04f, 1.00f);
    194    colors[ImGuiCol_TitleBgActive]          = ImVec4(0.16f, 0.29f, 0.48f, 1.00f);
    195    colors[ImGuiCol_TitleBgCollapsed]       = ImVec4(0.00f, 0.00f, 0.00f, 0.51f);
    196    colors[ImGuiCol_MenuBarBg]              = ImVec4(0.14f, 0.14f, 0.14f, 1.00f);
    197    colors[ImGuiCol_ScrollbarBg]            = ImVec4(0.02f, 0.02f, 0.02f, 0.53f);
    198    colors[ImGuiCol_ScrollbarGrab]          = ImVec4(0.31f, 0.31f, 0.31f, 1.00f);
    199    colors[ImGuiCol_ScrollbarGrabHovered]   = ImVec4(0.41f, 0.41f, 0.41f, 1.00f);
    200    colors[ImGuiCol_ScrollbarGrabActive]    = ImVec4(0.51f, 0.51f, 0.51f, 1.00f);
    201    colors[ImGuiCol_CheckMark]              = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
    202    colors[ImGuiCol_SliderGrab]             = ImVec4(0.24f, 0.52f, 0.88f, 1.00f);
    203    colors[ImGuiCol_SliderGrabActive]       = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
    204    colors[ImGuiCol_Button]                 = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
    205    colors[ImGuiCol_ButtonHovered]          = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
    206    colors[ImGuiCol_ButtonActive]           = ImVec4(0.06f, 0.53f, 0.98f, 1.00f);
    207    colors[ImGuiCol_Header]                 = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);
    208    colors[ImGuiCol_HeaderHovered]          = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);
    209    colors[ImGuiCol_HeaderActive]           = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
    210    colors[ImGuiCol_Separator]              = colors[ImGuiCol_Border];
    211    colors[ImGuiCol_SeparatorHovered]       = ImVec4(0.10f, 0.40f, 0.75f, 0.78f);
    212    colors[ImGuiCol_SeparatorActive]        = ImVec4(0.10f, 0.40f, 0.75f, 1.00f);
    213    colors[ImGuiCol_ResizeGrip]             = ImVec4(0.26f, 0.59f, 0.98f, 0.25f);
    214    colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
    215    colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
    216    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.80f);
    217    colors[ImGuiCol_TabHovered]             = colors[ImGuiCol_HeaderHovered];
    218    colors[ImGuiCol_TabActive]              = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
    219    colors[ImGuiCol_TabUnfocused]           = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
    220    colors[ImGuiCol_TabUnfocusedActive]     = ImLerp(colors[ImGuiCol_TabActive],    colors[ImGuiCol_TitleBg], 0.40f);
    221    colors[ImGuiCol_PlotLines]              = ImVec4(0.61f, 0.61f, 0.61f, 1.00f);
    222    colors[ImGuiCol_PlotLinesHovered]       = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
    223    colors[ImGuiCol_PlotHistogram]          = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
    224    colors[ImGuiCol_PlotHistogramHovered]   = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
    225    colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
    226    colors[ImGuiCol_DragDropTarget]         = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
    227    colors[ImGuiCol_NavHighlight]           = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
    228    colors[ImGuiCol_NavWindowingHighlight]  = ImVec4(1.00f, 1.00f, 1.00f, 0.70f);
    229    colors[ImGuiCol_NavWindowingDimBg]      = ImVec4(0.80f, 0.80f, 0.80f, 0.20f);
    230    colors[ImGuiCol_ModalWindowDimBg]       = ImVec4(0.80f, 0.80f, 0.80f, 0.35f);
    231}
    232
    233void ImGui::StyleColorsClassic(ImGuiStyle* dst)
    234{
    235    ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
    236    ImVec4* colors = style->Colors;
    237
    238    colors[ImGuiCol_Text]                   = ImVec4(0.90f, 0.90f, 0.90f, 1.00f);
    239    colors[ImGuiCol_TextDisabled]           = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
    240    colors[ImGuiCol_WindowBg]               = ImVec4(0.00f, 0.00f, 0.00f, 0.70f);
    241    colors[ImGuiCol_ChildBg]                = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
    242    colors[ImGuiCol_PopupBg]                = ImVec4(0.11f, 0.11f, 0.14f, 0.92f);
    243    colors[ImGuiCol_Border]                 = ImVec4(0.50f, 0.50f, 0.50f, 0.50f);
    244    colors[ImGuiCol_BorderShadow]           = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
    245    colors[ImGuiCol_FrameBg]                = ImVec4(0.43f, 0.43f, 0.43f, 0.39f);
    246    colors[ImGuiCol_FrameBgHovered]         = ImVec4(0.47f, 0.47f, 0.69f, 0.40f);
    247    colors[ImGuiCol_FrameBgActive]          = ImVec4(0.42f, 0.41f, 0.64f, 0.69f);
    248    colors[ImGuiCol_TitleBg]                = ImVec4(0.27f, 0.27f, 0.54f, 0.83f);
    249    colors[ImGuiCol_TitleBgActive]          = ImVec4(0.32f, 0.32f, 0.63f, 0.87f);
    250    colors[ImGuiCol_TitleBgCollapsed]       = ImVec4(0.40f, 0.40f, 0.80f, 0.20f);
    251    colors[ImGuiCol_MenuBarBg]              = ImVec4(0.40f, 0.40f, 0.55f, 0.80f);
    252    colors[ImGuiCol_ScrollbarBg]            = ImVec4(0.20f, 0.25f, 0.30f, 0.60f);
    253    colors[ImGuiCol_ScrollbarGrab]          = ImVec4(0.40f, 0.40f, 0.80f, 0.30f);
    254    colors[ImGuiCol_ScrollbarGrabHovered]   = ImVec4(0.40f, 0.40f, 0.80f, 0.40f);
    255    colors[ImGuiCol_ScrollbarGrabActive]    = ImVec4(0.41f, 0.39f, 0.80f, 0.60f);
    256    colors[ImGuiCol_CheckMark]              = ImVec4(0.90f, 0.90f, 0.90f, 0.50f);
    257    colors[ImGuiCol_SliderGrab]             = ImVec4(1.00f, 1.00f, 1.00f, 0.30f);
    258    colors[ImGuiCol_SliderGrabActive]       = ImVec4(0.41f, 0.39f, 0.80f, 0.60f);
    259    colors[ImGuiCol_Button]                 = ImVec4(0.35f, 0.40f, 0.61f, 0.62f);
    260    colors[ImGuiCol_ButtonHovered]          = ImVec4(0.40f, 0.48f, 0.71f, 0.79f);
    261    colors[ImGuiCol_ButtonActive]           = ImVec4(0.46f, 0.54f, 0.80f, 1.00f);
    262    colors[ImGuiCol_Header]                 = ImVec4(0.40f, 0.40f, 0.90f, 0.45f);
    263    colors[ImGuiCol_HeaderHovered]          = ImVec4(0.45f, 0.45f, 0.90f, 0.80f);
    264    colors[ImGuiCol_HeaderActive]           = ImVec4(0.53f, 0.53f, 0.87f, 0.80f);
    265    colors[ImGuiCol_Separator]              = ImVec4(0.50f, 0.50f, 0.50f, 0.60f);
    266    colors[ImGuiCol_SeparatorHovered]       = ImVec4(0.60f, 0.60f, 0.70f, 1.00f);
    267    colors[ImGuiCol_SeparatorActive]        = ImVec4(0.70f, 0.70f, 0.90f, 1.00f);
    268    colors[ImGuiCol_ResizeGrip]             = ImVec4(1.00f, 1.00f, 1.00f, 0.16f);
    269    colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.78f, 0.82f, 1.00f, 0.60f);
    270    colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.78f, 0.82f, 1.00f, 0.90f);
    271    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.80f);
    272    colors[ImGuiCol_TabHovered]             = colors[ImGuiCol_HeaderHovered];
    273    colors[ImGuiCol_TabActive]              = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
    274    colors[ImGuiCol_TabUnfocused]           = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
    275    colors[ImGuiCol_TabUnfocusedActive]     = ImLerp(colors[ImGuiCol_TabActive],    colors[ImGuiCol_TitleBg], 0.40f);
    276    colors[ImGuiCol_PlotLines]              = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
    277    colors[ImGuiCol_PlotLinesHovered]       = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
    278    colors[ImGuiCol_PlotHistogram]          = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
    279    colors[ImGuiCol_PlotHistogramHovered]   = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
    280    colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.00f, 0.00f, 1.00f, 0.35f);
    281    colors[ImGuiCol_DragDropTarget]         = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
    282    colors[ImGuiCol_NavHighlight]           = colors[ImGuiCol_HeaderHovered];
    283    colors[ImGuiCol_NavWindowingHighlight]  = ImVec4(1.00f, 1.00f, 1.00f, 0.70f);
    284    colors[ImGuiCol_NavWindowingDimBg]      = ImVec4(0.80f, 0.80f, 0.80f, 0.20f);
    285    colors[ImGuiCol_ModalWindowDimBg]       = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);
    286}
    287
    288// Those light colors are better suited with a thicker font than the default one + FrameBorder
    289void ImGui::StyleColorsLight(ImGuiStyle* dst)
    290{
    291    ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
    292    ImVec4* colors = style->Colors;
    293
    294    colors[ImGuiCol_Text]                   = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
    295    colors[ImGuiCol_TextDisabled]           = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
    296    colors[ImGuiCol_WindowBg]               = ImVec4(0.94f, 0.94f, 0.94f, 1.00f);
    297    colors[ImGuiCol_ChildBg]                = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
    298    colors[ImGuiCol_PopupBg]                = ImVec4(1.00f, 1.00f, 1.00f, 0.98f);
    299    colors[ImGuiCol_Border]                 = ImVec4(0.00f, 0.00f, 0.00f, 0.30f);
    300    colors[ImGuiCol_BorderShadow]           = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
    301    colors[ImGuiCol_FrameBg]                = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
    302    colors[ImGuiCol_FrameBgHovered]         = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
    303    colors[ImGuiCol_FrameBgActive]          = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
    304    colors[ImGuiCol_TitleBg]                = ImVec4(0.96f, 0.96f, 0.96f, 1.00f);
    305    colors[ImGuiCol_TitleBgActive]          = ImVec4(0.82f, 0.82f, 0.82f, 1.00f);
    306    colors[ImGuiCol_TitleBgCollapsed]       = ImVec4(1.00f, 1.00f, 1.00f, 0.51f);
    307    colors[ImGuiCol_MenuBarBg]              = ImVec4(0.86f, 0.86f, 0.86f, 1.00f);
    308    colors[ImGuiCol_ScrollbarBg]            = ImVec4(0.98f, 0.98f, 0.98f, 0.53f);
    309    colors[ImGuiCol_ScrollbarGrab]          = ImVec4(0.69f, 0.69f, 0.69f, 0.80f);
    310    colors[ImGuiCol_ScrollbarGrabHovered]   = ImVec4(0.49f, 0.49f, 0.49f, 0.80f);
    311    colors[ImGuiCol_ScrollbarGrabActive]    = ImVec4(0.49f, 0.49f, 0.49f, 1.00f);
    312    colors[ImGuiCol_CheckMark]              = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
    313    colors[ImGuiCol_SliderGrab]             = ImVec4(0.26f, 0.59f, 0.98f, 0.78f);
    314    colors[ImGuiCol_SliderGrabActive]       = ImVec4(0.46f, 0.54f, 0.80f, 0.60f);
    315    colors[ImGuiCol_Button]                 = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
    316    colors[ImGuiCol_ButtonHovered]          = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
    317    colors[ImGuiCol_ButtonActive]           = ImVec4(0.06f, 0.53f, 0.98f, 1.00f);
    318    colors[ImGuiCol_Header]                 = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);
    319    colors[ImGuiCol_HeaderHovered]          = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);
    320    colors[ImGuiCol_HeaderActive]           = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
    321    colors[ImGuiCol_Separator]              = ImVec4(0.39f, 0.39f, 0.39f, 0.62f);
    322    colors[ImGuiCol_SeparatorHovered]       = ImVec4(0.14f, 0.44f, 0.80f, 0.78f);
    323    colors[ImGuiCol_SeparatorActive]        = ImVec4(0.14f, 0.44f, 0.80f, 1.00f);
    324    colors[ImGuiCol_ResizeGrip]             = ImVec4(0.80f, 0.80f, 0.80f, 0.56f);
    325    colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
    326    colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
    327    colors[ImGuiCol_Tab]                    = ImLerp(colors[ImGuiCol_Header],       colors[ImGuiCol_TitleBgActive], 0.90f);
    328    colors[ImGuiCol_TabHovered]             = colors[ImGuiCol_HeaderHovered];
    329    colors[ImGuiCol_TabActive]              = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);
    330    colors[ImGuiCol_TabUnfocused]           = ImLerp(colors[ImGuiCol_Tab],          colors[ImGuiCol_TitleBg], 0.80f);
    331    colors[ImGuiCol_TabUnfocusedActive]     = ImLerp(colors[ImGuiCol_TabActive],    colors[ImGuiCol_TitleBg], 0.40f);
    332    colors[ImGuiCol_PlotLines]              = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);
    333    colors[ImGuiCol_PlotLinesHovered]       = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
    334    colors[ImGuiCol_PlotHistogram]          = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
    335    colors[ImGuiCol_PlotHistogramHovered]   = ImVec4(1.00f, 0.45f, 0.00f, 1.00f);
    336    colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
    337    colors[ImGuiCol_DragDropTarget]         = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
    338    colors[ImGuiCol_NavHighlight]           = colors[ImGuiCol_HeaderHovered];
    339    colors[ImGuiCol_NavWindowingHighlight]  = ImVec4(0.70f, 0.70f, 0.70f, 0.70f);
    340    colors[ImGuiCol_NavWindowingDimBg]      = ImVec4(0.20f, 0.20f, 0.20f, 0.20f);
    341    colors[ImGuiCol_ModalWindowDimBg]       = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);
    342}
    343
    344//-----------------------------------------------------------------------------
    345// ImDrawList
    346//-----------------------------------------------------------------------------
    347
    348ImDrawListSharedData::ImDrawListSharedData()
    349{
    350    Font = NULL;
    351    FontSize = 0.0f;
    352    CurveTessellationTol = 0.0f;
    353    CircleSegmentMaxError = 0.0f;
    354    ClipRectFullscreen = ImVec4(-8192.0f, -8192.0f, +8192.0f, +8192.0f);
    355    InitialFlags = ImDrawListFlags_None;
    356
    357    // Lookup tables
    358    for (int i = 0; i < IM_ARRAYSIZE(ArcFastVtx); i++)
    359    {
    360        const float a = ((float)i * 2 * IM_PI) / (float)IM_ARRAYSIZE(ArcFastVtx);
    361        ArcFastVtx[i] = ImVec2(ImCos(a), ImSin(a));
    362    }
    363    memset(CircleSegmentCounts, 0, sizeof(CircleSegmentCounts)); // This will be set by SetCircleSegmentMaxError()
    364}
    365
    366void ImDrawListSharedData::SetCircleSegmentMaxError(float max_error)
    367{
    368    if (CircleSegmentMaxError == max_error)
    369        return;
    370    CircleSegmentMaxError = max_error;
    371    for (int i = 0; i < IM_ARRAYSIZE(CircleSegmentCounts); i++)
    372    {
    373        const float radius = i + 1.0f;
    374        const int segment_count = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, CircleSegmentMaxError);
    375        CircleSegmentCounts[i] = (ImU8)ImMin(segment_count, 255);
    376    }
    377}
    378
    379void ImDrawList::Clear()
    380{
    381    CmdBuffer.resize(0);
    382    IdxBuffer.resize(0);
    383    VtxBuffer.resize(0);
    384    Flags = _Data ? _Data->InitialFlags : ImDrawListFlags_None;
    385    _VtxCurrentOffset = 0;
    386    _VtxCurrentIdx = 0;
    387    _VtxWritePtr = NULL;
    388    _IdxWritePtr = NULL;
    389    _ClipRectStack.resize(0);
    390    _TextureIdStack.resize(0);
    391    _Path.resize(0);
    392    _Splitter.Clear();
    393}
    394
    395void ImDrawList::ClearFreeMemory()
    396{
    397    CmdBuffer.clear();
    398    IdxBuffer.clear();
    399    VtxBuffer.clear();
    400    _VtxCurrentIdx = 0;
    401    _VtxWritePtr = NULL;
    402    _IdxWritePtr = NULL;
    403    _ClipRectStack.clear();
    404    _TextureIdStack.clear();
    405    _Path.clear();
    406    _Splitter.ClearFreeMemory();
    407}
    408
    409ImDrawList* ImDrawList::CloneOutput() const
    410{
    411    ImDrawList* dst = IM_NEW(ImDrawList(_Data));
    412    dst->CmdBuffer = CmdBuffer;
    413    dst->IdxBuffer = IdxBuffer;
    414    dst->VtxBuffer = VtxBuffer;
    415    dst->Flags = Flags;
    416    return dst;
    417}
    418
    419// Using macros because C++ is a terrible language, we want guaranteed inline, no code in header, and no overhead in Debug builds
    420#define GetCurrentClipRect()    (_ClipRectStack.Size ? _ClipRectStack.Data[_ClipRectStack.Size-1]  : _Data->ClipRectFullscreen)
    421#define GetCurrentTextureId()   (_TextureIdStack.Size ? _TextureIdStack.Data[_TextureIdStack.Size-1] : (ImTextureID)NULL)
    422
    423void ImDrawList::AddDrawCmd()
    424{
    425    ImDrawCmd draw_cmd;
    426    draw_cmd.ClipRect = GetCurrentClipRect();
    427    draw_cmd.TextureId = GetCurrentTextureId();
    428    draw_cmd.VtxOffset = _VtxCurrentOffset;
    429    draw_cmd.IdxOffset = IdxBuffer.Size;
    430
    431    IM_ASSERT(draw_cmd.ClipRect.x <= draw_cmd.ClipRect.z && draw_cmd.ClipRect.y <= draw_cmd.ClipRect.w);
    432    CmdBuffer.push_back(draw_cmd);
    433}
    434
    435void ImDrawList::AddCallback(ImDrawCallback callback, void* callback_data)
    436{
    437    ImDrawCmd* current_cmd = CmdBuffer.Size ? &CmdBuffer.back() : NULL;
    438    if (!current_cmd || current_cmd->ElemCount != 0 || current_cmd->UserCallback != NULL)
    439    {
    440        AddDrawCmd();
    441        current_cmd = &CmdBuffer.back();
    442    }
    443    current_cmd->UserCallback = callback;
    444    current_cmd->UserCallbackData = callback_data;
    445
    446    AddDrawCmd(); // Force a new command after us (see comment below)
    447}
    448
    449// Our scheme may appears a bit unusual, basically we want the most-common calls AddLine AddRect etc. to not have to perform any check so we always have a command ready in the stack.
    450// The cost of figuring out if a new command has to be added or if we can merge is paid in those Update** functions only.
    451void ImDrawList::UpdateClipRect()
    452{
    453    // If current command is used with different settings we need to add a new command
    454    const ImVec4 curr_clip_rect = GetCurrentClipRect();
    455    ImDrawCmd* curr_cmd = CmdBuffer.Size > 0 ? &CmdBuffer.Data[CmdBuffer.Size-1] : NULL;
    456    if (!curr_cmd || (curr_cmd->ElemCount != 0 && memcmp(&curr_cmd->ClipRect, &curr_clip_rect, sizeof(ImVec4)) != 0) || curr_cmd->UserCallback != NULL)
    457    {
    458        AddDrawCmd();
    459        return;
    460    }
    461
    462    // Try to merge with previous command if it matches, else use current command
    463    ImDrawCmd* prev_cmd = CmdBuffer.Size > 1 ? curr_cmd - 1 : NULL;
    464    if (curr_cmd->ElemCount == 0 && prev_cmd && memcmp(&prev_cmd->ClipRect, &curr_clip_rect, sizeof(ImVec4)) == 0 && prev_cmd->TextureId == GetCurrentTextureId() && prev_cmd->UserCallback == NULL)
    465        CmdBuffer.pop_back();
    466    else
    467        curr_cmd->ClipRect = curr_clip_rect;
    468}
    469
    470void ImDrawList::UpdateTextureID()
    471{
    472    // If current command is used with different settings we need to add a new command
    473    const ImTextureID curr_texture_id = GetCurrentTextureId();
    474    ImDrawCmd* curr_cmd = CmdBuffer.Size ? &CmdBuffer.back() : NULL;
    475    if (!curr_cmd || (curr_cmd->ElemCount != 0 && curr_cmd->TextureId != curr_texture_id) || curr_cmd->UserCallback != NULL)
    476    {
    477        AddDrawCmd();
    478        return;
    479    }
    480
    481    // Try to merge with previous command if it matches, else use current command
    482    ImDrawCmd* prev_cmd = CmdBuffer.Size > 1 ? curr_cmd - 1 : NULL;
    483    if (curr_cmd->ElemCount == 0 && prev_cmd && prev_cmd->TextureId == curr_texture_id && memcmp(&prev_cmd->ClipRect, &GetCurrentClipRect(), sizeof(ImVec4)) == 0 && prev_cmd->UserCallback == NULL)
    484        CmdBuffer.pop_back();
    485    else
    486        curr_cmd->TextureId = curr_texture_id;
    487}
    488
    489#undef GetCurrentClipRect
    490#undef GetCurrentTextureId
    491
    492// Render-level scissoring. This is passed down to your render function but not used for CPU-side coarse clipping. Prefer using higher-level ImGui::PushClipRect() to affect logic (hit-testing and widget culling)
    493void ImDrawList::PushClipRect(ImVec2 cr_min, ImVec2 cr_max, bool intersect_with_current_clip_rect)
    494{
    495    ImVec4 cr(cr_min.x, cr_min.y, cr_max.x, cr_max.y);
    496    if (intersect_with_current_clip_rect && _ClipRectStack.Size)
    497    {
    498        ImVec4 current = _ClipRectStack.Data[_ClipRectStack.Size-1];
    499        if (cr.x < current.x) cr.x = current.x;
    500        if (cr.y < current.y) cr.y = current.y;
    501        if (cr.z > current.z) cr.z = current.z;
    502        if (cr.w > current.w) cr.w = current.w;
    503    }
    504    cr.z = ImMax(cr.x, cr.z);
    505    cr.w = ImMax(cr.y, cr.w);
    506
    507    _ClipRectStack.push_back(cr);
    508    UpdateClipRect();
    509}
    510
    511void ImDrawList::PushClipRectFullScreen()
    512{
    513    PushClipRect(ImVec2(_Data->ClipRectFullscreen.x, _Data->ClipRectFullscreen.y), ImVec2(_Data->ClipRectFullscreen.z, _Data->ClipRectFullscreen.w));
    514}
    515
    516void ImDrawList::PopClipRect()
    517{
    518    IM_ASSERT(_ClipRectStack.Size > 0);
    519    _ClipRectStack.pop_back();
    520    UpdateClipRect();
    521}
    522
    523void ImDrawList::PushTextureID(ImTextureID texture_id)
    524{
    525    _TextureIdStack.push_back(texture_id);
    526    UpdateTextureID();
    527}
    528
    529void ImDrawList::PopTextureID()
    530{
    531    IM_ASSERT(_TextureIdStack.Size > 0);
    532    _TextureIdStack.pop_back();
    533    UpdateTextureID();
    534}
    535
    536// Reserve space for a number of vertices and indices.
    537// You must finish filling your reserved data before calling PrimReserve() again, as it may reallocate or
    538// submit the intermediate results. PrimUnreserve() can be used to release unused allocations.
    539void ImDrawList::PrimReserve(int idx_count, int vtx_count)
    540{
    541    // Large mesh support (when enabled)
    542    IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0);
    543    if (sizeof(ImDrawIdx) == 2 && (_VtxCurrentIdx + vtx_count >= (1 << 16)) && (Flags & ImDrawListFlags_AllowVtxOffset))
    544    {
    545        _VtxCurrentOffset = VtxBuffer.Size;
    546        _VtxCurrentIdx = 0;
    547        AddDrawCmd();
    548    }
    549
    550    ImDrawCmd& draw_cmd = CmdBuffer.Data[CmdBuffer.Size - 1];
    551    draw_cmd.ElemCount += idx_count;
    552
    553    int vtx_buffer_old_size = VtxBuffer.Size;
    554    VtxBuffer.resize(vtx_buffer_old_size + vtx_count);
    555    _VtxWritePtr = VtxBuffer.Data + vtx_buffer_old_size;
    556
    557    int idx_buffer_old_size = IdxBuffer.Size;
    558    IdxBuffer.resize(idx_buffer_old_size + idx_count);
    559    _IdxWritePtr = IdxBuffer.Data + idx_buffer_old_size;
    560}
    561
    562// Release the a number of reserved vertices/indices from the end of the last reservation made with PrimReserve().
    563void ImDrawList::PrimUnreserve(int idx_count, int vtx_count)
    564{
    565    IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0);
    566
    567    ImDrawCmd& draw_cmd = CmdBuffer.Data[CmdBuffer.Size - 1];
    568    draw_cmd.ElemCount -= idx_count;
    569    VtxBuffer.shrink(VtxBuffer.Size - vtx_count);
    570    IdxBuffer.shrink(IdxBuffer.Size - idx_count);
    571}
    572
    573// Fully unrolled with inline call to keep our debug builds decently fast.
    574void ImDrawList::PrimRect(const ImVec2& a, const ImVec2& c, ImU32 col)
    575{
    576    ImVec2 b(c.x, a.y), d(a.x, c.y), uv(_Data->TexUvWhitePixel);
    577    ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
    578    _IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);
    579    _IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);
    580    _VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;
    581    _VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col;
    582    _VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col;
    583    _VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv; _VtxWritePtr[3].col = col;
    584    _VtxWritePtr += 4;
    585    _VtxCurrentIdx += 4;
    586    _IdxWritePtr += 6;
    587}
    588
    589void ImDrawList::PrimRectUV(const ImVec2& a, const ImVec2& c, const ImVec2& uv_a, const ImVec2& uv_c, ImU32 col)
    590{
    591    ImVec2 b(c.x, a.y), d(a.x, c.y), uv_b(uv_c.x, uv_a.y), uv_d(uv_a.x, uv_c.y);
    592    ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
    593    _IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);
    594    _IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);
    595    _VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv_a; _VtxWritePtr[0].col = col;
    596    _VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv_b; _VtxWritePtr[1].col = col;
    597    _VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv_c; _VtxWritePtr[2].col = col;
    598    _VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv_d; _VtxWritePtr[3].col = col;
    599    _VtxWritePtr += 4;
    600    _VtxCurrentIdx += 4;
    601    _IdxWritePtr += 6;
    602}
    603
    604void ImDrawList::PrimQuadUV(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, const ImVec2& uv_a, const ImVec2& uv_b, const ImVec2& uv_c, const ImVec2& uv_d, ImU32 col)
    605{
    606    ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
    607    _IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);
    608    _IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);
    609    _VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv_a; _VtxWritePtr[0].col = col;
    610    _VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv_b; _VtxWritePtr[1].col = col;
    611    _VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv_c; _VtxWritePtr[2].col = col;
    612    _VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv_d; _VtxWritePtr[3].col = col;
    613    _VtxWritePtr += 4;
    614    _VtxCurrentIdx += 4;
    615    _IdxWritePtr += 6;
    616}
    617
    618// On AddPolyline() and AddConvexPolyFilled() we intentionally avoid using ImVec2 and superflous function calls to optimize debug/non-inlined builds.
    619// Those macros expects l-values.
    620#define IM_NORMALIZE2F_OVER_ZERO(VX,VY)     do { float d2 = VX*VX + VY*VY; if (d2 > 0.0f) { float inv_len = 1.0f / ImSqrt(d2); VX *= inv_len; VY *= inv_len; } } while (0)
    621#define IM_FIXNORMAL2F(VX,VY)               do { float d2 = VX*VX + VY*VY; if (d2 < 0.5f) d2 = 0.5f; float inv_lensq = 1.0f / d2; VX *= inv_lensq; VY *= inv_lensq; } while (0)
    622
    623// TODO: Thickness anti-aliased lines cap are missing their AA fringe.
    624// We avoid using the ImVec2 math operators here to reduce cost to a minimum for debug/non-inlined builds.
    625void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32 col, bool closed, float thickness)
    626{
    627    if (points_count < 2)
    628        return;
    629
    630    const ImVec2 uv = _Data->TexUvWhitePixel;
    631
    632    int count = points_count;
    633    if (!closed)
    634        count = points_count-1;
    635
    636    const bool thick_line = thickness > 1.0f;
    637    if (Flags & ImDrawListFlags_AntiAliasedLines)
    638    {
    639        // Anti-aliased stroke
    640        const float AA_SIZE = 1.0f;
    641        const ImU32 col_trans = col & ~IM_COL32_A_MASK;
    642
    643        const int idx_count = thick_line ? count*18 : count*12;
    644        const int vtx_count = thick_line ? points_count*4 : points_count*3;
    645        PrimReserve(idx_count, vtx_count);
    646
    647        // Temporary buffer
    648        ImVec2* temp_normals = (ImVec2*)alloca(points_count * (thick_line ? 5 : 3) * sizeof(ImVec2)); //-V630
    649        ImVec2* temp_points = temp_normals + points_count;
    650
    651        for (int i1 = 0; i1 < count; i1++)
    652        {
    653            const int i2 = (i1+1) == points_count ? 0 : i1+1;
    654            float dx = points[i2].x - points[i1].x;
    655            float dy = points[i2].y - points[i1].y;
    656            IM_NORMALIZE2F_OVER_ZERO(dx, dy);
    657            temp_normals[i1].x = dy;
    658            temp_normals[i1].y = -dx;
    659        }
    660        if (!closed)
    661            temp_normals[points_count-1] = temp_normals[points_count-2];
    662
    663        if (!thick_line)
    664        {
    665            if (!closed)
    666            {
    667                temp_points[0] = points[0] + temp_normals[0] * AA_SIZE;
    668                temp_points[1] = points[0] - temp_normals[0] * AA_SIZE;
    669                temp_points[(points_count-1)*2+0] = points[points_count-1] + temp_normals[points_count-1] * AA_SIZE;
    670                temp_points[(points_count-1)*2+1] = points[points_count-1] - temp_normals[points_count-1] * AA_SIZE;
    671            }
    672
    673            // FIXME-OPT: Merge the different loops, possibly remove the temporary buffer.
    674            unsigned int idx1 = _VtxCurrentIdx;
    675            for (int i1 = 0; i1 < count; i1++)
    676            {
    677                const int i2 = (i1+1) == points_count ? 0 : i1+1;
    678                unsigned int idx2 = (i1+1) == points_count ? _VtxCurrentIdx : idx1+3;
    679
    680                // Average normals
    681                float dm_x = (temp_normals[i1].x + temp_normals[i2].x) * 0.5f;
    682                float dm_y = (temp_normals[i1].y + temp_normals[i2].y) * 0.5f;
    683                IM_FIXNORMAL2F(dm_x, dm_y);
    684                dm_x *= AA_SIZE;
    685                dm_y *= AA_SIZE;
    686
    687                // Add temporary vertexes
    688                ImVec2* out_vtx = &temp_points[i2*2];
    689                out_vtx[0].x = points[i2].x + dm_x;
    690                out_vtx[0].y = points[i2].y + dm_y;
    691                out_vtx[1].x = points[i2].x - dm_x;
    692                out_vtx[1].y = points[i2].y - dm_y;
    693
    694                // Add indexes
    695                _IdxWritePtr[0] = (ImDrawIdx)(idx2+0); _IdxWritePtr[1] = (ImDrawIdx)(idx1+0); _IdxWritePtr[2] = (ImDrawIdx)(idx1+2);
    696                _IdxWritePtr[3] = (ImDrawIdx)(idx1+2); _IdxWritePtr[4] = (ImDrawIdx)(idx2+2); _IdxWritePtr[5] = (ImDrawIdx)(idx2+0);
    697                _IdxWritePtr[6] = (ImDrawIdx)(idx2+1); _IdxWritePtr[7] = (ImDrawIdx)(idx1+1); _IdxWritePtr[8] = (ImDrawIdx)(idx1+0);
    698                _IdxWritePtr[9] = (ImDrawIdx)(idx1+0); _IdxWritePtr[10]= (ImDrawIdx)(idx2+0); _IdxWritePtr[11]= (ImDrawIdx)(idx2+1);
    699                _IdxWritePtr += 12;
    700
    701                idx1 = idx2;
    702            }
    703
    704            // Add vertexes
    705            for (int i = 0; i < points_count; i++)
    706            {
    707                _VtxWritePtr[0].pos = points[i];          _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;
    708                _VtxWritePtr[1].pos = temp_points[i*2+0]; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col_trans;
    709                _VtxWritePtr[2].pos = temp_points[i*2+1]; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col_trans;
    710                _VtxWritePtr += 3;
    711            }
    712        }
    713        else
    714        {
    715            const float half_inner_thickness = (thickness - AA_SIZE) * 0.5f;
    716            if (!closed)
    717            {
    718                temp_points[0] = points[0] + temp_normals[0] * (half_inner_thickness + AA_SIZE);
    719                temp_points[1] = points[0] + temp_normals[0] * (half_inner_thickness);
    720                temp_points[2] = points[0] - temp_normals[0] * (half_inner_thickness);
    721                temp_points[3] = points[0] - temp_normals[0] * (half_inner_thickness + AA_SIZE);
    722                temp_points[(points_count-1)*4+0] = points[points_count-1] + temp_normals[points_count-1] * (half_inner_thickness + AA_SIZE);
    723                temp_points[(points_count-1)*4+1] = points[points_count-1] + temp_normals[points_count-1] * (half_inner_thickness);
    724                temp_points[(points_count-1)*4+2] = points[points_count-1] - temp_normals[points_count-1] * (half_inner_thickness);
    725                temp_points[(points_count-1)*4+3] = points[points_count-1] - temp_normals[points_count-1] * (half_inner_thickness + AA_SIZE);
    726            }
    727
    728            // FIXME-OPT: Merge the different loops, possibly remove the temporary buffer.
    729            unsigned int idx1 = _VtxCurrentIdx;
    730            for (int i1 = 0; i1 < count; i1++)
    731            {
    732                const int i2 = (i1+1) == points_count ? 0 : i1+1;
    733                unsigned int idx2 = (i1+1) == points_count ? _VtxCurrentIdx : idx1+4;
    734
    735                // Average normals
    736                float dm_x = (temp_normals[i1].x + temp_normals[i2].x) * 0.5f;
    737                float dm_y = (temp_normals[i1].y + temp_normals[i2].y) * 0.5f;
    738                IM_FIXNORMAL2F(dm_x, dm_y);
    739                float dm_out_x = dm_x * (half_inner_thickness + AA_SIZE);
    740                float dm_out_y = dm_y * (half_inner_thickness + AA_SIZE);
    741                float dm_in_x = dm_x * half_inner_thickness;
    742                float dm_in_y = dm_y * half_inner_thickness;
    743
    744                // Add temporary vertexes
    745                ImVec2* out_vtx = &temp_points[i2*4];
    746                out_vtx[0].x = points[i2].x + dm_out_x;
    747                out_vtx[0].y = points[i2].y + dm_out_y;
    748                out_vtx[1].x = points[i2].x + dm_in_x;
    749                out_vtx[1].y = points[i2].y + dm_in_y;
    750                out_vtx[2].x = points[i2].x - dm_in_x;
    751                out_vtx[2].y = points[i2].y - dm_in_y;
    752                out_vtx[3].x = points[i2].x - dm_out_x;
    753                out_vtx[3].y = points[i2].y - dm_out_y;
    754
    755                // Add indexes
    756                _IdxWritePtr[0]  = (ImDrawIdx)(idx2+1); _IdxWritePtr[1]  = (ImDrawIdx)(idx1+1); _IdxWritePtr[2]  = (ImDrawIdx)(idx1+2);
    757                _IdxWritePtr[3]  = (ImDrawIdx)(idx1+2); _IdxWritePtr[4]  = (ImDrawIdx)(idx2+2); _IdxWritePtr[5]  = (ImDrawIdx)(idx2+1);
    758                _IdxWritePtr[6]  = (ImDrawIdx)(idx2+1); _IdxWritePtr[7]  = (ImDrawIdx)(idx1+1); _IdxWritePtr[8]  = (ImDrawIdx)(idx1+0);
    759                _IdxWritePtr[9]  = (ImDrawIdx)(idx1+0); _IdxWritePtr[10] = (ImDrawIdx)(idx2+0); _IdxWritePtr[11] = (ImDrawIdx)(idx2+1);
    760                _IdxWritePtr[12] = (ImDrawIdx)(idx2+2); _IdxWritePtr[13] = (ImDrawIdx)(idx1+2); _IdxWritePtr[14] = (ImDrawIdx)(idx1+3);
    761                _IdxWritePtr[15] = (ImDrawIdx)(idx1+3); _IdxWritePtr[16] = (ImDrawIdx)(idx2+3); _IdxWritePtr[17] = (ImDrawIdx)(idx2+2);
    762                _IdxWritePtr += 18;
    763
    764                idx1 = idx2;
    765            }
    766
    767            // Add vertexes
    768            for (int i = 0; i < points_count; i++)
    769            {
    770                _VtxWritePtr[0].pos = temp_points[i*4+0]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col_trans;
    771                _VtxWritePtr[1].pos = temp_points[i*4+1]; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col;
    772                _VtxWritePtr[2].pos = temp_points[i*4+2]; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col;
    773                _VtxWritePtr[3].pos = temp_points[i*4+3]; _VtxWritePtr[3].uv = uv; _VtxWritePtr[3].col = col_trans;
    774                _VtxWritePtr += 4;
    775            }
    776        }
    777        _VtxCurrentIdx += (ImDrawIdx)vtx_count;
    778    }
    779    else
    780    {
    781        // Non Anti-aliased Stroke
    782        const int idx_count = count*6;
    783        const int vtx_count = count*4;      // FIXME-OPT: Not sharing edges
    784        PrimReserve(idx_count, vtx_count);
    785
    786        for (int i1 = 0; i1 < count; i1++)
    787        {
    788            const int i2 = (i1+1) == points_count ? 0 : i1+1;
    789            const ImVec2& p1 = points[i1];
    790            const ImVec2& p2 = points[i2];
    791
    792            float dx = p2.x - p1.x;
    793            float dy = p2.y - p1.y;
    794            IM_NORMALIZE2F_OVER_ZERO(dx, dy);
    795            dx *= (thickness * 0.5f);
    796            dy *= (thickness * 0.5f);
    797
    798            _VtxWritePtr[0].pos.x = p1.x + dy; _VtxWritePtr[0].pos.y = p1.y - dx; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;
    799            _VtxWritePtr[1].pos.x = p2.x + dy; _VtxWritePtr[1].pos.y = p2.y - dx; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col;
    800            _VtxWritePtr[2].pos.x = p2.x - dy; _VtxWritePtr[2].pos.y = p2.y + dx; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col;
    801            _VtxWritePtr[3].pos.x = p1.x - dy; _VtxWritePtr[3].pos.y = p1.y + dx; _VtxWritePtr[3].uv = uv; _VtxWritePtr[3].col = col;
    802            _VtxWritePtr += 4;
    803
    804            _IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx+1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx+2);
    805            _IdxWritePtr[3] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[4] = (ImDrawIdx)(_VtxCurrentIdx+2); _IdxWritePtr[5] = (ImDrawIdx)(_VtxCurrentIdx+3);
    806            _IdxWritePtr += 6;
    807            _VtxCurrentIdx += 4;
    808        }
    809    }
    810}
    811
    812// We intentionally avoid using ImVec2 and its math operators here to reduce cost to a minimum for debug/non-inlined builds.
    813void ImDrawList::AddConvexPolyFilled(const ImVec2* points, const int points_count, ImU32 col)
    814{
    815    if (points_count < 3)
    816        return;
    817
    818    const ImVec2 uv = _Data->TexUvWhitePixel;
    819
    820    if (Flags & ImDrawListFlags_AntiAliasedFill)
    821    {
    822        // Anti-aliased Fill
    823        const float AA_SIZE = 1.0f;
    824        const ImU32 col_trans = col & ~IM_COL32_A_MASK;
    825        const int idx_count = (points_count-2)*3 + points_count*6;
    826        const int vtx_count = (points_count*2);
    827        PrimReserve(idx_count, vtx_count);
    828
    829        // Add indexes for fill
    830        unsigned int vtx_inner_idx = _VtxCurrentIdx;
    831        unsigned int vtx_outer_idx = _VtxCurrentIdx+1;
    832        for (int i = 2; i < points_count; i++)
    833        {
    834            _IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx+((i-1)<<1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_inner_idx+(i<<1));
    835            _IdxWritePtr += 3;
    836        }
    837
    838        // Compute normals
    839        ImVec2* temp_normals = (ImVec2*)alloca(points_count * sizeof(ImVec2)); //-V630
    840        for (int i0 = points_count-1, i1 = 0; i1 < points_count; i0 = i1++)
    841        {
    842            const ImVec2& p0 = points[i0];
    843            const ImVec2& p1 = points[i1];
    844            float dx = p1.x - p0.x;
    845            float dy = p1.y - p0.y;
    846            IM_NORMALIZE2F_OVER_ZERO(dx, dy);
    847            temp_normals[i0].x = dy;
    848            temp_normals[i0].y = -dx;
    849        }
    850
    851        for (int i0 = points_count-1, i1 = 0; i1 < points_count; i0 = i1++)
    852        {
    853            // Average normals
    854            const ImVec2& n0 = temp_normals[i0];
    855            const ImVec2& n1 = temp_normals[i1];
    856            float dm_x = (n0.x + n1.x) * 0.5f;
    857            float dm_y = (n0.y + n1.y) * 0.5f;
    858            IM_FIXNORMAL2F(dm_x, dm_y);
    859            dm_x *= AA_SIZE * 0.5f;
    860            dm_y *= AA_SIZE * 0.5f;
    861
    862            // Add vertices
    863            _VtxWritePtr[0].pos.x = (points[i1].x - dm_x); _VtxWritePtr[0].pos.y = (points[i1].y - dm_y); _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;        // Inner
    864            _VtxWritePtr[1].pos.x = (points[i1].x + dm_x); _VtxWritePtr[1].pos.y = (points[i1].y + dm_y); _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col_trans;  // Outer
    865            _VtxWritePtr += 2;
    866
    867            // Add indexes for fringes
    868            _IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx+(i1<<1)); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx+(i0<<1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_outer_idx+(i0<<1));
    869            _IdxWritePtr[3] = (ImDrawIdx)(vtx_outer_idx+(i0<<1)); _IdxWritePtr[4] = (ImDrawIdx)(vtx_outer_idx+(i1<<1)); _IdxWritePtr[5] = (ImDrawIdx)(vtx_inner_idx+(i1<<1));
    870            _IdxWritePtr += 6;
    871        }
    872        _VtxCurrentIdx += (ImDrawIdx)vtx_count;
    873    }
    874    else
    875    {
    876        // Non Anti-aliased Fill
    877        const int idx_count = (points_count-2)*3;
    878        const int vtx_count = points_count;
    879        PrimReserve(idx_count, vtx_count);
    880        for (int i = 0; i < vtx_count; i++)
    881        {
    882            _VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;
    883            _VtxWritePtr++;
    884        }
    885        for (int i = 2; i < points_count; i++)
    886        {
    887            _IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx+i-1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx+i);
    888            _IdxWritePtr += 3;
    889        }
    890        _VtxCurrentIdx += (ImDrawIdx)vtx_count;
    891    }
    892}
    893
    894void ImDrawList::PathArcToFast(const ImVec2& center, float radius, int a_min_of_12, int a_max_of_12)
    895{
    896    if (radius == 0.0f || a_min_of_12 > a_max_of_12)
    897    {
    898        _Path.push_back(center);
    899        return;
    900    }
    901
    902    // For legacy reason the PathArcToFast() always takes angles where 2*PI is represented by 12,
    903    // but it is possible to set IM_DRAWLIST_ARCFAST_TESSELATION_MULTIPLIER to a higher value. This should compile to a no-op otherwise.
    904#if IM_DRAWLIST_ARCFAST_TESSELLATION_MULTIPLIER != 1
    905    a_min_of_12 *= IM_DRAWLIST_ARCFAST_TESSELLATION_MULTIPLIER;
    906    a_max_of_12 *= IM_DRAWLIST_ARCFAST_TESSELLATION_MULTIPLIER;
    907#endif
    908
    909    _Path.reserve(_Path.Size + (a_max_of_12 - a_min_of_12 + 1));
    910    for (int a = a_min_of_12; a <= a_max_of_12; a++)
    911    {
    912        const ImVec2& c = _Data->ArcFastVtx[a % IM_ARRAYSIZE(_Data->ArcFastVtx)];
    913        _Path.push_back(ImVec2(center.x + c.x * radius, center.y + c.y * radius));
    914    }
    915}
    916
    917void ImDrawList::PathArcTo(const ImVec2& center, float radius, float a_min, float a_max, int num_segments)
    918{
    919    if (radius == 0.0f)
    920    {
    921        _Path.push_back(center);
    922        return;
    923    }
    924
    925    // Note that we are adding a point at both a_min and a_max.
    926    // If you are trying to draw a full closed circle you don't want the overlapping points!
    927    _Path.reserve(_Path.Size + (num_segments + 1));
    928    for (int i = 0; i <= num_segments; i++)
    929    {
    930        const float a = a_min + ((float)i / (float)num_segments) * (a_max - a_min);
    931        _Path.push_back(ImVec2(center.x + ImCos(a) * radius, center.y + ImSin(a) * radius));
    932    }
    933}
    934
    935ImVec2 ImBezierCalc(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, float t)
    936{
    937    float u = 1.0f - t;
    938    float w1 = u*u*u;
    939    float w2 = 3*u*u*t;
    940    float w3 = 3*u*t*t;
    941    float w4 = t*t*t;
    942    return ImVec2(w1*p1.x + w2*p2.x + w3*p3.x + w4*p4.x, w1*p1.y + w2*p2.y + w3*p3.y + w4*p4.y);
    943}
    944
    945// Closely mimics BezierClosestPointCasteljauStep() in imgui.cpp
    946static void PathBezierToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float tess_tol, int level)
    947{
    948    float dx = x4 - x1;
    949    float dy = y4 - y1;
    950    float d2 = ((x2 - x4) * dy - (y2 - y4) * dx);
    951    float d3 = ((x3 - x4) * dy - (y3 - y4) * dx);
    952    d2 = (d2 >= 0) ? d2 : -d2;
    953    d3 = (d3 >= 0) ? d3 : -d3;
    954    if ((d2+d3) * (d2+d3) < tess_tol * (dx*dx + dy*dy))
    955    {
    956        path->push_back(ImVec2(x4, y4));
    957    }
    958    else if (level < 10)
    959    {
    960        float x12 = (x1+x2)*0.5f,       y12 = (y1+y2)*0.5f;
    961        float x23 = (x2+x3)*0.5f,       y23 = (y2+y3)*0.5f;
    962        float x34 = (x3+x4)*0.5f,       y34 = (y3+y4)*0.5f;
    963        float x123 = (x12+x23)*0.5f,    y123 = (y12+y23)*0.5f;
    964        float x234 = (x23+x34)*0.5f,    y234 = (y23+y34)*0.5f;
    965        float x1234 = (x123+x234)*0.5f, y1234 = (y123+y234)*0.5f;
    966        PathBezierToCasteljau(path, x1,y1,        x12,y12,    x123,y123,  x1234,y1234, tess_tol, level+1);
    967        PathBezierToCasteljau(path, x1234,y1234,  x234,y234,  x34,y34,    x4,y4,       tess_tol, level+1);
    968    }
    969}
    970
    971void ImDrawList::PathBezierCurveTo(const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, int num_segments)
    972{
    973    ImVec2 p1 = _Path.back();
    974    if (num_segments == 0)
    975    {
    976        PathBezierToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, _Data->CurveTessellationTol, 0); // Auto-tessellated
    977    }
    978    else
    979    {
    980        float t_step = 1.0f / (float)num_segments;
    981        for (int i_step = 1; i_step <= num_segments; i_step++)
    982            _Path.push_back(ImBezierCalc(p1, p2, p3, p4, t_step * i_step));
    983    }
    984}
    985
    986void ImDrawList::PathRect(const ImVec2& a, const ImVec2& b, float rounding, ImDrawCornerFlags rounding_corners)
    987{
    988    rounding = ImMin(rounding, ImFabs(b.x - a.x) * ( ((rounding_corners & ImDrawCornerFlags_Top)  == ImDrawCornerFlags_Top)  || ((rounding_corners & ImDrawCornerFlags_Bot)   == ImDrawCornerFlags_Bot)   ? 0.5f : 1.0f ) - 1.0f);
    989    rounding = ImMin(rounding, ImFabs(b.y - a.y) * ( ((rounding_corners & ImDrawCornerFlags_Left) == ImDrawCornerFlags_Left) || ((rounding_corners & ImDrawCornerFlags_Right) == ImDrawCornerFlags_Right) ? 0.5f : 1.0f ) - 1.0f);
    990
    991    if (rounding <= 0.0f || rounding_corners == 0)
    992    {
    993        PathLineTo(a);
    994        PathLineTo(ImVec2(b.x, a.y));
    995        PathLineTo(b);
    996        PathLineTo(ImVec2(a.x, b.y));
    997    }
    998    else
    999    {
   1000        const float rounding_tl = (rounding_corners & ImDrawCornerFlags_TopLeft) ? rounding : 0.0f;
   1001        const float rounding_tr = (rounding_corners & ImDrawCornerFlags_TopRight) ? rounding : 0.0f;
   1002        const float rounding_br = (rounding_corners & ImDrawCornerFlags_BotRight) ? rounding : 0.0f;
   1003        const float rounding_bl = (rounding_corners & ImDrawCornerFlags_BotLeft) ? rounding : 0.0f;
   1004        PathArcToFast(ImVec2(a.x + rounding_tl, a.y + rounding_tl), rounding_tl, 6, 9);
   1005        PathArcToFast(ImVec2(b.x - rounding_tr, a.y + rounding_tr), rounding_tr, 9, 12);
   1006        PathArcToFast(ImVec2(b.x - rounding_br, b.y - rounding_br), rounding_br, 0, 3);
   1007        PathArcToFast(ImVec2(a.x + rounding_bl, b.y - rounding_bl), rounding_bl, 3, 6);
   1008    }
   1009}
   1010
   1011void ImDrawList::AddLine(const ImVec2& p1, const ImVec2& p2, ImU32 col, float thickness)
   1012{
   1013    if ((col & IM_COL32_A_MASK) == 0)
   1014        return;
   1015    PathLineTo(p1 + ImVec2(0.5f, 0.5f));
   1016    PathLineTo(p2 + ImVec2(0.5f, 0.5f));
   1017    PathStroke(col, false, thickness);
   1018}
   1019
   1020// p_min = upper-left, p_max = lower-right
   1021// Note we don't render 1 pixels sized rectangles properly.
   1022void ImDrawList::AddRect(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, float rounding, ImDrawCornerFlags rounding_corners, float thickness)
   1023{
   1024    if ((col & IM_COL32_A_MASK) == 0)
   1025        return;
   1026    if (Flags & ImDrawListFlags_AntiAliasedLines)
   1027        PathRect(p_min + ImVec2(0.50f,0.50f), p_max - ImVec2(0.50f,0.50f), rounding, rounding_corners);
   1028    else
   1029        PathRect(p_min + ImVec2(0.50f,0.50f), p_max - ImVec2(0.49f,0.49f), rounding, rounding_corners); // Better looking lower-right corner and rounded non-AA shapes.
   1030    PathStroke(col, true, thickness);
   1031}
   1032
   1033void ImDrawList::AddRectFilled(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, float rounding, ImDrawCornerFlags rounding_corners)
   1034{
   1035    if ((col & IM_COL32_A_MASK) == 0)
   1036        return;
   1037    if (rounding > 0.0f)
   1038    {
   1039        PathRect(p_min, p_max, rounding, rounding_corners);
   1040        PathFillConvex(col);
   1041    }
   1042    else
   1043    {
   1044        PrimReserve(6, 4);
   1045        PrimRect(p_min, p_max, col);
   1046    }
   1047}
   1048
   1049// p_min = upper-left, p_max = lower-right
   1050void ImDrawList::AddRectFilledMultiColor(const ImVec2& p_min, const ImVec2& p_max, ImU32 col_upr_left, ImU32 col_upr_right, ImU32 col_bot_right, ImU32 col_bot_left)
   1051{
   1052    if (((col_upr_left | col_upr_right | col_bot_right | col_bot_left) & IM_COL32_A_MASK) == 0)
   1053        return;
   1054
   1055    const ImVec2 uv = _Data->TexUvWhitePixel;
   1056    PrimReserve(6, 4);
   1057    PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx+1)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx+2));
   1058    PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx+2)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx+3));
   1059    PrimWriteVtx(p_min, uv, col_upr_left);
   1060    PrimWriteVtx(ImVec2(p_max.x, p_min.y), uv, col_upr_right);
   1061    PrimWriteVtx(p_max, uv, col_bot_right);
   1062    PrimWriteVtx(ImVec2(p_min.x, p_max.y), uv, col_bot_left);
   1063}
   1064
   1065void ImDrawList::AddQuad(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col, float thickness)
   1066{
   1067    if ((col & IM_COL32_A_MASK) == 0)
   1068        return;
   1069
   1070    PathLineTo(p1);
   1071    PathLineTo(p2);
   1072    PathLineTo(p3);
   1073    PathLineTo(p4);
   1074    PathStroke(col, true, thickness);
   1075}
   1076
   1077void ImDrawList::AddQuadFilled(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col)
   1078{
   1079    if ((col & IM_COL32_A_MASK) == 0)
   1080        return;
   1081
   1082    PathLineTo(p1);
   1083    PathLineTo(p2);
   1084    PathLineTo(p3);
   1085    PathLineTo(p4);
   1086    PathFillConvex(col);
   1087}
   1088
   1089void ImDrawList::AddTriangle(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col, float thickness)
   1090{
   1091    if ((col & IM_COL32_A_MASK) == 0)
   1092        return;
   1093
   1094    PathLineTo(p1);
   1095    PathLineTo(p2);
   1096    PathLineTo(p3);
   1097    PathStroke(col, true, thickness);
   1098}
   1099
   1100void ImDrawList::AddTriangleFilled(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col)
   1101{
   1102    if ((col & IM_COL32_A_MASK) == 0)
   1103        return;
   1104
   1105    PathLineTo(p1);
   1106    PathLineTo(p2);
   1107    PathLineTo(p3);
   1108    PathFillConvex(col);
   1109}
   1110
   1111void ImDrawList::AddCircle(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness)
   1112{
   1113    if ((col & IM_COL32_A_MASK) == 0 || radius <= 0.0f)
   1114        return;
   1115
   1116    // Obtain segment count
   1117    if (num_segments <= 0)
   1118    {
   1119        // Automatic segment count
   1120        const int radius_idx = (int)radius - 1;
   1121        if (radius_idx < IM_ARRAYSIZE(_Data->CircleSegmentCounts))
   1122            num_segments = _Data->CircleSegmentCounts[radius_idx]; // Use cached value
   1123        else
   1124            num_segments = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, _Data->CircleSegmentMaxError);
   1125    }
   1126    else
   1127    {
   1128        // Explicit segment count (still clamp to avoid drawing insanely tessellated shapes)
   1129        num_segments = ImClamp(num_segments, 3, IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MAX);
   1130    }
   1131
   1132    // Because we are filling a closed shape we remove 1 from the count of segments/points
   1133    const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
   1134    if (num_segments == 12)
   1135        PathArcToFast(center, radius - 0.5f, 0, 12);
   1136    else
   1137        PathArcTo(center, radius - 0.5f, 0.0f, a_max, num_segments - 1);
   1138    PathStroke(col, true, thickness);
   1139}
   1140
   1141void ImDrawList::AddCircleFilled(const ImVec2& center, float radius, ImU32 col, int num_segments)
   1142{
   1143    if ((col & IM_COL32_A_MASK) == 0 || radius <= 0.0f)
   1144        return;
   1145
   1146    // Obtain segment count
   1147    if (num_segments <= 0)
   1148    {
   1149        // Automatic segment count
   1150        const int radius_idx = (int)radius - 1;
   1151        if (radius_idx < IM_ARRAYSIZE(_Data->CircleSegmentCounts))
   1152            num_segments = _Data->CircleSegmentCounts[radius_idx]; // Use cached value
   1153        else
   1154            num_segments = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, _Data->CircleSegmentMaxError);
   1155    }
   1156    else
   1157    {
   1158        // Explicit segment count (still clamp to avoid drawing insanely tessellated shapes)
   1159        num_segments = ImClamp(num_segments, 3, IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MAX);
   1160    }
   1161
   1162    // Because we are filling a closed shape we remove 1 from the count of segments/points
   1163    const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
   1164    if (num_segments == 12)
   1165        PathArcToFast(center, radius, 0, 12);
   1166    else
   1167        PathArcTo(center, radius, 0.0f, a_max, num_segments - 1);
   1168    PathFillConvex(col);
   1169}
   1170
   1171// Guaranteed to honor 'num_segments'
   1172void ImDrawList::AddNgon(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness)
   1173{
   1174    if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2)
   1175        return;
   1176
   1177    // Because we are filling a closed shape we remove 1 from the count of segments/points
   1178    const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
   1179    PathArcTo(center, radius - 0.5f, 0.0f, a_max, num_segments - 1);
   1180    PathStroke(col, true, thickness);
   1181}
   1182
   1183// Guaranteed to honor 'num_segments'
   1184void ImDrawList::AddNgonFilled(const ImVec2& center, float radius, ImU32 col, int num_segments)
   1185{
   1186    if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2)
   1187        return;
   1188
   1189    // Because we are filling a closed shape we remove 1 from the count of segments/points
   1190    const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;
   1191    PathArcTo(center, radius, 0.0f, a_max, num_segments - 1);
   1192    PathFillConvex(col);
   1193}
   1194
   1195// Cubic Bezier takes 4 controls points
   1196void ImDrawList::AddBezierCurve(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col, float thickness, int num_segments)
   1197{
   1198    if ((col & IM_COL32_A_MASK) == 0)
   1199        return;
   1200
   1201    PathLineTo(p1);
   1202    PathBezierCurveTo(p2, p3, p4, num_segments);
   1203    PathStroke(col, false, thickness);
   1204}
   1205
   1206void ImDrawList::AddText(const ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end, float wrap_width, const ImVec4* cpu_fine_clip_rect)
   1207{
   1208    if ((col & IM_COL32_A_MASK) == 0)
   1209        return;
   1210
   1211    if (text_end == NULL)
   1212        text_end = text_begin + strlen(text_begin);
   1213    if (text_begin == text_end)
   1214        return;
   1215
   1216    // Pull default font/size from the shared ImDrawListSharedData instance
   1217    if (font == NULL)
   1218        font = _Data->Font;
   1219    if (font_size == 0.0f)
   1220        font_size = _Data->FontSize;
   1221
   1222    IM_ASSERT(font->ContainerAtlas->TexID == _TextureIdStack.back());  // Use high-level ImGui::PushFont() or low-level ImDrawList::PushTextureId() to change font.
   1223
   1224    ImVec4 clip_rect = _ClipRectStack.back();
   1225    if (cpu_fine_clip_rect)
   1226    {
   1227        clip_rect.x = ImMax(clip_rect.x, cpu_fine_clip_rect->x);
   1228        clip_rect.y = ImMax(clip_rect.y, cpu_fine_clip_rect->y);
   1229        clip_rect.z = ImMin(clip_rect.z, cpu_fine_clip_rect->z);
   1230        clip_rect.w = ImMin(clip_rect.w, cpu_fine_clip_rect->w);
   1231    }
   1232    font->RenderText(this, font_size, pos, col, clip_rect, text_begin, text_end, wrap_width, cpu_fine_clip_rect != NULL);
   1233}
   1234
   1235void ImDrawList::AddText(const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end)
   1236{
   1237    AddText(NULL, 0.0f, pos, col, text_begin, text_end);
   1238}
   1239
   1240void ImDrawList::AddImage(ImTextureID user_texture_id, const ImVec2& p_min, const ImVec2& p_max, const ImVec2& uv_min, const ImVec2& uv_max, ImU32 col)
   1241{
   1242    if ((col & IM_COL32_A_MASK) == 0)
   1243        return;
   1244
   1245    const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
   1246    if (push_texture_id)
   1247        PushTextureID(user_texture_id);
   1248
   1249    PrimReserve(6, 4);
   1250    PrimRectUV(p_min, p_max, uv_min, uv_max, col);
   1251
   1252    if (push_texture_id)
   1253        PopTextureID();
   1254}
   1255
   1256void ImDrawList::AddImageQuad(ImTextureID user_texture_id, const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& uv1, const ImVec2& uv2, const ImVec2& uv3, const ImVec2& uv4, ImU32 col)
   1257{
   1258    if ((col & IM_COL32_A_MASK) == 0)
   1259        return;
   1260
   1261    const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
   1262    if (push_texture_id)
   1263        PushTextureID(user_texture_id);
   1264
   1265    PrimReserve(6, 4);
   1266    PrimQuadUV(p1, p2, p3, p4, uv1, uv2, uv3, uv4, col);
   1267
   1268    if (push_texture_id)
   1269        PopTextureID();
   1270}
   1271
   1272void ImDrawList::AddImageRounded(ImTextureID user_texture_id, const ImVec2& p_min, const ImVec2& p_max, const ImVec2& uv_min, const ImVec2& uv_max, ImU32 col, float rounding, ImDrawCornerFlags rounding_corners)
   1273{
   1274    if ((col & IM_COL32_A_MASK) == 0)
   1275        return;
   1276
   1277    if (rounding <= 0.0f || (rounding_corners & ImDrawCornerFlags_All) == 0)
   1278    {
   1279        AddImage(user_texture_id, p_min, p_max, uv_min, uv_max, col);
   1280        return;
   1281    }
   1282
   1283    const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
   1284    if (push_texture_id)
   1285        PushTextureID(user_texture_id);
   1286
   1287    int vert_start_idx = VtxBuffer.Size;
   1288    PathRect(p_min, p_max, rounding, rounding_corners);
   1289    PathFillConvex(col);
   1290    int vert_end_idx = VtxBuffer.Size;
   1291    ImGui::ShadeVertsLinearUV(this, vert_start_idx, vert_end_idx, p_min, p_max, uv_min, uv_max, true);
   1292
   1293    if (push_texture_id)
   1294        PopTextureID();
   1295}
   1296
   1297
   1298//-----------------------------------------------------------------------------
   1299// ImDrawListSplitter
   1300//-----------------------------------------------------------------------------
   1301// FIXME: This may be a little confusing, trying to be a little too low-level/optimal instead of just doing vector swap..
   1302//-----------------------------------------------------------------------------
   1303
   1304void ImDrawListSplitter::ClearFreeMemory()
   1305{
   1306    for (int i = 0; i < _Channels.Size; i++)
   1307    {
   1308        if (i == _Current)
   1309            memset(&_Channels[i], 0, sizeof(_Channels[i]));  // Current channel is a copy of CmdBuffer/IdxBuffer, don't destruct again
   1310        _Channels[i]._CmdBuffer.clear();
   1311        _Channels[i]._IdxBuffer.clear();
   1312    }
   1313    _Current = 0;
   1314    _Count = 1;
   1315    _Channels.clear();
   1316}
   1317
   1318void ImDrawListSplitter::Split(ImDrawList* draw_list, int channels_count)
   1319{
   1320    IM_ASSERT(_Current == 0 && _Count <= 1 && "Nested channel splitting is not supported. Please use separate instances of ImDrawListSplitter.");
   1321    int old_channels_count = _Channels.Size;
   1322    if (old_channels_count < channels_count)
   1323        _Channels.resize(channels_count);
   1324    _Count = channels_count;
   1325
   1326    // Channels[] (24/32 bytes each) hold storage that we'll swap with draw_list->_CmdBuffer/_IdxBuffer
   1327    // The content of Channels[0] at this point doesn't matter. We clear it to make state tidy in a debugger but we don't strictly need to.
   1328    // When we switch to the next channel, we'll copy draw_list->_CmdBuffer/_IdxBuffer into Channels[0] and then Channels[1] into draw_list->CmdBuffer/_IdxBuffer
   1329    memset(&_Channels[0], 0, sizeof(ImDrawChannel));
   1330    for (int i = 1; i < channels_count; i++)
   1331    {
   1332        if (i >= old_channels_count)
   1333        {
   1334            IM_PLACEMENT_NEW(&_Channels[i]) ImDrawChannel();
   1335        }
   1336        else
   1337        {
   1338            _Channels[i]._CmdBuffer.resize(0);
   1339            _Channels[i]._IdxBuffer.resize(0);
   1340        }
   1341        if (_Channels[i]._CmdBuffer.Size == 0)
   1342        {
   1343            ImDrawCmd draw_cmd;
   1344            draw_cmd.ClipRect = draw_list->_ClipRectStack.back();
   1345            draw_cmd.TextureId = draw_list->_TextureIdStack.back();
   1346            _Channels[i]._CmdBuffer.push_back(draw_cmd);
   1347        }
   1348    }
   1349}
   1350
   1351static inline bool CanMergeDrawCommands(ImDrawCmd* a, ImDrawCmd* b)
   1352{
   1353    return memcmp(&a->ClipRect, &b->ClipRect, sizeof(a->ClipRect)) == 0 && a->TextureId == b->TextureId && a->VtxOffset == b->VtxOffset && !a->UserCallback && !b->UserCallback;
   1354}
   1355
   1356void ImDrawListSplitter::Merge(ImDrawList* draw_list)
   1357{
   1358    // Note that we never use or rely on channels.Size because it is merely a buffer that we never shrink back to 0 to keep all sub-buffers ready for use.
   1359    if (_Count <= 1)
   1360        return;
   1361
   1362    SetCurrentChannel(draw_list, 0);
   1363    if (draw_list->CmdBuffer.Size != 0 && draw_list->CmdBuffer.back().ElemCount == 0)
   1364        draw_list->CmdBuffer.pop_back();
   1365
   1366    // Calculate our final buffer sizes. Also fix the incorrect IdxOffset values in each command.
   1367    int new_cmd_buffer_count = 0;
   1368    int new_idx_buffer_count = 0;
   1369    ImDrawCmd* last_cmd = (_Count > 0 && draw_list->CmdBuffer.Size > 0) ? &draw_list->CmdBuffer.back() : NULL;
   1370    int idx_offset = last_cmd ? last_cmd->IdxOffset + last_cmd->ElemCount : 0;
   1371    for (int i = 1; i < _Count; i++)
   1372    {
   1373        ImDrawChannel& ch = _Channels[i];
   1374        if (ch._CmdBuffer.Size > 0 && ch._CmdBuffer.back().ElemCount == 0)
   1375            ch._CmdBuffer.pop_back();
   1376        if (ch._CmdBuffer.Size > 0 && last_cmd != NULL && CanMergeDrawCommands(last_cmd, &ch._CmdBuffer[0]))
   1377        {
   1378            // Merge previous channel last draw command with current channel first draw command if matching.
   1379            last_cmd->ElemCount += ch._CmdBuffer[0].ElemCount;
   1380            idx_offset += ch._CmdBuffer[0].ElemCount;
   1381            ch._CmdBuffer.erase(ch._CmdBuffer.Data); // FIXME-OPT: Improve for multiple merges.
   1382        }
   1383        if (ch._CmdBuffer.Size > 0)
   1384            last_cmd = &ch._CmdBuffer.back();
   1385        new_cmd_buffer_count += ch._CmdBuffer.Size;
   1386        new_idx_buffer_count += ch._IdxBuffer.Size;
   1387        for (int cmd_n = 0; cmd_n < ch._CmdBuffer.Size; cmd_n++)
   1388        {
   1389            ch._CmdBuffer.Data[cmd_n].IdxOffset = idx_offset;
   1390            idx_offset += ch._CmdBuffer.Data[cmd_n].ElemCount;
   1391        }
   1392    }
   1393    draw_list->CmdBuffer.resize(draw_list->CmdBuffer.Size + new_cmd_buffer_count);
   1394    draw_list->IdxBuffer.resize(draw_list->IdxBuffer.Size + new_idx_buffer_count);
   1395
   1396    // Write commands and indices in order (they are fairly small structures, we don't copy vertices only indices)
   1397    ImDrawCmd* cmd_write = draw_list->CmdBuffer.Data + draw_list->CmdBuffer.Size - new_cmd_buffer_count;
   1398    ImDrawIdx* idx_write = draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size - new_idx_buffer_count;
   1399    for (int i = 1; i < _Count; i++)
   1400    {
   1401        ImDrawChannel& ch = _Channels[i];
   1402        if (int sz = ch._CmdBuffer.Size) { memcpy(cmd_write, ch._CmdBuffer.Data, sz * sizeof(ImDrawCmd)); cmd_write += sz; }
   1403        if (int sz = ch._IdxBuffer.Size) { memcpy(idx_write, ch._IdxBuffer.Data, sz * sizeof(ImDrawIdx)); idx_write += sz; }
   1404    }
   1405    draw_list->_IdxWritePtr = idx_write;
   1406    draw_list->UpdateClipRect(); // We call this instead of AddDrawCmd(), so that empty channels won't produce an extra draw call.
   1407    draw_list->UpdateTextureID();
   1408    _Count = 1;
   1409}
   1410
   1411void ImDrawListSplitter::SetCurrentChannel(ImDrawList* draw_list, int idx)
   1412{
   1413    IM_ASSERT(idx >= 0 && idx < _Count);
   1414    if (_Current == idx)
   1415        return;
   1416    // Overwrite ImVector (12/16 bytes), four times. This is merely a silly optimization instead of doing .swap()
   1417    memcpy(&_Channels.Data[_Current]._CmdBuffer, &draw_list->CmdBuffer, sizeof(draw_list->CmdBuffer));
   1418    memcpy(&_Channels.Data[_Current]._IdxBuffer, &draw_list->IdxBuffer, sizeof(draw_list->IdxBuffer));
   1419    _Current = idx;
   1420    memcpy(&draw_list->CmdBuffer, &_Channels.Data[idx]._CmdBuffer, sizeof(draw_list->CmdBuffer));
   1421    memcpy(&draw_list->IdxBuffer, &_Channels.Data[idx]._IdxBuffer, sizeof(draw_list->IdxBuffer));
   1422    draw_list->_IdxWritePtr = draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size;
   1423}
   1424
   1425//-----------------------------------------------------------------------------
   1426// [SECTION] ImDrawData
   1427//-----------------------------------------------------------------------------
   1428
   1429// For backward compatibility: convert all buffers from indexed to de-indexed, in case you cannot render indexed. Note: this is slow and most likely a waste of resources. Always prefer indexed rendering!
   1430void ImDrawData::DeIndexAllBuffers()
   1431{
   1432    ImVector<ImDrawVert> new_vtx_buffer;
   1433    TotalVtxCount = TotalIdxCount = 0;
   1434    for (int i = 0; i < CmdListsCount; i++)
   1435    {
   1436        ImDrawList* cmd_list = CmdLists[i];
   1437        if (cmd_list->IdxBuffer.empty())
   1438            continue;
   1439        new_vtx_buffer.resize(cmd_list->IdxBuffer.Size);
   1440        for (int j = 0; j < cmd_list->IdxBuffer.Size; j++)
   1441            new_vtx_buffer[j] = cmd_list->VtxBuffer[cmd_list->IdxBuffer[j]];
   1442        cmd_list->VtxBuffer.swap(new_vtx_buffer);
   1443        cmd_list->IdxBuffer.resize(0);
   1444        TotalVtxCount += cmd_list->VtxBuffer.Size;
   1445    }
   1446}
   1447
   1448// Helper to scale the ClipRect field of each ImDrawCmd.
   1449// Use if your final output buffer is at a different scale than draw_data->DisplaySize,
   1450// or if there is a difference between your window resolution and framebuffer resolution.
   1451void ImDrawData::ScaleClipRects(const ImVec2& fb_scale)
   1452{
   1453    for (int i = 0; i < CmdListsCount; i++)
   1454    {
   1455        ImDrawList* cmd_list = CmdLists[i];
   1456        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
   1457        {
   1458            ImDrawCmd* cmd = &cmd_list->CmdBuffer[cmd_i];
   1459            cmd->ClipRect = ImVec4(cmd->ClipRect.x * fb_scale.x, cmd->ClipRect.y * fb_scale.y, cmd->ClipRect.z * fb_scale.x, cmd->ClipRect.w * fb_scale.y);
   1460        }
   1461    }
   1462}
   1463
   1464//-----------------------------------------------------------------------------
   1465// [SECTION] Helpers ShadeVertsXXX functions
   1466//-----------------------------------------------------------------------------
   1467
   1468// Generic linear color gradient, write to RGB fields, leave A untouched.
   1469void ImGui::ShadeVertsLinearColorGradientKeepAlpha(ImDrawList* draw_list, int vert_start_idx, int vert_end_idx, ImVec2 gradient_p0, ImVec2 gradient_p1, ImU32 col0, ImU32 col1)
   1470{
   1471    ImVec2 gradient_extent = gradient_p1 - gradient_p0;
   1472    float gradient_inv_length2 = 1.0f / ImLengthSqr(gradient_extent);
   1473    ImDrawVert* vert_start = draw_list->VtxBuffer.Data + vert_start_idx;
   1474    ImDrawVert* vert_end = draw_list->VtxBuffer.Data + vert_end_idx;
   1475    for (ImDrawVert* vert = vert_start; vert < vert_end; vert++)
   1476    {
   1477        float d = ImDot(vert->pos - gradient_p0, gradient_extent);
   1478        float t = ImClamp(d * gradient_inv_length2, 0.0f, 1.0f);
   1479        int r = ImLerp((int)(col0 >> IM_COL32_R_SHIFT) & 0xFF, (int)(col1 >> IM_COL32_R_SHIFT) & 0xFF, t);
   1480        int g = ImLerp((int)(col0 >> IM_COL32_G_SHIFT) & 0xFF, (int)(col1 >> IM_COL32_G_SHIFT) & 0xFF, t);
   1481        int b = ImLerp((int)(col0 >> IM_COL32_B_SHIFT) & 0xFF, (int)(col1 >> IM_COL32_B_SHIFT) & 0xFF, t);
   1482        vert->col = (r << IM_COL32_R_SHIFT) | (g << IM_COL32_G_SHIFT) | (b << IM_COL32_B_SHIFT) | (vert->col & IM_COL32_A_MASK);
   1483    }
   1484}
   1485
   1486// Distribute UV over (a, b) rectangle
   1487void ImGui::ShadeVertsLinearUV(ImDrawList* draw_list, int vert_start_idx, int vert_end_idx, const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, bool clamp)
   1488{
   1489    const ImVec2 size = b - a;
   1490    const ImVec2 uv_size = uv_b - uv_a;
   1491    const ImVec2 scale = ImVec2(
   1492        size.x != 0.0f ? (uv_size.x / size.x) : 0.0f,
   1493        size.y != 0.0f ? (uv_size.y / size.y) : 0.0f);
   1494
   1495    ImDrawVert* vert_start = draw_list->VtxBuffer.Data + vert_start_idx;
   1496    ImDrawVert* vert_end = draw_list->VtxBuffer.Data + vert_end_idx;
   1497    if (clamp)
   1498    {
   1499        const ImVec2 min = ImMin(uv_a, uv_b);
   1500        const ImVec2 max = ImMax(uv_a, uv_b);
   1501        for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)
   1502            vertex->uv = ImClamp(uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale), min, max);
   1503    }
   1504    else
   1505    {
   1506        for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)
   1507            vertex->uv = uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale);
   1508    }
   1509}
   1510
   1511//-----------------------------------------------------------------------------
   1512// [SECTION] ImFontConfig
   1513//-----------------------------------------------------------------------------
   1514
   1515ImFontConfig::ImFontConfig()
   1516{
   1517    FontData = NULL;
   1518    FontDataSize = 0;
   1519    FontDataOwnedByAtlas = true;
   1520    FontNo = 0;
   1521    SizePixels = 0.0f;
   1522    OversampleH = 3; // FIXME: 2 may be a better default?
   1523    OversampleV = 1;
   1524    PixelSnapH = false;
   1525    GlyphExtraSpacing = ImVec2(0.0f, 0.0f);
   1526    GlyphOffset = ImVec2(0.0f, 0.0f);
   1527    GlyphRanges = NULL;
   1528    GlyphMinAdvanceX = 0.0f;
   1529    GlyphMaxAdvanceX = FLT_MAX;
   1530    MergeMode = false;
   1531    RasterizerFlags = 0x00;
   1532    RasterizerMultiply = 1.0f;
   1533    EllipsisChar = (ImWchar)-1;
   1534    memset(Name, 0, sizeof(Name));
   1535    DstFont = NULL;
   1536}
   1537
   1538//-----------------------------------------------------------------------------
   1539// [SECTION] ImFontAtlas
   1540//-----------------------------------------------------------------------------
   1541
   1542// A work of art lies ahead! (. = white layer, X = black layer, others are blank)
   1543// The white texels on the top left are the ones we'll use everywhere in Dear ImGui to render filled shapes.
   1544const int FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF = 108;
   1545const int FONT_ATLAS_DEFAULT_TEX_DATA_H      = 27;
   1546const unsigned int FONT_ATLAS_DEFAULT_TEX_DATA_ID = 0x80000000;
   1547static const char FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF * FONT_ATLAS_DEFAULT_TEX_DATA_H + 1] =
   1548{
   1549    "..-         -XXXXXXX-    X    -           X           -XXXXXXX          -          XXXXXXX-     XX          "
   1550    "..-         -X.....X-   X.X   -          X.X          -X.....X          -          X.....X-    X..X         "
   1551    "---         -XXX.XXX-  X...X  -         X...X         -X....X           -           X....X-    X..X         "
   1552    "X           -  X.X  - X.....X -        X.....X        -X...X            -            X...X-    X..X         "
   1553    "XX          -  X.X  -X.......X-       X.......X       -X..X.X           -           X.X..X-    X..X         "
   1554    "X.X         -  X.X  -XXXX.XXXX-       XXXX.XXXX       -X.X X.X          -          X.X X.X-    X..XXX       "
   1555    "X..X        -  X.X  -   X.X   -          X.X          -XX   X.X         -         X.X   XX-    X..X..XXX    "
   1556    "X...X       -  X.X  -   X.X   -    XX    X.X    XX    -      X.X        -        X.X      -    X..X..X..XX  "
   1557    "X....X      -  X.X  -   X.X   -   X.X    X.X    X.X   -       X.X       -       X.X       -    X..X..X..X.X "
   1558    "X.....X     -  X.X  -   X.X   -  X..X    X.X    X..X  -        X.X      -      X.X        -XXX X..X..X..X..X"
   1559    "X......X    -  X.X  -   X.X   - X...XXXXXX.XXXXXX...X -         X.X   XX-XX   X.X         -X..XX........X..X"
   1560    "X.......X   -  X.X  -   X.X   -X.....................X-          X.X X.X-X.X X.X          -X...X...........X"
   1561    "X........X  -  X.X  -   X.X   - X...XXXXXX.XXXXXX...X -           X.X..X-X..X.X           - X..............X"
   1562    "X.........X -XXX.XXX-   X.X   -  X..X    X.X    X..X  -            X...X-X...X            -  X.............X"
   1563    "X..........X-X.....X-   X.X   -   X.X    X.X    X.X   -           X....X-X....X           -  X.............X"
   1564    "X......XXXXX-XXXXXXX-   X.X   -    XX    X.X    XX    -          X.....X-X.....X          -   X............X"
   1565    "X...X..X    ---------   X.X   -          X.X          -          XXXXXXX-XXXXXXX          -   X...........X "
   1566    "X..X X..X   -       -XXXX.XXXX-       XXXX.XXXX       -------------------------------------    X..........X "
   1567    "X.X  X..X   -       -X.......X-       X.......X       -    XX           XX    -           -    X..........X "
   1568    "XX    X..X  -       - X.....X -        X.....X        -   X.X           X.X   -           -     X........X  "
   1569    "      X..X          -  X...X  -         X...X         -  X..X           X..X  -           -     X........X  "
   1570    "       XX           -   X.X   -          X.X          - X...XXXXXXXXXXXXX...X -           -     XXXXXXXXXX  "
   1571    "------------        -    X    -           X           -X.....................X-           ------------------"
   1572    "                    ----------------------------------- X...XXXXXXXXXXXXX...X -                             "
   1573    "                                                      -  X..X           X..X  -                             "
   1574    "                                                      -   X.X           X.X   -                             "
   1575    "                                                      -    XX           XX    -                             "
   1576};
   1577
   1578static const ImVec2 FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[ImGuiMouseCursor_COUNT][3] =
   1579{
   1580    // Pos ........ Size ......... Offset ......
   1581    { ImVec2( 0,3), ImVec2(12,19), ImVec2( 0, 0) }, // ImGuiMouseCursor_Arrow
   1582    { ImVec2(13,0), ImVec2( 7,16), ImVec2( 1, 8) }, // ImGuiMouseCursor_TextInput
   1583    { ImVec2(31,0), ImVec2(23,23), ImVec2(11,11) }, // ImGuiMouseCursor_ResizeAll
   1584    { ImVec2(21,0), ImVec2( 9,23), ImVec2( 4,11) }, // ImGuiMouseCursor_ResizeNS
   1585    { ImVec2(55,18),ImVec2(23, 9), ImVec2(11, 4) }, // ImGuiMouseCursor_ResizeEW
   1586    { ImVec2(73,0), ImVec2(17,17), ImVec2( 8, 8) }, // ImGuiMouseCursor_ResizeNESW
   1587    { ImVec2(55,0), ImVec2(17,17), ImVec2( 8, 8) }, // ImGuiMouseCursor_ResizeNWSE
   1588    { ImVec2(91,0), ImVec2(17,22), ImVec2( 5, 0) }, // ImGuiMouseCursor_Hand
   1589};
   1590
   1591ImFontAtlas::ImFontAtlas()
   1592{
   1593    Locked = false;
   1594    Flags = ImFontAtlasFlags_None;
   1595    TexID = (ImTextureID)NULL;
   1596    TexDesiredWidth = 0;
   1597    TexGlyphPadding = 1;
   1598
   1599    TexPixelsAlpha8 = NULL;
   1600    TexPixelsRGBA32 = NULL;
   1601    TexWidth = TexHeight = 0;
   1602    TexUvScale = ImVec2(0.0f, 0.0f);
   1603    TexUvWhitePixel = ImVec2(0.0f, 0.0f);
   1604    for (int n = 0; n < IM_ARRAYSIZE(CustomRectIds); n++)
   1605        CustomRectIds[n] = -1;
   1606}
   1607
   1608ImFontAtlas::~ImFontAtlas()
   1609{
   1610    IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
   1611    Clear();
   1612}
   1613
   1614void    ImFontAtlas::ClearInputData()
   1615{
   1616    IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
   1617    for (int i = 0; i < ConfigData.Size; i++)
   1618        if (ConfigData[i].FontData && ConfigData[i].FontDataOwnedByAtlas)
   1619        {
   1620            IM_FREE(ConfigData[i].FontData);
   1621            ConfigData[i].FontData = NULL;
   1622        }
   1623
   1624    // When clearing this we lose access to the font name and other information used to build the font.
   1625    for (int i = 0; i < Fonts.Size; i++)
   1626        if (Fonts[i]->ConfigData >= ConfigData.Data && Fonts[i]->ConfigData < ConfigData.Data + ConfigData.Size)
   1627        {
   1628            Fonts[i]->ConfigData = NULL;
   1629            Fonts[i]->ConfigDataCount = 0;
   1630        }
   1631    ConfigData.clear();
   1632    CustomRects.clear();
   1633    for (int n = 0; n < IM_ARRAYSIZE(CustomRectIds); n++)
   1634        CustomRectIds[n] = -1;
   1635}
   1636
   1637void    ImFontAtlas::ClearTexData()
   1638{
   1639    IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
   1640    if (TexPixelsAlpha8)
   1641        IM_FREE(TexPixelsAlpha8);
   1642    if (TexPixelsRGBA32)
   1643        IM_FREE(TexPixelsRGBA32);
   1644    TexPixelsAlpha8 = NULL;
   1645    TexPixelsRGBA32 = NULL;
   1646}
   1647
   1648void    ImFontAtlas::ClearFonts()
   1649{
   1650    IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
   1651    for (int i = 0; i < Fonts.Size; i++)
   1652        IM_DELETE(Fonts[i]);
   1653    Fonts.clear();
   1654}
   1655
   1656void    ImFontAtlas::Clear()
   1657{
   1658    ClearInputData();
   1659    ClearTexData();
   1660    ClearFonts();
   1661}
   1662
   1663void    ImFontAtlas::GetTexDataAsAlpha8(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel)
   1664{
   1665    // Build atlas on demand
   1666    if (TexPixelsAlpha8 == NULL)
   1667    {
   1668        if (ConfigData.empty())
   1669            AddFontDefault();
   1670        Build();
   1671    }
   1672
   1673    *out_pixels = TexPixelsAlpha8;
   1674    if (out_width) *out_width = TexWidth;
   1675    if (out_height) *out_height = TexHeight;
   1676    if (out_bytes_per_pixel) *out_bytes_per_pixel = 1;
   1677}
   1678
   1679void    ImFontAtlas::GetTexDataAsRGBA32(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel)
   1680{
   1681    // Convert to RGBA32 format on demand
   1682    // Although it is likely to be the most commonly used format, our font rendering is 1 channel / 8 bpp
   1683    if (!TexPixelsRGBA32)
   1684    {
   1685        unsigned char* pixels = NULL;
   1686        GetTexDataAsAlpha8(&pixels, NULL, NULL);
   1687        if (pixels)
   1688        {
   1689            TexPixelsRGBA32 = (unsigned int*)IM_ALLOC((size_t)TexWidth * (size_t)TexHeight * 4);
   1690            const unsigned char* src = pixels;
   1691            unsigned int* dst = TexPixelsRGBA32;
   1692            for (int n = TexWidth * TexHeight; n > 0; n--)
   1693                *dst++ = IM_COL32(255, 255, 255, (unsigned int)(*src++));
   1694        }
   1695    }
   1696
   1697    *out_pixels = (unsigned char*)TexPixelsRGBA32;
   1698    if (out_width) *out_width = TexWidth;
   1699    if (out_height) *out_height = TexHeight;
   1700    if (out_bytes_per_pixel) *out_bytes_per_pixel = 4;
   1701}
   1702
   1703ImFont* ImFontAtlas::AddFont(const ImFontConfig* font_cfg)
   1704{
   1705    IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
   1706    IM_ASSERT(font_cfg->FontData != NULL && font_cfg->FontDataSize > 0);
   1707    IM_ASSERT(font_cfg->SizePixels > 0.0f);
   1708
   1709    // Create new font
   1710    if (!font_cfg->MergeMode)
   1711        Fonts.push_back(IM_NEW(ImFont));
   1712    else
   1713        IM_ASSERT(!Fonts.empty() && "Cannot use MergeMode for the first font"); // When using MergeMode make sure that a font has already been added before. You can use ImGui::GetIO().Fonts->AddFontDefault() to add the default imgui font.
   1714
   1715    ConfigData.push_back(*font_cfg);
   1716    ImFontConfig& new_font_cfg = ConfigData.back();
   1717    if (new_font_cfg.DstFont == NULL)
   1718        new_font_cfg.DstFont = Fonts.back();
   1719    if (!new_font_cfg.FontDataOwnedByAtlas)
   1720    {
   1721        new_font_cfg.FontData = IM_ALLOC(new_font_cfg.FontDataSize);
   1722        new_font_cfg.FontDataOwnedByAtlas = true;
   1723        memcpy(new_font_cfg.FontData, font_cfg->FontData, (size_t)new_font_cfg.FontDataSize);
   1724    }
   1725
   1726    if (new_font_cfg.DstFont->EllipsisChar == (ImWchar)-1)
   1727        new_font_cfg.DstFont->EllipsisChar = font_cfg->EllipsisChar;
   1728
   1729    // Invalidate texture
   1730    ClearTexData();
   1731    return new_font_cfg.DstFont;
   1732}
   1733
   1734// Default font TTF is compressed with stb_compress then base85 encoded (see misc/fonts/binary_to_compressed_c.cpp for encoder)
   1735static unsigned int stb_decompress_length(const unsigned char *input);
   1736static unsigned int stb_decompress(unsigned char *output, const unsigned char *input, unsigned int length);
   1737static const char*  GetDefaultCompressedFontDataTTFBase85();
   1738static unsigned int Decode85Byte(char c)                                    { return c >= '\\' ? c-36 : c-35; }
   1739static void         Decode85(const unsigned char* src, unsigned char* dst)
   1740{
   1741    while (*src)
   1742    {
   1743        unsigned int tmp = Decode85Byte(src[0]) + 85*(Decode85Byte(src[1]) + 85*(Decode85Byte(src[2]) + 85*(Decode85Byte(src[3]) + 85*Decode85Byte(src[4]))));
   1744        dst[0] = ((tmp >> 0) & 0xFF); dst[1] = ((tmp >> 8) & 0xFF); dst[2] = ((tmp >> 16) & 0xFF); dst[3] = ((tmp >> 24) & 0xFF);   // We can't assume little-endianness.
   1745        src += 5;
   1746        dst += 4;
   1747    }
   1748}
   1749
   1750// Load embedded ProggyClean.ttf at size 13, disable oversampling
   1751ImFont* ImFontAtlas::AddFontDefault(const ImFontConfig* font_cfg_template)
   1752{
   1753    ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
   1754    if (!font_cfg_template)
   1755    {
   1756        font_cfg.OversampleH = font_cfg.OversampleV = 1;
   1757        font_cfg.PixelSnapH = true;
   1758    }
   1759    if (font_cfg.SizePixels <= 0.0f)
   1760        font_cfg.SizePixels = 13.0f * 1.0f;
   1761    if (font_cfg.Name[0] == '\0')
   1762        ImFormatString(font_cfg.Name, IM_ARRAYSIZE(font_cfg.Name), "ProggyClean.ttf, %dpx", (int)font_cfg.SizePixels);
   1763    font_cfg.EllipsisChar = (ImWchar)0x0085;
   1764
   1765    const char* ttf_compressed_base85 = GetDefaultCompressedFontDataTTFBase85();
   1766    const ImWchar* glyph_ranges = font_cfg.GlyphRanges != NULL ? font_cfg.GlyphRanges : GetGlyphRangesDefault();
   1767    ImFont* font = AddFontFromMemoryCompressedBase85TTF(ttf_compressed_base85, font_cfg.SizePixels, &font_cfg, glyph_ranges);
   1768    font->DisplayOffset.y = 1.0f;
   1769    return font;
   1770}
   1771
   1772ImFont* ImFontAtlas::AddFontFromFileTTF(const char* filename, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
   1773{
   1774    IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
   1775    size_t data_size = 0;
   1776    void* data = ImFileLoadToMemory(filename, "rb", &data_size, 0);
   1777    if (!data)
   1778    {
   1779        IM_ASSERT_USER_ERROR(0, "Could not load font file!");
   1780        return NULL;
   1781    }
   1782    ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
   1783    if (font_cfg.Name[0] == '\0')
   1784    {
   1785        // Store a short copy of filename into into the font name for convenience
   1786        const char* p;
   1787        for (p = filename + strlen(filename); p > filename && p[-1] != '/' && p[-1] != '\\'; p--) {}
   1788        ImFormatString(font_cfg.Name, IM_ARRAYSIZE(font_cfg.Name), "%s, %.0fpx", p, size_pixels);
   1789    }
   1790    return AddFontFromMemoryTTF(data, (int)data_size, size_pixels, &font_cfg, glyph_ranges);
   1791}
   1792
   1793// NB: Transfer ownership of 'ttf_data' to ImFontAtlas, unless font_cfg_template->FontDataOwnedByAtlas == false. Owned TTF buffer will be deleted after Build().
   1794ImFont* ImFontAtlas::AddFontFromMemoryTTF(void* ttf_data, int ttf_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
   1795{
   1796    IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
   1797    ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
   1798    IM_ASSERT(font_cfg.FontData == NULL);
   1799    font_cfg.FontData = ttf_data;
   1800    font_cfg.FontDataSize = ttf_size;
   1801    font_cfg.SizePixels = size_pixels;
   1802    if (glyph_ranges)
   1803        font_cfg.GlyphRanges = glyph_ranges;
   1804    return AddFont(&font_cfg);
   1805}
   1806
   1807ImFont* ImFontAtlas::AddFontFromMemoryCompressedTTF(const void* compressed_ttf_data, int compressed_ttf_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
   1808{
   1809    const unsigned int buf_decompressed_size = stb_decompress_length((const unsigned char*)compressed_ttf_data);
   1810    unsigned char* buf_decompressed_data = (unsigned char *)IM_ALLOC(buf_decompressed_size);
   1811    stb_decompress(buf_decompressed_data, (const unsigned char*)compressed_ttf_data, (unsigned int)compressed_ttf_size);
   1812
   1813    ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
   1814    IM_ASSERT(font_cfg.FontData == NULL);
   1815    font_cfg.FontDataOwnedByAtlas = true;
   1816    return AddFontFromMemoryTTF(buf_decompressed_data, (int)buf_decompressed_size, size_pixels, &font_cfg, glyph_ranges);
   1817}
   1818
   1819ImFont* ImFontAtlas::AddFontFromMemoryCompressedBase85TTF(const char* compressed_ttf_data_base85, float size_pixels, const ImFontConfig* font_cfg, const ImWchar* glyph_ranges)
   1820{
   1821    int compressed_ttf_size = (((int)strlen(compressed_ttf_data_base85) + 4) / 5) * 4;
   1822    void* compressed_ttf = IM_ALLOC((size_t)compressed_ttf_size);
   1823    Decode85((const unsigned char*)compressed_ttf_data_base85, (unsigned char*)compressed_ttf);
   1824    ImFont* font = AddFontFromMemoryCompressedTTF(compressed_ttf, compressed_ttf_size, size_pixels, font_cfg, glyph_ranges);
   1825    IM_FREE(compressed_ttf);
   1826    return font;
   1827}
   1828
   1829int ImFontAtlas::AddCustomRectRegular(unsigned int id, int width, int height)
   1830{
   1831    // Breaking change on 2019/11/21 (1.74): ImFontAtlas::AddCustomRectRegular() now requires an ID >= 0x110000 (instead of >= 0x10000)
   1832    IM_ASSERT(id >= 0x110000);
   1833    IM_ASSERT(width > 0 && width <= 0xFFFF);
   1834    IM_ASSERT(height > 0 && height <= 0xFFFF);
   1835    ImFontAtlasCustomRect r;
   1836    r.ID = id;
   1837    r.Width = (unsigned short)width;
   1838    r.Height = (unsigned short)height;
   1839    CustomRects.push_back(r);
   1840    return CustomRects.Size - 1; // Return index
   1841}
   1842
   1843int ImFontAtlas::AddCustomRectFontGlyph(ImFont* font, ImWchar id, int width, int height, float advance_x, const ImVec2& offset)
   1844{
   1845    IM_ASSERT(font != NULL);
   1846    IM_ASSERT(width > 0 && width <= 0xFFFF);
   1847    IM_ASSERT(height > 0 && height <= 0xFFFF);
   1848    ImFontAtlasCustomRect r;
   1849    r.ID = id;
   1850    r.Width = (unsigned short)width;
   1851    r.Height = (unsigned short)height;
   1852    r.GlyphAdvanceX = advance_x;
   1853    r.GlyphOffset = offset;
   1854    r.Font = font;
   1855    CustomRects.push_back(r);
   1856    return CustomRects.Size - 1; // Return index
   1857}
   1858
   1859void ImFontAtlas::CalcCustomRectUV(const ImFontAtlasCustomRect* rect, ImVec2* out_uv_min, ImVec2* out_uv_max) const
   1860{
   1861    IM_ASSERT(TexWidth > 0 && TexHeight > 0);   // Font atlas needs to be built before we can calculate UV coordinates
   1862    IM_ASSERT(rect->IsPacked());                // Make sure the rectangle has been packed
   1863    *out_uv_min = ImVec2((float)rect->X * TexUvScale.x, (float)rect->Y * TexUvScale.y);
   1864    *out_uv_max = ImVec2((float)(rect->X + rect->Width) * TexUvScale.x, (float)(rect->Y + rect->Height) * TexUvScale.y);
   1865}
   1866
   1867bool ImFontAtlas::GetMouseCursorTexData(ImGuiMouseCursor cursor_type, ImVec2* out_offset, ImVec2* out_size, ImVec2 out_uv_border[2], ImVec2 out_uv_fill[2])
   1868{
   1869    if (cursor_type <= ImGuiMouseCursor_None || cursor_type >= ImGuiMouseCursor_COUNT)
   1870        return false;
   1871    if (Flags & ImFontAtlasFlags_NoMouseCursors)
   1872        return false;
   1873
   1874    IM_ASSERT(CustomRectIds[0] != -1);
   1875    ImFontAtlasCustomRect& r = CustomRects[CustomRectIds[0]];
   1876    IM_ASSERT(r.ID == FONT_ATLAS_DEFAULT_TEX_DATA_ID);
   1877    ImVec2 pos = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][0] + ImVec2((float)r.X, (float)r.Y);
   1878    ImVec2 size = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][1];
   1879    *out_size = size;
   1880    *out_offset = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][2];
   1881    out_uv_border[0] = (pos) * TexUvScale;
   1882    out_uv_border[1] = (pos + size) * TexUvScale;
   1883    pos.x += FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF + 1;
   1884    out_uv_fill[0] = (pos) * TexUvScale;
   1885    out_uv_fill[1] = (pos + size) * TexUvScale;
   1886    return true;
   1887}
   1888
   1889bool    ImFontAtlas::Build()
   1890{
   1891    IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");
   1892    return ImFontAtlasBuildWithStbTruetype(this);
   1893}
   1894
   1895void    ImFontAtlasBuildMultiplyCalcLookupTable(unsigned char out_table[256], float in_brighten_factor)
   1896{
   1897    for (unsigned int i = 0; i < 256; i++)
   1898    {
   1899        unsigned int value = (unsigned int)(i * in_brighten_factor);
   1900        out_table[i] = value > 255 ? 255 : (value & 0xFF);
   1901    }
   1902}
   1903
   1904void    ImFontAtlasBuildMultiplyRectAlpha8(const unsigned char table[256], unsigned char* pixels, int x, int y, int w, int h, int stride)
   1905{
   1906    unsigned char* data = pixels + x + y * stride;
   1907    for (int j = h; j > 0; j--, data += stride)
   1908        for (int i = 0; i < w; i++)
   1909            data[i] = table[data[i]];
   1910}
   1911
   1912// Temporary data for one source font (multiple source fonts can be merged into one destination ImFont)
   1913// (C++03 doesn't allow instancing ImVector<> with function-local types so we declare the type here.)
   1914struct ImFontBuildSrcData
   1915{
   1916    stbtt_fontinfo      FontInfo;
   1917    stbtt_pack_range    PackRange;          // Hold the list of codepoints to pack (essentially points to Codepoints.Data)
   1918    stbrp_rect*         Rects;              // Rectangle to pack. We first fill in their size and the packer will give us their position.
   1919    stbtt_packedchar*   PackedChars;        // Output glyphs
   1920    const ImWchar*      SrcRanges;          // Ranges as requested by user (user is allowed to request too much, e.g. 0x0020..0xFFFF)
   1921    int                 DstIndex;           // Index into atlas->Fonts[] and dst_tmp_array[]
   1922    int                 GlyphsHighest;      // Highest requested codepoint
   1923    int                 GlyphsCount;        // Glyph count (excluding missing glyphs and glyphs already set by an earlier source font)
   1924    ImBitVector         GlyphsSet;          // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
   1925    ImVector<int>       GlyphsList;         // Glyph codepoints list (flattened version of GlyphsMap)
   1926};
   1927
   1928// Temporary data for one destination ImFont* (multiple source fonts can be merged into one destination ImFont)
   1929struct ImFontBuildDstData
   1930{
   1931    int                 SrcCount;           // Number of source fonts targeting this destination font.
   1932    int                 GlyphsHighest;
   1933    int                 GlyphsCount;
   1934    ImBitVector         GlyphsSet;          // This is used to resolve collision when multiple sources are merged into a same destination font.
   1935};
   1936
   1937static void UnpackBitVectorToFlatIndexList(const ImBitVector* in, ImVector<int>* out)
   1938{
   1939    IM_ASSERT(sizeof(in->Storage.Data[0]) == sizeof(int));
   1940    const ImU32* it_begin = in->Storage.begin();
   1941    const ImU32* it_end = in->Storage.end();
   1942    for (const ImU32* it = it_begin; it < it_end; it++)
   1943        if (ImU32 entries_32 = *it)
   1944            for (ImU32 bit_n = 0; bit_n < 32; bit_n++)
   1945                if (entries_32 & ((ImU32)1 << bit_n))
   1946                    out->push_back((int)(((it - it_begin) << 5) + bit_n));
   1947}
   1948
   1949bool    ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
   1950{
   1951    IM_ASSERT(atlas->ConfigData.Size > 0);
   1952
   1953    ImFontAtlasBuildInit(atlas);
   1954
   1955    // Clear atlas
   1956    atlas->TexID = (ImTextureID)NULL;
   1957    atlas->TexWidth = atlas->TexHeight = 0;
   1958    atlas->TexUvScale = ImVec2(0.0f, 0.0f);
   1959    atlas->TexUvWhitePixel = ImVec2(0.0f, 0.0f);
   1960    atlas->ClearTexData();
   1961
   1962    // Temporary storage for building
   1963    ImVector<ImFontBuildSrcData> src_tmp_array;
   1964    ImVector<ImFontBuildDstData> dst_tmp_array;
   1965    src_tmp_array.resize(atlas->ConfigData.Size);
   1966    dst_tmp_array.resize(atlas->Fonts.Size);
   1967    memset(src_tmp_array.Data, 0, (size_t)src_tmp_array.size_in_bytes());
   1968    memset(dst_tmp_array.Data, 0, (size_t)dst_tmp_array.size_in_bytes());
   1969
   1970    // 1. Initialize font loading structure, check font data validity
   1971    for (int src_i = 0; src_i < atlas->ConfigData.Size; src_i++)
   1972    {
   1973        ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
   1974        ImFontConfig& cfg = atlas->ConfigData[src_i];
   1975        IM_ASSERT(cfg.DstFont && (!cfg.DstFont->IsLoaded() || cfg.DstFont->ContainerAtlas == atlas));
   1976
   1977        // Find index from cfg.DstFont (we allow the user to set cfg.DstFont. Also it makes casual debugging nicer than when storing indices)
   1978        src_tmp.DstIndex = -1;
   1979        for (int output_i = 0; output_i < atlas->Fonts.Size && src_tmp.DstIndex == -1; output_i++)
   1980            if (cfg.DstFont == atlas->Fonts[output_i])
   1981                src_tmp.DstIndex = output_i;
   1982        IM_ASSERT(src_tmp.DstIndex != -1); // cfg.DstFont not pointing within atlas->Fonts[] array?
   1983        if (src_tmp.DstIndex == -1)
   1984            return false;
   1985
   1986        // Initialize helper structure for font loading and verify that the TTF/OTF data is correct
   1987        const int font_offset = stbtt_GetFontOffsetForIndex((unsigned char*)cfg.FontData, cfg.FontNo);
   1988        IM_ASSERT(font_offset >= 0 && "FontData is incorrect, or FontNo cannot be found.");
   1989        if (!stbtt_InitFont(&src_tmp.FontInfo, (unsigned char*)cfg.FontData, font_offset))
   1990            return false;
   1991
   1992        // Measure highest codepoints
   1993        ImFontBuildDstData& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
   1994        src_tmp.SrcRanges = cfg.GlyphRanges ? cfg.GlyphRanges : atlas->GetGlyphRangesDefault();
   1995        for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
   1996            src_tmp.GlyphsHighest = ImMax(src_tmp.GlyphsHighest, (int)src_range[1]);
   1997        dst_tmp.SrcCount++;
   1998        dst_tmp.GlyphsHighest = ImMax(dst_tmp.GlyphsHighest, src_tmp.GlyphsHighest);
   1999    }
   2000
   2001    // 2. For every requested codepoint, check for their presence in the font data, and handle redundancy or overlaps between source fonts to avoid unused glyphs.
   2002    int total_glyphs_count = 0;
   2003    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
   2004    {
   2005        ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
   2006        ImFontBuildDstData& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
   2007        src_tmp.GlyphsSet.Create(src_tmp.GlyphsHighest + 1);
   2008        if (dst_tmp.GlyphsSet.Storage.empty())
   2009            dst_tmp.GlyphsSet.Create(dst_tmp.GlyphsHighest + 1);
   2010
   2011        for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
   2012            for (unsigned int codepoint = src_range[0]; codepoint <= src_range[1]; codepoint++)
   2013            {
   2014                if (dst_tmp.GlyphsSet.TestBit(codepoint))    // Don't overwrite existing glyphs. We could make this an option for MergeMode (e.g. MergeOverwrite==true)
   2015                    continue;
   2016                if (!stbtt_FindGlyphIndex(&src_tmp.FontInfo, codepoint))    // It is actually in the font?
   2017                    continue;
   2018
   2019                // Add to avail set/counters
   2020                src_tmp.GlyphsCount++;
   2021                dst_tmp.GlyphsCount++;
   2022                src_tmp.GlyphsSet.SetBit(codepoint);
   2023                dst_tmp.GlyphsSet.SetBit(codepoint);
   2024                total_glyphs_count++;
   2025            }
   2026    }
   2027
   2028    // 3. Unpack our bit map into a flat list (we now have all the Unicode points that we know are requested _and_ available _and_ not overlapping another)
   2029    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
   2030    {
   2031        ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
   2032        src_tmp.GlyphsList.reserve(src_tmp.GlyphsCount);
   2033        UnpackBitVectorToFlatIndexList(&src_tmp.GlyphsSet, &src_tmp.GlyphsList);
   2034        src_tmp.GlyphsSet.Clear();
   2035        IM_ASSERT(src_tmp.GlyphsList.Size == src_tmp.GlyphsCount);
   2036    }
   2037    for (int dst_i = 0; dst_i < dst_tmp_array.Size; dst_i++)
   2038        dst_tmp_array[dst_i].GlyphsSet.Clear();
   2039    dst_tmp_array.clear();
   2040
   2041    // Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0)
   2042    // (We technically don't need to zero-clear buf_rects, but let's do it for the sake of sanity)
   2043    ImVector<stbrp_rect> buf_rects;
   2044    ImVector<stbtt_packedchar> buf_packedchars;
   2045    buf_rects.resize(total_glyphs_count);
   2046    buf_packedchars.resize(total_glyphs_count);
   2047    memset(buf_rects.Data, 0, (size_t)buf_rects.size_in_bytes());
   2048    memset(buf_packedchars.Data, 0, (size_t)buf_packedchars.size_in_bytes());
   2049
   2050    // 4. Gather glyphs sizes so we can pack them in our virtual canvas.
   2051    int total_surface = 0;
   2052    int buf_rects_out_n = 0;
   2053    int buf_packedchars_out_n = 0;
   2054    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
   2055    {
   2056        ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
   2057        if (src_tmp.GlyphsCount == 0)
   2058            continue;
   2059
   2060        src_tmp.Rects = &buf_rects[buf_rects_out_n];
   2061        src_tmp.PackedChars = &buf_packedchars[buf_packedchars_out_n];
   2062        buf_rects_out_n += src_tmp.GlyphsCount;
   2063        buf_packedchars_out_n += src_tmp.GlyphsCount;
   2064
   2065        // Convert our ranges in the format stb_truetype wants
   2066        ImFontConfig& cfg = atlas->ConfigData[src_i];
   2067        src_tmp.PackRange.font_size = cfg.SizePixels;
   2068        src_tmp.PackRange.first_unicode_codepoint_in_range = 0;
   2069        src_tmp.PackRange.array_of_unicode_codepoints = src_tmp.GlyphsList.Data;
   2070        src_tmp.PackRange.num_chars = src_tmp.GlyphsList.Size;
   2071        src_tmp.PackRange.chardata_for_range = src_tmp.PackedChars;
   2072        src_tmp.PackRange.h_oversample = (unsigned char)cfg.OversampleH;
   2073        src_tmp.PackRange.v_oversample = (unsigned char)cfg.OversampleV;
   2074
   2075        // Gather the sizes of all rectangles we will need to pack (this loop is based on stbtt_PackFontRangesGatherRects)
   2076        const float scale = (cfg.SizePixels > 0) ? stbtt_ScaleForPixelHeight(&src_tmp.FontInfo, cfg.SizePixels) : stbtt_ScaleForMappingEmToPixels(&src_tmp.FontInfo, -cfg.SizePixels);
   2077        const int padding = atlas->TexGlyphPadding;
   2078        for (int glyph_i = 0; glyph_i < src_tmp.GlyphsList.Size; glyph_i++)
   2079        {
   2080            int x0, y0, x1, y1;
   2081            const int glyph_index_in_font = stbtt_FindGlyphIndex(&src_tmp.FontInfo, src_tmp.GlyphsList[glyph_i]);
   2082            IM_ASSERT(glyph_index_in_font != 0);
   2083            stbtt_GetGlyphBitmapBoxSubpixel(&src_tmp.FontInfo, glyph_index_in_font, scale * cfg.OversampleH, scale * cfg.OversampleV, 0, 0, &x0, &y0, &x1, &y1);
   2084            src_tmp.Rects[glyph_i].w = (stbrp_coord)(x1 - x0 + padding + cfg.OversampleH - 1);
   2085            src_tmp.Rects[glyph_i].h = (stbrp_coord)(y1 - y0 + padding + cfg.OversampleV - 1);
   2086            total_surface += src_tmp.Rects[glyph_i].w * src_tmp.Rects[glyph_i].h;
   2087        }
   2088    }
   2089
   2090    // We need a width for the skyline algorithm, any width!
   2091    // The exact width doesn't really matter much, but some API/GPU have texture size limitations and increasing width can decrease height.
   2092    // User can override TexDesiredWidth and TexGlyphPadding if they wish, otherwise we use a simple heuristic to select the width based on expected surface.
   2093    const int surface_sqrt = (int)ImSqrt((float)total_surface) + 1;
   2094    atlas->TexHeight = 0;
   2095    if (atlas->TexDesiredWidth > 0)
   2096        atlas->TexWidth = atlas->TexDesiredWidth;
   2097    else
   2098        atlas->TexWidth = (surface_sqrt >= 4096*0.7f) ? 4096 : (surface_sqrt >= 2048*0.7f) ? 2048 : (surface_sqrt >= 1024*0.7f) ? 1024 : 512;
   2099
   2100    // 5. Start packing
   2101    // Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values).
   2102    const int TEX_HEIGHT_MAX = 1024 * 32;
   2103    stbtt_pack_context spc = {};
   2104    stbtt_PackBegin(&spc, NULL, atlas->TexWidth, TEX_HEIGHT_MAX, 0, atlas->TexGlyphPadding, NULL);
   2105    ImFontAtlasBuildPackCustomRects(atlas, spc.pack_info);
   2106
   2107    // 6. Pack each source font. No rendering yet, we are working with rectangles in an infinitely tall texture at this point.
   2108    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
   2109    {
   2110        ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
   2111        if (src_tmp.GlyphsCount == 0)
   2112            continue;
   2113
   2114        stbrp_pack_rects((stbrp_context*)spc.pack_info, src_tmp.Rects, src_tmp.GlyphsCount);
   2115
   2116        // Extend texture height and mark missing glyphs as non-packed so we won't render them.
   2117        // FIXME: We are not handling packing failure here (would happen if we got off TEX_HEIGHT_MAX or if a single if larger than TexWidth?)
   2118        for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
   2119            if (src_tmp.Rects[glyph_i].was_packed)
   2120                atlas->TexHeight = ImMax(atlas->TexHeight, src_tmp.Rects[glyph_i].y + src_tmp.Rects[glyph_i].h);
   2121    }
   2122
   2123    // 7. Allocate texture
   2124    atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);
   2125    atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
   2126    atlas->TexPixelsAlpha8 = (unsigned char*)IM_ALLOC(atlas->TexWidth * atlas->TexHeight);
   2127    memset(atlas->TexPixelsAlpha8, 0, atlas->TexWidth * atlas->TexHeight);
   2128    spc.pixels = atlas->TexPixelsAlpha8;
   2129    spc.height = atlas->TexHeight;
   2130
   2131    // 8. Render/rasterize font characters into the texture
   2132    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
   2133    {
   2134        ImFontConfig& cfg = atlas->ConfigData[src_i];
   2135        ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
   2136        if (src_tmp.GlyphsCount == 0)
   2137            continue;
   2138
   2139        stbtt_PackFontRangesRenderIntoRects(&spc, &src_tmp.FontInfo, &src_tmp.PackRange, 1, src_tmp.Rects);
   2140
   2141        // Apply multiply operator
   2142        if (cfg.RasterizerMultiply != 1.0f)
   2143        {
   2144            unsigned char multiply_table[256];
   2145            ImFontAtlasBuildMultiplyCalcLookupTable(multiply_table, cfg.RasterizerMultiply);
   2146            stbrp_rect* r = &src_tmp.Rects[0];
   2147            for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++, r++)
   2148                if (r->was_packed)
   2149                    ImFontAtlasBuildMultiplyRectAlpha8(multiply_table, atlas->TexPixelsAlpha8, r->x, r->y, r->w, r->h, atlas->TexWidth * 1);
   2150        }
   2151        src_tmp.Rects = NULL;
   2152    }
   2153
   2154    // End packing
   2155    stbtt_PackEnd(&spc);
   2156    buf_rects.clear();
   2157
   2158    // 9. Setup ImFont and glyphs for runtime
   2159    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
   2160    {
   2161        ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];
   2162        if (src_tmp.GlyphsCount == 0)
   2163            continue;
   2164
   2165        ImFontConfig& cfg = atlas->ConfigData[src_i];
   2166        ImFont* dst_font = cfg.DstFont; // We can have multiple input fonts writing into a same destination font (when using MergeMode=true)
   2167
   2168        const float font_scale = stbtt_ScaleForPixelHeight(&src_tmp.FontInfo, cfg.SizePixels);
   2169        int unscaled_ascent, unscaled_descent, unscaled_line_gap;
   2170        stbtt_GetFontVMetrics(&src_tmp.FontInfo, &unscaled_ascent, &unscaled_descent, &unscaled_line_gap);
   2171
   2172        const float ascent = ImFloor(unscaled_ascent * font_scale + ((unscaled_ascent > 0.0f) ? +1 : -1));
   2173        const float descent = ImFloor(unscaled_descent * font_scale + ((unscaled_descent > 0.0f) ? +1 : -1));
   2174        ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);
   2175        const float font_off_x = cfg.GlyphOffset.x;
   2176        const float font_off_y = cfg.GlyphOffset.y + IM_ROUND(dst_font->Ascent);
   2177
   2178        for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
   2179        {
   2180            const int codepoint = src_tmp.GlyphsList[glyph_i];
   2181            const stbtt_packedchar& pc = src_tmp.PackedChars[glyph_i];
   2182
   2183            const float char_advance_x_org = pc.xadvance;
   2184            const float char_advance_x_mod = ImClamp(char_advance_x_org, cfg.GlyphMinAdvanceX, cfg.GlyphMaxAdvanceX);
   2185            float char_off_x = font_off_x;
   2186            if (char_advance_x_org != char_advance_x_mod)
   2187                char_off_x += cfg.PixelSnapH ? ImFloor((char_advance_x_mod - char_advance_x_org) * 0.5f) : (char_advance_x_mod - char_advance_x_org) * 0.5f;
   2188
   2189            // Register glyph
   2190            stbtt_aligned_quad q;
   2191            float dummy_x = 0.0f, dummy_y = 0.0f;
   2192            stbtt_GetPackedQuad(src_tmp.PackedChars, atlas->TexWidth, atlas->TexHeight, glyph_i, &dummy_x, &dummy_y, &q, 0);
   2193            dst_font->AddGlyph((ImWchar)codepoint, q.x0 + char_off_x, q.y0 + font_off_y, q.x1 + char_off_x, q.y1 + font_off_y, q.s0, q.t0, q.s1, q.t1, char_advance_x_mod);
   2194        }
   2195    }
   2196
   2197    // Cleanup temporary (ImVector doesn't honor destructor)
   2198    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
   2199        src_tmp_array[src_i].~ImFontBuildSrcData();
   2200
   2201    ImFontAtlasBuildFinish(atlas);
   2202    return true;
   2203}
   2204
   2205// Register default custom rectangles (this is called/shared by both the stb_truetype and the FreeType builder)
   2206void ImFontAtlasBuildInit(ImFontAtlas* atlas)
   2207{
   2208    if (atlas->CustomRectIds[0] >= 0)
   2209        return;
   2210    if (!(atlas->Flags & ImFontAtlasFlags_NoMouseCursors))
   2211        atlas->CustomRectIds[0] = atlas->AddCustomRectRegular(FONT_ATLAS_DEFAULT_TEX_DATA_ID, FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF*2+1, FONT_ATLAS_DEFAULT_TEX_DATA_H);
   2212    else
   2213        atlas->CustomRectIds[0] = atlas->AddCustomRectRegular(FONT_ATLAS_DEFAULT_TEX_DATA_ID, 2, 2);
   2214}
   2215
   2216void ImFontAtlasBuildSetupFont(ImFontAtlas* atlas, ImFont* font, ImFontConfig* font_config, float ascent, float descent)
   2217{
   2218    if (!font_config->MergeMode)
   2219    {
   2220        font->ClearOutputData();
   2221        font->FontSize = font_config->SizePixels;
   2222        font->ConfigData = font_config;
   2223        font->ContainerAtlas = atlas;
   2224        font->Ascent = ascent;
   2225        font->Descent = descent;
   2226    }
   2227    font->ConfigDataCount++;
   2228}
   2229
   2230void ImFontAtlasBuildPackCustomRects(ImFontAtlas* atlas, void* stbrp_context_opaque)
   2231{
   2232    stbrp_context* pack_context = (stbrp_context*)stbrp_context_opaque;
   2233    IM_ASSERT(pack_context != NULL);
   2234
   2235    ImVector<ImFontAtlasCustomRect>& user_rects = atlas->CustomRects;
   2236    IM_ASSERT(user_rects.Size >= 1); // We expect at least the default custom rects to be registered, else something went wrong.
   2237
   2238    ImVector<stbrp_rect> pack_rects;
   2239    pack_rects.resize(user_rects.Size);
   2240    memset(pack_rects.Data, 0, (size_t)pack_rects.size_in_bytes());
   2241    for (int i = 0; i < user_rects.Size; i++)
   2242    {
   2243        pack_rects[i].w = user_rects[i].Width;
   2244        pack_rects[i].h = user_rects[i].Height;
   2245    }
   2246    stbrp_pack_rects(pack_context, &pack_rects[0], pack_rects.Size);
   2247    for (int i = 0; i < pack_rects.Size; i++)
   2248        if (pack_rects[i].was_packed)
   2249        {
   2250            user_rects[i].X = pack_rects[i].x;
   2251            user_rects[i].Y = pack_rects[i].y;
   2252            IM_ASSERT(pack_rects[i].w == user_rects[i].Width && pack_rects[i].h == user_rects[i].Height);
   2253            atlas->TexHeight = ImMax(atlas->TexHeight, pack_rects[i].y + pack_rects[i].h);
   2254        }
   2255}
   2256
   2257static void ImFontAtlasBuildRenderDefaultTexData(ImFontAtlas* atlas)
   2258{
   2259    IM_ASSERT(atlas->CustomRectIds[0] >= 0);
   2260    IM_ASSERT(atlas->TexPixelsAlpha8 != NULL);
   2261    ImFontAtlasCustomRect& r = atlas->CustomRects[atlas->CustomRectIds[0]];
   2262    IM_ASSERT(r.ID == FONT_ATLAS_DEFAULT_TEX_DATA_ID);
   2263    IM_ASSERT(r.IsPacked());
   2264
   2265    const int w = atlas->TexWidth;
   2266    if (!(atlas->Flags & ImFontAtlasFlags_NoMouseCursors))
   2267    {
   2268        // Render/copy pixels
   2269        IM_ASSERT(r.Width == FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF * 2 + 1 && r.Height == FONT_ATLAS_DEFAULT_TEX_DATA_H);
   2270        for (int y = 0, n = 0; y < FONT_ATLAS_DEFAULT_TEX_DATA_H; y++)
   2271            for (int x = 0; x < FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF; x++, n++)
   2272            {
   2273                const int offset0 = (int)(r.X + x) + (int)(r.Y + y) * w;
   2274                const int offset1 = offset0 + FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF + 1;
   2275                atlas->TexPixelsAlpha8[offset0] = FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[n] == '.' ? 0xFF : 0x00;
   2276                atlas->TexPixelsAlpha8[offset1] = FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[n] == 'X' ? 0xFF : 0x00;
   2277            }
   2278    }
   2279    else
   2280    {
   2281        IM_ASSERT(r.Width == 2 && r.Height == 2);
   2282        const int offset = (int)(r.X) + (int)(r.Y) * w;
   2283        atlas->TexPixelsAlpha8[offset] = atlas->TexPixelsAlpha8[offset + 1] = atlas->TexPixelsAlpha8[offset + w] = atlas->TexPixelsAlpha8[offset + w + 1] = 0xFF;
   2284    }
   2285    atlas->TexUvWhitePixel = ImVec2((r.X + 0.5f) * atlas->TexUvScale.x, (r.Y + 0.5f) * atlas->TexUvScale.y);
   2286}
   2287
   2288void ImFontAtlasBuildFinish(ImFontAtlas* atlas)
   2289{
   2290    // Render into our custom data block
   2291    ImFontAtlasBuildRenderDefaultTexData(atlas);
   2292
   2293    // Register custom rectangle glyphs
   2294    for (int i = 0; i < atlas->CustomRects.Size; i++)
   2295    {
   2296        const ImFontAtlasCustomRect& r = atlas->CustomRects[i];
   2297        if (r.Font == NULL || r.ID >= 0x110000)
   2298            continue;
   2299
   2300        IM_ASSERT(r.Font->ContainerAtlas == atlas);
   2301        ImVec2 uv0, uv1;
   2302        atlas->CalcCustomRectUV(&r, &uv0, &uv1);
   2303        r.Font->AddGlyph((ImWchar)r.ID, r.GlyphOffset.x, r.GlyphOffset.y, r.GlyphOffset.x + r.Width, r.GlyphOffset.y + r.Height, uv0.x, uv0.y, uv1.x, uv1.y, r.GlyphAdvanceX);
   2304    }
   2305
   2306    // Build all fonts lookup tables
   2307    for (int i = 0; i < atlas->Fonts.Size; i++)
   2308        if (atlas->Fonts[i]->DirtyLookupTables)
   2309            atlas->Fonts[i]->BuildLookupTable();
   2310
   2311    // Ellipsis character is required for rendering elided text. We prefer using U+2026 (horizontal ellipsis).
   2312    // However some old fonts may contain ellipsis at U+0085. Here we auto-detect most suitable ellipsis character.
   2313    // FIXME: Also note that 0x2026 is currently seldomly included in our font ranges. Because of this we are more likely to use three individual dots.
   2314    for (int i = 0; i < atlas->Fonts.size(); i++)
   2315    {
   2316        ImFont* font = atlas->Fonts[i];
   2317        if (font->EllipsisChar != (ImWchar)-1)
   2318            continue;
   2319        const ImWchar ellipsis_variants[] = { (ImWchar)0x2026, (ImWchar)0x0085 };
   2320        for (int j = 0; j < IM_ARRAYSIZE(ellipsis_variants); j++)
   2321            if (font->FindGlyphNoFallback(ellipsis_variants[j]) != NULL) // Verify glyph exists
   2322            {
   2323                font->EllipsisChar = ellipsis_variants[j];
   2324                break;
   2325            }
   2326    }
   2327}
   2328
   2329// Retrieve list of range (2 int per range, values are inclusive)
   2330const ImWchar*   ImFontAtlas::GetGlyphRangesDefault()
   2331{
   2332    static const ImWchar ranges[] =
   2333    {
   2334        0x0020, 0x00FF, // Basic Latin + Latin Supplement
   2335        0,
   2336    };
   2337    return &ranges[0];
   2338}
   2339
   2340const ImWchar*  ImFontAtlas::GetGlyphRangesKorean()
   2341{
   2342    static const ImWchar ranges[] =
   2343    {
   2344        0x0020, 0x00FF, // Basic Latin + Latin Supplement
   2345        0x3131, 0x3163, // Korean alphabets
   2346        0xAC00, 0xD79D, // Korean characters
   2347        0,
   2348    };
   2349    return &ranges[0];
   2350}
   2351
   2352const ImWchar*  ImFontAtlas::GetGlyphRangesChineseFull()
   2353{
   2354    static const ImWchar ranges[] =
   2355    {
   2356        0x0020, 0x00FF, // Basic Latin + Latin Supplement
   2357        0x2000, 0x206F, // General Punctuation
   2358        0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana
   2359        0x31F0, 0x31FF, // Katakana Phonetic Extensions
   2360        0xFF00, 0xFFEF, // Half-width characters
   2361        0x4e00, 0x9FAF, // CJK Ideograms
   2362        0,
   2363    };
   2364    return &ranges[0];
   2365}
   2366
   2367static void UnpackAccumulativeOffsetsIntoRanges(int base_codepoint, const short* accumulative_offsets, int accumulative_offsets_count, ImWchar* out_ranges)
   2368{
   2369    for (int n = 0; n < accumulative_offsets_count; n++, out_ranges += 2)
   2370    {
   2371        out_ranges[0] = out_ranges[1] = (ImWchar)(base_codepoint + accumulative_offsets[n]);
   2372        base_codepoint += accumulative_offsets[n];
   2373    }
   2374    out_ranges[0] = 0;
   2375}
   2376
   2377//-------------------------------------------------------------------------
   2378// [SECTION] ImFontAtlas glyph ranges helpers
   2379//-------------------------------------------------------------------------
   2380
   2381const ImWchar*  ImFontAtlas::GetGlyphRangesChineseSimplifiedCommon()
   2382{
   2383    // Store 2500 regularly used characters for Simplified Chinese.
   2384    // Sourced from https://zh.wiktionary.org/wiki/%E9%99%84%E5%BD%95:%E7%8E%B0%E4%BB%A3%E6%B1%89%E8%AF%AD%E5%B8%B8%E7%94%A8%E5%AD%97%E8%A1%A8
   2385    // This table covers 97.97% of all characters used during the month in July, 1987.
   2386    // You can use ImFontGlyphRangesBuilder to create your own ranges derived from this, by merging existing ranges or adding new characters.
   2387    // (Stored as accumulative offsets from the initial unicode codepoint 0x4E00. This encoding is designed to helps us compact the source code size.)
   2388    static const short accumulative_offsets_from_0x4E00[] =
   2389    {
   2390        0,1,2,4,1,1,1,1,2,1,3,2,1,2,2,1,1,1,1,1,5,2,1,2,3,3,3,2,2,4,1,1,1,2,1,5,2,3,1,2,1,2,1,1,2,1,1,2,2,1,4,1,1,1,1,5,10,1,2,19,2,1,2,1,2,1,2,1,2,
   2391        1,5,1,6,3,2,1,2,2,1,1,1,4,8,5,1,1,4,1,1,3,1,2,1,5,1,2,1,1,1,10,1,1,5,2,4,6,1,4,2,2,2,12,2,1,1,6,1,1,1,4,1,1,4,6,5,1,4,2,2,4,10,7,1,1,4,2,4,
   2392        2,1,4,3,6,10,12,5,7,2,14,2,9,1,1,6,7,10,4,7,13,1,5,4,8,4,1,1,2,28,5,6,1,1,5,2,5,20,2,2,9,8,11,2,9,17,1,8,6,8,27,4,6,9,20,11,27,6,68,2,2,1,1,
   2393        1,2,1,2,2,7,6,11,3,3,1,1,3,1,2,1,1,1,1,1,3,1,1,8,3,4,1,5,7,2,1,4,4,8,4,2,1,2,1,1,4,5,6,3,6,2,12,3,1,3,9,2,4,3,4,1,5,3,3,1,3,7,1,5,1,1,1,1,2,
   2394        3,4,5,2,3,2,6,1,1,2,1,7,1,7,3,4,5,15,2,2,1,5,3,22,19,2,1,1,1,1,2,5,1,1,1,6,1,1,12,8,2,9,18,22,4,1,1,5,1,16,1,2,7,10,15,1,1,6,2,4,1,2,4,1,6,
   2395        1,1,3,2,4,1,6,4,5,1,2,1,1,2,1,10,3,1,3,2,1,9,3,2,5,7,2,19,4,3,6,1,1,1,1,1,4,3,2,1,1,1,2,5,3,1,1,1,2,2,1,1,2,1,1,2,1,3,1,1,1,3,7,1,4,1,1,2,1,
   2396        1,2,1,2,4,4,3,8,1,1,1,2,1,3,5,1,3,1,3,4,6,2,2,14,4,6,6,11,9,1,15,3,1,28,5,2,5,5,3,1,3,4,5,4,6,14,3,2,3,5,21,2,7,20,10,1,2,19,2,4,28,28,2,3,
   2397        2,1,14,4,1,26,28,42,12,40,3,52,79,5,14,17,3,2,2,11,3,4,6,3,1,8,2,23,4,5,8,10,4,2,7,3,5,1,1,6,3,1,2,2,2,5,28,1,1,7,7,20,5,3,29,3,17,26,1,8,4,
   2398        27,3,6,11,23,5,3,4,6,13,24,16,6,5,10,25,35,7,3,2,3,3,14,3,6,2,6,1,4,2,3,8,2,1,1,3,3,3,4,1,1,13,2,2,4,5,2,1,14,14,1,2,2,1,4,5,2,3,1,14,3,12,
   2399        3,17,2,16,5,1,2,1,8,9,3,19,4,2,2,4,17,25,21,20,28,75,1,10,29,103,4,1,2,1,1,4,2,4,1,2,3,24,2,2,2,1,1,2,1,3,8,1,1,1,2,1,1,3,1,1,1,6,1,5,3,1,1,
   2400        1,3,4,1,1,5,2,1,5,6,13,9,16,1,1,1,1,3,2,3,2,4,5,2,5,2,2,3,7,13,7,2,2,1,1,1,1,2,3,3,2,1,6,4,9,2,1,14,2,14,2,1,18,3,4,14,4,11,41,15,23,15,23,
   2401        176,1,3,4,1,1,1,1,5,3,1,2,3,7,3,1,1,2,1,2,4,4,6,2,4,1,9,7,1,10,5,8,16,29,1,1,2,2,3,1,3,5,2,4,5,4,1,1,2,2,3,3,7,1,6,10,1,17,1,44,4,6,2,1,1,6,
   2402        5,4,2,10,1,6,9,2,8,1,24,1,2,13,7,8,8,2,1,4,1,3,1,3,3,5,2,5,10,9,4,9,12,2,1,6,1,10,1,1,7,7,4,10,8,3,1,13,4,3,1,6,1,3,5,2,1,2,17,16,5,2,16,6,
   2403        1,4,2,1,3,3,6,8,5,11,11,1,3,3,2,4,6,10,9,5,7,4,7,4,7,1,1,4,2,1,3,6,8,7,1,6,11,5,5,3,24,9,4,2,7,13,5,1,8,82,16,61,1,1,1,4,2,2,16,10,3,8,1,1,
   2404        6,4,2,1,3,1,1,1,4,3,8,4,2,2,1,1,1,1,1,6,3,5,1,1,4,6,9,2,1,1,1,2,1,7,2,1,6,1,5,4,4,3,1,8,1,3,3,1,3,2,2,2,2,3,1,6,1,2,1,2,1,3,7,1,8,2,1,2,1,5,
   2405        2,5,3,5,10,1,2,1,1,3,2,5,11,3,9,3,5,1,1,5,9,1,2,1,5,7,9,9,8,1,3,3,3,6,8,2,3,2,1,1,32,6,1,2,15,9,3,7,13,1,3,10,13,2,14,1,13,10,2,1,3,10,4,15,
   2406        2,15,15,10,1,3,9,6,9,32,25,26,47,7,3,2,3,1,6,3,4,3,2,8,5,4,1,9,4,2,2,19,10,6,2,3,8,1,2,2,4,2,1,9,4,4,4,6,4,8,9,2,3,1,1,1,1,3,5,5,1,3,8,4,6,
   2407        2,1,4,12,1,5,3,7,13,2,5,8,1,6,1,2,5,14,6,1,5,2,4,8,15,5,1,23,6,62,2,10,1,1,8,1,2,2,10,4,2,2,9,2,1,1,3,2,3,1,5,3,3,2,1,3,8,1,1,1,11,3,1,1,4,
   2408        3,7,1,14,1,2,3,12,5,2,5,1,6,7,5,7,14,11,1,3,1,8,9,12,2,1,11,8,4,4,2,6,10,9,13,1,1,3,1,5,1,3,2,4,4,1,18,2,3,14,11,4,29,4,2,7,1,3,13,9,2,2,5,
   2409        3,5,20,7,16,8,5,72,34,6,4,22,12,12,28,45,36,9,7,39,9,191,1,1,1,4,11,8,4,9,2,3,22,1,1,1,1,4,17,1,7,7,1,11,31,10,2,4,8,2,3,2,1,4,2,16,4,32,2,
   2410        3,19,13,4,9,1,5,2,14,8,1,1,3,6,19,6,5,1,16,6,2,10,8,5,1,2,3,1,5,5,1,11,6,6,1,3,3,2,6,3,8,1,1,4,10,7,5,7,7,5,8,9,2,1,3,4,1,1,3,1,3,3,2,6,16,
   2411        1,4,6,3,1,10,6,1,3,15,2,9,2,10,25,13,9,16,6,2,2,10,11,4,3,9,1,2,6,6,5,4,30,40,1,10,7,12,14,33,6,3,6,7,3,1,3,1,11,14,4,9,5,12,11,49,18,51,31,
   2412        140,31,2,2,1,5,1,8,1,10,1,4,4,3,24,1,10,1,3,6,6,16,3,4,5,2,1,4,2,57,10,6,22,2,22,3,7,22,6,10,11,36,18,16,33,36,2,5,5,1,1,1,4,10,1,4,13,2,7,
   2413        5,2,9,3,4,1,7,43,3,7,3,9,14,7,9,1,11,1,1,3,7,4,18,13,1,14,1,3,6,10,73,2,2,30,6,1,11,18,19,13,22,3,46,42,37,89,7,3,16,34,2,2,3,9,1,7,1,1,1,2,
   2414        2,4,10,7,3,10,3,9,5,28,9,2,6,13,7,3,1,3,10,2,7,2,11,3,6,21,54,85,2,1,4,2,2,1,39,3,21,2,2,5,1,1,1,4,1,1,3,4,15,1,3,2,4,4,2,3,8,2,20,1,8,7,13,
   2415        4,1,26,6,2,9,34,4,21,52,10,4,4,1,5,12,2,11,1,7,2,30,12,44,2,30,1,1,3,6,16,9,17,39,82,2,2,24,7,1,7,3,16,9,14,44,2,1,2,1,2,3,5,2,4,1,6,7,5,3,
   2416        2,6,1,11,5,11,2,1,18,19,8,1,3,24,29,2,1,3,5,2,2,1,13,6,5,1,46,11,3,5,1,1,5,8,2,10,6,12,6,3,7,11,2,4,16,13,2,5,1,1,2,2,5,2,28,5,2,23,10,8,4,
   2417        4,22,39,95,38,8,14,9,5,1,13,5,4,3,13,12,11,1,9,1,27,37,2,5,4,4,63,211,95,2,2,2,1,3,5,2,1,1,2,2,1,1,1,3,2,4,1,2,1,1,5,2,2,1,1,2,3,1,3,1,1,1,
   2418        3,1,4,2,1,3,6,1,1,3,7,15,5,3,2,5,3,9,11,4,2,22,1,6,3,8,7,1,4,28,4,16,3,3,25,4,4,27,27,1,4,1,2,2,7,1,3,5,2,28,8,2,14,1,8,6,16,25,3,3,3,14,3,
   2419        3,1,1,2,1,4,6,3,8,4,1,1,1,2,3,6,10,6,2,3,18,3,2,5,5,4,3,1,5,2,5,4,23,7,6,12,6,4,17,11,9,5,1,1,10,5,12,1,1,11,26,33,7,3,6,1,17,7,1,5,12,1,11,
   2420        2,4,1,8,14,17,23,1,2,1,7,8,16,11,9,6,5,2,6,4,16,2,8,14,1,11,8,9,1,1,1,9,25,4,11,19,7,2,15,2,12,8,52,7,5,19,2,16,4,36,8,1,16,8,24,26,4,6,2,9,
   2421        5,4,36,3,28,12,25,15,37,27,17,12,59,38,5,32,127,1,2,9,17,14,4,1,2,1,1,8,11,50,4,14,2,19,16,4,17,5,4,5,26,12,45,2,23,45,104,30,12,8,3,10,2,2,
   2422        3,3,1,4,20,7,2,9,6,15,2,20,1,3,16,4,11,15,6,134,2,5,59,1,2,2,2,1,9,17,3,26,137,10,211,59,1,2,4,1,4,1,1,1,2,6,2,3,1,1,2,3,2,3,1,3,4,4,2,3,3,
   2423        1,4,3,1,7,2,2,3,1,2,1,3,3,3,2,2,3,2,1,3,14,6,1,3,2,9,6,15,27,9,34,145,1,1,2,1,1,1,1,2,1,1,1,1,2,2,2,3,1,2,1,1,1,2,3,5,8,3,5,2,4,1,3,2,2,2,12,
   2424        4,1,1,1,10,4,5,1,20,4,16,1,15,9,5,12,2,9,2,5,4,2,26,19,7,1,26,4,30,12,15,42,1,6,8,172,1,1,4,2,1,1,11,2,2,4,2,1,2,1,10,8,1,2,1,4,5,1,2,5,1,8,
   2425        4,1,3,4,2,1,6,2,1,3,4,1,2,1,1,1,1,12,5,7,2,4,3,1,1,1,3,3,6,1,2,2,3,3,3,2,1,2,12,14,11,6,6,4,12,2,8,1,7,10,1,35,7,4,13,15,4,3,23,21,28,52,5,
   2426        26,5,6,1,7,10,2,7,53,3,2,1,1,1,2,163,532,1,10,11,1,3,3,4,8,2,8,6,2,2,23,22,4,2,2,4,2,1,3,1,3,3,5,9,8,2,1,2,8,1,10,2,12,21,20,15,105,2,3,1,1,
   2427        3,2,3,1,1,2,5,1,4,15,11,19,1,1,1,1,5,4,5,1,1,2,5,3,5,12,1,2,5,1,11,1,1,15,9,1,4,5,3,26,8,2,1,3,1,1,15,19,2,12,1,2,5,2,7,2,19,2,20,6,26,7,5,
   2428        2,2,7,34,21,13,70,2,128,1,1,2,1,1,2,1,1,3,2,2,2,15,1,4,1,3,4,42,10,6,1,49,85,8,1,2,1,1,4,4,2,3,6,1,5,7,4,3,211,4,1,2,1,2,5,1,2,4,2,2,6,5,6,
   2429        10,3,4,48,100,6,2,16,296,5,27,387,2,2,3,7,16,8,5,38,15,39,21,9,10,3,7,59,13,27,21,47,5,21,6
   2430    };
   2431    static ImWchar base_ranges[] = // not zero-terminated
   2432    {
   2433        0x0020, 0x00FF, // Basic Latin + Latin Supplement
   2434        0x2000, 0x206F, // General Punctuation
   2435        0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana
   2436        0x31F0, 0x31FF, // Katakana Phonetic Extensions
   2437        0xFF00, 0xFFEF  // Half-width characters
   2438    };
   2439    static ImWchar full_ranges[IM_ARRAYSIZE(base_ranges) + IM_ARRAYSIZE(accumulative_offsets_from_0x4E00) * 2 + 1] = { 0 };
   2440    if (!full_ranges[0])
   2441    {
   2442        memcpy(full_ranges, base_ranges, sizeof(base_ranges));
   2443        UnpackAccumulativeOffsetsIntoRanges(0x4E00, accumulative_offsets_from_0x4E00, IM_ARRAYSIZE(accumulative_offsets_from_0x4E00), full_ranges + IM_ARRAYSIZE(base_ranges));
   2444    }
   2445    return &full_ranges[0];
   2446}
   2447
   2448const ImWchar*  ImFontAtlas::GetGlyphRangesJapanese()
   2449{
   2450    // 1946 common ideograms code points for Japanese
   2451    // Sourced from http://theinstructionlimit.com/common-kanji-character-ranges-for-xna-spritefont-rendering
   2452    // FIXME: Source a list of the revised 2136 Joyo Kanji list from 2010 and rebuild this.
   2453    // You can use ImFontGlyphRangesBuilder to create your own ranges derived from this, by merging existing ranges or adding new characters.
   2454    // (Stored as accumulative offsets from the initial unicode codepoint 0x4E00. This encoding is designed to helps us compact the source code size.)
   2455    static const short accumulative_offsets_from_0x4E00[] =
   2456    {
   2457        0,1,2,4,1,1,1,1,2,1,6,2,2,1,8,5,7,11,1,2,10,10,8,2,4,20,2,11,8,2,1,2,1,6,2,1,7,5,3,7,1,1,13,7,9,1,4,6,1,2,1,10,1,1,9,2,2,4,5,6,14,1,1,9,3,18,
   2458        5,4,2,2,10,7,1,1,1,3,2,4,3,23,2,10,12,2,14,2,4,13,1,6,10,3,1,7,13,6,4,13,5,2,3,17,2,2,5,7,6,4,1,7,14,16,6,13,9,15,1,1,7,16,4,7,1,19,9,2,7,15,
   2459        2,6,5,13,25,4,14,13,11,25,1,1,1,2,1,2,2,3,10,11,3,3,1,1,4,4,2,1,4,9,1,4,3,5,5,2,7,12,11,15,7,16,4,5,16,2,1,1,6,3,3,1,1,2,7,6,6,7,1,4,7,6,1,1,
   2460        2,1,12,3,3,9,5,8,1,11,1,2,3,18,20,4,1,3,6,1,7,3,5,5,7,2,2,12,3,1,4,2,3,2,3,11,8,7,4,17,1,9,25,1,1,4,2,2,4,1,2,7,1,1,1,3,1,2,6,16,1,2,1,1,3,12,
   2461        20,2,5,20,8,7,6,2,1,1,1,1,6,2,1,2,10,1,1,6,1,3,1,2,1,4,1,12,4,1,3,1,1,1,1,1,10,4,7,5,13,1,15,1,1,30,11,9,1,15,38,14,1,32,17,20,1,9,31,2,21,9,
   2462        4,49,22,2,1,13,1,11,45,35,43,55,12,19,83,1,3,2,3,13,2,1,7,3,18,3,13,8,1,8,18,5,3,7,25,24,9,24,40,3,17,24,2,1,6,2,3,16,15,6,7,3,12,1,9,7,3,3,
   2463        3,15,21,5,16,4,5,12,11,11,3,6,3,2,31,3,2,1,1,23,6,6,1,4,2,6,5,2,1,1,3,3,22,2,6,2,3,17,3,2,4,5,1,9,5,1,1,6,15,12,3,17,2,14,2,8,1,23,16,4,2,23,
   2464        8,15,23,20,12,25,19,47,11,21,65,46,4,3,1,5,6,1,2,5,26,2,1,1,3,11,1,1,1,2,1,2,3,1,1,10,2,3,1,1,1,3,6,3,2,2,6,6,9,2,2,2,6,2,5,10,2,4,1,2,1,2,2,
   2465        3,1,1,3,1,2,9,23,9,2,1,1,1,1,5,3,2,1,10,9,6,1,10,2,31,25,3,7,5,40,1,15,6,17,7,27,180,1,3,2,2,1,1,1,6,3,10,7,1,3,6,17,8,6,2,2,1,3,5,5,8,16,14,
   2466        15,1,1,4,1,2,1,1,1,3,2,7,5,6,2,5,10,1,4,2,9,1,1,11,6,1,44,1,3,7,9,5,1,3,1,1,10,7,1,10,4,2,7,21,15,7,2,5,1,8,3,4,1,3,1,6,1,4,2,1,4,10,8,1,4,5,
   2467        1,5,10,2,7,1,10,1,1,3,4,11,10,29,4,7,3,5,2,3,33,5,2,19,3,1,4,2,6,31,11,1,3,3,3,1,8,10,9,12,11,12,8,3,14,8,6,11,1,4,41,3,1,2,7,13,1,5,6,2,6,12,
   2468        12,22,5,9,4,8,9,9,34,6,24,1,1,20,9,9,3,4,1,7,2,2,2,6,2,28,5,3,6,1,4,6,7,4,2,1,4,2,13,6,4,4,3,1,8,8,3,2,1,5,1,2,2,3,1,11,11,7,3,6,10,8,6,16,16,
   2469        22,7,12,6,21,5,4,6,6,3,6,1,3,2,1,2,8,29,1,10,1,6,13,6,6,19,31,1,13,4,4,22,17,26,33,10,4,15,12,25,6,67,10,2,3,1,6,10,2,6,2,9,1,9,4,4,1,2,16,2,
   2470        5,9,2,3,8,1,8,3,9,4,8,6,4,8,11,3,2,1,1,3,26,1,7,5,1,11,1,5,3,5,2,13,6,39,5,1,5,2,11,6,10,5,1,15,5,3,6,19,21,22,2,4,1,6,1,8,1,4,8,2,4,2,2,9,2,
   2471        1,1,1,4,3,6,3,12,7,1,14,2,4,10,2,13,1,17,7,3,2,1,3,2,13,7,14,12,3,1,29,2,8,9,15,14,9,14,1,3,1,6,5,9,11,3,38,43,20,7,7,8,5,15,12,19,15,81,8,7,
   2472        1,5,73,13,37,28,8,8,1,15,18,20,165,28,1,6,11,8,4,14,7,15,1,3,3,6,4,1,7,14,1,1,11,30,1,5,1,4,14,1,4,2,7,52,2,6,29,3,1,9,1,21,3,5,1,26,3,11,14,
   2473        11,1,17,5,1,2,1,3,2,8,1,2,9,12,1,1,2,3,8,3,24,12,7,7,5,17,3,3,3,1,23,10,4,4,6,3,1,16,17,22,3,10,21,16,16,6,4,10,2,1,1,2,8,8,6,5,3,3,3,39,25,
   2474        15,1,1,16,6,7,25,15,6,6,12,1,22,13,1,4,9,5,12,2,9,1,12,28,8,3,5,10,22,60,1,2,40,4,61,63,4,1,13,12,1,4,31,12,1,14,89,5,16,6,29,14,2,5,49,18,18,
   2475        5,29,33,47,1,17,1,19,12,2,9,7,39,12,3,7,12,39,3,1,46,4,12,3,8,9,5,31,15,18,3,2,2,66,19,13,17,5,3,46,124,13,57,34,2,5,4,5,8,1,1,1,4,3,1,17,5,
   2476        3,5,3,1,8,5,6,3,27,3,26,7,12,7,2,17,3,7,18,78,16,4,36,1,2,1,6,2,1,39,17,7,4,13,4,4,4,1,10,4,2,4,6,3,10,1,19,1,26,2,4,33,2,73,47,7,3,8,2,4,15,
   2477        18,1,29,2,41,14,1,21,16,41,7,39,25,13,44,2,2,10,1,13,7,1,7,3,5,20,4,8,2,49,1,10,6,1,6,7,10,7,11,16,3,12,20,4,10,3,1,2,11,2,28,9,2,4,7,2,15,1,
   2478        27,1,28,17,4,5,10,7,3,24,10,11,6,26,3,2,7,2,2,49,16,10,16,15,4,5,27,61,30,14,38,22,2,7,5,1,3,12,23,24,17,17,3,3,2,4,1,6,2,7,5,1,1,5,1,1,9,4,
   2479        1,3,6,1,8,2,8,4,14,3,5,11,4,1,3,32,1,19,4,1,13,11,5,2,1,8,6,8,1,6,5,13,3,23,11,5,3,16,3,9,10,1,24,3,198,52,4,2,2,5,14,5,4,22,5,20,4,11,6,41,
   2480        1,5,2,2,11,5,2,28,35,8,22,3,18,3,10,7,5,3,4,1,5,3,8,9,3,6,2,16,22,4,5,5,3,3,18,23,2,6,23,5,27,8,1,33,2,12,43,16,5,2,3,6,1,20,4,2,9,7,1,11,2,
   2481        10,3,14,31,9,3,25,18,20,2,5,5,26,14,1,11,17,12,40,19,9,6,31,83,2,7,9,19,78,12,14,21,76,12,113,79,34,4,1,1,61,18,85,10,2,2,13,31,11,50,6,33,159,
   2482        179,6,6,7,4,4,2,4,2,5,8,7,20,32,22,1,3,10,6,7,28,5,10,9,2,77,19,13,2,5,1,4,4,7,4,13,3,9,31,17,3,26,2,6,6,5,4,1,7,11,3,4,2,1,6,2,20,4,1,9,2,6,
   2483        3,7,1,1,1,20,2,3,1,6,2,3,6,2,4,8,1,5,13,8,4,11,23,1,10,6,2,1,3,21,2,2,4,24,31,4,10,10,2,5,192,15,4,16,7,9,51,1,2,1,1,5,1,1,2,1,3,5,3,1,3,4,1,
   2484        3,1,3,3,9,8,1,2,2,2,4,4,18,12,92,2,10,4,3,14,5,25,16,42,4,14,4,2,21,5,126,30,31,2,1,5,13,3,22,5,6,6,20,12,1,14,12,87,3,19,1,8,2,9,9,3,3,23,2,
   2485        3,7,6,3,1,2,3,9,1,3,1,6,3,2,1,3,11,3,1,6,10,3,2,3,1,2,1,5,1,1,11,3,6,4,1,7,2,1,2,5,5,34,4,14,18,4,19,7,5,8,2,6,79,1,5,2,14,8,2,9,2,1,36,28,16,
   2486        4,1,1,1,2,12,6,42,39,16,23,7,15,15,3,2,12,7,21,64,6,9,28,8,12,3,3,41,59,24,51,55,57,294,9,9,2,6,2,15,1,2,13,38,90,9,9,9,3,11,7,1,1,1,5,6,3,2,
   2487        1,2,2,3,8,1,4,4,1,5,7,1,4,3,20,4,9,1,1,1,5,5,17,1,5,2,6,2,4,1,4,5,7,3,18,11,11,32,7,5,4,7,11,127,8,4,3,3,1,10,1,1,6,21,14,1,16,1,7,1,3,6,9,65,
   2488        51,4,3,13,3,10,1,1,12,9,21,110,3,19,24,1,1,10,62,4,1,29,42,78,28,20,18,82,6,3,15,6,84,58,253,15,155,264,15,21,9,14,7,58,40,39,
   2489    };
   2490    static ImWchar base_ranges[] = // not zero-terminated
   2491    {
   2492        0x0020, 0x00FF, // Basic Latin + Latin Supplement
   2493        0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana
   2494        0x31F0, 0x31FF, // Katakana Phonetic Extensions
   2495        0xFF00, 0xFFEF  // Half-width characters
   2496    };
   2497    static ImWchar full_ranges[IM_ARRAYSIZE(base_ranges) + IM_ARRAYSIZE(accumulative_offsets_from_0x4E00)*2 + 1] = { 0 };
   2498    if (!full_ranges[0])
   2499    {
   2500        memcpy(full_ranges, base_ranges, sizeof(base_ranges));
   2501        UnpackAccumulativeOffsetsIntoRanges(0x4E00, accumulative_offsets_from_0x4E00, IM_ARRAYSIZE(accumulative_offsets_from_0x4E00), full_ranges + IM_ARRAYSIZE(base_ranges));
   2502    }
   2503    return &full_ranges[0];
   2504}
   2505
   2506const ImWchar*  ImFontAtlas::GetGlyphRangesCyrillic()
   2507{
   2508    static const ImWchar ranges[] =
   2509    {
   2510        0x0020, 0x00FF, // Basic Latin + Latin Supplement
   2511        0x0400, 0x052F, // Cyrillic + Cyrillic Supplement
   2512        0x2DE0, 0x2DFF, // Cyrillic Extended-A
   2513        0xA640, 0xA69F, // Cyrillic Extended-B
   2514        0,
   2515    };
   2516    return &ranges[0];
   2517}
   2518
   2519const ImWchar*  ImFontAtlas::GetGlyphRangesThai()
   2520{
   2521    static const ImWchar ranges[] =
   2522    {
   2523        0x0020, 0x00FF, // Basic Latin
   2524        0x2010, 0x205E, // Punctuations
   2525        0x0E00, 0x0E7F, // Thai
   2526        0,
   2527    };
   2528    return &ranges[0];
   2529}
   2530
   2531const ImWchar*  ImFontAtlas::GetGlyphRangesVietnamese()
   2532{
   2533    static const ImWchar ranges[] =
   2534    {
   2535        0x0020, 0x00FF, // Basic Latin
   2536        0x0102, 0x0103,
   2537        0x0110, 0x0111,
   2538        0x0128, 0x0129,
   2539        0x0168, 0x0169,
   2540        0x01A0, 0x01A1,
   2541        0x01AF, 0x01B0,
   2542        0x1EA0, 0x1EF9,
   2543        0,
   2544    };
   2545    return &ranges[0];
   2546}
   2547
   2548//-----------------------------------------------------------------------------
   2549// [SECTION] ImFontGlyphRangesBuilder
   2550//-----------------------------------------------------------------------------
   2551
   2552void ImFontGlyphRangesBuilder::AddText(const char* text, const char* text_end)
   2553{
   2554    while (text_end ? (text < text_end) : *text)
   2555    {
   2556        unsigned int c = 0;
   2557        int c_len = ImTextCharFromUtf8(&c, text, text_end);
   2558        text += c_len;
   2559        if (c_len == 0)
   2560            break;
   2561        AddChar((ImWchar)c);
   2562    }
   2563}
   2564
   2565void ImFontGlyphRangesBuilder::AddRanges(const ImWchar* ranges)
   2566{
   2567    for (; ranges[0]; ranges += 2)
   2568        for (ImWchar c = ranges[0]; c <= ranges[1]; c++)
   2569            AddChar(c);
   2570}
   2571
   2572void ImFontGlyphRangesBuilder::BuildRanges(ImVector<ImWchar>* out_ranges)
   2573{
   2574    const int max_codepoint = IM_UNICODE_CODEPOINT_MAX;
   2575    for (int n = 0; n <= max_codepoint; n++)
   2576        if (GetBit(n))
   2577        {
   2578            out_ranges->push_back((ImWchar)n);
   2579            while (n < max_codepoint && GetBit(n + 1))
   2580                n++;
   2581            out_ranges->push_back((ImWchar)n);
   2582        }
   2583    out_ranges->push_back(0);
   2584}
   2585
   2586//-----------------------------------------------------------------------------
   2587// [SECTION] ImFont
   2588//-----------------------------------------------------------------------------
   2589
   2590ImFont::ImFont()
   2591{
   2592    FontSize = 0.0f;
   2593    FallbackAdvanceX = 0.0f;
   2594    FallbackChar = (ImWchar)'?';
   2595    EllipsisChar = (ImWchar)-1;
   2596    DisplayOffset = ImVec2(0.0f, 0.0f);
   2597    FallbackGlyph = NULL;
   2598    ContainerAtlas = NULL;
   2599    ConfigData = NULL;
   2600    ConfigDataCount = 0;
   2601    DirtyLookupTables = false;
   2602    Scale = 1.0f;
   2603    Ascent = Descent = 0.0f;
   2604    MetricsTotalSurface = 0;
   2605    memset(Used4kPagesMap, 0, sizeof(Used4kPagesMap));
   2606}
   2607
   2608ImFont::~ImFont()
   2609{
   2610    ClearOutputData();
   2611}
   2612
   2613void    ImFont::ClearOutputData()
   2614{
   2615    FontSize = 0.0f;
   2616    FallbackAdvanceX = 0.0f;
   2617    Glyphs.clear();
   2618    IndexAdvanceX.clear();
   2619    IndexLookup.clear();
   2620    FallbackGlyph = NULL;
   2621    ContainerAtlas = NULL;
   2622    DirtyLookupTables = true;
   2623    Ascent = Descent = 0.0f;
   2624    MetricsTotalSurface = 0;
   2625}
   2626
   2627void ImFont::BuildLookupTable()
   2628{
   2629    int max_codepoint = 0;
   2630    for (int i = 0; i != Glyphs.Size; i++)
   2631        max_codepoint = ImMax(max_codepoint, (int)Glyphs[i].Codepoint);
   2632
   2633    // Build lookup table
   2634    IM_ASSERT(Glyphs.Size < 0xFFFF); // -1 is reserved
   2635    IndexAdvanceX.clear();
   2636    IndexLookup.clear();
   2637    DirtyLookupTables = false;
   2638    memset(Used4kPagesMap, 0, sizeof(Used4kPagesMap));
   2639    GrowIndex(max_codepoint + 1);
   2640    for (int i = 0; i < Glyphs.Size; i++)
   2641    {
   2642        int codepoint = (int)Glyphs[i].Codepoint;
   2643        IndexAdvanceX[codepoint] = Glyphs[i].AdvanceX;
   2644        IndexLookup[codepoint] = (ImWchar)i;
   2645
   2646        // Mark 4K page as used
   2647        const int page_n = codepoint / 4096;
   2648        Used4kPagesMap[page_n >> 3] |= 1 << (page_n & 7);
   2649    }
   2650
   2651    // Create a glyph to handle TAB
   2652    // FIXME: Needs proper TAB handling but it needs to be contextualized (or we could arbitrary say that each string starts at "column 0" ?)
   2653    if (FindGlyph((ImWchar)' '))
   2654    {
   2655        if (Glyphs.back().Codepoint != '\t')   // So we can call this function multiple times (FIXME: Flaky)
   2656            Glyphs.resize(Glyphs.Size + 1);
   2657        ImFontGlyph& tab_glyph = Glyphs.back();
   2658        tab_glyph = *FindGlyph((ImWchar)' ');
   2659        tab_glyph.Codepoint = '\t';
   2660        tab_glyph.AdvanceX *= IM_TABSIZE;
   2661        IndexAdvanceX[(int)tab_glyph.Codepoint] = (float)tab_glyph.AdvanceX;
   2662        IndexLookup[(int)tab_glyph.Codepoint] = (ImWchar)(Glyphs.Size-1);
   2663    }
   2664
   2665    // Mark special glyphs as not visible (note that AddGlyph already mark as non-visible glyphs with zero-size polygons)
   2666    SetGlyphVisible((ImWchar)' ', false);
   2667    SetGlyphVisible((ImWchar)'\t', false);
   2668
   2669    // Setup fall-backs
   2670    FallbackGlyph = FindGlyphNoFallback(FallbackChar);
   2671    FallbackAdvanceX = FallbackGlyph ? FallbackGlyph->AdvanceX : 0.0f;
   2672    for (int i = 0; i < max_codepoint + 1; i++)
   2673        if (IndexAdvanceX[i] < 0.0f)
   2674            IndexAdvanceX[i] = FallbackAdvanceX;
   2675}
   2676
   2677// API is designed this way to avoid exposing the 4K page size
   2678// e.g. use with IsGlyphRangeUnused(0, 255)
   2679bool ImFont::IsGlyphRangeUnused(unsigned int c_begin, unsigned int c_last)
   2680{
   2681    unsigned int page_begin = (c_begin / 4096);
   2682    unsigned int page_last = (c_last / 4096);
   2683    for (unsigned int page_n = page_begin; page_n <= page_last; page_n++)
   2684        if ((page_n >> 3) < sizeof(Used4kPagesMap))
   2685            if (Used4kPagesMap[page_n >> 3] & (1 << (page_n & 7)))
   2686                return false;
   2687    return true;
   2688}
   2689
   2690void ImFont::SetGlyphVisible(ImWchar c, bool visible)
   2691{
   2692    if (ImFontGlyph* glyph = (ImFontGlyph*)(void*)FindGlyph((ImWchar)c))
   2693        glyph->Visible = visible ? 1 : 0;
   2694}
   2695
   2696void ImFont::SetFallbackChar(ImWchar c)
   2697{
   2698    FallbackChar = c;
   2699    BuildLookupTable();
   2700}
   2701
   2702void ImFont::GrowIndex(int new_size)
   2703{
   2704    IM_ASSERT(IndexAdvanceX.Size == IndexLookup.Size);
   2705    if (new_size <= IndexLookup.Size)
   2706        return;
   2707    IndexAdvanceX.resize(new_size, -1.0f);
   2708    IndexLookup.resize(new_size, (ImWchar)-1);
   2709}
   2710
   2711// x0/y0/x1/y1 are offset from the character upper-left layout position, in pixels. Therefore x0/y0 are often fairly close to zero.
   2712// Not to be mistaken with texture coordinates, which are held by u0/v0/u1/v1 in normalized format (0.0..1.0 on each texture axis).
   2713void ImFont::AddGlyph(ImWchar codepoint, float x0, float y0, float x1, float y1, float u0, float v0, float u1, float v1, float advance_x)
   2714{
   2715    Glyphs.resize(Glyphs.Size + 1);
   2716    ImFontGlyph& glyph = Glyphs.back();
   2717    glyph.Codepoint = (unsigned int)codepoint;
   2718    glyph.Visible = (x0 != x1) && (y0 != y1);
   2719    glyph.X0 = x0;
   2720    glyph.Y0 = y0;
   2721    glyph.X1 = x1;
   2722    glyph.Y1 = y1;
   2723    glyph.U0 = u0;
   2724    glyph.V0 = v0;
   2725    glyph.U1 = u1;
   2726    glyph.V1 = v1;
   2727    glyph.AdvanceX = advance_x + ConfigData->GlyphExtraSpacing.x;  // Bake spacing into AdvanceX
   2728
   2729    if (ConfigData->PixelSnapH)
   2730        glyph.AdvanceX = IM_ROUND(glyph.AdvanceX);
   2731
   2732    // Compute rough surface usage metrics (+1 to account for average padding, +0.99 to round)
   2733    DirtyLookupTables = true;
   2734    MetricsTotalSurface += (int)((glyph.U1 - glyph.U0) * ContainerAtlas->TexWidth + 1.99f) * (int)((glyph.V1 - glyph.V0) * ContainerAtlas->TexHeight + 1.99f);
   2735}
   2736
   2737void ImFont::AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst)
   2738{
   2739    IM_ASSERT(IndexLookup.Size > 0);    // Currently this can only be called AFTER the font has been built, aka after calling ImFontAtlas::GetTexDataAs*() function.
   2740    unsigned int index_size = (unsigned int)IndexLookup.Size;
   2741
   2742    if (dst < index_size && IndexLookup.Data[dst] == (ImWchar)-1 && !overwrite_dst) // 'dst' already exists
   2743        return;
   2744    if (src >= index_size && dst >= index_size) // both 'dst' and 'src' don't exist -> no-op
   2745        return;
   2746
   2747    GrowIndex(dst + 1);
   2748    IndexLookup[dst] = (src < index_size) ? IndexLookup.Data[src] : (ImWchar)-1;
   2749    IndexAdvanceX[dst] = (src < index_size) ? IndexAdvanceX.Data[src] : 1.0f;
   2750}
   2751
   2752const ImFontGlyph* ImFont::FindGlyph(ImWchar c) const
   2753{
   2754    if (c >= (size_t)IndexLookup.Size)
   2755        return FallbackGlyph;
   2756    const ImWchar i = IndexLookup.Data[c];
   2757    if (i == (ImWchar)-1)
   2758        return FallbackGlyph;
   2759    return &Glyphs.Data[i];
   2760}
   2761
   2762const ImFontGlyph* ImFont::FindGlyphNoFallback(ImWchar c) const
   2763{
   2764    if (c >= (size_t)IndexLookup.Size)
   2765        return NULL;
   2766    const ImWchar i = IndexLookup.Data[c];
   2767    if (i == (ImWchar)-1)
   2768        return NULL;
   2769    return &Glyphs.Data[i];
   2770}
   2771
   2772const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width) const
   2773{
   2774    // Simple word-wrapping for English, not full-featured. Please submit failing cases!
   2775    // FIXME: Much possible improvements (don't cut things like "word !", "word!!!" but cut within "word,,,,", more sensible support for punctuations, support for Unicode punctuations, etc.)
   2776
   2777    // For references, possible wrap point marked with ^
   2778    //  "aaa bbb, ccc,ddd. eee   fff. ggg!"
   2779    //      ^    ^    ^   ^   ^__    ^    ^
   2780
   2781    // List of hardcoded separators: .,;!?'"
   2782
   2783    // Skip extra blanks after a line returns (that includes not counting them in width computation)
   2784    // e.g. "Hello    world" --> "Hello" "World"
   2785
   2786    // Cut words that cannot possibly fit within one line.
   2787    // e.g.: "The tropical fish" with ~5 characters worth of width --> "The tr" "opical" "fish"
   2788
   2789    float line_width = 0.0f;
   2790    float word_width = 0.0f;
   2791    float blank_width = 0.0f;
   2792    wrap_width /= scale; // We work with unscaled widths to avoid scaling every characters
   2793
   2794    const char* word_end = text;
   2795    const char* prev_word_end = NULL;
   2796    bool inside_word = true;
   2797
   2798    const char* s = text;
   2799    while (s < text_end)
   2800    {
   2801        unsigned int c = (unsigned int)*s;
   2802        const char* next_s;
   2803        if (c < 0x80)
   2804            next_s = s + 1;
   2805        else
   2806            next_s = s + ImTextCharFromUtf8(&c, s, text_end);
   2807        if (c == 0)
   2808            break;
   2809
   2810        if (c < 32)
   2811        {
   2812            if (c == '\n')
   2813            {
   2814                line_width = word_width = blank_width = 0.0f;
   2815                inside_word = true;
   2816                s = next_s;
   2817                continue;
   2818            }
   2819            if (c == '\r')
   2820            {
   2821                s = next_s;
   2822                continue;
   2823            }
   2824        }
   2825
   2826        const float char_width = ((int)c < IndexAdvanceX.Size ? IndexAdvanceX.Data[c] : FallbackAdvanceX);
   2827        if (ImCharIsBlankW(c))
   2828        {
   2829            if (inside_word)
   2830            {
   2831                line_width += blank_width;
   2832                blank_width = 0.0f;
   2833                word_end = s;
   2834            }
   2835            blank_width += char_width;
   2836            inside_word = false;
   2837        }
   2838        else
   2839        {
   2840            word_width += char_width;
   2841            if (inside_word)
   2842            {
   2843                word_end = next_s;
   2844            }
   2845            else
   2846            {
   2847                prev_word_end = word_end;
   2848                line_width += word_width + blank_width;
   2849                word_width = blank_width = 0.0f;
   2850            }
   2851
   2852            // Allow wrapping after punctuation.
   2853            inside_word = !(c == '.' || c == ',' || c == ';' || c == '!' || c == '?' || c == '\"');
   2854        }
   2855
   2856        // We ignore blank width at the end of the line (they can be skipped)
   2857        if (line_width + word_width > wrap_width)
   2858        {
   2859            // Words that cannot possibly fit within an entire line will be cut anywhere.
   2860            if (word_width < wrap_width)
   2861                s = prev_word_end ? prev_word_end : word_end;
   2862            break;
   2863        }
   2864
   2865        s = next_s;
   2866    }
   2867
   2868    return s;
   2869}
   2870
   2871ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end, const char** remaining) const
   2872{
   2873    if (!text_end)
   2874        text_end = text_begin + strlen(text_begin); // FIXME-OPT: Need to avoid this.
   2875
   2876    const float line_height = size;
   2877    const float scale = size / FontSize;
   2878
   2879    ImVec2 text_size = ImVec2(0,0);
   2880    float line_width = 0.0f;
   2881
   2882    const bool word_wrap_enabled = (wrap_width > 0.0f);
   2883    const char* word_wrap_eol = NULL;
   2884
   2885    const char* s = text_begin;
   2886    while (s < text_end)
   2887    {
   2888        if (word_wrap_enabled)
   2889        {
   2890            // Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature.
   2891            if (!word_wrap_eol)
   2892            {
   2893                word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - line_width);
   2894                if (word_wrap_eol == s) // Wrap_width is too small to fit anything. Force displaying 1 character to minimize the height discontinuity.
   2895                    word_wrap_eol++;    // +1 may not be a character start point in UTF-8 but it's ok because we use s >= word_wrap_eol below
   2896            }
   2897
   2898            if (s >= word_wrap_eol)
   2899            {
   2900                if (text_size.x < line_width)
   2901                    text_size.x = line_width;
   2902                text_size.y += line_height;
   2903                line_width = 0.0f;
   2904                word_wrap_eol = NULL;
   2905
   2906                // Wrapping skips upcoming blanks
   2907                while (s < text_end)
   2908                {
   2909                    const char c = *s;
   2910                    if (ImCharIsBlankA(c)) { s++; } else if (c == '\n') { s++; break; } else { break; }
   2911                }
   2912                continue;
   2913            }
   2914        }
   2915
   2916        // Decode and advance source
   2917        const char* prev_s = s;
   2918        unsigned int c = (unsigned int)*s;
   2919        if (c < 0x80)
   2920        {
   2921            s += 1;
   2922        }
   2923        else
   2924        {
   2925            s += ImTextCharFromUtf8(&c, s, text_end);
   2926            if (c == 0) // Malformed UTF-8?
   2927                break;
   2928        }
   2929
   2930        if (c < 32)
   2931        {
   2932            if (c == '\n')
   2933            {
   2934                text_size.x = ImMax(text_size.x, line_width);
   2935                text_size.y += line_height;
   2936                line_width = 0.0f;
   2937                continue;
   2938            }
   2939            if (c == '\r')
   2940                continue;
   2941        }
   2942
   2943        const float char_width = ((int)c < IndexAdvanceX.Size ? IndexAdvanceX.Data[c] : FallbackAdvanceX) * scale;
   2944        if (line_width + char_width >= max_width)
   2945        {
   2946            s = prev_s;
   2947            break;
   2948        }
   2949
   2950        line_width += char_width;
   2951    }
   2952
   2953    if (text_size.x < line_width)
   2954        text_size.x = line_width;
   2955
   2956    if (line_width > 0 || text_size.y == 0.0f)
   2957        text_size.y += line_height;
   2958
   2959    if (remaining)
   2960        *remaining = s;
   2961
   2962    return text_size;
   2963}
   2964
   2965void ImFont::RenderChar(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col, ImWchar c) const
   2966{
   2967    const ImFontGlyph* glyph = FindGlyph(c);
   2968    if (!glyph || !glyph->Visible)
   2969        return;
   2970    float scale = (size >= 0.0f) ? (size / FontSize) : 1.0f;
   2971    pos.x = IM_FLOOR(pos.x + DisplayOffset.x);
   2972    pos.y = IM_FLOOR(pos.y + DisplayOffset.y);
   2973    draw_list->PrimReserve(6, 4);
   2974    draw_list->PrimRectUV(ImVec2(pos.x + glyph->X0 * scale, pos.y + glyph->Y0 * scale), ImVec2(pos.x + glyph->X1 * scale, pos.y + glyph->Y1 * scale), ImVec2(glyph->U0, glyph->V0), ImVec2(glyph->U1, glyph->V1), col);
   2975}
   2976
   2977void ImFont::RenderText(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col, const ImVec4& clip_rect, const char* text_begin, const char* text_end, float wrap_width, bool cpu_fine_clip) const
   2978{
   2979    if (!text_end)
   2980        text_end = text_begin + strlen(text_begin); // ImGui:: functions generally already provides a valid text_end, so this is merely to handle direct calls.
   2981
   2982    // Align to be pixel perfect
   2983    pos.x = IM_FLOOR(pos.x + DisplayOffset.x);
   2984    pos.y = IM_FLOOR(pos.y + DisplayOffset.y);
   2985    float x = pos.x;
   2986    float y = pos.y;
   2987    if (y > clip_rect.w)
   2988        return;
   2989
   2990    const float scale = size / FontSize;
   2991    const float line_height = FontSize * scale;
   2992    const bool word_wrap_enabled = (wrap_width > 0.0f);
   2993    const char* word_wrap_eol = NULL;
   2994
   2995    // Fast-forward to first visible line
   2996    const char* s = text_begin;
   2997    if (y + line_height < clip_rect.y && !word_wrap_enabled)
   2998        while (y + line_height < clip_rect.y && s < text_end)
   2999        {
   3000            s = (const char*)memchr(s, '\n', text_end - s);
   3001            s = s ? s + 1 : text_end;
   3002            y += line_height;
   3003        }
   3004
   3005    // For large text, scan for the last visible line in order to avoid over-reserving in the call to PrimReserve()
   3006    // Note that very large horizontal line will still be affected by the issue (e.g. a one megabyte string buffer without a newline will likely crash atm)
   3007    if (text_end - s > 10000 && !word_wrap_enabled)
   3008    {
   3009        const char* s_end = s;
   3010        float y_end = y;
   3011        while (y_end < clip_rect.w && s_end < text_end)
   3012        {
   3013            s_end = (const char*)memchr(s_end, '\n', text_end - s_end);
   3014            s_end = s_end ? s_end + 1 : text_end;
   3015            y_end += line_height;
   3016        }
   3017        text_end = s_end;
   3018    }
   3019    if (s == text_end)
   3020        return;
   3021
   3022    // Reserve vertices for remaining worse case (over-reserving is useful and easily amortized)
   3023    const int vtx_count_max = (int)(text_end - s) * 4;
   3024    const int idx_count_max = (int)(text_end - s) * 6;
   3025    const int idx_expected_size = draw_list->IdxBuffer.Size + idx_count_max;
   3026    draw_list->PrimReserve(idx_count_max, vtx_count_max);
   3027
   3028    ImDrawVert* vtx_write = draw_list->_VtxWritePtr;
   3029    ImDrawIdx* idx_write = draw_list->_IdxWritePtr;
   3030    unsigned int vtx_current_idx = draw_list->_VtxCurrentIdx;
   3031
   3032    while (s < text_end)
   3033    {
   3034        if (word_wrap_enabled)
   3035        {
   3036            // Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature.
   3037            if (!word_wrap_eol)
   3038            {
   3039                word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - (x - pos.x));
   3040                if (word_wrap_eol == s) // Wrap_width is too small to fit anything. Force displaying 1 character to minimize the height discontinuity.
   3041                    word_wrap_eol++;    // +1 may not be a character start point in UTF-8 but it's ok because we use s >= word_wrap_eol below
   3042            }
   3043
   3044            if (s >= word_wrap_eol)
   3045            {
   3046                x = pos.x;
   3047                y += line_height;
   3048                word_wrap_eol = NULL;
   3049
   3050                // Wrapping skips upcoming blanks
   3051                while (s < text_end)
   3052                {
   3053                    const char c = *s;
   3054                    if (ImCharIsBlankA(c)) { s++; } else if (c == '\n') { s++; break; } else { break; }
   3055                }
   3056                continue;
   3057            }
   3058        }
   3059
   3060        // Decode and advance source
   3061        unsigned int c = (unsigned int)*s;
   3062        if (c < 0x80)
   3063        {
   3064            s += 1;
   3065        }
   3066        else
   3067        {
   3068            s += ImTextCharFromUtf8(&c, s, text_end);
   3069            if (c == 0) // Malformed UTF-8?
   3070                break;
   3071        }
   3072
   3073        if (c < 32)
   3074        {
   3075            if (c == '\n')
   3076            {
   3077                x = pos.x;
   3078                y += line_height;
   3079                if (y > clip_rect.w)
   3080                    break; // break out of main loop
   3081                continue;
   3082            }
   3083            if (c == '\r')
   3084                continue;
   3085        }
   3086
   3087        const ImFontGlyph* glyph = FindGlyph((ImWchar)c);
   3088        if (glyph == NULL)
   3089            continue;
   3090
   3091        float char_width = glyph->AdvanceX * scale;
   3092        if (glyph->Visible)
   3093        {
   3094            // We don't do a second finer clipping test on the Y axis as we've already skipped anything before clip_rect.y and exit once we pass clip_rect.w
   3095            float x1 = x + glyph->X0 * scale;
   3096            float x2 = x + glyph->X1 * scale;
   3097            float y1 = y + glyph->Y0 * scale;
   3098            float y2 = y + glyph->Y1 * scale;
   3099            if (x1 <= clip_rect.z && x2 >= clip_rect.x)
   3100            {
   3101                // Render a character
   3102                float u1 = glyph->U0;
   3103                float v1 = glyph->V0;
   3104                float u2 = glyph->U1;
   3105                float v2 = glyph->V1;
   3106
   3107                // CPU side clipping used to fit text in their frame when the frame is too small. Only does clipping for axis aligned quads.
   3108                if (cpu_fine_clip)
   3109                {
   3110                    if (x1 < clip_rect.x)
   3111                    {
   3112                        u1 = u1 + (1.0f - (x2 - clip_rect.x) / (x2 - x1)) * (u2 - u1);
   3113                        x1 = clip_rect.x;
   3114                    }
   3115                    if (y1 < clip_rect.y)
   3116                    {
   3117                        v1 = v1 + (1.0f - (y2 - clip_rect.y) / (y2 - y1)) * (v2 - v1);
   3118                        y1 = clip_rect.y;
   3119                    }
   3120                    if (x2 > clip_rect.z)
   3121                    {
   3122                        u2 = u1 + ((clip_rect.z - x1) / (x2 - x1)) * (u2 - u1);
   3123                        x2 = clip_rect.z;
   3124                    }
   3125                    if (y2 > clip_rect.w)
   3126                    {
   3127                        v2 = v1 + ((clip_rect.w - y1) / (y2 - y1)) * (v2 - v1);
   3128                        y2 = clip_rect.w;
   3129                    }
   3130                    if (y1 >= y2)
   3131                    {
   3132                        x += char_width;
   3133                        continue;
   3134                    }
   3135                }
   3136
   3137                // We are NOT calling PrimRectUV() here because non-inlined causes too much overhead in a debug builds. Inlined here:
   3138                {
   3139                    idx_write[0] = (ImDrawIdx)(vtx_current_idx); idx_write[1] = (ImDrawIdx)(vtx_current_idx+1); idx_write[2] = (ImDrawIdx)(vtx_current_idx+2);
   3140                    idx_write[3] = (ImDrawIdx)(vtx_current_idx); idx_write[4] = (ImDrawIdx)(vtx_current_idx+2); idx_write[5] = (ImDrawIdx)(vtx_current_idx+3);
   3141                    vtx_write[0].pos.x = x1; vtx_write[0].pos.y = y1; vtx_write[0].col = col; vtx_write[0].uv.x = u1; vtx_write[0].uv.y = v1;
   3142                    vtx_write[1].pos.x = x2; vtx_write[1].pos.y = y1; vtx_write[1].col = col; vtx_write[1].uv.x = u2; vtx_write[1].uv.y = v1;
   3143                    vtx_write[2].pos.x = x2; vtx_write[2].pos.y = y2; vtx_write[2].col = col; vtx_write[2].uv.x = u2; vtx_write[2].uv.y = v2;
   3144                    vtx_write[3].pos.x = x1; vtx_write[3].pos.y = y2; vtx_write[3].col = col; vtx_write[3].uv.x = u1; vtx_write[3].uv.y = v2;
   3145                    vtx_write += 4;
   3146                    vtx_current_idx += 4;
   3147                    idx_write += 6;
   3148                }
   3149            }
   3150        }
   3151        x += char_width;
   3152    }
   3153
   3154    // Give back unused vertices (clipped ones, blanks) ~ this is essentially a PrimUnreserve() action.
   3155    draw_list->VtxBuffer.Size = (int)(vtx_write - draw_list->VtxBuffer.Data); // Same as calling shrink()
   3156    draw_list->IdxBuffer.Size = (int)(idx_write - draw_list->IdxBuffer.Data);
   3157    draw_list->CmdBuffer[draw_list->CmdBuffer.Size-1].ElemCount -= (idx_expected_size - draw_list->IdxBuffer.Size);
   3158    draw_list->_VtxWritePtr = vtx_write;
   3159    draw_list->_IdxWritePtr = idx_write;
   3160    draw_list->_VtxCurrentIdx = vtx_current_idx;
   3161}
   3162
   3163//-----------------------------------------------------------------------------
   3164// [SECTION] ImGui Internal Render Helpers
   3165//-----------------------------------------------------------------------------
   3166// Vaguely redesigned to stop accessing ImGui global state:
   3167// - RenderArrow()
   3168// - RenderBullet()
   3169// - RenderCheckMark()
   3170// - RenderMouseCursor()
   3171// - RenderArrowPointingAt()
   3172// - RenderRectFilledRangeH()
   3173//-----------------------------------------------------------------------------
   3174// Function in need of a redesign (legacy mess)
   3175// - RenderColorRectWithAlphaCheckerboard()
   3176//-----------------------------------------------------------------------------
   3177
   3178// Render an arrow aimed to be aligned with text (p_min is a position in the same space text would be positioned). To e.g. denote expanded/collapsed state
   3179void ImGui::RenderArrow(ImDrawList* draw_list, ImVec2 pos, ImU32 col, ImGuiDir dir, float scale)
   3180{
   3181    const float h = draw_list->_Data->FontSize * 1.00f;
   3182    float r = h * 0.40f * scale;
   3183    ImVec2 center = pos + ImVec2(h * 0.50f, h * 0.50f * scale);
   3184
   3185    ImVec2 a, b, c;
   3186    switch (dir)
   3187    {
   3188    case ImGuiDir_Up:
   3189    case ImGuiDir_Down:
   3190        if (dir == ImGuiDir_Up) r = -r;
   3191        a = ImVec2(+0.000f, +0.750f) * r;
   3192        b = ImVec2(-0.866f, -0.750f) * r;
   3193        c = ImVec2(+0.866f, -0.750f) * r;
   3194        break;
   3195    case ImGuiDir_Left:
   3196    case ImGuiDir_Right:
   3197        if (dir == ImGuiDir_Left) r = -r;
   3198        a = ImVec2(+0.750f, +0.000f) * r;
   3199        b = ImVec2(-0.750f, +0.866f) * r;
   3200        c = ImVec2(-0.750f, -0.866f) * r;
   3201        break;
   3202    case ImGuiDir_None:
   3203    case ImGuiDir_COUNT:
   3204        IM_ASSERT(0);
   3205        break;
   3206    }
   3207    draw_list->AddTriangleFilled(center + a, center + b, center + c, col);
   3208}
   3209
   3210void ImGui::RenderBullet(ImDrawList* draw_list, ImVec2 pos, ImU32 col)
   3211{
   3212    draw_list->AddCircleFilled(pos, draw_list->_Data->FontSize * 0.20f, col, 8);
   3213}
   3214
   3215void ImGui::RenderCheckMark(ImDrawList* draw_list, ImVec2 pos, ImU32 col, float sz)
   3216{
   3217    float thickness = ImMax(sz / 5.0f, 1.0f);
   3218    sz -= thickness * 0.5f;
   3219    pos += ImVec2(thickness * 0.25f, thickness * 0.25f);
   3220
   3221    float third = sz / 3.0f;
   3222    float bx = pos.x + third;
   3223    float by = pos.y + sz - third * 0.5f;
   3224    draw_list->PathLineTo(ImVec2(bx - third, by - third));
   3225    draw_list->PathLineTo(ImVec2(bx, by));
   3226    draw_list->PathLineTo(ImVec2(bx + third * 2.0f, by - third * 2.0f));
   3227    draw_list->PathStroke(col, false, thickness);
   3228}
   3229
   3230void ImGui::RenderMouseCursor(ImDrawList* draw_list, ImVec2 pos, float scale, ImGuiMouseCursor mouse_cursor, ImU32 col_fill, ImU32 col_border, ImU32 col_shadow)
   3231{
   3232    if (mouse_cursor == ImGuiMouseCursor_None)
   3233        return;
   3234    IM_ASSERT(mouse_cursor > ImGuiMouseCursor_None && mouse_cursor < ImGuiMouseCursor_COUNT);
   3235
   3236    ImFontAtlas* font_atlas = draw_list->_Data->Font->ContainerAtlas;
   3237    ImVec2 offset, size, uv[4];
   3238    if (font_atlas->GetMouseCursorTexData(mouse_cursor, &offset, &size, &uv[0], &uv[2]))
   3239    {
   3240        pos -= offset;
   3241        const ImTextureID tex_id = font_atlas->TexID;
   3242        draw_list->PushTextureID(tex_id);
   3243        draw_list->AddImage(tex_id, pos + ImVec2(1,0)*scale, pos + ImVec2(1,0)*scale + size*scale, uv[2], uv[3], col_shadow);
   3244        draw_list->AddImage(tex_id, pos + ImVec2(2,0)*scale, pos + ImVec2(2,0)*scale + size*scale, uv[2], uv[3], col_shadow);
   3245        draw_list->AddImage(tex_id, pos,                     pos + size*scale,                     uv[2], uv[3], col_border);
   3246        draw_list->AddImage(tex_id, pos,                     pos + size*scale,                     uv[0], uv[1], col_fill);
   3247        draw_list->PopTextureID();
   3248    }
   3249}
   3250
   3251// Render an arrow. 'pos' is position of the arrow tip. half_sz.x is length from base to tip. half_sz.y is length on each side.
   3252void ImGui::RenderArrowPointingAt(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, ImGuiDir direction, ImU32 col)
   3253{
   3254    switch (direction)
   3255    {
   3256    case ImGuiDir_Left:  draw_list->AddTriangleFilled(ImVec2(pos.x + half_sz.x, pos.y - half_sz.y), ImVec2(pos.x + half_sz.x, pos.y + half_sz.y), pos, col); return;
   3257    case ImGuiDir_Right: draw_list->AddTriangleFilled(ImVec2(pos.x - half_sz.x, pos.y + half_sz.y), ImVec2(pos.x - half_sz.x, pos.y - half_sz.y), pos, col); return;
   3258    case ImGuiDir_Up:    draw_list->AddTriangleFilled(ImVec2(pos.x + half_sz.x, pos.y + half_sz.y), ImVec2(pos.x - half_sz.x, pos.y + half_sz.y), pos, col); return;
   3259    case ImGuiDir_Down:  draw_list->AddTriangleFilled(ImVec2(pos.x - half_sz.x, pos.y - half_sz.y), ImVec2(pos.x + half_sz.x, pos.y - half_sz.y), pos, col); return;
   3260    case ImGuiDir_None: case ImGuiDir_COUNT: break; // Fix warnings
   3261    }
   3262}
   3263
   3264static inline float ImAcos01(float x)
   3265{
   3266    if (x <= 0.0f) return IM_PI * 0.5f;
   3267    if (x >= 1.0f) return 0.0f;
   3268    return ImAcos(x);
   3269    //return (-0.69813170079773212f * x * x - 0.87266462599716477f) * x + 1.5707963267948966f; // Cheap approximation, may be enough for what we do.
   3270}
   3271
   3272// FIXME: Cleanup and move code to ImDrawList.
   3273void ImGui::RenderRectFilledRangeH(ImDrawList* draw_list, const ImRect& rect, ImU32 col, float x_start_norm, float x_end_norm, float rounding)
   3274{
   3275    if (x_end_norm == x_start_norm)
   3276        return;
   3277    if (x_start_norm > x_end_norm)
   3278        ImSwap(x_start_norm, x_end_norm);
   3279
   3280    ImVec2 p0 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_start_norm), rect.Min.y);
   3281    ImVec2 p1 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_end_norm), rect.Max.y);
   3282    if (rounding == 0.0f)
   3283    {
   3284        draw_list->AddRectFilled(p0, p1, col, 0.0f);
   3285        return;
   3286    }
   3287
   3288    rounding = ImClamp(ImMin((rect.Max.x - rect.Min.x) * 0.5f, (rect.Max.y - rect.Min.y) * 0.5f) - 1.0f, 0.0f, rounding);
   3289    const float inv_rounding = 1.0f / rounding;
   3290    const float arc0_b = ImAcos01(1.0f - (p0.x - rect.Min.x) * inv_rounding);
   3291    const float arc0_e = ImAcos01(1.0f - (p1.x - rect.Min.x) * inv_rounding);
   3292    const float half_pi = IM_PI * 0.5f; // We will == compare to this because we know this is the exact value ImAcos01 can return.
   3293    const float x0 = ImMax(p0.x, rect.Min.x + rounding);
   3294    if (arc0_b == arc0_e)
   3295    {
   3296        draw_list->PathLineTo(ImVec2(x0, p1.y));
   3297        draw_list->PathLineTo(ImVec2(x0, p0.y));
   3298    }
   3299    else if (arc0_b == 0.0f && arc0_e == half_pi)
   3300    {
   3301        draw_list->PathArcToFast(ImVec2(x0, p1.y - rounding), rounding, 3, 6); // BL
   3302        draw_list->PathArcToFast(ImVec2(x0, p0.y + rounding), rounding, 6, 9); // TR
   3303    }
   3304    else
   3305    {
   3306        draw_list->PathArcTo(ImVec2(x0, p1.y - rounding), rounding, IM_PI - arc0_e, IM_PI - arc0_b, 3); // BL
   3307        draw_list->PathArcTo(ImVec2(x0, p0.y + rounding), rounding, IM_PI + arc0_b, IM_PI + arc0_e, 3); // TR
   3308    }
   3309    if (p1.x > rect.Min.x + rounding)
   3310    {
   3311        const float arc1_b = ImAcos01(1.0f - (rect.Max.x - p1.x) * inv_rounding);
   3312        const float arc1_e = ImAcos01(1.0f - (rect.Max.x - p0.x) * inv_rounding);
   3313        const float x1 = ImMin(p1.x, rect.Max.x - rounding);
   3314        if (arc1_b == arc1_e)
   3315        {
   3316            draw_list->PathLineTo(ImVec2(x1, p0.y));
   3317            draw_list->PathLineTo(ImVec2(x1, p1.y));
   3318        }
   3319        else if (arc1_b == 0.0f && arc1_e == half_pi)
   3320        {
   3321            draw_list->PathArcToFast(ImVec2(x1, p0.y + rounding), rounding, 9, 12); // TR
   3322            draw_list->PathArcToFast(ImVec2(x1, p1.y - rounding), rounding, 0, 3);  // BR
   3323        }
   3324        else
   3325        {
   3326            draw_list->PathArcTo(ImVec2(x1, p0.y + rounding), rounding, -arc1_e, -arc1_b, 3); // TR
   3327            draw_list->PathArcTo(ImVec2(x1, p1.y - rounding), rounding, +arc1_b, +arc1_e, 3); // BR
   3328        }
   3329    }
   3330    draw_list->PathFillConvex(col);
   3331}
   3332
   3333// Helper for ColorPicker4()
   3334// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.
   3335// Spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding alltogether.
   3336// FIXME: uses ImGui::GetColorU32
   3337void ImGui::RenderColorRectWithAlphaCheckerboard(ImDrawList* draw_list, ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, int rounding_corners_flags)
   3338{
   3339    if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)
   3340    {
   3341        ImU32 col_bg1 = ImGui::GetColorU32(ImAlphaBlendColors(IM_COL32(204, 204, 204, 255), col));
   3342        ImU32 col_bg2 = ImGui::GetColorU32(ImAlphaBlendColors(IM_COL32(128, 128, 128, 255), col));
   3343        draw_list->AddRectFilled(p_min, p_max, col_bg1, rounding, rounding_corners_flags);
   3344
   3345        int yi = 0;
   3346        for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)
   3347        {
   3348            float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);
   3349            if (y2 <= y1)
   3350                continue;
   3351            for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)
   3352            {
   3353                float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);
   3354                if (x2 <= x1)
   3355                    continue;
   3356                int rounding_corners_flags_cell = 0;
   3357                if (y1 <= p_min.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_TopRight; }
   3358                if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImDrawCornerFlags_BotRight; }
   3359                rounding_corners_flags_cell &= rounding_corners_flags;
   3360                draw_list->AddRectFilled(ImVec2(x1, y1), ImVec2(x2, y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
   3361            }
   3362        }
   3363    }
   3364    else
   3365    {
   3366        draw_list->AddRectFilled(p_min, p_max, col, rounding, rounding_corners_flags);
   3367    }
   3368}
   3369
   3370//-----------------------------------------------------------------------------
   3371// [SECTION] Decompression code
   3372//-----------------------------------------------------------------------------
   3373// Compressed with stb_compress() then converted to a C array and encoded as base85.
   3374// Use the program in misc/fonts/binary_to_compressed_c.cpp to create the array from a TTF file.
   3375// The purpose of encoding as base85 instead of "0x00,0x01,..." style is only save on _source code_ size.
   3376// Decompression from stb.h (public domain) by Sean Barrett https://github.com/nothings/stb/blob/master/stb.h
   3377//-----------------------------------------------------------------------------
   3378
   3379static unsigned int stb_decompress_length(const unsigned char *input)
   3380{
   3381    return (input[8] << 24) + (input[9] << 16) + (input[10] << 8) + input[11];
   3382}
   3383
   3384static unsigned char *stb__barrier_out_e, *stb__barrier_out_b;
   3385static const unsigned char *stb__barrier_in_b;
   3386static unsigned char *stb__dout;
   3387static void stb__match(const unsigned char *data, unsigned int length)
   3388{
   3389    // INVERSE of memmove... write each byte before copying the next...
   3390    IM_ASSERT(stb__dout + length <= stb__barrier_out_e);
   3391    if (stb__dout + length > stb__barrier_out_e) { stb__dout += length; return; }
   3392    if (data < stb__barrier_out_b) { stb__dout = stb__barrier_out_e+1; return; }
   3393    while (length--) *stb__dout++ = *data++;
   3394}
   3395
   3396static void stb__lit(const unsigned char *data, unsigned int length)
   3397{
   3398    IM_ASSERT(stb__dout + length <= stb__barrier_out_e);
   3399    if (stb__dout + length > stb__barrier_out_e) { stb__dout += length; return; }
   3400    if (data < stb__barrier_in_b) { stb__dout = stb__barrier_out_e+1; return; }
   3401    memcpy(stb__dout, data, length);
   3402    stb__dout += length;
   3403}
   3404
   3405#define stb__in2(x)   ((i[x] << 8) + i[(x)+1])
   3406#define stb__in3(x)   ((i[x] << 16) + stb__in2((x)+1))
   3407#define stb__in4(x)   ((i[x] << 24) + stb__in3((x)+1))
   3408
   3409static const unsigned char *stb_decompress_token(const unsigned char *i)
   3410{
   3411    if (*i >= 0x20) { // use fewer if's for cases that expand small
   3412        if (*i >= 0x80)       stb__match(stb__dout-i[1]-1, i[0] - 0x80 + 1), i += 2;
   3413        else if (*i >= 0x40)  stb__match(stb__dout-(stb__in2(0) - 0x4000 + 1), i[2]+1), i += 3;
   3414        else /* *i >= 0x20 */ stb__lit(i+1, i[0] - 0x20 + 1), i += 1 + (i[0] - 0x20 + 1);
   3415    } else { // more ifs for cases that expand large, since overhead is amortized
   3416        if (*i >= 0x18)       stb__match(stb__dout-(stb__in3(0) - 0x180000 + 1), i[3]+1), i += 4;
   3417        else if (*i >= 0x10)  stb__match(stb__dout-(stb__in3(0) - 0x100000 + 1), stb__in2(3)+1), i += 5;
   3418        else if (*i >= 0x08)  stb__lit(i+2, stb__in2(0) - 0x0800 + 1), i += 2 + (stb__in2(0) - 0x0800 + 1);
   3419        else if (*i == 0x07)  stb__lit(i+3, stb__in2(1) + 1), i += 3 + (stb__in2(1) + 1);
   3420        else if (*i == 0x06)  stb__match(stb__dout-(stb__in3(1)+1), i[4]+1), i += 5;
   3421        else if (*i == 0x04)  stb__match(stb__dout-(stb__in3(1)+1), stb__in2(4)+1), i += 6;
   3422    }
   3423    return i;
   3424}
   3425
   3426static unsigned int stb_adler32(unsigned int adler32, unsigned char *buffer, unsigned int buflen)
   3427{
   3428    const unsigned long ADLER_MOD = 65521;
   3429    unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16;
   3430    unsigned long blocklen = buflen % 5552;
   3431
   3432    unsigned long i;
   3433    while (buflen) {
   3434        for (i=0; i + 7 < blocklen; i += 8) {
   3435            s1 += buffer[0], s2 += s1;
   3436            s1 += buffer[1], s2 += s1;
   3437            s1 += buffer[2], s2 += s1;
   3438            s1 += buffer[3], s2 += s1;
   3439            s1 += buffer[4], s2 += s1;
   3440            s1 += buffer[5], s2 += s1;
   3441            s1 += buffer[6], s2 += s1;
   3442            s1 += buffer[7], s2 += s1;
   3443
   3444            buffer += 8;
   3445        }
   3446
   3447        for (; i < blocklen; ++i)
   3448            s1 += *buffer++, s2 += s1;
   3449
   3450        s1 %= ADLER_MOD, s2 %= ADLER_MOD;
   3451        buflen -= blocklen;
   3452        blocklen = 5552;
   3453    }
   3454    return (unsigned int)(s2 << 16) + (unsigned int)s1;
   3455}
   3456
   3457static unsigned int stb_decompress(unsigned char *output, const unsigned char *i, unsigned int /*length*/)
   3458{
   3459    if (stb__in4(0) != 0x57bC0000) return 0;
   3460    if (stb__in4(4) != 0)          return 0; // error! stream is > 4GB
   3461    const unsigned int olen = stb_decompress_length(i);
   3462    stb__barrier_in_b = i;
   3463    stb__barrier_out_e = output + olen;
   3464    stb__barrier_out_b = output;
   3465    i += 16;
   3466
   3467    stb__dout = output;
   3468    for (;;) {
   3469        const unsigned char *old_i = i;
   3470        i = stb_decompress_token(i);
   3471        if (i == old_i) {
   3472            if (*i == 0x05 && i[1] == 0xfa) {
   3473                IM_ASSERT(stb__dout == output + olen);
   3474                if (stb__dout != output + olen) return 0;
   3475                if (stb_adler32(1, output, olen) != (unsigned int) stb__in4(2))
   3476                    return 0;
   3477                return olen;
   3478            } else {
   3479                IM_ASSERT(0); /* NOTREACHED */
   3480                return 0;
   3481            }
   3482        }
   3483        IM_ASSERT(stb__dout <= output + olen);
   3484        if (stb__dout > output + olen)
   3485            return 0;
   3486    }
   3487}
   3488
   3489//-----------------------------------------------------------------------------
   3490// [SECTION] Default font data (ProggyClean.ttf)
   3491//-----------------------------------------------------------------------------
   3492// ProggyClean.ttf
   3493// Copyright (c) 2004, 2005 Tristan Grimmer
   3494// MIT license (see License.txt in http://www.upperbounds.net/download/ProggyClean.ttf.zip)
   3495// Download and more information at http://upperbounds.net
   3496//-----------------------------------------------------------------------------
   3497// File: 'ProggyClean.ttf' (41208 bytes)
   3498// Exported using misc/fonts/binary_to_compressed_c.cpp (with compression + base85 string encoding).
   3499// The purpose of encoding as base85 instead of "0x00,0x01,..." style is only save on _source code_ size.
   3500//-----------------------------------------------------------------------------
   3501static const char proggy_clean_ttf_compressed_data_base85[11980+1] =
   3502    "7])#######hV0qs'/###[),##/l:$#Q6>##5[n42>c-TH`->>#/e>11NNV=Bv(*:.F?uu#(gRU.o0XGH`$vhLG1hxt9?W`#,5LsCp#-i>.r$<$6pD>Lb';9Crc6tgXmKVeU2cD4Eo3R/"
   3503    "2*>]b(MC;$jPfY.;h^`IWM9<Lh2TlS+f-s$o6Q<BWH`YiU.xfLq$N;$0iR/GX:U(jcW2p/W*q?-qmnUCI;jHSAiFWM.R*kU@C=GH?a9wp8f$e.-4^Qg1)Q-GL(lf(r/7GrRgwV%MS=C#"
   3504    "`8ND>Qo#t'X#(v#Y9w0#1D$CIf;W'#pWUPXOuxXuU(H9M(1<q-UE31#^-V'8IRUo7Qf./L>=Ke$$'5F%)]0^#0X@U.a<r:QLtFsLcL6##lOj)#.Y5<-R&KgLwqJfLgN&;Q?gI^#DY2uL"
   3505    "i@^rMl9t=cWq6##weg>$FBjVQTSDgEKnIS7EM9>ZY9w0#L;>>#Mx&4Mvt//L[MkA#W@lK.N'[0#7RL_&#w+F%HtG9M#XL`N&.,GM4Pg;-<nLENhvx>-VsM.M0rJfLH2eTM`*oJMHRC`N"
   3506    "kfimM2J,W-jXS:)r0wK#@Fge$U>`w'N7G#$#fB#$E^$#:9:hk+eOe--6x)F7*E%?76%^GMHePW-Z5l'&GiF#$956:rS?dA#fiK:)Yr+`&#0j@'DbG&#^$PG.Ll+DNa<XCMKEV*N)LN/N"
   3507    "*b=%Q6pia-Xg8I$<MR&,VdJe$<(7G;Ckl'&hF;;$<_=X(b.RS%%)###MPBuuE1V:v&cX&#2m#(&cV]`k9OhLMbn%s$G2,B$BfD3X*sp5#l,$R#]x_X1xKX%b5U*[r5iMfUo9U`N99hG)"
   3508    "tm+/Us9pG)XPu`<0s-)WTt(gCRxIg(%6sfh=ktMKn3j)<6<b5Sk_/0(^]AaN#(p/L>&VZ>1i%h1S9u5o@YaaW$e+b<TWFn/Z:Oh(Cx2$lNEoN^e)#CFY@@I;BOQ*sRwZtZxRcU7uW6CX"
   3509    "ow0i(?$Q[cjOd[P4d)]>ROPOpxTO7Stwi1::iB1q)C_=dV26J;2,]7op$]uQr@_V7$q^%lQwtuHY]=DX,n3L#0PHDO4f9>dC@O>HBuKPpP*E,N+b3L#lpR/MrTEH.IAQk.a>D[.e;mc."
   3510    "x]Ip.PH^'/aqUO/$1WxLoW0[iLA<QT;5HKD+@qQ'NQ(3_PLhE48R.qAPSwQ0/WK?Z,[x?-J;jQTWA0X@KJ(_Y8N-:/M74:/-ZpKrUss?d#dZq]DAbkU*JqkL+nwX@@47`5>w=4h(9.`G"
   3511    "CRUxHPeR`5Mjol(dUWxZa(>STrPkrJiWx`5U7F#.g*jrohGg`cg:lSTvEY/EV_7H4Q9[Z%cnv;JQYZ5q.l7Zeas:HOIZOB?G<Nald$qs]@]L<J7bR*>gv:[7MI2k).'2($5FNP&EQ(,)"
   3512    "U]W]+fh18.vsai00);D3@4ku5P?DP8aJt+;qUM]=+b'8@;mViBKx0DE[-auGl8:PJ&Dj+M6OC]O^((##]`0i)drT;-7X`=-H3[igUnPG-NZlo.#k@h#=Ork$m>a>$-?Tm$UV(?#P6YY#"
   3513    "'/###xe7q.73rI3*pP/$1>s9)W,JrM7SN]'/4C#v$U`0#V.[0>xQsH$fEmPMgY2u7Kh(G%siIfLSoS+MK2eTM$=5,M8p`A.;_R%#u[K#$x4AG8.kK/HSB==-'Ie/QTtG?-.*^N-4B/ZM"
   3514    "_3YlQC7(p7q)&](`6_c)$/*JL(L-^(]$wIM`dPtOdGA,U3:w2M-0<q-]L_?^)1vw'.,MRsqVr.L;aN&#/EgJ)PBc[-f>+WomX2u7lqM2iEumMTcsF?-aT=Z-97UEnXglEn1K-bnEO`gu"
   3515    "Ft(c%=;Am_Qs@jLooI&NX;]0#j4#F14;gl8-GQpgwhrq8'=l_f-b49'UOqkLu7-##oDY2L(te+Mch&gLYtJ,MEtJfLh'x'M=$CS-ZZ%P]8bZ>#S?YY#%Q&q'3^Fw&?D)UDNrocM3A76/"
   3516    "/oL?#h7gl85[qW/NDOk%16ij;+:1a'iNIdb-ou8.P*w,v5#EI$TWS>Pot-R*H'-SEpA:g)f+O$%%`kA#G=8RMmG1&O`>to8bC]T&$,n.LoO>29sp3dt-52U%VM#q7'DHpg+#Z9%H[K<L"
   3517    "%a2E-grWVM3@2=-k22tL]4$##6We'8UJCKE[d_=%wI;'6X-GsLX4j^SgJ$##R*w,vP3wK#iiW&#*h^D&R?jp7+/u&#(AP##XU8c$fSYW-J95_-Dp[g9wcO&#M-h1OcJlc-*vpw0xUX&#"
   3518    "OQFKNX@QI'IoPp7nb,QU//MQ&ZDkKP)X<WSVL(68uVl&#c'[0#(s1X&xm$Y%B7*K:eDA323j998GXbA#pwMs-jgD$9QISB-A_(aN4xoFM^@C58D0+Q+q3n0#3U1InDjF682-SjMXJK)("
   3519    "h$hxua_K]ul92%'BOU&#BRRh-slg8KDlr:%L71Ka:.A;%YULjDPmL<LYs8i#XwJOYaKPKc1h:'9Ke,g)b),78=I39B;xiY$bgGw-&.Zi9InXDuYa%G*f2Bq7mn9^#p1vv%#(Wi-;/Z5h"
   3520    "o;#2:;%d&#x9v68C5g?ntX0X)pT`;%pB3q7mgGN)3%(P8nTd5L7GeA-GL@+%J3u2:(Yf>et`e;)f#Km8&+DC$I46>#Kr]]u-[=99tts1.qb#q72g1WJO81q+eN'03'eM>&1XxY-caEnO"
   3521    "j%2n8)),?ILR5^.Ibn<-X-Mq7[a82Lq:F&#ce+S9wsCK*x`569E8ew'He]h:sI[2LM$[guka3ZRd6:t%IG:;$%YiJ:Nq=?eAw;/:nnDq0(CYcMpG)qLN4$##&J<j$UpK<Q4a1]MupW^-"
   3522    "sj_$%[HK%'F####QRZJ::Y3EGl4'@%FkiAOg#p[##O`gukTfBHagL<LHw%q&OV0##F=6/:chIm0@eCP8X]:kFI%hl8hgO@RcBhS-@Qb$%+m=hPDLg*%K8ln(wcf3/'DW-$.lR?n[nCH-"
   3523    "eXOONTJlh:.RYF%3'p6sq:UIMA945&^HFS87@$EP2iG<-lCO$%c`uKGD3rC$x0BL8aFn--`ke%#HMP'vh1/R&O_J9'um,.<tx[@%wsJk&bUT2`0uMv7gg#qp/ij.L56'hl;.s5CUrxjO"
   3524    "M7-##.l+Au'A&O:-T72L]P`&=;ctp'XScX*rU.>-XTt,%OVU4)S1+R-#dg0/Nn?Ku1^0f$B*P:Rowwm-`0PKjYDDM'3]d39VZHEl4,.j']Pk-M.h^&:0FACm$maq-&sgw0t7/6(^xtk%"
   3525    "LuH88Fj-ekm>GA#_>568x6(OFRl-IZp`&b,_P'$M<Jnq79VsJW/mWS*PUiq76;]/NM_>hLbxfc$mj`,O;&%W2m`Zh:/)Uetw:aJ%]K9h:TcF]u_-Sj9,VK3M.*'&0D[Ca]J9gp8,kAW]"
   3526    "%(?A%R$f<->Zts'^kn=-^@c4%-pY6qI%J%1IGxfLU9CP8cbPlXv);C=b),<2mOvP8up,UVf3839acAWAW-W?#ao/^#%KYo8fRULNd2.>%m]UK:n%r$'sw]J;5pAoO_#2mO3n,'=H5(et"
   3527    "Hg*`+RLgv>=4U8guD$I%D:W>-r5V*%j*W:Kvej.Lp$<M-SGZ':+Q_k+uvOSLiEo(<aD/K<CCc`'Lx>'?;++O'>()jLR-^u68PHm8ZFWe+ej8h:9r6L*0//c&iH&R8pRbA#Kjm%upV1g:"
   3528    "a_#Ur7FuA#(tRh#.Y5K+@?3<-8m0$PEn;J:rh6?I6uG<-`wMU'ircp0LaE_OtlMb&1#6T.#FDKu#1Lw%u%+GM+X'e?YLfjM[VO0MbuFp7;>Q&#WIo)0@F%q7c#4XAXN-U&VB<HFF*qL("
   3529    "$/V,;(kXZejWO`<[5?\?ewY(*9=%wDc;,u<'9t3W-(H1th3+G]ucQ]kLs7df($/*JL]@*t7Bu_G3_7mp7<iaQjO@.kLg;x3B0lqp7Hf,^Ze7-##@/c58Mo(3;knp0%)A7?-W+eI'o8)b<"
   3530    "nKnw'Ho8C=Y>pqB>0ie&jhZ[?iLR@@_AvA-iQC(=ksRZRVp7`.=+NpBC%rh&3]R:8XDmE5^V8O(x<<aG/1N$#FX$0V5Y6x'aErI3I$7x%E`v<-BY,)%-?Psf*l?%C3.mM(=/M0:JxG'?"
   3531    "7WhH%o'a<-80g0NBxoO(GH<dM]n.+%q@jH?f.UsJ2Ggs&4<-e47&Kl+f//9@`b+?.TeN_&B8Ss?v;^Trk;f#YvJkl&w$]>-+k?'(<S:68tq*WoDfZu';mM?8X[ma8W%*`-=;D.(nc7/;"
   3532    ")g:T1=^J$&BRV(-lTmNB6xqB[@0*o.erM*<SWF]u2=st-*(6v>^](H.aREZSi,#1:[IXaZFOm<-ui#qUq2$##Ri;u75OK#(RtaW-K-F`S+cF]uN`-KMQ%rP/Xri.LRcB##=YL3BgM/3M"
   3533    "D?@f&1'BW-)Ju<L25gl8uhVm1hL$##*8###'A3/LkKW+(^rWX?5W_8g)a(m&K8P>#bmmWCMkk&#TR`C,5d>g)F;t,4:@_l8G/5h4vUd%&%950:VXD'QdWoY-F$BtUwmfe$YqL'8(PWX("
   3534    "P?^@Po3$##`MSs?DWBZ/S>+4%>fX,VWv/w'KD`LP5IbH;rTV>n3cEK8U#bX]l-/V+^lj3;vlMb&[5YQ8#pekX9JP3XUC72L,,?+Ni&co7ApnO*5NK,((W-i:$,kp'UDAO(G0Sq7MVjJs"
   3535    "bIu)'Z,*[>br5fX^:FPAWr-m2KgL<LUN098kTF&#lvo58=/vjDo;.;)Ka*hLR#/k=rKbxuV`>Q_nN6'8uTG&#1T5g)uLv:873UpTLgH+#FgpH'_o1780Ph8KmxQJ8#H72L4@768@Tm&Q"
   3536    "h4CB/5OvmA&,Q&QbUoi$a_%3M01H)4x7I^&KQVgtFnV+;[Pc>[m4k//,]1?#`VY[Jr*3&&slRfLiVZJ:]?=K3Sw=[$=uRB?3xk48@aeg<Z'<$#4H)6,>e0jT6'N#(q%.O=?2S]u*(m<-"
   3537    "V8J'(1)G][68hW$5'q[GC&5j`TE?m'esFGNRM)j,ffZ?-qx8;->g4t*:CIP/[Qap7/9'#(1sao7w-.qNUdkJ)tCF&#B^;xGvn2r9FEPFFFcL@.iFNkTve$m%#QvQS8U@)2Z+3K:AKM5i"
   3538    "sZ88+dKQ)W6>J%CL<KE>`.d*(B`-n8D9oK<Up]c$X$(,)M8Zt7/[rdkqTgl-0cuGMv'?>-XV1q['-5k'cAZ69e;D_?$ZPP&s^+7])$*$#@QYi9,5P&#9r+$%CE=68>K8r0=dSC%%(@p7"
   3539    ".m7jilQ02'0-VWAg<a/''3u.=4L$Y)6k/K:_[3=&jvL<L0C/2'v:^;-DIBW,B4E68:kZ;%?8(Q8BH=kO65BW?xSG&#@uU,DS*,?.+(o(#1vCS8#CHF>TlGW'b)Tq7VT9q^*^$$.:&N@@"
   3540    "$&)WHtPm*5_rO0&e%K&#-30j(E4#'Zb.o/(Tpm$>K'f@[PvFl,hfINTNU6u'0pao7%XUp9]5.>%h`8_=VYbxuel.NTSsJfLacFu3B'lQSu/m6-Oqem8T+oE--$0a/k]uj9EwsG>%veR*"
   3541    "hv^BFpQj:K'#SJ,sB-'#](j.Lg92rTw-*n%@/;39rrJF,l#qV%OrtBeC6/,;qB3ebNW[?,Hqj2L.1NP&GjUR=1D8QaS3Up&@*9wP?+lo7b?@%'k4`p0Z$22%K3+iCZj?XJN4Nm&+YF]u"
   3542    "@-W$U%VEQ/,,>>#)D<h#`)h0:<Q6909ua+&VU%n2:cG3FJ-%@Bj-DgLr`Hw&HAKjKjseK</xKT*)B,N9X3]krc12t'pgTV(Lv-tL[xg_%=M_q7a^x?7Ubd>#%8cY#YZ?=,`Wdxu/ae&#"
   3543    "w6)R89tI#6@s'(6Bf7a&?S=^ZI_kS&ai`&=tE72L_D,;^R)7[$s<Eh#c&)q.MXI%#v9ROa5FZO%sF7q7Nwb&#ptUJ:aqJe$Sl68%.D###EC><?-aF&#RNQv>o8lKN%5/$(vdfq7+ebA#"
   3544    "u1p]ovUKW&Y%q]'>$1@-[xfn$7ZTp7mM,G,Ko7a&Gu%G[RMxJs[0MM%wci.LFDK)(<c`Q8N)jEIF*+?P2a8g%)$q]o2aH8C&<SibC/q,(e:v;-b#6[$NtDZ84Je2KNvB#$P5?tQ3nt(0"
   3545    "d=j.LQf./Ll33+(;q3L-w=8dX$#WF&uIJ@-bfI>%:_i2B5CsR8&9Z&#=mPEnm0f`<&c)QL5uJ#%u%lJj+D-r;BoF&#4DoS97h5g)E#o:&S4weDF,9^Hoe`h*L+_a*NrLW-1pG_&2UdB8"
   3546    "6e%B/:=>)N4xeW.*wft-;$'58-ESqr<b?UI(_%@[P46>#U`'6AQ]m&6/`Z>#S?YY#Vc;r7U2&326d=w&H####?TZ`*4?&.MK?LP8Vxg>$[QXc%QJv92.(Db*B)gb*BM9dM*hJMAo*c&#"
   3547    "b0v=Pjer]$gG&JXDf->'StvU7505l9$AFvgYRI^&<^b68?j#q9QX4SM'RO#&sL1IM.rJfLUAj221]d##DW=m83u5;'bYx,*Sl0hL(W;;$doB&O/TQ:(Z^xBdLjL<Lni;''X.`$#8+1GD"
   3548    ":k$YUWsbn8ogh6rxZ2Z9]%nd+>V#*8U_72Lh+2Q8Cj0i:6hp&$C/:p(HK>T8Y[gHQ4`4)'$Ab(Nof%V'8hL&#<NEdtg(n'=S1A(Q1/I&4([%dM`,Iu'1:_hL>SfD07&6D<fp8dHM7/g+"
   3549    "tlPN9J*rKaPct&?'uBCem^jn%9_K)<,C5K3s=5g&GmJb*[SYq7K;TRLGCsM-$$;S%:Y@r7AK0pprpL<Lrh,q7e/%KWK:50I^+m'vi`3?%Zp+<-d+$L-Sv:@.o19n$s0&39;kn;S%BSq*"
   3550    "$3WoJSCLweV[aZ'MQIjO<7;X-X;&+dMLvu#^UsGEC9WEc[X(wI7#2.(F0jV*eZf<-Qv3J-c+J5AlrB#$p(H68LvEA'q3n0#m,[`*8Ft)FcYgEud]CWfm68,(aLA$@EFTgLXoBq/UPlp7"
   3551    ":d[/;r_ix=:TF`S5H-b<LI&HY(K=h#)]Lk$K14lVfm:x$H<3^Ql<M`$OhapBnkup'D#L$Pb_`N*g]2e;X/Dtg,bsj&K#2[-:iYr'_wgH)NUIR8a1n#S?Yej'h8^58UbZd+^FKD*T@;6A"
   3552    "7aQC[K8d-(v6GI$x:T<&'Gp5Uf>@M.*J:;$-rv29'M]8qMv-tLp,'886iaC=Hb*YJoKJ,(j%K=H`K.v9HggqBIiZu'QvBT.#=)0ukruV&.)3=(^1`o*Pj4<-<aN((^7('#Z0wK#5GX@7"
   3553    "u][`*S^43933A4rl][`*O4CgLEl]v$1Q3AeF37dbXk,.)vj#x'd`;qgbQR%FW,2(?LO=s%Sc68%NP'##Aotl8x=BE#j1UD([3$M(]UI2LX3RpKN@;/#f'f/&_mt&F)XdF<9t4)Qa.*kT"
   3554    "LwQ'(TTB9.xH'>#MJ+gLq9-##@HuZPN0]u:h7.T..G:;$/Usj(T7`Q8tT72LnYl<-qx8;-HV7Q-&Xdx%1a,hC=0u+HlsV>nuIQL-5<N?)NBS)QN*_I,?&)2'IM%L3I)X((e/dl2&8'<M"
   3555    ":^#M*Q+[T.Xri.LYS3v%fF`68h;b-X[/En'CR.q7E)p'/kle2HM,u;^%OKC-N+Ll%F9CF<Nf'^#t2L,;27W:0O@6##U6W7:$rJfLWHj$#)woqBefIZ.PK<b*t7ed;p*_m;4ExK#h@&]>"
   3556    "_>@kXQtMacfD.m-VAb8;IReM3$wf0''hra*so568'Ip&vRs849'MRYSp%:t:h5qSgwpEr$B>Q,;s(C#$)`svQuF$##-D,##,g68@2[T;.XSdN9Qe)rpt._K-#5wF)sP'##p#C0c%-Gb%"
   3557    "hd+<-j'Ai*x&&HMkT]C'OSl##5RG[JXaHN;d'uA#x._U;.`PU@(Z3dt4r152@:v,'R.Sj'w#0<-;kPI)FfJ&#AYJ&#//)>-k=m=*XnK$>=)72L]0I%>.G690a:$##<,);?;72#?x9+d;"
   3558    "^V'9;jY@;)br#q^YQpx:X#Te$Z^'=-=bGhLf:D6&bNwZ9-ZD#n^9HhLMr5G;']d&6'wYmTFmL<LD)F^%[tC'8;+9E#C$g%#5Y>q9wI>P(9mI[>kC-ekLC/R&CH+s'B;K-M6$EB%is00:"
   3559    "+A4[7xks.LrNk0&E)wILYF@2L'0Nb$+pv<(2.768/FrY&h$^3i&@+G%JT'<-,v`3;_)I9M^AE]CN?Cl2AZg+%4iTpT3<n-&%H%b<FDj2M<hH=&Eh<2Len$b*aTX=-8QxN)k11IM1c^j%"
   3560    "9s<L<NFSo)B?+<-(GxsF,^-Eh@$4dXhN$+#rxK8'je'D7k`e;)2pYwPA'_p9&@^18ml1^[@g4t*[JOa*[=Qp7(qJ_oOL^('7fB&Hq-:sf,sNj8xq^>$U4O]GKx'm9)b@p7YsvK3w^YR-"
   3561    "CdQ*:Ir<($u&)#(&?L9Rg3H)4fiEp^iI9O8KnTj,]H?D*r7'M;PwZ9K0E^k&-cpI;.p/6_vwoFMV<->#%Xi.LxVnrU(4&8/P+:hLSKj$#U%]49t'I:rgMi'FL@a:0Y-uA[39',(vbma*"
   3562    "hU%<-SRF`Tt:542R_VV$p@[p8DV[A,?1839FWdF<TddF<9Ah-6&9tWoDlh]&1SpGMq>Ti1O*H&#(AL8[_P%.M>v^-))qOT*F5Cq0`Ye%+$B6i:7@0IX<N+T+0MlMBPQ*Vj>SsD<U4JHY"
   3563    "8kD2)2fU/M#$e.)T4,_=8hLim[&);?UkK'-x?'(:siIfL<$pFM`i<?%W(mGDHM%>iWP,##P`%/L<eXi:@Z9C.7o=@(pXdAO/NLQ8lPl+HPOQa8wD8=^GlPa8TKI1CjhsCTSLJM'/Wl>-"
   3564    "S(qw%sf/@%#B6;/U7K]uZbi^Oc^2n<bhPmUkMw>%t<)'mEVE''n`WnJra$^TKvX5B>;_aSEK',(hwa0:i4G?.Bci.(X[?b*($,=-n<.Q%`(X=?+@Am*Js0&=3bh8K]mL<LoNs'6,'85`"
   3565    "0?t/'_U59@]ddF<#LdF<eWdF<OuN/45rY<-L@&#+fm>69=Lb,OcZV/);TTm8VI;?%OtJ<(b4mq7M6:u?KRdF<gR@2L=FNU-<b[(9c/ML3m;Z[$oF3g)GAWqpARc=<ROu7cL5l;-[A]%/"
   3566    "+fsd;l#SafT/f*W]0=O'$(Tb<[)*@e775R-:Yob%g*>l*:xP?Yb.5)%w_I?7uk5JC+FS(m#i'k.'a0i)9<7b'fs'59hq$*5Uhv##pi^8+hIEBF`nvo`;'l0.^S1<-wUK2/Coh58KKhLj"
   3567    "M=SO*rfO`+qC`W-On.=AJ56>>i2@2LH6A:&5q`?9I3@@'04&p2/LVa*T-4<-i3;M9UvZd+N7>b*eIwg:CC)c<>nO&#<IGe;__.thjZl<%w(Wk2xmp4Q@I#I9,DF]u7-P=.-_:YJ]aS@V"
   3568    "?6*C()dOp7:WL,b&3Rg/.cmM9&r^>$(>.Z-I&J(Q0Hd5Q%7Co-b`-c<N(6r@ip+AurK<m86QIth*#v;-OBqi+L7wDE-Ir8K['m+DDSLwK&/.?-V%U_%3:qKNu$_b*B-kp7NaD'QdWQPK"
   3569    "Yq[@>P)hI;*_F]u`Rb[.j8_Q/<&>uu+VsH$sM9TA%?)(vmJ80),P7E>)tjD%2L=-t#fK[%`v=Q8<FfNkgg^oIbah*#8/Qt$F&:K*-(N/'+1vMB,u()-a.VUU*#[e%gAAO(S>WlA2);Sa"
   3570    ">gXm8YB`1d@K#n]76-a$U,mF<fX]idqd)<3,]J7JmW4`6]uks=4-72L(jEk+:bJ0M^q-8Dm_Z?0olP1C9Sa&H[d&c$ooQUj]Exd*3ZM@-WGW2%s',B-_M%>%Ul:#/'xoFM9QX-$.QN'>"
   3571    "[%$Z$uF6pA6Ki2O5:8w*vP1<-1`[G,)-m#>0`P&#eb#.3i)rtB61(o'$?X3B</R90;eZ]%Ncq;-Tl]#F>2Qft^ae_5tKL9MUe9b*sLEQ95C&`=G?@Mj=wh*'3E>=-<)Gt*Iw)'QG:`@I"
   3572    "wOf7&]1i'S01B+Ev/Nac#9S;=;YQpg_6U`*kVY39xK,[/6Aj7:'1Bm-_1EYfa1+o&o4hp7KN_Q(OlIo@S%;jVdn0'1<Vc52=u`3^o-n1'g4v58Hj&6_t7$##?M)c<$bgQ_'SY((-xkA#"
   3573    "Y(,p'H9rIVY-b,'%bCPF7.J<Up^,(dU1VY*5#WkTU>h19w,WQhLI)3S#f$2(eb,jr*b;3Vw]*7NH%$c4Vs,eD9>XW8?N]o+(*pgC%/72LV-u<Hp,3@e^9UB1J+ak9-TN/mhKPg+AJYd$"
   3574    "MlvAF_jCK*.O-^(63adMT->W%iewS8W6m2rtCpo'RS1R84=@paTKt)>=%&1[)*vp'u+x,VrwN;&]kuO9JDbg=pO$J*.jVe;u'm0dr9l,<*wMK*Oe=g8lV_KEBFkO'oU]^=[-792#ok,)"
   3575    "i]lR8qQ2oA8wcRCZ^7w/Njh;?.stX?Q1>S1q4Bn$)K1<-rGdO'$Wr.Lc.CG)$/*JL4tNR/,SVO3,aUw'DJN:)Ss;wGn9A32ijw%FL+Z0Fn.U9;reSq)bmI32U==5ALuG&#Vf1398/pVo"
   3576    "1*c-(aY168o<`JsSbk-,1N;$>0:OUas(3:8Z972LSfF8eb=c-;>SPw7.6hn3m`9^Xkn(r.qS[0;T%&Qc=+STRxX'q1BNk3&*eu2;&8q$&x>Q#Q7^Tf+6<(d%ZVmj2bDi%.3L2n+4W'$P"
   3577    "iDDG)g,r%+?,$@?uou5tSe2aN_AQU*<h`e-GI7)?OK2A.d7_c)?wQ5AS@DL3r#7fSkgl6-++D:'A,uq7SvlB$pcpH'q3n0#_%dY#xCpr-l<F0NR@-##FEV6NTF6##$l84N1w?AO>'IAO"
   3578    "URQ##V^Fv-XFbGM7Fl(N<3DhLGF%q.1rC$#:T__&Pi68%0xi_&[qFJ(77j_&JWoF.V735&T,[R*:xFR*K5>>#`bW-?4Ne_&6Ne_&6Ne_&n`kr-#GJcM6X;uM6X;uM(.a..^2TkL%oR(#"
   3579    ";u.T%fAr%4tJ8&><1=GHZ_+m9/#H1F^R#SC#*N=BA9(D?v[UiFY>>^8p,KKF.W]L29uLkLlu/+4T<XoIB&hx=T1PcDaB&;HH+-AFr?(m9HZV)FKS8JCw;SD=6[^/DZUL`EUDf]GGlG&>"
   3580    "w$)F./^n3+rlo+DB;5sIYGNk+i1t-69Jg--0pao7Sm#K)pdHW&;LuDNH@H>#/X-TI(;P>#,Gc>#0Su>#4`1?#8lC?#<xU?#@.i?#D:%@#HF7@#LRI@#P_[@#Tkn@#Xw*A#]-=A#a9OA#"
   3581    "d<F&#*;G##.GY##2Sl##6`($#:l:$#>xL$#B.`$#F:r$#JF.%#NR@%#R_R%#Vke%#Zww%#_-4&#3^Rh%Sflr-k'MS.o?.5/sWel/wpEM0%3'/1)K^f1-d>G21&v(35>V`39V7A4=onx4"
   3582    "A1OY5EI0;6Ibgr6M$HS7Q<)58C5w,;WoA*#[%T*#`1g*#d=#+#hI5+#lUG+#pbY+#tnl+#x$),#&1;,#*=M,#.I`,#2Ur,#6b.-#;w[H#iQtA#m^0B#qjBB#uvTB##-hB#'9$C#+E6C#"
   3583    "/QHC#3^ZC#7jmC#;v)D#?,<D#C8ND#GDaD#KPsD#O]/E#g1A5#KA*1#gC17#MGd;#8(02#L-d3#rWM4#Hga1#,<w0#T.j<#O#'2#CYN1#qa^:#_4m3#o@/=#eG8=#t8J5#`+78#4uI-#"
   3584    "m3B2#SB[8#Q0@8#i[*9#iOn8#1Nm;#^sN9#qh<9#:=x-#P;K2#$%X9#bC+.#Rg;<#mN=.#MTF.#RZO.#2?)4#Y#(/#[)1/#b;L/#dAU/#0Sv;#lY$0#n`-0#sf60#(F24#wrH0#%/e0#"
   3585    "TmD<#%JSMFove:CTBEXI:<eh2g)B,3h2^G3i;#d3jD>)4kMYD4lVu`4m`:&5niUA5@(A5BA1]PBB:xlBCC=2CDLXMCEUtiCf&0g2'tN?PGT4CPGT4CPGT4CPGT4CPGT4CPGT4CPGT4CP"
   3586    "GT4CPGT4CPGT4CPGT4CPGT4CPGT4CP-qekC`.9kEg^+F$kwViFJTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5o,^<-28ZI'O?;xp"
   3587    "O?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xp;7q-#lLYI:xvD=#";
   3588
   3589static const char* GetDefaultCompressedFontDataTTFBase85()
   3590{
   3591    return proggy_clean_ttf_compressed_data_base85;
   3592}
   3593
   3594#endif // #ifndef IMGUI_DISABLE