cscg22-gearboy

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

SDL_touch.h (2946B)

      1/*
      2  Simple DirectMedia Layer
      3  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
      4
      5  This software is provided 'as-is', without any express or implied
      6  warranty.  In no event will the authors be held liable for any damages
      7  arising from the use of this software.
      8
      9  Permission is granted to anyone to use this software for any purpose,
     10  including commercial applications, and to alter it and redistribute it
     11  freely, subject to the following restrictions:
     12
     13  1. The origin of this software must not be misrepresented; you must not
     14     claim that you wrote the original software. If you use this software
     15     in a product, an acknowledgment in the product documentation would be
     16     appreciated but is not required.
     17  2. Altered source versions must be plainly marked as such, and must not be
     18     misrepresented as being the original software.
     19  3. This notice may not be removed or altered from any source distribution.
     20*/
     21
     22/**
     23 *  \file SDL_touch.h
     24 *
     25 *  Include file for SDL touch event handling.
     26 */
     27
     28#ifndef SDL_touch_h_
     29#define SDL_touch_h_
     30
     31#include "SDL_stdinc.h"
     32#include "SDL_error.h"
     33#include "SDL_video.h"
     34
     35#include "begin_code.h"
     36/* Set up for C function definitions, even when using C++ */
     37#ifdef __cplusplus
     38extern "C" {
     39#endif
     40
     41typedef Sint64 SDL_TouchID;
     42typedef Sint64 SDL_FingerID;
     43
     44typedef enum
     45{
     46    SDL_TOUCH_DEVICE_INVALID = -1,
     47    SDL_TOUCH_DEVICE_DIRECT,            /* touch screen with window-relative coordinates */
     48    SDL_TOUCH_DEVICE_INDIRECT_ABSOLUTE, /* trackpad with absolute device coordinates */
     49    SDL_TOUCH_DEVICE_INDIRECT_RELATIVE  /* trackpad with screen cursor-relative coordinates */
     50} SDL_TouchDeviceType;
     51
     52typedef struct SDL_Finger
     53{
     54    SDL_FingerID id;
     55    float x;
     56    float y;
     57    float pressure;
     58} SDL_Finger;
     59
     60/* Used as the device ID for mouse events simulated with touch input */
     61#define SDL_TOUCH_MOUSEID ((Uint32)-1)
     62
     63/* Used as the SDL_TouchID for touch events simulated with mouse input */
     64#define SDL_MOUSE_TOUCHID ((Sint64)-1)
     65
     66
     67/* Function prototypes */
     68
     69/**
     70 *  \brief Get the number of registered touch devices.
     71 */
     72extern DECLSPEC int SDLCALL SDL_GetNumTouchDevices(void);
     73
     74/**
     75 *  \brief Get the touch ID with the given index, or 0 if the index is invalid.
     76 */
     77extern DECLSPEC SDL_TouchID SDLCALL SDL_GetTouchDevice(int index);
     78
     79/**
     80 * \brief Get the type of the given touch device.
     81 */
     82extern DECLSPEC SDL_TouchDeviceType SDLCALL SDL_GetTouchDeviceType(SDL_TouchID touchID);
     83
     84/**
     85 *  \brief Get the number of active fingers for a given touch device.
     86 */
     87extern DECLSPEC int SDLCALL SDL_GetNumTouchFingers(SDL_TouchID touchID);
     88
     89/**
     90 *  \brief Get the finger object of the given touch, with the given index.
     91 */
     92extern DECLSPEC SDL_Finger * SDLCALL SDL_GetTouchFinger(SDL_TouchID touchID, int index);
     93
     94/* Ends C function definitions when using C++ */
     95#ifdef __cplusplus
     96}
     97#endif
     98#include "close_code.h"
     99
    100#endif /* SDL_touch_h_ */
    101
    102/* vi: set ts=4 sw=4 expandtab: */