cscg22-gearboy

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

SDL_androidtouch.c (4077B)

      1/*
      2  Simple DirectMedia Layer
      3  Copyright (C) 1997-2014 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#include "../../SDL_internal.h"
     22
     23#if SDL_VIDEO_DRIVER_ANDROID
     24
     25#include <android/log.h>
     26
     27#include "SDL_events.h"
     28#include "../../events/SDL_mouse_c.h"
     29#include "../../events/SDL_touch_c.h"
     30#include "SDL_log.h"
     31
     32#include "SDL_androidtouch.h"
     33
     34#include "../../core/android/SDL_android.h"
     35
     36#define ACTION_DOWN 0
     37#define ACTION_UP 1
     38#define ACTION_MOVE 2
     39#define ACTION_CANCEL 3
     40#define ACTION_OUTSIDE 4
     41#define ACTION_POINTER_DOWN 5
     42#define ACTION_POINTER_UP 6
     43
     44static void Android_GetWindowCoordinates(float x, float y,
     45                                         int *window_x, int *window_y)
     46{
     47    int window_w, window_h;
     48
     49    SDL_GetWindowSize(Android_Window, &window_w, &window_h);
     50    *window_x = (int)(x * window_w);
     51    *window_y = (int)(y * window_h);
     52}
     53
     54void Android_InitTouch(void)
     55{
     56    int i;
     57    int* ids;
     58    int number = Android_JNI_GetTouchDeviceIds(&ids);
     59    if (0 < number) {
     60        for (i = 0; i < number; ++i) {
     61            SDL_AddTouch((SDL_TouchID) ids[i], ""); /* no error handling */
     62        }
     63        SDL_free(ids);
     64    }
     65}
     66
     67void Android_OnTouch(int touch_device_id_in, int pointer_finger_id_in, int action, float x, float y, float p)
     68{
     69    SDL_TouchID touchDeviceId = 0;
     70    SDL_FingerID fingerId = 0;
     71    int window_x, window_y;
     72    static SDL_FingerID pointerFingerID = 0;
     73
     74    if (!Android_Window) {
     75        return;
     76    }
     77
     78    touchDeviceId = (SDL_TouchID)touch_device_id_in;
     79    if (SDL_AddTouch(touchDeviceId, "") < 0) {
     80        SDL_Log("error: can't add touch %s, %d", __FILE__, __LINE__);
     81    }
     82
     83    fingerId = (SDL_FingerID)pointer_finger_id_in;
     84    switch (action) {
     85        case ACTION_DOWN:
     86            /* Primary pointer down */
     87            Android_GetWindowCoordinates(x, y, &window_x, &window_y);
     88            /* send moved event */
     89            SDL_SendMouseMotion(Android_Window, SDL_TOUCH_MOUSEID, 0, window_x, window_y);
     90            /* send mouse down event */
     91            SDL_SendMouseButton(Android_Window, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
     92            pointerFingerID = fingerId;
     93        case ACTION_POINTER_DOWN:
     94            /* Non primary pointer down */
     95            SDL_SendTouch(touchDeviceId, fingerId, SDL_TRUE, x, y, p);
     96            break;
     97            
     98        case ACTION_MOVE:
     99            if (!pointerFingerID) {
    100                Android_GetWindowCoordinates(x, y, &window_x, &window_y);
    101
    102                /* send moved event */
    103                SDL_SendMouseMotion(Android_Window, SDL_TOUCH_MOUSEID, 0, window_x, window_y);
    104            }
    105            SDL_SendTouchMotion(touchDeviceId, fingerId, x, y, p);
    106            break;
    107            
    108        case ACTION_UP:
    109            /* Primary pointer up */
    110            /* send mouse up */
    111            pointerFingerID = (SDL_FingerID) 0;
    112            SDL_SendMouseButton(Android_Window, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
    113        case ACTION_POINTER_UP:
    114            /* Non primary pointer up */
    115            SDL_SendTouch(touchDeviceId, fingerId, SDL_FALSE, x, y, p);
    116            break;
    117            
    118        default:
    119            break;
    120    }
    121}
    122
    123#endif /* SDL_VIDEO_DRIVER_ANDROID */
    124
    125/* vi: set ts=4 sw=4 expandtab: */