kc3-lang/SDL/src/video/android/SDL_androidtouch.c

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• Hash : 1ed1f7f2
  Author :
  Date : 2014-06-28T12:36:44
  

  Fixes #2611 #2610, Touch events cause crash on Android, thanks Alvin & Sylvain This bug was introduced on this rev: https://hg.libsdl.org/SDL/rev/42f6bd8c8575

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• src/video/android/SDL_androidtouch.c

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  #include "../../SDL_internal.h"
  
  #if SDL_VIDEO_DRIVER_ANDROID
  
  #include <android/log.h>
  
  #include "SDL_events.h"
  #include "../../events/SDL_mouse_c.h"
  #include "../../events/SDL_touch_c.h"
  #include "SDL_log.h"
  
  #include "SDL_androidtouch.h"
  
  #include "../../core/android/SDL_android.h"
  
  #define ACTION_DOWN 0
  #define ACTION_UP 1
  #define ACTION_MOVE 2
  #define ACTION_CANCEL 3
  #define ACTION_OUTSIDE 4
  #define ACTION_POINTER_DOWN 5
  #define ACTION_POINTER_UP 6
  
  static void Android_GetWindowCoordinates(float x, float y,
                                           int *window_x, int *window_y)
  {
      int window_w, window_h;
  
      SDL_GetWindowSize(Android_Window, &window_w, &window_h);
      *window_x = (int)(x * window_w);
      *window_y = (int)(y * window_h);
  }
  
  void Android_InitTouch(void)
  {
      int i;
      int* ids;
      int number = Android_JNI_GetTouchDeviceIds(&ids);
      if (0 < number) {
          for (i = 0; i < number; ++i) {
              SDL_AddTouch((SDL_TouchID) ids[i], ""); /* no error handling */
          }
          SDL_free(ids);
      }
  }
  
  void Android_OnTouch(int touch_device_id_in, int pointer_finger_id_in, int action, float x, float y, float p)
  {
      SDL_TouchID touchDeviceId = 0;
      SDL_FingerID fingerId = 0;
      int window_x, window_y;
      static SDL_FingerID pointerFingerID = 0;
  
      if (!Android_Window) {
          return;
      }
  
      touchDeviceId = (SDL_TouchID)touch_device_id_in;
      if (SDL_AddTouch(touchDeviceId, "") < 0) {
          SDL_Log("error: can't add touch %s, %d", __FILE__, __LINE__);
      }
  
      fingerId = (SDL_FingerID)pointer_finger_id_in;
      switch (action) {
          case ACTION_DOWN:
              /* Primary pointer down */
              Android_GetWindowCoordinates(x, y, &window_x, &window_y);
              /* send moved event */
              SDL_SendMouseMotion(Android_Window, SDL_TOUCH_MOUSEID, 0, window_x, window_y);
              /* send mouse down event */
              SDL_SendMouseButton(Android_Window, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
              pointerFingerID = fingerId;
          case ACTION_POINTER_DOWN:
              /* Non primary pointer down */
              SDL_SendTouch(touchDeviceId, fingerId, SDL_TRUE, x, y, p);
              break;
              
          case ACTION_MOVE:
              if (!pointerFingerID) {
                  Android_GetWindowCoordinates(x, y, &window_x, &window_y);
  
                  /* send moved event */
                  SDL_SendMouseMotion(Android_Window, SDL_TOUCH_MOUSEID, 0, window_x, window_y);
              }
              SDL_SendTouchMotion(touchDeviceId, fingerId, x, y, p);
              break;
              
          case ACTION_UP:
              /* Primary pointer up */
              /* send mouse up */
              pointerFingerID = (SDL_FingerID) 0;
              SDL_SendMouseButton(Android_Window, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
          case ACTION_POINTER_UP:
              /* Non primary pointer up */
              SDL_SendTouch(touchDeviceId, fingerId, SDL_FALSE, x, y, p);
              break;
              
          default:
              break;
      }
  }
  
  #endif /* SDL_VIDEO_DRIVER_ANDROID */
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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