source/input/android/touchscreen.cpp

   1 #include <msp/graphics/window_private.h>
   2 #include "touchscreen.h"
   3
   4 namespace Msp {
   5 namespace Input {
   6
   7 bool Touchscreen::is_available()
   8 {
   9         return true;
  10 }
  11
  12 void Touchscreen::input_event(const Graphics::Window::Event &event)
  13 {
  14         int type = AInputEvent_getType(event.aevent);
  15         if(type!=AINPUT_EVENT_TYPE_MOTION)
  16                 return;
  17
  18         int source = AInputEvent_getSource(event.aevent);
  19         if(source!=AINPUT_SOURCE_TOUCHSCREEN && source!=AINPUT_SOURCE_STYLUS)
  20                 return;
  21
  22         int action = AMotionEvent_getAction(event.aevent);
  23         int action_pointer = (action&AMOTION_EVENT_ACTION_POINTER_INDEX_MASK)>>AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
  24         action &= AMOTION_EVENT_ACTION_MASK;
  25
  26         int pointer_count = AMotionEvent_getPointerCount(event.aevent);
  27         for(int i=0; i<pointer_count; ++i)
  28         {
  29                 int pointer = AMotionEvent_getPointerId(event.aevent, i);
  30                 float x = AMotionEvent_getX(event.aevent, i);
  31                 float y = AMotionEvent_getY(event.aevent, i);
  32                 touch_move(pointer, x*2/window.get_width()-1, 1-y*2/window.get_height());
  33         }
  34
  35         switch(action)
  36         {
  37         case AMOTION_EVENT_ACTION_DOWN:
  38         case AMOTION_EVENT_ACTION_POINTER_DOWN:
  39                 touch_down(AMotionEvent_getPointerId(event.aevent, action_pointer));
  40                 break;
  41         case AMOTION_EVENT_ACTION_UP:
  42         case AMOTION_EVENT_ACTION_POINTER_UP:
  43                 touch_up(AMotionEvent_getPointerId(event.aevent, action_pointer));
  44                 break;
  45         default:;
  46         }
  47 }
  48
  49 } // namespace Input
  50 } // namespace Msp