source/input/android/mouse.cpp

   1 #include "mouse.h"
   2 #include <msp/graphics/window_private.h>
   3 #include "keys.h"
   4
   5 namespace Msp {
   6 namespace Input {
   7
   8 void Mouse::input_event(const Graphics::Window::Event &event)
   9 {
  10         int type = AInputEvent_getType(event.aevent);
  11         if(type!=AINPUT_EVENT_TYPE_MOTION)
  12                 return;
  13
  14         int source = AInputEvent_getSource(event.aevent);
  15         if(window.get_touch_input() && source!=AINPUT_SOURCE_MOUSE && source!=AINPUT_SOURCE_TOUCHPAD)
  16                 return;
  17
  18         /* Emulate a mouse with the touch events of a single finger.  If more
  19         fingers appear while the first one is held down, they are ignored, even if
  20         the first finger is released. */
  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         int pointer_zero = -1;
  28         for(int i=0; (i<pointer_count && pointer_zero<0); ++i)
  29                 if(AMotionEvent_getPointerId(event.aevent, i)==0)
  30                         pointer_zero = i;
  31
  32         if(pointer_zero>=0)
  33         {
  34                 float x = AMotionEvent_getX(event.aevent, pointer_zero);
  35                 float y = AMotionEvent_getY(event.aevent, pointer_zero);
  36                 set_axis_value(MOUSE_X_AXIS, x*2/window.get_width()-1, true);
  37                 set_axis_value(MOUSE_Y_AXIS, 1-y*2/window.get_height(), true);
  38         }
  39
  40         switch(action)
  41         {
  42         case AMOTION_EVENT_ACTION_DOWN:
  43         case AMOTION_EVENT_ACTION_UP:
  44         case AMOTION_EVENT_ACTION_POINTER_DOWN:
  45         case AMOTION_EVENT_ACTION_POINTER_UP:
  46                 if(action_pointer==0)
  47                         set_button_state(MOUSE_LEFT, action==AMOTION_EVENT_ACTION_DOWN, true);
  48                 break;
  49         default:;
  50         }
  51 }
  52
  53 } // namespace Input
  54 } // namespace Msp