efl/legacy/evas/src/evas_events.c

#include "Evas_private.h"
#include "Evas.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

Evas_Object
_evas_highest_object_at_point(Evas e, int x, int y)
{
   double cx, cy;
   
   cx = evas_screen_x_to_world(e, x);
   cy = evas_screen_y_to_world(e, y);
   return evas_object_at_position(e, cx, cy);
}

Evas_List
_evas_objects_at_point(Evas e, int x, int y)
{
   double cx, cy;
   
   cx = evas_screen_x_to_world(e, x);
   cy = evas_screen_y_to_world(e, y);
   return evas_objects_at_position(e, cx, cy);
}	 

/* events */
void
evas_event_button_down(Evas e, int x, int y, int b)
{
   Evas_Object o;
   
   if (!e) return;
   if ((b < 1) || (b > 32)) return;
   if (!e->mouse.buttons) 
      {
	 o = _evas_highest_object_at_point(e, x, y);
	 e->mouse.button_object = o;
      }
   e->mouse.buttons |= (1 << (b - 1));
   e->mouse.x = x;
   e->mouse.y = y;
   if (e->mouse.button_object)
      _evas_callback_call(e, e->mouse.button_object, CALLBACK_MOUSE_DOWN, 
			  b, x, y);
}

void
evas_event_button_up(Evas e, int x, int y, int b)
{
   Evas_Object o;
   
   if (!e) return;
   if ((b < 1) || (b > 32)) return;
   e->mouse.buttons &= ~(1 << (b - 1));
   e->mouse.x = x;
   e->mouse.y = y;
   if (e->mouse.button_object)
      _evas_callback_call(e, e->mouse.button_object, CALLBACK_MOUSE_UP, 
			  b, x, y);
   else if (e->mouse.object)
      _evas_callback_call(e, e->mouse.object, CALLBACK_MOUSE_UP, 
			  b, x, y);
   if (!e->mouse.buttons) 
      {
	 if ((e->mouse.button_object) &&
	     (e->mouse.object != e->mouse.button_object))
	    _evas_callback_call(e, e->mouse.button_object, CALLBACK_MOUSE_OUT, 
				e->mouse.buttons, x, y);
	 e->mouse.button_object = NULL;
      }
}

void
evas_event_move(Evas e, int x, int y)
{
   Evas_Object o;

   if (!e) return;
   o = _evas_highest_object_at_point(e, x, y);
   if (o != e->mouse.object)
     {
	if (e->mouse.object)
	  {
	     if (!e->mouse.button_object)
	       {
		  _evas_callback_call(e, e->mouse.object, CALLBACK_MOUSE_MOVE, 
				      e->mouse.buttons, e->mouse.x, e->mouse.y);
		  _evas_callback_call(e, e->mouse.object, CALLBACK_MOUSE_OUT, 
				      e->mouse.buttons, e->mouse.x, e->mouse.y);
	       }
	     else
		_evas_callback_call(e, e->mouse.button_object, CALLBACK_MOUSE_MOVE, 
				    e->mouse.buttons, e->mouse.x, e->mouse.y);
	  }
	e->mouse.x = x;
	e->mouse.y = y;
	e->mouse.object = o;
	if (e->mouse.object)
	  {
	     if (!e->mouse.button_object)
	       {
		  _evas_callback_call(e, e->mouse.object, CALLBACK_MOUSE_IN, 
				      e->mouse.buttons, e->mouse.x, e->mouse.y);
		  _evas_callback_call(e, e->mouse.object, CALLBACK_MOUSE_MOVE, 
				      e->mouse.buttons, e->mouse.x, e->mouse.y);
	       }
	  }
	return;
     }   
   e->mouse.x = x;
   e->mouse.y = y;
   if (e->mouse.button_object)
      _evas_callback_call(e, e->mouse.button_object, CALLBACK_MOUSE_MOVE, 
			  e->mouse.buttons, e->mouse.x, e->mouse.y);
   else if (e->mouse.object)
      _evas_callback_call(e, e->mouse.object, CALLBACK_MOUSE_MOVE, 
			  e->mouse.buttons, e->mouse.x, e->mouse.y);
}

void
evas_event_enter(Evas e)
{
   if (!e) return;
   e->mouse.in = 1;
}

void
evas_event_leave(Evas e)
{
   if (!e) return;
   e->mouse.in = 0;
   if ((e->mouse.object) && (!e->mouse.button_object))
     {
	_evas_callback_call(e, e->mouse.object, CALLBACK_MOUSE_MOVE, 
			    e->mouse.buttons, e->mouse.x, e->mouse.y);
	_evas_callback_call(e, e->mouse.object, CALLBACK_MOUSE_OUT, 
			    e->mouse.buttons, e->mouse.x, e->mouse.y);
	e->mouse.object = NULL;
     }
}

Evas_Object
evas_get_object_under_mouse(Evas e)
{
   if (!e) return NULL;
   return _evas_highest_object_at_point(e, e->mouse.x, e->mouse.y);
}

int
evas_pointer_in(Evas e)
{
   if (!e) return 0;
   return e->mouse.in;
}

void
evas_pointer_pos(Evas e, int *x, int *y)
{
   if (!e) return;
   if (x) *x = e->mouse.x;
   if (y) *y = e->mouse.y;
}

int
evas_pointer_buttons(Evas e)
{
   if (!e) return 0;
   return e->mouse.buttons;
}

void
evas_pointer_ungrab(Evas e)
{
   e->mouse.buttons = 0;
   e->mouse.button_object = NULL;
}