gdkevents.c

gtk是linux一款强大的夸平台的图形化开发工具

		     event->key.keyval);
	  if (charcount > 0)
	    g_message ("\t\tlength: %4d string: \"%s\"",
		       charcount, buf);
	}
#endif /* G_ENABLE_DEBUG */
      
      event->key.type = GDK_KEY_PRESS;
      event->key.window = window;
      event->key.time = xevent->xkey.time;
      event->key.state = (GdkModifierType) xevent->xkey.state;
      event->key.string = g_strdup (buf);
      event->key.length = charcount;
      
      break;
      
    case KeyRelease:
      /* Lookup the string corresponding to the given keysym.
       */
#ifdef USE_XIM
      if (buf_len == 0) 
	{
	  buf_len = 128;
	  buf = g_new (gchar, buf_len);
	}
#endif
      keysym = GDK_VoidSymbol;
      charcount = XLookupString (&xevent->xkey, buf, 16,
				 &keysym, &compose);
      event->key.keyval = keysym;      
      
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS, 
		g_message ("key release:\t\twindow: %ld	 key: %12s  %d",
			   xevent->xkey.window,
			   XKeysymToString (event->key.keyval),
			   event->key.keyval));
      
      event->key.type = GDK_KEY_RELEASE;
      event->key.window = window;
      event->key.time = xevent->xkey.time;
      event->key.state = (GdkModifierType) xevent->xkey.state;
      event->key.length = 0;
      event->key.string = NULL;
      
      break;
      
    case ButtonPress:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS, 
		g_message ("button press:\t\twindow: %ld  x,y: %d %d  button: %d",
			   xevent->xbutton.window,
			   xevent->xbutton.x, xevent->xbutton.y,
			   xevent->xbutton.button));
      
      if (window_private &&
	  (window_private->extension_events != 0) &&
	  gdk_input_ignore_core)
	{
	  return_val = FALSE;
	  break;
	}
      
      event->button.type = GDK_BUTTON_PRESS;
      event->button.window = window;
      event->button.time = xevent->xbutton.time;
      event->button.x = xevent->xbutton.x;
      event->button.y = xevent->xbutton.y;
      event->button.x_root = (gfloat)xevent->xbutton.x_root;
      event->button.y_root = (gfloat)xevent->xbutton.y_root;
      event->button.pressure = 0.5;
      event->button.xtilt = 0;
      event->button.ytilt = 0;
      event->button.state = (GdkModifierType) xevent->xbutton.state;
      event->button.button = xevent->xbutton.button;
      event->button.source = GDK_SOURCE_MOUSE;
      event->button.deviceid = GDK_CORE_POINTER;
      
      if ((event->button.time < (button_click_time[1] + TRIPLE_CLICK_TIME)) &&
	  (event->button.window == button_window[1]) &&
	  (event->button.button == button_number[1]))
	{
	  gdk_synthesize_click (event, 3);
	  
	  button_click_time[1] = 0;
	  button_click_time[0] = 0;
	  button_window[1] = NULL;
	  button_window[0] = 0;
	  button_number[1] = -1;
	  button_number[0] = -1;
	}
      else if ((event->button.time < (button_click_time[0] + DOUBLE_CLICK_TIME)) &&
	       (event->button.window == button_window[0]) &&
	       (event->button.button == button_number[0]))
	{
	  gdk_synthesize_click (event, 2);
	  
	  button_click_time[1] = button_click_time[0];
	  button_click_time[0] = event->button.time;
	  button_window[1] = button_window[0];
	  button_window[0] = event->button.window;
	  button_number[1] = button_number[0];
	  button_number[0] = event->button.button;
	}
      else
	{
	  button_click_time[1] = 0;
	  button_click_time[0] = event->button.time;
	  button_window[1] = NULL;
	  button_window[0] = event->button.window;
	  button_number[1] = -1;
	  button_number[0] = event->button.button;
	}

      break;
      
    case ButtonRelease:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS, 
		g_message ("button release:\twindow: %ld  x,y: %d %d  button: %d",
			   xevent->xbutton.window,
			   xevent->xbutton.x, xevent->xbutton.y,
			   xevent->xbutton.button));
      
      if (window_private &&
	  (window_private->extension_events != 0) &&
	  gdk_input_ignore_core)
	{
	  return_val = FALSE;
	  break;
	}
      
      event->button.type = GDK_BUTTON_RELEASE;
      event->button.window = window;
      event->button.time = xevent->xbutton.time;
      event->button.x = xevent->xbutton.x;
      event->button.y = xevent->xbutton.y;
      event->button.x_root = (gfloat)xevent->xbutton.x_root;
      event->button.y_root = (gfloat)xevent->xbutton.y_root;
      event->button.pressure = 0.5;
      event->button.xtilt = 0;
      event->button.ytilt = 0;
      event->button.state = (GdkModifierType) xevent->xbutton.state;
      event->button.button = xevent->xbutton.button;
      event->button.source = GDK_SOURCE_MOUSE;
      event->button.deviceid = GDK_CORE_POINTER;
      
      break;
      
    case MotionNotify:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS,
		g_message ("motion notify:\t\twindow: %ld  x,y: %d %d  hint: %s", 
			   xevent->xmotion.window,
			   xevent->xmotion.x, xevent->xmotion.y,
			   (xevent->xmotion.is_hint) ? "true" : "false"));
      
      if (window_private &&
	  (window_private->extension_events != 0) &&
	  gdk_input_ignore_core)
	{
	  return_val = FALSE;
	  break;
	}
      
      event->motion.type = GDK_MOTION_NOTIFY;
      event->motion.window = window;
      event->motion.time = xevent->xmotion.time;
      event->motion.x = xevent->xmotion.x;
      event->motion.y = xevent->xmotion.y;
      event->motion.x_root = (gfloat)xevent->xmotion.x_root;
      event->motion.y_root = (gfloat)xevent->xmotion.y_root;
      event->motion.pressure = 0.5;
      event->motion.xtilt = 0;
      event->motion.ytilt = 0;
      event->motion.state = (GdkModifierType) xevent->xmotion.state;
      event->motion.is_hint = xevent->xmotion.is_hint;
      event->motion.source = GDK_SOURCE_MOUSE;
      event->motion.deviceid = GDK_CORE_POINTER;
      
      break;
      
    case EnterNotify:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS,
		g_message ("enter notify:\t\twindow: %ld  detail: %d subwin: %ld",
			   xevent->xcrossing.window,
			   xevent->xcrossing.detail,
			   xevent->xcrossing.subwindow));
      
      /* Tell XInput stuff about it if appropriate */
      if (window_private &&
	  !window_private->destroyed &&
	  (window_private->extension_events != 0) &&
	  gdk_input_vtable.enter_event)
	gdk_input_vtable.enter_event (&xevent->xcrossing, window);
      
      event->crossing.type = GDK_ENTER_NOTIFY;
      event->crossing.window = window;
      
      /* If the subwindow field of the XEvent is non-NULL, then
       *  lookup the corresponding GdkWindow.
       */
      if (xevent->xcrossing.subwindow != None)
	event->crossing.subwindow = gdk_window_lookup (xevent->xcrossing.subwindow);
      else
	event->crossing.subwindow = NULL;
      
      event->crossing.time = xevent->xcrossing.time;
      event->crossing.x = xevent->xcrossing.x;
      event->crossing.y = xevent->xcrossing.y;
      event->crossing.x_root = xevent->xcrossing.x_root;
      event->crossing.y_root = xevent->xcrossing.y_root;
      
      /* Translate the crossing mode into Gdk terms.
       */
      switch (xevent->xcrossing.mode)
	{
	case NotifyNormal:
	  event->crossing.mode = GDK_CROSSING_NORMAL;
	  break;
	case NotifyGrab:
	  event->crossing.mode = GDK_CROSSING_GRAB;
	  break;
	case NotifyUngrab:
	  event->crossing.mode = GDK_CROSSING_UNGRAB;
	  break;
	};
      
      /* Translate the crossing detail into Gdk terms.
       */
      switch (xevent->xcrossing.detail)
	{
	case NotifyInferior:
	  event->crossing.detail = GDK_NOTIFY_INFERIOR;
	  break;
	case NotifyAncestor:
	  event->crossing.detail = GDK_NOTIFY_ANCESTOR;
	  break;
	case NotifyVirtual:
	  event->crossing.detail = GDK_NOTIFY_VIRTUAL;
	  break;
	case NotifyNonlinear:
	  event->crossing.detail = GDK_NOTIFY_NONLINEAR;
	  break;
	case NotifyNonlinearVirtual:
	  event->crossing.detail = GDK_NOTIFY_NONLINEAR_VIRTUAL;
	  break;
	default:
	  event->crossing.detail = GDK_NOTIFY_UNKNOWN;
	  break;
	}
      
      event->crossing.focus = xevent->xcrossing.focus;
      event->crossing.state = xevent->xcrossing.state;
  
      break;
      
    case LeaveNotify:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS, 
		g_message ("leave notify:\t\twindow: %ld  detail: %d subwin: %ld",
			   xevent->xcrossing.window,
			   xevent->xcrossing.detail, xevent->xcrossing.subwindow));
      
      event->crossing.type = GDK_LEAVE_NOTIFY;
      event->crossing.window = window;
      
      /* If the subwindow field of the XEvent is non-NULL, then
       *  lookup the corresponding GdkWindow.
       */
      if (xevent->xcrossing.subwindow != None)
	event->crossing.subwindow = gdk_window_lookup (xevent->xcrossing.subwindow);
      else
	event->crossing.subwindow = NULL;
      
      event->crossing.time = xevent->xcrossing.time;
      event->crossing.x = xevent->xcrossing.x;
      event->crossing.y = xevent->xcrossing.y;
      event->crossing.x_root = xevent->xcrossing.x_root;
      event->crossing.y_root = xevent->xcrossing.y_root;
      
      /* Translate the crossing mode into Gdk terms.
       */
      switch (xevent->xcrossing.mode)
	{
	case NotifyNormal:
	  event->crossing.mode = GDK_CROSSING_NORMAL;
	  break;
	case NotifyGrab:
	  event->crossing.mode = GDK_CROSSING_GRAB;
	  break;
	case NotifyUngrab:
	  event->crossing.mode = GDK_CROSSING_UNGRAB;
	  break;
	};
      
      /* Translate the crossing detail into Gdk terms.
       */
      switch (xevent->xcrossing.detail)
	{
	case NotifyInferior:
	  event->crossing.detail = GDK_NOTIFY_INFERIOR;
	  break;
	case NotifyAncestor:
	  event->crossing.detail = GDK_NOTIFY_ANCESTOR;
	  break;
	case NotifyVirtual:
	  event->crossing.detail = GDK_NOTIFY_VIRTUAL;
	  break;
	case NotifyNonlinear:
	  event->crossing.detail = GDK_NOTIFY_NONLINEAR;
	  break;
	case NotifyNonlinearVirtual:
	  event->crossing.detail = GDK_NOTIFY_NONLINEAR_VIRTUAL;
	  break;
	default:
	  event->crossing.detail = GDK_NOTIFY_UNKNOWN;
	  break;
	}
      
      event->crossing.focus = xevent->xcrossing.focus;
      event->crossing.state = xevent->xcrossing.state;
      
      break;
      
    case FocusIn:
    case FocusOut:
      /* We only care about focus events that indicate that _this_
       * window (not a ancestor or child) got or lost the focus
       */
      switch (xevent->xfocus.detail)
	{
	case NotifyAncestor:
	case NotifyInferior:
	case NotifyNonlinear:
	  /* Print debugging info.
	   */
	  GDK_NOTE (EVENTS,
		    g_message ("focus %s:\t\twindow: %ld",
			       (xevent->xany.type == FocusIn) ? "in" : "out",
			       xevent->xfocus.window));
	  
 	  /* gdk_keyboard_grab() causes following events. These events confuse
 	   * the XIM focus, so ignore them.
 	   */
 	  if (xevent->xfocus.mode == NotifyGrab ||
 	      xevent->xfocus.mode == NotifyUngrab)
 	    break;
	  
	  event->focus_change.type = GDK_FOCUS_CHANGE;
	  event->focus_change.window = window;
	  event->focus_change.in = (xevent->xany.type == FocusIn);

	  break;
	default:
	  return_val = FALSE;
	}
      break;
      
    case KeymapNotify:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS,
		g_message ("keymap notify"));

      /* Not currently handled */
      return_val = FALSE;
      break;
      
    case Expose:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS,
		g_message ("expose:\t\twindow: %ld  %d	x,y: %d %d  w,h: %d %d%s",
			   xevent->xexpose.window, xevent->xexpose.count,
			   xevent->xexpose.x, xevent->xexpose.y,
			   xevent->xexpose.width, xevent->xexpose.height,
			   event->any.send_event ? " (send)" : ""));
      gdk_compress_exposures (xevent, window);
      
      event->expose.type = GDK_EXPOSE;
      event->expose.window = window;
      event->expose.area.x = xevent->xexpose.x;
      event->expose.area.y = xevent->xexpose.y;
      event->expose.area.width = xevent->xexpose.width;
      event->expose.area.height = xevent->xexpose.height;
      event->expose.count = xevent->xexpose.count;
      
      break;
      
    case GraphicsExpose:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS,
		g_message ("graphics expose:\tdrawable: %ld",
			   xevent->xgraphicsexpose.drawable));
      
      event->expose.type = GDK_EXPOSE;
      event->expose.window = window;
      event->expose.area.x = xevent->xgraphicsexpose.x;
      event->expose.area.y = xevent->xgraphicsexpose.y;
      event->expose.area.width = xevent->xgraphicsexpose.width;
      event->expose.area.height = xevent->xgraphicsexpose.height;
      event->expose.count = xevent->xexpose.count;
      
      break;
      
    case NoExpose:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS,
		g_message ("no expose:\t\tdrawable: %ld",
			   xevent->xnoexpose.drawable));
      
      event->no_expose.type = GDK_NO_EXPOSE;
      event->no_expose.window = window;
      
      break;
      
    case VisibilityNotify:
      /* Print debugging info.
       */
#ifdef G_ENABLE_DEBUG
      if (gdk_debug_flags & GDK_DEBUG_EVENTS)
	switch (xevent->xvisibility.state)
	  {
	  case VisibilityFullyObscured:
	    g_message ("visibility notify:\twindow: %ld	 none",
		       xevent->xvisibility.window);
	    break;
	  case VisibilityPartiallyObscured:
	    g_message ("visibility notify:\twindow: %ld	 partial",
		       xevent->xvisibility.window);
	    break;
	  case VisibilityUnobscured:
	    g_message ("visibility notify:\twindow: %ld	 full",
		       xevent->xvisibility.window);
	    break;
	  }
#endif /* G_ENABLE_DEBUG */
      
      event->visibility.type = GDK_VISIBILITY_NOTIFY;
      event->visibility.window = window;
      
      switch (xevent->xvisibility.state)
	{
	case VisibilityFullyObscured:
	  event->visibility.state = GDK_VISIBILITY_FULLY_OBSCURED;
	  break;
	  
	case VisibilityPartiallyObscured:
	  event->visibility.state = GDK_VISIBILITY_PARTIAL;
	  break;
	  
	case VisibilityUnobscured:
	  event->visibility.state = GDK_VISIBILITY_UNOBSCURED;
	  break;
	}
      
      break;
      
    case CreateNotify:
      GDK_NOTE (EVENTS,
		g_message ("create notify:\twindow: %ld  x,y: %d %d	w,h: %d %d  b-w: %d  parent: %ld	 ovr: %d",
			   xevent->xcreatewindow.window,
			   xevent->xcreatewindow.x,
			   xevent->xcreatewindow.y,
			   xevent->xcreatewindow.width,
			   xevent->xcreatewindow.height,
			   xevent->xcreatewindow.border_width,
			   xevent->xcreatewindow.parent,
			   xevent->xcreatewindow.override_redirect));
      /* not really handled */
      break;
      
    case DestroyNotify:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS,
		g_message ("destroy notify:\twindow: %ld",
			   xevent->xdestroywindow.window));
      
      event->any.type = GDK_DESTROY;
      event->any.window = window;
      
      return_val = window_private && !window_private->destroyed;
      
      if (window && window_private->xwindow != GDK_ROOT_WINDOW())
	gdk_window_destroy_notify (window);
      break;
      
    case UnmapNotify:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS,
		g_message ("unmap notify:\t\twindow: %ld",
			   xevent->xmap.window));
      
      event->any.type = GDK_UNMAP;
      event->any.window = window;
      
      if (gdk_xgrab_window == window_private)
	gdk_xgrab_window = NULL;
      
      break;
      
    case MapNotify:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS,
		g_message ("map notify:\t\twindow: %ld",
			   xevent->xmap.window));
      
      event->any.type = GDK_MAP;
      event->any.window = window;
      
      break;
      
    case ReparentNotify:
      /* Print debugging info.
       */
      GDK_NOTE (EVENTS,
		g_message ("reparent notify:\twindow: %ld  x,y: %d %d  parent: %ld	ovr: %d",
			   xevent->xreparent.window,
			   xevent->xreparent.x,
			   xevent->xreparent.y,
			   xevent->xreparent.parent,
			   xevent->xreparent.override_redirect));

      /* Not currently handled */
      return_val = FALSE;
      break;
      
    case ConfigureNotify:
      /* Print debugging info.
       */
      while (0 && /* don't reorder ConfigureNotify events at all */
	     XPending (gdk_display) > 0 &&
	     XCheckTypedWindowEvent (gdk_display, xevent->xany.window,
				     ConfigureNotify, xevent))
	{
	  GdkFilterReturn result;
	  
	  GDK_NOTE (EVENTS, 
		    g_message ("configure notify discarded:\twindow: %ld",
			       xevent->xconfigure.window));
	  
	  result = gdk_event_apply_filters (xevent, event,
					    window_private
					    ?window_private->filters
					    :gdk_default_filters);
	  
	  /* If the result is GDK_FILTER_REMOVE, there will be
	   * trouble, but anybody who filtering the Configure events
	   * better know what they are doing
	   */
	  if (result != GDK_FILTER_CONTINUE)
	    {
	      return (result == GDK_FILTER_TRANSLATE) ? TRUE : FALSE;
	    }
	  
	  /*XSync (gdk_display, 0);*/
	}