gdkinput-win32.c

linux下电话本所依赖的一些图形库

		       * we convert to x and y tilt in the -1000..1000 range
		       */
		      gdkdev->axes[k].xresolution =
			gdkdev->axes[k].resolution = 1000;
		      gdkdev->axes[k].xmin_value =
			gdkdev->axes[k].min_value = -1000;
		      gdkdev->axes[k].xmax_value =
			gdkdev->axes[k].max_value = 1000;
		      gdkdev->info.axes[k].use = axis;
		      gdkdev->info.axes[k].min = -1000;
		      gdkdev->info.axes[k].max = 1000;
		      k++;
		    }
		}
	      gdkdev->info.num_keys = 0;
	      gdkdev->info.keys = NULL;
	      GDK_NOTE (INPUT,
			g_print ("device: (%d) %s axes: %d\n",
				 cursorix,
				 gdkdev->info.name,
				 gdkdev->info.num_axes));
	      for (i = 0; i < gdkdev->info.num_axes; i++)
		GDK_NOTE (INPUT,
			  g_print ("...axis %d: %d--%d@%d (%d--%d@%d)\n",
				   i,
				   gdkdev->axes[i].xmin_value, 
				   gdkdev->axes[i].xmax_value, 
				   gdkdev->axes[i].xresolution, 
				   gdkdev->axes[i].min_value, 
				   gdkdev->axes[i].max_value, 
				   gdkdev->axes[i].resolution));
	      _gdk_input_devices = g_list_append (_gdk_input_devices,
						 gdkdev);
	    }
	}
    }
}

static void
decode_tilt (gint   *axis_data,
	     AXIS   *axes,
	     PACKET *packet)
{
  /* As I don't have a tilt-sensing tablet,
   * I cannot test this code.
   */
  
  double az, el;

  az = TWOPI * packet->pkOrientation.orAzimuth /
    (axes[0].axResolution / 65536.);
  el = TWOPI * packet->pkOrientation.orAltitude /
    (axes[1].axResolution / 65536.);
  
  /* X tilt */
  axis_data[0] = cos (az) * cos (el) * 1000;
  /* Y tilt */
  axis_data[1] = sin (az) * cos (el) * 1000;
}

#endif /* HAVE_WINTAB */

static void
gdk_input_translate_coordinates (GdkDevicePrivate *gdkdev,
				 GdkInputWindow   *input_window,
				 gint             *axis_data,
				 gdouble          *axis_out,
				 gdouble          *x_out,
				 gdouble          *y_out)
{
  GdkWindowImplWin32 *impl, *root_impl;

  int i;
  int x_axis = 0;
  int y_axis = 0;

  double device_width, device_height;
  double x_offset, y_offset, x_scale, y_scale;

  impl = GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (input_window->window)->impl);

  for (i=0; i<gdkdev->info.num_axes; i++)
    {
      switch (gdkdev->info.axes[i].use)
	{
	case GDK_AXIS_X:
	  x_axis = i;
	  break;
	case GDK_AXIS_Y:
	  y_axis = i;
	  break;
	default:
	  break;
	}
    }
  
  device_width = gdkdev->axes[x_axis].max_value - 
		   gdkdev->axes[x_axis].min_value;
  device_height = gdkdev->axes[y_axis].max_value - 
                    gdkdev->axes[y_axis].min_value;

  if (gdkdev->info.mode == GDK_MODE_SCREEN) 
    {
      root_impl = GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (_gdk_parent_root)->impl);
      x_scale = root_impl->width / device_width;
      y_scale = root_impl->height / device_height;

      x_offset = - input_window->root_x;
      y_offset = - input_window->root_y;
    }
  else				/* GDK_MODE_WINDOW */
    {
      double device_aspect = (device_height*gdkdev->axes[y_axis].resolution) /
	(device_width*gdkdev->axes[x_axis].resolution);

      if (device_aspect * impl->width >= impl->height)
	{
	  /* device taller than window */
	  x_scale = impl->width / device_width;
	  y_scale = (x_scale * gdkdev->axes[x_axis].resolution)
	    / gdkdev->axes[y_axis].resolution;

	  x_offset = 0;
	  y_offset = -(device_height * y_scale - 
			       impl->height)/2;
	}
      else
	{
	  /* window taller than device */
	  y_scale = impl->height / device_height;
	  x_scale = (y_scale * gdkdev->axes[y_axis].resolution)
	    / gdkdev->axes[x_axis].resolution;

	  y_offset = 0;
	  x_offset = - (device_width * x_scale - impl->width)/2;
	}
    }

  for (i=0; i<gdkdev->info.num_axes; i++)
    {
      switch (gdkdev->info.axes[i].use)
	{
	case GDK_AXIS_X:
	  axis_out[i] = x_offset + x_scale*axis_data[x_axis];
	  if (x_out)
	    *x_out = axis_out[i];
	  break;
	case GDK_AXIS_Y:
	  axis_out[i] = y_offset + y_scale*axis_data[y_axis];
	  if (y_out)
	    *y_out = axis_out[i];
	  break;
	default:
	  axis_out[i] =
	    (gdkdev->info.axes[i].max * (axis_data[i] - gdkdev->axes[i].min_value) +
	     gdkdev->info.axes[i].min * (gdkdev->axes[i].max_value - axis_data[i])) /
	    (gdkdev->axes[i].max_value - gdkdev->axes[i].min_value);
	  break;
	}
    }
}

static void
gdk_input_get_root_relative_geometry (HWND w,
				      int  *x_ret,
				      int  *y_ret)
{
  RECT rect;

  GetWindowRect (w, &rect);

  if (x_ret)
    *x_ret = rect.left + _gdk_offset_x;
  if (y_ret)
    *y_ret = rect.top + _gdk_offset_y;
}

void
_gdk_input_configure_event (GdkWindow         *window)
{
  GdkInputWindow *input_window;
  int root_x, root_y;

  input_window = _gdk_input_window_find (window);
  g_return_if_fail (window != NULL);

  gdk_input_get_root_relative_geometry (GDK_WINDOW_HWND (window),
					&root_x, &root_y);

  input_window->root_x = root_x;
  input_window->root_y = root_y;
}

void 
_gdk_input_enter_event (GdkWindow        *window)
{
  GdkInputWindow *input_window;
  int root_x, root_y;

  input_window = _gdk_input_window_find (window);
  g_return_if_fail (window != NULL);

  gdk_input_get_root_relative_geometry (GDK_WINDOW_HWND (window), &root_x, &root_y);

  input_window->root_x = root_x;
  input_window->root_y = root_y;
}

/*
 * Get the currently active keyboard modifiers (ignoring the mouse buttons)
 * We could use gdk_window_get_pointer but that function does a lot of other
 * expensive things besides getting the modifiers. This code is somewhat based
 * on build_pointer_event_state from gdkevents-win32.c
 */
static guint
get_modifier_key_state (void)
{
  guint state;
  
  state = 0;
  /* High-order bit is up/down, low order bit is toggled/untoggled */
  if (GetKeyState (VK_CONTROL) < 0)
    state |= GDK_CONTROL_MASK;
  if (GetKeyState (VK_SHIFT) < 0)
    state |= GDK_SHIFT_MASK;
  if (GetKeyState (VK_MENU) < 0)
    state |= GDK_MOD1_MASK;
  if (GetKeyState (VK_CAPITAL) & 0x1)
    state |= GDK_LOCK_MASK;

  return state;
}

#ifdef HAVE_WINTAB

static guint ignore_core_timer = 0;

static gboolean
ignore_core_timefunc (gpointer data)
{
  /* The delay has passed */
  _gdk_input_ignore_core = FALSE;
  ignore_core_timer = 0;

  return FALSE; /* remove timeout */
}

/*
 * Set or unset the _gdk_input_ignore_core variable that tells GDK
 * to ignore events for the core pointer when the tablet is in proximity
 * The unsetting is delayed slightly so that if a tablet event arrives
 * just after proximity out, it does not cause a core pointer event
 * which e.g. causes GIMP to switch tools.
 */
static void
set_ignore_core (gboolean ignore)
{
  if (ignore)
    {
      _gdk_input_ignore_core = TRUE;
      /* Remove any pending clear */
      if (ignore_core_timer)
        {
	  g_source_remove (ignore_core_timer);
	  ignore_core_timer = 0;
	}
    }
  else
    if (!ignore_core_timer)
      ignore_core_timer = g_timeout_add (PROXIMITY_OUT_DELAY,
					 ignore_core_timefunc, NULL);
}
#endif /* HAVE_WINTAB */

gboolean 
_gdk_input_other_event (GdkEvent  *event,
			MSG       *msg,
			GdkWindow *window)
{
#ifdef HAVE_WINTAB
  GdkDisplay *display;
  GdkWindowObject *obj, *grab_obj;
  GdkInputWindow *input_window;
  GdkDevicePrivate *gdkdev = NULL;
  GdkEventMask masktest;
  guint key_state;
  POINT pt;

  PACKET packet;
  gint k;
  gint x, y;

  if (event->any.window != wintab_window)
    {
      g_warning ("_gdk_input_other_event: not wintab_window?");
      return FALSE;
    }

  window = gdk_window_at_pointer (&x, &y);
  if (window == NULL)
    window = _gdk_parent_root;

  g_object_ref (window);
  display = gdk_drawable_get_display (window);

  GDK_NOTE (EVENTS_OR_INPUT,
	    g_print ("gdk_input_win32_other_event: window=%p (%d,%d)\n",
		     GDK_WINDOW_HWND (window), x, y));
  
  if (msg->message == WT_PACKET)
    {
      if (!WTPacket ((HCTX) msg->lParam, msg->wParam, &packet))
	return FALSE;
    }

  obj = GDK_WINDOW_OBJECT (window);

  switch (msg->message)
    {
    case WT_PACKET:
      /* Don't produce any button or motion events while a window is being
       * moved or resized, see bug #151090. */
      if (_sizemove_in_progress)
	{
	  GDK_NOTE (EVENTS_OR_INPUT, g_print ("...ignored when moving/sizing\n"));
	  return FALSE;
	}
      if (window == _gdk_parent_root && x_grab_window == NULL)
	{
	  GDK_NOTE (EVENTS_OR_INPUT, g_print ("...is root\n"));
	  return FALSE;
	}

      if ((gdkdev = gdk_input_find_dev_from_ctx ((HCTX) msg->lParam,
						 packet.pkCursor)) == NULL)
	return FALSE;

      if (gdkdev->info.mode == GDK_MODE_DISABLED)
	return FALSE;
      
      k = 0;
      if (gdkdev->pktdata & PK_X)
	gdkdev->last_axis_data[k++] = packet.pkX;
      if (gdkdev->pktdata & PK_Y)
	gdkdev->last_axis_data[k++] = packet.pkY;
      if (gdkdev->pktdata & PK_NORMAL_PRESSURE)
	gdkdev->last_axis_data[k++] = packet.pkNormalPressure;
      if (gdkdev->pktdata & PK_ORIENTATION)
	{
	  decode_tilt (gdkdev->last_axis_data + k,
		       gdkdev->orientation_axes, &packet);
	  k += 2;
	}

      g_assert (k == gdkdev->info.num_axes);

      if (HIWORD (packet.pkButtons) != TBN_NONE)
	{
	  /* Gdk buttons are numbered 1.. */
	  event->button.button = 1 + LOWORD (packet.pkButtons);

	  if (HIWORD (packet.pkButtons) == TBN_UP)
	    {
	      event->any.type = GDK_BUTTON_RELEASE;
	      masktest = GDK_BUTTON_RELEASE_MASK;
	      gdkdev->button_state &= ~(1 << LOWORD (packet.pkButtons));
	    }
	  else
	    {
	      event->any.type = GDK_BUTTON_PRESS;
	      masktest = GDK_BUTTON_PRESS_MASK;
	      gdkdev->button_state |= 1 << LOWORD (packet.pkButtons);
	    }
	}
      else
	{
	  event->any.type = GDK_MOTION_NOTIFY;
	  masktest = GDK_POINTER_MOTION_MASK;
	  if (gdkdev->button_state & (1 << 0))
	    masktest |= GDK_BUTTON_MOTION_MASK | GDK_BUTTON1_MOTION_MASK;
	  if (gdkdev->button_state & (1 << 1))
	    masktest |= GDK_BUTTON_MOTION_MASK | GDK_BUTTON2_MOTION_MASK;
	  if (gdkdev->button_state & (1 << 2))
	    masktest |= GDK_BUTTON_MOTION_MASK | GDK_BUTTON3_MOTION_MASK;
	}

      /* See if input is grabbed */
      /* FIXME: x_grab_owner_events should probably be handled somehow */
      if (x_grab_window != NULL)
	{
	  grab_obj = GDK_WINDOW_OBJECT (x_grab_window);
	  if (!GDK_WINDOW_IMPL_WIN32 (grab_obj->impl)->extension_events_selected
	      || !(grab_obj->extension_events & masktest)
	      || !(x_grab_mask && masktest))
	    {
	      GDK_NOTE (EVENTS_OR_INPUT, 
			g_print ("...grabber doesn't want it\n"));
	      return FALSE;
	    }
	  GDK_NOTE (EVENTS_OR_INPUT, g_print ("...to grabber\n"));

	  g_object_ref(x_grab_window);
	  g_object_unref(window);
	  window = x_grab_window;
	  obj = grab_obj;
	}
      /* Now we can check if the window wants the event, and
       * propagate if necessary.
       */
    dijkstra:
      if (!GDK_WINDOW_IMPL_WIN32 (obj->impl)->extension_events_selected
	  || !(obj->extension_events & masktest))
	{
	  GDK_NOTE (EVENTS_OR_INPUT, g_print ("...not selected\n"));

	  if (obj->parent == GDK_WINDOW_OBJECT (_gdk_parent_root))
	    return FALSE;

	  /* It is not good to propagate the extended events up to the parent
	   * if this window wants normal (not extended) motion/button events */
	  if (obj->event_mask & masktest)
	    {
	      GDK_NOTE (EVENTS_OR_INPUT,