gdkinput-x11.c

linux下电话本所依赖的一些图形库

/* GDK - The GIMP Drawing Kit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

/*
 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

#include <config.h>
#include "gdkinputprivate.h"
#include "gdkinternals.h"
#include "gdkx.h"
#include "gdk.h"		/* For gdk_error_trap_push()/pop() */
#include "gdkdisplay-x11.h"
#include "gdkalias.h"

#include <string.h>

/* Forward declarations */
static GdkDevicePrivate *gdk_input_device_new            (GdkDisplay       *display,
							  XDeviceInfo      *device,
							  gint              include_core);
static void              gdk_input_translate_coordinates (GdkDevicePrivate *gdkdev,
							  GdkInputWindow   *input_window,
							  gint             *axis_data,
							  gdouble          *axis_out,
							  gdouble          *x_out,
							  gdouble          *y_out);
static guint             gdk_input_translate_state       (guint             state,
							  guint             device_state);

GdkDevicePrivate *
_gdk_input_find_device (GdkDisplay *display,
			guint32     id)
{
  GList *tmp_list = GDK_DISPLAY_X11 (display)->input_devices;
  GdkDevicePrivate *gdkdev;
  while (tmp_list)
    {
      gdkdev = (GdkDevicePrivate *)(tmp_list->data);
      if (gdkdev->deviceid == id)
	return gdkdev;
      tmp_list = tmp_list->next;
    }
  return NULL;
}

void
_gdk_input_get_root_relative_geometry(Display *display, Window w, int *x_ret, int *y_ret,
				      int *width_ret, int *height_ret)
{
  Window root, parent, child;
  Window *children;
  guint nchildren;
  gint x,y;
  guint width, height;
  guint border_widthc, depthc;
   
  XQueryTree (display, w, &root, &parent, &children, &nchildren);
  if (children)
    XFree(children);
  
  XGetGeometry (display, w, &root, &x, &y, &width, &height, &border_widthc, &depthc);

  XTranslateCoordinates (display, w, root, 0, 0, &x, &y, &child);
 
  if (x_ret)
    *x_ret = x;
  if (y_ret)
    *y_ret = y;
  if (width_ret)
    *width_ret = width;
  if (height_ret)
    *height_ret = height;
}

static GdkDevicePrivate *
gdk_input_device_new (GdkDisplay  *display,
		      XDeviceInfo *device, 
		      gint         include_core)
{
  GdkDevicePrivate *gdkdev;
  gchar *tmp_name;
  XAnyClassPtr class;
  gint i,j;

  gdkdev = g_object_new (GDK_TYPE_DEVICE, NULL);

  gdkdev->deviceid = device->id;
  gdkdev->display = display;

  if (device->name[0])
    gdkdev->info.name = g_strdup (device->name);
 else
   /* XFree86 3.2 gives an empty name to the default core devices,
      (fixed in 3.2A) */
   gdkdev->info.name = g_strdup ("pointer");

  gdkdev->info.mode = GDK_MODE_DISABLED;

  /* Try to figure out what kind of device this is by its name -
     could invite a very, very, long list... Lowercase name
     for comparison purposes */

  tmp_name = g_ascii_strdown (gdkdev->info.name, -1);
  
  if (!strcmp (tmp_name, "pointer"))
    gdkdev->info.source = GDK_SOURCE_MOUSE;
  else if (!strcmp (tmp_name, "wacom") ||
	   !strcmp (tmp_name, "pen"))
    gdkdev->info.source = GDK_SOURCE_PEN;
  else if (!strcmp (tmp_name, "eraser"))
    gdkdev->info.source = GDK_SOURCE_ERASER;
  else if (!strcmp (tmp_name, "cursor"))
    gdkdev->info.source = GDK_SOURCE_CURSOR;
  else
    gdkdev->info.source = GDK_SOURCE_PEN;

  g_free(tmp_name);

  gdkdev->xdevice = NULL;

  /* step through the classes */

  gdkdev->info.num_axes = 0;
  gdkdev->info.num_keys = 0;
  gdkdev->info.axes = NULL;
  gdkdev->info.keys = NULL;
  gdkdev->axes = 0;
  gdkdev->info.has_cursor = 0;
  gdkdev->needs_update = FALSE;
  gdkdev->claimed = FALSE;
  gdkdev->button_state = 0;

  class = device->inputclassinfo;
  for (i=0;i<device->num_classes;i++) 
    {
      switch (class->class) {
      case ButtonClass:
	break;
      case KeyClass:
	{
	  XKeyInfo *xki = (XKeyInfo *)class;
	  /* Hack to catch XFree86 3.3.1 bug. Other devices better
	   * not have exactly 25 keys... 
	   */
	  if ((xki->min_keycode == 8) && (xki->max_keycode == 32))
	    {
	      gdkdev->info.num_keys = 32;
	      gdkdev->min_keycode = 1;
	    }
	  else
	    {
	      gdkdev->info.num_keys = xki->max_keycode - xki->min_keycode + 1;
	      gdkdev->min_keycode = xki->min_keycode;
	    }
	  gdkdev->info.keys = g_new (GdkDeviceKey, gdkdev->info.num_keys);

	  for (j=0; j<gdkdev->info.num_keys; j++)
	    {
	      gdkdev->info.keys[j].keyval = 0;
	      gdkdev->info.keys[j].modifiers = 0;
	    }

	  break;
	}
      case ValuatorClass:
	{
	  XValuatorInfo *xvi = (XValuatorInfo *)class;
	  gdkdev->info.num_axes = xvi->num_axes;
	  gdkdev->axes = g_new (GdkAxisInfo, xvi->num_axes);
	  gdkdev->info.axes = g_new0 (GdkDeviceAxis, xvi->num_axes);
	  for (j=0;j<xvi->num_axes;j++)
	    {
	      gdkdev->axes[j].resolution = 
		gdkdev->axes[j].xresolution = xvi->axes[j].resolution;
	      gdkdev->axes[j].min_value =
		gdkdev->axes[j].xmin_value = xvi->axes[j].min_value;
	      gdkdev->axes[j].max_value =
		gdkdev->axes[j].xmax_value = xvi->axes[j].max_value;
	      gdkdev->info.axes[j].use = GDK_AXIS_IGNORE;
	    }
	  j=0;
	  if (j<xvi->num_axes)
	    gdk_device_set_axis_use (&gdkdev->info, j++, GDK_AXIS_X);
	  if (j<xvi->num_axes)
	    gdk_device_set_axis_use (&gdkdev->info, j++, GDK_AXIS_Y);
	  if (j<xvi->num_axes)
	    gdk_device_set_axis_use (&gdkdev->info, j++, GDK_AXIS_PRESSURE);
	  if (j<xvi->num_axes)
	    gdk_device_set_axis_use (&gdkdev->info, j++, GDK_AXIS_XTILT);
	  if (j<xvi->num_axes)
	    gdk_device_set_axis_use (&gdkdev->info, j++, GDK_AXIS_YTILT);
	  if (j<xvi->num_axes)
	    gdk_device_set_axis_use (&gdkdev->info, j++, GDK_AXIS_WHEEL);
		       
	  break;
	}
      }
      class = (XAnyClassPtr)(((char *)class) + class->length);
    }
  /* return NULL if no axes */
  if (!gdkdev->info.num_axes || !gdkdev->axes ||
      (!include_core && device->use == IsXPointer))
    goto error;

  if (device->use != IsXPointer)
    {
      gdk_error_trap_push ();
      gdkdev->xdevice = XOpenDevice (GDK_DISPLAY_XDISPLAY (display),
				     gdkdev->deviceid);

      /* return NULL if device is not ready */
      if (gdk_error_trap_pop ())
	goto error;
    }

  gdkdev->buttonpress_type = 0;
  gdkdev->buttonrelease_type = 0;
  gdkdev->keypress_type = 0;
  gdkdev->keyrelease_type = 0;
  gdkdev->motionnotify_type = 0;
  gdkdev->proximityin_type = 0;
  gdkdev->proximityout_type = 0;
  gdkdev->changenotify_type = 0;

  return gdkdev;

 error:

  g_free (gdkdev->info.name);
  if (gdkdev->axes)
    g_free (gdkdev->axes);
  if (gdkdev->info.keys)
    g_free (gdkdev->info.keys);
  if (gdkdev->info.axes)
    g_free (gdkdev->info.axes);
  g_object_unref (gdkdev);
  
  return NULL;
}

void
_gdk_input_common_find_events(GdkWindow *window,
			      GdkDevicePrivate *gdkdev,
			      gint mask,
			      XEventClass *classes,
			      int *num_classes)
{
  gint i;
  XEventClass class;
  
  i = 0;
  if (mask & GDK_BUTTON_PRESS_MASK)
    {
      DeviceButtonPress (gdkdev->xdevice, gdkdev->buttonpress_type,
			     class);
      if (class != 0)
	  classes[i++] = class;
      DeviceButtonPressGrab (gdkdev->xdevice, 0, class);
      if (class != 0)
	  classes[i++] = class;
    }
  if (mask & GDK_BUTTON_RELEASE_MASK)
    {
      DeviceButtonRelease (gdkdev->xdevice, gdkdev->buttonrelease_type,
			   class);
      if (class != 0)
	  classes[i++] = class;
    }
  if (mask & GDK_POINTER_MOTION_MASK)
    {
      DeviceMotionNotify  (gdkdev->xdevice, gdkdev->motionnotify_type, class);
      if (class != 0)
	  classes[i++] = class;
    }
  else
    if (mask & (GDK_BUTTON1_MOTION_MASK | GDK_BUTTON2_MOTION_MASK |
		GDK_BUTTON3_MOTION_MASK | GDK_BUTTON_MOTION_MASK |
		GDK_POINTER_MOTION_HINT_MASK))
      {
	/* Make sure gdkdev->motionnotify_type is set */
	DeviceMotionNotify  (gdkdev->xdevice, gdkdev->motionnotify_type, class);
      }
  if (mask & GDK_BUTTON1_MOTION_MASK)
    {
      DeviceButton1Motion  (gdkdev->xdevice, 0, class);
      if (class != 0)
	  classes[i++] = class;
    }
  if (mask & GDK_BUTTON2_MOTION_MASK)
    {
      DeviceButton2Motion  (gdkdev->xdevice, 0, class);
      if (class != 0)
	  classes[i++] = class;
    }
  if (mask & GDK_BUTTON3_MOTION_MASK)
    {
      DeviceButton3Motion  (gdkdev->xdevice, 0, class);
      if (class != 0)
	  classes[i++] = class;
    }
  if (mask & GDK_BUTTON_MOTION_MASK)
    {
      DeviceButtonMotion  (gdkdev->xdevice, 0, class);
      if (class != 0)
	  classes[i++] = class;
    }
  if (mask & GDK_POINTER_MOTION_HINT_MASK)
    {
      /* We'll get into trouble if the macros change, but at least we'll
	 know about it, and we avoid warnings now */
      DevicePointerMotionHint (gdkdev->xdevice, 0, class);
      if (class != 0)
	  classes[i++] = class;
    }
  if (mask & GDK_KEY_PRESS_MASK)
    {
      DeviceKeyPress (gdkdev->xdevice, gdkdev->keypress_type, class);
      if (class != 0)
	  classes[i++] = class;
    }
  if (mask & GDK_KEY_RELEASE_MASK)
    {
      DeviceKeyRelease (gdkdev->xdevice, gdkdev->keyrelease_type, class);
      if (class != 0)
	  classes[i++] = class;
    }
  if (mask & GDK_PROXIMITY_IN_MASK)
    {
      ProximityIn   (gdkdev->xdevice, gdkdev->proximityin_type, class);
      if (class != 0)
	  classes[i++] = class;
    }
  if (mask & GDK_PROXIMITY_OUT_MASK)
    {
      ProximityOut  (gdkdev->xdevice, gdkdev->proximityout_type, class);
      if (class != 0)
	  classes[i++] = class;
    }

  *num_classes = i;
}

void
_gdk_input_common_select_events(GdkWindow *window,
				GdkDevicePrivate *gdkdev)
{
  XEventClass classes[GDK_MAX_DEVICE_CLASSES];
  gint num_classes;

  if (gdkdev->info.mode == GDK_MODE_DISABLED)
    _gdk_input_common_find_events(window, gdkdev, 0, classes, &num_classes);
  else
    _gdk_input_common_find_events(window, gdkdev, 
				  ((GdkWindowObject *)window)->extension_events,
				  classes, &num_classes);
  
  XSelectExtensionEvent (GDK_WINDOW_XDISPLAY (window),
			 GDK_WINDOW_XWINDOW (window),
			 classes, num_classes);
}

gint 
_gdk_input_common_init (GdkDisplay *display,
			gint        include_core)
{
  XDeviceInfo   *devices;
  int num_devices, loop;
  int ignore, event_base;
  GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);

  /* Init XInput extension */

  display_x11->input_devices = NULL;
  if (XQueryExtension (display_x11->xdisplay, "XInputExtension",
		       &ignore, &event_base, &ignore))
    {
      gdk_x11_register_standard_event_type (display,
					    event_base, 15 /* Number of events */);

      devices = XListInputDevices(display_x11->xdisplay, &num_devices);
  
      for(loop=0; loop<num_devices; loop++)
	{
	  GdkDevicePrivate *gdkdev = gdk_input_device_new(display,
							  &devices[loop],
							  include_core);
	  if (gdkdev)
	    display_x11->input_devices = g_list_append(display_x11->input_devices, gdkdev);
	}
      XFreeDeviceList(devices);
    }

  display_x11->input_devices = g_list_append (display_x11->input_devices, display->core_pointer);

  return TRUE;
}

static void
gdk_input_translate_coordinates (GdkDevicePrivate *gdkdev,
				 GdkInputWindow   *input_window,