gdkscreen-x11.c

linux下电话本所依赖的一些图形库

/*
 * gdkscreen-x11.c
 * 
 * Copyright 2001 Sun Microsystems Inc. 
 *
 * Erwann Chenede <[e-mail]>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library 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.
 */

#include <config.h>

#include <stdlib.h>
#include <string.h>

#include <glib.h>
#include "gdkscreen.h"
#include "gdkscreen-x11.h"
#include "gdkdisplay.h"
#include "gdkdisplay-x11.h"
#include "gdkx.h"
#include "gdkalias.h"

#ifdef HAVE_SOLARIS_XINERAMA
#include <X11/extensions/xinerama.h>
#endif
#ifdef HAVE_XFREE_XINERAMA
#include <X11/extensions/Xinerama.h>
#endif

#ifdef HAVE_RANDR
#include <X11/extensions/Xrandr.h>
#endif

static void         gdk_screen_x11_class_init  (GdkScreenX11Class *klass);
static void         gdk_screen_x11_dispose     (GObject		  *object);
static void         gdk_screen_x11_finalize    (GObject		  *object);
static void	    init_xinerama_support      (GdkScreen	  *screen);
static void	    init_randr_support	       (GdkScreen	  *screen);

enum
{
  WINDOW_MANAGER_CHANGED,
  LAST_SIGNAL
};

static gpointer parent_class = NULL;
static guint signals[LAST_SIGNAL] = { 0 };

GType
_gdk_screen_x11_get_type (void)
{
  static GType object_type = 0;

  if (!object_type)
    {
      static const GTypeInfo object_info =
	{
	  sizeof (GdkScreenX11Class),
	  (GBaseInitFunc) NULL,
	  (GBaseFinalizeFunc) NULL,
	  (GClassInitFunc) gdk_screen_x11_class_init,
	  NULL,			/* class_finalize */
	  NULL,			/* class_data */
	  sizeof (GdkScreenX11),
	  0,			/* n_preallocs */
	  (GInstanceInitFunc) NULL,
	};
      object_type = g_type_register_static (GDK_TYPE_SCREEN,
					    "GdkScreenX11",
					    &object_info, 0);
    }
  return object_type;
}

static void
gdk_screen_x11_class_init (GdkScreenX11Class *klass)
{
  GObjectClass *object_class = G_OBJECT_CLASS (klass);
  
  object_class->dispose = gdk_screen_x11_dispose;
  object_class->finalize = gdk_screen_x11_finalize;

  parent_class = g_type_class_peek_parent (klass);

  signals[WINDOW_MANAGER_CHANGED] =
    g_signal_new ("window_manager_changed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (GdkScreenX11Class, window_manager_changed),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE,
                  0);
}

/**
 * gdk_screen_get_display:
 * @screen: a #GdkScreen
 *
 * Gets the display to which the @screen belongs.
 * 
 * Returns: the display to which @screen belongs
 *
 * Since: 2.2
 **/
GdkDisplay *
gdk_screen_get_display (GdkScreen *screen)
{
  g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);

  return GDK_SCREEN_X11 (screen)->display;
}
/**
 * gdk_screen_get_width:
 * @screen: a #GdkScreen
 *
 * Gets the width of @screen in pixels
 * 
 * Returns: the width of @screen in pixels.
 *
 * Since: 2.2
 **/
gint
gdk_screen_get_width (GdkScreen *screen)
{
  g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);

  return WidthOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
}

/**
 * gdk_screen_get_height:
 * @screen: a #GdkScreen
 *
 * Gets the height of @screen in pixels
 * 
 * Returns: the height of @screen in pixels.
 *
 * Since: 2.2
 **/
gint
gdk_screen_get_height (GdkScreen *screen)
{
  g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);

  return HeightOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
}

/**
 * gdk_screen_get_width_mm:
 * @screen: a #GdkScreen
 *
 * Gets the width of @screen in millimeters. 
 * Note that on some X servers this value will not be correct.
 * 
 * Returns: the width of @screen in millimeters.
 *
 * Since: 2.2
 **/
gint
gdk_screen_get_width_mm (GdkScreen *screen)
{
  g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);  

  return WidthMMOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
}

/**
 * gdk_screen_get_height_mm:
 * @screen: a #GdkScreen
 *
 * Returns the height of @screen in millimeters. 
 * Note that on some X servers this value will not be correct.
 * 
 * Returns: the heigth of @screen in millimeters.
 *
 * Since: 2.2
 **/
gint
gdk_screen_get_height_mm (GdkScreen *screen)
{
  g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);

  return HeightMMOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
}

/**
 * gdk_screen_get_number:
 * @screen: a #GdkScreen
 *
 * Gets the index of @screen among the screens in the display
 * to which it belongs. (See gdk_screen_get_display())
 * 
 * Returns: the index
 *
 * Since: 2.2
 **/
gint
gdk_screen_get_number (GdkScreen *screen)
{
  g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);  
  
  return GDK_SCREEN_X11 (screen)->screen_num;
}

/**
 * gdk_screen_get_root_window:
 * @screen: a #GdkScreen
 *
 * Gets the root window of @screen. 
 * 
 * Returns: the root window
 *
 * Since: 2.2
 **/
GdkWindow *
gdk_screen_get_root_window (GdkScreen *screen)
{
  g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);

  return GDK_SCREEN_X11 (screen)->root_window;
}

/**
 * gdk_screen_get_default_colormap:
 * @screen: a #GdkScreen
 *
 * Gets the default colormap for @screen.
 * 
 * Returns: the default #GdkColormap.
 *
 * Since: 2.2
 **/
GdkColormap *
gdk_screen_get_default_colormap (GdkScreen *screen)
{
  g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);

  return GDK_SCREEN_X11 (screen)->default_colormap;
}

/**
 * gdk_screen_set_default_colormap:
 * @screen: a #GdkScreen
 * @colormap: a #GdkColormap
 *
 * Sets the default @colormap for @screen.
 *
 * Since: 2.2
 **/
void
gdk_screen_set_default_colormap (GdkScreen   *screen,
				 GdkColormap *colormap)
{
  GdkColormap *old_colormap;
  
  g_return_if_fail (GDK_IS_SCREEN (screen));
  g_return_if_fail (GDK_IS_COLORMAP (colormap));

  old_colormap = GDK_SCREEN_X11 (screen)->default_colormap;

  GDK_SCREEN_X11 (screen)->default_colormap = g_object_ref (colormap);
  
  if (old_colormap)
    g_object_unref (old_colormap);
}

static void
gdk_screen_x11_dispose (GObject *object)
{
  GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (object);

  _gdk_x11_events_uninit_screen (GDK_SCREEN (object));

  g_object_unref (screen_x11->default_colormap);
  screen_x11->default_colormap = NULL;
  
  screen_x11->root_window = NULL;

  screen_x11->xdisplay = NULL;
  screen_x11->xscreen = NULL;
  screen_x11->screen_num = -1;
  screen_x11->xroot_window = None;
  screen_x11->wmspec_check_window = None;
  
  G_OBJECT_CLASS (parent_class)->dispose (object);
}

static void
gdk_screen_x11_finalize (GObject *object)
{
  GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (object);
  /* int i; */
  g_object_unref (screen_x11->root_window);

  if (screen_x11->renderer)
    g_object_unref (screen_x11->renderer);
  
  /* Visual Part (Need to implement finalize for Visuals for a clean
   * finalize) */
  /* for (i=0;i<screen_x11->nvisuals;i++)
    g_object_unref (screen_x11->visuals[i]);*/
  g_free (screen_x11->visuals);
  g_hash_table_destroy (screen_x11->visual_hash);

  g_free (screen_x11->window_manager_name);  

  g_hash_table_destroy (screen_x11->colormap_hash);
  /* X settings */
  g_free (screen_x11->xsettings_client);
  g_free (screen_x11->monitors);
  
  G_OBJECT_CLASS (parent_class)->finalize (object);
}

/**
 * gdk_screen_get_n_monitors:
 * @screen: a #GdkScreen.
 *
 * Returns the number of monitors which @screen consists of.
 *
 * Returns: number of monitors which @screen consists of.
 *
 * Since: 2.2
 **/
gint 
gdk_screen_get_n_monitors (GdkScreen *screen)
{
  g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
  
  return GDK_SCREEN_X11 (screen)->num_monitors;
}

/**
 * gdk_screen_get_monitor_geometry:
 * @screen : a #GdkScreen.
 * @monitor_num: the monitor number. 
 * @dest : a #GdkRectangle to be filled with the monitor geometry
 *
 * Retrieves the #GdkRectangle representing the size and position of 
 * the individual monitor within the entire screen area.
 * 
 * Note that the size of the entire screen area can be retrieved via 
 * gdk_screen_get_width() and gdk_screen_get_height().