2002-04-25 22:29:14 +00:00
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/*
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* gdkscreen.c
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*
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* Copyright 2001 Sun Microsystems Inc.
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*
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* Erwann Chenede <erwann.chenede@sun.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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2012-02-27 13:01:10 +00:00
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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2002-04-25 22:29:14 +00:00
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*/
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2008-06-22 14:28:52 +00:00
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#include "config.h"
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2010-10-15 02:05:51 +00:00
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2012-10-05 14:46:36 +00:00
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#include "gdkinternals.h"
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2010-12-11 05:14:53 +00:00
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#include "gdkscreenprivate.h"
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2010-10-15 02:05:51 +00:00
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#include "gdkrectangle.h"
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#include "gdkwindow.h"
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2005-08-26 18:49:52 +00:00
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#include "gdkintl.h"
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2010-07-09 00:34:45 +00:00
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2002-04-25 22:29:14 +00:00
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2010-11-15 02:51:30 +00:00
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/**
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* SECTION:gdkscreen
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* @Short_description: Object representing a physical screen
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* @Title: GdkScreen
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*
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2011-02-09 06:32:24 +00:00
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* #GdkScreen objects are the GDK representation of the screen on
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* which windows can be displayed and on which the pointer moves.
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* X originally identified screens with physical screens, but
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* nowadays it is more common to have a single #GdkScreen which
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* combines several physical monitors (see gdk_screen_get_n_monitors()).
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2010-11-15 02:51:30 +00:00
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*
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2011-02-09 06:32:24 +00:00
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* GdkScreen is used throughout GDK and GTK+ to specify which screen
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* the top level windows are to be displayed on. it is also used to
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* query the screen specification and default settings such as
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* the default visual (gdk_screen_get_system_visual()), the dimensions
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* of the physical monitors (gdk_screen_get_monitor_geometry()), etc.
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2010-11-15 02:51:30 +00:00
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*/
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2005-08-26 18:49:52 +00:00
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static void gdk_screen_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gdk_screen_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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enum
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{
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PROP_0,
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PROP_RESOLUTION
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};
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2002-10-04 15:58:19 +00:00
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enum
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{
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SIZE_CHANGED,
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2007-12-13 18:27:05 +00:00
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MONITORS_CHANGED,
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2002-10-04 15:58:19 +00:00
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0 };
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2006-05-14 03:58:06 +00:00
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G_DEFINE_TYPE (GdkScreen, gdk_screen, G_TYPE_OBJECT)
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2002-04-25 22:29:14 +00:00
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2002-10-04 16:08:19 +00:00
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static void
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gdk_screen_class_init (GdkScreenClass *klass)
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2002-10-04 15:58:19 +00:00
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{
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2004-02-18 00:59:14 +00:00
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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2005-08-26 18:49:52 +00:00
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object_class->set_property = gdk_screen_set_property;
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object_class->get_property = gdk_screen_get_property;
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2016-04-02 14:18:16 +00:00
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2005-08-26 18:49:52 +00:00
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g_object_class_install_property (object_class,
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PROP_RESOLUTION,
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g_param_spec_double ("resolution",
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P_("Font resolution"),
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P_("The resolution for fonts on the screen"),
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2014-07-04 06:01:53 +00:00
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-1.0,
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10000.0,
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2005-08-26 18:49:52 +00:00
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-1.0,
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2005-09-01 05:11:46 +00:00
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G_PARAM_READWRITE|G_PARAM_STATIC_NAME|
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G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB));
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2005-08-26 18:49:52 +00:00
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2007-12-13 18:27:05 +00:00
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/**
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* GdkScreen::monitors-changed:
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* @screen: the object on which the signal is emitted
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*
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2008-08-11 09:15:37 +00:00
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* The ::monitors-changed signal is emitted when the number, size
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2007-12-13 18:27:05 +00:00
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* or position of the monitors attached to the screen change.
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*
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2009-10-24 10:26:46 +00:00
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* Only for X11 and OS X for now. A future implementation for Win32
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* may be a possibility.
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2007-12-13 18:27:05 +00:00
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*
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* Since: 2.14
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*/
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signals[MONITORS_CHANGED] =
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2008-08-11 09:15:37 +00:00
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g_signal_new (g_intern_static_string ("monitors-changed"),
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2007-12-13 18:27:05 +00:00
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G_OBJECT_CLASS_TYPE (klass),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GdkScreenClass, monitors_changed),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE,
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0);
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2002-10-04 15:58:19 +00:00
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}
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2005-08-24 03:29:06 +00:00
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static void
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gdk_screen_init (GdkScreen *screen)
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{
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2008-10-21 21:42:39 +00:00
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screen->resolution = -1.;
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2005-08-24 03:29:06 +00:00
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}
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2002-04-25 22:29:14 +00:00
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void
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Start implementing display/screen closing scheme; keep a flag for whether
Thu Aug 1 11:26:03 2002 Owen Taylor <otaylor@redhat.com>
* gdk/gdkdisplay.[ch] gdk/gdkscreen.[ch] gdkinternals.h:
Start implementing display/screen closing scheme; keep a
flag for whether displays and screens are closed,
call g_object_run_dispose(). Remove public gdk_screen_close().
* gdk/x11/gdkdisplay-x11.c gdk/x11/gdkscreen-x11.c: Add
dispose() methods; move appropriate parts of the finalize
there.
* gdk/x11/gdkcolor-x11.c gdk/x11/gdkimage-x11.c
gdk/x11/gdkmain-x11.c gdk/x11/gdkpango-x11.c
gdk/x11/gdkpixmap-x11.c gdk/x11/gdkproperty-x11.c
gdk/x11/gdkselection-x11.c gdk/x11/gdkwindow-x11.c:
Start of making everything correctly ignore operations
when a display has been closed.
* gdk/x11/gdkwindow-x11.c (gdk_window_get_decorations):
Handle decorations == NULL.
* gdk/x11/gdkcolor-x11.c (gdk_colormap_remove):
Remove unnecessary hash table creation.
* gdk/x11/gdkinput.c gdk/x11/gdkinput-x11.c gdk/win32/gdkinput.c
Fix up gdk_device_get_history - handle events, n_events == NULL,
etc.
* gdk/x11/gdkproperty-x11.c (gdk_property_get):
Handle failure better.
* gdk/x11/gdkselection-x11.c (gdk_selection_property_get):
Handle failure better, handle data == NULL, move docs
here, remove an excess round trip by asking for
all selection data at once.
* gdk/gdkselection.c gdk/win32/{x11,win32}/gdkselection-{x11,win32}.c
gdk/{x11,win32}/gdkmain-{x11,win32}.c gdk/gdkdisplay.c: Move
gdk_text_property_to_text_list(), gdk_string_to_compound_text(),
gdk_display_set_sm_client_id() to display-independent part of GDK.
* gdk/Makefile.am (gdk_c_sources): Sort gdkdisplay/screen.[ch]
into the right place.
2002-08-01 15:28:40 +00:00
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_gdk_screen_close (GdkScreen *screen)
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2002-04-25 22:29:14 +00:00
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{
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g_return_if_fail (GDK_IS_SCREEN (screen));
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Start implementing display/screen closing scheme; keep a flag for whether
Thu Aug 1 11:26:03 2002 Owen Taylor <otaylor@redhat.com>
* gdk/gdkdisplay.[ch] gdk/gdkscreen.[ch] gdkinternals.h:
Start implementing display/screen closing scheme; keep a
flag for whether displays and screens are closed,
call g_object_run_dispose(). Remove public gdk_screen_close().
* gdk/x11/gdkdisplay-x11.c gdk/x11/gdkscreen-x11.c: Add
dispose() methods; move appropriate parts of the finalize
there.
* gdk/x11/gdkcolor-x11.c gdk/x11/gdkimage-x11.c
gdk/x11/gdkmain-x11.c gdk/x11/gdkpango-x11.c
gdk/x11/gdkpixmap-x11.c gdk/x11/gdkproperty-x11.c
gdk/x11/gdkselection-x11.c gdk/x11/gdkwindow-x11.c:
Start of making everything correctly ignore operations
when a display has been closed.
* gdk/x11/gdkwindow-x11.c (gdk_window_get_decorations):
Handle decorations == NULL.
* gdk/x11/gdkcolor-x11.c (gdk_colormap_remove):
Remove unnecessary hash table creation.
* gdk/x11/gdkinput.c gdk/x11/gdkinput-x11.c gdk/win32/gdkinput.c
Fix up gdk_device_get_history - handle events, n_events == NULL,
etc.
* gdk/x11/gdkproperty-x11.c (gdk_property_get):
Handle failure better.
* gdk/x11/gdkselection-x11.c (gdk_selection_property_get):
Handle failure better, handle data == NULL, move docs
here, remove an excess round trip by asking for
all selection data at once.
* gdk/gdkselection.c gdk/win32/{x11,win32}/gdkselection-{x11,win32}.c
gdk/{x11,win32}/gdkmain-{x11,win32}.c gdk/gdkdisplay.c: Move
gdk_text_property_to_text_list(), gdk_string_to_compound_text(),
gdk_display_set_sm_client_id() to display-independent part of GDK.
* gdk/Makefile.am (gdk_c_sources): Sort gdkdisplay/screen.[ch]
into the right place.
2002-08-01 15:28:40 +00:00
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if (!screen->closed)
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{
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screen->closed = TRUE;
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g_object_run_dispose (G_OBJECT (screen));
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}
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2002-04-25 22:29:14 +00:00
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}
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2005-08-24 03:29:06 +00:00
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/**
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2005-08-26 18:49:52 +00:00
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* gdk_screen_set_resolution:
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2005-08-24 03:29:06 +00:00
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* @screen: a #GdkScreen
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2014-02-07 18:32:47 +00:00
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* @dpi: the resolution in “dots per inch”. (Physical inches aren’t actually
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2005-08-24 03:29:06 +00:00
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* involved; the terminology is conventional.)
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* Sets the resolution for font handling on the screen. This is a
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* scale factor between points specified in a #PangoFontDescription
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* and cairo units. The default value is 96, meaning that a 10 point
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* font will be 13 units high. (10 * 96. / 72. = 13.3).
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*
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2005-08-26 18:49:52 +00:00
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* Since: 2.10
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2005-08-24 03:29:06 +00:00
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**/
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void
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2005-08-26 18:49:52 +00:00
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gdk_screen_set_resolution (GdkScreen *screen,
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gdouble dpi)
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2005-08-24 03:29:06 +00:00
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{
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2008-10-21 21:42:39 +00:00
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g_return_if_fail (GDK_IS_SCREEN (screen));
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2005-08-24 03:29:06 +00:00
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2014-07-11 20:42:38 +00:00
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if (dpi < 0)
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dpi = -1.0;
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screen->resolution_set = TRUE;
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if (screen->resolution != dpi)
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{
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screen->resolution = dpi;
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g_object_notify (G_OBJECT (screen), "resolution");
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}
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}
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/* Just like gdk_screen_set_resolution(), but doesn't change
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* screen->resolution. This is us to allow us to distinguish
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* resolution changes that the backend picks up from resolution
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* changes made through the public API - perhaps using
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* g_object_set(<GtkSetting>, "gtk-xft-dpi", ...);
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*/
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void
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_gdk_screen_set_resolution (GdkScreen *screen,
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gdouble dpi)
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{
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g_return_if_fail (GDK_IS_SCREEN (screen));
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2008-10-21 21:42:39 +00:00
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if (dpi < 0)
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dpi = -1.0;
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2005-08-26 18:49:52 +00:00
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2008-10-21 21:42:39 +00:00
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if (screen->resolution != dpi)
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{
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screen->resolution = dpi;
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2005-08-26 18:49:52 +00:00
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2008-10-21 21:42:39 +00:00
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g_object_notify (G_OBJECT (screen), "resolution");
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}
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2005-08-24 03:29:06 +00:00
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}
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/**
|
2005-08-26 18:49:52 +00:00
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* gdk_screen_get_resolution:
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2005-08-24 03:29:06 +00:00
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* @screen: a #GdkScreen
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*
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* Gets the resolution for font handling on the screen; see
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2005-08-26 18:49:52 +00:00
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* gdk_screen_set_resolution() for full details.
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2005-08-24 03:29:06 +00:00
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*
|
2014-02-19 23:49:43 +00:00
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* Returns: the current resolution, or -1 if no resolution
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2005-08-24 03:29:06 +00:00
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* has been set.
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2005-08-26 18:49:52 +00:00
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*
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* Since: 2.10
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2005-08-24 03:29:06 +00:00
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**/
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gdouble
|
2005-08-26 18:49:52 +00:00
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gdk_screen_get_resolution (GdkScreen *screen)
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2005-08-24 03:29:06 +00:00
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{
|
2008-10-21 21:42:39 +00:00
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g_return_val_if_fail (GDK_IS_SCREEN (screen), -1.0);
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2005-08-24 03:29:06 +00:00
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2008-10-21 21:42:39 +00:00
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return screen->resolution;
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2005-08-24 03:29:06 +00:00
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}
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2005-08-26 18:49:52 +00:00
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static void
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gdk_screen_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GdkScreen *screen = GDK_SCREEN (object);
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switch (prop_id)
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{
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case PROP_RESOLUTION:
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g_value_set_double (value, gdk_screen_get_resolution (screen));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gdk_screen_set_property (GObject *object,
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guint prop_id,
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|
|
const GValue *value,
|
|
|
|
|
GParamSpec *pspec)
|
|
|
|
|
{
|
|
|
|
|
GdkScreen *screen = GDK_SCREEN (object);
|
|
|
|
|
|
|
|
|
|
switch (prop_id)
|
|
|
|
|
{
|
|
|
|
|
case PROP_RESOLUTION:
|
|
|
|
|
gdk_screen_set_resolution (screen, g_value_get_double (value));
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
2010-12-06 21:05:13 +00:00
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* gdk_screen_get_display:
|
|
|
|
|
* @screen: a #GdkScreen
|
|
|
|
|
*
|
|
|
|
|
* Gets the display to which the @screen belongs.
|
|
|
|
|
*
|
|
|
|
|
* Returns: (transfer none): the display to which @screen belongs
|
|
|
|
|
*
|
|
|
|
|
* Since: 2.2
|
|
|
|
|
**/
|
|
|
|
|
GdkDisplay *
|
|
|
|
|
gdk_screen_get_display (GdkScreen *screen)
|
|
|
|
|
{
|
2012-02-21 16:19:35 +00:00
|
|
|
|
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
|
|
|
|
|
|
|
|
|
|
return GDK_SCREEN_GET_CLASS (screen)->get_display (screen);
|
2010-12-06 21:05:13 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* gdk_screen_get_root_window:
|
|
|
|
|
* @screen: a #GdkScreen
|
|
|
|
|
*
|
|
|
|
|
* Gets the root window of @screen.
|
|
|
|
|
*
|
|
|
|
|
* Returns: (transfer none): the root window
|
|
|
|
|
*
|
|
|
|
|
* Since: 2.2
|
|
|
|
|
**/
|
|
|
|
|
GdkWindow *
|
|
|
|
|
gdk_screen_get_root_window (GdkScreen *screen)
|
|
|
|
|
{
|
2012-02-21 16:19:35 +00:00
|
|
|
|
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
|
|
|
|
|
|
|
|
|
|
return GDK_SCREEN_GET_CLASS (screen)->get_root_window (screen);
|
2010-12-06 21:05:13 +00:00
|
|
|
|
}
|
|
|
|
|
|
2010-12-06 22:19:58 +00:00
|
|
|
|
/**
|
|
|
|
|
* gdk_screen_list_visuals:
|
|
|
|
|
* @screen: the relevant #GdkScreen.
|
|
|
|
|
*
|
|
|
|
|
* Lists the available visuals for the specified @screen.
|
|
|
|
|
* A visual describes a hardware image data format.
|
|
|
|
|
* For example, a visual might support 24-bit color, or 8-bit color,
|
|
|
|
|
* and might expect pixels to be in a certain format.
|
|
|
|
|
*
|
2014-02-07 18:37:09 +00:00
|
|
|
|
* Call g_list_free() on the return value when you’re finished with it.
|
2010-12-06 22:19:58 +00:00
|
|
|
|
*
|
2014-02-19 23:49:43 +00:00
|
|
|
|
* Returns: (transfer container) (element-type GdkVisual):
|
2010-12-06 22:19:58 +00:00
|
|
|
|
* a list of visuals; the list must be freed, but not its contents
|
|
|
|
|
*
|
|
|
|
|
* Since: 2.2
|
|
|
|
|
**/
|
|
|
|
|
GList *
|
|
|
|
|
gdk_screen_list_visuals (GdkScreen *screen)
|
|
|
|
|
{
|
2012-02-21 16:19:35 +00:00
|
|
|
|
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
|
|
|
|
|
|
|
|
|
|
return GDK_SCREEN_GET_CLASS (screen)->list_visuals (screen);
|
2010-12-06 22:19:58 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* gdk_screen_get_system_visual:
|
|
|
|
|
* @screen: a #GdkScreen.
|
|
|
|
|
*
|
2014-02-07 18:01:26 +00:00
|
|
|
|
* Get the system’s default visual for @screen.
|
2010-12-06 22:19:58 +00:00
|
|
|
|
* This is the visual for the root window of the display.
|
|
|
|
|
* The return value should not be freed.
|
|
|
|
|
*
|
2014-02-19 23:49:43 +00:00
|
|
|
|
* Returns: (transfer none): the system visual
|
2010-12-06 22:19:58 +00:00
|
|
|
|
*
|
|
|
|
|
* Since: 2.2
|
|
|
|
|
**/
|
|
|
|
|
GdkVisual *
|
|
|
|
|
gdk_screen_get_system_visual (GdkScreen * screen)
|
|
|
|
|
{
|
2012-02-21 16:19:35 +00:00
|
|
|
|
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
|
|
|
|
|
|
|
|
|
|
return GDK_SCREEN_GET_CLASS (screen)->get_system_visual (screen);
|
2010-12-06 22:19:58 +00:00
|
|
|
|
}
|
|
|
|
|
|
2010-12-06 21:05:13 +00:00
|
|
|
|
/**
|
|
|
|
|
* gdk_screen_get_rgba_visual:
|
|
|
|
|
* @screen: a #GdkScreen
|
|
|
|
|
*
|
|
|
|
|
* Gets a visual to use for creating windows with an alpha channel.
|
|
|
|
|
* The windowing system on which GTK+ is running
|
|
|
|
|
* may not support this capability, in which case %NULL will
|
|
|
|
|
* be returned. Even if a non-%NULL value is returned, its
|
2014-02-07 18:32:47 +00:00
|
|
|
|
* possible that the window’s alpha channel won’t be honored
|
2010-12-06 21:05:13 +00:00
|
|
|
|
* when displaying the window on the screen: in particular, for
|
|
|
|
|
* X an appropriate windowing manager and compositing manager
|
|
|
|
|
* must be running to provide appropriate display.
|
|
|
|
|
*
|
|
|
|
|
* This functionality is not implemented in the Windows backend.
|
|
|
|
|
*
|
|
|
|
|
* For setting an overall opacity for a top-level window, see
|
|
|
|
|
* gdk_window_set_opacity().
|
|
|
|
|
*
|
2014-05-08 19:55:50 +00:00
|
|
|
|
* Returns: (nullable) (transfer none): a visual to use for windows
|
|
|
|
|
* with an alpha channel or %NULL if the capability is not
|
|
|
|
|
* available.
|
2010-12-06 21:05:13 +00:00
|
|
|
|
*
|
|
|
|
|
* Since: 2.8
|
|
|
|
|
**/
|
|
|
|
|
GdkVisual *
|
|
|
|
|
gdk_screen_get_rgba_visual (GdkScreen *screen)
|
|
|
|
|
{
|
2012-02-21 16:19:35 +00:00
|
|
|
|
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
|
|
|
|
|
|
|
|
|
|
return GDK_SCREEN_GET_CLASS (screen)->get_rgba_visual (screen);
|
2010-12-06 21:05:13 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* gdk_screen_get_setting:
|
|
|
|
|
* @screen: the #GdkScreen where the setting is located
|
|
|
|
|
* @name: the name of the setting
|
|
|
|
|
* @value: location to store the value of the setting
|
|
|
|
|
*
|
|
|
|
|
* Retrieves a desktop-wide setting such as double-click time
|
|
|
|
|
* for the #GdkScreen @screen.
|
|
|
|
|
*
|
|
|
|
|
* FIXME needs a list of valid settings here, or a link to
|
|
|
|
|
* more information.
|
|
|
|
|
*
|
|
|
|
|
* Returns: %TRUE if the setting existed and a value was stored
|
|
|
|
|
* in @value, %FALSE otherwise.
|
|
|
|
|
*
|
|
|
|
|
* Since: 2.2
|
|
|
|
|
**/
|
|
|
|
|
gboolean
|
|
|
|
|
gdk_screen_get_setting (GdkScreen *screen,
|
|
|
|
|
const gchar *name,
|
|
|
|
|
GValue *value)
|
|
|
|
|
{
|
2012-02-21 16:19:35 +00:00
|
|
|
|
g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
|
|
|
|
|
g_return_val_if_fail (name != NULL, FALSE);
|
|
|
|
|
g_return_val_if_fail (value != NULL, FALSE);
|
|
|
|
|
|
|
|
|
|
return GDK_SCREEN_GET_CLASS (screen)->get_setting (screen, name, value);
|
2010-12-06 21:05:13 +00:00
|
|
|
|
}
|