mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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5b74ee38e8
In 2.x, the !HAVE_XCONVERTCASE fallback of keyval_convert_case() was
implicitly used as implementation for all !X11 backends.
In 3.x, when this function was virtualized in GdkDisplayManager,
this fallback was moved to the X11 backend and the other backends
"equipped" with /* FIXME implement */ implementations of
keyval_convert_case() which don't convert anything.
Move the fallback code back to gdk/ as default implementation
of GdkDisplayManager::keyval_convert_case() and remove its
implementations is all backends but X11. Also remove the
implementation in Wayland which was a plain copy of what
is now the default implementation.
(cherry picked from commit f46c1b76d8)
451 lines
13 KiB
C
451 lines
13 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 2000 Red Hat, Inc.
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gdkconfig.h"
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#include "gdkdisplaymanagerprivate.h"
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#include "gdkinternals.h"
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#include "gdkkeysprivate.h"
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#include "gdkmarshalers.h"
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#include "gdkintl.h"
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#ifdef GDK_WINDOWING_X11
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#include "x11/gdkx.h"
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#endif
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#ifdef GDK_WINDOWING_QUARTZ
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/* We immediately include gdkquartzdisplaymanager.h here instead of
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* gdkquartz.h so that we do not have to enable -xobjective-c for the
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* "generic" GDK source code.
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*/
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#include "quartz/gdkquartzdisplaymanager.h"
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#endif
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#ifdef GDK_WINDOWING_BROADWAY
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#include "broadway/gdkbroadwaydisplaymanager.h"
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#endif
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#ifdef GDK_WINDOWING_WIN32
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#include "win32/gdkwin32.h"
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#endif
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#ifdef GDK_WINDOWING_WAYLAND
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#include "wayland/gdkwayland.h"
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#endif
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/**
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* SECTION:gdkdisplaymanager
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* @Short_description: Maintains a list of all open GdkDisplays
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* @Title: GdkDisplayManager
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*
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* The purpose of the #GdkDisplayManager singleton object is to offer
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* notification when displays appear or disappear or the default display
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* changes.
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*
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* You can use gdk_display_manager_get() to obtain the GdkDisplayManager
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* singleton, but that should be rarely necessary. Typically, initializing
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* GTK+ opens a display that you can work with without ever accessing the
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* GdkDisplayManager.
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*
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* The GDK library can be built with support for multiple backends.
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* The GdkDisplayManager object determines which backend is used
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* at runtime.
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*
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* When writing backend-specific code that is supposed to work with
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* multiple GDK backends, you have to consider both compile time and
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* runtime. At compile time, use the #GDK_WINDOWING_X11, #GDK_WINDOWING_WIN32
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* macros, etc. to find out which backends are present in the GDK library
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* you are building your application against. At runtime, use type-check
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* macros like GDK_IS_X11_DISPLAY() to find out which backend is in use:
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*
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* <example id="backend-specific">
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* <title>Backend-specific code</title>
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* <programlisting>
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* #ifdef GDK_WINDOWING_X11
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* if (GDK_IS_X11_DISPLAY (display))
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* {
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* /* make X11-specific calls here */
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* }
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* else
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* #endif
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* #ifdef GDK_WINDOWING_QUARTZ
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* if (GDK_IS_QUARTZ_DISPLAY (display))
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* {
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* /* make Quartz-specific calls here */
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* }
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* else
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* #endif
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* g_error ("Unsupported GDK backend");
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* </programlisting>
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* </example>
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*/
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enum {
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PROP_0,
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PROP_DEFAULT_DISPLAY
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};
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enum {
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DISPLAY_OPENED,
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LAST_SIGNAL
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};
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static void gdk_display_manager_class_init (GdkDisplayManagerClass *klass);
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static void gdk_display_manager_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_display_manager_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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static guint signals[LAST_SIGNAL] = { 0 };
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G_DEFINE_TYPE (GdkDisplayManager, gdk_display_manager, G_TYPE_OBJECT)
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static void
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gdk_display_manager_class_init (GdkDisplayManagerClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->set_property = gdk_display_manager_set_property;
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object_class->get_property = gdk_display_manager_get_property;
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klass->keyval_convert_case = _gdk_display_manager_real_keyval_convert_case;
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/**
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* GdkDisplayManager::display-opened:
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* @manager: the object on which the signal is emitted
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* @display: the opened display
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*
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* The ::display-opened signal is emitted when a display is opened.
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*
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* Since: 2.2
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*/
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signals[DISPLAY_OPENED] =
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g_signal_new (g_intern_static_string ("display-opened"),
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GdkDisplayManagerClass, display_opened),
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NULL, NULL,
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_gdk_marshal_VOID__OBJECT,
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G_TYPE_NONE,
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1,
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GDK_TYPE_DISPLAY);
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g_object_class_install_property (object_class,
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PROP_DEFAULT_DISPLAY,
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g_param_spec_object ("default-display",
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P_("Default Display"),
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P_("The default display for GDK"),
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GDK_TYPE_DISPLAY,
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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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}
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static void
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gdk_display_manager_init (GdkDisplayManager *manager)
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{
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}
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static void
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gdk_display_manager_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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{
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switch (prop_id)
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{
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case PROP_DEFAULT_DISPLAY:
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gdk_display_manager_set_default_display (GDK_DISPLAY_MANAGER (object),
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g_value_get_object (value));
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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_display_manager_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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switch (prop_id)
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{
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case PROP_DEFAULT_DISPLAY:
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g_value_set_object (value,
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gdk_display_manager_get_default_display (GDK_DISPLAY_MANAGER (object)));
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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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/**
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* gdk_display_manager_get:
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*
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* Gets the singleton #GdkDisplayManager object.
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*
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* When called for the first time, this function consults the
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* <envar>GDK_BACKEND</envar> environment variable to find out which
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* of the supported GDK backends to use (in case GDK has been compiled
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* with multiple backends).
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*
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* Returns: (transfer none): The global #GdkDisplayManager singleton;
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* gdk_parse_args(), gdk_init(), or gdk_init_check() must have
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* been called first.
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*
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* Since: 2.2
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**/
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GdkDisplayManager*
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gdk_display_manager_get (void)
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{
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static GdkDisplayManager *manager = NULL;
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if (!manager)
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{
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const gchar *backend;
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backend = g_getenv ("GDK_BACKEND");
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#ifdef GDK_WINDOWING_QUARTZ
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if (backend == NULL || strcmp (backend, "quartz") == 0)
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manager = g_object_new (gdk_quartz_display_manager_get_type (), NULL);
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else
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#endif
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#ifdef GDK_WINDOWING_WIN32
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if (backend == NULL || strcmp (backend, "win32") == 0)
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manager = g_object_new (gdk_win32_display_manager_get_type (), NULL);
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else
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#endif
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#ifdef GDK_WINDOWING_WAYLAND
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if (backend == NULL || strcmp (backend, "wayland") == 0)
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manager = g_object_new (gdk_wayland_display_manager_get_type (), NULL);
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else
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#endif
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#ifdef GDK_WINDOWING_X11
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if (backend == NULL || strcmp (backend, "x11") == 0)
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manager = g_object_new (gdk_x11_display_manager_get_type (), NULL);
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else
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#endif
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#ifdef GDK_WINDOWING_BROADWAY
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if (backend == NULL || strcmp (backend, "broadway") == 0)
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manager = g_object_new (gdk_broadway_display_manager_get_type (), NULL);
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else
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#endif
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if (backend != NULL)
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g_error ("Unsupported GDK backend: %s", backend);
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else
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g_error ("No GDK backend found");
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}
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return manager;
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}
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/**
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* gdk_display_manager_get_default_display:
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* @manager: a #GdkDisplayManager
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*
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* Gets the default #GdkDisplay.
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*
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* Returns: (transfer none): a #GdkDisplay, or %NULL
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* if there is no default display.
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*
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* Since: 2.2
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*/
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GdkDisplay *
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gdk_display_manager_get_default_display (GdkDisplayManager *manager)
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{
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return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->get_default_display (manager);
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}
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/**
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* gdk_display_get_default:
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*
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* Gets the default #GdkDisplay. This is a convenience
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* function for
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* <literal>gdk_display_manager_get_default_display (gdk_display_manager_get ())</literal>.
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*
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* Returns: (transfer none): a #GdkDisplay, or %NULL if there is no default
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* display.
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*
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* Since: 2.2
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*/
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GdkDisplay *
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gdk_display_get_default (void)
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{
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return gdk_display_manager_get_default_display (gdk_display_manager_get ());
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}
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/**
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* gdk_screen_get_default:
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*
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* Gets the default screen for the default display. (See
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* gdk_display_get_default ()).
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*
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* Returns: (transfer none): a #GdkScreen, or %NULL if there is no default display.
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*
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* Since: 2.2
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*/
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GdkScreen *
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gdk_screen_get_default (void)
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{
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GdkDisplay *default_display;
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default_display = gdk_display_get_default ();
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if (default_display)
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return gdk_display_get_default_screen (default_display);
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else
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return NULL;
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}
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/**
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* gdk_display_manager_set_default_display:
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* @manager: a #GdkDisplayManager
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* @display: a #GdkDisplay
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*
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* Sets @display as the default display.
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*
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* Since: 2.2
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**/
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void
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gdk_display_manager_set_default_display (GdkDisplayManager *manager,
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GdkDisplay *display)
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{
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GDK_DISPLAY_MANAGER_GET_CLASS (manager)->set_default_display (manager, display);
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g_object_notify (G_OBJECT (manager), "default-display");
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}
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/**
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* gdk_display_manager_list_displays:
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* @manager: a #GdkDisplayManager
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*
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* List all currently open displays.
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*
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* Return value: (transfer container) (element-type GdkDisplay): a newly
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* allocated #GSList of #GdkDisplay objects. Free with g_slist_free()
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* when you are done with it.
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*
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* Since: 2.2
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**/
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GSList *
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gdk_display_manager_list_displays (GdkDisplayManager *manager)
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{
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return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->list_displays (manager);
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}
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/**
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* gdk_display_manager_open_display:
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* @manager: a #GdkDisplayManager
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* @name: the name of the display to open
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*
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* Opens a display.
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*
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* Return value: (transfer none): a #GdkDisplay, or %NULL
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* if the display could not be opened
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*
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* Since: 3.0
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*/
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GdkDisplay *
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gdk_display_manager_open_display (GdkDisplayManager *manager,
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const gchar *name)
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{
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return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->open_display (manager, name);
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}
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/**
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* gdk_atom_intern:
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* @atom_name: a string.
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* @only_if_exists: if %TRUE, GDK is allowed to not create a new atom, but
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* just return %GDK_NONE if the requested atom doesn't already
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* exists. Currently, the flag is ignored, since checking the
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* existance of an atom is as expensive as creating it.
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*
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* Finds or creates an atom corresponding to a given string.
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*
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* Returns: (transfer none): the atom corresponding to @atom_name.
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*/
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GdkAtom
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gdk_atom_intern (const gchar *atom_name,
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gboolean only_if_exists)
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{
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GdkDisplayManager *manager = gdk_display_manager_get ();
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return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->atom_intern (manager, atom_name, TRUE);
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}
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/**
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* gdk_atom_intern_static_string:
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* @atom_name: a static string
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*
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* Finds or creates an atom corresponding to a given string.
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*
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* Note that this function is identical to gdk_atom_intern() except
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* that if a new #GdkAtom is created the string itself is used rather
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* than a copy. This saves memory, but can only be used if the string
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* will <emphasis>always</emphasis> exist. It can be used with statically
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* allocated strings in the main program, but not with statically
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* allocated memory in dynamically loaded modules, if you expect to
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* ever unload the module again (e.g. do not use this function in
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* GTK+ theme engines).
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*
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* Returns: (transfer none): the atom corresponding to @atom_name
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*
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* Since: 2.10
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*/
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GdkAtom
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gdk_atom_intern_static_string (const gchar *atom_name)
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{
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GdkDisplayManager *manager = gdk_display_manager_get ();
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return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->atom_intern (manager, atom_name, FALSE);
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}
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/**
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* gdk_atom_name:
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* @atom: a #GdkAtom.
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*
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* Determines the string corresponding to an atom.
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*
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* Returns: a newly-allocated string containing the string
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* corresponding to @atom. When you are done with the
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* return value, you should free it using g_free().
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*/
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gchar *
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gdk_atom_name (GdkAtom atom)
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{
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GdkDisplayManager *manager = gdk_display_manager_get ();
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return GDK_DISPLAY_MANAGER_GET_CLASS (manager)->get_atom_name (manager, atom);
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}
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