350 lines
10 KiB
C
350 lines
10 KiB
C
/*
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* Copyright © 2010 Codethink Limited
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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 licence, 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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* Author: Ryan Lortie <desrt@desrt.ca>
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*/
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#include "config.h"
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#include <stdlib.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <string.h>
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#include "gtkapplication.h"
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#include "gtkmarshalers.h"
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#include "gtkmain.h"
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#include "gtkwindow.h"
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#include <gdk/gdk.h>
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#ifdef GDK_WINDOWING_X11
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#include <gdk/x11/gdkx.h>
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#endif
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/**
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* SECTION:gtkapplication
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* @title: GtkApplication
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* @short_description: Application class
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*
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* #GtkApplication is a class that handles many important aspects
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* of a GTK+ application in a convenient fashion, without enforcing
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* a one-size-fits-all application model.
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*
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* Currently, GtkApplication handles GTK+ initialization, application
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* uniqueness, provides some basic scriptability by exporting 'actions',
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* and manages a list of toplevel windows whose life-cycle is automatically
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* tied to the life-cycle of your application.
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*
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* <example id="gtkapplication"><title>A simple application</title>
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* <programlisting>
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* <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../examples/bloatpad.c">
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* <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
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* </xi:include>
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* </programlisting>
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* </example>
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*/
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enum {
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WINDOW_ADDED,
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WINDOW_REMOVED,
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LAST_SIGNAL
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};
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static guint gtk_application_signals[LAST_SIGNAL];
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G_DEFINE_TYPE (GtkApplication, gtk_application, G_TYPE_APPLICATION)
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struct _GtkApplicationPrivate
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{
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GList *windows;
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};
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static gboolean
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gtk_application_focus_in_event_cb (GtkWindow *window,
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GdkEventFocus *event,
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GtkApplication *application)
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{
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GtkApplicationPrivate *priv = application->priv;
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GList *link;
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/* Keep the window list sorted by most-recently-focused. */
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link = g_list_find (priv->windows, window);
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if (link != NULL && link != priv->windows)
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{
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priv->windows = g_list_remove_link (priv->windows, link);
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priv->windows = g_list_concat (link, priv->windows);
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}
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return FALSE;
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}
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static void
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gtk_application_startup (GApplication *application)
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{
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G_APPLICATION_CLASS (gtk_application_parent_class)
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->startup (application);
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gtk_init (0, 0);
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}
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static void
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gtk_application_add_platform_data (GApplication *application,
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GVariantBuilder *builder)
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{
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const gchar *startup_id;
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startup_id = getenv ("DESKTOP_STARTUP_ID");
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if (startup_id && g_utf8_validate (startup_id, -1, NULL))
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g_variant_builder_add (builder, "{sv}", "desktop-startup-id",
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g_variant_new_string (startup_id));
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}
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static void
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gtk_application_before_emit (GApplication *application,
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GVariant *platform_data)
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{
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GVariantIter iter;
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const gchar *key;
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GVariant *value;
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g_variant_iter_init (&iter, platform_data);
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while (g_variant_iter_loop (&iter, "{&sv}", &key, &value))
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{
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#ifdef GDK_WINDOWING_X11
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if (strcmp (key, "desktop-startup-id") == 0)
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{
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GdkDisplay *display;
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const gchar *id;
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display = gdk_display_get_default ();
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id = g_variant_get_string (value, NULL);
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gdk_x11_display_set_startup_notification_id (display, id);
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}
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#endif
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}
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}
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static void
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gtk_application_after_emit (GApplication *application,
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GVariant *platform_data)
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{
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gdk_notify_startup_complete ();
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}
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static void
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gtk_application_init (GtkApplication *application)
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{
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application->priv = G_TYPE_INSTANCE_GET_PRIVATE (application,
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GTK_TYPE_APPLICATION,
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GtkApplicationPrivate);
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}
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static void
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gtk_application_window_added (GtkApplication *application,
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GtkWindow *window)
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{
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GtkApplicationPrivate *priv = application->priv;
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priv->windows = g_list_prepend (priv->windows, window);
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gtk_window_set_application (window, application);
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g_application_hold (G_APPLICATION (application));
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g_signal_connect (window, "focus-in-event",
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G_CALLBACK (gtk_application_focus_in_event_cb),
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application);
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}
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static void
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gtk_application_window_removed (GtkApplication *application,
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GtkWindow *window)
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{
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GtkApplicationPrivate *priv = application->priv;
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g_signal_handlers_disconnect_by_func (window,
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gtk_application_focus_in_event_cb,
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application);
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g_application_release (G_APPLICATION (application));
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priv->windows = g_list_remove (priv->windows, window);
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gtk_window_set_application (window, NULL);
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}
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static void
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gtk_application_class_init (GtkApplicationClass *class)
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{
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GApplicationClass *application_class = G_APPLICATION_CLASS (class);
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application_class->add_platform_data = gtk_application_add_platform_data;
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application_class->before_emit = gtk_application_before_emit;
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application_class->after_emit = gtk_application_after_emit;
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application_class->startup = gtk_application_startup;
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class->window_added = gtk_application_window_added;
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class->window_removed = gtk_application_window_removed;
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g_type_class_add_private (class, sizeof (GtkApplicationPrivate));
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/**
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* GtkApplication::window-added:
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* @application: the #GtkApplication which emitted the signal
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* @window: the newly-added #GtkWindow
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*
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* Emitted when a #GtkWindow is added to @application through
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* gtk_application_add_window().
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*
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* Since: 3.2
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*/
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gtk_application_signals[WINDOW_ADDED] =
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g_signal_new ("window-added", GTK_TYPE_APPLICATION, G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GtkApplicationClass, window_added),
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NULL, NULL,
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g_cclosure_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1, GTK_TYPE_WINDOW);
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/**
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* GtkApplication::window-removed:
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* @application: the #GtkApplication which emitted the signal
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* @window: the #GtkWindow that is being removed
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*
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* Emitted when a #GtkWindow is removed from @application,
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* either as a side-effect of being destroyed or explicitly
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* through gtk_application_remove_window().
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*
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* Since: 3.2
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*/
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gtk_application_signals[WINDOW_REMOVED] =
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g_signal_new ("window-removed", GTK_TYPE_APPLICATION, G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GtkApplicationClass, window_removed),
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NULL, NULL,
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g_cclosure_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1, GTK_TYPE_WINDOW);
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}
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/**
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* gtk_application_new:
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* @application_id: the application id
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* @flags: the application flags
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*
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* Creates a new #GtkApplication instance.
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*
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* This function calls g_type_init() for you. gtk_init() is called
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* as soon as the application gets registered as the primary instance.
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*
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* The application id must be valid. See g_application_id_is_valid().
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*
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* Returns: a new #GtkApplication instance
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*/
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GtkApplication *
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gtk_application_new (const gchar *application_id,
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GApplicationFlags flags)
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{
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g_return_val_if_fail (g_application_id_is_valid (application_id), NULL);
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g_type_init ();
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return g_object_new (GTK_TYPE_APPLICATION,
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"application-id", application_id,
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"flags", flags,
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NULL);
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}
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/**
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* gtk_application_add_window:
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* @application: a #GtkApplication
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* @window: a #GtkWindow
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*
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* Adds a window from @application.
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*
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* This call is equivalent to setting the #GtkWindow:application
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* property of @window to @application.
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*
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* Normally, the connection between the application and the window
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* will remain until the window is destroyed, but you can explicitly
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* remove it with gtk_application_remove_window().
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*
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* GTK+ will keep the application running as long as it has
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* any windows.
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*
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* Since: 3.0
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**/
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void
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gtk_application_add_window (GtkApplication *application,
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GtkWindow *window)
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{
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g_return_if_fail (GTK_IS_APPLICATION (application));
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if (!g_list_find (application->priv->windows, window))
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g_signal_emit (application,
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gtk_application_signals[WINDOW_ADDED], 0, window);
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}
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/**
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* gtk_application_remove_window:
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* @application: a #GtkApplication
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* @window: a #GtkWindow
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*
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* Remove a window from @application.
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*
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* If @window belongs to @application then this call is equivalent to
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* setting the #GtkWindow:application property of @window to
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* %NULL.
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*
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* The application may stop running as a result of a call to this
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* function.
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*
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* Since: 3.0
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**/
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void
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gtk_application_remove_window (GtkApplication *application,
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GtkWindow *window)
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{
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g_return_if_fail (GTK_IS_APPLICATION (application));
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if (g_list_find (application->priv->windows, window))
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g_signal_emit (application,
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gtk_application_signals[WINDOW_REMOVED], 0, window);
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}
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/**
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* gtk_application_get_windows:
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* @application: a #GtkApplication
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*
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* Gets a list of the #GtkWindow<!-- -->s associated with @application.
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*
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* The list is sorted by most recently focused window, such that the first
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* element is the currently focused window. (Useful for choosing a parent
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* for a transient window.)
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*
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* The list that is returned should not be modified in any way. It will
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* only remain valid until the next focus change or window creation or
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* deletion.
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*
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* Returns: (element-type GtkWindow) (transfer none): a #GList of #GtkWindow
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*
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* Since: 3.0
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**/
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GList *
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gtk_application_get_windows (GtkApplication *application)
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{
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g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
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return application->priv->windows;
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}
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