/* * Copyright © 2010 Codethink Limited * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the licence, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. * * Author: Ryan Lortie */ #include "config.h" #include #ifdef HAVE_UNISTD_H #include #endif #include #include "gtkapplication.h" #include "gtkmarshalers.h" #include "gtkmain.h" #include "gtkwindow.h" #include #ifdef GDK_WINDOWING_X11 #include #endif /** * SECTION:gtkapplication * @title: GtkApplication * @short_description: Application class * * #GtkApplication is a class that handles many important aspects * of a GTK+ application in a convenient fashion, without enforcing * a one-size-fits-all application model. * * Currently, GtkApplication handles GTK+ initialization, application * uniqueness, provides some basic scriptability and desktop shell integration * by exporting actions and menus and manages a list of toplevel windows whose * life-cycle is automatically tied to the life-cycle of your application. * * While GtkApplication works fine with plain #GtkWindows, it is recommended * to use it together with #GtkApplicationWindow. * * A simple application * * * FIXME: MISSING XINCLUDE CONTENT * * * */ enum { WINDOW_ADDED, WINDOW_REMOVED, LAST_SIGNAL }; static guint gtk_application_signals[LAST_SIGNAL]; G_DEFINE_TYPE (GtkApplication, gtk_application, G_TYPE_APPLICATION) struct _GtkApplicationPrivate { GList *windows; }; static gboolean gtk_application_focus_in_event_cb (GtkWindow *window, GdkEventFocus *event, GtkApplication *application) { GtkApplicationPrivate *priv = application->priv; GList *link; /* Keep the window list sorted by most-recently-focused. */ link = g_list_find (priv->windows, window); if (link != NULL && link != priv->windows) { priv->windows = g_list_remove_link (priv->windows, link); priv->windows = g_list_concat (link, priv->windows); } return FALSE; } static void gtk_application_startup (GApplication *application) { G_APPLICATION_CLASS (gtk_application_parent_class) ->startup (application); gtk_init (0, 0); } static void gtk_application_shutdown (GApplication *application) { G_APPLICATION_CLASS (gtk_application_parent_class) ->shutdown (application); } static void gtk_application_add_platform_data (GApplication *application, GVariantBuilder *builder) { const gchar *startup_id; startup_id = getenv ("DESKTOP_STARTUP_ID"); if (startup_id && g_utf8_validate (startup_id, -1, NULL)) g_variant_builder_add (builder, "{sv}", "desktop-startup-id", g_variant_new_string (startup_id)); } static void gtk_application_before_emit (GApplication *application, GVariant *platform_data) { GVariantIter iter; const gchar *key; GVariant *value; g_variant_iter_init (&iter, platform_data); while (g_variant_iter_loop (&iter, "{&sv}", &key, &value)) { #ifdef GDK_WINDOWING_X11 if (strcmp (key, "desktop-startup-id") == 0) { GdkDisplay *display; const gchar *id; display = gdk_display_get_default (); id = g_variant_get_string (value, NULL); gdk_x11_display_set_startup_notification_id (display, id); } #endif } } static void gtk_application_after_emit (GApplication *application, GVariant *platform_data) { gdk_notify_startup_complete (); } static void gtk_application_init (GtkApplication *application) { application->priv = G_TYPE_INSTANCE_GET_PRIVATE (application, GTK_TYPE_APPLICATION, GtkApplicationPrivate); } static void gtk_application_window_added (GtkApplication *application, GtkWindow *window) { GtkApplicationPrivate *priv = application->priv; priv->windows = g_list_prepend (priv->windows, window); gtk_window_set_application (window, application); g_application_hold (G_APPLICATION (application)); g_signal_connect (window, "focus-in-event", G_CALLBACK (gtk_application_focus_in_event_cb), application); } static void gtk_application_window_removed (GtkApplication *application, GtkWindow *window) { GtkApplicationPrivate *priv = application->priv; g_signal_handlers_disconnect_by_func (window, gtk_application_focus_in_event_cb, application); g_application_release (G_APPLICATION (application)); priv->windows = g_list_remove (priv->windows, window); gtk_window_set_application (window, NULL); } static void gtk_application_class_init (GtkApplicationClass *class) { GApplicationClass *application_class = G_APPLICATION_CLASS (class); application_class->add_platform_data = gtk_application_add_platform_data; application_class->before_emit = gtk_application_before_emit; application_class->after_emit = gtk_application_after_emit; application_class->startup = gtk_application_startup; application_class->shutdown = gtk_application_shutdown; class->window_added = gtk_application_window_added; class->window_removed = gtk_application_window_removed; g_type_class_add_private (class, sizeof (GtkApplicationPrivate)); /** * GtkApplication::window-added: * @application: the #GtkApplication which emitted the signal * @window: the newly-added #GtkWindow * * Emitted when a #GtkWindow is added to @application through * gtk_application_add_window(). * * Since: 3.2 */ gtk_application_signals[WINDOW_ADDED] = g_signal_new ("window-added", GTK_TYPE_APPLICATION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkApplicationClass, window_added), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, GTK_TYPE_WINDOW); /** * GtkApplication::window-removed: * @application: the #GtkApplication which emitted the signal * @window: the #GtkWindow that is being removed * * Emitted when a #GtkWindow is removed from @application, * either as a side-effect of being destroyed or explicitly * through gtk_application_remove_window(). * * Since: 3.2 */ gtk_application_signals[WINDOW_REMOVED] = g_signal_new ("window-removed", GTK_TYPE_APPLICATION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkApplicationClass, window_removed), NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 1, GTK_TYPE_WINDOW); } /** * gtk_application_new: * @application_id: the application id * @flags: the application flags * * Creates a new #GtkApplication instance. * * This function calls g_type_init() for you. gtk_init() is called * as soon as the application gets registered as the primary instance. * * The application id must be valid. See g_application_id_is_valid(). * * Returns: a new #GtkApplication instance */ GtkApplication * gtk_application_new (const gchar *application_id, GApplicationFlags flags) { g_return_val_if_fail (g_application_id_is_valid (application_id), NULL); g_type_init (); return g_object_new (GTK_TYPE_APPLICATION, "application-id", application_id, "flags", flags, NULL); } /** * gtk_application_add_window: * @application: a #GtkApplication * @window: a #GtkWindow * * Adds a window from @application. * * This call is equivalent to setting the #GtkWindow:application * property of @window to @application. * * Normally, the connection between the application and the window * will remain until the window is destroyed, but you can explicitly * remove it with gtk_application_remove_window(). * * GTK+ will keep the application running as long as it has * any windows. * * Since: 3.0 **/ void gtk_application_add_window (GtkApplication *application, GtkWindow *window) { g_return_if_fail (GTK_IS_APPLICATION (application)); if (!g_list_find (application->priv->windows, window)) g_signal_emit (application, gtk_application_signals[WINDOW_ADDED], 0, window); } /** * gtk_application_remove_window: * @application: a #GtkApplication * @window: a #GtkWindow * * Remove a window from @application. * * If @window belongs to @application then this call is equivalent to * setting the #GtkWindow:application property of @window to * %NULL. * * The application may stop running as a result of a call to this * function. * * Since: 3.0 **/ void gtk_application_remove_window (GtkApplication *application, GtkWindow *window) { g_return_if_fail (GTK_IS_APPLICATION (application)); if (g_list_find (application->priv->windows, window)) g_signal_emit (application, gtk_application_signals[WINDOW_REMOVED], 0, window); } /** * gtk_application_get_windows: * @application: a #GtkApplication * * Gets a list of the #GtkWindows associated with @application. * * The list is sorted by most recently focused window, such that the first * element is the currently focused window. (Useful for choosing a parent * for a transient window.) * * The list that is returned should not be modified in any way. It will * only remain valid until the next focus change or window creation or * deletion. * * Returns: (element-type GtkWindow) (transfer none): a #GList of #GtkWindow * * Since: 3.0 **/ GList * gtk_application_get_windows (GtkApplication *application) { g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL); return application->priv->windows; }