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gtk2/gtk/gtkapplication.c

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/* GTK - The GIMP Toolkit
*
* Copyright (C) 2010 Red Hat, Inc.
*
* 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 License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* 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: Colin Walters <walters@verbum.org>
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <stdlib.h>
#include <unistd.h>
#include "gtkapplication.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkalias.h"
#include <gdk/gdk.h>
#ifdef GDK_WINDOWING_X11
#include <gdk/x11/gdkx.h>
#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 application uniqueness, provides
* some basic scriptability by exporting 'actions', implements some
* standard actions itself (such as 'Quit') and provides a main window
* whose life-cycle is automatically tied to the life-cycle of your
* application.
*
* <example id="gtkapplication"><title>A simple application</title>
* <programlisting>
* <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gtk/tests/gtk-example-application.c">
* <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
* </xi:include>
* </programlisting>
* </example>
*/
enum
{
PROP_0,
PROP_WINDOW
};
enum
{
ACTIVATED,
QUIT,
ACTION,
LAST_SIGNAL
};
static guint gtk_application_signals[LAST_SIGNAL] = { 0 };
struct _GtkApplicationPrivate
{
GtkActionGroup *main_actions;
GtkWindow *default_window;
GSList *windows;
};
G_DEFINE_TYPE (GtkApplication, gtk_application, G_TYPE_APPLICATION)
static void
process_timestamp_from_platform_data (GVariant *platform_data)
{
/* TODO - extract timestamp from here, update GDK time */
}
static gboolean
gtk_application_default_quit (GtkApplication *application)
{
gtk_main_quit ();
return TRUE;
}
static gboolean
gtk_application_default_quit_with_data (GApplication *application,
GVariant *platform_data)
{
gboolean result;
process_timestamp_from_platform_data (platform_data);
g_signal_emit (application, gtk_application_signals[QUIT], 0, &result);
return result;
}
static void
gtk_application_default_run (GApplication *application)
{
gtk_main ();
}
static void
gtk_application_default_prepare_activation (GApplication *application,
GVariant *arguments,
GVariant *platform_data)
{
GVariantIter iter;
const gchar *key;
GVariant *value;
g_variant_iter_init (&iter, platform_data);
while (g_variant_iter_next (&iter, "{&sv}", &key, &value))
{
if (strcmp (key, "startup-notification-id") == 0 &&
g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
gdk_notify_startup_complete_with_id (g_variant_get_string (value, NULL));
g_variant_unref (value);
}
g_signal_emit (G_OBJECT (application), gtk_application_signals[ACTIVATED], 0, arguments);
}
static void
gtk_application_default_activated (GtkApplication *application,
GVariant *arguments)
{
GtkApplicationPrivate *priv = application->priv;
/* TODO: should we raise the last focused window instead ? */
if (priv->default_window != NULL)
gtk_window_present (priv->default_window);
}
static void
gtk_application_default_action (GtkApplication *application,
const gchar *action_name)
{
GtkApplicationPrivate *priv = application->priv;
GtkAction *action;
action = gtk_action_group_get_action (priv->main_actions, action_name);
if (action)
gtk_action_activate (action);
}
static GtkWindow *
gtk_application_default_create_window (GtkApplication *application)
{
return GTK_WINDOW (gtk_window_new (GTK_WINDOW_TOPLEVEL));
}
static void
gtk_application_default_action_with_data (GApplication *application,
const gchar *action_name,
GVariant *platform_data)
{
process_timestamp_from_platform_data (platform_data);
g_signal_emit (application, gtk_application_signals[ACTION], g_quark_from_string (action_name));
}
static GVariant *
gtk_application_format_activation_data (void)
{
const gchar *startup_id = NULL;
GdkDisplay *display = gdk_display_get_default ();
GVariantBuilder builder;
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a{sv}"));
/* try and get the startup notification id from GDK, the environment
* or, if everything else failed, fake one.
*/
#ifdef GDK_WINDOWING_X11
startup_id = gdk_x11_display_get_startup_notification_id (display);
#endif /* GDK_WINDOWING_X11 */
if (startup_id)
g_variant_builder_add (&builder, "{sv}", "startup-notification-id",
g_variant_new ("s", startup_id));
return g_variant_builder_end (&builder);
}
static GVariant *
variant_from_argv (int argc,
char **argv)
{
GVariantBuilder builder;
int i;
g_variant_builder_init (&builder, G_VARIANT_TYPE ("aay"));
for (i = 1; i < argc; i++)
{
guint8 *argv_bytes;
argv_bytes = (guint8*) argv[i];
g_variant_builder_add_value (&builder,
g_variant_new_byte_array (argv_bytes, -1));
}
return g_variant_builder_end (&builder);
}
/**
* gtk_application_new:
* @appid: System-dependent application identifier
* @argc: (allow-none) (inout): System argument count
* @argv: (allow-none) (inout): System argument vector
*
* Create a new #GtkApplication, or if one has already been initialized
* in this process, return the existing instance. This function will as
* a side effect initialize the display system; see gtk_init().
*
* For the behavior if this application is running in another process,
* see g_application_new().
*
* Returns: (transfer full): A newly-referenced #GtkApplication
*
* Since: 3.0
*/
GtkApplication*
gtk_application_new (const gchar *appid,
gint *argc,
gchar ***argv)
{
GtkApplication *app;
gint argc_for_app;
gchar **argv_for_app;
GVariant *argv_variant;
GError *error = NULL;
gtk_init (argc, argv);
if (argc)
argc_for_app = *argc;
else
argc_for_app = 0;
if (argv)
argv_for_app = *argv;
else
argv_for_app = NULL;
argv_variant = variant_from_argv (argc_for_app, argv_for_app);
app = g_initable_new (GTK_TYPE_APPLICATION,
NULL,
&error,
"application-id", appid,
"argv", argv_variant,
NULL);
if (app == NULL)
{
g_error ("%s", error->message);
g_clear_error (&error);
return NULL;
}
return app;
}
static void
on_action_sensitive (GtkAction *action,
GParamSpec *pspec,
GtkApplication *app)
{
g_application_set_action_enabled (G_APPLICATION (app),
gtk_action_get_name (action),
gtk_action_get_sensitive (action));
}
/**
* gtk_application_set_action_group:
* @app: A #GtkApplication
* @group: A #GtkActionGroup
*
* Set @group as this application's global action group.
* This will ensure the operating system interface uses
* these actions as follows:
*
* <itemizedlist>
* <listitem>In GNOME 2 this exposes the actions for scripting.</listitem>
* <listitem>In GNOME 3, this function populates the application menu.</listitem>
* <listitem>In Windows prior to version 7, this function does nothing.</listitem>
* <listitem>In Windows 7, this function adds "Tasks" to the Jump List.</listitem>
* <listitem>In Mac OS X, this function extends the Dock menu.</listitem>
* </itemizedlist>
*
* It is an error to call this function more than once.
*
* Since: 3.0
*/
void
gtk_application_set_action_group (GtkApplication *app,
GtkActionGroup *group)
{
GList *actions, *iter;
g_return_if_fail (GTK_IS_APPLICATION (app));
g_return_if_fail (GTK_IS_ACTION_GROUP (group));
g_return_if_fail (app->priv->main_actions == NULL);
app->priv->main_actions = g_object_ref (group);
actions = gtk_action_group_list_actions (group);
for (iter = actions; iter; iter = iter->next)
{
GtkAction *action = iter->data;
g_application_add_action (G_APPLICATION (app),
gtk_action_get_name (action),
gtk_action_get_tooltip (action));
g_signal_connect (action, "notify::sensitive",
G_CALLBACK (on_action_sensitive), app);
}
g_list_free (actions);
}
static gboolean
gtk_application_on_window_destroy (GtkWidget *window,
gpointer user_data)
{
GtkApplication *app = GTK_APPLICATION (user_data);
app->priv->windows = g_slist_remove (app->priv->windows, window);
if (app->priv->windows == NULL)
gtk_application_quit (app);
return FALSE;
}
static gchar *default_title;
/**
* gtk_application_add_window:
* @app: a #GtkApplication
* @window: a toplevel window to add to @app
*
* Adds a window to the #GtkApplication.
*
* If the user closes all of the windows added to @app, the default
* behaviour is to call gtk_application_quit().
*
* If your application uses only a single toplevel window, you can
* use gtk_application_get_window(). If you are using a sub-class
* of #GtkApplication you should call gtk_application_create_window()
* to let the #GtkApplication instance create a #GtkWindow and add
* it to the list of toplevels of the application. You should call
* this function only to add #GtkWindow<!-- -->s that you created
* directly using gtk_window_new().
*
* Since: 3.0
*/
void
gtk_application_add_window (GtkApplication *app,
GtkWindow *window)
{
GtkApplicationPrivate *priv;
g_return_if_fail (GTK_IS_APPLICATION (app));
g_return_if_fail (GTK_IS_WINDOW (window));
priv = app->priv;
if (g_slist_find (priv->windows, window) != NULL)
return;
priv->windows = g_slist_prepend (priv->windows, window);
if (priv->default_window == NULL)
priv->default_window = window;
if (gtk_window_get_title (window) == NULL && default_title != NULL)
gtk_window_set_title (window, default_title);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_application_on_window_destroy),
app);
}
/**
* gtk_application_get_window:
* @app: a #GtkApplication
*
* A simple #GtkApplication has a "default window". This window should
* act as the primary user interaction point with your application.
* The window returned by this function is of type #GTK_WINDOW_TYPE_TOPLEVEL
* and its properties such as "title" and "icon-name" will be initialized
* as appropriate for the platform.
*
* If the user closes this window, and your application hasn't created
* any other windows, the default action will be to call gtk_application_quit().
*
* If your application has more than one toplevel window (e.g. an
* single-document-interface application with multiple open documents),
* or if you are constructing your toplevel windows yourself (e.g. using
* #GtkBuilder), use gtk_application_create_window() or
* gtk_application_add_window() instead.
*
* Returns: (transfer none): The default #GtkWindow for this application
*
* Since: 3.0
*/
GtkWindow *
gtk_application_get_window (GtkApplication *app)
{
GtkApplicationPrivate *priv;
g_return_val_if_fail (GTK_IS_APPLICATION (app), NULL);
priv = app->priv;
if (priv->default_window != NULL)
return priv->default_window;
return gtk_application_create_window (app);
}
/**
* gtk_application_create_window:
* @app: a #GtkApplication
*
* Creates a new #GtkWindow for the application.
*
* This function calls the #GtkApplication::create_window() virtual function,
* which can be overridden by sub-classes, for instance to use #GtkBuilder to
* create the user interface. After creating a new #GtkWindow instance, it will
* be added to the list of toplevels associated to the application.
*
* Return value: (transfer none): the newly created application #GtkWindow
*
* Since: 3.0
*/
GtkWindow *
gtk_application_create_window (GtkApplication *app)
{
GtkWindow *window;
g_return_val_if_fail (GTK_IS_APPLICATION (app), NULL);
window = GTK_APPLICATION_GET_CLASS (app)->create_window (app);
gtk_application_add_window (app, window);
return window;
}
/**
* gtk_application_run:
* @app: a #GtkApplication
*
* Runs the main loop; see g_application_run().
* The default implementation for #GtkApplication uses gtk_main().
*
* Since: 3.0
*/
void
gtk_application_run (GtkApplication *app)
{
g_application_run (G_APPLICATION (app));
}
/**
* gtk_application_quit:
* @app: a #GtkApplication
*
* Request the application exit. This function invokes
* g_application_quit_with_data(), which normally will
* in turn cause @app to emit #GtkApplication::quit.
*
* To control an application's quit behavior (for example, to ask for
* files to be saved), connect to the #GtkApplication::quit signal
* handler.
*
* Since: 3.0
*/
void
gtk_application_quit (GtkApplication *app)
{
GVariantBuilder builder;
GVariant *platform_data;
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a{sv}"));
g_variant_builder_add (&builder, "{sv}",
"timestamp",
g_variant_new ("u", gtk_get_current_event_time ()));
platform_data = g_variant_builder_end (&builder);
g_application_quit_with_data (G_APPLICATION (app), platform_data);
g_variant_unref (platform_data);
}
static void
gtk_application_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkApplication *app = GTK_APPLICATION (object);
switch (prop_id)
{
case PROP_WINDOW:
g_value_set_object (value, gtk_application_get_window (app));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gtk_application_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkApplication *app = GTK_APPLICATION (object);
g_assert (app != NULL);
switch (prop_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
setup_default_window_decorations (void)
{
const gchar *pid;
const gchar *filename;
GKeyFile *keyfile;
gchar *title;
gchar *icon_name;
pid = g_getenv ("GIO_LAUNCHED_DESKTOP_FILE_PID");
filename = g_getenv ("GIO_LAUNCHED_DESKTOP_FILE");
keyfile = g_key_file_new ();
if (pid != NULL && filename != NULL && atoi (pid) == getpid () &&
g_key_file_load_from_file (keyfile, filename, 0, NULL))
{
title = g_key_file_get_locale_string (keyfile, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_NAME, NULL, NULL);
icon_name = g_key_file_get_string (keyfile, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_ICON, NULL);
if (default_title == NULL)
default_title = title;
if (gtk_window_get_default_icon_name () == NULL)
gtk_window_set_default_icon_name (icon_name);
g_free (icon_name);
}
g_key_file_free (keyfile);
}
static void
gtk_application_init (GtkApplication *application)
{
application->priv = G_TYPE_INSTANCE_GET_PRIVATE (application, GTK_TYPE_APPLICATION, GtkApplicationPrivate);
g_object_set (application, "platform-data", gtk_application_format_activation_data (), NULL);
setup_default_window_decorations ();
}
static GObject*
gtk_application_constructor (GType type,
guint n_construct_properties,
GObjectConstructParam *construct_params)
{
GObject *object;
/* Last ditch effort here */
gtk_init (0, NULL);
object = (* G_OBJECT_CLASS (gtk_application_parent_class)->constructor) (type,
n_construct_properties,
construct_params);
return object;
}
static void
gtk_application_class_init (GtkApplicationClass *klass)
{
GObjectClass *gobject_class;
GApplicationClass *application_class;
gobject_class = G_OBJECT_CLASS (klass);
application_class = G_APPLICATION_CLASS (klass);
gobject_class->constructor = gtk_application_constructor;
gobject_class->get_property = gtk_application_get_property;
gobject_class->set_property = gtk_application_set_property;
application_class->run = gtk_application_default_run;
application_class->quit_with_data = gtk_application_default_quit_with_data;
application_class->action_with_data = gtk_application_default_action_with_data;
application_class->prepare_activation = gtk_application_default_prepare_activation;
klass->quit = gtk_application_default_quit;
klass->action = gtk_application_default_action;
klass->create_window = gtk_application_default_create_window;
klass->activated = gtk_application_default_activated;
/**
* GtkApplication::activated:
* @arguments: A #GVariant with the signature "aay"
*
* This signal is emitted when a non-primary process for a given
* application is invoked while your application is running; for
* example, when a file browser launches your program to open a
* file. The raw operating system arguments are passed in the
* variant @arguments.
*/
gtk_application_signals[ACTIVATED] =
g_signal_new (g_intern_static_string ("activated"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkApplicationClass, activated),
NULL, NULL,
g_cclosure_marshal_VOID__VARIANT,
G_TYPE_NONE, 1,
G_TYPE_VARIANT);
/**
* GtkApplication::quit:
* @application: the object on which the signal is emitted
*
* This signal is emitted when a quit is initiated. See also
* the #GApplication::quit-with-data signal which may in
* turn trigger this signal.
*
* The default handler for this signal exits the mainloop of the
* application.
*
* Returns: %TRUE if the signal has been handled, %FALSE to continue
* signal emission
*/
gtk_application_signals[QUIT] =
g_signal_new (g_intern_static_string ("quit"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkApplicationClass, quit),
g_signal_accumulator_true_handled, NULL,
_gtk_marshal_BOOLEAN__VOID,
G_TYPE_BOOLEAN, 0);
/**
* GtkApplication::action:
* @application: the object on which the signal is emitted
* @name: The name of the activated action
*
* This signal is emitted when an action is activated. The action name
* is passed as the first argument, but also as signal detail, so it
* is possible to connect to this signal for individual actions.
*
* See also the #GApplication::action-with-data signal which may in
* turn trigger this signal.
*
* The signal is never emitted for disabled actions.
*/
gtk_application_signals[ACTION] =
g_signal_new (g_intern_static_string ("action"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE | G_SIGNAL_DETAILED,
G_STRUCT_OFFSET (GtkApplicationClass, action),
NULL, NULL,
g_cclosure_marshal_VOID__STRING,
G_TYPE_NONE, 1,
G_TYPE_STRING);
g_type_class_add_private (gobject_class, sizeof (GtkApplicationPrivate));
}
#define __GTK_APPLICATION_C__
#include "gtkaliasdef.c"
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