Commit ae812465 authored by Matthias Clasen's avatar Matthias Clasen

Add an example for handling app menu fallback

The example shows how to use a menu button instead of the default
menubar when the shell doesn't show the app menu.
parent 9613cf68
......@@ -53,7 +53,8 @@ noinst_PROGRAMS = \
hello-world \
window-default \
bloatpad \
plugman \
plugman \
sunny \
grid-packing \
drawing \
builder
......
#include <stdlib.h>
#include <gtk/gtk.h>
static void
new_window (GApplication *app,
GFile *file)
{
GtkWidget *window, *scrolled, *view, *overlay;
GtkSettings *settings;
gboolean appmenu;
window = gtk_application_window_new (GTK_APPLICATION (app));
gtk_application_window_set_show_menubar (GTK_APPLICATION_WINDOW (window), FALSE);
gtk_window_set_default_size ((GtkWindow*)window, 640, 480);
gtk_window_set_title (GTK_WINDOW (window), "Sunny");
overlay = gtk_overlay_new ();
gtk_container_add (GTK_CONTAINER (window), overlay);
settings = gtk_settings_get_default ();
g_object_get (settings, "gtk-shell-shows-app-menu", &appmenu, NULL);
if (!appmenu)
{
GMenuModel *model;
GtkWidget *menu;
GtkWidget *image;
model = gtk_application_get_app_menu (GTK_APPLICATION (app));
menu = gtk_menu_button_new ();
gtk_menu_button_set_menu_model (GTK_MENU_BUTTON (menu), model);
gtk_widget_set_halign (menu, GTK_ALIGN_END);
gtk_widget_set_valign (menu, GTK_ALIGN_START);
image = gtk_image_new ();
gtk_image_set_from_icon_name (GTK_IMAGE (image),
"sunny",
GTK_ICON_SIZE_MENU);
gtk_button_set_image (GTK_BUTTON (menu), image);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), menu);
}
scrolled = gtk_scrolled_window_new (NULL, NULL);
gtk_widget_set_hexpand (scrolled, TRUE);
gtk_widget_set_vexpand (scrolled, TRUE);
view = gtk_text_view_new ();
gtk_container_add (GTK_CONTAINER (scrolled), view);
gtk_container_add (GTK_CONTAINER (overlay), scrolled);
if (file != NULL)
{
gchar *contents;
gsize length;
if (g_file_load_contents (file, NULL, &contents, &length, NULL, NULL))
{
GtkTextBuffer *buffer;
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
gtk_text_buffer_set_text (buffer, contents, length);
g_free (contents);
}
}
gtk_widget_show_all (GTK_WIDGET (window));
}
static void
activate (GApplication *application)
{
new_window (application, NULL);
}
static void
open (GApplication *application,
GFile **files,
gint n_files,
const gchar *hint)
{
gint i;
for (i = 0; i < n_files; i++)
new_window (application, files[i]);
}
typedef GtkApplication MenuButton;
typedef GtkApplicationClass MenuButtonClass;
G_DEFINE_TYPE (MenuButton, menu_button, GTK_TYPE_APPLICATION)
static void
show_about (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
gtk_show_about_dialog (NULL,
"program-name", "Sunny",
"title", "About Sunny",
"logo-icon-name", "sunny",
"comments", "A cheap Bloatpad clone.",
NULL);
}
static void
quit_app (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
GList *list, *next;
GtkWindow *win;
g_print ("Going down...\n");
list = gtk_application_get_windows (GTK_APPLICATION (g_application_get_default ()));
while (list)
{
win = list->data;
next = list->next;
gtk_widget_destroy (GTK_WIDGET (win));
list = next;
}
}
static void
new_activated (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
GApplication *app = user_data;
g_application_activate (app);
}
static GActionEntry app_entries[] = {
{ "about", show_about, NULL, NULL, NULL },
{ "quit", quit_app, NULL, NULL, NULL },
{ "new", new_activated, NULL, NULL, NULL }
};
static void
startup (GApplication *application)
{
GtkBuilder *builder;
G_APPLICATION_CLASS (menu_button_parent_class)->startup (application);
g_action_map_add_action_entries (G_ACTION_MAP (application), app_entries, G_N_ELEMENTS (app_entries), application);
builder = gtk_builder_new ();
gtk_builder_add_from_string (builder,
"<interface>"
" <menu id='app-menu'>"
" <section>"
" <item>"
" <attribute name='label' translatable='yes'>_New Window</attribute>"
" <attribute name='action'>app.new</attribute>"
" </item>"
" <item>"
" <attribute name='label' translatable='yes'>_About Sunny</attribute>"
" <attribute name='action'>app.about</attribute>"
" </item>"
" <item>"
" <attribute name='label' translatable='yes'>_Quit</attribute>"
" <attribute name='action'>app.quit</attribute>"
" <attribute name='accel'>&lt;Primary&gt;q</attribute>"
" </item>"
" </section>"
" </menu>"
"</interface>", -1, NULL);
gtk_application_set_app_menu (GTK_APPLICATION (application), G_MENU_MODEL (gtk_builder_get_object (builder, "app-menu")));
g_object_unref (builder);
}
static void
menu_button_init (MenuButton *app)
{
}
static void
menu_button_class_init (MenuButtonClass *class)
{
GApplicationClass *application_class = G_APPLICATION_CLASS (class);
application_class->startup = startup;
application_class->activate = activate;
application_class->open = open;
}
MenuButton *
menu_button_new (void)
{
g_type_init ();
return g_object_new (menu_button_get_type (),
"application-id", "org.gtk.Test.Sunny",
"flags", G_APPLICATION_HANDLES_OPEN,
NULL);
}
int
main (int argc, char **argv)
{
MenuButton *menu_button;
int status;
menu_button = menu_button_new ();
status = g_application_run (G_APPLICATION (menu_button), argc, argv);
g_object_unref (menu_button);
return status;
}
......@@ -107,6 +107,14 @@
* </programlisting>
* </example>
*
* <example><title>Handling fallback yourself</title>
* <programlisting>
* <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../examples/sunny.c">
* <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
* </xi:include>
* </programlisting>
* </example>
*
* The XML format understood by #GtkBuilder for #GMenuModel consists
* of a toplevel <tag class="starttag">menu</tag> element, which contains
* one or more <tag class="starttag">item</tag> elements. Each
......
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