Add a new example app

Add a new example to the getting started part of the docs. The focus
of this example is on 'new stuff': GtkApplication, templates, settings,
gmenu, gaction, GtkStack, GtkHeaderBar, GtkSearchBar, GtkRevealer,
GtkListBox, GtkMenuButton, etc.

It is being developed in several steps. Each step is put in a separate
directory below examples/: application1, ..., application8. This is a
little repetitive, but lets us use the code of all examples in the
documentation.

1 files changed, 112 insertions, 0 deletions

diff --git a/examples/application7/exampleapp.c b/examples/application7/exampleapp.c
new file mode 100644
index 0000000000..633216c692
--- /dev/null
+++ b/examples/application7/exampleapp.c
@@ -0,0 +1,112 @@
+#include <gtk/gtk.h>
+
+#include "exampleapp.h"
+#include "exampleappwin.h"
+#include "exampleappprefs.h"
+
+struct ExampleApp {
+        GtkApplication parent;
+};
+
+struct ExampleAppClass {
+        GtkApplicationClass parent_class;
+};
+
+G_DEFINE_TYPE(ExampleApp, example_app, GTK_TYPE_APPLICATION);
+
+static void
+example_app_init (ExampleApp *app)
+{
+}
+
+static void
+preferences_activated (GSimpleAction *action,
+                       GVariant      *parameter,
+                       gpointer       app)
+{
+        ExampleAppPrefs *prefs;
+        GtkWindow *win;
+
+        win = gtk_application_get_active_window (GTK_APPLICATION (app));
+        prefs = example_app_prefs_new (EXAMPLE_APP_WINDOW (win));
+        gtk_window_present (GTK_WINDOW (prefs));
+}
+
+static void
+quit_activated (GSimpleAction *action,
+                GVariant      *parameter,
+                gpointer       app)
+{
+  g_application_quit (G_APPLICATION (app));
+}
+
+static GActionEntry app_entries[] = {
+        { "preferences", preferences_activated, NULL, NULL, NULL },
+        { "quit", quit_activated, NULL, NULL, NULL }
+};
+
+static void
+example_app_startup (GApplication *app)
+{
+        GtkBuilder *builder;
+        GMenuModel *app_menu;
+
+        G_APPLICATION_CLASS (example_app_parent_class)->startup (app);
+
+        g_action_map_add_action_entries (G_ACTION_MAP (app),
+                                         app_entries, G_N_ELEMENTS (app_entries),
+                                         app);
+
+        builder = gtk_builder_new_from_resource ("/org/gtk/exampleapp/app-menu.ui");
+        app_menu = G_MENU_MODEL (gtk_builder_get_object (builder, "appmenu"));
+        gtk_application_set_app_menu (GTK_APPLICATION (app), app_menu);
+        g_object_unref (builder);
+}
+
+static void
+example_app_activate (GApplication *app)
+{
+        ExampleAppWindow *win;
+
+        win = example_app_window_new (EXAMPLE_APP (app));
+        gtk_window_present (GTK_WINDOW (win));
+}
+
+static void
+example_app_open (GApplication  *app,
+                  GFile        **files,
+                  gint           n_files,
+                  const gchar   *hint)
+{
+        GList *windows;
+        ExampleAppWindow *win;
+        int i;
+
+        windows = gtk_application_get_windows (GTK_APPLICATION (app));
+        if (windows)
+                win = EXAMPLE_APP_WINDOW (windows->data);
+        else
+                win = example_app_window_new (EXAMPLE_APP (app));
+
+        for (i = 0; i < n_files; i++)
+                example_app_window_open (win, files[i]);
+
+        gtk_window_present (GTK_WINDOW (win));
+}
+
+static void
+example_app_class_init (ExampleAppClass *class)
+{
+        G_APPLICATION_CLASS (class)->startup = example_app_startup;
+        G_APPLICATION_CLASS (class)->activate = example_app_activate;
+        G_APPLICATION_CLASS (class)->open = example_app_open;
+}
+
+ExampleApp *
+example_app_new (void)
+{
+        return g_object_new (EXAMPLE_APP_TYPE,
+                             "application-id", "org.gtk.exampleapp",
+                             "flags", G_APPLICATION_HANDLES_OPEN,
+                             NULL);
+}