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, 73 insertions, 0 deletions

diff --git a/examples/application4/exampleappwin.c b/examples/application4/exampleappwin.c
new file mode 100644
index 0000000000..52306e1fd7
--- /dev/null
+++ b/examples/application4/exampleappwin.c
@@ -0,0 +1,73 @@
+#include "exampleapp.h"
+#include "exampleappwin.h"
+#include <gtk/gtk.h>
+
+struct ExampleAppWindow {
+        GtkApplicationWindow parent;
+};
+
+struct ExampleAppWindowClass {
+        GtkApplicationWindowClass parent_class;
+};
+
+typedef struct ExampleAppWindowPrivate ExampleAppWindowPrivate;
+
+struct ExampleAppWindowPrivate {
+        GtkWidget *stack;
+};
+
+G_DEFINE_TYPE_WITH_PRIVATE(ExampleAppWindow, example_app_window, GTK_TYPE_APPLICATION_WINDOW);
+
+static void
+example_app_window_init (ExampleAppWindow *win)
+{
+        gtk_widget_init_template (GTK_WIDGET (win));
+}
+
+static void
+example_app_window_class_init (ExampleAppWindowClass *class)
+{
+        gtk_widget_class_set_template_from_resource (GTK_WIDGET_CLASS (class),
+                                                     "/org/gtk/exampleapp/window.ui");
+        gtk_widget_class_bind_child (GTK_WIDGET_CLASS (class), ExampleAppWindowPrivate, stack);
+}
+
+ExampleAppWindow *
+example_app_window_new (ExampleApp *app)
+{
+        return g_object_new (EXAMPLE_APP_WINDOW_TYPE, "application", app, NULL);
+}
+
+void
+example_app_window_open (ExampleAppWindow *win,
+                         GFile            *file)
+{
+        ExampleAppWindowPrivate *priv = example_app_window_get_instance_private (win);
+        gchar *basename;
+        GtkWidget *scrolled, *view;
+        gchar *contents;
+        gsize length;
+
+        basename = g_file_get_basename (file);
+
+        scrolled = gtk_scrolled_window_new (NULL, NULL);
+        gtk_widget_show (scrolled);
+        gtk_widget_set_hexpand (scrolled, TRUE);
+        gtk_widget_set_vexpand (scrolled, TRUE);
+        view = gtk_text_view_new ();
+        gtk_text_view_set_editable (GTK_TEXT_VIEW (view), FALSE);
+        gtk_text_view_set_cursor_visible (GTK_TEXT_VIEW (view), FALSE);
+        gtk_widget_show (view);
+        gtk_container_add (GTK_CONTAINER (scrolled), view);
+        gtk_stack_add_titled (GTK_STACK (priv->stack), scrolled, basename, basename);
+
+        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);
+        }
+
+        g_free (basename);
+}