gtk2/demos/gtk-demo/headerbar.c

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/* Header Bar
*
* GtkHeaderBar is a container that is suitable for implementing
* window titlebars. One of its features is that it can position
* a title (and optional subtitle) centered with regard to the
* full width, regardless of variable-width content at the left
* or right.
*
* It is commonly used with gtk_window_set_titlebar()
*/
#include <gtk/gtk.h>
GtkWidget *
do_headerbar (GtkWidget *do_widget)
{
static GtkWidget *window = NULL;
GtkWidget *header;
GtkWidget *button;
GtkWidget *box;
GtkWidget *image;
GIcon *icon;
if (!window)
{
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_display (GTK_WINDOW (window), gtk_widget_get_display (do_widget));
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
header = gtk_header_bar_new ();
gtk_header_bar_set_show_title_buttons (GTK_HEADER_BAR (header), TRUE);
gtk_header_bar_set_title (GTK_HEADER_BAR (header), "Welcome to Facebook - Log in, sign up or learn more");
gtk_header_bar_set_has_subtitle (GTK_HEADER_BAR (header), FALSE);
button = gtk_button_new ();
icon = g_themed_icon_new ("mail-send-receive-symbolic");
image = gtk_image_new_from_gicon (icon);
g_object_unref (icon);
gtk_container_add (GTK_CONTAINER (button), image);
gtk_header_bar_pack_end (GTK_HEADER_BAR (header), button);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_style_context_add_class (gtk_widget_get_style_context (box), "linked");
button = gtk_button_new ();
gtk_container_add (GTK_CONTAINER (button), gtk_image_new_from_icon_name ("pan-start-symbolic"));
gtk_container_add (GTK_CONTAINER (box), button);
button = gtk_button_new ();
gtk_container_add (GTK_CONTAINER (button), gtk_image_new_from_icon_name ("pan-end-symbolic"));
gtk_container_add (GTK_CONTAINER (box), button);
gtk_header_bar_pack_start (GTK_HEADER_BAR (header), box);
gtk_window_set_titlebar (GTK_WINDOW (window), header);
gtk_container_add (GTK_CONTAINER (window), gtk_text_view_new ());
}
if (!gtk_widget_get_visible (window))
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gtk_widget_show (window);
else
gtk_widget_destroy (window);
return window;
}