static GtkWidget *
content_area_new (void)
{
GtkWidget *notebook;
notebook = gtk_notebook_new ();
gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
drawing_area_new (),
gtk_label_new ("First"));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
drawing_area_new (),
gtk_label_new ("Second"));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook),
drawing_area_new (),
gtk_label_new ("Third"));
return notebook;
}
GtkWidget *
do_paint (GtkWidget *toplevel)
{
static GtkWidget *window = NULL;
if (!window)
{
GtkWidget *draw_area, *headerbar, *colorbutton;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
draw_area = drawing_area_new ();
gtk_container_add (GTK_CONTAINER (window), draw_area);
headerbar = gtk_header_bar_new ();
gtk_header_bar_set_title (GTK_HEADER_BAR (headerbar), "Paint");
gtk_header_bar_set_show_title_buttons (GTK_HEADER_BAR (headerbar), TRUE);
colorbutton = gtk_color_button_new ();
g_signal_connect (colorbutton, "color-set",
G_CALLBACK (color_button_color_set), draw_area);
g_signal_connect (draw_area, "color-set",
G_CALLBACK (drawing_area_color_set), colorbutton);
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (colorbutton),
&(GdkRGBA) { 0, 0, 0, 1 });
gtk_header_bar_pack_end (GTK_HEADER_BAR (headerbar), colorbutton);
gtk_window_set_titlebar (GTK_WINDOW (window), headerbar);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show (window);
else
gtk_widget_destroy (window);
return window;
}
