gtk/demos/gtk-demo/theming_custom_css.c
2012-05-30 13:17:23 -04:00

67 lines
2.1 KiB
C

/* CSS Theming/Custom CSS :: fancy.css
*
* GTK+ uses CSS for theming. If required, applications can
* install their own custom CSS style provider to achieve
* special effects.
*
* Doing this has the downside that your application will no
* longer react to the users theme preferences, so this should
* be used sparingly.
*/
#include <gtk/gtk.h>
#include "demo-common.h"
static GtkWidget *window = NULL;
GtkWidget *
do_theming_custom_css (GtkWidget *do_widget)
{
GtkWidget *box;
GtkWidget *button;
GtkCssProvider *provider;
GBytes *bytes;
if (!window)
{
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_screen (GTK_WINDOW (window),
gtk_widget_get_screen (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Custom CSS");
gtk_container_set_border_width (GTK_CONTAINER (window), 18);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_container_add (GTK_CONTAINER (window), box);
button = gtk_button_new_with_label ("Plain");
gtk_box_pack_start (GTK_BOX (box), button, TRUE, TRUE, 0);
button = gtk_button_new_with_label ("Fancy");
gtk_box_pack_start (GTK_BOX (box), button, TRUE, TRUE, 0);
gtk_widget_set_name (button, "fancy");
provider = gtk_css_provider_new ();
bytes = g_resources_lookup_data ("/theming_custom_css/gtk.css", 0, NULL);
gtk_css_provider_load_from_data (provider, g_bytes_get_data (bytes, NULL),
g_bytes_get_size (bytes), NULL);
gtk_style_context_add_provider_for_screen (gtk_widget_get_screen (do_widget),
GTK_STYLE_PROVIDER (provider),
GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
g_object_unref (provider);
g_bytes_unref (bytes);
gtk_widget_show_all (box);
}
if (!gtk_widget_get_visible (window))
{
gtk_widget_show (window);
}
else
{
gtk_widget_destroy (window);
window = NULL;
}
return window;
}