54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
|
/* Masking
|
||
|
|
*
|
||
|
|
* Demonstrates mask nodes.
|
||
|
|
*
|
||
|
|
* This demo uses a text node as mask for
|
||
|
|
* an animated linear gradient.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <gtk/gtk.h>
|
||
|
|
#include "demo4widget.h"
|
||
|
|
|
||
|
|
|
||
|
|
GtkWidget *
|
||
|
|
do_mask (GtkWidget *do_widget)
|
||
|
|
{
|
||
|
|
static GtkWidget *window = NULL;
|
||
|
|
|
||
|
|
if (!window)
|
||
|
|
{
|
||
|
|
GtkWidget *box;
|
||
|
|
GtkWidget *demo;
|
||
|
|
GtkWidget *scale;
|
||
|
|
|
||
|
|
window = gtk_window_new ();
|
||
|
|
gtk_window_set_title (GTK_WINDOW (window), "Mask Nodes");
|
||
|
|
gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
|
||
|
|
gtk_window_set_display (GTK_WINDOW (window),
|
||
|
|
gtk_widget_get_display (do_widget));
|
||
|
|
g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
|
||
|
|
|
||
|
|
box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
|
||
|
|
gtk_window_set_child (GTK_WINDOW (window), box);
|
||
|
|
|
||
|
|
demo = demo4_widget_new ();
|
||
|
|
gtk_widget_set_hexpand (demo, TRUE);
|
||
|
|
gtk_widget_set_vexpand (demo, TRUE);
|
||
|
|
|
||
|
|
gtk_box_append (GTK_BOX (box), demo);
|
||
|
|
|
||
|
|
scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, 0, 1, 0.1);
|
||
|
|
gtk_range_set_value (GTK_RANGE (scale), 0.5);
|
||
|
|
g_object_bind_property (gtk_range_get_adjustment (GTK_RANGE (scale)), "value", demo, "progress", 0);
|
||
|
|
|
||
|
|
gtk_box_append (GTK_BOX (box), scale);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!gtk_widget_get_visible (window))
|
||
|
|
gtk_widget_set_visible (window, TRUE);
|
||
|
|
else
|
||
|
|
gtk_window_destroy (GTK_WINDOW (window));
|
||
|
|
|
||
|
|
return window;
|
||
|
|
}
|