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