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63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/* Layout Manager/Transition
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*
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* This demo shows a simple example of a custom layout manager
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* and a widget using it. The layout manager places the children
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* of the widget in a grid or a circle.
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*
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* The widget is animating the transition between the two layouts.
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*
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* Click to start the transition.
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*/
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#include <gtk/gtk.h>
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#include "demowidget.h"
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#include "demochild.h"
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GtkWidget *
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do_layoutmanager (GtkWidget *parent)
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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 *widget;
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GtkWidget *child;
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const char *color[] = {
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"red", "orange", "yellow", "green",
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"blue", "grey", "magenta", "lime",
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"yellow", "firebrick", "aqua", "purple",
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"tomato", "pink", "thistle", "maroon"
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};
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int i;
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window = gtk_window_new ();
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gtk_window_set_title (GTK_WINDOW (window), "Layout Manager—Transition");
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gtk_window_set_default_size (GTK_WINDOW (window), 600, 600);
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g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
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widget = demo_widget_new ();
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for (i = 0; i < 16; i++)
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{
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child = demo_child_new (color[i]);
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gtk_widget_set_margin_start (child, 4);
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gtk_widget_set_margin_end (child, 4);
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gtk_widget_set_margin_top (child, 4);
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gtk_widget_set_margin_bottom (child, 4);
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demo_widget_add_child (DEMO_WIDGET (widget), child);
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}
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gtk_window_set_child (GTK_WINDOW (window), widget);
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_show (window);
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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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