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