mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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609e04ddcf
Clean up the code of many examples in minor ways, fix some memory leaks, and avoid the use of dialogs where a regular toplevel works just as well.
92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
/* Revealer
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*
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* GtkRevealer is a container that animates showing and hiding
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* of its sole child with nice transitions.
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*/
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#include <gtk/gtk.h>
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static gint count = 0;
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static guint timeout = 0;
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static void
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change_direction (GtkRevealer *revealer)
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{
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gboolean revealed;
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revealed = gtk_revealer_get_child_revealed (revealer);
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gtk_revealer_set_reveal_child (revealer, !revealed);
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}
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static gboolean
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reveal_one (gpointer data)
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{
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GtkWidget *window = data;
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GtkBuilder *builder;
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gchar *name;
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GtkRevealer *revealer;
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builder = GTK_BUILDER (g_object_get_data (G_OBJECT (window), "builder"));
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name = g_strdup_printf ("revealer%d", count);
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revealer = (GtkRevealer *)gtk_builder_get_object (builder, name);
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gtk_revealer_set_reveal_child (revealer, TRUE);
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g_signal_connect (revealer, "notify::child-revealed",
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G_CALLBACK (change_direction), NULL);
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count++;
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if (count >= 9)
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{
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timeout = 0;
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return FALSE;
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}
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else
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return TRUE;
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}
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static GtkWidget *window = NULL;
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static void
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on_destroy (gpointer data)
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{
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window = NULL;
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if (timeout != 0)
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{
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g_source_remove (timeout);
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timeout = 0;
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}
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}
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GtkWidget *
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do_revealer (GtkWidget *do_widget)
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{
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if (!window)
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{
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GtkBuilder *builder;
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builder = gtk_builder_new_from_resource ("/revealer/revealer.ui");
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gtk_builder_connect_signals (builder, NULL);
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window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
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gtk_window_set_screen (GTK_WINDOW (window),
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gtk_widget_get_screen (do_widget));
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g_signal_connect (window, "destroy",
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G_CALLBACK (on_destroy), NULL);
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g_object_set_data_full (G_OBJECT (window), "builder", builder, g_object_unref);
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}
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if (!gtk_widget_get_visible (window))
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{
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count = 0;
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timeout = g_timeout_add (690, reveal_one, window);
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gtk_widget_show_all (window);
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}
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else
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{
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gtk_widget_destroy (window);
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}
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return window;
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}
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