1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
28 #include "gtksignal.h"
29 #include "gtkinvisible.h"
31 static void gtk_invisible_class_init (GtkInvisibleClass *klass);
32 static void gtk_invisible_init (GtkInvisible *invisible);
33 static void gtk_invisible_destroy (GtkObject *object);
34 static void gtk_invisible_realize (GtkWidget *widget);
35 static void gtk_invisible_style_set (GtkWidget *widget,
36 GtkStyle *previous_style);
37 static void gtk_invisible_show (GtkWidget *widget);
38 static void gtk_invisible_size_allocate (GtkWidget *widget,
39 GtkAllocation *allocation);
42 gtk_invisible_get_type (void)
44 static GtkType invisible_type = 0;
48 static const GtkTypeInfo invisible_info =
51 sizeof (GtkInvisible),
52 sizeof (GtkInvisibleClass),
53 (GtkClassInitFunc) gtk_invisible_class_init,
54 (GtkObjectInitFunc) gtk_invisible_init,
55 /* reserved_1 */ NULL,
56 /* reserved_2 */ NULL,
57 (GtkClassInitFunc) NULL,
60 invisible_type = gtk_type_unique (GTK_TYPE_WIDGET, &invisible_info);
63 return invisible_type;
67 gtk_invisible_class_init (GtkInvisibleClass *class)
69 GtkObjectClass *object_class;
70 GtkWidgetClass *widget_class;
72 widget_class = (GtkWidgetClass*) class;
73 object_class = (GtkObjectClass*) class;
75 widget_class->realize = gtk_invisible_realize;
76 widget_class->style_set = gtk_invisible_style_set;
77 widget_class->show = gtk_invisible_show;
78 widget_class->size_allocate = gtk_invisible_size_allocate;
80 object_class->destroy = gtk_invisible_destroy;
84 gtk_invisible_init (GtkInvisible *invisible)
86 GTK_WIDGET_UNSET_FLAGS (invisible, GTK_NO_WINDOW);
87 GTK_WIDGET_SET_FLAGS (invisible, GTK_TOPLEVEL);
89 gtk_widget_ref (GTK_WIDGET (invisible));
90 gtk_object_sink (GTK_OBJECT (invisible));
92 invisible->has_user_ref_count = TRUE;
96 gtk_invisible_destroy (GtkObject *object)
98 GtkInvisible *invisible = GTK_INVISIBLE (object);
100 if (invisible->has_user_ref_count)
102 invisible->has_user_ref_count = FALSE;
103 gtk_widget_unref (GTK_WIDGET (invisible));
108 gtk_invisible_new (void)
110 GtkWidget *result = GTK_WIDGET (gtk_type_new (GTK_TYPE_INVISIBLE));
111 gtk_widget_realize (result);
117 gtk_invisible_realize (GtkWidget *widget)
119 GdkWindowAttr attributes;
120 gint attributes_mask;
122 g_return_if_fail (GTK_IS_INVISIBLE (widget));
124 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
128 attributes.width = 10;
129 attributes.height = 10;
130 attributes.window_type = GDK_WINDOW_TEMP;
131 attributes.wclass = GDK_INPUT_ONLY;
132 attributes.override_redirect = TRUE;
133 attributes.event_mask = gtk_widget_get_events (widget);
135 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_NOREDIR;
137 widget->window = gdk_window_new (NULL, &attributes, attributes_mask);
138 gdk_window_set_user_data (widget->window, widget);
140 widget->style = gtk_style_attach (widget->style, widget->window);
144 gtk_invisible_style_set (GtkWidget *widget,
145 GtkStyle *previous_style)
147 /* Don't chain up to parent implementation */
151 gtk_invisible_show (GtkWidget *widget)
153 g_return_if_fail (widget != NULL);
155 GTK_WIDGET_SET_FLAGS (widget, GTK_VISIBLE);
156 gtk_widget_map (widget);
160 gtk_invisible_size_allocate (GtkWidget *widget,
161 GtkAllocation *allocation)
163 widget->allocation = *allocation;