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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "gtkbin.h"
static void gtk_bin_class_init (GtkBinClass *klass);
static void gtk_bin_init (GtkBin *bin);
static void gtk_bin_map (GtkWidget *widget);
static void gtk_bin_unmap (GtkWidget *widget);
static void gtk_bin_draw (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_bin_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_bin_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_bin_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_bin_foreach (GtkContainer *container,
GtkCallback callback,
gpointer callback_data);
static GtkContainerClass *parent_class = NULL;
guint
gtk_bin_get_type ()
{
static guint bin_type = 0;
if (!bin_type)
{
GtkTypeInfo bin_info =
{
"GtkBin",
sizeof (GtkBin),
sizeof (GtkBinClass),
(GtkClassInitFunc) gtk_bin_class_init,
(GtkObjectInitFunc) gtk_bin_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL,
};
bin_type = gtk_type_unique (gtk_container_get_type (), &bin_info);
}
return bin_type;
}
static void
gtk_bin_class_init (GtkBinClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
parent_class = gtk_type_class (gtk_container_get_type ());
widget_class->map = gtk_bin_map;
widget_class->unmap = gtk_bin_unmap;
widget_class->draw = gtk_bin_draw;
widget_class->expose_event = gtk_bin_expose;
container_class->add = gtk_bin_add;
container_class->remove = gtk_bin_remove;
container_class->foreach = gtk_bin_foreach;
}
static void
gtk_bin_init (GtkBin *bin)
{
GTK_WIDGET_SET_FLAGS (bin, GTK_NO_WINDOW);
bin->child = NULL;
}
static void
gtk_bin_map (GtkWidget *widget)
{
GtkBin *bin;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BIN (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
bin = GTK_BIN (widget);
if (!GTK_WIDGET_NO_WINDOW (widget))
gdk_window_show (widget->window);
else
gtk_widget_queue_draw (widget);
if (bin->child &&
GTK_WIDGET_VISIBLE (bin->child) &&
!GTK_WIDGET_MAPPED (bin->child))
gtk_widget_map (bin->child);
}
static void
gtk_bin_unmap (GtkWidget *widget)
{
GtkBin *bin;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BIN (widget));
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
bin = GTK_BIN (widget);
if (GTK_WIDGET_NO_WINDOW (widget))
gdk_window_clear_area (widget->window,
widget->allocation.x,
widget->allocation.y,
widget->allocation.width,
widget->allocation.height);
else
gdk_window_hide (widget->window);
if (bin->child &&
GTK_WIDGET_VISIBLE (bin->child) &&
GTK_WIDGET_MAPPED (bin->child))
gtk_widget_unmap (bin->child);
}
static void
gtk_bin_draw (GtkWidget *widget,
GdkRectangle *area)
{
GtkBin *bin;
GdkRectangle child_area;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BIN (widget));
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
{
bin = GTK_BIN (widget);
if (bin->child &&
gtk_widget_intersect (bin->child, area, &child_area))
gtk_widget_draw (bin->child, &child_area);
}
}
static gint
gtk_bin_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkBin *bin;
GdkEventExpose child_event;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_BIN (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
bin = GTK_BIN (widget);
child_event = *event;
if (bin->child &&
GTK_WIDGET_NO_WINDOW (bin->child) &&
gtk_widget_intersect (bin->child, &event->area, &child_event.area))
gtk_widget_event (bin->child, (GdkEvent*) &child_event);
}
return FALSE;
}
static void
gtk_bin_add (GtkContainer *container,
GtkWidget *widget)
{
GtkBin *bin;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_BIN (container));
g_return_if_fail (widget != NULL);
bin = GTK_BIN (container);
if (!bin->child)
{
gtk_widget_set_parent (widget, GTK_WIDGET (container));
if (GTK_WIDGET_VISIBLE (widget->parent))
{
if (GTK_WIDGET_REALIZED (widget->parent) &&
!GTK_WIDGET_REALIZED (widget))
gtk_widget_realize (widget);
if (GTK_WIDGET_MAPPED (widget->parent) &&
!GTK_WIDGET_MAPPED (widget))
gtk_widget_map (widget);
}
bin->child = widget;
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
gtk_widget_queue_resize (widget);
}
}
static void
gtk_bin_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkBin *bin;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_BIN (container));
g_return_if_fail (widget != NULL);
bin = GTK_BIN (container);
if (bin->child == widget)
{
gtk_widget_unparent (widget);
bin->child = NULL;
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
gtk_widget_queue_resize (GTK_WIDGET (container));
}
}
static void
gtk_bin_foreach (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
GtkBin *bin;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_BIN (container));
g_return_if_fail (callback != NULL);
bin = GTK_BIN (container);
if (bin->child)
(* callback) (bin->child, callback_data);
}
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