* 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
+ * modify it under the terms of the GNU Lesser 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.
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU Library General Public
+ * You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
+
+/*
+ * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GTK+ Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
#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,
+static void gtk_bin_forall (GtkContainer *container,
+ gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static GtkType gtk_bin_child_type (GtkContainer*container);
static GtkContainerClass *parent_class = NULL;
-guint
+GtkType
gtk_bin_get_type (void)
{
- static guint bin_type = 0;
+ static GtkType bin_type = 0;
if (!bin_type)
{
- GtkTypeInfo bin_info =
+ static const GtkTypeInfo bin_info =
{
"GtkBin",
sizeof (GtkBin),
sizeof (GtkBinClass),
(GtkClassInitFunc) gtk_bin_class_init,
(GtkObjectInitFunc) gtk_bin_init,
- (GtkArgSetFunc) NULL,
- (GtkArgGetFunc) NULL,
+ /* reserved_1 */ NULL,
+ /* reserved_2 */ NULL,
+ (GtkClassInitFunc) NULL,
};
- bin_type = gtk_type_unique (gtk_container_get_type (), &bin_info);
+ bin_type = gtk_type_unique (GTK_TYPE_CONTAINER, &bin_info);
}
return bin_type;
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;
+ parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
container_class->add = gtk_bin_add;
container_class->remove = gtk_bin_remove;
- container_class->foreach = gtk_bin_foreach;
+ container_class->forall = gtk_bin_forall;
container_class->child_type = gtk_bin_child_type;
}
return GTK_TYPE_NONE;
}
-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)
+ GtkWidget *child)
{
GtkBin *bin;
- g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_BIN (container));
- g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_WIDGET (child));
bin = GTK_BIN (container);
- g_return_if_fail (bin->child == NULL);
- gtk_widget_set_parent (widget, GTK_WIDGET (container));
-
- if (GTK_WIDGET_VISIBLE (widget->parent))
+ if (bin->child != NULL)
{
- 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);
+ g_warning ("Attempting to add a widget with type %s to a %s, "
+ "but as a GtkBin subclass a %s can only contain one widget at a time; "
+ "it already contains a widget of type %s",
+ g_type_name (G_OBJECT_TYPE (child)),
+ g_type_name (G_OBJECT_TYPE (bin)),
+ g_type_name (G_OBJECT_TYPE (bin)),
+ g_type_name (G_OBJECT_TYPE (bin->child)));
+ return;
}
-
- bin->child = widget;
-
- if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
- gtk_widget_queue_resize (widget);
+
+ gtk_widget_set_parent (child, GTK_WIDGET (bin));
+ bin->child = child;
}
static void
gtk_bin_remove (GtkContainer *container,
- GtkWidget *widget)
+ GtkWidget *child)
{
GtkBin *bin;
+ gboolean widget_was_visible;
- g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_BIN (container));
- g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_WIDGET (child));
bin = GTK_BIN (container);
+ g_return_if_fail (bin->child == child);
- if (bin->child == widget)
- {
- gboolean widget_was_visible = GTK_WIDGET_VISIBLE (widget);
-
- gtk_widget_unparent (widget);
- bin->child = NULL;
-
- if (widget_was_visible && GTK_WIDGET_VISIBLE (container))
- gtk_widget_queue_resize (GTK_WIDGET (container));
- }
+ widget_was_visible = GTK_WIDGET_VISIBLE (child);
+
+ gtk_widget_unparent (child);
+ bin->child = NULL;
+
+ /* queue resize regardless of GTK_WIDGET_VISIBLE (container),
+ * since that's what is needed by toplevels, which derive from GtkBin.
+ */
+ if (widget_was_visible)
+ gtk_widget_queue_resize (GTK_WIDGET (container));
}
static void
-gtk_bin_foreach (GtkContainer *container,
- GtkCallback callback,
- gpointer callback_data)
+gtk_bin_forall (GtkContainer *container,
+ gboolean include_internals,
+ 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);
if (bin->child)
(* callback) (bin->child, callback_data);
}
+
+/**
+ * gtk_bin_get_child:
+ * @bin: a #GtkBin
+ *
+ * Gets the child of the #GtkBin, or %NULL if the bin contains
+ * no child widget. The returned widget does not have a reference
+ * added, so you do not need to unref it.
+ *
+ * Return value: pointer to child of the #GtkBin
+ **/
+GtkWidget*
+gtk_bin_get_child (GtkBin *bin)
+{
+ g_return_val_if_fail (GTK_IS_BIN (bin), NULL);
+
+ return bin->child;
+}
projects / ~andy / gtk / blobdiff