-/* GTK - The GTK+ Toolkit
+/* 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
* Lesser General Public License for more details.
*
* 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.
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
+/**
+ * SECTION:gtkbin
+ * @Short_description: A container with just one child
+ * @Title: GtkBin
+ *
+ * The #GtkBin widget is a container with just one child.
+ * It is not very useful itself, but it is useful for deriving subclasses,
+ * since it provides common code needed for handling a single child widget.
+ *
+ * Many GTK+ widgets are subclasses of #GtkBin, including #GtkWindow,
+ * #GtkButton, #GtkFrame, #GtkHandleBox or #GtkScrolledWindow.
+ */
+
#include "config.h"
#include "gtkbin.h"
+#include "gtksizerequest.h"
#include "gtkintl.h"
-#include "gtkalias.h"
+
+
+struct _GtkBinPrivate
+{
+ GtkWidget *child;
+};
static void gtk_bin_add (GtkContainer *container,
GtkWidget *widget);
gpointer callback_data);
static GType gtk_bin_child_type (GtkContainer *container);
+static void gtk_bin_get_preferred_width (GtkWidget *widget,
+ gint *minimum_width,
+ gint *natural_width);
+static void gtk_bin_get_preferred_height (GtkWidget *widget,
+ gint *minimum_height,
+ gint *natural_height);
+static void gtk_bin_get_preferred_width_for_height (GtkWidget *widget,
+ gint height,
+ gint *minimum_width,
+ gint *natural_width);
+static void gtk_bin_get_preferred_height_for_width (GtkWidget *widget,
+ gint width,
+ gint *minimum_height,
+ gint *natural_height);
+static void gtk_bin_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
G_DEFINE_ABSTRACT_TYPE (GtkBin, gtk_bin, GTK_TYPE_CONTAINER)
static void
gtk_bin_class_init (GtkBinClass *class)
{
- GtkContainerClass *container_class;
+ GtkWidgetClass *widget_class = (GtkWidgetClass*) class;
+ GtkContainerClass *container_class = (GtkContainerClass*) class;
- container_class = (GtkContainerClass*) class;
+ widget_class->get_preferred_width = gtk_bin_get_preferred_width;
+ widget_class->get_preferred_height = gtk_bin_get_preferred_height;
+ widget_class->get_preferred_width_for_height = gtk_bin_get_preferred_width_for_height;
+ widget_class->get_preferred_height_for_width = gtk_bin_get_preferred_height_for_width;
+ widget_class->size_allocate = gtk_bin_size_allocate;
container_class->add = gtk_bin_add;
container_class->remove = gtk_bin_remove;
container_class->forall = gtk_bin_forall;
container_class->child_type = gtk_bin_child_type;
+
+ g_type_class_add_private (class, sizeof (GtkBinPrivate));
}
static void
gtk_bin_init (GtkBin *bin)
{
- GTK_WIDGET_SET_FLAGS (bin, GTK_NO_WINDOW);
+ GtkBinPrivate *priv;
- bin->child = NULL;
+ bin->priv = G_TYPE_INSTANCE_GET_PRIVATE (bin,
+ GTK_TYPE_BIN,
+ GtkBinPrivate);
+ priv = bin->priv;
+
+ gtk_widget_set_has_window (GTK_WIDGET (bin), FALSE);
+
+ priv->child = NULL;
}
static GType
gtk_bin_child_type (GtkContainer *container)
{
- if (!GTK_BIN (container)->child)
+ GtkBinPrivate *priv = GTK_BIN (container)->priv;
+
+ if (!priv->child)
return GTK_TYPE_WIDGET;
else
return G_TYPE_NONE;
GtkWidget *child)
{
GtkBin *bin = GTK_BIN (container);
+ GtkBinPrivate *priv = bin->priv;
- if (bin->child != NULL)
+ if (priv->child != NULL)
{
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; "
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)));
+ g_type_name (G_OBJECT_TYPE (priv->child)));
return;
}
gtk_widget_set_parent (child, GTK_WIDGET (bin));
- bin->child = child;
+ priv->child = child;
}
static void
GtkWidget *child)
{
GtkBin *bin = GTK_BIN (container);
+ GtkBinPrivate *priv = bin->priv;
gboolean widget_was_visible;
- g_return_if_fail (bin->child == child);
+ g_return_if_fail (priv->child == child);
- widget_was_visible = GTK_WIDGET_VISIBLE (child);
+ widget_was_visible = gtk_widget_get_visible (child);
gtk_widget_unparent (child);
- bin->child = NULL;
+ priv->child = NULL;
- /* queue resize regardless of GTK_WIDGET_VISIBLE (container),
+ /* queue resize regardless of gtk_widget_get_visible (container),
* since that's what is needed by toplevels, which derive from GtkBin.
*/
if (widget_was_visible)
gpointer callback_data)
{
GtkBin *bin = GTK_BIN (container);
+ GtkBinPrivate *priv = bin->priv;
- if (bin->child)
- (* callback) (bin->child, callback_data);
+ if (priv->child)
+ (* callback) (priv->child, callback_data);
+}
+
+static int
+gtk_bin_get_effective_border_width (GtkBin *bin)
+{
+ if (GTK_CONTAINER_CLASS (GTK_BIN_GET_CLASS (bin))->_handle_border_width)
+ return 0;
+
+ return gtk_container_get_border_width (GTK_CONTAINER (bin));
+}
+
+static void
+gtk_bin_get_preferred_width (GtkWidget *widget,
+ gint *minimum_width,
+ gint *natural_width)
+{
+ GtkBin *bin = GTK_BIN (widget);
+ GtkBinPrivate *priv = bin->priv;
+ gint border_width;
+
+ *minimum_width = 0;
+ *natural_width = 0;
+
+ if (priv->child && gtk_widget_get_visible (priv->child))
+ {
+ gint child_min, child_nat;
+ gtk_widget_get_preferred_width (priv->child,
+ &child_min, &child_nat);
+ *minimum_width = child_min;
+ *natural_width = child_nat;
+ }
+
+ border_width = gtk_bin_get_effective_border_width (bin);
+ *minimum_width += 2 * border_width;
+ *natural_width += 2 * border_width;
+}
+
+static void
+gtk_bin_get_preferred_height (GtkWidget *widget,
+ gint *minimum_height,
+ gint *natural_height)
+{
+ GtkBin *bin = GTK_BIN (widget);
+ GtkBinPrivate *priv = bin->priv;
+ gint border_width;
+
+ *minimum_height = 0;
+ *natural_height = 0;
+
+ if (priv->child && gtk_widget_get_visible (priv->child))
+ {
+ gint child_min, child_nat;
+ gtk_widget_get_preferred_height (priv->child,
+ &child_min, &child_nat);
+ *minimum_height = child_min;
+ *natural_height = child_nat;
+ }
+
+ border_width = gtk_bin_get_effective_border_width (bin);
+ *minimum_height += 2 * border_width;
+ *natural_height += 2 * border_width;
+}
+
+static void
+gtk_bin_get_preferred_width_for_height (GtkWidget *widget,
+ gint height,
+ gint *minimum_width,
+ gint *natural_width)
+{
+ GtkBin *bin = GTK_BIN (widget);
+ GtkBinPrivate *priv = bin->priv;
+ gint border_width;
+
+ *minimum_width = 0;
+ *natural_width = 0;
+
+ border_width = gtk_bin_get_effective_border_width (bin);
+
+ if (priv->child && gtk_widget_get_visible (priv->child))
+ {
+ gint child_min, child_nat;
+ gtk_widget_get_preferred_width_for_height (priv->child, height - 2 * border_width,
+ &child_min, &child_nat);
+
+ *minimum_width = child_min;
+ *natural_width = child_nat;
+ }
+
+ *minimum_width += 2 * border_width;
+ *natural_width += 2 * border_width;
+}
+
+static void
+gtk_bin_get_preferred_height_for_width (GtkWidget *widget,
+ gint width,
+ gint *minimum_height,
+ gint *natural_height)
+{
+ GtkBin *bin = GTK_BIN (widget);
+ GtkBinPrivate *priv = bin->priv;
+ gint border_width;
+
+ *minimum_height = 0;
+ *natural_height = 0;
+
+ border_width = gtk_bin_get_effective_border_width (bin);
+
+ if (priv->child && gtk_widget_get_visible (priv->child))
+ {
+ gint child_min, child_nat;
+ gtk_widget_get_preferred_height_for_width (priv->child, width - 2 * border_width,
+ &child_min, &child_nat);
+
+ *minimum_height = child_min;
+ *natural_height = child_nat;
+ }
+
+ *minimum_height += 2 * border_width;
+ *natural_height += 2 * border_width;
+}
+
+static void
+gtk_bin_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ GtkBin *bin = GTK_BIN (widget);
+ GtkBinPrivate *priv = bin->priv;
+
+ gtk_widget_set_allocation (widget, allocation);
+
+ if (priv->child && gtk_widget_get_visible (priv->child))
+ {
+ GtkAllocation child_allocation;
+ gint border_width = gtk_bin_get_effective_border_width (bin);
+
+ child_allocation.x = allocation->x + border_width;
+ child_allocation.y = allocation->y + border_width;
+ child_allocation.width = allocation->width - 2 * border_width;
+ child_allocation.height = allocation->height - 2 * border_width;
+
+ gtk_widget_size_allocate (priv->child, &child_allocation);
+ }
}
/**
* 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
+ *
+ * Return value: (transfer none): 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;
+ return bin->priv->child;
}
-#define __GTK_BIN_C__
-#include "gtkaliasdef.c"
+void
+_gtk_bin_set_child (GtkBin *bin,
+ GtkWidget *widget)
+{
+ bin->priv->child = widget;
+}
projects / ~andy / gtk / blobdiff