* 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_add (GtkContainer *container,
- GtkWidget *widget);
-static void gtk_bin_remove (GtkContainer *container,
- GtkWidget *widget);
-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;
-
-
-GtkType
-gtk_bin_get_type (void)
-{
- static guint bin_type = 0;
-
- if (!bin_type)
- {
- static const GtkTypeInfo bin_info =
- {
- "GtkBin",
- sizeof (GtkBin),
- sizeof (GtkBinClass),
- (GtkClassInitFunc) gtk_bin_class_init,
- (GtkObjectInitFunc) gtk_bin_init,
- /* reserved_1 */ NULL,
- /* reserved_2 */ NULL,
- (GtkClassInitFunc) NULL,
- };
-
- bin_type = gtk_type_unique (GTK_TYPE_CONTAINER, &bin_info);
- }
+/**
+ * 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.
+ */
- return bin_type;
-}
+#include "config.h"
+#include "gtkbin.h"
+#include "gtkextendedlayout.h"
+#include "gtkintl.h"
+#include "gtkalias.h"
+
+static void gtk_bin_add (GtkContainer *container,
+ GtkWidget *widget);
+static void gtk_bin_remove (GtkContainer *container,
+ GtkWidget *widget);
+static void gtk_bin_forall (GtkContainer *container,
+ gboolean include_internals,
+ GtkCallback callback,
+ gpointer callback_data);
+static GType gtk_bin_child_type (GtkContainer *container);
+
+
+static void gtk_bin_extended_layout_init (GtkExtendedLayoutIface *iface);
+static gboolean gtk_bin_is_height_for_width (GtkExtendedLayout *layout);
+static void gtk_bin_get_width_for_height (GtkExtendedLayout *layout,
+ gint height,
+ gint *minimum_width,
+ gint *natural_width);
+static void gtk_bin_get_height_for_width (GtkExtendedLayout *layout,
+ gint width,
+ gint *minimum_height,
+ gint *natural_height);
+
+static GtkExtendedLayoutIface *parent_extended_layout_iface;
+
+G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GtkBin, gtk_bin, GTK_TYPE_CONTAINER,
+ G_IMPLEMENT_INTERFACE (GTK_TYPE_EXTENDED_LAYOUT,
+ gtk_bin_extended_layout_init))
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_TYPE_CONTAINER);
-
container_class->add = gtk_bin_add;
container_class->remove = gtk_bin_remove;
container_class->forall = gtk_bin_forall;
static void
gtk_bin_init (GtkBin *bin)
{
- GTK_WIDGET_SET_FLAGS (bin, GTK_NO_WINDOW);
+ gtk_widget_set_has_window (GTK_WIDGET (bin), FALSE);
bin->child = NULL;
}
-static GtkType
+static GType
gtk_bin_child_type (GtkContainer *container)
{
if (!GTK_BIN (container)->child)
return GTK_TYPE_WIDGET;
else
- return GTK_TYPE_NONE;
+ return G_TYPE_NONE;
}
static void
gtk_bin_add (GtkContainer *container,
GtkWidget *child)
{
- GtkBin *bin;
-
- g_return_if_fail (GTK_IS_BIN (container));
- g_return_if_fail (GTK_IS_WIDGET (child));
-
- bin = GTK_BIN (container);
+ GtkBin *bin = GTK_BIN (container);
if (bin->child != NULL)
{
gtk_bin_remove (GtkContainer *container,
GtkWidget *child)
{
- GtkBin *bin;
+ GtkBin *bin = GTK_BIN (container);
gboolean widget_was_visible;
- g_return_if_fail (GTK_IS_BIN (container));
- g_return_if_fail (GTK_IS_WIDGET (child));
-
- bin = GTK_BIN (container);
g_return_if_fail (bin->child == child);
- widget_was_visible = GTK_WIDGET_VISIBLE (child);
+ widget_was_visible = gtk_widget_get_visible (child);
gtk_widget_unparent (child);
bin->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)
GtkCallback callback,
gpointer callback_data)
{
- GtkBin *bin;
+ GtkBin *bin = GTK_BIN (container);
+
+ if (bin->child)
+ (* callback) (bin->child, callback_data);
+}
+
+
+/* GtkBin widgets define the padding and borders independantly so
+ * we cannot provide a generic get_desired_size() for the same reason
+ * we never implemented size_request() here.
+ *
+ * But for cases where the GtkBin class's padding is constant and
+ * does not vary based on allocation (most cases), we can at least
+ * deduce a common code path for the get_width_for_height()/get_height_for_width()
+ * cases by using the delta of the base size requsts.
+ */
+static void
+gtk_bin_extended_layout_init (GtkExtendedLayoutIface *iface)
+{
+ parent_extended_layout_iface = g_type_interface_peek_parent (iface);
+
+ iface->is_height_for_width = gtk_bin_is_height_for_width;
+ iface->get_width_for_height = gtk_bin_get_width_for_height;
+ iface->get_height_for_width = gtk_bin_get_height_for_width;
+}
+
+static gboolean
+gtk_bin_is_height_for_width (GtkExtendedLayout *layout)
+{
+ GtkBin *bin = GTK_BIN (layout);
+
+ if (bin->child)
+ return gtk_extended_layout_is_height_for_width (GTK_EXTENDED_LAYOUT (bin->child));
+
+ return TRUE;
+}
+
+static void
+get_child_padding_delta (GtkBin *bin,
+ gint *delta_h,
+ gint *delta_v)
+{
+ gint hmin, vmin, child_hmin, child_vmin;
+
+ gtk_extended_layout_get_desired_width (GTK_EXTENDED_LAYOUT (bin), &hmin, NULL);
+ gtk_extended_layout_get_desired_height (GTK_EXTENDED_LAYOUT (bin), &vmin, NULL);
+
+ gtk_extended_layout_get_desired_width (GTK_EXTENDED_LAYOUT (bin->child), &child_hmin, NULL);
+ gtk_extended_layout_get_desired_height (GTK_EXTENDED_LAYOUT (bin->child), &child_vmin, NULL);
- g_return_if_fail (GTK_IS_BIN (container));
- g_return_if_fail (callback != NULL);
+ *delta_h = hmin - child_hmin;
+ *delta_v = vmin - child_vmin;
+}
- bin = GTK_BIN (container);
+static void
+gtk_bin_get_width_for_height (GtkExtendedLayout *layout,
+ gint height,
+ gint *minimum_width,
+ gint *natural_width)
+{
+ GtkBin *bin = GTK_BIN (layout);
+ gint hdelta, vdelta, child_min, child_nat;
if (bin->child)
- (* callback) (bin->child, callback_data);
+ {
+ get_child_padding_delta (bin, &hdelta, &vdelta);
+
+ gtk_extended_layout_get_width_for_height (GTK_EXTENDED_LAYOUT (bin->child),
+ height - vdelta,
+ &child_min, &child_nat);
+
+ if (minimum_width)
+ *minimum_width = child_min + hdelta;
+
+ if (natural_width)
+ *natural_width = child_nat + hdelta;
+ }
+ else
+ GTK_EXTENDED_LAYOUT_GET_IFACE (layout)->get_desired_width (layout, minimum_width, natural_width);
}
+static void
+gtk_bin_get_height_for_width (GtkExtendedLayout *layout,
+ gint width,
+ gint *minimum_height,
+ gint *natural_height)
+{
+ GtkBin *bin = GTK_BIN (layout);
+ gint hdelta, vdelta, child_min, child_nat;
+
+ if (bin->child)
+ {
+ get_child_padding_delta (bin, &hdelta, &vdelta);
+
+ gtk_extended_layout_get_height_for_width (GTK_EXTENDED_LAYOUT (bin->child),
+ width - hdelta,
+ &child_min, &child_nat);
+
+ if (minimum_height)
+ *minimum_height = child_min + vdelta;
+
+ if (natural_height)
+ *natural_height = child_nat + vdelta;
+ }
+ else
+ GTK_EXTENDED_LAYOUT_GET_IFACE (layout)->get_desired_height (layout, minimum_height, natural_height);
+}
+
+
/**
* 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
+ *
+ * Return value: (transfer none): pointer to child of the #GtkBin
**/
GtkWidget*
gtk_bin_get_child (GtkBin *bin)
return bin->child;
}
+
+#define __GTK_BIN_C__
+#include "gtkaliasdef.c"
projects / ~andy / gtk / blobdiff