forked from AuroraMiddleware/gtk
d2c35ec62a
This commit changes gtk_extended_layout_get_desired_size() for per dimension variants. Furthermore this commit reverts the actions done in size-groups for now as it needs a different approach. The natural width/height parameters added to aux_info have been changed for a per width cache for heights and a per height cache for widths. gtk-demo is still working, currently sizegroups are not taken into account as mentioned above - size groups need to be alerted both when the widths and heights are updated independantly and then that information needs to repropagate also to other extended layout implementors.
260 lines
7.8 KiB
C
260 lines
7.8 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gtkbin.h"
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#include "gtkextendedlayout.h"
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#include "gtkintl.h"
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#include "gtkalias.h"
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static void gtk_bin_add (GtkContainer *container,
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GtkWidget *widget);
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static void gtk_bin_remove (GtkContainer *container,
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GtkWidget *widget);
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static void gtk_bin_forall (GtkContainer *container,
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gboolean include_internals,
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GtkCallback callback,
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gpointer callback_data);
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static GType gtk_bin_child_type (GtkContainer *container);
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static void gtk_bin_extended_layout_init (GtkExtendedLayoutIface *iface);
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static void gtk_bin_get_width_for_height (GtkExtendedLayout *layout,
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gint height,
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gint *minimum_width,
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gint *natural_width);
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static void gtk_bin_get_height_for_width (GtkExtendedLayout *layout,
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gint width,
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gint *minimum_height,
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gint *natural_height);
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static GtkExtendedLayoutIface *parent_extended_layout_iface;
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G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GtkBin, gtk_bin, GTK_TYPE_CONTAINER,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_EXTENDED_LAYOUT,
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gtk_bin_extended_layout_init))
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static void
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gtk_bin_class_init (GtkBinClass *class)
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{
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GtkContainerClass *container_class;
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container_class = (GtkContainerClass*) class;
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container_class->add = gtk_bin_add;
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container_class->remove = gtk_bin_remove;
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container_class->forall = gtk_bin_forall;
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container_class->child_type = gtk_bin_child_type;
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}
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static void
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gtk_bin_init (GtkBin *bin)
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{
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gtk_widget_set_has_window (GTK_WIDGET (bin), FALSE);
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bin->child = NULL;
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}
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static GType
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gtk_bin_child_type (GtkContainer *container)
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{
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if (!GTK_BIN (container)->child)
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return GTK_TYPE_WIDGET;
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else
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return G_TYPE_NONE;
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}
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static void
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gtk_bin_add (GtkContainer *container,
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GtkWidget *child)
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{
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GtkBin *bin = GTK_BIN (container);
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if (bin->child != NULL)
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{
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g_warning ("Attempting to add a widget with type %s to a %s, "
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"but as a GtkBin subclass a %s can only contain one widget at a time; "
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"it already contains a widget of type %s",
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g_type_name (G_OBJECT_TYPE (child)),
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g_type_name (G_OBJECT_TYPE (bin)),
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g_type_name (G_OBJECT_TYPE (bin)),
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g_type_name (G_OBJECT_TYPE (bin->child)));
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return;
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}
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gtk_widget_set_parent (child, GTK_WIDGET (bin));
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bin->child = child;
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}
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static void
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gtk_bin_remove (GtkContainer *container,
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GtkWidget *child)
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{
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GtkBin *bin = GTK_BIN (container);
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gboolean widget_was_visible;
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g_return_if_fail (bin->child == child);
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widget_was_visible = gtk_widget_get_visible (child);
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gtk_widget_unparent (child);
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bin->child = NULL;
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/* queue resize regardless of gtk_widget_get_visible (container),
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* since that's what is needed by toplevels, which derive from GtkBin.
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*/
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if (widget_was_visible)
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gtk_widget_queue_resize (GTK_WIDGET (container));
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}
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static void
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gtk_bin_forall (GtkContainer *container,
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gboolean include_internals,
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GtkCallback callback,
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gpointer callback_data)
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{
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GtkBin *bin = GTK_BIN (container);
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if (bin->child)
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(* callback) (bin->child, callback_data);
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}
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/* GtkBin widgets define the padding and borders independantly so
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* we cannot provide a generic get_desired_size() for the same reason
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* we never implemented size_request() here.
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*
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* But for cases where the GtkBin class's padding is constant and
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* does not vary based on allocation (most cases), we can at least
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* deduce a common code path for the get_width_for_height()/get_height_for_width()
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* cases by using the delta of the base size requsts.
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*/
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static void
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gtk_bin_extended_layout_init (GtkExtendedLayoutIface *iface)
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{
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parent_extended_layout_iface = g_type_interface_peek_parent (iface);
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iface->get_width_for_height = gtk_bin_get_width_for_height;
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iface->get_height_for_width = gtk_bin_get_height_for_width;
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}
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static void
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get_child_padding_delta (GtkBin *bin,
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gint *delta_h,
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gint *delta_v)
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{
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gint hmin, vmin, child_hmin, child_vmin;
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gtk_extended_layout_get_desired_width (GTK_EXTENDED_LAYOUT (bin), &hmin, NULL);
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gtk_extended_layout_get_desired_height (GTK_EXTENDED_LAYOUT (bin), &vmin, NULL);
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gtk_extended_layout_get_desired_width (GTK_EXTENDED_LAYOUT (bin->child), &child_hmin, NULL);
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gtk_extended_layout_get_desired_height (GTK_EXTENDED_LAYOUT (bin->child), &child_vmin, NULL);
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*delta_h = hmin - child_hmin;
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*delta_v = vmin - child_vmin;
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}
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static void
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gtk_bin_get_width_for_height (GtkExtendedLayout *layout,
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gint height,
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gint *minimum_width,
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gint *natural_width)
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{
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GtkBin *bin = GTK_BIN (layout);
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gint hdelta, vdelta, child_min, child_nat;
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if (bin->child)
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{
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get_child_padding_delta (bin, &hdelta, &vdelta);
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gtk_extended_layout_get_width_for_height (GTK_EXTENDED_LAYOUT (bin->child),
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height - vdelta,
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&child_min, &child_nat);
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if (minimum_width)
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*minimum_width = child_min + hdelta;
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if (natural_width)
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*natural_width = child_nat + hdelta;
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}
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else
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GTK_EXTENDED_LAYOUT_GET_IFACE (layout)->get_desired_width (layout, minimum_width, natural_width);
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/* parent_extended_layout_iface->get_height_for_width (layout, height, minimum_width, natural_width); */
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}
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static void
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gtk_bin_get_height_for_width (GtkExtendedLayout *layout,
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gint width,
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gint *minimum_height,
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gint *natural_height)
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{
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GtkBin *bin = GTK_BIN (layout);
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gint hdelta, vdelta, child_min, child_nat;
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if (bin->child)
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{
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get_child_padding_delta (bin, &hdelta, &vdelta);
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gtk_extended_layout_get_height_for_width (GTK_EXTENDED_LAYOUT (bin->child),
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width - hdelta,
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&child_min, &child_nat);
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if (minimum_height)
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*minimum_height = child_min + vdelta;
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if (natural_height)
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*natural_height = child_nat + vdelta;
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}
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else
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GTK_EXTENDED_LAYOUT_GET_IFACE (layout)->get_desired_height (layout, minimum_height, natural_height);
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/* parent_extended_layout_iface->get_height_for_width (layout, width, minimum_height, natural_height); */
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}
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/**
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* gtk_bin_get_child:
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* @bin: a #GtkBin
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*
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* Gets the child of the #GtkBin, or %NULL if the bin contains
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* no child widget. The returned widget does not have a reference
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* added, so you do not need to unref it.
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*
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* Return value: (transfer none): pointer to child of the #GtkBin
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**/
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GtkWidget*
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gtk_bin_get_child (GtkBin *bin)
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{
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g_return_val_if_fail (GTK_IS_BIN (bin), NULL);
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return bin->child;
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}
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#define __GTK_BIN_C__
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#include "gtkaliasdef.c"
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