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50512ddcd2
Fri May 18 14:25:20 2001 Owen Taylor <otaylor@redhat.com> * gtk/gtkcontainer.c: Remove reallocate-redraws property. This is something that only a widget writer would ever want to change. * gtk/gtksignal.c: Handle G_SIGNAL_TYPE_STATIC_SCOPE for gtk_signal_emit_by_name(). * gtk/gtkviewport.c: Fix some warnings. * gtk/gtkwidget.c gtk/gtksizegroup.c: Add "size group" facility allowing the requisitions of multiple widgets to be grouped together. * tests/testgtk.c: Add GtkSizeGroup test * demos/gtk-demo/sizegroup.c: Add GtkSizeGroup demo. * demos/gtk-demo/main.c demos/gtk-demo/pixbufs.c: Fix some warnings. * configure.in: Switch to using AM_GLIB_GNU_GETTEXT.
680 lines
16 KiB
C
680 lines
16 KiB
C
/* GTK - The GIMP Toolkit
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* gtksizegroup.c:
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* Copyright (C) 2001 Red Hat Software
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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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#include "gtkcontainer.h"
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#include "gtkintl.h"
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#include "gtksignal.h"
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#include "gtksizegroup.h"
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enum {
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PROP_0,
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PROP_MODE
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};
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static void gtk_size_group_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_size_group_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void add_group_to_closure (GtkSizeGroup *group,
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GtkSizeGroupMode mode,
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GSList **groups,
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GSList **widgets);
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static void add_widget_to_closure (GtkWidget *widget,
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GtkSizeGroupMode mode,
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GSList **groups,
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GSList **widgets);
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static GQuark size_groups_quark;
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static const gchar *size_groups_tag = "gtk-size-groups";
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static GSList *
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get_size_groups (GtkWidget *widget)
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{
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if (!size_groups_quark)
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size_groups_quark = g_quark_from_string (size_groups_tag);
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return g_object_get_qdata (G_OBJECT (widget), size_groups_quark);
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}
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static void
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set_size_groups (GtkWidget *widget,
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GSList *groups)
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{
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if (!size_groups_quark)
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size_groups_quark = g_quark_from_string (size_groups_tag);
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g_object_set_qdata (G_OBJECT (widget), size_groups_quark, groups);
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}
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static void
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add_group_to_closure (GtkSizeGroup *group,
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GtkSizeGroupMode mode,
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GSList **groups,
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GSList **widgets)
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{
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GSList *tmp_widgets;
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*groups = g_slist_prepend (*groups, group);
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tmp_widgets = group->widgets;
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while (tmp_widgets)
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{
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GtkWidget *tmp_widget = tmp_widgets->data;
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if (!g_slist_find (*widgets, tmp_widget))
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add_widget_to_closure (tmp_widget, mode, groups, widgets);
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tmp_widgets = tmp_widgets->next;
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}
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}
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static void
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add_widget_to_closure (GtkWidget *widget,
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GtkSizeGroupMode mode,
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GSList **groups,
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GSList **widgets)
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{
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GSList *tmp_groups;
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*widgets = g_slist_prepend (*widgets, widget);
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tmp_groups = get_size_groups (widget);
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while (tmp_groups)
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{
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GtkSizeGroup *tmp_group = tmp_groups->data;
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if ((tmp_group->mode == GTK_SIZE_GROUP_BOTH || tmp_group->mode == mode) &&
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!g_slist_find (*groups, tmp_group))
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add_group_to_closure (tmp_group, mode, groups, widgets);
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tmp_groups = tmp_groups->next;
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}
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}
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static void
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real_queue_resize (GtkWidget *widget)
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{
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if (GTK_IS_RESIZE_CONTAINER (widget))
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gtk_container_clear_resize_widgets (GTK_CONTAINER (widget));
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if (widget->parent)
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gtk_container_queue_resize (GTK_CONTAINER (widget->parent));
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else if (GTK_WIDGET_TOPLEVEL (widget) && GTK_IS_CONTAINER (widget))
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gtk_container_queue_resize (GTK_CONTAINER (widget));
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}
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static void
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reset_group_sizes (GSList *groups)
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{
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GSList *tmp_list = groups;
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while (tmp_list)
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{
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GtkSizeGroup *tmp_group = tmp_list->data;
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tmp_group->have_width = FALSE;
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tmp_group->have_height = FALSE;
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tmp_list = tmp_list->next;
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}
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}
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static void
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queue_resize_on_widget (GtkWidget *widget,
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gboolean check_siblings)
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{
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GtkWidget *parent = widget;
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GSList *tmp_list;
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while (parent)
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{
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GSList *widget_groups;
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GSList *groups;
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GSList *widgets;
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if (widget == parent && !check_siblings)
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{
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real_queue_resize (widget);
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parent = parent->parent;
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continue;
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}
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widget_groups = get_size_groups (parent);
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if (!widget_groups)
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{
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if (widget == parent)
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real_queue_resize (widget);
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parent = parent->parent;
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continue;
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}
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groups = NULL;
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widgets = NULL;
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add_widget_to_closure (parent, GTK_SIZE_GROUP_HORIZONTAL, &groups, &widgets);
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reset_group_sizes (groups);
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tmp_list = widgets;
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while (tmp_list)
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{
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if (tmp_list->data == parent)
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{
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if (widget == parent)
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real_queue_resize (parent);
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}
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else
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queue_resize_on_widget (tmp_list->data, FALSE);
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tmp_list = tmp_list->next;
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}
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g_slist_free (widgets);
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g_slist_free (groups);
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groups = NULL;
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widgets = NULL;
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add_widget_to_closure (parent, GTK_SIZE_GROUP_VERTICAL, &groups, &widgets);
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reset_group_sizes (groups);
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tmp_list = widgets;
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while (tmp_list)
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{
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if (tmp_list->data == parent)
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{
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if (widget == parent)
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real_queue_resize (parent);
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}
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else
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queue_resize_on_widget (tmp_list->data, FALSE);
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tmp_list = tmp_list->next;
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}
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g_slist_free (widgets);
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g_slist_free (groups);
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parent = parent->parent;
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}
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}
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static void
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queue_resize_on_group (GtkSizeGroup *size_group)
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{
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if (size_group->widgets)
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queue_resize_on_widget (size_group->widgets->data, TRUE);
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}
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static void
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gtk_size_group_class_init (GtkSizeGroupClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->set_property = gtk_size_group_set_property;
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gobject_class->get_property = gtk_size_group_get_property;
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g_object_class_install_property (gobject_class,
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PROP_MODE,
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g_param_spec_enum ("mode",
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_("Mode"),
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_("The the directions in which the size group effects the requested sizes"
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" of its component widgets."),
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GTK_TYPE_SIZE_GROUP_MODE,
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GTK_SIZE_GROUP_HORIZONTAL,
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G_PARAM_READWRITE));
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}
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static void
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gtk_size_group_init (GtkSizeGroup *size_group)
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{
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size_group->widgets = NULL;
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size_group->mode = GTK_SIZE_GROUP_HORIZONTAL;
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size_group->have_width = 0;
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size_group->have_height = 0;
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}
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GtkType
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gtk_size_group_get_type (void)
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{
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static GtkType size_group_type = 0;
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if (!size_group_type)
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{
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static const GTypeInfo size_group_info =
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{
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sizeof (GtkSizeGroupClass),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) gtk_size_group_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GtkSizeGroup),
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16, /* n_preallocs */
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(GInstanceInitFunc) gtk_size_group_init,
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};
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size_group_type = g_type_register_static (G_TYPE_OBJECT, "GtkSizeGroup", &size_group_info, 0);
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}
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return size_group_type;
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}
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static void
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gtk_size_group_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkSizeGroup *size_group = GTK_SIZE_GROUP (object);
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switch (prop_id)
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{
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case PROP_MODE:
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gtk_size_group_set_mode (size_group, g_value_get_enum (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_size_group_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkSizeGroup *size_group = GTK_SIZE_GROUP (object);
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switch (prop_id)
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{
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case PROP_MODE:
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g_value_set_enum (value, size_group->mode);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/**
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* gtk_size_group_new:
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* @mode: the mode for the new size group.
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*
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* Create a new #GtkSizeGroup.
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* Return value: a newly created #GtkSizeGroup
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**/
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GtkSizeGroup *
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gtk_size_group_new (GtkSizeGroupMode mode)
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{
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GtkSizeGroup *size_group = g_object_new (GTK_TYPE_SIZE_GROUP, NULL);
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size_group->mode = mode;
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return size_group;
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}
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/**
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* gtk_size_group_set_mode:
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* @size_group: a #GtkSizeGroup
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* @mode: the mode to set for the size group.
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*
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* Sets the #GtkSizeGroupMode of the size group. The mode of the size
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* group determines whether the widgets in the size group should
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* all have the same horizontal requisition (%GTK_SIZE_GROUP_MODE_HORIZONTAL)
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* all have the same vertical requisition (%GTK_SIZE_GROUP_MODE_VERTICAL),
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* or should all have the same requisition in both directions.
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* (%GTK_SIZE_GROUP_MODE_BOTH).
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**/
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void
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gtk_size_group_set_mode (GtkSizeGroup *size_group,
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GtkSizeGroupMode mode)
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{
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g_return_if_fail (GTK_IS_SIZE_GROUP (size_group));
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if (size_group->mode != mode)
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{
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size_group->mode = mode;
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queue_resize_on_group (size_group);
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}
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}
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/**
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* gtk_size_group_get_mode:
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* @size_group: a #GtkSizeGroup
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*
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* Gets the current mode of the size group. See gtk_size_group_set_mode().
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*
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* Return value: the current mode of the size group.
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**/
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GtkSizeGroupMode
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gtk_size_group_get_mode (GtkSizeGroup *size_group)
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{
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g_return_val_if_fail (GTK_IS_SIZE_GROUP (size_group), GTK_SIZE_GROUP_BOTH);
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return size_group->mode;
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}
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static void
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gtk_size_group_widget_destroyed (GtkWidget *widget,
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GtkSizeGroup *size_group)
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{
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gtk_size_group_remove_widget (size_group, widget);
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}
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/**
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* gtk_size_group_add_widget:
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* @size_group: a #GtkSizeGroup
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* @widget: the #GtkWidget to add
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*
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* Adds a widget to a #GtkSizeGroup. In the future, the requisition
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* of the widget will be determined as the maximum of its requisition
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* and the requisition of the other widgets in the size group.
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* Whether this applies horizontally, vertically, or in both directions
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* depends on the mode of the size group. See gtk_size_group_set_mode().
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**/
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void
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gtk_size_group_add_widget (GtkSizeGroup *size_group,
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GtkWidget *widget)
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{
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GSList *groups;
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g_return_if_fail (GTK_IS_SIZE_GROUP (size_group));
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g_return_if_fail (GTK_IS_WIDGET (widget));
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groups = get_size_groups (widget);
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if (!g_slist_find (groups, widget))
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{
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groups = g_slist_prepend (groups, size_group);
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set_size_groups (widget, groups);
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size_group->widgets = g_slist_prepend (size_group->widgets, widget);
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gtk_signal_connect (GTK_OBJECT (widget), "destroy",
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GTK_SIGNAL_FUNC (gtk_size_group_widget_destroyed), size_group);
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g_object_ref (G_OBJECT (size_group));
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}
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queue_resize_on_group (size_group);
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}
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/**
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* gtk_size_group_remove_widget:
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* @size_group: a #GtkSizeGrup
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* @widget: the #GtkWidget to remove
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*
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* Removes a widget from a #GtkSizeGroup.
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**/
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void
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gtk_size_group_remove_widget (GtkSizeGroup *size_group,
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GtkWidget *widget)
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{
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GSList *groups;
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g_return_if_fail (GTK_IS_SIZE_GROUP (size_group));
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g_return_if_fail (GTK_IS_WIDGET (widget));
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g_return_if_fail (g_slist_find (size_group->widgets, widget));
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gtk_signal_disconnect_by_func (GTK_OBJECT (widget),
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GTK_SIGNAL_FUNC (gtk_size_group_widget_destroyed), size_group);
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groups = get_size_groups (widget);
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groups = g_slist_remove (groups, size_group);
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set_size_groups (widget, groups);
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size_group->widgets = g_slist_remove (size_group->widgets, widget);
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queue_resize_on_group (size_group);
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gtk_widget_queue_resize (widget);
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g_object_unref (G_OBJECT (size_group));
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}
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static gint
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get_base_dimension (GtkWidget *widget,
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GtkSizeGroupMode mode)
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{
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GtkWidgetAuxInfo *aux_info = _gtk_widget_get_aux_info (widget, FALSE);
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if (mode == GTK_SIZE_GROUP_HORIZONTAL)
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{
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if (aux_info && aux_info->width > 0)
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return aux_info->width;
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else
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return widget->requisition.width;
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}
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else
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{
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if (aux_info && aux_info->height > 0)
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return aux_info->height;
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else
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return widget->requisition.height;
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}
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}
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static gint
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compute_base_dimension (GtkWidget *widget,
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GtkSizeGroupMode mode)
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{
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gtk_widget_ensure_style (widget);
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gtk_signal_emit_by_name (GTK_OBJECT (widget), "size_request", &widget->requisition);
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return get_base_dimension (widget, mode);
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}
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static gint
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compute_dimension (GtkWidget *widget,
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GtkSizeGroupMode mode)
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{
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GSList *widgets = NULL;
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GSList *groups = NULL;
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GSList *tmp_list;
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gint result = 0;
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add_widget_to_closure (widget, mode, &groups, &widgets);
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g_slist_foreach (widgets, (GFunc)g_object_ref, NULL);
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if (!groups)
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{
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result = compute_base_dimension (widget, mode);
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}
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else
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{
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GtkSizeGroup *group = groups->data;
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if (mode == GTK_SIZE_GROUP_HORIZONTAL && group->have_width)
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result = group->requisition.width;
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else if (mode == GTK_SIZE_GROUP_VERTICAL && group->have_height)
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result = group->requisition.height;
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else
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{
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tmp_list = widgets;
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while (tmp_list)
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{
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GtkWidget *tmp_widget = tmp_list->data;
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gint dimension = compute_base_dimension (tmp_widget, mode);
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if (dimension > result)
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result = dimension;
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tmp_list = tmp_list->next;
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}
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tmp_list = groups;
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while (tmp_list)
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{
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GtkSizeGroup *tmp_group = tmp_list->data;
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if (mode == GTK_SIZE_GROUP_HORIZONTAL)
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{
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tmp_group->have_width = TRUE;
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tmp_group->requisition.width = result;
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}
|
|
else
|
|
{
|
|
tmp_group->have_height = TRUE;
|
|
tmp_group->requisition.height = result;
|
|
}
|
|
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
}
|
|
}
|
|
|
|
g_slist_foreach (widgets, (GFunc)g_object_unref, NULL);
|
|
|
|
g_slist_free (widgets);
|
|
g_slist_free (groups);
|
|
|
|
return result;
|
|
}
|
|
|
|
static gint
|
|
get_dimension (GtkWidget *widget,
|
|
GtkSizeGroupMode mode)
|
|
{
|
|
GSList *widgets = NULL;
|
|
GSList *groups = NULL;
|
|
gint result = 0;
|
|
|
|
add_widget_to_closure (widget, mode, &groups, &widgets);
|
|
|
|
if (!groups)
|
|
{
|
|
result = get_base_dimension (widget, mode);
|
|
}
|
|
else
|
|
{
|
|
GtkSizeGroup *group = groups->data;
|
|
|
|
if (mode == GTK_SIZE_GROUP_HORIZONTAL && group->have_width)
|
|
result = group->requisition.width;
|
|
else if (mode == GTK_SIZE_GROUP_VERTICAL && group->have_height)
|
|
result = group->requisition.height;
|
|
}
|
|
|
|
g_slist_free (widgets);
|
|
g_slist_free (groups);
|
|
|
|
return result;
|
|
}
|
|
|
|
static void
|
|
get_fast_child_requisition (GtkWidget *widget,
|
|
GtkRequisition *requisition)
|
|
{
|
|
GtkWidgetAuxInfo *aux_info = _gtk_widget_get_aux_info (widget, FALSE);
|
|
|
|
*requisition = widget->requisition;
|
|
|
|
if (aux_info)
|
|
{
|
|
if (aux_info->width > 0)
|
|
requisition->width = aux_info->width;
|
|
if (aux_info && aux_info->height > 0)
|
|
requisition->height = aux_info->height;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* _gtk_size_group_get_child_requisition:
|
|
* @widget: a #GtkWidget
|
|
* @requisition: location to store computed requisition.
|
|
*
|
|
* Retrieve the "child requisition" of the widget, taking account grouping
|
|
* of the widget's requisition with other widgets.
|
|
**/
|
|
void
|
|
_gtk_size_group_get_child_requisition (GtkWidget *widget,
|
|
GtkRequisition *requisition)
|
|
{
|
|
if (requisition)
|
|
{
|
|
if (get_size_groups (widget))
|
|
{
|
|
requisition->width = get_dimension (widget, GTK_SIZE_GROUP_HORIZONTAL);
|
|
requisition->height = get_dimension (widget, GTK_SIZE_GROUP_VERTICAL);
|
|
|
|
/* Only do the full computation if we actually have size groups */
|
|
}
|
|
else
|
|
get_fast_child_requisition (widget, requisition);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* _gtk_size_group_compute_requisition:
|
|
* @widget: a #GtkWidget
|
|
* @requisition: location to store computed requisition.
|
|
*
|
|
* Compute the requisition of a widget taking into account grouping of
|
|
* the widget's requisition with other widgets.
|
|
**/
|
|
void
|
|
_gtk_size_group_compute_requisition (GtkWidget *widget,
|
|
GtkRequisition *requisition)
|
|
{
|
|
gint width;
|
|
gint height;
|
|
|
|
if (get_size_groups (widget))
|
|
{
|
|
/* Only do the full computation if we actually have size groups */
|
|
|
|
width = compute_dimension (widget, GTK_SIZE_GROUP_HORIZONTAL);
|
|
height = compute_dimension (widget, GTK_SIZE_GROUP_VERTICAL);
|
|
|
|
if (requisition)
|
|
{
|
|
requisition->width = width;
|
|
requisition->height = height;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
gtk_widget_ensure_style (widget);
|
|
gtk_signal_emit_by_name (GTK_OBJECT (widget), "size_request", &widget->requisition);
|
|
|
|
if (requisition)
|
|
get_fast_child_requisition (widget, requisition);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* _gtk_size_group_queue_resize:
|
|
* @widget: a #GtkWidget
|
|
*
|
|
* Queue a resize on a widget, and on all other widgets grouped with this widget.
|
|
**/
|
|
void
|
|
_gtk_size_group_queue_resize (GtkWidget *widget)
|
|
{
|
|
queue_resize_on_widget (widget, TRUE);
|
|
}
|