gtk2/gtk/gtkbin.c

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/* GTK - The GIMP Toolkit
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* 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 Lesser General Public
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* 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
* Lesser General Public License for more details.
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*
* 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.
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*/
/*
* 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
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
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#include "gtkbin.h"
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#include "gtkextendedlayout.h"
#include "gtkintl.h"
#include "gtkalias.h"
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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);
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static void gtk_bin_extended_layout_interface_init (GtkExtendedLayoutIface *iface);
G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GtkBin, gtk_bin, GTK_TYPE_CONTAINER,
G_IMPLEMENT_INTERFACE (GTK_TYPE_EXTENDED_LAYOUT,
gtk_bin_extended_layout_interface_init))
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static void
gtk_bin_class_init (GtkBinClass *class)
{
GtkContainerClass *container_class;
container_class = (GtkContainerClass*) class;
container_class->add = gtk_bin_add;
container_class->remove = gtk_bin_remove;
GTK_MENU_DIR_CHILD: check for the existance of Thu Sep 3 04:22:20 1998 Tim Janik <timj@gtk.org> * gtk/gtkmenushell.c (gtk_real_menu_shell_move_current): GTK_MENU_DIR_CHILD: check for the existance of menu_shell->active_menu_item before accessing its child. GTK_MENU_DIR_PREV: GTK_MENU_DIR_NEXT: if we haven't had an active item and still don't, make a default selection. Wed Sep 2 00:28:58 1998 Tim Janik <timj@gtk.org> * gtk/gtkwidget.c (gtk_widget_propagate_state): iterate the children with _forall for sensitivity changes and with _foreach on pure state changes. this fixes a lot of the old inclusions of internal widgets into _foreach calls. * gtk/gtktree.c: removed gtk_tree_foreach, let gtk_tree_forall do the work. don't walk the subtrees of first level children. * gtk/gtktreeitem.c: provide a _forall implementation, which walks the subtrees as well for include_internals. * gtk/gtkmenuitem.c: provide a _forall implementation, which walks the submenus as well for include_internals. * gtk/gtkscrolledwindow.c: removed gtk_scrolled_window_foreach and implemented gtk_scrolled_window_forall, which will iterate over the viewport and the scrollbars for gtk_container_forall or iterate over the viewports children for gtk_container_foreach. * gtk/gtktoolbar.c: * gtk/gtktable.c: * gtk/gtkpaned.c: * gtk/gtkpacker.c: * gtk/gtkmenushell.c: * gtk/gtklist.c: * gtk/gtkfixed.c: * gtk/gtkclist.c: * gtk/gtkbox.c: * gtk/gtkbin.c: * gtk/gtknotebook.c: removed the old gtk_*_foreach functions and provided gtk_*_forall. * gtk/gtknotebook.c: (gtk_notebook_real_switch_page): expose tabs. (gtk_notebook_page_num): new function to return the page number of a distinct child. (gtk_notebook_focus): minor fixups. foxus handling is still screwed under some circumstances. * gtk/gtktreeitem.c: (gtk_real_tree_item_select): (gtk_real_tree_item_deselect): major fixes. some general fixups wrt queue_redraw, and tree items not being NO_WINDOW widgets. * gtk/gtklistitem.c: (gtk_real_list_item_select): (gtk_real_list_item_deselect): (gtk_real_list_item_toggle): removed unneccessary queue_redraw calls. Wed Aug 30 09:42:07 1998 Tim Janik <timj@gtk.org> * gtk/gtkoptionmenu.c: allow optionmenus to have the focus and automatically popup the menu on space bar. Wed Aug 26 06:40:34 1998 Tim Janik <timj@gtk.org> * gtk/gtkcontainer.h: * gtk/gtkcontainer.c: implemented gtk_container_forall() (as a class method), which acts similar to gtk_container_foreach(), but iterates over internal children. the GtkContainer::foreach signal vanished in favour of a new class method ->forall() that optionally includes internal widgets. * gtk/gtkclist.c (gtk_clist_init): provide no _foreach implementation but a _forall implementation, since all child widgets we have are internal ones. (column_button_create): set the parent window prior to gtk_widget_set_parent(). * gtk/gtkwidget.c: exchanged all calls to gtk_container_foreach() with gtk_container_forall(). * gtk/gtkwidget.h: * gtk/gtkwidget.c: added the GTK_COMPOSITE_CHILD, exported through the GtkWidget::composite_child argument. to have a widget created with the flag initially, two new functions got added to wrap a widgets creation: gtk_widget_push_composite_flag() and gtk_widget_pop_composite_flag(). Wed Aug 25 23:37:39 1998 Tim Janik <timj@gtk.org> * gtk/gtktooltips.h: * gtk/gtktooltips.c: exported gtk_tooltips_create_window() as gtk_tooltips_force_window(), so tooltips->tip_window can be accessed prior to the first tip being set. don't put an extra reference on the window, since it is a toplevel, it wont get destroyed from anywhere else. * overall macro and GtkType fixups.
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container_class->forall = gtk_bin_forall;
container_class->child_type = gtk_bin_child_type;
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}
static void
gtk_bin_init (GtkBin *bin)
{
GTK_WIDGET_SET_FLAGS (bin, GTK_NO_WINDOW);
bin->child = NULL;
}
static GType
gtk_bin_child_type (GtkContainer *container)
{
if (!GTK_BIN (container)->child)
return GTK_TYPE_WIDGET;
else
return G_TYPE_NONE;
}
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static void
gtk_bin_add (GtkContainer *container,
GtkWidget *child)
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{
GtkBin *bin = GTK_BIN (container);
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if (bin->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; "
"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;
}
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gtk_widget_set_parent (child, GTK_WIDGET (bin));
bin->child = child;
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}
static void
gtk_bin_remove (GtkContainer *container,
GtkWidget *child)
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{
GtkBin *bin = GTK_BIN (container);
gboolean widget_was_visible;
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g_return_if_fail (bin->child == child);
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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));
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}
static void
GTK_MENU_DIR_CHILD: check for the existance of Thu Sep 3 04:22:20 1998 Tim Janik <timj@gtk.org> * gtk/gtkmenushell.c (gtk_real_menu_shell_move_current): GTK_MENU_DIR_CHILD: check for the existance of menu_shell->active_menu_item before accessing its child. GTK_MENU_DIR_PREV: GTK_MENU_DIR_NEXT: if we haven't had an active item and still don't, make a default selection. Wed Sep 2 00:28:58 1998 Tim Janik <timj@gtk.org> * gtk/gtkwidget.c (gtk_widget_propagate_state): iterate the children with _forall for sensitivity changes and with _foreach on pure state changes. this fixes a lot of the old inclusions of internal widgets into _foreach calls. * gtk/gtktree.c: removed gtk_tree_foreach, let gtk_tree_forall do the work. don't walk the subtrees of first level children. * gtk/gtktreeitem.c: provide a _forall implementation, which walks the subtrees as well for include_internals. * gtk/gtkmenuitem.c: provide a _forall implementation, which walks the submenus as well for include_internals. * gtk/gtkscrolledwindow.c: removed gtk_scrolled_window_foreach and implemented gtk_scrolled_window_forall, which will iterate over the viewport and the scrollbars for gtk_container_forall or iterate over the viewports children for gtk_container_foreach. * gtk/gtktoolbar.c: * gtk/gtktable.c: * gtk/gtkpaned.c: * gtk/gtkpacker.c: * gtk/gtkmenushell.c: * gtk/gtklist.c: * gtk/gtkfixed.c: * gtk/gtkclist.c: * gtk/gtkbox.c: * gtk/gtkbin.c: * gtk/gtknotebook.c: removed the old gtk_*_foreach functions and provided gtk_*_forall. * gtk/gtknotebook.c: (gtk_notebook_real_switch_page): expose tabs. (gtk_notebook_page_num): new function to return the page number of a distinct child. (gtk_notebook_focus): minor fixups. foxus handling is still screwed under some circumstances. * gtk/gtktreeitem.c: (gtk_real_tree_item_select): (gtk_real_tree_item_deselect): major fixes. some general fixups wrt queue_redraw, and tree items not being NO_WINDOW widgets. * gtk/gtklistitem.c: (gtk_real_list_item_select): (gtk_real_list_item_deselect): (gtk_real_list_item_toggle): removed unneccessary queue_redraw calls. Wed Aug 30 09:42:07 1998 Tim Janik <timj@gtk.org> * gtk/gtkoptionmenu.c: allow optionmenus to have the focus and automatically popup the menu on space bar. Wed Aug 26 06:40:34 1998 Tim Janik <timj@gtk.org> * gtk/gtkcontainer.h: * gtk/gtkcontainer.c: implemented gtk_container_forall() (as a class method), which acts similar to gtk_container_foreach(), but iterates over internal children. the GtkContainer::foreach signal vanished in favour of a new class method ->forall() that optionally includes internal widgets. * gtk/gtkclist.c (gtk_clist_init): provide no _foreach implementation but a _forall implementation, since all child widgets we have are internal ones. (column_button_create): set the parent window prior to gtk_widget_set_parent(). * gtk/gtkwidget.c: exchanged all calls to gtk_container_foreach() with gtk_container_forall(). * gtk/gtkwidget.h: * gtk/gtkwidget.c: added the GTK_COMPOSITE_CHILD, exported through the GtkWidget::composite_child argument. to have a widget created with the flag initially, two new functions got added to wrap a widgets creation: gtk_widget_push_composite_flag() and gtk_widget_pop_composite_flag(). Wed Aug 25 23:37:39 1998 Tim Janik <timj@gtk.org> * gtk/gtktooltips.h: * gtk/gtktooltips.c: exported gtk_tooltips_create_window() as gtk_tooltips_force_window(), so tooltips->tip_window can be accessed prior to the first tip being set. don't put an extra reference on the window, since it is a toplevel, it wont get destroyed from anywhere else. * overall macro and GtkType fixups.
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gtk_bin_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
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{
GtkBin *bin = GTK_BIN (container);
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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: (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;
}
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static void
gtk_bin_extended_layout_get_desired_size (GtkExtendedLayout *layout,
GtkRequisition *minimum_size,
GtkRequisition *natural_size)
{
GtkBin *bin = GTK_BIN (layout);
g_return_if_fail (GTK_IS_EXTENDED_LAYOUT (bin->child));
gtk_extended_layout_get_desired_size (GTK_EXTENDED_LAYOUT (bin->child),
minimum_size, natural_size);
}
static void
gtk_bin_extended_layout_get_width_for_height (GtkExtendedLayout *layout,
gint height,
gint *minimum_width,
gint *natural_width)
{
GtkBin *bin = GTK_BIN (layout);
g_return_if_fail (GTK_IS_EXTENDED_LAYOUT (bin->child));
gtk_extended_layout_get_width_for_height (GTK_EXTENDED_LAYOUT (bin->child),
height, minimum_width, natural_width);
}
static void
gtk_bin_extended_layout_get_height_for_width (GtkExtendedLayout *layout,
gint width,
gint *minimum_height,
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gint *natural_height)
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{
GtkBin *bin = GTK_BIN (layout);
g_return_if_fail (GTK_IS_EXTENDED_LAYOUT (bin->child));
gtk_extended_layout_get_height_for_width (GTK_EXTENDED_LAYOUT (bin->child),
width, minimum_height, natural_height);
}
static void
gtk_bin_extended_layout_interface_init (GtkExtendedLayoutIface *iface)
{
iface->get_desired_size = gtk_bin_extended_layout_get_desired_size;
iface->get_height_for_width = gtk_bin_extended_layout_get_height_for_width;
iface->get_width_for_height = gtk_bin_extended_layout_get_width_for_height;
}
#define __GTK_BIN_C__
#include "gtkaliasdef.c"