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gtk2/gtk/gtkcontainer.c
Shawn Amundson dc4e9e2fe1 corrects a small resize bug in the viewport widget. The viewport widget 
* gtk/gtkviewport.c: corrects a small resize bug in the
          viewport widget.  The viewport widget provides a _set_shadow
          function to draw its shadows. But if GTK_SHADOW_NONE is sent
          to this function, the viewport isn't resized correctly (it's
          still considered as a shadowed widget).  (gtk-fortier-971213-0)

        * gtk/gtknotebook.c: this patch fixes the redraw problems of
          notebook tabs, without using gdk_gc_set_clip_rectangle.
          (gtk-hamann_jeske-971218-0)

        * add gtk_widget_(show/hide)_all (Stefan Wille)
          (gtk-wille-301297-0)  Patch for testgtk not included
          because it did not patch clean.

-Shawn
1998-01-02 20:22:38 +00:00

891 lines
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/* 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
* modify it under the terms of the GNU Library General Public
* 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <string.h>
#include "gtkcontainer.h"
#include "gtksignal.h"
enum {
ADD,
REMOVE,
NEED_RESIZE,
FOREACH,
FOCUS,
LAST_SIGNAL
};
typedef void (*GtkContainerSignal1) (GtkObject *object,
gpointer arg1,
gpointer data);
typedef void (*GtkContainerSignal2) (GtkObject *object,
gpointer arg1,
gpointer arg2,
gpointer data);
typedef gint (*GtkContainerSignal3) (GtkObject *object,
gint arg1,
gpointer data);
typedef gint (*GtkContainerSignal4) (GtkObject *object,
gpointer data);
static void gtk_container_marshal_signal_1 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args);
static void gtk_container_marshal_signal_2 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args);
static void gtk_container_marshal_signal_3 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args);
static void gtk_container_marshal_signal_4 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args);
static void gtk_container_class_init (GtkContainerClass *klass);
static void gtk_container_init (GtkContainer *container);
static void gtk_container_arg (GtkContainer *container,
GtkArg *arg);
static gint gtk_real_container_need_resize (GtkContainer *container);
static gint gtk_real_container_focus (GtkContainer *container,
GtkDirectionType direction);
static gint gtk_container_focus_tab (GtkContainer *container,
GList *children,
GtkDirectionType direction);
static gint gtk_container_focus_up_down (GtkContainer *container,
GList *children,
GtkDirectionType direction);
static gint gtk_container_focus_left_right (GtkContainer *container,
GList *children,
GtkDirectionType direction);
static gint gtk_container_focus_move (GtkContainer *container,
GList *children,
GtkDirectionType direction);
static void gtk_container_children_callback (GtkWidget *widget,
gpointer client_data);
static void gtk_container_show_all (GtkWidget *widget);
static void gtk_container_hide_all (GtkWidget *widget);
static gint container_signals[LAST_SIGNAL] = { 0 };
guint
gtk_container_get_type ()
{
static guint container_type = 0;
if (!container_type)
{
GtkTypeInfo container_info =
{
"GtkContainer",
sizeof (GtkContainer),
sizeof (GtkContainerClass),
(GtkClassInitFunc) gtk_container_class_init,
(GtkObjectInitFunc) gtk_container_init,
(GtkArgFunc) gtk_container_arg,
};
container_type = gtk_type_unique (gtk_widget_get_type (), &container_info);
}
return container_type;
}
static void
gtk_container_class_init (GtkContainerClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
gtk_object_add_arg_type ("GtkContainer::border_width", GTK_TYPE_LONG);
gtk_object_add_arg_type ("GtkContainer::auto_resize", GTK_TYPE_BOOL);
gtk_object_add_arg_type ("GtkContainer::block_resize", GTK_TYPE_BOOL);
gtk_object_add_arg_type ("GtkContainer::child", GTK_TYPE_WIDGET);
container_signals[ADD] =
gtk_signal_new ("add",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, add),
gtk_container_marshal_signal_1,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
container_signals[REMOVE] =
gtk_signal_new ("remove",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, remove),
gtk_container_marshal_signal_1,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
container_signals[NEED_RESIZE] =
gtk_signal_new ("need_resize",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, need_resize),
gtk_container_marshal_signal_4,
GTK_TYPE_BOOL, 0,
GTK_TYPE_WIDGET);
container_signals[FOREACH] =
gtk_signal_new ("foreach",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, foreach),
gtk_container_marshal_signal_2,
GTK_TYPE_NONE, 1,
GTK_TYPE_C_CALLBACK);
container_signals[FOCUS] =
gtk_signal_new ("focus",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, focus),
gtk_container_marshal_signal_3,
GTK_TYPE_DIRECTION_TYPE, 1,
GTK_TYPE_DIRECTION_TYPE);
gtk_object_class_add_signals (object_class, container_signals, LAST_SIGNAL);
/* Other container classes should overwrite show_all and hide_all,
unless they make all their children accessable
through gtk_container_foreach.
*/
widget_class->show_all = gtk_container_show_all;
widget_class->hide_all = gtk_container_hide_all;
class->need_resize = gtk_real_container_need_resize;
class->focus = gtk_real_container_focus;
}
static void
gtk_container_init (GtkContainer *container)
{
container->focus_child = NULL;
container->border_width = 0;
container->auto_resize = TRUE;
container->need_resize = FALSE;
container->block_resize = FALSE;
}
static void
gtk_container_arg (GtkContainer *container,
GtkArg *arg)
{
if (strcmp (arg->name, "border_width") == 0)
{
gtk_container_border_width (container, GTK_VALUE_LONG (*arg));
}
else if (strcmp (arg->name, "auto_resize") == 0)
{
if (GTK_VALUE_BOOL (*arg))
gtk_container_enable_resize (container);
else
gtk_container_disable_resize (container);
}
else if (strcmp (arg->name, "block_resize") == 0)
{
if (GTK_VALUE_BOOL (*arg))
gtk_container_block_resize (container);
else
gtk_container_unblock_resize (container);
}
else if (strcmp (arg->name, "child") == 0)
{
gtk_container_add (container, GTK_WIDGET (GTK_VALUE_OBJECT (*arg)));
}
}
void
gtk_container_border_width (GtkContainer *container,
gint border_width)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
if (container->border_width != border_width)
{
container->border_width = border_width;
if (container->widget.parent && GTK_WIDGET_VISIBLE (container))
gtk_container_need_resize (GTK_CONTAINER (container->widget.parent));
}
}
void
gtk_container_add (GtkContainer *container,
GtkWidget *widget)
{
gtk_signal_emit (GTK_OBJECT (container), container_signals[ADD], widget);
}
void
gtk_container_remove (GtkContainer *container,
GtkWidget *widget)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
if (container->focus_child == widget)
container->focus_child = NULL;
gtk_signal_emit (GTK_OBJECT (container), container_signals[REMOVE], widget);
}
void
gtk_container_disable_resize (GtkContainer *container)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
container->auto_resize = FALSE;
}
void
gtk_container_enable_resize (GtkContainer *container)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
container->auto_resize = TRUE;
if (container->need_resize)
{
container->need_resize = FALSE;
gtk_widget_queue_resize (GTK_WIDGET (container));
}
}
void
gtk_container_block_resize (GtkContainer *container)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
container->block_resize = TRUE;
}
void
gtk_container_unblock_resize (GtkContainer *container)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
container->block_resize = FALSE;
}
gint
gtk_container_need_resize (GtkContainer *container)
{
gint return_val;
g_return_val_if_fail (container != NULL, FALSE);
g_return_val_if_fail (GTK_IS_CONTAINER (container), FALSE);
return_val = FALSE;
if (!container->block_resize)
{
if (container->auto_resize)
gtk_signal_emit (GTK_OBJECT (container),
container_signals[NEED_RESIZE],
&return_val);
else
container->need_resize = TRUE;
}
return return_val;
}
void
gtk_container_foreach (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
gtk_signal_emit (GTK_OBJECT (container),
container_signals[FOREACH],
callback, callback_data);
}
gint
gtk_container_focus (GtkContainer *container,
GtkDirectionType direction)
{
gint return_val;
gtk_signal_emit (GTK_OBJECT (container),
container_signals[FOCUS],
direction, &return_val);
return return_val;
}
GList*
gtk_container_children (GtkContainer *container)
{
GList *children;
children = NULL;
gtk_container_foreach (container,
gtk_container_children_callback,
&children);
return g_list_reverse (children);
}
static void
gtk_container_marshal_signal_1 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
GtkContainerSignal1 rfunc;
rfunc = (GtkContainerSignal1) func;
(* rfunc) (object, GTK_VALUE_OBJECT (args[0]), func_data);
}
static void
gtk_container_marshal_signal_2 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
GtkContainerSignal2 rfunc;
rfunc = (GtkContainerSignal2) func;
(* rfunc) (object,
GTK_VALUE_C_CALLBACK(args[0]).func,
GTK_VALUE_C_CALLBACK(args[0]).func_data,
func_data);
}
static void
gtk_container_marshal_signal_3 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
GtkContainerSignal3 rfunc;
gint *return_val;
rfunc = (GtkContainerSignal3) func;
return_val = GTK_RETLOC_ENUM (args[1]);
*return_val = (* rfunc) (object, GTK_VALUE_ENUM(args[0]), func_data);
}
static void
gtk_container_marshal_signal_4 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
GtkContainerSignal4 rfunc;
gint *return_val;
rfunc = (GtkContainerSignal4) func;
return_val = GTK_RETLOC_BOOL (args[0]);
*return_val = (* rfunc) (object, func_data);
}
static gint
gtk_real_container_need_resize (GtkContainer *container)
{
g_return_val_if_fail (container != NULL, FALSE);
g_return_val_if_fail (GTK_IS_CONTAINER (container), FALSE);
if (GTK_WIDGET_VISIBLE (container) && container->widget.parent)
return gtk_container_need_resize (GTK_CONTAINER (container->widget.parent));
return FALSE;
}
static gint
gtk_real_container_focus (GtkContainer *container,
GtkDirectionType direction)
{
GList *children;
GList *tmp_list;
GList *tmp_list2;
gint return_val;
g_return_val_if_fail (container != NULL, FALSE);
g_return_val_if_fail (GTK_IS_CONTAINER (container), FALSE);
/* Fail if the container is insensitive
*/
if (!GTK_WIDGET_SENSITIVE (container))
return FALSE;
return_val = FALSE;
if (GTK_WIDGET_CAN_FOCUS (container))
{
gtk_widget_grab_focus (GTK_WIDGET (container));
return_val = TRUE;
}
else
{
/* Get a list of the containers children
*/
children = gtk_container_children (container);
if (children)
{
/* Remove any children which are insensitive
*/
tmp_list = children;
while (tmp_list)
{
if (!GTK_WIDGET_SENSITIVE (tmp_list->data))
{
tmp_list2 = tmp_list;
tmp_list = tmp_list->next;
children = g_list_remove_link (children, tmp_list2);
g_list_free_1 (tmp_list2);
}
else
tmp_list = tmp_list->next;
}
switch (direction)
{
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_TAB_BACKWARD:
return_val = gtk_container_focus_tab (container, children, direction);
break;
case GTK_DIR_UP:
case GTK_DIR_DOWN:
return_val = gtk_container_focus_up_down (container, children, direction);
break;
case GTK_DIR_LEFT:
case GTK_DIR_RIGHT:
return_val = gtk_container_focus_left_right (container, children, direction);
break;
}
g_list_free (children);
}
}
return return_val;
}
static gint
gtk_container_focus_tab (GtkContainer *container,
GList *children,
GtkDirectionType direction)
{
GtkWidget *child;
GtkWidget *child2;
GList *tmp_list;
gint length;
gint i, j;
length = g_list_length (children);
/* sort the children in the y direction */
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
while (j > 0)
{
child2 = tmp_list->prev->data;
if (child->allocation.y < child2->allocation.y)
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* sort the children in the x direction while
* maintaining the y direction sort.
*/
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
while (j > 0)
{
child2 = tmp_list->prev->data;
if ((child->allocation.x < child2->allocation.x) &&
(child->allocation.y >= child2->allocation.y))
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* if we are going backwards then reverse the order
* of the children.
*/
if (direction == GTK_DIR_TAB_BACKWARD)
children = g_list_reverse (children);
return gtk_container_focus_move (container, children, direction);
}
static gint
gtk_container_focus_up_down (GtkContainer *container,
GList *children,
GtkDirectionType direction)
{
GtkWidget *child;
GtkWidget *child2;
GList *tmp_list;
gint dist1, dist2;
gint focus_x;
gint focus_width;
gint length;
gint i, j;
/* return failure if there isn't a focus child */
if (container->focus_child)
{
focus_width = container->focus_child->allocation.width / 2;
focus_x = container->focus_child->allocation.x + focus_width;
}
else
{
focus_width = GTK_WIDGET (container)->allocation.width;
if (GTK_WIDGET_NO_WINDOW (container))
focus_x = GTK_WIDGET (container)->allocation.x;
else
focus_x = 0;
}
length = g_list_length (children);
/* sort the children in the y direction */
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
while (j > 0)
{
child2 = tmp_list->prev->data;
if (child->allocation.y < child2->allocation.y)
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* sort the children in distance in the x direction
* in distance from the current focus child while maintaining the
* sort in the y direction
*/
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
dist1 = (child->allocation.x + child->allocation.width / 2) - focus_x;
while (j > 0)
{
child2 = tmp_list->prev->data;
dist2 = (child2->allocation.x + child2->allocation.width / 2) - focus_x;
if ((dist1 < dist2) &&
(child->allocation.y >= child2->allocation.y))
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* go and invalidate any widget which is too
* far from the focus widget.
*/
if (!container->focus_child &&
(direction == GTK_DIR_UP))
focus_x += focus_width;
tmp_list = children;
while (tmp_list)
{
child = tmp_list->data;
dist1 = (child->allocation.x + child->allocation.width / 2) - focus_x;
if (((direction == GTK_DIR_DOWN) && (dist1 < 0)) ||
((direction == GTK_DIR_UP) && (dist1 > 0)))
tmp_list->data = NULL;
tmp_list = tmp_list->next;
}
if (direction == GTK_DIR_UP)
children = g_list_reverse (children);
return gtk_container_focus_move (container, children, direction);
}
static gint
gtk_container_focus_left_right (GtkContainer *container,
GList *children,
GtkDirectionType direction)
{
GtkWidget *child;
GtkWidget *child2;
GList *tmp_list;
gint dist1, dist2;
gint focus_y;
gint focus_height;
gint length;
gint i, j;
/* return failure if there isn't a focus child */
if (container->focus_child)
{
focus_height = container->focus_child->allocation.height / 2;
focus_y = container->focus_child->allocation.y + focus_height;
}
else
{
focus_height = GTK_WIDGET (container)->allocation.height;
if (GTK_WIDGET_NO_WINDOW (container))
focus_y = GTK_WIDGET (container)->allocation.y;
else
focus_y = 0;
}
length = g_list_length (children);
/* sort the children in the x direction */
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
while (j > 0)
{
child2 = tmp_list->prev->data;
if (child->allocation.x < child2->allocation.x)
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* sort the children in distance in the y direction
* in distance from the current focus child while maintaining the
* sort in the x direction
*/
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
dist1 = (child->allocation.y + child->allocation.height / 2) - focus_y;
while (j > 0)
{
child2 = tmp_list->prev->data;
dist2 = (child2->allocation.y + child2->allocation.height / 2) - focus_y;
if ((dist1 < dist2) &&
(child->allocation.x >= child2->allocation.x))
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* go and invalidate any widget which is too
* far from the focus widget.
*/
if (!container->focus_child &&
(direction == GTK_DIR_LEFT))
focus_y += focus_height;
tmp_list = children;
while (tmp_list)
{
child = tmp_list->data;
dist1 = (child->allocation.y + child->allocation.height / 2) - focus_y;
if (((direction == GTK_DIR_RIGHT) && (dist1 < 0)) ||
((direction == GTK_DIR_LEFT) && (dist1 > 0)))
tmp_list->data = NULL;
tmp_list = tmp_list->next;
}
if (direction == GTK_DIR_LEFT)
children = g_list_reverse (children);
return gtk_container_focus_move (container, children, direction);
}
static gint
gtk_container_focus_move (GtkContainer *container,
GList *children,
GtkDirectionType direction)
{
GtkWidget *focus_child;
GtkWidget *child;
focus_child = container->focus_child;
container->focus_child = NULL;
while (children)
{
child = children->data;
children = children->next;
if (!child)
continue;
if (focus_child)
{
if (focus_child == child)
{
focus_child = NULL;
if (GTK_WIDGET_VISIBLE (child) &&
GTK_IS_CONTAINER (child) &&
!GTK_WIDGET_HAS_FOCUS (child))
if (gtk_container_focus (GTK_CONTAINER (child), direction))
return TRUE;
}
}
else if (GTK_WIDGET_VISIBLE (child))
{
if (GTK_WIDGET_CAN_FOCUS (child))
{
gtk_widget_grab_focus (child);
return TRUE;
}
else if (GTK_IS_CONTAINER (child))
{
if (gtk_container_focus (GTK_CONTAINER (child), direction))
return TRUE;
}
}
}
return FALSE;
}
static void
gtk_container_children_callback (GtkWidget *widget,
gpointer client_data)
{
GList **children;
children = (GList**) client_data;
*children = g_list_prepend (*children, widget);
}
static void
gtk_container_show_all (GtkWidget *widget)
{
GtkContainer *container;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_CONTAINER (widget));
container = GTK_CONTAINER (widget);
/* First show children, then self.
This makes sure that toplevel windows get shown as last widget.
Otherwise the user would see the widgets get
visible one after another.
*/
gtk_container_foreach (container, (GtkCallback) gtk_widget_show_all, NULL);
gtk_widget_show (widget);
}
static void
gtk_container_hide_all (GtkWidget *widget)
{
GtkContainer *container;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_CONTAINER (widget));
container = GTK_CONTAINER (widget);
/* First hide self, then children.
This is the reverse order of gtk_container_show_all.
*/
gtk_widget_hide (widget);
gtk_container_foreach (container, (GtkCallback) gtk_widget_hide_all, NULL);
}
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