gtk2/gtk/gtkscrolledwindow.c
Tim Janik 698c89e5c4 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.
1998-09-03 02:38:53 +00:00

680 lines
22 KiB
C

/* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "gtkscrolledwindow.h"
#include "gtksignal.h"
#define SCROLLBAR_SPACING(w) (GTK_SCROLLED_WINDOW_CLASS (GTK_OBJECT (w)->klass)->scrollbar_spacing)
enum {
ARG_0,
ARG_VIEWPORT,
ARG_HSCROLLBAR_POLICY,
ARG_VSCROLLBAR_POLICY
};
static void gtk_scrolled_window_class_init (GtkScrolledWindowClass *klass);
static void gtk_scrolled_window_init (GtkScrolledWindow *scrolled_window);
static void gtk_scrolled_window_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_scrolled_window_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_scrolled_window_destroy (GtkObject *object);
static void gtk_scrolled_window_finalize (GtkObject *object);
static void gtk_scrolled_window_map (GtkWidget *widget);
static void gtk_scrolled_window_unmap (GtkWidget *widget);
static void gtk_scrolled_window_draw (GtkWidget *widget,
GdkRectangle *area);
static void gtk_scrolled_window_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_scrolled_window_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_scrolled_window_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_scrolled_window_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_scrolled_window_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static void gtk_scrolled_window_viewport_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_scrolled_window_adjustment_changed (GtkAdjustment *adjustment,
gpointer data);
static GtkContainerClass *parent_class = NULL;
GtkType
gtk_scrolled_window_get_type (void)
{
static GtkType scrolled_window_type = 0;
if (!scrolled_window_type)
{
GtkTypeInfo scrolled_window_info =
{
"GtkScrolledWindow",
sizeof (GtkScrolledWindow),
sizeof (GtkScrolledWindowClass),
(GtkClassInitFunc) gtk_scrolled_window_class_init,
(GtkObjectInitFunc) gtk_scrolled_window_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
scrolled_window_type = gtk_type_unique (GTK_TYPE_CONTAINER, &scrolled_window_info);
}
return scrolled_window_type;
}
static void
gtk_scrolled_window_class_init (GtkScrolledWindowClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
gtk_object_add_arg_type ("GtkScrolledWindow::viewport",
GTK_TYPE_VIEWPORT,
GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT,
ARG_VIEWPORT);
gtk_object_add_arg_type ("GtkScrolledWindow::hscrollbar_policy",
GTK_TYPE_POLICY_TYPE,
GTK_ARG_READWRITE,
ARG_HSCROLLBAR_POLICY);
gtk_object_add_arg_type ("GtkScrolledWindow::vscrollbar_policy",
GTK_TYPE_POLICY_TYPE,
GTK_ARG_READWRITE,
ARG_VSCROLLBAR_POLICY);
object_class->set_arg = gtk_scrolled_window_set_arg;
object_class->get_arg = gtk_scrolled_window_get_arg;
object_class->destroy = gtk_scrolled_window_destroy;
object_class->finalize = gtk_scrolled_window_finalize;
widget_class->map = gtk_scrolled_window_map;
widget_class->unmap = gtk_scrolled_window_unmap;
widget_class->draw = gtk_scrolled_window_draw;
widget_class->size_request = gtk_scrolled_window_size_request;
widget_class->size_allocate = gtk_scrolled_window_size_allocate;
container_class->add = gtk_scrolled_window_add;
container_class->remove = gtk_scrolled_window_remove;
container_class->forall = gtk_scrolled_window_forall;
class->scrollbar_spacing = 5;
}
static void
gtk_scrolled_window_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkScrolledWindow *scrolled_window;
scrolled_window = GTK_SCROLLED_WINDOW (object);
switch (arg_id)
{
GtkWidget *viewport;
case ARG_VIEWPORT:
g_return_if_fail (scrolled_window->viewport == NULL);
viewport = GTK_VALUE_POINTER (*arg);
if (!viewport)
viewport = gtk_viewport_new (NULL, NULL);
scrolled_window->viewport = viewport;
gtk_scrolled_window_construct (scrolled_window, NULL, NULL);
case ARG_HSCROLLBAR_POLICY:
gtk_scrolled_window_set_policy (scrolled_window,
GTK_VALUE_ENUM (*arg),
scrolled_window->vscrollbar_policy);
break;
case ARG_VSCROLLBAR_POLICY:
gtk_scrolled_window_set_policy (scrolled_window,
scrolled_window->hscrollbar_policy,
GTK_VALUE_ENUM (*arg));
break;
default:
break;
}
}
static void
gtk_scrolled_window_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkScrolledWindow *scrolled_window;
scrolled_window = GTK_SCROLLED_WINDOW (object);
switch (arg_id)
{
case ARG_VIEWPORT:
GTK_VALUE_POINTER (*arg) = scrolled_window->viewport;
break;
case ARG_HSCROLLBAR_POLICY:
GTK_VALUE_ENUM (*arg) = scrolled_window->hscrollbar_policy;
break;
case ARG_VSCROLLBAR_POLICY:
GTK_VALUE_ENUM (*arg) = scrolled_window->vscrollbar_policy;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
static void
gtk_scrolled_window_init (GtkScrolledWindow *scrolled_window)
{
GTK_WIDGET_SET_FLAGS (scrolled_window, GTK_NO_WINDOW);
gtk_container_set_resize_mode (GTK_CONTAINER (scrolled_window), GTK_RESIZE_QUEUE);
scrolled_window->hscrollbar = NULL;
scrolled_window->vscrollbar = NULL;
scrolled_window->hscrollbar_policy = GTK_POLICY_ALWAYS;
scrolled_window->vscrollbar_policy = GTK_POLICY_ALWAYS;
}
GtkWidget*
gtk_scrolled_window_new (GtkAdjustment *hadjustment,
GtkAdjustment *vadjustment)
{
GtkWidget *scrolled_window;
scrolled_window = gtk_type_new (GTK_TYPE_SCROLLED_WINDOW);
gtk_scrolled_window_construct (GTK_SCROLLED_WINDOW (scrolled_window), hadjustment, vadjustment);
return scrolled_window;
}
void
gtk_scrolled_window_construct (GtkScrolledWindow *scrolled_window,
GtkAdjustment *hadjustment,
GtkAdjustment *vadjustment)
{
g_return_if_fail (scrolled_window != NULL);
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
g_return_if_fail (scrolled_window->hscrollbar == NULL);
g_return_if_fail (scrolled_window->vscrollbar == NULL);
if (scrolled_window->viewport)
g_return_if_fail (hadjustment == NULL && vadjustment == NULL);
else
scrolled_window->viewport = gtk_viewport_new (hadjustment, vadjustment);
hadjustment = gtk_viewport_get_hadjustment (GTK_VIEWPORT (scrolled_window->viewport));
vadjustment = gtk_viewport_get_vadjustment (GTK_VIEWPORT (scrolled_window->viewport));
gtk_container_set_resize_mode (GTK_CONTAINER (scrolled_window->viewport), GTK_RESIZE_PARENT);
gtk_signal_connect (GTK_OBJECT (hadjustment), "changed",
(GtkSignalFunc) gtk_scrolled_window_adjustment_changed,
(gpointer) scrolled_window);
gtk_signal_connect (GTK_OBJECT (vadjustment), "changed",
(GtkSignalFunc) gtk_scrolled_window_adjustment_changed,
(gpointer) scrolled_window);
scrolled_window->hscrollbar = gtk_hscrollbar_new (hadjustment);
scrolled_window->vscrollbar = gtk_vscrollbar_new (vadjustment);
gtk_widget_set_parent (scrolled_window->viewport, GTK_WIDGET (scrolled_window));
gtk_widget_set_parent (scrolled_window->hscrollbar, GTK_WIDGET (scrolled_window));
gtk_widget_set_parent (scrolled_window->vscrollbar, GTK_WIDGET (scrolled_window));
gtk_widget_show (scrolled_window->viewport);
gtk_widget_show (scrolled_window->hscrollbar);
gtk_widget_show (scrolled_window->vscrollbar);
gtk_widget_ref (scrolled_window->viewport);
gtk_widget_ref (scrolled_window->hscrollbar);
gtk_widget_ref (scrolled_window->vscrollbar);
}
GtkAdjustment*
gtk_scrolled_window_get_hadjustment (GtkScrolledWindow *scrolled_window)
{
g_return_val_if_fail (scrolled_window != NULL, NULL);
g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), NULL);
return gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar));
}
GtkAdjustment*
gtk_scrolled_window_get_vadjustment (GtkScrolledWindow *scrolled_window)
{
g_return_val_if_fail (scrolled_window != NULL, NULL);
g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), NULL);
return gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar));
}
void
gtk_scrolled_window_set_policy (GtkScrolledWindow *scrolled_window,
GtkPolicyType hscrollbar_policy,
GtkPolicyType vscrollbar_policy)
{
g_return_if_fail (scrolled_window != NULL);
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
if ((scrolled_window->hscrollbar_policy != hscrollbar_policy) ||
(scrolled_window->vscrollbar_policy != vscrollbar_policy))
{
scrolled_window->hscrollbar_policy = hscrollbar_policy;
scrolled_window->vscrollbar_policy = vscrollbar_policy;
if (GTK_WIDGET (scrolled_window)->parent)
gtk_widget_queue_resize (GTK_WIDGET (scrolled_window));
}
}
static void
gtk_scrolled_window_destroy (GtkObject *object)
{
GtkScrolledWindow *scrolled_window;
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (object));
scrolled_window = GTK_SCROLLED_WINDOW (object);
gtk_widget_destroy (scrolled_window->viewport);
gtk_widget_destroy (scrolled_window->hscrollbar);
gtk_widget_destroy (scrolled_window->vscrollbar);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
gtk_scrolled_window_finalize (GtkObject *object)
{
GtkScrolledWindow *scrolled_window;
scrolled_window = GTK_SCROLLED_WINDOW (object);
gtk_widget_unref (scrolled_window->viewport);
gtk_widget_unref (scrolled_window->hscrollbar);
gtk_widget_unref (scrolled_window->vscrollbar);
GTK_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gtk_scrolled_window_map (GtkWidget *widget)
{
GtkScrolledWindow *scrolled_window;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (widget));
if (!GTK_WIDGET_MAPPED (widget))
{
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
scrolled_window = GTK_SCROLLED_WINDOW (widget);
if (GTK_WIDGET_VISIBLE (scrolled_window->viewport) &&
!GTK_WIDGET_MAPPED (scrolled_window->viewport))
gtk_widget_map (scrolled_window->viewport);
if (GTK_WIDGET_VISIBLE (scrolled_window->hscrollbar) &&
!GTK_WIDGET_MAPPED (scrolled_window->hscrollbar))
gtk_widget_map (scrolled_window->hscrollbar);
if (GTK_WIDGET_VISIBLE (scrolled_window->vscrollbar) &&
!GTK_WIDGET_MAPPED (scrolled_window->vscrollbar))
gtk_widget_map (scrolled_window->vscrollbar);
}
}
static void
gtk_scrolled_window_unmap (GtkWidget *widget)
{
GtkScrolledWindow *scrolled_window;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (widget));
if (GTK_WIDGET_MAPPED (widget))
{
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
scrolled_window = GTK_SCROLLED_WINDOW (widget);
if (GTK_WIDGET_MAPPED (scrolled_window->viewport))
gtk_widget_unmap (scrolled_window->viewport);
if (GTK_WIDGET_MAPPED (scrolled_window->hscrollbar))
gtk_widget_unmap (scrolled_window->hscrollbar);
if (GTK_WIDGET_MAPPED (scrolled_window->vscrollbar))
gtk_widget_unmap (scrolled_window->vscrollbar);
}
}
static void
gtk_scrolled_window_draw (GtkWidget *widget,
GdkRectangle *area)
{
GtkScrolledWindow *scrolled_window;
GdkRectangle child_area;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
scrolled_window = GTK_SCROLLED_WINDOW (widget);
if (gtk_widget_intersect (scrolled_window->viewport, area, &child_area))
gtk_widget_draw (scrolled_window->viewport, &child_area);
if (gtk_widget_intersect (scrolled_window->hscrollbar, area, &child_area))
gtk_widget_draw (scrolled_window->hscrollbar, &child_area);
if (gtk_widget_intersect (scrolled_window->vscrollbar, area, &child_area))
gtk_widget_draw (scrolled_window->vscrollbar, &child_area);
}
}
static void
gtk_scrolled_window_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkScrolledWindow *scrolled_window;
gint extra_height;
gint extra_width;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (widget));
g_return_if_fail (requisition != NULL);
scrolled_window = GTK_SCROLLED_WINDOW (widget);
requisition->width = 0;
requisition->height = 0;
if (GTK_WIDGET_VISIBLE (scrolled_window->viewport))
{
gtk_widget_size_request (scrolled_window->viewport, &scrolled_window->viewport->requisition);
requisition->width += scrolled_window->viewport->requisition.width;
requisition->height += scrolled_window->viewport->requisition.height;
}
extra_width = 0;
extra_height = 0;
if ((scrolled_window->hscrollbar_policy == GTK_POLICY_AUTOMATIC) ||
GTK_WIDGET_VISIBLE (scrolled_window->hscrollbar))
{
gtk_widget_size_request (scrolled_window->hscrollbar,
&scrolled_window->hscrollbar->requisition);
requisition->width = MAX (requisition->width, scrolled_window->hscrollbar->requisition.width);
extra_height = SCROLLBAR_SPACING (scrolled_window) + scrolled_window->hscrollbar->requisition.height;
}
if ((scrolled_window->vscrollbar_policy == GTK_POLICY_AUTOMATIC) ||
GTK_WIDGET_VISIBLE (scrolled_window->vscrollbar))
{
gtk_widget_size_request (scrolled_window->vscrollbar,
&scrolled_window->vscrollbar->requisition);
requisition->height = MAX (requisition->height, scrolled_window->vscrollbar->requisition.height);
extra_width = SCROLLBAR_SPACING (scrolled_window) + scrolled_window->vscrollbar->requisition.width;
}
requisition->width += GTK_CONTAINER (widget)->border_width * 2 + extra_width;
requisition->height += GTK_CONTAINER (widget)->border_width * 2 + extra_height;
}
static void
gtk_scrolled_window_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkScrolledWindow *scrolled_window;
GtkAllocation viewport_allocation;
GtkAllocation child_allocation;
guint previous_hvis;
guint previous_vvis;
gint count;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (widget));
g_return_if_fail (allocation != NULL);
scrolled_window = GTK_SCROLLED_WINDOW (widget);
widget->allocation = *allocation;
if (scrolled_window->hscrollbar_policy == GTK_POLICY_ALWAYS)
scrolled_window->hscrollbar_visible = TRUE;
if (scrolled_window->vscrollbar_policy == GTK_POLICY_ALWAYS)
scrolled_window->vscrollbar_visible = TRUE;
if (GTK_WIDGET_VISIBLE (scrolled_window->viewport))
{
count = 0;
do {
gtk_scrolled_window_viewport_allocate (widget, &viewport_allocation);
child_allocation.x = viewport_allocation.x + allocation->x;
child_allocation.y = viewport_allocation.y + allocation->y;
child_allocation.width = viewport_allocation.width;
child_allocation.height = viewport_allocation.height;
previous_hvis = scrolled_window->hscrollbar_visible;
previous_vvis = scrolled_window->vscrollbar_visible;
gtk_widget_size_allocate (scrolled_window->viewport, &child_allocation);
/* If, after the first iteration, the hscrollbar and the
* vscrollbar flip visiblity, then we need both.
*/
if ((count++) &&
(previous_hvis != scrolled_window->hscrollbar_visible) &&
(previous_vvis != scrolled_window->vscrollbar_visible))
{
scrolled_window->hscrollbar_visible = TRUE;
scrolled_window->vscrollbar_visible = TRUE;
break;
}
count++;
} while ((previous_hvis != scrolled_window->hscrollbar_visible) ||
(previous_vvis != scrolled_window->vscrollbar_visible));
}
if (scrolled_window->hscrollbar_visible)
{
if (!GTK_WIDGET_VISIBLE (scrolled_window->hscrollbar))
gtk_widget_show (scrolled_window->hscrollbar);
child_allocation.x = viewport_allocation.x;
child_allocation.y = viewport_allocation.y + viewport_allocation.height + SCROLLBAR_SPACING (scrolled_window);
child_allocation.width = viewport_allocation.width;
child_allocation.height = scrolled_window->hscrollbar->requisition.height;
child_allocation.x += allocation->x;
child_allocation.y += allocation->y;
gtk_widget_size_allocate (scrolled_window->hscrollbar, &child_allocation);
}
else
{
if (GTK_WIDGET_VISIBLE (scrolled_window->hscrollbar))
gtk_widget_hide (scrolled_window->hscrollbar);
}
if (scrolled_window->vscrollbar_visible)
{
if (!GTK_WIDGET_VISIBLE (scrolled_window->vscrollbar))
gtk_widget_show (scrolled_window->vscrollbar);
child_allocation.x = viewport_allocation.x + viewport_allocation.width + SCROLLBAR_SPACING (scrolled_window);
child_allocation.y = viewport_allocation.y;
child_allocation.width = scrolled_window->vscrollbar->requisition.width;
child_allocation.height = viewport_allocation.height;
child_allocation.x += allocation->x;
child_allocation.y += allocation->y;
gtk_widget_size_allocate (scrolled_window->vscrollbar, &child_allocation);
}
else
{
if (GTK_WIDGET_VISIBLE (scrolled_window->vscrollbar))
gtk_widget_hide (scrolled_window->vscrollbar);
}
}
static void
gtk_scrolled_window_add (GtkContainer *container,
GtkWidget *widget)
{
GtkScrolledWindow *scrolled_window;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (container));
g_return_if_fail (widget != NULL);
scrolled_window = GTK_SCROLLED_WINDOW (container);
gtk_container_add (GTK_CONTAINER (scrolled_window->viewport), widget);
}
static void
gtk_scrolled_window_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkScrolledWindow *scrolled_window;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (container));
g_return_if_fail (widget != NULL);
scrolled_window = GTK_SCROLLED_WINDOW (container);
if (scrolled_window->viewport == widget ||
scrolled_window->hscrollbar == widget ||
scrolled_window->vscrollbar == widget)
{
/* this happens during destroy */
gtk_widget_unparent (widget);
}
else
gtk_container_remove (GTK_CONTAINER (scrolled_window->viewport), widget);
}
static void
gtk_scrolled_window_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkScrolledWindow *scrolled_window;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (container));
g_return_if_fail (callback != NULL);
scrolled_window = GTK_SCROLLED_WINDOW (container);
if (include_internals)
{
if (scrolled_window->viewport)
(* callback) (scrolled_window->viewport, callback_data);
(* callback) (scrolled_window->vscrollbar, callback_data);
(* callback) (scrolled_window->hscrollbar, callback_data);
}
else if (scrolled_window->viewport)
gtk_container_foreach (GTK_CONTAINER (scrolled_window->viewport), callback, callback_data);
}
static void
gtk_scrolled_window_viewport_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkScrolledWindow *scrolled_window;
g_return_if_fail (widget != NULL);
g_return_if_fail (allocation != NULL);
scrolled_window = GTK_SCROLLED_WINDOW (widget);
allocation->x = GTK_CONTAINER (widget)->border_width;
allocation->y = GTK_CONTAINER (widget)->border_width;
allocation->width = MAX (1, widget->allocation.width - allocation->x * 2);
allocation->height = MAX (1, widget->allocation.height - allocation->y * 2);
if (scrolled_window->vscrollbar_visible)
allocation->width = MAX (1,
allocation->width - (scrolled_window->vscrollbar->requisition.width + SCROLLBAR_SPACING (scrolled_window)));
if (scrolled_window->hscrollbar_visible)
allocation->height = MAX (1,
allocation->height - (scrolled_window->hscrollbar->requisition.height + SCROLLBAR_SPACING (scrolled_window)));
}
static void
gtk_scrolled_window_adjustment_changed (GtkAdjustment *adjustment,
gpointer data)
{
GtkScrolledWindow *scrolled_win;
g_return_if_fail (adjustment != NULL);
g_return_if_fail (data != NULL);
scrolled_win = GTK_SCROLLED_WINDOW (data);
if (adjustment == gtk_range_get_adjustment (GTK_RANGE (scrolled_win->hscrollbar)))
{
if (scrolled_win->hscrollbar_policy == GTK_POLICY_AUTOMATIC)
{
scrolled_win->hscrollbar_visible =
((adjustment->upper - adjustment->lower) > adjustment->page_size);
}
}
else if (adjustment == gtk_range_get_adjustment (GTK_RANGE (scrolled_win->vscrollbar)))
{
if (scrolled_win->vscrollbar_policy == GTK_POLICY_AUTOMATIC)
{
scrolled_win->vscrollbar_visible =
((adjustment->upper - adjustment->lower) > adjustment->page_size);
}
}
else
{
g_warning ("could not determine which adjustment scrollbar received change signal for");
return;
}
}