gtk2/gtk/gtkhbbox.c
Tim Janik 8a8202ce13 applied patch from Xan Lopez which adds GTK_BUTTONBOX_CENTER to
Thu Feb  8 13:07:08 2007  Tim Janik  <timj@imendio.com>

        * applied patch from Xan Lopez which adds GTK_BUTTONBOX_CENTER to
        GtkButtonBox (bug #336159).

        * gtk/gtkenums.h:
        * gtk/gtkvbbox.c, gtk/gtkhbbox.c, gtk/gtkbbox.c:
        support GTK_BUTTONBOX_CENTER.

        * tests/testbbox.c: new button box test, which allows testing of 
        the various button box properties.

        * tests/testgtk.c: added GTK_BUTTONBOX_CENTER. to button box test.



svn path=/trunk/; revision=17276
2007-02-08 12:11:02 +00:00

292 lines
7.7 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 Lesser 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
* Lesser General Public License for more details.
*
* 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.
*/
/*
* 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
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <config.h>
#include "gtkhbbox.h"
#include "gtkintl.h"
#include "gtkalias.h"
static void gtk_hbutton_box_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_hbutton_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gint default_spacing = 30;
static gint default_layout_style = GTK_BUTTONBOX_EDGE;
G_DEFINE_TYPE (GtkHButtonBox, gtk_hbutton_box, GTK_TYPE_BUTTON_BOX)
static void
gtk_hbutton_box_class_init (GtkHButtonBoxClass *class)
{
GtkWidgetClass *widget_class;
widget_class = (GtkWidgetClass*) class;
widget_class->size_request = gtk_hbutton_box_size_request;
widget_class->size_allocate = gtk_hbutton_box_size_allocate;
}
static void
gtk_hbutton_box_init (GtkHButtonBox *hbutton_box)
{
/* button_box_init has done everything already */
}
GtkWidget*
gtk_hbutton_box_new (void)
{
GtkHButtonBox *hbutton_box;
hbutton_box = g_object_new (GTK_TYPE_HBUTTON_BOX, NULL);
return GTK_WIDGET (hbutton_box);
}
/* set default value for spacing */
void
gtk_hbutton_box_set_spacing_default (gint spacing)
{
default_spacing = spacing;
}
/* set default value for layout style */
void
gtk_hbutton_box_set_layout_default (GtkButtonBoxStyle layout)
{
g_return_if_fail (layout >= GTK_BUTTONBOX_DEFAULT_STYLE &&
layout <= GTK_BUTTONBOX_CENTER);
default_layout_style = layout;
}
/* get default value for spacing */
gint
gtk_hbutton_box_get_spacing_default (void)
{
return default_spacing;
}
/* get default value for layout style */
GtkButtonBoxStyle
gtk_hbutton_box_get_layout_default (void)
{
return default_layout_style;
}
static void
gtk_hbutton_box_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkBox *box;
GtkButtonBox *bbox;
gint nvis_children;
gint child_width;
gint child_height;
gint spacing;
GtkButtonBoxStyle layout;
box = GTK_BOX (widget);
bbox = GTK_BUTTON_BOX (widget);
spacing = box->spacing;
layout = bbox->layout_style != GTK_BUTTONBOX_DEFAULT_STYLE
? bbox->layout_style : default_layout_style;
_gtk_button_box_child_requisition (widget,
&nvis_children,
NULL,
&child_width,
&child_height);
if (nvis_children == 0)
{
requisition->width = 0;
requisition->height = 0;
}
else
{
switch (layout)
{
case GTK_BUTTONBOX_SPREAD:
requisition->width =
nvis_children*child_width + ((nvis_children+1)*spacing);
break;
case GTK_BUTTONBOX_EDGE:
case GTK_BUTTONBOX_START:
case GTK_BUTTONBOX_END:
case GTK_BUTTONBOX_CENTER:
requisition->width = nvis_children*child_width + ((nvis_children-1)*spacing);
break;
default:
g_assert_not_reached();
break;
}
requisition->height = child_height;
}
requisition->width += GTK_CONTAINER (box)->border_width * 2;
requisition->height += GTK_CONTAINER (box)->border_width * 2;
}
static void
gtk_hbutton_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkBox *base_box;
GtkButtonBox *box;
GtkBoxChild *child;
GList *children;
GtkAllocation child_allocation;
gint nvis_children;
gint n_secondaries;
gint child_width;
gint child_height;
gint x = 0;
gint secondary_x = 0;
gint y = 0;
gint width;
gint childspace;
gint childspacing = 0;
GtkButtonBoxStyle layout;
gint spacing;
base_box = GTK_BOX (widget);
box = GTK_BUTTON_BOX (widget);
spacing = base_box->spacing;
layout = box->layout_style != GTK_BUTTONBOX_DEFAULT_STYLE
? box->layout_style : default_layout_style;
_gtk_button_box_child_requisition (widget,
&nvis_children,
&n_secondaries,
&child_width,
&child_height);
widget->allocation = *allocation;
width = allocation->width - GTK_CONTAINER (box)->border_width*2;
switch (layout)
{
case GTK_BUTTONBOX_SPREAD:
childspacing = (width - (nvis_children * child_width)) / (nvis_children + 1);
x = allocation->x + GTK_CONTAINER (box)->border_width + childspacing;
secondary_x = x + ((nvis_children - n_secondaries) * (child_width + childspacing));
break;
case GTK_BUTTONBOX_EDGE:
if (nvis_children >= 2)
{
childspacing = (width - (nvis_children * child_width)) / (nvis_children - 1);
x = allocation->x + GTK_CONTAINER (box)->border_width;
secondary_x = x + ((nvis_children - n_secondaries) * (child_width + childspacing));
}
else
{
/* one or zero children, just center */
childspacing = width;
x = secondary_x = allocation->x + (allocation->width - child_width) / 2;
}
break;
case GTK_BUTTONBOX_START:
childspacing = spacing;
x = allocation->x + GTK_CONTAINER (box)->border_width;
secondary_x = allocation->x + allocation->width
- child_width * n_secondaries
- spacing * (n_secondaries - 1)
- GTK_CONTAINER (box)->border_width;
break;
case GTK_BUTTONBOX_END:
childspacing = spacing;
x = allocation->x + allocation->width
- child_width * (nvis_children - n_secondaries)
- spacing * (nvis_children - n_secondaries - 1)
- GTK_CONTAINER (box)->border_width;
secondary_x = allocation->x + GTK_CONTAINER (box)->border_width;
break;
case GTK_BUTTONBOX_CENTER:
childspacing = spacing;
x = allocation->x +
(allocation->width
- (child_width * (nvis_children - n_secondaries)
+ spacing * (nvis_children - n_secondaries - 1)))/2
+ (n_secondaries * child_width + n_secondaries * spacing)/2
+ GTK_CONTAINER (box)->border_width;
secondary_x = allocation->x + GTK_CONTAINER (box)->border_width;
break;
default:
g_assert_not_reached();
break;
}
y = allocation->y + (allocation->height - child_height) / 2;
childspace = child_width + childspacing;
children = GTK_BOX (box)->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child->widget))
{
child_allocation.width = child_width;
child_allocation.height = child_height;
child_allocation.y = y;
if (child->is_secondary)
{
child_allocation.x = secondary_x;
secondary_x += childspace;
}
else
{
child_allocation.x = x;
x += childspace;
}
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
child_allocation.x = (allocation->x + allocation->width) - (child_allocation.x + child_width - allocation->x);
gtk_widget_size_allocate (child->widget, &child_allocation);
}
}
}
#define __GTK_HBUTTON_BOX_C__
#include "gtkaliasdef.c"