mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-17 23:10:22 +00:00
c4384ce24f
Thu Aug 3 09:17:06 2000 Owen Taylor <otaylor@redhat.com>
* gdk/gdkrectangle.c (gdk_rectangle_intersect): Applied patch from
Peter Osterlund to simplify the code while keeping the
functionality the same.
84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/* GDK - The GIMP Drawing Kit
|
|
* 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 <gdk/gdk.h>
|
|
|
|
void
|
|
gdk_rectangle_union (GdkRectangle *src1,
|
|
GdkRectangle *src2,
|
|
GdkRectangle *dest)
|
|
{
|
|
gint dest_x, dest_y;
|
|
|
|
g_return_if_fail (src1 != NULL);
|
|
g_return_if_fail (src2 != NULL);
|
|
g_return_if_fail (dest != NULL);
|
|
|
|
dest_x = MIN (src1->x, src2->x);
|
|
dest_y = MIN (src1->y, src2->y);
|
|
dest->width = MAX (src1->x + src1->width, src2->x + src2->width) - dest_x;
|
|
dest->height = MAX (src1->y + src1->height, src2->y + src2->height) - dest_y;
|
|
dest->x = dest_x;
|
|
dest->y = dest_y;
|
|
}
|
|
|
|
gboolean
|
|
gdk_rectangle_intersect (GdkRectangle *src1,
|
|
GdkRectangle *src2,
|
|
GdkRectangle *dest)
|
|
{
|
|
gint dest_x, dest_y;
|
|
gint dest_w, dest_h;
|
|
gint return_val;
|
|
|
|
g_return_val_if_fail (src1 != NULL, FALSE);
|
|
g_return_val_if_fail (src2 != NULL, FALSE);
|
|
g_return_val_if_fail (dest != NULL, FALSE);
|
|
|
|
return_val = FALSE;
|
|
|
|
dest_x = MAX (src1->x, src2->x);
|
|
dest_y = MAX (src1->y, src2->y);
|
|
dest_w = MIN (src1->x + src1->width, src2->x + src2->width) - dest_x;
|
|
dest_h = MIN (src1->y + src1->height, src2->y + src2->height) - dest_y;
|
|
|
|
if (dest_w > 0 && dest_h > 0)
|
|
{
|
|
dest->x = dest_x;
|
|
dest->y = dest_y;
|
|
dest->width = dest_w;
|
|
dest->height = dest_h;
|
|
return_val = TRUE;
|
|
}
|
|
else
|
|
{
|
|
dest->width = 0;
|
|
dest->height = 0;
|
|
}
|
|
|
|
return return_val;
|
|
}
|