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[test] Add group-clip

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Larry Ewing found an ancient and nasty bug whereby a path was not
corrected whilst pushing and popping groups.
This commit is contained in:
Chris Wilson 2009-06-19 19:00:39 +01:00
parent 0a34abace7
commit 851c883962
5 changed files with 60 additions and 0 deletions
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1
AUTHORS
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@ -23,6 +23,7 @@ John Ellson <ellson@research.att.com> First font/glyph extents functions
Michael Emmel <mike.emmel@gmail.com> DirectFB backend
Miklós Erdélyi <erdelyim@gmail.com> Fix typo leading to a crash
Behdad Esfahbod <behdad@behdad.org> Huge piles of bug fixes, improvements, and general maintenance
Larry Ewing <lewing@novell.com> Test case for group-clip
Brian Ewins <Brian.Ewins@gmail.com> ATSUI maintenance (first success at making it really work)
Bertram Felgenhauer <int-e@gmx.de> Fixes for subtle arithmetic errors
Damian Frank <damian.frank@gmail.com> Build system improvements for win32

1
test/Makefile.am
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@ -500,6 +500,7 @@ REFERENCE_IMAGES = \
gradient-constant-alpha.rgb24.ref.png \
gradient-zero-stops.ref.png \
gradient-zero-stops.rgb24.ref.png \
group-clip.ref.png \
group-paint.ref.png \
huge-linear.ps3.ref.png \
huge-linear.ref.png \

1
test/Makefile.sources
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@ -79,6 +79,7 @@ test_sources = \
gradient-alpha.c \
gradient-constant-alpha.c \
gradient-zero-stops.c \
group-clip.c \
group-paint.c \
huge-linear.c \
huge-radial.c \

57
test/group-clip.c Normal file
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@ -0,0 +1,57 @@
/*
* Copyright © Chris Wilson, 2008
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Chris Wilson not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Red Hat, Inc. makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Authors: Chris Wilson <chris@chris-wilson.co.uk>
* Larry Ewing <lewing@novell.com>
*/
#include "cairo-test.h"
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_rectangle (cr, 25, 25, width, height);
cairo_clip_preserve (cr);
cairo_push_group (cr);
cairo_set_source_rgb (cr, 0, 0, 1);
cairo_fill (cr);
cairo_rectangle (cr, 0, 0, width, height);
cairo_pop_group_to_source (cr);
cairo_paint (cr);
cairo_reset_clip (cr);
cairo_clip_preserve (cr);
cairo_set_source_rgba (cr, 1, 0, 0, .5);
cairo_paint (cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (group_clip,
"test preserving paths across groups",
"group", /* keywords */
NULL, /* requirements */
40 + 25, 40 + 25,
NULL, draw)

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