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https://gitlab.freedesktop.org/cairo/cairo.git
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a172d87b4c
It's sad to have to do this. Back with commit1a9809baawas the original fix for device-offset-scale, (right after the test was added), and it fixed it for all backends, including SVG. The fix involved combining device_transform and CTM into the pattern matrix. But then, we added the mask-transformed-image and mask-transformed-similar tests, and commit20be3182effor fixing an SVG-specific bug with masks. That fix involved subtracting away the pattern matrix when emitting a mask to adhere to SVG semantics. Unfortunately, this change also made the device-offset-scale test start failing. A correct fix would probably subtract away only the CTM portion and not the devive_transform. However, the _cairo_svg_surface_mask function sees only a pattern matrix and doesn't know how to separate it into CTM and device_transform pieces. So fixing this will probably require a change to the surface-backend interface. And since we're not willing to do that so close to a major release, we're adding yet another XFAIL.
82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/*
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* Copyright © 2008 Mozilla Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of
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* Mozilla Corporation not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Mozilla Corporation makes no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* MOZILLA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL MOZILLA CORPORATION BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Authors: Michael Ventnor, Jeff Muizelaar
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*/
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#include "cairo-test.h"
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#define WIDTH 20
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#define HEIGHT 20
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static cairo_test_draw_function_t draw;
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static const cairo_test_t test = {
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"device-offset-scale",
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"Test that the device-offset transform is transformed by the ctm."
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"\nCurrently fails with the SVG backend.",
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WIDTH, HEIGHT,
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draw
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};
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static cairo_test_status_t
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draw (cairo_t *cr, int width, int height)
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{
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cairo_t *second_cr;
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cairo_surface_t *second = cairo_image_surface_create (CAIRO_FORMAT_A8, 10, 10);
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/* fill with black so we don't need an rgb test case */
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_paint (cr);
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/* adjust the offset so that the second rectangle will fit on the surface */
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cairo_surface_set_device_offset (second, -6, -6);
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cairo_scale (cr, 0.5, 0.5);
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/* draw the first rectangle */
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cairo_set_source_rgb (cr, 0, 0, 0.4);
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cairo_rectangle (cr, 6, 6, 10, 10);
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cairo_fill (cr);
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/* draw the second rectangle:
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* this rectangle should end up in the same place as the rectangle above
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* independent of the device offset of the surface it is painted on*/
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second_cr = cairo_create (second);
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cairo_rectangle (second_cr, 6, 6, 10, 10);
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cairo_fill (second_cr);
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/* paint the second rectangle on top of the first rectangle */
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cairo_set_source_rgb (cr, 0.5, 0.5, 0);
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cairo_mask_surface (cr, second, 0, 0);
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cairo_destroy (second_cr);
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cairo_surface_destroy (second);
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return CAIRO_TEST_SUCCESS;
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}
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int
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main (void)
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{
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return cairo_test (&test);
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}
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