Grcov report - translate-show-surface.c

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/*

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 * Copyright © 2005 Red Hat, Inc.

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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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 * Red Hat, Inc. 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. Red Hat, Inc. 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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 * RED HAT, INC. 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 RED HAT, INC. 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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 * Author: Carl D. Worth <cworth@cworth.org>

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*/

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/* Bug history

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 * 2005-04-11 Carl Worth <cworth@cworth.org>

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 *   It appears that calling cairo_show_surface after cairo_translate

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 *   somehow applies the translation twice to the surface being

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 *   shown. This is pretty easy to demonstrate by bringing up xsvg on

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 *   an SVG file with an <image> and panning around a bit with the

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 *   arrow keys.

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 *   This is almost certainly a regression, and I suspect there may be

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 *   some interaction with the fix for move-to-show-surface.

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 * 2005-04-12 Carl Worth <cworth@cworth.org>

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 *   I committed a fix for this bug today.

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*/

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#include "cairo-test.h"

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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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    cairo_surface_t *surface;

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3

    uint32_t colors[4] = {

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	0xffffffff, 0xffff0000,

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	0xff00ff00, 0xff0000ff

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};

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    int i;

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    for (i=0; i < 4; i++) {

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	surface = cairo_image_surface_create_for_data ((unsigned char *) &colors[i],

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						       CAIRO_FORMAT_RGB24,

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						       1, 1, 4);

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	cairo_save (cr);

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	    cairo_translate (cr, i % 2, i / 2);

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	    cairo_set_source_surface (cr, surface, 0, 0);

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	    cairo_paint (cr);

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	cairo_restore (cr);

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	cairo_surface_finish (surface); /* colors will go out of scope */

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	cairo_surface_destroy (surface);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (translate_show_surface,

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	    "Tests calls to cairo_show_surface after cairo_translate",

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	    "transform", /* keywords */

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	    NULL, /* requirements */

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	    2, 2,

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	    NULL, draw)