mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
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e90073f7dd
Avoid calling libtool to link every single test case, by building just one binary from all the sources. This binary is then given the task of choosing tests to run (based on user selection and individual test requirement), forking each test into its own process and accumulating the results.
100 lines
3 KiB
C
100 lines
3 KiB
C
/*
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* Copyright © 2005 Red Hat, Inc.
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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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* 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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*
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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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*
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* Author: Owen Taylor <otaylor@redhat.com>
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*/
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#include "cairo-test.h"
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#define IMAGE_WIDTH 19
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#define IMAGE_HEIGHT 19
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/* Basic test of dashed strokes, including a test for the negative
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* dash offset bug:
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*
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* https://bugs.freedesktop.org/show_bug.cgi?id=2729
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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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double dashes[] = { 1 };
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/* We draw in the default black, so paint white first. */
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cairo_save (cr);
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cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
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cairo_paint (cr);
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cairo_restore (cr);
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cairo_set_line_width (cr, 2);
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/* Basic 1-1 dash pattern */
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cairo_set_dash (cr, dashes, 1, 0.);
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cairo_move_to (cr, 1, 2);
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cairo_line_to (cr, 18, 2);
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cairo_stroke (cr);
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/* Adjust path by 0.5. Ideally this would give a constant 50%
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* gray, (but does not due to the location of the regular sample
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* grid points. */
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cairo_move_to (cr, 1.5, 5);
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cairo_line_to (cr, 18., 5);
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cairo_stroke (cr);
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/* Offset dash by 0.5, rather than the path */
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cairo_set_dash (cr, dashes, 1, 0.5);
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cairo_move_to (cr, 1, 8);
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cairo_line_to (cr, 18, 8);
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cairo_stroke (cr);
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/* Now, similar tests with negative dash offsets. */
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/* Basic 1-1 dash pattern dashing */
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cairo_set_dash (cr, dashes, 1, -4);
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cairo_move_to (cr, 1, 11);
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cairo_line_to (cr, 18, 11);
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cairo_stroke (cr);
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/* Adjust path by 0.5 */
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cairo_move_to (cr, 1.5, 14);
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cairo_line_to (cr, 18., 14);
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cairo_stroke (cr);
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/* Offset dash by 0.5 */
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cairo_set_dash (cr, dashes, 1, -3.5);
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cairo_move_to (cr, 1, 17);
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cairo_line_to (cr, 18, 17);
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cairo_stroke (cr);
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return CAIRO_TEST_SUCCESS;
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}
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CAIRO_TEST (dash_offset_negative,
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"Tests cairo_set_dash with a negative offset",
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"dash, stroke", /* keywords */
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NULL, /* requirements */
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IMAGE_WIDTH, IMAGE_HEIGHT,
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NULL, draw)
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