mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
synced 2025-12-28 12:10:12 +01:00
a501f8f6d8
These two tests currently fail only for the PS backend, but they've done so since before the last major release. The final image result we're getting is definitely wrong in both cases, but we have not yet been able to verify if this is due to bugs in cairo (generating PostScript) or in ghostscript (interpreting and rasterzing the PostScript).
127 lines
3.8 KiB
C
127 lines
3.8 KiB
C
/*
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* Copyright © 2006 Jeff Muizelaar
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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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* Jeff Muizelaar 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. Jeff Muizelaar 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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* JEFF MUIZELAAR 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 JEFF MUIZELAAR 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: Jeff Muizelaar <jeff@infidigm.net>
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*/
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#include "cairo-test.h"
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#define PAD 3.0
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#define LINE_WIDTH 6.0
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
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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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"degenerate-path",
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"Tests the behaviour of degenerate paths with different cap types"
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"\nPS backend currently fails for unknown reason (cairo? GS?).",
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3*(PAD+LINE_WIDTH+PAD), 8*(LINE_WIDTH+PAD) + PAD,
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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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const cairo_line_cap_t cap[] = { CAIRO_LINE_CAP_ROUND, CAIRO_LINE_CAP_SQUARE, CAIRO_LINE_CAP_BUTT };
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size_t i;
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double dash[] = {2, 2};
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double dash_long[] = {6, 6};
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cairo_set_source_rgb (cr, 1, 0, 0);
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for (i=0; i<ARRAY_SIZE(cap); i++) {
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cairo_save (cr);
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cairo_set_line_cap (cr, cap[i]);
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/* simple degenerate paths */
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cairo_set_line_width (cr, LINE_WIDTH);
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cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_stroke (cr);
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cairo_translate (cr, 0, 3*PAD);
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cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_close_path (cr);
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cairo_stroke (cr);
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/* degenerate paths starting with dash on */
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cairo_set_dash (cr, dash, 2, 0.);
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cairo_translate (cr, 0, 3*PAD);
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cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_stroke (cr);
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cairo_translate (cr, 0, 3*PAD);
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cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_close_path (cr);
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cairo_stroke (cr);
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/* degenerate paths starting with dash off */
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/* these should not draw anything */
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cairo_set_dash (cr, dash, 2, 2.);
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cairo_translate (cr, 0, 3*PAD);
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cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_stroke (cr);
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cairo_translate (cr, 0, 3*PAD);
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cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_close_path (cr);
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cairo_stroke (cr);
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/* this should draw a single degenerate sub-path
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* at the end of the path */
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cairo_set_dash (cr, dash_long, 2, 6.);
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cairo_translate (cr, 0, 3*PAD);
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cairo_move_to (cr, LINE_WIDTH + 6.0, LINE_WIDTH);
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cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_stroke (cr);
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/* this should draw a single degenerate sub-path
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* at the end of the path. The difference between this
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* and the above is that this ends with a degenerate sub-path*/
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cairo_set_dash (cr, dash_long, 2, 6.);
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cairo_translate (cr, 0, 3*PAD);
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cairo_move_to (cr, LINE_WIDTH + 6.0, LINE_WIDTH);
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cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
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cairo_stroke (cr);
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cairo_restore (cr);
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cairo_translate (cr, PAD+LINE_WIDTH+PAD, 0);
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}
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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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