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Diffstat (limited to 'libs/cairo-1.16.0/test/degenerate-path.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/degenerate-path.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/degenerate-path.c b/libs/cairo-1.16.0/test/degenerate-path.c new file mode 100644 index 0000000..aa5f822 --- /dev/null +++ b/libs/cairo-1.16.0/test/degenerate-path.c @@ -0,0 +1,120 @@ +/* + * Copyright © 2006 Jeff Muizelaar + * + * 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 + * Jeff Muizelaar not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Jeff Muizelaar makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * JEFF MUIZELAAR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL JEFF MUIZELAAR 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. + * + * Author: Jeff Muizelaar <jeff@infidigm.net> + */ + +#include "cairo-test.h" + +#define PAD 3.0 +#define LINE_WIDTH 6.0 + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + const cairo_line_cap_t cap[] = { CAIRO_LINE_CAP_ROUND, CAIRO_LINE_CAP_SQUARE, CAIRO_LINE_CAP_BUTT }; + size_t i; + double dash[] = {2, 2}; + double dash_long[] = {6, 6}; + + cairo_set_source_rgb (cr, 1, 0, 0); + + for (i = 0; i < ARRAY_LENGTH (cap); i++) { + cairo_save (cr); + + cairo_set_line_cap (cr, cap[i]); + + /* simple degenerate paths */ + cairo_set_line_width (cr, LINE_WIDTH); + cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_stroke (cr); + + cairo_translate (cr, 0, 3*PAD); + cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_close_path (cr); + cairo_stroke (cr); + + /* degenerate paths starting with dash on */ + cairo_set_dash (cr, dash, 2, 0.); + + cairo_translate (cr, 0, 3*PAD); + cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_stroke (cr); + + cairo_translate (cr, 0, 3*PAD); + cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_close_path (cr); + cairo_stroke (cr); + + /* degenerate paths starting with dash off */ + /* these should not draw anything */ + cairo_set_dash (cr, dash, 2, 2.); + + cairo_translate (cr, 0, 3*PAD); + cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_stroke (cr); + + cairo_translate (cr, 0, 3*PAD); + cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_close_path (cr); + cairo_stroke (cr); + + /* this should draw a single degenerate sub-path + * at the end of the path */ + cairo_set_dash (cr, dash_long, 2, 6.); + + cairo_translate (cr, 0, 3*PAD); + cairo_move_to (cr, LINE_WIDTH + 6.0, LINE_WIDTH); + cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_stroke (cr); + + /* this should draw a single degenerate sub-path + * at the end of the path. The difference between this + * and the above is that this ends with a degenerate sub-path*/ + cairo_set_dash (cr, dash_long, 2, 6.); + + cairo_translate (cr, 0, 3*PAD); + cairo_move_to (cr, LINE_WIDTH + 6.0, LINE_WIDTH); + cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH); + cairo_stroke (cr); + + cairo_restore (cr); + + cairo_translate (cr, PAD+LINE_WIDTH+PAD, 0); + } + return CAIRO_TEST_SUCCESS; +} + +/* + * XFAIL: undefined behaviour in PS, needs path editing to convert degenerate + * segments into circles/rectangles as expected by cairo + */ +CAIRO_TEST (degenerate_path, + "Tests the behaviour of degenerate paths with different cap types", + "degenerate", /* keywords */ + NULL, /* requirements */ + 3*(PAD+LINE_WIDTH+PAD), 8*(LINE_WIDTH+PAD) + PAD, + NULL, draw) |