| /* |
| * 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 IMAGE_WIDTH 19 |
| #define IMAGE_HEIGHT 61 |
| |
| /* A test of the two extremes of dashing: a solid line |
| * and an invisible one. Also test that capping works |
| * on invisible lines. |
| */ |
| |
| static void |
| draw_dash (cairo_t *cr, double *dash, int num_dashes) |
| { |
| cairo_set_dash (cr, dash, num_dashes, 0.0); |
| cairo_move_to (cr, 1, 2); |
| cairo_line_to (cr, 18, 2); |
| cairo_stroke (cr); |
| cairo_translate (cr, 0, 3); |
| } |
| static cairo_test_status_t |
| draw (cairo_t *cr, int width, int height) |
| { |
| static double solid_line[] = { 4, 0 }; |
| static double invisible_line[] = { 0, 4 }; |
| static double dotted_line[] = { 0, 6 }; |
| static double zero_1_of_3[] = { 0, 2, 3 }; |
| static double zero_2_of_3[] = { 1, 0, 3 }; |
| static double zero_3_of_3[] = { 1, 2, 0 }; |
| static double zero_1_of_4[] = { 0, 2, 3, 4 }; |
| static double zero_2_of_4[] = { 1, 0, 3, 4 }; |
| static double zero_3_of_4[] = { 1, 2, 0, 4 }; |
| static double zero_4_of_4[] = { 1, 2, 3, 0 }; |
| static double zero_1_2_of_4[] = { 0, 0, 3, 4 }; |
| static double zero_1_3_of_4[] = { 0, 2, 0, 4 }; |
| /* Clearly it would be nice to draw this one as well, but it seems to trigger a bug in ghostscript. */ |
| #if BUG_FIXED_IN_GHOSTSCRIPT |
| static double zero_1_4_of_4[] = { 0, 2, 3, 0 }; |
| #endif |
| static double zero_2_3_of_4[] = { 1, 0, 0, 4 }; |
| static double zero_2_4_of_4[] = { 1, 0, 3, 0 }; |
| static double zero_3_4_of_4[] = { 1, 2, 0, 0 }; |
| static double zero_1_2_3_of_4[] = { 0, 0, 0, 4 }; |
| static double zero_1_2_4_of_4[] = { 0, 0, 3, 0 }; |
| static double zero_1_3_4_of_4[] = { 0, 2, 0, 0 }; |
| static double zero_2_3_4_of_4[] = { 1, 0, 0, 0 }; |
| |
| cairo_set_source_rgb (cr, 1, 0, 0); |
| cairo_set_line_width (cr, 2); |
| |
| draw_dash (cr, solid_line, 2); |
| draw_dash (cr, invisible_line, 2); |
| |
| cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); |
| draw_dash (cr, dotted_line, 2); |
| cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT); |
| |
| draw_dash (cr, zero_1_of_3, 3); |
| draw_dash (cr, zero_2_of_3, 3); |
| draw_dash (cr, zero_3_of_3, 3); |
| draw_dash (cr, zero_1_of_4, 4); |
| draw_dash (cr, zero_2_of_4, 4); |
| draw_dash (cr, zero_3_of_4, 4); |
| draw_dash (cr, zero_4_of_4, 4); |
| draw_dash (cr, zero_1_2_of_4, 4); |
| draw_dash (cr, zero_1_3_of_4, 4); |
| #if BUG_FIXED_IN_GHOSTSCRIPT |
| draw_dash (cr, zero_1_4_of_4, 4); |
| #endif |
| draw_dash (cr, zero_2_3_of_4, 4); |
| draw_dash (cr, zero_2_4_of_4, 4); |
| draw_dash (cr, zero_3_4_of_4, 4); |
| draw_dash (cr, zero_1_2_3_of_4, 4); |
| draw_dash (cr, zero_1_2_4_of_4, 4); |
| draw_dash (cr, zero_1_3_4_of_4, 4); |
| draw_dash (cr, zero_2_3_4_of_4, 4); |
| |
| return CAIRO_TEST_SUCCESS; |
| } |
| |
| CAIRO_TEST (dash_zero_length, |
| "Tests cairo_set_dash with zero length", |
| "dash, stroke", /* keywords */ |
| NULL, /* requirements */ |
| IMAGE_WIDTH, IMAGE_HEIGHT, |
| NULL, draw) |