| /* |
| * Copyright © 2006 Red Hat, Inc. |
| * Copyright © 2008 Chris Wilson |
| * |
| * Permission is hereby granted, free of charge, to any person |
| * obtaining a copy of this software and associated documentation |
| * files (the "Software"), to deal in the Software without |
| * restriction, including without limitation the rights to use, copy, |
| * modify, merge, publish, distribute, sublicense, and/or sell copies |
| * of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| * Author: Carl D. Worth <cworth@cworth.org> |
| * Chris Wilson <chris@chris-wilson.co.uk> |
| * |
| * Based on the original test/rectilinear-stroke.c by Carl D. Worth. |
| */ |
| |
| #include "cairo-test.h" |
| |
| #define SIZE 50 |
| |
| static void |
| draw_dashes (cairo_t *cr) |
| { |
| const double dash_square[4] = {4, 2, 2, 2}; |
| const double dash_butt[4] = {5, 1, 3, 1}; |
| |
| cairo_save (cr); |
| |
| cairo_set_dash (cr, dash_square, 4, 0); |
| |
| cairo_set_line_width (cr, 1.0); |
| cairo_translate (cr, 1, 1); |
| |
| /* Draw everything first with square caps. */ |
| cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE); |
| |
| /* Draw horizontal and vertical segments, each in both |
| * directions. */ |
| cairo_move_to (cr, 4.5, 0.5); |
| cairo_rel_line_to (cr, 2.0, 0.0); |
| |
| cairo_move_to (cr, 10.5, 4.5); |
| cairo_rel_line_to (cr, 0.0, 2.0); |
| |
| cairo_move_to (cr, 6.5, 10.5); |
| cairo_rel_line_to (cr, -2.0, 0.0); |
| |
| cairo_move_to (cr, 0.5, 6.5); |
| cairo_rel_line_to (cr, 0.0, -2.0); |
| |
| /* Draw right angle turns in four directions. */ |
| cairo_move_to (cr, 0.5, 2.5); |
| cairo_rel_line_to (cr, 0.0, -2.0); |
| cairo_rel_line_to (cr, 2.0, 0.0); |
| |
| cairo_move_to (cr, 8.5, 0.5); |
| cairo_rel_line_to (cr, 2.0, 0.0); |
| cairo_rel_line_to (cr, 0.0, 2.0); |
| |
| cairo_move_to (cr, 10.5, 8.5); |
| cairo_rel_line_to (cr, 0.0, 2.0); |
| cairo_rel_line_to (cr, -2.0, 0.0); |
| |
| cairo_move_to (cr, 2.5, 10.5); |
| cairo_rel_line_to (cr, -2.0, 0.0); |
| cairo_rel_line_to (cr, 0.0, -2.0); |
| |
| cairo_stroke (cr); |
| |
| /* Draw a closed-path rectangle */ |
| cairo_rectangle (cr, 0.5, 12.5, 10.0, 10.0); |
| cairo_set_dash (cr, dash_square, 4, 2); |
| cairo_stroke (cr); |
| |
| cairo_translate (cr, 12, 0); |
| |
| /* Now draw the same results, but with butt caps. */ |
| cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT); |
| cairo_set_dash (cr, dash_butt, 4, 0.0); |
| |
| /* Draw horizontal and vertical segments, each in both |
| * directions. */ |
| cairo_move_to (cr, 4.0, 0.5); |
| cairo_rel_line_to (cr, 3.0, 0.0); |
| |
| cairo_move_to (cr, 10.5, 4.0); |
| cairo_rel_line_to (cr, 0.0, 3.0); |
| |
| cairo_move_to (cr, 7.0, 10.5); |
| cairo_rel_line_to (cr, -3.0, 0.0); |
| |
| cairo_move_to (cr, 0.5, 7.0); |
| cairo_rel_line_to (cr, 0.0, -3.0); |
| |
| /* Draw right angle turns in four directions. */ |
| cairo_move_to (cr, 0.5, 3.0); |
| cairo_rel_line_to (cr, 0.0, -2.5); |
| cairo_rel_line_to (cr, 2.5, 0.0); |
| |
| cairo_move_to (cr, 8.0, 0.5); |
| cairo_rel_line_to (cr, 2.5, 0.0); |
| cairo_rel_line_to (cr, 0.0, 2.5); |
| |
| cairo_move_to (cr, 10.5, 8.0); |
| cairo_rel_line_to (cr, 0.0, 2.5); |
| cairo_rel_line_to (cr, -2.5, 0.0); |
| |
| cairo_move_to (cr, 3.0, 10.5); |
| cairo_rel_line_to (cr, -2.5, 0.0); |
| cairo_rel_line_to (cr, 0.0, -2.5); |
| |
| cairo_stroke (cr); |
| |
| /* Draw a closed-path rectangle */ |
| cairo_set_dash (cr, dash_butt, 4, 2.5); |
| cairo_rectangle (cr, 0.5, 12.5, 10.0, 10.0); |
| cairo_stroke (cr); |
| |
| cairo_restore (cr); |
| } |
| |
| static cairo_test_status_t |
| draw (cairo_t *cr, int width, int height) |
| { |
| /* Paint background white, then draw in black. */ |
| cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); |
| cairo_paint (cr); |
| |
| cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); |
| draw_dashes (cr); |
| |
| cairo_save (cr); |
| cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); |
| cairo_translate (cr, 0, height); |
| cairo_scale (cr, 1, -1); |
| draw_dashes (cr); |
| cairo_restore (cr); |
| |
| cairo_save (cr); |
| cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); |
| cairo_translate (cr, width, 0); |
| cairo_scale (cr, -1, 1); |
| draw_dashes (cr); |
| cairo_restore (cr); |
| |
| cairo_save (cr); |
| cairo_set_source_rgb (cr, 0.0, 0.0, 1.0); |
| cairo_translate (cr, width, height); |
| cairo_scale (cr, -1, -1); |
| draw_dashes (cr); |
| cairo_restore (cr); |
| |
| return CAIRO_TEST_SUCCESS; |
| } |
| |
| CAIRO_TEST (rectilinear_dash, |
| "Test dashed rectilinear stroke operations (covering only whole pixels)", |
| "stroke dash", /* keywords */ |
| NULL, /* requirements */ |
| SIZE, SIZE, |
| NULL, draw) |
| |