diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/rectilinear-dash-scale.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/rectilinear-dash-scale.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/rectilinear-dash-scale.c b/libs/cairo-1.16.0/test/rectilinear-dash-scale.c new file mode 100644 index 0000000..34f3345 --- /dev/null +++ b/libs/cairo-1.16.0/test/rectilinear-dash-scale.c @@ -0,0 +1,196 @@ +/* + * 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 +dashes (cairo_t *cr) +{ + /* 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, SIZE); + 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, SIZE, 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, SIZE, SIZE); + cairo_scale (cr, -1, -1); + draw_dashes (cr); + cairo_restore (cr); + + return CAIRO_TEST_SUCCESS; +} + +static cairo_test_status_t +aligned (cairo_t *cr, int width, int height) +{ + cairo_scale (cr, 4, 2); + return dashes(cr); +} + +static cairo_test_status_t +unaligned (cairo_t *cr, int width, int height) +{ + cairo_scale (cr, 3.9, 1.9); + return dashes(cr); +} + +CAIRO_TEST (rectilinear_dash_scale, + "Test dashed rectilinear stroke operations (covering only whole pixels) after scaling", + "stroke, dash", /* keywords */ + NULL, /* requirements */ + 4*SIZE, 2*SIZE, + NULL, aligned) + +CAIRO_TEST (rectilinear_dash_scale_unaligned, + "Test dashed rectilinear stroke operations (covering partial pixels) after scaling", + "stroke, dash", /* keywords */ + NULL, /* requirements */ + 4*SIZE, 2*SIZE, + NULL, unaligned) |