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/*
* Copyright © 2019 Uli Schlachter
*
* 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.
*/
#include "cairo-test.h"
/* This is basically gears.shape.arrow */
static void
shape (cairo_t *cr, double width, double height)
{
double shaft_length = height / 2;
double shaft_width = width / 2;
double head_width = width;
double head_length = height - shaft_length;
cairo_move_to (cr, width / 2, 0);
cairo_rel_line_to (cr, head_width / 2, head_length);
cairo_rel_line_to (cr, -(head_width - shaft_width) / 2, 0);
cairo_rel_line_to (cr, 0, shaft_length);
cairo_rel_line_to (cr, -shaft_width, 0);
cairo_rel_line_to (cr, 0, -shaft_length);
cairo_rel_line_to (cr, -(head_width - shaft_width) / 2, 0);
cairo_close_path (cr);
}
/* This is basically the drawing routine of wibox.container.background */
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
double bw = 1.5;
cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR_ALPHA);
/* Draw background */
cairo_set_source_rgb (cr, 0, 0, 1);
cairo_paint (cr);
/* Create shape */
cairo_translate (cr, bw, bw);
shape (cr, width - 2 * bw, height - 2 * bw);
cairo_translate (cr, -bw, -bw);
/* Now do the border */
cairo_push_group_with_content (cr, CAIRO_CONTENT_ALPHA);
/* Mark everything as "is border" */
cairo_set_source_rgba (cr, 0, 0, 0, 1);
cairo_paint (cr);
/* Remove inside of the shape */
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba (cr, 0, 0, 0, 0);
cairo_fill_preserve (cr);
cairo_pattern_t *mask = cairo_pop_group (cr);
/* Now actually draw the border via the mask */
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_mask (cr, mask);
cairo_pattern_destroy (mask);
/* We now have the right content in a temporary surface. Copy it to the
* target surface. Needs another mask.
*/
cairo_push_group_with_content (cr, CAIRO_CONTENT_ALPHA);
cairo_set_line_width (cr, 2 * bw);
cairo_set_source_rgba (cr, 0, 0, 0, 1);
cairo_stroke_preserve (cr);
cairo_fill (cr);
mask = cairo_pop_group (cr);
cairo_pop_group_to_source (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_mask (cr, mask);
cairo_pattern_destroy (mask);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (bug_361,
"Bug 361 (Problem with SVG backend and masks)",
"mask, operator", /* keywords */
NULL, /* requirements */
100, 100,
NULL, draw)
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