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65040d3e3f
Add a test for the computation of approximate extents used by most backends to esimate the region affected by drawing operations. Based on: http://lists.cairographics.org/archives/cairo/2010-December/021331.html
59 lines
2.1 KiB
C
59 lines
2.1 KiB
C
/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
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/*
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* Copyright 2010 Andrea Canciani
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Author: Andrea Canciani <ranma42@gmail.com>
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*/
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#include "cairo-test.h"
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static cairo_test_status_t
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draw (cairo_t *cr, int width, int height)
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{
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cairo_set_source_rgb (cr, 1, 1, 1);
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cairo_paint (cr);
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cairo_translate (cr, 0, -25);
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cairo_move_to (cr, 50, 200);
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cairo_curve_to (cr, 50, 150, 100, 50, 150, 50);
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cairo_curve_to (cr, 200, 50, 250, 250, 200, 250);
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cairo_curve_to (cr, 150, 250, 200, 50, 50, 100);
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cairo_curve_to (cr, -100, 150, 200, 150, 200, 200);
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cairo_curve_to (cr, 200, 250, 50, 250, 50, 200);
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_fill_preserve (cr);
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cairo_set_source_rgb (cr, 1, 0, 0);
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cairo_stroke (cr);
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return CAIRO_TEST_SUCCESS;
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}
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CAIRO_TEST (bug_extents,
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"Tests a bug in the computation of approximate extents",
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"extents", /* keywords */
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NULL, /* requirements */
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250, 250,
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NULL, draw)
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