зеркало из https://github.com/mozilla/gecko-dev.git
54 строки
1.4 KiB
C++
54 строки
1.4 KiB
C++
/* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/
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*/
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#include "cairo.h"
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#include "gtest/gtest.h"
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namespace mozilla {
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namespace layers {
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void TryCircle(double centerX, double centerY, double radius) {
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printf("TestCairo:TryArcs centerY %f, radius %f\n",centerY,radius);
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cairo_surface_t *surf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,8,21);
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ASSERT_TRUE(surf != nullptr);
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cairo_t *cairo = cairo_create(surf);
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ASSERT_TRUE(cairo != nullptr);
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cairo_set_antialias(cairo, CAIRO_ANTIALIAS_NONE);
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cairo_arc(cairo, 0.0, centerY, radius, 0.0, 6.2831853071795862);
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cairo_fill_preserve(cairo);
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cairo_surface_destroy(surf);
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cairo_destroy(cairo);
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}
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TEST(Cairo, Simple) {
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TryCircle(0.0, 0.0, 14.0);
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TryCircle(0.0, 1.0, 22.4);
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TryCircle(1.0, 0.0, 1422.4);
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TryCircle(1.0, 1.0, 3422.4);
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TryCircle(-10.0, 1.0, -2);
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}
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TEST(Cairo, Bug825721) {
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// OK:
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TryCircle(0.0, 0.0, 8761126469220696064.0);
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TryCircle(0.0, 1.0, 8761126469220696064.0);
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// OK:
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TryCircle(1.0, 0.0, 5761126469220696064.0);
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// This was the crash in 825721. Note that centerY has to be non-zero,
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// and radius has to be not only large, but in particular range.
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// 825721 has a band-aid fix, where the crash is inevitable, but does
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// not fix the cause. The same code crashes in cairo standalone.
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TryCircle(0.0, 1.0, 5761126469220696064.0);
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}
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}
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}
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