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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /gfx/2d/unittest/TestCairo.cpp
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/2d/unittest/TestCairo.cpp')
-rw-r--r--gfx/2d/unittest/TestCairo.cpp99
1 files changed, 99 insertions, 0 deletions
diff --git a/gfx/2d/unittest/TestCairo.cpp b/gfx/2d/unittest/TestCairo.cpp
new file mode 100644
index 0000000000..4ed7ad4d4a
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+++ b/gfx/2d/unittest/TestCairo.cpp
@@ -0,0 +1,99 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+#include "cairo.h"
+
+#include "gtest/gtest.h"
+
+namespace mozilla {
+namespace layers {
+
+static void TryCircle(double centerX, double centerY, double radius) {
+ printf("TestCairo:TryArcs centerY %f, radius %f\n", centerY, radius);
+
+ cairo_surface_t* surf =
+ cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 8, 21);
+ ASSERT_TRUE(surf != nullptr);
+
+ cairo_t* cairo = cairo_create(surf);
+ ASSERT_TRUE(cairo != nullptr);
+
+ cairo_set_antialias(cairo, CAIRO_ANTIALIAS_NONE);
+ cairo_arc(cairo, 0.0, centerY, radius, 0.0, 6.2831853071795862);
+ cairo_fill_preserve(cairo);
+
+ cairo_surface_destroy(surf);
+ cairo_destroy(cairo);
+}
+
+TEST(Cairo, Simple)
+{
+ TryCircle(0.0, 0.0, 14.0);
+ TryCircle(0.0, 1.0, 22.4);
+ TryCircle(1.0, 0.0, 1422.4);
+ TryCircle(1.0, 1.0, 3422.4);
+ TryCircle(-10.0, 1.0, -2);
+}
+
+TEST(Cairo, Bug825721)
+{
+ // OK:
+ TryCircle(0.0, 0.0, 8761126469220696064.0);
+ TryCircle(0.0, 1.0, 8761126469220696064.0);
+
+ // OK:
+ TryCircle(1.0, 0.0, 5761126469220696064.0);
+
+ // This was the crash in 825721. Note that centerY has to be non-zero,
+ // and radius has to be not only large, but in particular range.
+ // 825721 has a band-aid fix, where the crash is inevitable, but does
+ // not fix the cause. The same code crashes in cairo standalone.
+ TryCircle(0.0, 1.0, 5761126469220696064.0);
+}
+
+TEST(Cairo, Bug1063486)
+{
+ double x1, y1, x2, y2;
+ const double epsilon = .01;
+
+ cairo_surface_t* surf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 1, 1);
+ ASSERT_TRUE(surf != nullptr);
+
+ cairo_t* cairo = cairo_create(surf);
+ ASSERT_TRUE(cairo != nullptr);
+
+ printf("Path 1\n");
+ cairo_move_to(cairo, -20, -10);
+ cairo_line_to(cairo, 20, -10);
+ cairo_line_to(cairo, 20, 10);
+ cairo_curve_to(cairo, 10, 10, -10, 10, -20, 10);
+ cairo_curve_to(cairo, -30, 10, -30, -10, -20, -10);
+
+ cairo_path_extents(cairo, &x1, &y1, &x2, &y2);
+
+ ASSERT_LT(std::abs(-27.5 - x1), epsilon); // the failing coordinate
+ ASSERT_LT(std::abs(-10 - y1), epsilon);
+ ASSERT_LT(std::abs(20 - x2), epsilon);
+ ASSERT_LT(std::abs(10 - y2), epsilon);
+
+ printf("Path 2\n");
+ cairo_new_path(cairo);
+ cairo_move_to(cairo, 10, 30);
+ cairo_line_to(cairo, 90, 30);
+ cairo_curve_to(cairo, 30, 30, 30, 30, 10, 30);
+ cairo_curve_to(cairo, 0, 30, 0, 0, 30, 5);
+
+ cairo_path_extents(cairo, &x1, &y1, &x2, &y2);
+
+ ASSERT_LT(std::abs(4.019531 - x1), epsilon); // the failing coordinate
+ ASSERT_LT(std::abs(4.437500 - y1), epsilon);
+ ASSERT_LT(std::abs(90. - x2), epsilon);
+ ASSERT_LT(std::abs(30. - y2), epsilon);
+
+ cairo_surface_destroy(surf);
+ cairo_destroy(cairo);
+}
+
+} // namespace layers
+} // namespace mozilla