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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/mac/graphics_context_canvas.h"
#include <array>
#include "base/containers/span.h"
#include "skia/ext/skia_utils_mac.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/platform/graphics/paint/paint_canvas.h"
namespace blink {
using ::testing::ElementsAreArray;
enum TestType {
kTestIdentity = 0,
kTestTranslate = 1,
kTestClip = 2,
kTestXClip = kTestTranslate | kTestClip,
};
void RunTest(TestType test) {
const unsigned kWidth = 2;
const unsigned kHeight = 2;
const unsigned kStorageSize = kWidth * kHeight;
std::array<unsigned, kStorageSize> bits = {
0xFF333333,
0xFF666666,
0xFF999999,
0xFFCCCCCC,
};
SkImageInfo info = SkImageInfo::MakeN32Premul(kWidth, kHeight);
SkBitmap bitmap;
bitmap.installPixels(info, bits.data(), info.minRowBytes());
SkiaPaintCanvas canvas(bitmap);
if (test & kTestTranslate)
canvas.translate(kWidth / 2, 0);
if (test & kTestClip) {
SkRect clip_rect = {0, kHeight / 2, kWidth, kHeight};
canvas.clipRect(clip_rect);
}
{
SkIRect clip = SkIRect::MakeWH(kWidth, kHeight);
GraphicsContextCanvas bit_locker(&canvas, clip);
CGContextRef cg_context = bit_locker.CgContext();
CGColorRef test_color = CGColorGetConstantColor(kCGColorWhite);
CGContextSetFillColorWithColor(cg_context, test_color);
CGRect cg_rect = {{0, 0}, {kWidth, kHeight}};
CGContextFillRect(cg_context, cg_rect);
}
const auto kResults = std::to_array<std::array<unsigned, kStorageSize>>({
{0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}, // identity
{0xFF333333, 0xFFFFFFFF, 0xFF999999, 0xFFFFFFFF}, // translate
{0xFF333333, 0xFF666666, 0xFFFFFFFF, 0xFFFFFFFF}, // clip
{0xFF333333, 0xFF666666, 0xFF999999, 0xFFFFFFFF}, // translate | clip
});
EXPECT_THAT(bits, ElementsAreArray(kResults[test]));
}
TEST(GraphicsContextCanvasTest, Identity) {
RunTest(kTestIdentity);
}
TEST(GraphicsContextCanvasTest, Translate) {
RunTest(kTestTranslate);
}
TEST(GraphicsContextCanvasTest, Clip) {
RunTest(kTestClip);
}
TEST(GraphicsContextCanvasTest, XClip) {
RunTest(kTestXClip);
}
} // namespace
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