diff options
Diffstat (limited to 'chromium/third_party/WebKit/Source/platform/graphics/GraphicsContextTest.cpp')
| -rw-r--r-- | chromium/third_party/WebKit/Source/platform/graphics/GraphicsContextTest.cpp | 1123 |
1 files changed, 1123 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/platform/graphics/GraphicsContextTest.cpp b/chromium/third_party/WebKit/Source/platform/graphics/GraphicsContextTest.cpp new file mode 100644 index 00000000000..dbf9861c786 --- /dev/null +++ b/chromium/third_party/WebKit/Source/platform/graphics/GraphicsContextTest.cpp @@ -0,0 +1,1123 @@ +/* + * Copyright (C) 2012 Google Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" + +#include "platform/graphics/GraphicsContext.h" + +#include "platform/graphics/BitmapImage.h" +#include "platform/graphics/DisplayList.h" +#include "platform/graphics/ImageBuffer.h" +#include "platform/graphics/skia/NativeImageSkia.h" +#include "third_party/skia/include/core/SkBitmap.h" +#include "third_party/skia/include/core/SkCanvas.h" +#include "third_party/skia/include/core/SkPicture.h" +#include <gtest/gtest.h> + +using namespace WebCore; + +namespace { + +#define EXPECT_EQ_RECT(a, b) \ + EXPECT_EQ(a.x(), b.x()); \ + EXPECT_EQ(a.y(), b.y()); \ + EXPECT_EQ(a.width(), b.width()); \ + EXPECT_EQ(a.height(), b.height()); + +#define EXPECT_PIXELS_MATCH(bitmap, opaqueRect) \ +{ \ + SkAutoLockPixels locker(bitmap); \ + for (int y = opaqueRect.y(); y < opaqueRect.maxY(); ++y) \ + for (int x = opaqueRect.x(); x < opaqueRect.maxX(); ++x) { \ + int alpha = *bitmap.getAddr32(x, y) >> 24; \ + EXPECT_EQ(255, alpha); \ + } \ +} + +#define EXPECT_PIXELS_MATCH_EXACT(bitmap, opaqueRect) \ +{ \ + SkAutoLockPixels locker(bitmap); \ + for (int y = 0; y < bitmap.height(); ++y) \ + for (int x = 0; x < bitmap.width(); ++x) { \ + int alpha = *bitmap.getAddr32(x, y) >> 24; \ + bool opaque = opaqueRect.contains(x, y); \ + EXPECT_EQ(opaque, alpha == 255); \ + } \ +} + +TEST(GraphicsContextTest, trackOpaqueTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(400, 400)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(10, 10, 90, 90), alpha, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(99, 13, 10, 90), opaque, CompositePlusLighter); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(99, 13, 10, 90), opaque, CompositeSourceIn); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(99, 13, 10, 90), alpha, CompositeSourceIn); + EXPECT_EQ_RECT(IntRect(10, 10, 89, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(8, 8, 3, 90), opaque, CompositeSourceOut); + EXPECT_EQ_RECT(IntRect(11, 10, 88, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(30, 30, 290, 290), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(30, 30, 290, 290), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(40, 20, 290, 50), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(30, 30, 290, 290), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(10, 10, 390, 50), opaque, CompositeSourceIn); + EXPECT_EQ_RECT(IntRect(30, 30, 290, 290), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(10, 10, 390, 50), alpha); + EXPECT_EQ_RECT(IntRect(30, 30, 290, 290), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(10, 10, 390, 50), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(30, 10, 290, 310), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, trackOpaqueClipTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(400, 400)); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.clearRect(FloatRect(10, 10, 90, 90)); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + + context.save(); + context.clip(FloatRect(0, 0, 10, 10)); + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + context.restore(); + + context.clearRect(FloatRect(10, 10, 90, 90)); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + + context.save(); + context.clip(FloatRect(20, 20, 10, 10)); + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(20, 20, 10, 10), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.clearRect(FloatRect(10, 10, 90, 90)); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + + // The intersection of the two clips becomes empty. + context.clip(FloatRect(30, 20, 10, 10)); + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + context.restore(); + + context.clearRect(FloatRect(10, 10, 90, 90)); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + + // The transform and the clip need to interact correctly (transform first) + context.save(); + context.translate(10, 10); + context.clip(FloatRect(20, 20, 10, 10)); + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(30, 30, 10, 10), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + context.restore(); + + context.clearRect(FloatRect(10, 10, 90, 90)); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + + // The transform and the clip need to interact correctly (clip first) + context.save(); + context.clip(FloatRect(20, 20, 10, 10)); + context.translate(10, 10); + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(20, 20, 10, 10), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + context.restore(); + + context.clearRect(FloatRect(10, 10, 90, 90)); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + + Path path; + path.moveTo(FloatPoint(0, 0)); + path.addLineTo(FloatPoint(100, 0)); + + // Non-rectangular clips just cause the paint to be considered non-opaque. + context.save(); + context.clipPath(path, RULE_EVENODD); + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + context.restore(); + + // Another non-rectangular clip. + context.save(); + context.clip(IntRect(30, 30, 20, 20)); + context.clipOut(IntRect(30, 30, 10, 10)); + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + context.restore(); +} + +TEST(GraphicsContextTest, trackImageMask) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(400, 400)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + // Image masks are done by drawing a bitmap into a transparency layer that uses DstIn to mask + // out a transparency layer below that is filled with the mask color. In the end this should + // not be marked opaque. + + context.setCompositeOperation(CompositeSourceOver); + context.beginTransparencyLayer(1); + context.fillRect(FloatRect(10, 10, 10, 10), opaque, CompositeSourceOver); + + context.setCompositeOperation(CompositeDestinationIn); + context.beginTransparencyLayer(1); + + OwnPtr<ImageBuffer> alphaImage = ImageBuffer::create(IntSize(100, 100)); + alphaImage->context()->fillRect(IntRect(0, 0, 100, 100), alpha); + + context.setCompositeOperation(CompositeSourceOver); + context.drawImageBuffer(alphaImage.get(), FloatRect(10, 10, 10, 10)); + + context.endLayer(); + context.endLayer(); + + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH_EXACT(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, trackImageMaskWithOpaqueRect) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(400, 400)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + // Image masks are done by drawing a bitmap into a transparency layer that uses DstIn to mask + // out a transparency layer below that is filled with the mask color. In the end this should + // not be marked opaque. + + context.setCompositeOperation(CompositeSourceOver); + context.beginTransparencyLayer(1); + context.fillRect(FloatRect(10, 10, 10, 10), opaque, CompositeSourceOver); + + context.setCompositeOperation(CompositeDestinationIn); + context.beginTransparencyLayer(1); + + OwnPtr<ImageBuffer> alphaImage = ImageBuffer::create(IntSize(100, 100)); + alphaImage->context()->fillRect(IntRect(0, 0, 100, 100), alpha); + + context.setCompositeOperation(CompositeSourceOver); + context.drawImageBuffer(alphaImage.get(), FloatRect(10, 10, 10, 10)); + + // We can't have an opaque mask actually, but we can pretend here like it would look if we did. + context.fillRect(FloatRect(12, 12, 3, 3), opaque, CompositeSourceOver); + + context.endLayer(); + context.endLayer(); + + EXPECT_EQ_RECT(IntRect(12, 12, 3, 3), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH_EXACT(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, trackOpaqueJoinTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(400, 400)); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + context.fillRect(FloatRect(20, 20, 10, 10), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(20, 20, 10, 10), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + // Doesn't join + context.fillRect(FloatRect(31, 20, 10, 10), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(20, 20, 10, 10), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + // Does join + context.fillRect(FloatRect(30, 20, 10, 10), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(20, 20, 20, 10), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + // Doesn't join + context.fillRect(FloatRect(20, 31, 20, 10), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(20, 20, 20, 10), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + // Does join + context.fillRect(FloatRect(20, 30, 20, 10), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(20, 20, 20, 20), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + // Doesn't join + context.fillRect(FloatRect(9, 20, 10, 20), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(20, 20, 20, 20), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + // Does join + context.fillRect(FloatRect(10, 20, 10, 20), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 20, 30, 20), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + // Doesn't join + context.fillRect(FloatRect(10, 9, 30, 10), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 20, 30, 20), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + // Does join + context.fillRect(FloatRect(10, 10, 30, 10), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 30, 30), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, trackOpaqueLineTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(200, 200)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + context.setShouldAntialias(false); + context.setMiterLimit(0); + context.setStrokeThickness(4); + context.setLineCap(SquareCap); + context.setStrokeStyle(SolidStroke); + context.setCompositeOperation(CompositeSourceOver); + + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.setCompositeOperation(CompositeSourceIn); + + context.save(); + context.setStrokeColor(alpha); + context.drawLine(IntPoint(0, 0), IntPoint(100, 0)); + context.restore(); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.save(); + context.setStrokeColor(opaque); + context.drawLine(IntPoint(0, 10), IntPoint(100, 10)); + context.restore(); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.save(); + context.setStrokeColor(alpha); + context.drawLine(IntPoint(0, 10), IntPoint(100, 10)); + context.restore(); + EXPECT_EQ_RECT(IntRect(10, 13, 90, 87), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.save(); + context.setStrokeColor(alpha); + context.drawLine(IntPoint(0, 11), IntPoint(100, 11)); + context.restore(); + EXPECT_EQ_RECT(IntRect(10, 14, 90, 86), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.setShouldAntialias(true); + context.setCompositeOperation(CompositeSourceOver); + + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.setCompositeOperation(CompositeSourceIn); + + context.save(); + context.setStrokeColor(alpha); + context.drawLine(IntPoint(0, 0), IntPoint(100, 0)); + context.restore(); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.setShouldAntialias(false); + context.save(); + context.setStrokeColor(opaque); + context.drawLine(IntPoint(0, 10), IntPoint(100, 10)); + context.restore(); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.setShouldAntialias(true); + context.save(); + context.setStrokeColor(opaque); + context.drawLine(IntPoint(0, 10), IntPoint(100, 10)); + context.restore(); + EXPECT_EQ_RECT(IntRect(10, 13, 90, 87), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.save(); + context.setStrokeColor(alpha); + context.drawLine(IntPoint(0, 11), IntPoint(100, 11)); + context.restore(); + EXPECT_EQ_RECT(IntRect(10, 14, 90, 86), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, trackOpaquePathTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(200, 200)); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.setShouldAntialias(false); + context.setMiterLimit(1); + context.setStrokeThickness(5); + context.setLineCap(SquareCap); + context.setStrokeStyle(SolidStroke); + context.setCompositeOperation(CompositeSourceIn); + + Path path; + + context.setFillColor(alpha); + path.moveTo(FloatPoint(0, 0)); + path.addLineTo(FloatPoint(100, 0)); + context.fillPath(path); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + path.clear(); + + context.setFillColor(opaque); + path.moveTo(FloatPoint(0, 10)); + path.addLineTo(FloatPoint(100, 13)); + context.fillPath(path); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + path.clear(); + + context.setFillColor(alpha); + path.moveTo(FloatPoint(0, 10)); + path.addLineTo(FloatPoint(100, 13)); + context.fillPath(path); + EXPECT_EQ_RECT(IntRect(10, 13, 90, 87), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + path.clear(); + + context.setFillColor(alpha); + path.moveTo(FloatPoint(0, 14)); + path.addLineTo(FloatPoint(100, 10)); + context.fillPath(path); + EXPECT_EQ_RECT(IntRect(10, 14, 90, 86), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + path.clear(); +} + +TEST(GraphicsContextTest, trackOpaqueImageTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(200, 200)); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + SkBitmap opaqueBitmap; + ASSERT_TRUE(opaqueBitmap.allocN32Pixels(10, 10, true /* opaque */)); + + for (int y = 0; y < opaqueBitmap.height(); ++y) + for (int x = 0; x < opaqueBitmap.width(); ++x) + *opaqueBitmap.getAddr32(x, y) = 0xFFFFFFFF; + RefPtr<BitmapImage> opaqueImage = BitmapImage::create(NativeImageSkia::create(opaqueBitmap)); + EXPECT_TRUE(opaqueImage->currentFrameKnownToBeOpaque()); + + SkBitmap alphaBitmap; + ASSERT_TRUE(alphaBitmap.allocN32Pixels(10, 10)); + + for (int y = 0; y < alphaBitmap.height(); ++y) + for (int x = 0; x < alphaBitmap.width(); ++x) + *alphaBitmap.getAddr32(x, y) = 0x00000000; + RefPtr<BitmapImage> alphaImage = BitmapImage::create(NativeImageSkia::create(alphaBitmap)); + EXPECT_FALSE(alphaImage->currentFrameKnownToBeOpaque()); + + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawImage(opaqueImage.get(), IntPoint(0, 0)); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + context.drawImage(alphaImage.get(), IntPoint(0, 0)); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawImage(opaqueImage.get(), IntPoint(5, 5)); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + context.drawImage(alphaImage.get(), IntPoint(5, 5)); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawImage(opaqueImage.get(), IntPoint(10, 10)); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + context.drawImage(alphaImage.get(), IntPoint(10, 10)); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawImage(alphaImage.get(), IntPoint(20, 10), CompositeSourceIn); + EXPECT_EQ_RECT(IntRect(10, 20, 90, 80), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.save(); + context.setAlphaAsFloat(0.5); + context.drawImage(opaqueImage.get(), IntPoint(25, 15), CompositeSourceIn); + context.restore(); + EXPECT_EQ_RECT(IntRect(10, 25, 90, 75), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawImage(alphaImage.get(), IntPoint(10, 20), CompositeSourceIn); + EXPECT_EQ_RECT(IntRect(20, 10, 80, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.save(); + context.setAlphaAsFloat(0.5); + context.drawImage(opaqueImage.get(), IntPoint(15, 25), CompositeSourceIn); + context.restore(); + EXPECT_EQ_RECT(IntRect(25, 10, 75, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, trackOpaqueOvalTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(200, 200)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + EXPECT_EQ_RECT(IntRect(0, 0, 0, 0), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillEllipse(FloatRect(10, 10, 90, 90)); + context.strokeEllipse(FloatRect(10, 10, 90, 90)); + EXPECT_EQ_RECT(IntRect(0, 0, 0, 0), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.setCompositeOperation(CompositeSourceIn); + + context.setShouldAntialias(false); + + context.setFillColor(opaque); + context.fillEllipse(FloatRect(10, 10, 50, 30)); + context.strokeEllipse(FloatRect(10, 10, 50, 30)); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.setFillColor(alpha); + context.fillEllipse(FloatRect(10, 10, 30, 50)); + context.strokeEllipse(FloatRect(10, 10, 30, 50)); + EXPECT_EQ_RECT(IntRect(40, 10, 60, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.setShouldAntialias(true); + + context.setFillColor(opaque); + context.fillEllipse(FloatRect(10, 10, 50, 30)); + context.strokeEllipse(FloatRect(10, 10, 50, 30)); + EXPECT_EQ_RECT(IntRect(40, 41, 60, 59), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.setFillColor(alpha); + context.fillEllipse(FloatRect(20, 10, 30, 50)); + context.strokeEllipse(FloatRect(20, 10, 30, 50)); + EXPECT_EQ_RECT(IntRect(51, 41, 49, 59), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, trackOpaqueRoundedRectTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(200, 200)); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + IntSize radii(10, 10); + + EXPECT_EQ_RECT(IntRect(0, 0, 0, 0), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRoundedRect(IntRect(10, 10, 90, 90), radii, radii, radii, radii, opaque); + EXPECT_EQ_RECT(IntRect(0, 0, 0, 0), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.setCompositeOperation(CompositeSourceIn); + context.setShouldAntialias(false); + + context.fillRoundedRect(IntRect(10, 10, 50, 30), radii, radii, radii, radii, opaque); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRoundedRect(IntRect(10, 10, 30, 50), radii, radii, radii, radii, alpha); + EXPECT_EQ_RECT(IntRect(40, 10, 60, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRoundedRect(IntRect(10, 0, 50, 30), radii, radii, radii, radii, alpha); + EXPECT_EQ_RECT(IntRect(40, 30, 60, 70), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRoundedRect(IntRect(30, 0, 70, 50), radii, radii, radii, radii, opaque); + EXPECT_EQ_RECT(IntRect(40, 30, 60, 70), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, trackOpaqueTextTest) +{ + int width = 200, height = 200; + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(width, height)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + SkRect textRect = SkRect::MakeWH(width, height); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + SkPaint opaquePaint; + opaquePaint.setColor(opaque.rgb()); + opaquePaint.setXfermodeMode(SkXfermode::kSrc_Mode); + SkPaint alphaPaint; + alphaPaint.setColor(alpha.rgb()); + alphaPaint.setXfermodeMode(SkXfermode::kSrc_Mode); + + SkPoint point = SkPoint::Make(0, 0); + + context.fillRect(FloatRect(50, 50, 50, 50), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(50, 50, 50, 50), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawPosText("A", 1, &point, textRect, opaquePaint); + EXPECT_EQ_RECT(IntRect(50, 50, 50, 50), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawPosText("A", 1, &point, textRect, alphaPaint); + EXPECT_EQ_RECT(IntRect(0, 0, 0, 0), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(50, 50, 50, 50), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(50, 50, 50, 50), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(50, 50, 50, 50), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(50, 50, 50, 50), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, trackOpaqueWritePixelsTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(200, 200)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + + SkBitmap opaqueBitmap; + ASSERT_TRUE(opaqueBitmap.allocN32Pixels(10, 10, true /* opaque */)); + for (int y = 0; y < opaqueBitmap.height(); ++y) + for (int x = 0; x < opaqueBitmap.width(); ++x) + *opaqueBitmap.getAddr32(x, y) = 0xFFFFFFFF; + + SkBitmap alphaBitmap; + ASSERT_TRUE(alphaBitmap.allocN32Pixels(10, 10)); + for (int y = 0; y < alphaBitmap.height(); ++y) + for (int x = 0; x < alphaBitmap.width(); ++x) + *alphaBitmap.getAddr32(x, y) = 0x00000000; + + SkPaint paint; + paint.setXfermodeMode(SkXfermode::kSrc_Mode); + + context.writePixels(opaqueBitmap, 50, 50); + EXPECT_EQ_RECT(IntRect(50, 50, 10, 10), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.writePixels(alphaBitmap, 10, 0); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.writePixels(alphaBitmap, 10, 1); + EXPECT_EQ_RECT(IntRect(10, 11, 90, 89), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.writePixels(alphaBitmap, 0, 10); + EXPECT_EQ_RECT(IntRect(10, 11, 90, 89), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.writePixels(alphaBitmap, 1, 10); + EXPECT_EQ_RECT(IntRect(11, 11, 89, 89), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, trackOpaqueDrawBitmapTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(200, 200)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + + SkBitmap opaqueBitmap; + ASSERT_TRUE(opaqueBitmap.allocN32Pixels(10, 10, true /* opaque */)); + for (int y = 0; y < opaqueBitmap.height(); ++y) + for (int x = 0; x < opaqueBitmap.width(); ++x) + *opaqueBitmap.getAddr32(x, y) = 0xFFFFFFFF; + + SkBitmap alphaBitmap; + ASSERT_TRUE(alphaBitmap.allocN32Pixels(10, 10)); + for (int y = 0; y < alphaBitmap.height(); ++y) + for (int x = 0; x < alphaBitmap.width(); ++x) + *alphaBitmap.getAddr32(x, y) = 0x00000000; + + SkPaint paint; + paint.setXfermodeMode(SkXfermode::kSrc_Mode); + + context.drawBitmap(opaqueBitmap, 10, 10, &paint); + EXPECT_EQ_RECT(IntRect(10, 10, 10, 10), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.fillRect(FloatRect(10, 10, 90, 90), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawBitmap(alphaBitmap, 10, 0, &paint); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawBitmap(alphaBitmap, 10, 1, &paint); + EXPECT_EQ_RECT(IntRect(10, 11, 90, 89), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawBitmap(alphaBitmap, 0, 10, &paint); + EXPECT_EQ_RECT(IntRect(10, 11, 90, 89), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawBitmap(alphaBitmap, 1, 10, &paint); + EXPECT_EQ_RECT(IntRect(11, 11, 89, 89), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, trackOpaqueDrawBitmapRectTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(200, 200)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + + SkBitmap opaqueBitmap; + ASSERT_TRUE(opaqueBitmap.allocN32Pixels(10, 10, true /* opaque */)); + for (int y = 0; y < opaqueBitmap.height(); ++y) + for (int x = 0; x < opaqueBitmap.width(); ++x) + *opaqueBitmap.getAddr32(x, y) = 0xFFFFFFFF; + + SkBitmap alphaBitmap; + ASSERT_TRUE(alphaBitmap.allocN32Pixels(10, 10)); + for (int y = 0; y < alphaBitmap.height(); ++y) + for (int x = 0; x < alphaBitmap.width(); ++x) + *alphaBitmap.getAddr32(x, y) = 0x00000000; + + SkPaint paint; + paint.setXfermodeMode(SkXfermode::kSrc_Mode); + + context.drawBitmapRect(opaqueBitmap, 0, SkRect::MakeXYWH(10, 10, 90, 90), &paint); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawBitmapRect(alphaBitmap, 0, SkRect::MakeXYWH(10, 0, 10, 10), &paint); + EXPECT_EQ_RECT(IntRect(10, 10, 90, 90), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawBitmapRect(alphaBitmap, 0, SkRect::MakeXYWH(10, 0, 10, 11), &paint); + EXPECT_EQ_RECT(IntRect(10, 11, 90, 89), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawBitmapRect(alphaBitmap, 0, SkRect::MakeXYWH(0, 10, 10, 10), &paint); + EXPECT_EQ_RECT(IntRect(10, 11, 90, 89), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.drawBitmapRect(alphaBitmap, 0, SkRect::MakeXYWH(0, 10, 11, 10), &paint); + EXPECT_EQ_RECT(IntRect(11, 11, 89, 89), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, contextTransparencyLayerTest) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(400, 400)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + context.fillRect(FloatRect(20, 20, 10, 10), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(20, 20, 10, 10), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); + + context.clearRect(FloatRect(20, 20, 10, 10)); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + + context.beginTransparencyLayer(0.5); + context.save(); + context.fillRect(FloatRect(20, 20, 10, 10), opaque, CompositeSourceOver); + context.restore(); + context.endLayer(); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + + context.clearRect(FloatRect(20, 20, 10, 10)); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + + context.beginTransparencyLayer(0.5); + context.fillRect(FloatRect(20, 20, 10, 10), opaque, CompositeSourceOver); + context.endLayer(); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, UnboundedDrawsAreClipped) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(400, 400)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + Path path; + context.setShouldAntialias(false); + context.setMiterLimit(1); + context.setStrokeThickness(5); + context.setLineCap(SquareCap); + context.setStrokeStyle(SolidStroke); + + // Make skia unable to compute fast bounds for our paths. + DashArray dashArray; + dashArray.append(1); + dashArray.append(0); + context.setLineDash(dashArray, 0); + + // Make the device opaque in 10,10 40x40. + context.fillRect(FloatRect(10, 10, 40, 40), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 40, 40), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH_EXACT(bitmap, context.opaqueRegion().asRect()); + + // Clip to the left edge of the opaque area. + context.clip(IntRect(10, 10, 10, 40)); + + // Draw a path that gets clipped. This should destroy the opaque area but only inside the clip. + context.setCompositeOperation(CompositeSourceOut); + context.setFillColor(alpha); + path.moveTo(FloatPoint(10, 10)); + path.addLineTo(FloatPoint(40, 40)); + context.strokePath(path); + + EXPECT_EQ_RECT(IntRect(20, 10, 30, 40), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH(bitmap, context.opaqueRegion().asRect()); +} + +TEST(GraphicsContextTest, PreserveOpaqueOnlyMattersForFirstLayer) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(400, 400)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + + GraphicsContext context(&canvas); + context.setTrackOpaqueRegion(true); + + Color opaque(1.0f, 0.0f, 0.0f, 1.0f); + Color alpha(0.0f, 0.0f, 0.0f, 0.0f); + + Path path; + context.setShouldAntialias(false); + context.setMiterLimit(1); + context.setStrokeThickness(5); + context.setLineCap(SquareCap); + context.setStrokeStyle(SolidStroke); + + // Make skia unable to compute fast bounds for our paths. + DashArray dashArray; + dashArray.append(1); + dashArray.append(0); + context.setLineDash(dashArray, 0); + + // Make the device opaque in 10,10 40x40. + context.fillRect(FloatRect(10, 10, 40, 40), opaque, CompositeSourceOver); + EXPECT_EQ_RECT(IntRect(10, 10, 40, 40), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH_EXACT(bitmap, context.opaqueRegion().asRect()); + + // Begin a layer that preserves opaque. + context.setCompositeOperation(CompositeSourceOver); + context.beginTransparencyLayer(0.5); + + // Begin a layer that does not preserve opaque. + context.setCompositeOperation(CompositeSourceOut); + context.beginTransparencyLayer(0.5); + + // This should not destroy the device opaqueness. + context.fillRect(FloatRect(10, 10, 40, 40), opaque, CompositeSourceOver); + + // This should not destroy the device opaqueness either. + context.setFillColor(opaque); + path.moveTo(FloatPoint(10, 10)); + path.addLineTo(FloatPoint(40, 40)); + context.strokePath(path); + + context.endLayer(); + context.endLayer(); + EXPECT_EQ_RECT(IntRect(10, 10, 40, 40), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH_EXACT(bitmap, context.opaqueRegion().asRect()); + + // Now begin a layer that does not preserve opaque and draw through it to the device. + context.setCompositeOperation(CompositeSourceOut); + context.beginTransparencyLayer(0.5); + + // This should destroy the device opaqueness. + context.fillRect(FloatRect(10, 10, 40, 40), opaque, CompositeSourceOver); + + context.endLayer(); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH_EXACT(bitmap, context.opaqueRegion().asRect()); + + // Now we draw with a path for which it cannot compute fast bounds. This should destroy the entire opaque region. + + context.setCompositeOperation(CompositeSourceOut); + context.beginTransparencyLayer(0.5); + + // This should nuke the device opaqueness. + context.setFillColor(opaque); + path.moveTo(FloatPoint(10, 10)); + path.addLineTo(FloatPoint(40, 40)); + context.strokePath(path); + + context.endLayer(); + EXPECT_EQ_RECT(IntRect(), context.opaqueRegion().asRect()); + EXPECT_PIXELS_MATCH_EXACT(bitmap, context.opaqueRegion().asRect()); +} + +#define DISPATCH1(c1, c2, op, param1) do { c1.op(param1); c2.op(param1); } while (0); +#define DISPATCH2(c1, c2, op, param1, param2) do { c1.op(param1, param2); c2.op(param1, param2); } while (0); + +TEST(GraphicsContextTest, RecordingTotalMatrix) +{ + SkBitmap bitmap; + ASSERT_TRUE(bitmap.allocN32Pixels(400, 400)); + bitmap.eraseColor(0); + SkCanvas canvas(bitmap); + GraphicsContext context(&canvas); + + SkCanvas controlCanvas(400, 400); + GraphicsContext controlContext(&controlCanvas); + + EXPECT_EQ(context.getCTM(), controlContext.getCTM()); + DISPATCH2(context, controlContext, scale, 2, 2); + EXPECT_EQ(context.getCTM(), controlContext.getCTM()); + + controlContext.save(); + context.beginRecording(FloatRect(0, 0, 200, 200)); + DISPATCH2(context, controlContext, translate, 10, 10); + EXPECT_EQ(context.getCTM(), controlContext.getCTM()); + + controlContext.save(); + context.beginRecording(FloatRect(10, 10, 100, 100)); + DISPATCH1(context, controlContext, rotate, 45); + EXPECT_EQ(context.getCTM(), controlContext.getCTM()); + + controlContext.restore(); + context.endRecording(); + EXPECT_EQ(context.getCTM(), controlContext.getCTM()); + + controlContext.restore(); + context.endRecording(); + EXPECT_EQ(context.getCTM(), controlContext.getCTM()); +} + +TEST(GraphicsContextTest, DisplayList) +{ + FloatRect rect(0, 0, 1, 1); + RefPtr<DisplayList> dl = adoptRef(new DisplayList(rect)); + + // picture() returns 0 initially + SkPicture* pic = dl->picture(); + EXPECT_FALSE(pic); + + // endRecording without a beginRecording does nothing + dl->endRecording(); + pic = dl->picture(); + EXPECT_FALSE(pic); + + // Two beginRecordings in a row generate two canvases. + // Unfortunately the new one could be allocated in the same + // spot as the old one so ref the first one to prolong its life. + IntSize size(1, 1); + SkCanvas* canvas1 = dl->beginRecording(size); + EXPECT_TRUE(canvas1); + canvas1->ref(); + SkCanvas* canvas2 = dl->beginRecording(size); + EXPECT_TRUE(canvas2); + + EXPECT_NE(canvas1, canvas2); + EXPECT_EQ(1, canvas1->getRefCnt()); + canvas1->unref(); + + EXPECT_TRUE(dl->isRecording()); + + // picture() returns 0 during recording + pic = dl->picture(); + EXPECT_FALSE(pic); + + // endRecording finally makes the picture accessible + dl->endRecording(); + pic = dl->picture(); + EXPECT_TRUE(pic); + EXPECT_EQ(1, pic->getRefCnt()); +} + +} // namespace |