blob: 5436b8130c96733c92d91545ac9a13f9d691473f [file] [log] [blame]
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/compiler_specific.h"
#include "skia/ext/analysis_canvas.h"
#include "skia/ext/refptr.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkPicture.h"
#include "third_party/skia/include/core/SkPictureRecorder.h"
#include "third_party/skia/include/core/SkShader.h"
#include "third_party/skia/include/effects/SkOffsetImageFilter.h"
namespace {
void SolidColorFill(skia::AnalysisCanvas& canvas) {
canvas.clear(SkColorSetARGB(255, 255, 255, 255));
}
void TransparentFill(skia::AnalysisCanvas& canvas) {
canvas.clear(SkColorSetARGB(0, 0, 0, 0));
}
} // namespace
namespace skia {
TEST(AnalysisCanvasTest, EmptyCanvas) {
skia::AnalysisCanvas canvas(255, 255);
SkColor color;
EXPECT_TRUE(canvas.GetColorIfSolid(&color));
EXPECT_EQ(color, SkColorSetARGB(0, 0, 0, 0));
}
TEST(AnalysisCanvasTest, ClearCanvas) {
skia::AnalysisCanvas canvas(255, 255);
// Transparent color
SkColor color = SkColorSetARGB(0, 12, 34, 56);
canvas.clear(color);
SkColor outputColor;
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_EQ(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
// Solid color
color = SkColorSetARGB(255, 65, 43, 21);
canvas.clear(color);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_NE(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
EXPECT_EQ(outputColor, color);
// Translucent color
color = SkColorSetARGB(128, 11, 22, 33);
canvas.clear(color);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
// Test helper methods
SolidColorFill(canvas);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_NE(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
TransparentFill(canvas);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_EQ(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
}
TEST(AnalysisCanvasTest, ComplexActions) {
skia::AnalysisCanvas canvas(255, 255);
// Draw paint test.
SkColor color = SkColorSetARGB(255, 11, 22, 33);
SkPaint paint;
paint.setColor(color);
canvas.drawPaint(paint);
SkColor outputColor;
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
// Draw points test.
SkPoint points[4] = {
SkPoint::Make(0, 0),
SkPoint::Make(255, 0),
SkPoint::Make(255, 255),
SkPoint::Make(0, 255)
};
SolidColorFill(canvas);
canvas.drawPoints(SkCanvas::kLines_PointMode, 4, points, paint);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
// Draw oval test.
SolidColorFill(canvas);
canvas.drawOval(SkRect::MakeWH(255, 255), paint);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
// Draw bitmap test.
SolidColorFill(canvas);
SkBitmap secondBitmap;
secondBitmap.allocN32Pixels(255, 255);
canvas.drawBitmap(secondBitmap, 0, 0);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
}
TEST(AnalysisCanvasTest, SimpleDrawRect) {
skia::AnalysisCanvas canvas(255, 255);
SkColor color = SkColorSetARGB(255, 11, 22, 33);
SkPaint paint;
paint.setColor(color);
canvas.clipRect(SkRect::MakeWH(255, 255));
canvas.drawRect(SkRect::MakeWH(255, 255), paint);
SkColor outputColor;
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_NE(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
EXPECT_EQ(color, outputColor);
color = SkColorSetARGB(255, 22, 33, 44);
paint.setColor(color);
canvas.translate(-128, -128);
canvas.drawRect(SkRect::MakeWH(382, 382), paint);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
color = SkColorSetARGB(255, 33, 44, 55);
paint.setColor(color);
canvas.drawRect(SkRect::MakeWH(383, 383), paint);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_NE(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
EXPECT_EQ(color, outputColor);
color = SkColorSetARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawRect(SkRect::MakeWH(383, 383), paint);
// This test relies on canvas treating a paint with 0-color as a no-op
// thus not changing its "is_solid" status.
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_NE(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
EXPECT_EQ(outputColor, SkColorSetARGB(255, 33, 44, 55));
color = SkColorSetARGB(128, 128, 128, 128);
paint.setColor(color);
canvas.drawRect(SkRect::MakeWH(383, 383), paint);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
paint.setXfermodeMode(SkXfermode::kClear_Mode);
canvas.drawRect(SkRect::MakeWH(382, 382), paint);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
canvas.drawRect(SkRect::MakeWH(383, 383), paint);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_EQ(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
canvas.translate(128, 128);
color = SkColorSetARGB(255, 11, 22, 33);
paint.setColor(color);
paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
canvas.drawRect(SkRect::MakeWH(255, 255), paint);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_NE(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
EXPECT_EQ(color, outputColor);
canvas.rotate(50);
canvas.drawRect(SkRect::MakeWH(255, 255), paint);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
}
TEST(AnalysisCanvasTest, FilterPaint) {
skia::AnalysisCanvas canvas(255, 255);
SkPaint paint;
skia::RefPtr<SkImageFilter> filter =
skia::AdoptRef(SkOffsetImageFilter::Create(10, 10));
paint.setImageFilter(filter.get());
canvas.drawRect(SkRect::MakeWH(255, 255), paint);
SkColor outputColor;
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
}
TEST(AnalysisCanvasTest, ClipPath) {
skia::AnalysisCanvas canvas(255, 255);
// Skia will look for paths that are actually rects and treat
// them as such. We add a divot to the following path to prevent
// this optimization and truly test clipPath's behavior.
SkPath path;
path.moveTo(0, 0);
path.lineTo(128, 50);
path.lineTo(255, 0);
path.lineTo(255, 255);
path.lineTo(0, 255);
SkColor outputColor;
SolidColorFill(canvas);
canvas.clipPath(path);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
canvas.save();
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
canvas.clipPath(path);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
canvas.restore();
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
SolidColorFill(canvas);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
}
TEST(AnalysisCanvasTest, SaveLayerWithXfermode) {
skia::AnalysisCanvas canvas(255, 255);
SkRect bounds = SkRect::MakeWH(255, 255);
SkColor outputColor;
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_EQ(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
SkPaint paint;
// Note: nothing is draw to the the save layer, but solid color
// and transparency are handled conservatively in case the layer's
// SkPaint draws something. For example, there could be an
// SkPictureImageFilter. If someday analysis_canvas starts doing
// a deeper analysis of the SkPaint, this test may need to be
// redesigned.
TransparentFill(canvas);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_EQ(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
paint.setXfermodeMode(SkXfermode::kSrc_Mode);
canvas.saveLayer(&bounds, &paint);
canvas.restore();
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
TransparentFill(canvas);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_EQ(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
canvas.saveLayer(&bounds, &paint);
canvas.restore();
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
// Layer with dst xfermode is a no-op, so this is the only case
// where solid color is unaffected by the layer.
TransparentFill(canvas);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_EQ(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
paint.setXfermodeMode(SkXfermode::kDst_Mode);
canvas.saveLayer(&bounds, &paint);
canvas.restore();
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_EQ(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
}
TEST(AnalysisCanvasTest, SaveLayerRestore) {
skia::AnalysisCanvas canvas(255, 255);
SkColor outputColor;
SolidColorFill(canvas);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
SkRect bounds = SkRect::MakeWH(255, 255);
SkPaint paint;
paint.setColor(SkColorSetARGB(255, 255, 255, 255));
paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
// This should force non-transparency
canvas.saveLayer(&bounds, &paint);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_NE(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
TransparentFill(canvas);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
SolidColorFill(canvas);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_NE(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
paint.setXfermodeMode(SkXfermode::kDst_Mode);
// This should force non-solid color
canvas.saveLayer(&bounds, &paint);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
TransparentFill(canvas);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
SolidColorFill(canvas);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
canvas.restore();
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
TransparentFill(canvas);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
SolidColorFill(canvas);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_NE(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
canvas.restore();
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_NE(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
TransparentFill(canvas);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_EQ(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
SolidColorFill(canvas);
EXPECT_TRUE(canvas.GetColorIfSolid(&outputColor));
EXPECT_NE(static_cast<SkColor>(SK_ColorTRANSPARENT), outputColor);
}
TEST(AnalysisCanvasTest, EarlyOutNotSolid) {
SkRTreeFactory factory;
SkPictureRecorder recorder;
// Create a picture with 3 commands, last of which is non-solid.
skia::RefPtr<SkCanvas> record_canvas =
skia::SharePtr(recorder.beginRecording(256, 256, &factory));
std::string text = "text";
SkPoint point = SkPoint::Make(SkIntToScalar(25), SkIntToScalar(25));
SkPaint paint;
paint.setColor(SkColorSetARGB(255, 255, 255, 255));
paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
record_canvas->drawRect(SkRect::MakeWH(256, 256), paint);
record_canvas->drawRect(SkRect::MakeWH(256, 256), paint);
record_canvas->drawText(
text.c_str(), text.length(), point.fX, point.fY, paint);
skia::RefPtr<SkPicture> picture =
skia::AdoptRef(recorder.endRecordingAsPicture());
// Draw the picture into the analysis canvas, using the canvas as a callback
// as well.
skia::AnalysisCanvas canvas(256, 256);
picture->playback(&canvas, &canvas);
// Ensure that canvas is not solid.
SkColor output_color;
EXPECT_FALSE(canvas.GetColorIfSolid(&output_color));
// Verify that we aborted drawing.
EXPECT_TRUE(canvas.abort());
}
TEST(AnalysisCanvasTest, ClipComplexRegion) {
skia::AnalysisCanvas canvas(255, 255);
SkPath path;
path.moveTo(0, 0);
path.lineTo(128, 50);
path.lineTo(255, 0);
path.lineTo(255, 255);
path.lineTo(0, 255);
SkIRect pathBounds = path.getBounds().round();
SkRegion region;
region.setPath(path, SkRegion(pathBounds));
SkColor outputColor;
SolidColorFill(canvas);
canvas.clipRegion(region);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
canvas.save();
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
canvas.clipRegion(region);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
canvas.restore();
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
SolidColorFill(canvas);
EXPECT_FALSE(canvas.GetColorIfSolid(&outputColor));
}
} // namespace skia