// 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; //TODO(vmpstr): This should return true. (crbug.com/180597) EXPECT_FALSE(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, 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) { SkTileGridFactory::TileGridInfo tile_grid_info; tile_grid_info.fTileInterval.set(256, 256); tile_grid_info.fOffset.setZero(); tile_grid_info.fMargin.setEmpty(); SkTileGridFactory factory(tile_grid_info); 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.endRecording()); // Draw the picture into the analysis canvas, using the canvas as a callback // as well. skia::AnalysisCanvas canvas(256, 256); picture->draw(&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.abortDrawing()); } 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