| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm.h" |
| #include "sk_tool_utils.h" |
| |
| #include "SkBlurMask.h" |
| #include "SkCanvas.h" |
| #include "SkMaskFilter.h" |
| #include "SkPaint.h" |
| |
| // This GM tests out the SkBlurMaskFilter's kIgnoreTransform flag. That flag causes the blur mask |
| // filter to not apply the CTM to the blur's radius. |
| class BlurIgnoreXformGM : public skiagm::GM { |
| public: |
| enum class DrawType { |
| kCircle, |
| kRect, |
| kRRect, |
| }; |
| |
| BlurIgnoreXformGM(DrawType drawType) : fDrawType(drawType) { } |
| |
| protected: |
| bool runAsBench() const override { return true; } |
| |
| SkString onShortName() override { |
| SkString name; |
| name.printf("blur_ignore_xform_%s", |
| DrawType::kCircle == fDrawType ? "circle" |
| : DrawType::kRect == fDrawType ? "rect" : "rrect"); |
| return name; |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(375, 475); |
| } |
| |
| void onOnceBeforeDraw() override { |
| for (int i = 0; i < kNumBlurs; ++i) { |
| fBlurFilters[i] = SkMaskFilter::MakeBlur( |
| kNormal_SkBlurStyle, |
| SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(20)), |
| kBlurFlags[i].fRespectCTM); |
| } |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| SkPaint paint; |
| paint.setColor(SK_ColorBLACK); |
| paint.setAntiAlias(true); |
| |
| canvas->translate(10, 25); |
| canvas->save(); |
| canvas->translate(80, 0); |
| for (size_t i = 0; i < kNumBlurs; ++i) { |
| SkAutoCanvasRestore autoRestore(canvas, true); |
| canvas->translate(SkIntToScalar(i * 150), 0); |
| for (auto scale : kMatrixScales) { |
| canvas->save(); |
| canvas->scale(scale.fScale, scale.fScale); |
| static const SkScalar kRadius = 20.0f; |
| SkScalar coord = 50.0f * 1.0f / scale.fScale; |
| SkRect rect = SkRect::MakeXYWH(coord - kRadius , coord - kRadius, |
| 2 * kRadius, 2 * kRadius); |
| SkRRect rrect = SkRRect::MakeRectXY(rect, kRadius/2.0f, kRadius/2.0f); |
| |
| paint.setMaskFilter(fBlurFilters[i]); |
| for (int j = 0; j < 2; ++j) { |
| canvas->save(); |
| canvas->translate(10 * (1 - j), 10 * (1 - j)); |
| if (DrawType::kCircle == fDrawType) { |
| canvas->drawCircle(coord, coord, kRadius, paint); |
| } else if (DrawType::kRect == fDrawType) { |
| canvas->drawRect(rect, paint); |
| } else { |
| canvas->drawRRect(rrect, paint); |
| } |
| paint.setMaskFilter(nullptr); |
| canvas->restore(); |
| } |
| canvas->restore(); |
| canvas->translate(0, SkIntToScalar(150)); |
| } |
| } |
| canvas->restore(); |
| if (kBench_Mode != this->getMode()) { |
| this->drawOverlay(canvas); |
| } |
| } |
| |
| void drawOverlay(SkCanvas* canvas) { |
| canvas->translate(10, 0); |
| SkFont font(sk_tool_utils::create_portable_typeface()); |
| canvas->save(); |
| for (int i = 0; i < kNumBlurs; ++i) { |
| canvas->drawString(kBlurFlags[i].fName, 100, 0, font, SkPaint()); |
| canvas->translate(SkIntToScalar(130), 0); |
| } |
| canvas->restore(); |
| for (auto scale : kMatrixScales) { |
| canvas->drawString(scale.fName, 0, 50, font, SkPaint()); |
| canvas->translate(0, SkIntToScalar(150)); |
| } |
| } |
| |
| private: |
| static constexpr int kNumBlurs = 2; |
| |
| static const struct BlurFlags { |
| bool fRespectCTM; |
| const char* fName; |
| } kBlurFlags[kNumBlurs]; |
| |
| static const struct MatrixScale { |
| float fScale; |
| const char* fName; |
| } kMatrixScales[3]; |
| |
| DrawType fDrawType; |
| sk_sp<SkMaskFilter> fBlurFilters[kNumBlurs]; |
| |
| typedef skiagm::GM INHERITED; |
| }; |
| |
| const BlurIgnoreXformGM::BlurFlags BlurIgnoreXformGM::kBlurFlags[] = { |
| {true, "none"}, |
| {false, "IgnoreTransform"} |
| }; |
| |
| const BlurIgnoreXformGM::MatrixScale BlurIgnoreXformGM::kMatrixScales[] = { |
| {1.0f, "Identity"}, |
| {0.5f, "Scale = 0.5"}, |
| {2.0f, "Scale = 2.0"} |
| }; |
| |
| DEF_GM(return new BlurIgnoreXformGM(BlurIgnoreXformGM::DrawType::kCircle);) |
| DEF_GM(return new BlurIgnoreXformGM(BlurIgnoreXformGM::DrawType::kRect);) |
| DEF_GM(return new BlurIgnoreXformGM(BlurIgnoreXformGM::DrawType::kRRect);) |
| |
| |
| |