1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "gm.h" 9 #include "sk_tool_utils.h" 10 #include "SkSurface.h" 11 #include "SkBlurImageFilter.h" 12 13 static sk_sp<SkImage> make_image(SkCanvas* canvas) { 14 SkImageInfo info = SkImageInfo::MakeN32Premul(250, 200); 15 auto surface = sk_tool_utils::makeSurface(canvas, info); 16 SkCanvas* c = surface->getCanvas(); 17 SkPaint paint; 18 paint.setAntiAlias(true); 19 20 paint.setColor(SK_ColorBLUE); 21 c->drawRect(SkRect::MakeIWH(info.width(), info.height()), paint); 22 paint.setColor(SK_ColorGREEN); 23 c->drawCircle(125, 100, 100, paint); 24 paint.setColor(SK_ColorRED); 25 c->drawRect(SkRect::MakeIWH(80, 80), paint); 26 27 return surface->makeImageSnapshot(); 28 } 29 30 static void draw_image(SkCanvas* canvas, const sk_sp<SkImage> image, sk_sp<SkImageFilter> filter) { 31 SkAutoCanvasRestore acr(canvas, true); 32 SkPaint paint; 33 paint.setImageFilter(std::move(filter)); 34 35 canvas->translate(SkIntToScalar(30), 0); 36 canvas->clipRect(SkRect::MakeIWH(image->width(),image->height())); 37 canvas->drawImage(image, 0, 0, &paint); 38 } 39 40 namespace skiagm { 41 42 // This GM draws one rectangle, one green inscribed circle, and one red square 43 // with different blur settings. 44 class ImageBlurClampModeGM : public GM { 45 public: 46 ImageBlurClampModeGM() { 47 this->setBGColor(0xFFCCCCCC); 48 } 49 50 protected: 51 52 SkString onShortName() override { 53 return SkString("imageblurclampmode"); 54 } 55 56 SkISize onISize() override { 57 return SkISize::Make(850, 920); 58 } 59 60 bool runAsBench() const override { return true; } 61 62 void onDraw(SkCanvas* canvas) override { 63 sk_sp<SkImage> image(make_image(canvas)); 64 sk_sp<SkImageFilter> filter; 65 66 canvas->translate(0, 30); 67 // Test different kernel size, including the one to launch 2d Gaussian 68 // blur. 69 for (auto sigma: { 0.6f, 3.0f, 8.0f, 20.0f }) { 70 canvas->save(); 71 72 // x-only blur 73 filter = SkBlurImageFilter::Make(sigma, 0.0f, nullptr, nullptr, 74 SkBlurImageFilter::kClamp_TileMode); 75 draw_image(canvas, image, std::move(filter)); 76 canvas->translate(image->width() + 20, 0); 77 78 // y-only blur 79 filter = SkBlurImageFilter::Make(0.0f, sigma, nullptr, nullptr, 80 SkBlurImageFilter::kClamp_TileMode); 81 draw_image(canvas, image, std::move(filter)); 82 canvas->translate(image->width() + 20, 0); 83 84 // both directions 85 filter = SkBlurImageFilter::Make(sigma, sigma, nullptr, nullptr, 86 SkBlurImageFilter::kClamp_TileMode); 87 draw_image(canvas, image, std::move(filter)); 88 canvas->translate(image->width() + 20, 0); 89 90 canvas->restore(); 91 92 canvas->translate(0, image->height() + 20); 93 } 94 } 95 96 private: 97 typedef GM INHERITED; 98 }; 99 100 ////////////////////////////////////////////////////////////////////////////// 101 102 DEF_GM(return new ImageBlurClampModeGM;) 103 } 104