1 /* 2 * Copyright 2011 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 "SkBlurImageFilter.h" 10 #include "SkRandom.h" 11 12 // TODO deprecate imageblur 13 14 #define WIDTH 500 15 #define HEIGHT 500 16 17 static const float kBlurSigmas[] = { 18 0.0, 0.3f, 0.5f, 2.0f, 32.0f, 80.0f }; 19 20 const char* kTestStrings[] = { 21 "The quick`~", 22 "brown fox[]", 23 "jumped over", 24 "the lazy@#$", 25 "dog.{}!%^&", 26 "*()+=-\\'\"/", 27 }; 28 29 namespace skiagm { 30 31 class BlurImageFilter : public GM { 32 public: 33 BlurImageFilter() { 34 this->setBGColor(0xFFFFFFFF); 35 fName.printf("imageblur2"); 36 } 37 38 protected: 39 40 SkString onShortName() override { 41 return fName; 42 } 43 44 SkISize onISize() override { 45 return SkISize::Make(WIDTH, HEIGHT); 46 } 47 48 void onDraw(SkCanvas* canvas) override { 49 const int sigmaCount = SK_ARRAY_COUNT(kBlurSigmas); 50 const int testStringCount = SK_ARRAY_COUNT(kTestStrings); 51 SkScalar dx = WIDTH / sigmaCount; 52 SkScalar dy = HEIGHT / sigmaCount; 53 const SkScalar textSize = 12; 54 55 for (int x = 0; x < sigmaCount; x++) { 56 SkScalar sigmaX = kBlurSigmas[x]; 57 for (int y = 0; y < sigmaCount; y++) { 58 SkScalar sigmaY = kBlurSigmas[y]; 59 60 SkPaint paint; 61 paint.setImageFilter(SkBlurImageFilter::Create(sigmaX, sigmaY))->unref(); 62 canvas->saveLayer(NULL, &paint); 63 64 SkRandom rand; 65 SkPaint textPaint; 66 textPaint.setAntiAlias(false); 67 textPaint.setColor(rand.nextBits(24) | 0xFF000000); 68 textPaint.setTextSize(textSize); 69 70 for (int i = 0; i < testStringCount; i++) { 71 canvas->drawText(kTestStrings[i], 72 strlen(kTestStrings[i]), 73 SkIntToScalar(x * dx), 74 SkIntToScalar(y * dy + textSize * i + textSize), 75 textPaint); 76 } 77 canvas->restore(); 78 } 79 } 80 } 81 82 private: 83 SkString fName; 84 85 typedef GM INHERITED; 86 }; 87 88 ////////////////////////////////////////////////////////////////////////////// 89 90 static GM* MyFactory(void*) { return new BlurImageFilter; } 91 static GMRegistry reg(MyFactory); 92 93 } 94