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 17static const float kBlurSigmas[] = { 18 0.0, 0.3f, 0.5f, 2.0f, 32.0f, 80.0f }; 19 20const char* kTestStrings[] = { 21 "The quick`~", 22 "brown fox[]", 23 "jumped over", 24 "the lazy@#$", 25 "dog.{}!%^&", 26 "*()+=-\\'\"/", 27}; 28 29namespace skiagm { 30 31class BlurImageFilter : public GM { 32public: 33 BlurImageFilter() { 34 this->setBGColor(0xFFFFFFFF); 35 fName.printf("imageblur2"); 36 } 37 38protected: 39 virtual uint32_t onGetFlags() const SK_OVERRIDE { 40 return kSkipTiled_Flag; 41 } 42 43 virtual SkString onShortName() { 44 return fName; 45 } 46 47 virtual SkISize onISize() { 48 return SkISize::Make(WIDTH, HEIGHT); 49 } 50 51 virtual void onDraw(SkCanvas* canvas) { 52 const int sigmaCount = SK_ARRAY_COUNT(kBlurSigmas); 53 const int testStringCount = SK_ARRAY_COUNT(kTestStrings); 54 SkScalar dx = WIDTH / sigmaCount; 55 SkScalar dy = HEIGHT / sigmaCount; 56 const SkScalar textSize = 12; 57 58 for (int x = 0; x < sigmaCount; x++) { 59 SkScalar sigmaX = kBlurSigmas[x]; 60 for (int y = 0; y < sigmaCount; y++) { 61 SkScalar sigmaY = kBlurSigmas[y]; 62 63 SkPaint paint; 64 paint.setImageFilter(SkBlurImageFilter::Create(sigmaX, sigmaY))->unref(); 65 canvas->saveLayer(NULL, &paint); 66 67 SkRandom rand; 68 SkPaint textPaint; 69 textPaint.setAntiAlias(false); 70 textPaint.setColor(rand.nextBits(24) | 0xFF000000); 71 textPaint.setTextSize(textSize); 72 73 for (int i = 0; i < testStringCount; i++) { 74 canvas->drawText(kTestStrings[i], 75 strlen(kTestStrings[i]), 76 SkIntToScalar(x * dx), 77 SkIntToScalar(y * dy + textSize * i + textSize), 78 textPaint); 79 } 80 canvas->restore(); 81 } 82 } 83 } 84 85private: 86 SkString fName; 87 88 typedef GM INHERITED; 89}; 90 91////////////////////////////////////////////////////////////////////////////// 92 93static GM* MyFactory(void*) { return new BlurImageFilter; } 94static GMRegistry reg(MyFactory); 95 96} 97