1 2 /* 3 * Copyright 2012 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 #include "SampleCode.h" 9 #include "SkBlurMaskFilter.h" 10 #include "SkColorPriv.h" 11 #include "SkCanvas.h" 12 #include "SkRandom.h" 13 14 class AnimBlurView : public SampleView { 15 public: 16 AnimBlurView() { 17 } 18 19 protected: 20 // overrides from SkEventSink 21 virtual bool onQuery(SkEvent* evt) { 22 if (SampleCode::TitleQ(*evt)) { 23 SampleCode::TitleR(evt, "AnimBlur"); 24 return true; 25 } 26 return this->INHERITED::onQuery(evt); 27 } 28 29 virtual void onDrawContent(SkCanvas* canvas) { 30 31 SkScalar blurSigma = SampleCode::GetAnimSinScalar(100 * SK_Scalar1, 32 4 * SK_Scalar1, 33 5 * SK_Scalar1); 34 35 SkScalar circleRadius = 3 * SK_Scalar1 + 36 SampleCode::GetAnimSinScalar(150 * SK_Scalar1, 37 25 * SK_Scalar1, 38 3 * SK_Scalar1); 39 40 static const SkBlurStyle gStyles[] = { 41 kNormal_SkBlurStyle, 42 kInner_SkBlurStyle, 43 kSolid_SkBlurStyle, 44 kOuter_SkBlurStyle, 45 }; 46 SkRandom random; 47 48 for (size_t i = 0; i < SK_ARRAY_COUNT(gStyles); ++i) { 49 SkMaskFilter* mf = SkBlurMaskFilter::Create( 50 gStyles[i], 51 blurSigma, 52 SkBlurMaskFilter::kHighQuality_BlurFlag); 53 SkPaint paint; 54 SkSafeUnref(paint.setMaskFilter(mf)); 55 paint.setColor(random.nextU() | 0xff000000); 56 canvas->drawCircle(200 * SK_Scalar1 + 400 * (i % 2) * SK_Scalar1, 57 200 * SK_Scalar1 + i / 2 * 400 * SK_Scalar1, 58 circleRadius, paint); 59 } 60 this->inval(NULL); 61 } 62 63 private: 64 typedef SkView INHERITED; 65 }; 66 67 ////////////////////////////////////////////////////////////////////////////// 68 69 static SkView* MyFactory() { return new AnimBlurView; } 70 static SkViewRegister reg(MyFactory); 71
