| |
| /* |
| * Copyright 2012 Intel Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include "gm.h" |
| #include "SkBlurDrawLooper.h" |
| #include "SkBlurMask.h" |
| #include "SkBlurMaskFilter.h" |
| #include "SkGradientShader.h" |
| #include "SkMatrix.h" |
| #include "SkRandom.h" |
| #include "SkTArray.h" |
| |
| namespace skiagm { |
| |
| class CircleGM : public GM { |
| public: |
| CircleGM() { |
| this->setBGColor(0xFF000000); |
| this->makePaints(); |
| this->makeMatrices(); |
| } |
| |
| protected: |
| virtual uint32_t onGetFlags() const SK_OVERRIDE { |
| return kSkipTiled_Flag; |
| } |
| |
| virtual SkString onShortName() SK_OVERRIDE { |
| return SkString("circles"); |
| } |
| |
| virtual SkISize onISize() SK_OVERRIDE { |
| return SkISize::Make(1200, 900); |
| } |
| |
| void makePaints() { |
| { |
| // no AA |
| SkPaint p; |
| fPaints.push_back(p); |
| } |
| |
| { |
| // AA |
| SkPaint p; |
| p.setAntiAlias(true); |
| fPaints.push_back(p); |
| } |
| |
| { |
| // AA with mask filter |
| SkPaint p; |
| p.setAntiAlias(true); |
| SkMaskFilter* mf = SkBlurMaskFilter::Create( |
| kNormal_SkBlurStyle, |
| SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)), |
| SkBlurMaskFilter::kHighQuality_BlurFlag); |
| p.setMaskFilter(mf)->unref(); |
| fPaints.push_back(p); |
| } |
| |
| { |
| // AA with radial shader |
| SkPaint p; |
| p.setAntiAlias(true); |
| SkPoint center = SkPoint::Make(SkIntToScalar(40), SkIntToScalar(40)); |
| SkColor colors[] = { SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN }; |
| SkScalar pos[] = { 0, SK_ScalarHalf, SK_Scalar1 }; |
| SkShader* s = SkGradientShader::CreateRadial(center, |
| SkIntToScalar(20), |
| colors, |
| pos, |
| SK_ARRAY_COUNT(colors), |
| SkShader::kClamp_TileMode); |
| p.setShader(s)->unref(); |
| fPaints.push_back(p); |
| } |
| |
| { |
| // AA with blur |
| SkPaint p; |
| p.setAntiAlias(true); |
| SkBlurDrawLooper* shadowLooper = |
| SkBlurDrawLooper::Create(SK_ColorBLUE, |
| SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(10)), |
| SkIntToScalar(5), SkIntToScalar(10), |
| SkBlurDrawLooper::kIgnoreTransform_BlurFlag | |
| SkBlurDrawLooper::kOverrideColor_BlurFlag | |
| SkBlurDrawLooper::kHighQuality_BlurFlag); |
| SkAutoUnref aurL0(shadowLooper); |
| p.setLooper(shadowLooper); |
| fPaints.push_back(p); |
| } |
| |
| { |
| // AA with stroke style |
| SkPaint p; |
| p.setAntiAlias(true); |
| p.setStyle(SkPaint::kStroke_Style); |
| p.setStrokeWidth(SkIntToScalar(3)); |
| fPaints.push_back(p); |
| } |
| |
| { |
| // AA with stroke style, width = 0 |
| SkPaint p; |
| p.setAntiAlias(true); |
| p.setStyle(SkPaint::kStroke_Style); |
| fPaints.push_back(p); |
| } |
| |
| { |
| // AA with stroke and fill style |
| SkPaint p; |
| p.setAntiAlias(true); |
| p.setStyle(SkPaint::kStrokeAndFill_Style); |
| p.setStrokeWidth(SkIntToScalar(2)); |
| fPaints.push_back(p); |
| } |
| } |
| |
| void makeMatrices() { |
| { |
| SkMatrix m; |
| m.setScale(SkIntToScalar(2), SkIntToScalar(3)); |
| fMatrices.push_back(m); |
| } |
| |
| { |
| SkMatrix m; |
| m.setScale(SkIntToScalar(2), SkIntToScalar(2)); |
| fMatrices.push_back(m); |
| } |
| |
| { |
| SkMatrix m; |
| m.setSkew(SkIntToScalar(2), SkIntToScalar(3)); |
| fMatrices.push_back(m); |
| } |
| |
| { |
| SkMatrix m; |
| m.setSkew(SkIntToScalar(2), SkIntToScalar(2)); |
| fMatrices.push_back(m); |
| } |
| |
| { |
| SkMatrix m; |
| m.setRotate(SkIntToScalar(30)); |
| fMatrices.push_back(m); |
| } |
| } |
| |
| virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| // Draw a giant AA circle as the background. |
| SkISize size = this->getISize(); |
| SkScalar giantRadius = SkTMin(SkIntToScalar(size.fWidth), |
| SkIntToScalar(size.fHeight)) / 2.f; |
| SkPoint giantCenter = SkPoint::Make(SkIntToScalar(size.fWidth/2), |
| SkIntToScalar(size.fHeight/2)); |
| SkPaint giantPaint; |
| giantPaint.setAntiAlias(true); |
| giantPaint.setColor(0x80808080); |
| canvas->drawCircle(giantCenter.fX, giantCenter.fY, giantRadius, giantPaint); |
| |
| SkRandom rand; |
| canvas->translate(20 * SK_Scalar1, 20 * SK_Scalar1); |
| int i; |
| for (i = 0; i < fPaints.count(); ++i) { |
| canvas->save(); |
| // position the path, and make it at off-integer coords. |
| canvas->translate(SK_Scalar1 * 200 * (i % 5) + SK_Scalar1 / 4, |
| SK_Scalar1 * 200 * (i / 5) + 3 * SK_Scalar1 / 4); |
| SkColor color = rand.nextU(); |
| color |= 0xff000000; |
| fPaints[i].setColor(color); |
| |
| canvas->drawCircle(SkIntToScalar(40), SkIntToScalar(40), |
| SkIntToScalar(20), |
| fPaints[i]); |
| canvas->restore(); |
| } |
| |
| for (int j = 0; j < fMatrices.count(); ++j, ++i) { |
| canvas->save(); |
| |
| canvas->translate(SK_Scalar1 * 200 * (i % 5) + SK_Scalar1 / 4, |
| SK_Scalar1 * 200 * (i / 5) + 3 * SK_Scalar1 / 4); |
| |
| canvas->concat(fMatrices[j]); |
| |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| |
| SkColor color = rand.nextU(); |
| color |= 0xff000000; |
| paint.setColor(color); |
| |
| canvas->drawCircle(SkIntToScalar(40), SkIntToScalar(40), |
| SkIntToScalar(20), |
| paint); |
| |
| canvas->restore(); |
| } |
| } |
| |
| private: |
| typedef GM INHERITED; |
| SkTArray<SkPaint> fPaints; |
| SkTArray<SkMatrix> fMatrices; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static GM* MyFactory(void*) { return new CircleGM; } |
| static GMRegistry reg(MyFactory); |
| |
| } |