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      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 "Sample.h"
      9 #include "SkBlurMask.h"
     10 #include "SkCanvas.h"
     11 #include "SkEmbossMaskFilter.h"
     12 #include "SkGradientShader.h"
     13 #include "SkGraphics.h"
     14 #include "SkPath.h"
     15 #include "SkRandom.h"
     16 #include "SkRegion.h"
     17 #include "SkShader.h"
     18 #include "SkUTF.h"
     19 #include "SkColorPriv.h"
     20 #include "SkColorFilter.h"
     21 #include "SkTime.h"
     22 #include "SkTypeface.h"
     23 
     24 class EmbossView : public Sample {
     25     SkEmbossMaskFilter::Light   fLight;
     26 public:
     27     EmbossView() {
     28         fLight.fDirection[0] = SK_Scalar1;
     29         fLight.fDirection[1] = SK_Scalar1;
     30         fLight.fDirection[2] = SK_Scalar1;
     31         fLight.fAmbient = 128;
     32         fLight.fSpecular = 16*2;
     33     }
     34 
     35 protected:
     36     virtual bool onQuery(Sample::Event* evt) {
     37         if (Sample::TitleQ(*evt)) {
     38             Sample::TitleR(evt, "Emboss");
     39             return true;
     40         }
     41         return this->INHERITED::onQuery(evt);
     42     }
     43 
     44     virtual void onDrawContent(SkCanvas* canvas) {
     45         SkPaint paint;
     46 
     47         paint.setAntiAlias(true);
     48         paint.setStyle(SkPaint::kStroke_Style);
     49         paint.setStrokeWidth(SkIntToScalar(10));
     50         paint.setMaskFilter(SkEmbossMaskFilter::Make(SkBlurMask::ConvertRadiusToSigma(4), fLight));
     51         paint.setShader(SkShader::MakeColorShader(SK_ColorBLUE));
     52         paint.setDither(true);
     53 
     54         canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
     55                            SkIntToScalar(30), paint);
     56     }
     57 
     58 private:
     59 
     60     typedef Sample INHERITED;
     61 };
     62 
     63 //////////////////////////////////////////////////////////////////////////////
     64 
     65 DEF_SAMPLE( return new EmbossView(); )
     66