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      1 
      2 /*
      3  * Copyright 2011 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 "SkView.h"
     10 #include "SkCanvas.h"
     11 #include "SkCornerPathEffect.h"
     12 #include "SkCullPoints.h"
     13 #include "SkGradientShader.h"
     14 #include "SkPath.h"
     15 #include "SkRegion.h"
     16 #include "SkShader.h"
     17 #include "SkUtils.h"
     18 
     19 class FillTypeView : public SampleView {
     20     SkPath fPath;
     21 public:
     22     FillTypeView() {
     23         const SkScalar radius = SkIntToScalar(45);
     24         fPath.addCircle(SkIntToScalar(50), SkIntToScalar(50), radius);
     25         fPath.addCircle(SkIntToScalar(100), SkIntToScalar(100), radius);
     26 
     27         this->setBGColor(0xFFDDDDDD);
     28     }
     29 
     30 protected:
     31     // overrides from SkEventSink
     32     virtual bool onQuery(SkEvent* evt) {
     33         if (SampleCode::TitleQ(*evt)) {
     34             SampleCode::TitleR(evt, "FillType");
     35             return true;
     36         }
     37         return this->INHERITED::onQuery(evt);
     38     }
     39 
     40     void showPath(SkCanvas* canvas, int x, int y, SkPath::FillType ft,
     41                   SkScalar scale, const SkPaint& paint) {
     42 
     43         const SkRect r = { 0, 0, SkIntToScalar(150), SkIntToScalar(150) };
     44 
     45         canvas->save();
     46         canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
     47         canvas->clipRect(r);
     48         canvas->drawColor(SK_ColorWHITE);
     49         fPath.setFillType(ft);
     50         canvas->translate(r.centerX(), r.centerY());
     51         canvas->scale(scale, scale);
     52         canvas->translate(-r.centerX(), -r.centerY());
     53         canvas->drawPath(fPath, paint);
     54         canvas->restore();
     55     }
     56 
     57     void showFour(SkCanvas* canvas, SkScalar scale, const SkPaint& paint) {
     58         showPath(canvas,   0,   0, SkPath::kWinding_FillType,
     59                  scale, paint);
     60         showPath(canvas, 200,   0, SkPath::kEvenOdd_FillType,
     61                  scale, paint);
     62         showPath(canvas,  00, 200, SkPath::kInverseWinding_FillType,
     63                  scale, paint);
     64         showPath(canvas, 200, 200, SkPath::kInverseEvenOdd_FillType,
     65                  scale, paint);
     66     }
     67 
     68     virtual void onDrawContent(SkCanvas* canvas) {
     69         canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
     70 
     71         SkPaint paint;
     72         const SkScalar scale = SkIntToScalar(5)/4;
     73 
     74         paint.setAntiAlias(false);
     75         paint.setColor(0x8000FF00);
     76 
     77         showFour(canvas, SK_Scalar1, paint);
     78         canvas->translate(SkIntToScalar(450), 0);
     79         showFour(canvas, scale, paint);
     80 
     81         paint.setAntiAlias(true);
     82 
     83         canvas->translate(SkIntToScalar(-450), SkIntToScalar(450));
     84         showFour(canvas, SK_Scalar1, paint);
     85         canvas->translate(SkIntToScalar(450), 0);
     86         showFour(canvas, scale, paint);
     87     }
     88 
     89 private:
     90     typedef SampleView INHERITED;
     91 };
     92 
     93 //////////////////////////////////////////////////////////////////////////////
     94 
     95 static SkView* MyFactory() { return new FillTypeView; }
     96 static SkViewRegister reg(MyFactory);
     97