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