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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 "SampleCode.h"
      9 #include "SkView.h"
     10 #include "SkCanvas.h"
     11 #include "SkGradientShader.h"
     12 #include "SkGraphics.h"
     13 #include "SkImageDecoder.h"
     14 #include "SkPath.h"
     15 #include "SkRandom.h"
     16 #include "SkRegion.h"
     17 #include "SkShader.h"
     18 #include "SkUtils.h"
     19 #include "SkColorPriv.h"
     20 #include "SkColorFilter.h"
     21 #include "SkTime.h"
     22 #include "SkTypeface.h"
     23 #include "SkXfermode.h"
     24 
     25 #include "SkStream.h"
     26 #include "SkXMLParser.h"
     27 
     28 class PointsView : public SampleView {
     29 public:
     30     PointsView() {}
     31 
     32 protected:
     33     // overrides from SkEventSink
     34     virtual bool onQuery(SkEvent* evt) {
     35         if (SampleCode::TitleQ(*evt)) {
     36             SampleCode::TitleR(evt, "Points");
     37             return true;
     38         }
     39         return this->INHERITED::onQuery(evt);
     40     }
     41 
     42     static void fill_pts(SkPoint pts[], size_t n, SkRandom* rand) {
     43         for (size_t i = 0; i < n; i++)
     44             pts[i].set(rand->nextUScalar1() * 640, rand->nextUScalar1() * 480);
     45     }
     46 
     47     virtual void onDrawContent(SkCanvas* canvas) {
     48         canvas->translate(SK_Scalar1, SK_Scalar1);
     49 
     50         SkRandom rand;
     51         SkPaint  p0, p1, p2, p3;
     52         const size_t n = 99;
     53 
     54         p0.setColor(SK_ColorRED);
     55         p1.setColor(SK_ColorGREEN);
     56         p2.setColor(SK_ColorBLUE);
     57         p3.setColor(SK_ColorWHITE);
     58 
     59         p0.setStrokeWidth(SkIntToScalar(4));
     60         p2.setStrokeCap(SkPaint::kRound_Cap);
     61         p2.setStrokeWidth(SkIntToScalar(6));
     62 
     63         SkPoint* pts = new SkPoint[n];
     64         fill_pts(pts, n, &rand);
     65 
     66         canvas->drawPoints(SkCanvas::kPolygon_PointMode, n, pts, p0);
     67         canvas->drawPoints(SkCanvas::kLines_PointMode, n, pts, p1);
     68         canvas->drawPoints(SkCanvas::kPoints_PointMode, n, pts, p2);
     69         canvas->drawPoints(SkCanvas::kPoints_PointMode, n, pts, p3);
     70 
     71         delete[] pts;
     72     }
     73 
     74 private:
     75 
     76     typedef SampleView INHERITED;
     77 };
     78 
     79 //////////////////////////////////////////////////////////////////////////////
     80 
     81 static SkView* MyFactory() { return new PointsView; }
     82 static SkViewRegister reg(MyFactory);
     83