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