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 24class PointsView : public SampleView { 25public: 26 PointsView() {} 27 28protected: 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 70private: 71 72 typedef SampleView INHERITED; 73}; 74 75////////////////////////////////////////////////////////////////////////////// 76 77static SkView* MyFactory() { return new PointsView; } 78static SkViewRegister reg(MyFactory); 79