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 "gm.h" 9 #include "SkCanvas.h" 10 #include "SkCullPoints.h" 11 #include "SkRandom.h" 12 13 static void test_hittest(SkCanvas* canvas, const SkPath& path) { 14 SkPaint paint; 15 SkRect r = path.getBounds(); 16 17 paint.setColor(SK_ColorRED); 18 canvas->drawPath(path, paint); 19 20 const SkScalar MARGIN = SkIntToScalar(4); 21 22 paint.setColor(0x800000FF); 23 for (SkScalar y = r.fTop + SK_ScalarHalf - MARGIN; y < r.fBottom + MARGIN; y += SK_Scalar1) { 24 for (SkScalar x = r.fLeft + SK_ScalarHalf - MARGIN; x < r.fRight + MARGIN; x += SK_Scalar1) { 25 if (path.contains(x, y)) { 26 canvas->drawPoint(x, y, paint); 27 } 28 } 29 } 30 } 31 32 class HitTestPathGM : public skiagm::GM { 33 public: 34 HitTestPathGM () {} 35 36 protected: 37 virtual SkString onShortName() { 38 return SkString("hittestpath"); 39 } 40 41 virtual SkISize onISize() { return SkISize::Make(700, 460); } 42 43 virtual void onDraw(SkCanvas* canvas) { 44 SkPath path; 45 SkRandom rand; 46 47 int scale = 300; 48 for (int i = 0; i < 4; ++i) { 49 path.lineTo(rand.nextUScalar1() * scale, rand.nextUScalar1() * scale); 50 path.quadTo(rand.nextUScalar1() * scale, rand.nextUScalar1() * scale, 51 rand.nextUScalar1() * scale, rand.nextUScalar1() * scale); 52 path.cubicTo(rand.nextUScalar1() * scale, rand.nextUScalar1() * scale, 53 rand.nextUScalar1() * scale, rand.nextUScalar1() * scale, 54 rand.nextUScalar1() * scale, rand.nextUScalar1() * scale); 55 } 56 57 path.setFillType(SkPath::kEvenOdd_FillType); 58 path.offset(SkIntToScalar(20), SkIntToScalar(20)); 59 60 test_hittest(canvas, path); 61 62 canvas->translate(SkIntToScalar(scale), 0); 63 path.setFillType(SkPath::kWinding_FillType); 64 65 test_hittest(canvas, path); 66 } 67 68 private: 69 typedef GM INHERITED; 70 }; 71 72 ////////////////////////////////////////////////////////////////////////////// 73 74 static skiagm::GM* MyFactory(void*) { return new HitTestPathGM; } 75 static skiagm::GMRegistry reg(MyFactory); 76