caryclark | 70e6d60 | 2016-01-30 10:11:21 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 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 "SkCanvas.h" |
| 10 | #include "SkPath.h" |
| 11 | #include "SkRandom.h" |
| 12 | |
| 13 | class MegaStrokeView : public SampleView { |
| 14 | public: |
| 15 | MegaStrokeView() { |
| 16 | fClip.set(0, 0, 950, 600); |
| 17 | fAngle = 0; |
| 18 | fPlusMinus = 0; |
| 19 | SkRandom rand; |
| 20 | fMegaPath.reset(); |
| 21 | for (int index = 0; index < 921; ++index) { |
| 22 | for (int segs = 0; segs < 40; ++segs) { |
| 23 | fMegaPath.lineTo(SkIntToScalar(index), SkIntToScalar(rand.nextRangeU(500, 600))); |
| 24 | } |
| 25 | } |
| 26 | } |
| 27 | |
| 28 | protected: |
| 29 | // overrides from SkEventSink |
| 30 | bool onQuery(SkEvent* evt) override { |
| 31 | if (SampleCode::TitleQ(*evt)) { |
| 32 | SampleCode::TitleR(evt, "MegaStroke"); |
| 33 | return true; |
| 34 | } |
| 35 | |
| 36 | SkUnichar uni; |
| 37 | if (SampleCode::CharQ(*evt, &uni)) { |
| 38 | fClip.set(0, 0, 950, 600); |
| 39 | } |
Brian Osman | 8ceee43 | 2017-12-01 10:52:28 -0500 | [diff] [blame] | 40 | if (evt->isType("SampleCode_Key_Event")) { |
caryclark | 70e6d60 | 2016-01-30 10:11:21 -0800 | [diff] [blame] | 41 | fClip.set(0, 0, 950, 600); |
| 42 | } |
| 43 | return this->INHERITED::onQuery(evt); |
| 44 | } |
| 45 | |
| 46 | void onDrawBackground(SkCanvas* canvas) override { |
| 47 | } |
| 48 | |
| 49 | void onDrawContent(SkCanvas* canvas) override { |
| 50 | SkPaint paint; |
| 51 | paint.setAntiAlias(true); |
| 52 | paint.setARGB(255,255,153,0); |
| 53 | paint.setStyle(SkPaint::kStroke_Style); |
| 54 | paint.setStrokeWidth(1); |
| 55 | |
| 56 | canvas->save(); |
| 57 | canvas->clipRect(fClip); |
| 58 | canvas->clear(SK_ColorWHITE); |
| 59 | canvas->drawPath(fMegaPath, paint); |
| 60 | canvas->restore(); |
| 61 | |
| 62 | SkPaint divSimPaint; |
| 63 | divSimPaint.setColor(SK_ColorBLUE); |
| 64 | SkScalar x = SkScalarSin(fAngle * SK_ScalarPI / 180) * 200 + 250; |
| 65 | SkScalar y = SkScalarCos(fAngle * SK_ScalarPI / 180) * 200 + 250; |
| 66 | |
| 67 | if ((fPlusMinus ^= 1)) { |
| 68 | fAngle += 5; |
| 69 | } else { |
| 70 | fAngle -= 5; |
| 71 | } |
| 72 | SkRect divSim = SkRect::MakeXYWH(x, y, 100, 100); |
| 73 | divSim.outset(30, 30); |
| 74 | canvas->drawRect(divSim, divSimPaint); |
| 75 | fClip = divSim; |
| 76 | } |
| 77 | |
| 78 | void onSizeChange() override { |
| 79 | fClip.set(0, 0, 950, 600); |
| 80 | } |
| 81 | |
| 82 | bool onAnimate(const SkAnimTimer& ) override { |
| 83 | return true; |
| 84 | } |
| 85 | |
| 86 | private: |
| 87 | SkPath fMegaPath; |
| 88 | SkRect fClip; |
| 89 | int fAngle; |
| 90 | int fPlusMinus; |
| 91 | typedef SampleView INHERITED; |
| 92 | }; |
| 93 | |
| 94 | ////////////////////////////////////////////////////////////////////////////// |
| 95 | |
| 96 | static SkView* MyFactory() { return new MegaStrokeView; } |
| 97 | static SkViewRegister reg(MyFactory); |