/* * Copyright 2016 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "include/core/SkCanvas.h" #include "include/core/SkPath.h" #include "include/utils/SkRandom.h" #include "samplecode/Sample.h" class MegaStrokeView : public Sample { public: MegaStrokeView() { fClip.set(0, 0, 950, 600); fAngle = 0; fPlusMinus = 0; SkRandom rand; fMegaPath.reset(); for (int index = 0; index < 921; ++index) { for (int segs = 0; segs < 40; ++segs) { fMegaPath.lineTo(SkIntToScalar(index), SkIntToScalar(rand.nextRangeU(500, 600))); } } } protected: SkString name() override { return SkString("MegaStroke"); } bool onChar(SkUnichar uni) override { fClip.set(0, 0, 950, 600); return true; } void onDrawBackground(SkCanvas* canvas) override { } void onDrawContent(SkCanvas* canvas) override { SkPaint paint; paint.setAntiAlias(true); paint.setARGB(255,255,153,0); paint.setStyle(SkPaint::kStroke_Style); paint.setStrokeWidth(1); canvas->save(); canvas->clipRect(fClip); canvas->clear(SK_ColorWHITE); canvas->drawPath(fMegaPath, paint); canvas->restore(); SkPaint divSimPaint; divSimPaint.setColor(SK_ColorBLUE); SkScalar x = SkScalarSin(fAngle * SK_ScalarPI / 180) * 200 + 250; SkScalar y = SkScalarCos(fAngle * SK_ScalarPI / 180) * 200 + 250; if ((fPlusMinus ^= 1)) { fAngle += 5; } else { fAngle -= 5; } SkRect divSim = SkRect::MakeXYWH(x, y, 100, 100); divSim.outset(30, 30); canvas->drawRect(divSim, divSimPaint); fClip = divSim; } void onSizeChange() override { fClip.set(0, 0, 950, 600); } bool onAnimate(double /*nanos*/) override { return true; } private: SkPath fMegaPath; SkRect fClip; int fAngle; int fPlusMinus; typedef Sample INHERITED; }; ////////////////////////////////////////////////////////////////////////////// DEF_SAMPLE( return new MegaStrokeView(); )