| /* |
| * 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(); ) |