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- /*
- * 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(); )
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