100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
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/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SampleCode.h"
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#include "SkCanvas.h"
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#include "SkPath.h"
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#include "SkRandom.h"
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class MegaStrokeView : public SampleView {
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public:
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MegaStrokeView() {
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fClip.set(0, 0, 950, 600);
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fAngle = 0;
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fPlusMinus = 0;
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SkRandom rand;
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fMegaPath.reset();
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for (int index = 0; index < 921; ++index) {
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for (int segs = 0; segs < 40; ++segs) {
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fMegaPath.lineTo(SkIntToScalar(index), SkIntToScalar(rand.nextRangeU(500, 600)));
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}
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}
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}
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protected:
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// overrides from SkEventSink
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bool onQuery(SkEvent* evt) override {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "MegaStroke");
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return true;
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}
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SkUnichar uni;
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if (SampleCode::CharQ(*evt, &uni)) {
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fClip.set(0, 0, 950, 600);
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}
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SkString str;
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evt->getType(&str);
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if (str == SkString("SampleCode_Key_Event")) {
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fClip.set(0, 0, 950, 600);
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}
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return this->INHERITED::onQuery(evt);
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}
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void onDrawBackground(SkCanvas* canvas) override {
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}
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void onDrawContent(SkCanvas* canvas) override {
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setARGB(255,255,153,0);
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setStrokeWidth(1);
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canvas->save();
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canvas->clipRect(fClip);
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canvas->clear(SK_ColorWHITE);
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canvas->drawPath(fMegaPath, paint);
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canvas->restore();
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SkPaint divSimPaint;
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divSimPaint.setColor(SK_ColorBLUE);
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SkScalar x = SkScalarSin(fAngle * SK_ScalarPI / 180) * 200 + 250;
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SkScalar y = SkScalarCos(fAngle * SK_ScalarPI / 180) * 200 + 250;
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if ((fPlusMinus ^= 1)) {
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fAngle += 5;
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} else {
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fAngle -= 5;
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}
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SkRect divSim = SkRect::MakeXYWH(x, y, 100, 100);
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divSim.outset(30, 30);
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canvas->drawRect(divSim, divSimPaint);
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fClip = divSim;
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}
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void onSizeChange() override {
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fClip.set(0, 0, 950, 600);
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}
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bool onAnimate(const SkAnimTimer& ) override {
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return true;
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}
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private:
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SkPath fMegaPath;
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SkRect fClip;
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int fAngle;
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int fPlusMinus;
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typedef SampleView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new MegaStrokeView; }
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static SkViewRegister reg(MyFactory);
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