56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
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#include "SampleCode.h"
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#include "SkView.h"
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#include "SkCanvas.h"
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class SpiralView : public SampleView {
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public:
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SpiralView() {
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this->setBGColor(0xFFDDDDDD);
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}
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protected:
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// overrides from SkEventSink
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virtual bool onQuery(SkEvent* evt) {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "Spiral");
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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virtual void onDrawContent(SkCanvas* canvas) {
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setStrokeWidth(SkScalarHalf(SkIntToScalar(3)));
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paint.setStyle(SkPaint::kFill_Style);
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SkRect r;
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SkScalar l,t,x,y;
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l = SampleCode::GetAnimScalar(SkIntToScalar(10),
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SkIntToScalar(400));
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t = SampleCode::GetAnimScalar(SkIntToScalar(5),
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SkIntToScalar(200));
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canvas->translate(320,240);
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for (int i = 0; i < 35; i++) {
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paint.setColor(0xFFF00FF0 - i * 0x04000000);
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SkScalar step = SK_ScalarPI / (55 - i);
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SkScalar angle = t * step;
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x = (20 + SkIntToScalar(i) * 5) * SkScalarSinCos(angle, &y);
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y *= (20 + SkIntToScalar(i) * 5);
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r.set(x, y, x + SkIntToScalar(10), y + SkIntToScalar(10));
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canvas->drawRect(r, paint);
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}
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this->inval(NULL);
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}
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private:
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typedef SampleView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new SpiralView; }
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static SkViewRegister reg(MyFactory);
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