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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
#include "SkGraphics.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkXfermode.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkParsePath.h"
#include "SkTime.h"
#include "SkTypeface.h"
#include "SkGeometry.h"
class ConcavePathView : public SampleView {
public:
ConcavePathView() {}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "ConcavePaths");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual void onDrawContent(SkCanvas* canvas) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kFill_Style);
// Concave test
if (1) {
SkPath path;
canvas->translate(0, 0);
path.moveTo(SkIntToScalar(20), SkIntToScalar(20));
path.lineTo(SkIntToScalar(80), SkIntToScalar(20));
path.lineTo(SkIntToScalar(30), SkIntToScalar(30));
path.lineTo(SkIntToScalar(20), SkIntToScalar(80));
canvas->drawPath(path, paint);
}
// Reverse concave test
if (1) {
SkPath path;
canvas->save();
canvas->translate(100, 0);
path.moveTo(SkIntToScalar(20), SkIntToScalar(20));
path.lineTo(SkIntToScalar(20), SkIntToScalar(80));
path.lineTo(SkIntToScalar(30), SkIntToScalar(30));
path.lineTo(SkIntToScalar(80), SkIntToScalar(20));
canvas->drawPath(path, paint);
canvas->restore();
}
// Bowtie (intersection)
if (1) {
SkPath path;
canvas->save();
canvas->translate(200, 0);
path.moveTo(SkIntToScalar(20), SkIntToScalar(20));
path.lineTo(SkIntToScalar(80), SkIntToScalar(80));
path.lineTo(SkIntToScalar(80), SkIntToScalar(20));
path.lineTo(SkIntToScalar(20), SkIntToScalar(80));
canvas->drawPath(path, paint);
canvas->restore();
}
// "fake" bowtie (concave, but no intersection)
if (1) {
SkPath path;
canvas->save();
canvas->translate(300, 0);
path.moveTo(SkIntToScalar(20), SkIntToScalar(20));
path.lineTo(SkIntToScalar(50), SkIntToScalar(40));
path.lineTo(SkIntToScalar(80), SkIntToScalar(20));
path.lineTo(SkIntToScalar(80), SkIntToScalar(80));
path.lineTo(SkIntToScalar(50), SkIntToScalar(60));
path.lineTo(SkIntToScalar(20), SkIntToScalar(80));
canvas->drawPath(path, paint);
canvas->restore();
}
// Fish test (intersection/concave)
if (1) {
SkPath path;
canvas->save();
canvas->translate(0, 100);
path.moveTo(SkIntToScalar(20), SkIntToScalar(20));
path.lineTo(SkIntToScalar(80), SkIntToScalar(80));
path.lineTo(SkIntToScalar(70), SkIntToScalar(50));
path.lineTo(SkIntToScalar(80), SkIntToScalar(20));
path.lineTo(SkIntToScalar(20), SkIntToScalar(80));
path.lineTo(SkIntToScalar(0), SkIntToScalar(50));
canvas->drawPath(path, paint);
canvas->restore();
}
// Collinear test
if (1) {
SkPath path;
canvas->save();
canvas->translate(100, 100);
path.moveTo(SkIntToScalar(20), SkIntToScalar(20));
path.lineTo(SkIntToScalar(50), SkIntToScalar(20));
path.lineTo(SkIntToScalar(80), SkIntToScalar(20));
path.lineTo(SkIntToScalar(50), SkIntToScalar(80));
canvas->drawPath(path, paint);
canvas->restore();
}
// Hole test
if (1) {
SkPath path;
canvas->save();
canvas->translate(200, 100);
path.moveTo(SkIntToScalar(20), SkIntToScalar(20));
path.lineTo(SkIntToScalar(80), SkIntToScalar(20));
path.lineTo(SkIntToScalar(80), SkIntToScalar(80));
path.lineTo(SkIntToScalar(20), SkIntToScalar(80));
path.moveTo(SkIntToScalar(30), SkIntToScalar(30));
path.lineTo(SkIntToScalar(30), SkIntToScalar(70));
path.lineTo(SkIntToScalar(70), SkIntToScalar(70));
path.lineTo(SkIntToScalar(70), SkIntToScalar(30));
canvas->drawPath(path, paint);
canvas->restore();
}
}
virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y,
unsigned modi) {
this->inval(nullptr);
return this->INHERITED::onFindClickHandler(x, y, modi);
}
private:
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new ConcavePathView; }
static SkViewRegister reg(MyFactory);
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