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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 "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkComposeShader.h"
#include "Sk1DPathEffect.h"
#include "SkCornerPathEffect.h"
#include "SkPathMeasure.h"
#include "SkRandom.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkLayerRasterizer.h"
#include "SkParsePath.h"
static void testparse() {
SkRect r;
r.set(0, 0, SkFloatToScalar(10), SkFloatToScalar(10.5f));
SkPath p, p2;
SkString str, str2;
p.addRect(r);
SkParsePath::ToSVGString(p, &str);
SkParsePath::FromSVGString(str.c_str(), &p2);
SkParsePath::ToSVGString(p2, &str2);
}
class ArcsView : public SampleView {
public:
ArcsView() {
testparse();
fSweep = SkIntToScalar(100);
this->setBGColor(0xFFDDDDDD);
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Arcs");
return true;
}
return this->INHERITED::onQuery(evt);
}
static void drawRectWithLines(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
canvas->drawRect(r, p);
canvas->drawLine(r.fLeft, r.fTop, r.fRight, r.fBottom, p);
canvas->drawLine(r.fLeft, r.fBottom, r.fRight, r.fTop, p);
canvas->drawLine(r.fLeft, r.centerY(), r.fRight, r.centerY(), p);
canvas->drawLine(r.centerX(), r.fTop, r.centerX(), r.fBottom, p);
}
static void draw_label(SkCanvas* canvas, const SkRect& rect,
int start, int sweep) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextAlign(SkPaint::kCenter_Align);
SkString str;
str.appendS32(start);
str.append(", ");
str.appendS32(sweep);
canvas->drawText(str.c_str(), str.size(), rect.centerX(),
rect.fBottom + paint.getTextSize() * 5/4, paint);
}
static void drawArcs(SkCanvas* canvas) {
SkPaint paint;
SkRect r;
SkScalar w = SkIntToScalar(75);
SkScalar h = SkIntToScalar(50);
r.set(0, 0, w, h);
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
canvas->save();
canvas->translate(SkIntToScalar(10), SkIntToScalar(300));
paint.setStrokeWidth(SkIntToScalar(1));
static const int gAngles[] = {
0, 360,
0, 45,
0, -45,
720, 135,
-90, 269,
-90, 270,
-90, 271,
-180, -270,
225, 90
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gAngles); i += 2) {
paint.setColor(SK_ColorBLACK);
drawRectWithLines(canvas, r, paint);
paint.setColor(SK_ColorRED);
canvas->drawArc(r, SkIntToScalar(gAngles[i]),
SkIntToScalar(gAngles[i+1]), false, paint);
draw_label(canvas, r, gAngles[i], gAngles[i+1]);
canvas->translate(w * 8 / 7, 0);
}
canvas->restore();
}
virtual void onDrawContent(SkCanvas* canvas) {
fSweep = SampleCode::GetAnimScalar(SkIntToScalar(360)/24,
SkIntToScalar(360));
// fSweep = SkFloatToScalar(359.99f);
SkRect r;
SkPaint paint;
paint.setAntiAlias(true);
paint.setStrokeWidth(SkIntToScalar(2));
paint.setStyle(SkPaint::kStroke_Style);
r.set(0, 0, SkIntToScalar(200), SkIntToScalar(200));
r.offset(SkIntToScalar(20), SkIntToScalar(20));
if (false) {
const SkScalar d = SkIntToScalar(3);
const SkScalar rad[] = { d, d, d, d, d, d, d, d };
SkPath path;
path.addRoundRect(r, rad);
canvas->drawPath(path, paint);
return;
}
drawRectWithLines(canvas, r, paint);
// printf("----- sweep %g %X\n", SkScalarToFloat(fSweep), SkDegreesToRadians(fSweep));
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(0x800000FF);
canvas->drawArc(r, 0, fSweep, true, paint);
paint.setColor(0x800FF000);
canvas->drawArc(r, 0, fSweep, false, paint);
paint.setStyle(SkPaint::kStroke_Style);
paint.setColor(SK_ColorRED);
canvas->drawArc(r, 0, fSweep, true, paint);
paint.setStrokeWidth(0);
paint.setColor(SK_ColorBLUE);
canvas->drawArc(r, 0, fSweep, false, paint);
drawArcs(canvas);
this->inval(NULL);
}
virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) {
// fSweep += SK_Scalar1;
this->inval(NULL);
return this->INHERITED::onFindClickHandler(x, y);
}
virtual bool onClick(Click* click) {
return this->INHERITED::onClick(click);
}
private:
SkScalar fSweep;
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new ArcsView; }
static SkViewRegister reg(MyFactory);
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