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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 "SkAnimTimer.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkDrawable.h"
#include "SkGradientShader.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "Sk1DPathEffect.h"
#include "SkCornerPathEffect.h"
#include "SkPathMeasure.h"
#include "SkPictureRecorder.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, 10, 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 {
class MyDrawable : public SkDrawable {
SkRect fR;
SkScalar fSweep;
public:
MyDrawable(const SkRect& r) : fR(r), fSweep(0) {}
void setSweep(SkScalar sweep) {
if (fSweep != sweep) {
fSweep = sweep;
this->notifyDrawingChanged();
}
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStrokeWidth(SkIntToScalar(2));
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(0x800000FF);
canvas->drawArc(fR, 0, fSweep, true, paint);
paint.setColor(0x800FF000);
canvas->drawArc(fR, 0, fSweep, false, paint);
paint.setStyle(SkPaint::kStroke_Style);
paint.setColor(SK_ColorRED);
canvas->drawArc(fR, 0, fSweep, true, paint);
paint.setStrokeWidth(0);
paint.setColor(SK_ColorBLUE);
canvas->drawArc(fR, 0, fSweep, false, paint);
}
SkRect onGetBounds() override {
SkRect r(fR);
r.outset(2, 2);
return r;
}
};
public:
SkRect fRect;
sk_sp<MyDrawable> fAnimatingDrawable;
sk_sp<SkDrawable> fRootDrawable;
ArcsView() {
testparse();
fSweep = SkIntToScalar(100);
this->setBGColor(0xFFDDDDDD);
fRect.set(0, 0, SkIntToScalar(200), SkIntToScalar(200));
fRect.offset(SkIntToScalar(20), SkIntToScalar(20));
fAnimatingDrawable = sk_make_sp<MyDrawable>(fRect);
SkPictureRecorder recorder;
this->drawRoot(recorder.beginRecording(SkRect::MakeWH(800, 500)));
fRootDrawable = recorder.finishRecordingAsDrawable();
}
protected:
// overrides from SkEventSink
bool onQuery(SkEvent* evt) override {
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 DrawLabel(SkCanvas* canvas, const SkRect& rect, SkScalar start, SkScalar sweep) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextAlign(SkPaint::kCenter_Align);
SkString str;
str.appendScalar(start);
str.append(", ");
str.appendScalar(sweep);
canvas->drawString(str, rect.centerX(),
rect.fBottom + paint.getTextSize() * 5/4, paint);
}
static void DrawArcs(SkCanvas* canvas) {
SkPaint paint;
SkRect r;
SkScalar w = 75;
SkScalar h = 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 SkScalar 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, gAngles[i], gAngles[i+1], false, paint);
DrawLabel(canvas, r, gAngles[i], gAngles[i+1]);
canvas->translate(w * 8 / 7, 0);
}
canvas->restore();
}
void drawRoot(SkCanvas* canvas) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStrokeWidth(SkIntToScalar(2));
paint.setStyle(SkPaint::kStroke_Style);
DrawRectWithLines(canvas, fRect, paint);
canvas->drawDrawable(fAnimatingDrawable.get());
DrawArcs(canvas);
}
void onDrawContent(SkCanvas* canvas) override {
canvas->drawDrawable(fRootDrawable.get());
}
bool onAnimate(const SkAnimTimer& timer) override {
SkScalar angle = SkDoubleToScalar(fmod(timer.secs() * 360 / 24, 360));
fAnimatingDrawable->setSweep(angle);
return true;
}
SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) override {
// fSweep += SK_Scalar1;
this->inval(nullptr);
return this->INHERITED::onFindClickHandler(x, y, modi);
}
private:
SkScalar fSweep;
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new ArcsView; }
static SkViewRegister reg(MyFactory);
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