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#include "SampleCode.h"
#include "SkCanvas.h"
#include "SkParsePath.h"
#include "SkPath.h"
#include "SkRandom.h"
#include "SkView.h"
static void scale_to_width(SkPath* path, SkScalar dstWidth) {
const SkRect& bounds = path->getBounds();
SkScalar scale = dstWidth / bounds.width();
SkMatrix matrix;
matrix.setScale(scale, scale);
path->transform(matrix);
}
static const struct {
SkPaint::Style fStyle;
SkPaint::Join fJoin;
int fStrokeWidth;
} gRec[] = {
{ SkPaint::kFill_Style, SkPaint::kMiter_Join, 0 },
{ SkPaint::kStroke_Style, SkPaint::kMiter_Join, 0 },
{ SkPaint::kStroke_Style, SkPaint::kMiter_Join, 10 },
{ SkPaint::kStrokeAndFill_Style, SkPaint::kMiter_Join, 10 },
};
class StrokePathView : public SkView {
SkScalar fWidth;
SkPath fPath;
public:
StrokePathView() {
fWidth = SkIntToScalar(120);
#if 0
const char str[] =
"M 0, 3"
"C 10, -10, 30, -10, 0, 28"
"C -30, -10, -10, -10, 0, 3"
"Z";
SkParsePath::FromSVGString(str, &fPath);
#else
fPath.addCircle(0, 0, SkIntToScalar(50), SkPath::kCW_Direction);
fPath.addCircle(0, SkIntToScalar(-50), SkIntToScalar(30), SkPath::kCW_Direction);
#endif
scale_to_width(&fPath, fWidth);
const SkRect& bounds = fPath.getBounds();
fPath.offset(-bounds.fLeft, -bounds.fTop);
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "StrokePath");
return true;
}
return this->INHERITED::onQuery(evt);
}
void drawBG(SkCanvas* canvas) {
canvas->drawColor(0xFFDDDDDD);
}
SkRandom rand;
void drawSet(SkCanvas* canvas, SkPaint* paint) {
SkAutoCanvasRestore acr(canvas, true);
for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); i++) {
paint->setStyle(gRec[i].fStyle);
paint->setStrokeJoin(gRec[i].fJoin);
paint->setStrokeWidth(SkIntToScalar(gRec[i].fStrokeWidth));
canvas->drawPath(fPath, *paint);
canvas->translate(fWidth * 5 / 4, 0);
}
}
virtual void onDraw(SkCanvas* canvas) {
drawBG(canvas);
canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(SK_ColorBLUE);
#if 1
SkPath p;
float r = rand.nextUScalar1() + 0.5f;
SkScalar x = 0, y = 0;
p.moveTo(x, y);
#if 0
p.cubicTo(x-75*r, y+75*r, x-40*r, y+125*r, x, y+85*r);
p.cubicTo(x+40*r, y+125*r, x+75*r, y+75*r, x, y);
#else
p.cubicTo(x+75*r, y+75*r, x+40*r, y+125*r, x, y+85*r);
p.cubicTo(x-40*r, y+125*r, x-75*r, y+75*r, x, y);
#endif
p.close();
fPath = p;
fPath.offset(100, 0);
#endif
fPath.setFillType(SkPath::kWinding_FillType);
drawSet(canvas, &paint);
canvas->translate(0, fPath.getBounds().height() * 5 / 4);
fPath.setFillType(SkPath::kEvenOdd_FillType);
drawSet(canvas, &paint);
}
virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) {
this->inval(NULL);
return this->INHERITED::onFindClickHandler(x, y);
}
private:
typedef SkView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new StrokePathView; }
static SkViewRegister reg(MyFactory);
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