ed881c2704
git-svn-id: http://skia.googlecode.com/svn/trunk@353 2bbb7eff-a529-9590-31e7-b0007b416f81
126 lines
3.5 KiB
C++
126 lines
3.5 KiB
C++
#include "SampleCode.h"
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#include "SkCanvas.h"
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#include "SkParsePath.h"
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#include "SkPath.h"
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#include "SkRandom.h"
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#include "SkView.h"
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static void scale_to_width(SkPath* path, SkScalar dstWidth) {
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const SkRect& bounds = path->getBounds();
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SkScalar scale = dstWidth / bounds.width();
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SkMatrix matrix;
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matrix.setScale(scale, scale);
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path->transform(matrix);
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}
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static const struct {
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SkPaint::Style fStyle;
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SkPaint::Join fJoin;
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int fStrokeWidth;
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} gRec[] = {
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{ SkPaint::kFill_Style, SkPaint::kMiter_Join, 0 },
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{ SkPaint::kStroke_Style, SkPaint::kMiter_Join, 0 },
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{ SkPaint::kStroke_Style, SkPaint::kMiter_Join, 10 },
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{ SkPaint::kStrokeAndFill_Style, SkPaint::kMiter_Join, 10 },
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};
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class StrokePathView : public SkView {
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SkScalar fWidth;
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SkPath fPath;
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public:
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StrokePathView() {
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fWidth = SkIntToScalar(120);
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#if 0
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const char str[] =
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"M 0, 3"
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"C 10, -10, 30, -10, 0, 28"
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"C -30, -10, -10, -10, 0, 3"
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"Z";
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SkParsePath::FromSVGString(str, &fPath);
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#else
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fPath.addCircle(0, 0, SkIntToScalar(50), SkPath::kCW_Direction);
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fPath.addCircle(0, SkIntToScalar(-50), SkIntToScalar(30), SkPath::kCW_Direction);
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#endif
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scale_to_width(&fPath, fWidth);
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const SkRect& bounds = fPath.getBounds();
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fPath.offset(-bounds.fLeft, -bounds.fTop);
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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, "StrokePath");
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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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void drawBG(SkCanvas* canvas) {
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canvas->drawColor(0xFFDDDDDD);
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}
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SkRandom rand;
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void drawSet(SkCanvas* canvas, SkPaint* paint) {
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SkAutoCanvasRestore acr(canvas, true);
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for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); i++) {
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paint->setStyle(gRec[i].fStyle);
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paint->setStrokeJoin(gRec[i].fJoin);
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paint->setStrokeWidth(SkIntToScalar(gRec[i].fStrokeWidth));
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canvas->drawPath(fPath, *paint);
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canvas->translate(fWidth * 5 / 4, 0);
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}
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}
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virtual void onDraw(SkCanvas* canvas) {
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drawBG(canvas);
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canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(SK_ColorBLUE);
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#if 1
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SkPath p;
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float r = rand.nextUScalar1() + 0.5f;
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SkScalar x = 0, y = 0;
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p.moveTo(x, y);
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#if 0
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p.cubicTo(x-75*r, y+75*r, x-40*r, y+125*r, x, y+85*r);
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p.cubicTo(x+40*r, y+125*r, x+75*r, y+75*r, x, y);
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#else
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p.cubicTo(x+75*r, y+75*r, x+40*r, y+125*r, x, y+85*r);
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p.cubicTo(x-40*r, y+125*r, x-75*r, y+75*r, x, y);
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#endif
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p.close();
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fPath = p;
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fPath.offset(100, 0);
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#endif
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fPath.setFillType(SkPath::kWinding_FillType);
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drawSet(canvas, &paint);
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canvas->translate(0, fPath.getBounds().height() * 5 / 4);
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fPath.setFillType(SkPath::kEvenOdd_FillType);
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drawSet(canvas, &paint);
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}
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virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) {
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this->inval(NULL);
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return this->INHERITED::onFindClickHandler(x, y);
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}
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private:
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typedef SkView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new StrokePathView; }
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static SkViewRegister reg(MyFactory);
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