зеркало из https://github.com/mozilla/moz-skia.git
106 строки
2.9 KiB
C++
106 строки
2.9 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkBlurMaskFilter.h"
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#include "SkCanvas.h"
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#include "SkPath.h"
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#define STROKE_WIDTH SkIntToScalar(10)
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typedef void (*Proc)(SkCanvas*, const SkRect&, const SkPaint&);
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static void fill_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
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canvas->drawRect(r, p);
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}
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static void stroke_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
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SkPaint paint(p);
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setStrokeWidth(STROKE_WIDTH);
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canvas->drawRect(r, paint);
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}
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static void draw_donut(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
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SkRect rect;
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SkPath path;
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rect = r;
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rect.outset(STROKE_WIDTH/2, STROKE_WIDTH/2);
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path.addRect(rect);
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rect = r;
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rect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
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path.addRect(rect);
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path.setFillType(SkPath::kEvenOdd_FillType);
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canvas->drawPath(path, p);
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}
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class BlurRectGM : public skiagm::GM {
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SkAutoTUnref<SkMaskFilter> fMaskFilter;
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public:
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BlurRectGM() :
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fMaskFilter(SkBlurMaskFilter::Create(STROKE_WIDTH/2,
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SkBlurMaskFilter::kNormal_BlurStyle,
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SkBlurMaskFilter::kHighQuality_BlurFlag))
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{}
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protected:
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virtual SkString onShortName() {
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return SkString("blurrect");
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}
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virtual SkISize onISize() {
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return SkISize::Make(640, 480);
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}
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virtual void onDraw(SkCanvas* canvas) {
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canvas->translate(STROKE_WIDTH*3/2, STROKE_WIDTH*3/2);
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SkPaint paint;
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paint.setMaskFilter(fMaskFilter);
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static const Proc procs[] = {
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fill_rect, stroke_rect, draw_donut
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};
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SkRect r = { 0, 0, 250, 120 };
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this->drawProcs(canvas, r, paint, false, procs, SK_ARRAY_COUNT(procs));
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canvas->translate(r.width() * 4/3, 0);
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this->drawProcs(canvas, r, paint, true, procs, SK_ARRAY_COUNT(procs));
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}
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virtual uint32_t onGetFlags() const { return kSkipPipe_Flag; }
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private:
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void drawProcs(SkCanvas* canvas, const SkRect& r, const SkPaint& paint,
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bool doClip, const Proc procs[], size_t procsCount) {
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SkAutoCanvasRestore acr(canvas, true);
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for (size_t i = 0; i < procsCount; ++i) {
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if (doClip) {
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SkRect clipRect(r);
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clipRect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
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canvas->save();
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canvas->clipRect(r);
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}
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procs[i](canvas, r, paint);
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if (doClip) {
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canvas->restore();
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}
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canvas->translate(0, r.height() * 4/3);
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}
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}
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new BlurRectGM;)
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