зеркало из https://github.com/mozilla/moz-skia.git
109 строки
3.3 KiB
C++
109 строки
3.3 KiB
C++
/*
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* Copyright 2013 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 "SampleCode.h"
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#include "SkCanvas.h"
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#include "SkCornerPathEffect.h"
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#include "SkDashPathEffect.h"
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#include "SkPathUtils.h"
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#include "SkRandom.h"
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#include "SkView.h"
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typedef void (*BitsToPath)(SkPath*, const char*, int, int, int);
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static const BitsToPath gBitsToPath_fns[] = {
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SkPathUtils::BitsToPath_Path,
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SkPathUtils::BitsToPath_Region,
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};
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// hardcoded bitmap patterns
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static const uint8_t gBits[][16] = {
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{ 0x18, 0x00, 0x3c, 0x00, 0x7e, 0x00, 0xdb, 0x00,
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0xff, 0x00, 0x24, 0x00, 0x5a, 0x00, 0xa5, 0x00 },
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{ 0x20, 0x80, 0x91, 0x20, 0xbf, 0xa0, 0xee, 0xe0,
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0xff, 0xe0, 0x7f, 0xc0, 0x20, 0x80, 0x40, 0x40 },
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{ 0x0f, 0x00, 0x7f, 0xe0, 0xff, 0xf0, 0xe6, 0x70,
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0xff, 0xf0, 0x19, 0x80, 0x36, 0xc0, 0xc0, 0x30 }
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};
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class SamplePathUtils : public SampleView {
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public:
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static const int fNumBits = 3;
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static const int fH = 8, fW = 12;
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static const size_t fRowBytes = 2;
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static const int fNumChars = fH * fRowBytes;
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SkPaint fBmpPaint;
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SkScalar fPhase;
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SamplePathUtils() {
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fBmpPaint.setAntiAlias(true); // Black paint for bitmap
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fBmpPaint.setStyle(SkPaint::kFill_Style);
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fPhase = 0.0f; // to animate the dashed path
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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, "PathUtils");
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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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/////////////////////////////////////////////////////////////
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virtual void onDrawContent(SkCanvas* canvas) {
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SkScalar intervals[8] = { .5f, .3f, .5f, .3f, .5f, .3f, .5f, .3f };
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SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, 2, fPhase));
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SkAutoTUnref<SkCornerPathEffect> corner(SkCornerPathEffect::Create(.25f));
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SkAutoTUnref<SkComposePathEffect> compose(SkComposePathEffect::Create(dash, corner));
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SkPaint outlinePaint;
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outlinePaint.setAntiAlias(true); // dashed paint for bitmap
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outlinePaint.setStyle(SkPaint::kStroke_Style);
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outlinePaint.setPathEffect(compose);
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canvas->scale(10.0f, 10.0f); // scales up
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for (int i = 0; i < fNumBits; ++i) {
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canvas->save();
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for (size_t j = 0; j < SK_ARRAY_COUNT(gBitsToPath_fns); ++j) {
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SkPath path;
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gBitsToPath_fns[j](&path, (char*) &gBits[i], fW, fH, fRowBytes);
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//draw skPath and outline
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canvas->drawPath(path, fBmpPaint);
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canvas->translate(1.5f * fW, 0); // translates past previous bitmap
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canvas->drawPath(path, outlinePaint);
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canvas->translate(1.5f * fW, 0); // translates past previous bitmap
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}
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canvas->restore();
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canvas->translate(0, 1.5f * fH); //translate to next row
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}
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// for animated pathEffect
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fPhase += .01f;
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this->inval(NULL);
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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 SamplePathUtils; }
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static SkViewRegister reg(MyFactory)
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;
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