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