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/* libs/graphics/sgl/SkPathEffect.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include "SkPathEffect.h"
#include "SkPath.h"
#include "SkBuffer.h"
//////////////////////////////////////////////////////////////////////////////////
SkPairPathEffect::SkPairPathEffect(SkPathEffect* pe0, SkPathEffect* pe1)
: fPE0(pe0), fPE1(pe1)
{
SkASSERT(pe0);
SkASSERT(pe1);
fPE0->ref();
fPE1->ref();
}
SkPairPathEffect::~SkPairPathEffect()
{
fPE0->unref();
fPE1->unref();
}
/*
Format: [oe0-factory][pe1-factory][pe0-size][pe0-data][pe1-data]
*/
void SkPairPathEffect::flatten(SkFlattenableWriteBuffer& buffer)
{
buffer.writeFlattenable(fPE0);
buffer.writeFlattenable(fPE1);
}
SkPairPathEffect::SkPairPathEffect(SkFlattenableReadBuffer& buffer)
{
fPE0 = (SkPathEffect*)buffer.readFlattenable();
fPE1 = (SkPathEffect*)buffer.readFlattenable();
}
//////////////////////////////////////////////////////////////////////////////////
bool SkComposePathEffect::filterPath(SkPath* dst, const SkPath& src, SkScalar* width)
{
SkPath tmp;
const SkPath* ptr = &src;
if (fPE1->filterPath(&tmp, src, width))
ptr = &tmp;
return fPE0->filterPath(dst, *ptr, width);
}
//////////////////////////////////////////////////////////////////////////////////
bool SkSumPathEffect::filterPath(SkPath* dst, const SkPath& src, SkScalar* width)
{
// use bit-or so that we always call both, even if the first one succeeds
return fPE0->filterPath(dst, src, width) | fPE1->filterPath(dst, src, width);
}
/////////////////////////////////////////////////////////////////////////////////
#include "SkStroke.h"
SkStrokePathEffect::SkStrokePathEffect(const SkPaint& paint)
: fWidth(paint.getStrokeWidth()), fMiter(paint.getStrokeMiter()),
fStyle(SkToU8(paint.getStyle())), fJoin(SkToU8(paint.getStrokeJoin())), fCap(SkToU8(paint.getStrokeCap()))
{
}
SkStrokePathEffect::SkStrokePathEffect(SkScalar width, SkPaint::Style style, SkPaint::Join join, SkPaint::Cap cap, SkScalar miter)
: fWidth(width), fMiter(miter), fStyle(SkToU8(style)), fJoin(SkToU8(join)), fCap(SkToU8(cap))
{
if (miter < 0) // signal they want the default
fMiter = SK_DefaultMiterLimit;
}
bool SkStrokePathEffect::filterPath(SkPath* dst, const SkPath& src, SkScalar* width)
{
if (fWidth < 0 || fStyle == SkPaint::kFill_Style)
return false;
if (fStyle == SkPaint::kStroke_Style && fWidth == 0) // hairline
{
*width = 0;
return true;
}
SkStroke stroke;
stroke.setWidth(fWidth);
stroke.setMiterLimit(fMiter);
stroke.setJoin((SkPaint::Join)fJoin);
stroke.setCap((SkPaint::Cap)fCap);
stroke.setDoFill(fStyle == SkPaint::kStrokeAndFill_Style);
stroke.strokePath(src, dst);
return true;
}
SkFlattenable::Factory SkStrokePathEffect::getFactory()
{
return CreateProc;
}
SkFlattenable* SkStrokePathEffect::CreateProc(SkFlattenableReadBuffer& buffer)
{
return SkNEW_ARGS(SkStrokePathEffect, (buffer));
}
void SkStrokePathEffect::flatten(SkFlattenableWriteBuffer& buffer)
{
buffer.writeScalar(fWidth);
buffer.writeScalar(fMiter);
buffer.write8(fStyle);
buffer.write8(fJoin);
buffer.write8(fCap);
}
SkStrokePathEffect::SkStrokePathEffect(SkFlattenableReadBuffer& buffer)
{
fWidth = buffer.readScalar();
fMiter = buffer.readScalar();
fStyle = buffer.readU8();
fJoin = buffer.readU8();
fCap = buffer.readU8();
}
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