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