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/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkPathEffect.h"
#include "SkPath.h"
#include "SkReadBuffer.h"
#include "SkWriteBuffer.h"
///////////////////////////////////////////////////////////////////////////////
void SkPathEffect::computeFastBounds(SkRect* dst, const SkRect& src) const {
*dst = src;
}
bool SkPathEffect::asPoints(PointData* results, const SkPath& src,
const SkStrokeRec&, const SkMatrix&, const SkRect*) const {
return false;
}
///////////////////////////////////////////////////////////////////////////////
SkPairPathEffect::SkPairPathEffect(SkPathEffect* pe0, SkPathEffect* pe1)
: fPE0(pe0), fPE1(pe1) {
SkASSERT(pe0);
SkASSERT(pe1);
fPE0->ref();
fPE1->ref();
}
SkPairPathEffect::~SkPairPathEffect() {
SkSafeUnref(fPE0);
SkSafeUnref(fPE1);
}
/*
Format: [oe0-factory][pe1-factory][pe0-size][pe0-data][pe1-data]
*/
void SkPairPathEffect::flatten(SkWriteBuffer& buffer) const {
this->INHERITED::flatten(buffer);
buffer.writeFlattenable(fPE0);
buffer.writeFlattenable(fPE1);
}
SkPairPathEffect::SkPairPathEffect(SkReadBuffer& buffer) {
fPE0 = buffer.readPathEffect();
fPE1 = buffer.readPathEffect();
// either of these may fail, so we have to check for nulls later on
}
///////////////////////////////////////////////////////////////////////////////
bool SkComposePathEffect::filterPath(SkPath* dst, const SkPath& src,
SkStrokeRec* rec, const SkRect* cullRect) const {
// we may have failed to unflatten these, so we have to check
if (!fPE0 || !fPE1) {
return false;
}
SkPath tmp;
const SkPath* ptr = &src;
if (fPE1->filterPath(&tmp, src, rec, cullRect)) {
ptr = &tmp;
}
return fPE0->filterPath(dst, *ptr, rec, cullRect);
}
///////////////////////////////////////////////////////////////////////////////
bool SkSumPathEffect::filterPath(SkPath* dst, const SkPath& src,
SkStrokeRec* rec, const SkRect* cullRect) const {
// use bit-or so that we always call both, even if the first one succeeds
return fPE0->filterPath(dst, src, rec, cullRect) |
fPE1->filterPath(dst, src, rec, cullRect);
}
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