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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkFlattenable.h"
#include "SkTypeface.h"
SK_DEFINE_INST_COUNT(SkFlattenable)
///////////////////////////////////////////////////////////////////////////////
void SkFlattenable::flatten(SkFlattenableWriteBuffer&) const
{
/* we don't write anything at the moment, but this allows our subclasses
to not know that, since we want them to always call INHERITED::flatten()
in their code.
*/
}
///////////////////////////////////////////////////////////////////////////////
SkFlattenableReadBuffer::SkFlattenableReadBuffer() {
fRCArray = NULL;
fRCCount = 0;
fTFArray = NULL;
fTFCount = 0;
fFactoryTDArray = NULL;
fFactoryArray = NULL;
fFactoryCount = 0;
// Set default values. These should be explicitly set by our client
// via setFlags() if the buffer came from serialization.
fFlags = 0;
#ifdef SK_SCALAR_IS_FLOAT
fFlags |= kScalarIsFloat_Flag;
#endif
if (8 == sizeof(void*)) {
fFlags |= kPtrIs64Bit_Flag;
}
}
///////////////////////////////////////////////////////////////////////////////
SkFlattenableWriteBuffer::SkFlattenableWriteBuffer() {
fFlags = (Flags)0;
fRCSet = NULL;
fTFSet = NULL;
fFactorySet = NULL;
}
SkFlattenableWriteBuffer::~SkFlattenableWriteBuffer() {
SkSafeUnref(fRCSet);
SkSafeUnref(fTFSet);
SkSafeUnref(fFactorySet);
}
SkRefCntSet* SkFlattenableWriteBuffer::setRefCntRecorder(SkRefCntSet* rec) {
SkRefCnt_SafeAssign(fRCSet, rec);
return rec;
}
SkRefCntSet* SkFlattenableWriteBuffer::setTypefaceRecorder(SkRefCntSet* rec) {
SkRefCnt_SafeAssign(fTFSet, rec);
return rec;
}
SkFactorySet* SkFlattenableWriteBuffer::setFactoryRecorder(SkFactorySet* rec) {
SkRefCnt_SafeAssign(fFactorySet, rec);
return rec;
}
void SkFlattenableWriteBuffer::writeRefCnt(SkRefCnt* obj) {
SkASSERT(!isCrossProcess());
if (NULL == obj || NULL == fRCSet) {
this->write32(0);
} else {
this->write32(fRCSet->add(obj));
}
}
void SkFlattenableWriteBuffer::writeTypeface(SkTypeface* obj) {
if (NULL == obj || NULL == fTFSet) {
this->write32(0);
} else {
this->write32(fTFSet->add(obj));
}
}
///////////////////////////////////////////////////////////////////////////////
SkRefCntSet::~SkRefCntSet() {
// call this now, while our decPtr() is sill in scope
this->reset();
}
void SkRefCntSet::incPtr(void* ptr) {
((SkRefCnt*)ptr)->ref();
}
void SkRefCntSet::decPtr(void* ptr) {
((SkRefCnt*)ptr)->unref();
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
#define MAX_PAIR_COUNT 1024
struct Pair {
const char* fName;
SkFlattenable::Factory fFactory;
};
static int gCount;
static Pair gPairs[MAX_PAIR_COUNT];
void SkFlattenable::Register(const char name[], Factory factory) {
SkASSERT(name);
SkASSERT(factory);
static bool gOnce;
if (!gOnce) {
gCount = 0;
gOnce = true;
}
SkASSERT(gCount < MAX_PAIR_COUNT);
gPairs[gCount].fName = name;
gPairs[gCount].fFactory = factory;
gCount += 1;
}
#if !SK_ALLOW_STATIC_GLOBAL_INITIALIZERS && defined(SK_DEBUG)
static void report_no_entries(const char* functionName) {
if (!gCount) {
SkDebugf("%s has no registered name/factory pairs."
" Call SkGraphics::Init() at process initialization time.",
functionName);
}
}
#endif
SkFlattenable::Factory SkFlattenable::NameToFactory(const char name[]) {
#if !SK_ALLOW_STATIC_GLOBAL_INITIALIZERS && defined(SK_DEBUG)
report_no_entries(__FUNCTION__);
#endif
const Pair* pairs = gPairs;
for (int i = gCount - 1; i >= 0; --i) {
if (strcmp(pairs[i].fName, name) == 0) {
return pairs[i].fFactory;
}
}
return NULL;
}
const char* SkFlattenable::FactoryToName(Factory fact) {
#if !SK_ALLOW_STATIC_GLOBAL_INITIALIZERS && defined(SK_DEBUG)
report_no_entries(__FUNCTION__);
#endif
const Pair* pairs = gPairs;
for (int i = gCount - 1; i >= 0; --i) {
if (pairs[i].fFactory == fact) {
return pairs[i].fName;
}
}
return NULL;
}
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