michael@0: 
michael@0: /*
michael@0:  * Copyright 2011 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: #include "SkFlattenable.h"
michael@0: #include "SkPtrRecorder.h"
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: void SkFlattenable::flatten(SkWriteBuffer&) const
michael@0: {
michael@0:     /*  we don't write anything at the moment, but this allows our subclasses
michael@0:         to not know that, since we want them to always call INHERITED::flatten()
michael@0:         in their code.
michael@0:     */
michael@0: }
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: SkNamedFactorySet::SkNamedFactorySet() : fNextAddedFactory(0) {}
michael@0: 
michael@0: uint32_t SkNamedFactorySet::find(SkFlattenable::Factory factory) {
michael@0:     uint32_t index = fFactorySet.find(factory);
michael@0:     if (index > 0) {
michael@0:         return index;
michael@0:     }
michael@0:     const char* name = SkFlattenable::FactoryToName(factory);
michael@0:     if (NULL == name) {
michael@0:         return 0;
michael@0:     }
michael@0:     *fNames.append() = name;
michael@0:     return fFactorySet.add(factory);
michael@0: }
michael@0: 
michael@0: const char* SkNamedFactorySet::getNextAddedFactoryName() {
michael@0:     if (fNextAddedFactory < fNames.count()) {
michael@0:         return fNames[fNextAddedFactory++];
michael@0:     }
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: SkRefCntSet::~SkRefCntSet() {
michael@0:     // call this now, while our decPtr() is sill in scope
michael@0:     this->reset();
michael@0: }
michael@0: 
michael@0: void SkRefCntSet::incPtr(void* ptr) {
michael@0:     ((SkRefCnt*)ptr)->ref();
michael@0: }
michael@0: 
michael@0: void SkRefCntSet::decPtr(void* ptr) {
michael@0:     ((SkRefCnt*)ptr)->unref();
michael@0: }
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: #define MAX_ENTRY_COUNT  1024
michael@0: 
michael@0: struct Entry {
michael@0:     const char*             fName;
michael@0:     SkFlattenable::Factory  fFactory;
michael@0:     SkFlattenable::Type     fType;
michael@0: };
michael@0: 
michael@0: static int gCount;
michael@0: static Entry gEntries[MAX_ENTRY_COUNT];
michael@0: 
michael@0: void SkFlattenable::Register(const char name[], Factory factory, SkFlattenable::Type type) {
michael@0:     SkASSERT(name);
michael@0:     SkASSERT(factory);
michael@0: 
michael@0:     static bool gOnce = false;
michael@0:     if (!gOnce) {
michael@0:         gCount = 0;
michael@0:         gOnce = true;
michael@0:     }
michael@0: 
michael@0:     SkASSERT(gCount < MAX_ENTRY_COUNT);
michael@0: 
michael@0:     gEntries[gCount].fName = name;
michael@0:     gEntries[gCount].fFactory = factory;
michael@0:     gEntries[gCount].fType = type;
michael@0:     gCount += 1;
michael@0: }
michael@0: 
michael@0: #ifdef SK_DEBUG
michael@0: static void report_no_entries(const char* functionName) {
michael@0:     if (!gCount) {
michael@0:         SkDebugf("%s has no registered name/factory/type entries."
michael@0:                  " Call SkFlattenable::InitializeFlattenablesIfNeeded() before using gEntries",
michael@0:                  functionName);
michael@0:     }
michael@0: }
michael@0: #endif
michael@0: 
michael@0: SkFlattenable::Factory SkFlattenable::NameToFactory(const char name[]) {
michael@0:     InitializeFlattenablesIfNeeded();
michael@0: #ifdef SK_DEBUG
michael@0:     report_no_entries(__FUNCTION__);
michael@0: #endif
michael@0:     const Entry* entries = gEntries;
michael@0:     for (int i = gCount - 1; i >= 0; --i) {
michael@0:         if (strcmp(entries[i].fName, name) == 0) {
michael@0:             return entries[i].fFactory;
michael@0:         }
michael@0:     }
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: bool SkFlattenable::NameToType(const char name[], SkFlattenable::Type* type) {
michael@0:     SkASSERT(NULL != type);
michael@0:     InitializeFlattenablesIfNeeded();
michael@0: #ifdef SK_DEBUG
michael@0:     report_no_entries(__FUNCTION__);
michael@0: #endif
michael@0:     const Entry* entries = gEntries;
michael@0:     for (int i = gCount - 1; i >= 0; --i) {
michael@0:         if (strcmp(entries[i].fName, name) == 0) {
michael@0:             *type = entries[i].fType;
michael@0:             return true;
michael@0:         }
michael@0:     }
michael@0:     return false;
michael@0: }
michael@0: 
michael@0: const char* SkFlattenable::FactoryToName(Factory fact) {
michael@0:     InitializeFlattenablesIfNeeded();
michael@0: #ifdef SK_DEBUG
michael@0:     report_no_entries(__FUNCTION__);
michael@0: #endif
michael@0:     const Entry* entries = gEntries;
michael@0:     for (int i = gCount - 1; i >= 0; --i) {
michael@0:         if (entries[i].fFactory == fact) {
michael@0:             return entries[i].fName;
michael@0:         }
michael@0:     }
michael@0:     return NULL;
michael@0: }