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/*
* Copyright 2011 Google Inc. All Rights Reserved.
*
* 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 "sfntly/table/bitmap/eblc_table.h"
namespace sfntly {
/******************************************************************************
* EblcTable class
******************************************************************************/
int32_t EblcTable::Version() {
return data_->ReadFixed(Offset::kVersion);
}
int32_t EblcTable::NumSizes() {
return data_->ReadULongAsInt(Offset::kNumSizes);
}
BitmapSizeTable* EblcTable::GetBitmapSizeTable(int32_t index) {
if (index < 0 || index > NumSizes()) {
#if !defined (SFNTLY_NO_EXCEPTION)
throw IndexOutOfBoundException(
"Size table index is outside the range of tables.");
#endif
return NULL;
}
BitmapSizeTableList* bitmap_size_table_list = GetBitmapSizeTableList();
if (bitmap_size_table_list) {
return (*bitmap_size_table_list)[index];
}
return NULL;
}
EblcTable::EblcTable(Header* header, ReadableFontData* data)
: SubTableContainerTable(header, data) {
}
BitmapSizeTableList* EblcTable::GetBitmapSizeTableList() {
// TODO(arthurhsu): thread locking.
if (bitmap_size_table_.empty()) {
CreateBitmapSizeTable(data_, NumSizes(), &bitmap_size_table_);
}
return &bitmap_size_table_;
}
// static
void EblcTable::CreateBitmapSizeTable(ReadableFontData* data,
int32_t num_sizes,
BitmapSizeTableList* output) {
assert(data);
assert(output);
for (int32_t i = 0; i < num_sizes; ++i) {
ReadableFontDataPtr new_data;
new_data.Attach(down_cast<ReadableFontData*>(
data->Slice(Offset::kBitmapSizeTableArrayStart +
i * Offset::kBitmapSizeTableLength,
Offset::kBitmapSizeTableLength)));
BitmapSizeTablePtr new_table = new BitmapSizeTable(new_data, data);
output->push_back(new_table);
}
}
/******************************************************************************
* EblcTable::Builder class
******************************************************************************/
EblcTable::Builder::Builder(Header* header, WritableFontData* data)
: SubTableContainerTable::Builder(header, data) {
}
EblcTable::Builder::Builder(Header* header, ReadableFontData* data)
: SubTableContainerTable::Builder(header, data) {
}
EblcTable::Builder::~Builder() {
}
int32_t EblcTable::Builder::SubSerialize(WritableFontData* new_data) {
UNREFERENCED_PARAMETER(new_data);
return 0;
}
bool EblcTable::Builder::SubReadyToSerialize() {
return false;
}
int32_t EblcTable::Builder::SubDataSizeToSerialize() {
return 0;
}
void EblcTable::Builder::SubDataSet() {
// NOP
}
CALLER_ATTACH
FontDataTable* EblcTable::Builder::SubBuildTable(ReadableFontData* data) {
Ptr<EblcTable> new_table = new EblcTable(header(), data);
return new_table.Detach();
}
// static
CALLER_ATTACH EblcTable::Builder*
EblcTable::Builder::CreateBuilder(Header* header, WritableFontData* data) {
Ptr<EblcTable::Builder> new_builder = new EblcTable::Builder(header, data);
return new_builder.Detach();
}
} // namespace sfntly
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