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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/ebdt_table.h"
#include <stdlib.h>
#include "sfntly/table/bitmap/composite_bitmap_glyph.h"
#include "sfntly/table/bitmap/simple_bitmap_glyph.h"
namespace sfntly {
/******************************************************************************
* EbdtTable class
******************************************************************************/
EbdtTable::~EbdtTable() {
}
int32_t EbdtTable::Version() {
return data_->ReadFixed(Offset::kVersion);
}
CALLER_ATTACH
BitmapGlyph* EbdtTable::Glyph(int32_t offset, int32_t length, int32_t format) {
ReadableFontDataPtr glyph_data;
glyph_data.Attach(down_cast<ReadableFontData*>(data_->Slice(offset, length)));
return BitmapGlyph::CreateGlyph(glyph_data, format);
}
EbdtTable::EbdtTable(Header* header, ReadableFontData* data)
: SubTableContainerTable(header, data) {
}
/******************************************************************************
* EbdtTable::Builder class
******************************************************************************/
EbdtTable::Builder::Builder(Header* header, WritableFontData* data)
: SubTableContainerTable::Builder(header, data) {
}
EbdtTable::Builder::Builder(Header* header, ReadableFontData* data)
: SubTableContainerTable::Builder(header, data) {
}
EbdtTable::Builder::~Builder() {
}
CALLER_ATTACH FontDataTable*
EbdtTable::Builder::SubBuildTable(ReadableFontData* data) {
FontDataTablePtr table = new EbdtTable(header(), data);
return table.Detach();
}
void EbdtTable::Builder::SubDataSet() {
Revert();
}
int32_t EbdtTable::Builder::SubDataSizeToSerialize() {
if (glyph_builders_.empty()) {
return 0;
}
bool fixed = true;
int32_t size = Offset::kHeaderLength;
for (BitmapGlyphBuilderList::iterator builder_map = glyph_builders_.begin(),
builder_end = glyph_builders_.end();
builder_map != builder_end;
builder_map++) {
for (BitmapGlyphBuilderMap::iterator glyph_entry = builder_map->begin(),
glyph_entry_end = builder_map->end();
glyph_entry != glyph_entry_end;
glyph_entry++) {
int32_t glyph_size = glyph_entry->second->SubDataSizeToSerialize();
size += abs(glyph_size);
fixed = (glyph_size <= 0) ? false : fixed;
}
}
return (fixed ? 1 : -1) * size;
}
bool EbdtTable::Builder::SubReadyToSerialize() {
if (glyph_builders_.empty()) {
return false;
}
return true;
}
int32_t EbdtTable::Builder::SubSerialize(WritableFontData* new_data) {
int32_t size = 0;
size += new_data->WriteFixed(Offset::kVersion, kVersion);
for (BitmapGlyphBuilderList::iterator builder_map = glyph_builders_.begin(),
builder_end = glyph_builders_.end();
builder_map != builder_end;
builder_map++) {
for (BitmapGlyphBuilderMap::iterator glyph_entry = builder_map->begin(),
glyph_entry_end = builder_map->end();
glyph_entry != glyph_entry_end;
glyph_entry++) {
WritableFontDataPtr slice;
slice.Attach(down_cast<WritableFontData*>(new_data->Slice(size)));
size += glyph_entry->second->SubSerialize(slice);
}
}
return size;
}
void EbdtTable::Builder::SetLoca(BitmapLocaList* loca_list) {
assert(loca_list);
Revert();
glyph_loca_.resize(loca_list->size());
std::copy(loca_list->begin(), loca_list->end(), glyph_loca_.begin());
}
void EbdtTable::Builder::GenerateLocaList(BitmapLocaList* output) {
assert(output);
output->clear();
if (glyph_builders_.empty()) {
if (glyph_loca_.empty()) {
return;
}
}
int start_offset = Offset::kHeaderLength;
for (BitmapGlyphBuilderList::iterator builder_map = glyph_builders_.begin(),
builder_end = glyph_builders_.end();
builder_map != builder_end;
builder_map++) {
BitmapGlyphInfoMap new_loca_map;
int32_t glyph_offset = 0;
for (BitmapGlyphBuilderMap::iterator glyph_entry = builder_map->begin(),
glyph_end = builder_map->end();
glyph_entry != glyph_end;
glyph_entry++) {
BitmapGlyphBuilderPtr builder = glyph_entry->second;
int32_t size = builder->SubDataSizeToSerialize();
BitmapGlyphInfoPtr info = new BitmapGlyphInfo(glyph_entry->first,
start_offset + glyph_offset, size, builder->format());
new_loca_map[glyph_entry->first] = info;
glyph_offset += size;
}
start_offset += glyph_offset;
output->push_back(new_loca_map);
}
}
BitmapGlyphBuilderList* EbdtTable::Builder::GlyphBuilders() {
return GetGlyphBuilders();
}
void EbdtTable::Builder::SetGlyphBuilders(
BitmapGlyphBuilderList* glyph_builders) {
glyph_builders_.clear();
std::copy(glyph_builders->begin(), glyph_builders->end(),
glyph_builders_.begin());
set_model_changed();
}
void EbdtTable::Builder::Revert() {
glyph_loca_.clear();
glyph_builders_.clear();
set_model_changed(false);
}
CALLER_ATTACH
EbdtTable::Builder* EbdtTable::Builder::CreateBuilder(Header* header,
WritableFontData* data) {
Ptr<EbdtTable::Builder> builder;
builder = new Builder(header, data);
return builder.Detach();
}
CALLER_ATTACH
EbdtTable::Builder* EbdtTable::Builder::CreateBuilder(Header* header,
ReadableFontData* data) {
Ptr<EbdtTable::Builder> builder;
builder = new Builder(header, data);
return builder.Detach();
}
BitmapGlyphBuilderList* EbdtTable::Builder::GetGlyphBuilders() {
if (glyph_builders_.empty()) {
if (glyph_loca_.empty()) {
#if !defined (SFNTLY_NO_EXCEPTION)
throw IllegalStateException(
"Loca values not set - unable to parse glyph data.");
#endif
return NULL;
}
Initialize(InternalReadData(), &glyph_loca_, &glyph_builders_);
set_model_changed();
}
return &glyph_builders_;
}
void EbdtTable::Builder::Initialize(ReadableFontData* data,
BitmapLocaList* loca_list,
BitmapGlyphBuilderList* output) {
assert(loca_list);
assert(output);
output->clear();
if (data) {
for (BitmapLocaList::iterator loca_map = loca_list->begin(),
loca_end = loca_list->end();
loca_map != loca_end; loca_map++) {
BitmapGlyphBuilderMap glyph_builder_map;
for (BitmapGlyphInfoMap::iterator entry = loca_map->begin(),
entry_end = loca_map->end();
entry != entry_end; entry++) {
BitmapGlyphInfoPtr info = entry->second;
ReadableFontDataPtr slice;
slice.Attach(down_cast<ReadableFontData*>(data->Slice(
info->offset(), info->length())));
BitmapGlyphBuilderPtr glyph_builder;
glyph_builder.Attach(BitmapGlyph::Builder::CreateGlyphBuilder(
slice, info->format()));
glyph_builder_map[entry->first] = glyph_builder;
}
output->push_back(glyph_builder_map);
}
}
}
} // namespace sfntly
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