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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/core/horizontal_device_metrics_table.h"
namespace sfntly {
/******************************************************************************
* HorizontalDeviceMetricsTable class
******************************************************************************/
HorizontalDeviceMetricsTable:: ~HorizontalDeviceMetricsTable() {}
int32_t HorizontalDeviceMetricsTable::Version() {
return data_->ReadUShort(Offset::kVersion);
}
int32_t HorizontalDeviceMetricsTable::NumRecords() {
return data_->ReadShort(Offset::kNumRecords);
}
int32_t HorizontalDeviceMetricsTable::RecordSize() {
return data_->ReadLong(Offset::kSizeDeviceRecord);
}
int32_t HorizontalDeviceMetricsTable::PixelSize(int32_t record_index) {
if (record_index < 0 || record_index >= NumRecords()) {
#if !defined (SFNTLY_NO_EXCEPTION)
throw IndexOutOfBoundsException();
#endif
return -1;
}
return data_->ReadUByte(Offset::kRecords + record_index * RecordSize() +
Offset::kDeviceRecordPixelSize);
}
int32_t HorizontalDeviceMetricsTable::MaxWidth(int32_t record_index) {
if (record_index < 0 || record_index >= NumRecords()) {
#if !defined (SFNTLY_NO_EXCEPTION)
throw IndexOutOfBoundsException();
#endif
return -1;
}
return data_->ReadUByte(Offset::kRecords + record_index * RecordSize() +
Offset::kDeviceRecordMaxWidth);
}
int32_t HorizontalDeviceMetricsTable::Width(int32_t record_index,
int32_t glyph_num) {
if (record_index < 0 || record_index >= NumRecords() ||
glyph_num < 0 || glyph_num >= num_glyphs_) {
#if !defined (SFNTLY_NO_EXCEPTION)
throw IndexOutOfBoundsException();
#endif
return -1;
}
return data_->ReadUByte(Offset::kRecords + record_index * RecordSize() +
Offset::kDeviceRecordWidths + glyph_num);
}
HorizontalDeviceMetricsTable::HorizontalDeviceMetricsTable(
Header* header,
ReadableFontData* data,
int32_t num_glyphs)
: Table(header, data), num_glyphs_(num_glyphs) {
}
/******************************************************************************
* HorizontalDeviceMetricsTable::Builder class
******************************************************************************/
HorizontalDeviceMetricsTable::Builder::Builder(Header* header,
WritableFontData* data)
: TableBasedTableBuilder(header, data), num_glyphs_(-1) {
}
HorizontalDeviceMetricsTable::Builder::Builder(Header* header,
ReadableFontData* data)
: TableBasedTableBuilder(header, data), num_glyphs_(-1) {
}
HorizontalDeviceMetricsTable::Builder::~Builder() {}
CALLER_ATTACH FontDataTable*
HorizontalDeviceMetricsTable::Builder::SubBuildTable(ReadableFontData* data) {
FontDataTablePtr table = new HorizontalDeviceMetricsTable(header(), data,
num_glyphs_);
return table.Detach();
}
void HorizontalDeviceMetricsTable::Builder::SetNumGlyphs(int32_t num_glyphs) {
if (num_glyphs < 0) {
#if !defined (SFNTLY_NO_EXCEPTION)
throw IllegalArgumentException("Number of glyphs can't be negative.");
#endif
return;
}
num_glyphs_ = num_glyphs;
HorizontalDeviceMetricsTable* table =
down_cast<HorizontalDeviceMetricsTable*>(GetTable());
if (table) {
table->num_glyphs_ = num_glyphs;
}
}
CALLER_ATTACH HorizontalDeviceMetricsTable::Builder*
HorizontalDeviceMetricsTable::Builder::CreateBuilder(Header* header,
WritableFontData* data) {
Ptr<HorizontalDeviceMetricsTable::Builder> builder;
builder = new HorizontalDeviceMetricsTable::Builder(header, data);
return builder.Detach();
}
} // namespace sfntly
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