130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun/* 230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * Copyright 2011 Google Inc. All Rights Reserved. 330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * 430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * Licensed under the Apache License, Version 2.0 (the "License"); 530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * you may not use this file except in compliance with the License. 630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * You may obtain a copy of the License at 730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * 830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * http://www.apache.org/licenses/LICENSE-2.0 930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * 1030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * Unless required by applicable law or agreed to in writing, software 1130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * distributed under the License is distributed on an "AS IS" BASIS, 1230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * See the License for the specific language governing permissions and 1430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * limitations under the License. 1530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun */ 1630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 1730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#include "sfntly/table/core/horizontal_metrics_table.h" 1830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#include "sfntly/port/exception_type.h" 1930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 2030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunnamespace sfntly { 2130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun/****************************************************************************** 2230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * HorizontalMetricsTable class 2330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun ******************************************************************************/ 2430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim GurunHorizontalMetricsTable::~HorizontalMetricsTable() {} 2530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 2630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunint32_t HorizontalMetricsTable::NumberOfHMetrics() { 2730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return num_hmetrics_; 2830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 2930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 3030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunint32_t HorizontalMetricsTable::NumberOfLSBs() { 3130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return num_glyphs_ - num_hmetrics_; 3230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 3330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 3430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunint32_t HorizontalMetricsTable::HMetricAdvanceWidth(int32_t entry) { 3530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun if (entry > num_hmetrics_) { 3630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#if !defined (SFNTLY_NO_EXCEPTION) 3730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun throw IndexOutOfBoundException(); 3830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#endif 3930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return 0; 4030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun } 4130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun int32_t offset = Offset::kHMetricsStart + (entry * Offset::kHMetricsSize) + 4230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun Offset::kHMetricsAdvanceWidth; 4330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return data_->ReadUShort(offset); 4430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 4530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 4630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunint32_t HorizontalMetricsTable::HMetricLSB(int32_t entry) { 4730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun if (entry > num_hmetrics_) { 4830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#if !defined (SFNTLY_NO_EXCEPTION) 4930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun throw IndexOutOfBoundException(); 5030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#endif 5130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return 0; 5230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun } 5330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun int32_t offset = Offset::kHMetricsStart + (entry * Offset::kHMetricsSize) + 5430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun Offset::kHMetricsLeftSideBearing; 5530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return data_->ReadShort(offset); 5630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 5730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 5830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunint32_t HorizontalMetricsTable::LsbTableEntry(int32_t entry) { 5930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun if (entry > num_hmetrics_) { 6030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#if !defined (SFNTLY_NO_EXCEPTION) 6130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun throw IndexOutOfBoundException(); 6230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#endif 6330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return 0; 6430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun } 6530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun int32_t offset = Offset::kHMetricsStart + (entry * Offset::kHMetricsSize) + 6630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun Offset::kLeftSideBearingSize; 6730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return data_->ReadShort(offset); 6830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 6930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 7030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunint32_t HorizontalMetricsTable::AdvanceWidth(int32_t glyph_id) { 7130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun if (glyph_id < num_hmetrics_) { 7230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return HMetricAdvanceWidth(glyph_id); 7330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun } 7430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return HMetricAdvanceWidth(glyph_id - num_hmetrics_); 7530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 7630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 7730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunint32_t HorizontalMetricsTable::LeftSideBearing(int32_t glyph_id) { 7830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun if (glyph_id < num_hmetrics_) { 7930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return HMetricLSB(glyph_id); 8030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun } 8130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return LsbTableEntry(glyph_id - num_hmetrics_); 8230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 8330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 8430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim GurunHorizontalMetricsTable::HorizontalMetricsTable(Header* header, 8530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun ReadableFontData* data, 8630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun int32_t num_hmetrics, 8730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun int32_t num_glyphs) 8830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun : Table(header, data), 8930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun num_hmetrics_(num_hmetrics), 9030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun num_glyphs_(num_glyphs) { 9130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 9230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 9330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun/****************************************************************************** 9430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * HorizontalMetricsTable::Builder class 9530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun ******************************************************************************/ 9630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim GurunHorizontalMetricsTable::Builder::Builder(Header* header, WritableFontData* data) 9730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun : TableBasedTableBuilder(header, data), num_hmetrics_(-1), num_glyphs_(-1) { 9830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 9930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 10030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim GurunHorizontalMetricsTable::Builder::Builder(Header* header, ReadableFontData* data) 10130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun : TableBasedTableBuilder(header, data), num_hmetrics_(-1), num_glyphs_(-1) { 10230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 10330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 10430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim GurunHorizontalMetricsTable::Builder::~Builder() {} 10530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 10630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim GurunCALLER_ATTACH FontDataTable* 10730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun HorizontalMetricsTable::Builder::SubBuildTable(ReadableFontData* data) { 10830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun FontDataTablePtr table = 10930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun new HorizontalMetricsTable(header(), data, num_hmetrics_, num_glyphs_); 11030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return table.Detach(); 11130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 11230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 11330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim GurunCALLER_ATTACH HorizontalMetricsTable::Builder* 11430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun HorizontalMetricsTable::Builder::CreateBuilder(Header* header, 11530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun WritableFontData* data) { 11630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun Ptr<HorizontalMetricsTable::Builder> builder; 11730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun builder = new HorizontalMetricsTable::Builder(header, data); 11830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return builder.Detach(); 11930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 12030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 12130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunvoid HorizontalMetricsTable::Builder::SetNumberOfHMetrics( 12230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun int32_t num_hmetrics) { 12330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun assert(num_hmetrics >= 0); 12430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun num_hmetrics_ = num_hmetrics; 12530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun HorizontalMetricsTable* table = 12630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun down_cast<HorizontalMetricsTable*>(this->GetTable()); 12730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun table->num_hmetrics_ = num_hmetrics; 12830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 12930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 13030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunvoid HorizontalMetricsTable::Builder::SetNumGlyphs(int32_t num_glyphs) { 13130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun assert(num_glyphs >= 0); 13230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun num_glyphs_ = num_glyphs; 13330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun HorizontalMetricsTable* table = 13430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun down_cast<HorizontalMetricsTable*>(this->GetTable()); 13530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun table->num_glyphs_ = num_glyphs; 13630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 13730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 13830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} // namespace sfntly 139