1 /*
2 * Copyright 2011 Google Inc. All Rights Reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "sfntly/table/core/horizontal_device_metrics_table.h"
18
19 namespace sfntly {
20 /******************************************************************************
21 * HorizontalDeviceMetricsTable class
22 ******************************************************************************/
~HorizontalDeviceMetricsTable()23 HorizontalDeviceMetricsTable:: ~HorizontalDeviceMetricsTable() {}
24
Version()25 int32_t HorizontalDeviceMetricsTable::Version() {
26 return data_->ReadUShort(Offset::kVersion);
27 }
28
NumRecords()29 int32_t HorizontalDeviceMetricsTable::NumRecords() {
30 return data_->ReadShort(Offset::kNumRecords);
31 }
32
RecordSize()33 int32_t HorizontalDeviceMetricsTable::RecordSize() {
34 return data_->ReadLong(Offset::kSizeDeviceRecord);
35 }
36
PixelSize(int32_t record_index)37 int32_t HorizontalDeviceMetricsTable::PixelSize(int32_t record_index) {
38 if (record_index < 0 || record_index >= NumRecords()) {
39 #if !defined (SFNTLY_NO_EXCEPTION)
40 throw IndexOutOfBoundsException();
41 #endif
42 return -1;
43 }
44 return data_->ReadUByte(Offset::kRecords + record_index * RecordSize() +
45 Offset::kDeviceRecordPixelSize);
46 }
47
MaxWidth(int32_t record_index)48 int32_t HorizontalDeviceMetricsTable::MaxWidth(int32_t record_index) {
49 if (record_index < 0 || record_index >= NumRecords()) {
50 #if !defined (SFNTLY_NO_EXCEPTION)
51 throw IndexOutOfBoundsException();
52 #endif
53 return -1;
54 }
55 return data_->ReadUByte(Offset::kRecords + record_index * RecordSize() +
56 Offset::kDeviceRecordMaxWidth);
57 }
58
Width(int32_t record_index,int32_t glyph_num)59 int32_t HorizontalDeviceMetricsTable::Width(int32_t record_index,
60 int32_t glyph_num) {
61 if (record_index < 0 || record_index >= NumRecords() ||
62 glyph_num < 0 || glyph_num >= num_glyphs_) {
63 #if !defined (SFNTLY_NO_EXCEPTION)
64 throw IndexOutOfBoundsException();
65 #endif
66 return -1;
67 }
68 return data_->ReadUByte(Offset::kRecords + record_index * RecordSize() +
69 Offset::kDeviceRecordWidths + glyph_num);
70 }
71
HorizontalDeviceMetricsTable(Header * header,ReadableFontData * data,int32_t num_glyphs)72 HorizontalDeviceMetricsTable::HorizontalDeviceMetricsTable(
73 Header* header,
74 ReadableFontData* data,
75 int32_t num_glyphs)
76 : Table(header, data), num_glyphs_(num_glyphs) {
77 }
78
79 /******************************************************************************
80 * HorizontalDeviceMetricsTable::Builder class
81 ******************************************************************************/
Builder(Header * header,WritableFontData * data)82 HorizontalDeviceMetricsTable::Builder::Builder(Header* header,
83 WritableFontData* data)
84 : TableBasedTableBuilder(header, data), num_glyphs_(-1) {
85 }
86
Builder(Header * header,ReadableFontData * data)87 HorizontalDeviceMetricsTable::Builder::Builder(Header* header,
88 ReadableFontData* data)
89 : TableBasedTableBuilder(header, data), num_glyphs_(-1) {
90 }
91
~Builder()92 HorizontalDeviceMetricsTable::Builder::~Builder() {}
93
94 CALLER_ATTACH FontDataTable*
SubBuildTable(ReadableFontData * data)95 HorizontalDeviceMetricsTable::Builder::SubBuildTable(ReadableFontData* data) {
96 FontDataTablePtr table = new HorizontalDeviceMetricsTable(header(), data,
97 num_glyphs_);
98 return table.Detach();
99 }
100
SetNumGlyphs(int32_t num_glyphs)101 void HorizontalDeviceMetricsTable::Builder::SetNumGlyphs(int32_t num_glyphs) {
102 if (num_glyphs < 0) {
103 #if !defined (SFNTLY_NO_EXCEPTION)
104 throw IllegalArgumentException("Number of glyphs can't be negative.");
105 #endif
106 return;
107 }
108 num_glyphs_ = num_glyphs;
109 HorizontalDeviceMetricsTable* table =
110 down_cast<HorizontalDeviceMetricsTable*>(GetTable());
111 if (table) {
112 table->num_glyphs_ = num_glyphs;
113 }
114 }
115
116 CALLER_ATTACH HorizontalDeviceMetricsTable::Builder*
CreateBuilder(Header * header,WritableFontData * data)117 HorizontalDeviceMetricsTable::Builder::CreateBuilder(Header* header,
118 WritableFontData* data) {
119 Ptr<HorizontalDeviceMetricsTable::Builder> builder;
120 builder = new HorizontalDeviceMetricsTable::Builder(header, data);
121 return builder.Detach();
122 }
123
124 } // namespace sfntly
125