diff options
Diffstat (limited to 'sfntly/table/core/horizontal_device_metrics_table.h')
-rw-r--r-- | sfntly/table/core/horizontal_device_metrics_table.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/sfntly/table/core/horizontal_device_metrics_table.h b/sfntly/table/core/horizontal_device_metrics_table.h new file mode 100644 index 0000000..4a27ba0 --- /dev/null +++ b/sfntly/table/core/horizontal_device_metrics_table.h @@ -0,0 +1,82 @@ +/* + * 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. + */ + +#ifndef SFNTLY_CPP_SRC_SFNTLY_TABLE_CORE_HORIZONTAL_DEVICE_METRICS_TABLE_H_ +#define SFNTLY_CPP_SRC_SFNTLY_TABLE_CORE_HORIZONTAL_DEVICE_METRICS_TABLE_H_ + +#include "sfntly/table/table.h" +#include "sfntly/table/table_based_table_builder.h" + +namespace sfntly { + +// A Horizontal Device Metrics table - 'hdmx' +class HorizontalDeviceMetricsTable + : public Table, + public RefCounted<HorizontalDeviceMetricsTable> { + public: + class Builder : public TableBasedTableBuilder, public RefCounted<Builder> { + public: + // Constructor scope altered to public because C++ does not allow base + // class to instantiate derived class with protected constructors. + Builder(Header* header, WritableFontData* data); + Builder(Header* header, ReadableFontData* data); + virtual ~Builder(); + virtual CALLER_ATTACH FontDataTable* SubBuildTable(ReadableFontData* data); + + static CALLER_ATTACH Builder* CreateBuilder(Header* header, + WritableFontData* data); + + void SetNumGlyphs(int32_t num_glyphs); + + private: + int32_t num_glyphs_; + }; + + virtual ~HorizontalDeviceMetricsTable(); + + int32_t Version(); + int32_t NumRecords(); + int32_t RecordSize(); + int32_t PixelSize(int32_t record_index); + int32_t MaxWidth(int32_t record_index); + int32_t Width(int32_t record_index, int32_t glyph_num); + + private: + struct Offset { + enum { + kVersion = 0,
+ kNumRecords = 2,
+ kSizeDeviceRecord = 4,
+ kRecords = 8,
+
+ // Offsets within a device record
+ kDeviceRecordPixelSize = 0,
+ kDeviceRecordMaxWidth = 1,
+ kDeviceRecordWidths = 2, + }; + }; + HorizontalDeviceMetricsTable(Header* header, + ReadableFontData* data, + int32_t num_glyphs); + + int32_t num_glyphs_; +}; +typedef Ptr<HorizontalDeviceMetricsTable> HorizontalDeviceMetricsTablePtr; +typedef Ptr<HorizontalDeviceMetricsTable::Builder> + HorizontalDeviceMetricsTableBuilderPtr; +} // namespace sfntly + +#endif // SFNTLY_CPP_SRC_SFNTLY_TABLE_CORE_HORIZONTAL_DEVICE_METRICS_TABLE_H_ |