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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.
+ */
+
+#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_