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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_DATA_FONT_OUTPUT_STREAM_H_
#define SFNTLY_CPP_SRC_SFNTLY_DATA_FONT_OUTPUT_STREAM_H_
#include "sfntly/port/type.h"
#include "sfntly/port/output_stream.h"
namespace sfntly {
// An output stream for writing font data.
// The data types used are as listed:
// BYTE 8-bit unsigned integer.
// CHAR 8-bit signed integer.
// USHORT 16-bit unsigned integer.
// SHORT 16-bit signed integer.
// UINT24 24-bit unsigned integer.
// ULONG 32-bit unsigned integer.
// LONG 32-bit signed integer.
// Fixed 32-bit signed fixed-point number (16.16)
// FUNIT Smallest measurable distance in the em space.
// FWORD 16-bit signed integer (SHORT) that describes a quantity in FUnits.
// UFWORD 16-bit unsigned integer (USHORT) that describes a quantity in
// FUnits.
// F2DOT14 16-bit signed fixed number with the low 14 bits of fraction (2.14)
// LONGDATETIME Date represented in number of seconds since 12:00 midnight,
// January 1, 1904. The value is represented as a signed 64-bit
// integer.
// Note: The wrapped output stream is *NOT* reference counted (because it's
// meaningless to ref-count an I/O stream).
class FontOutputStream : public OutputStream {
public:
explicit FontOutputStream(OutputStream* os);
virtual ~FontOutputStream();
virtual size_t position() { return position_; }
virtual void Write(byte_t b);
virtual void Write(ByteVector* b);
virtual void Write(ByteVector* b, int32_t off, int32_t len);
virtual void Write(byte_t* b, int32_t off, int32_t len);
virtual void WriteChar(byte_t c);
virtual void WriteUShort(int32_t us);
virtual void WriteShort(int32_t s);
virtual void WriteUInt24(int32_t ui);
virtual void WriteULong(int64_t ul);
virtual void WriteLong(int64_t l);
virtual void WriteFixed(int32_t l);
virtual void WriteDateTime(int64_t date);
// Note: C++ port only.
virtual void Flush();
virtual void Close();
private:
// Note: we do not use the variable name out as in Java because it has
// special meaning in VC++ and will be very confusing.
OutputStream* stream_;
size_t position_;
};
} // namespace sfntly
#endif // SFNTLY_CPP_SRC_SFNTLY_DATA_FONT_OUTPUT_STREAM_H_
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