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      1 /*
      2  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  */
     19 
     20 #ifndef SVGPathByteStream_h
     21 #define SVGPathByteStream_h
     22 
     23 #if ENABLE(SVG)
     24 #include <wtf/Noncopyable.h>
     25 #include <wtf/PassOwnPtr.h>
     26 #include <wtf/Vector.h>
     27 
     28 namespace WebCore {
     29 
     30 // Type definitions for the byte stream data
     31 typedef union {
     32     bool value;
     33     unsigned char bytes[sizeof(bool)];
     34 } BoolByte;
     35 
     36 typedef union {
     37     float value;
     38     unsigned char bytes[sizeof(float)];
     39 } FloatByte;
     40 
     41 typedef union {
     42     unsigned short value;
     43     unsigned char bytes[sizeof(unsigned short)];
     44 } UnsignedShortByte;
     45 
     46 class SVGPathByteStream {
     47     WTF_MAKE_NONCOPYABLE(SVGPathByteStream); WTF_MAKE_FAST_ALLOCATED;
     48 public:
     49     static PassOwnPtr<SVGPathByteStream> create()
     50     {
     51         return adoptPtr(new SVGPathByteStream);
     52     }
     53 
     54     PassOwnPtr<SVGPathByteStream> copy()
     55     {
     56         return adoptPtr(new SVGPathByteStream(m_data));
     57     }
     58 
     59     typedef Vector<unsigned char> Data;
     60     typedef Data::const_iterator DataIterator;
     61 
     62     DataIterator begin() { return m_data.begin(); }
     63     DataIterator end() { return m_data.end(); }
     64     void append(unsigned char byte) { m_data.append(byte); }
     65     void clear() { m_data.clear(); }
     66     bool isEmpty() const { return !m_data.size(); }
     67 
     68 private:
     69     SVGPathByteStream() { }
     70     SVGPathByteStream(Data& data)
     71         : m_data(data)
     72     {
     73     }
     74 
     75     Data m_data;
     76 };
     77 
     78 } // namespace WebCore
     79 
     80 #endif // ENABLE(SVG)
     81 #endif // SVGPathByteStream_h
     82