# Visualization Library

A lightweight C++ OpenGL middleware for 2D/3D graphics

[Home] [Tutorials] [All Classes] [Grouped Classes]

- Main Page
- Namespaces
- Classes
- Files

- File List
- File Members

# D:/VL/BuildSystem/VL_DISTRO/Visualization_Library_SDK/src/vlCore/MemoryFile.hpp

Go to the documentation of this file.

    00001 /**************************************************************************************/
    00002 /*                                                                                    */
    00003 /*  Visualization Library                                                             */
    00004 /*  http://www.visualizationlibrary.com                                               */
    00005 /*                                                                                    */
    00006 /*  Copyright (c) 2005-2010, Michele Bosi                                             */
    00007 /*  All rights reserved.                                                              */
    00008 /*                                                                                    */
    00009 /*  Redistribution and use in source and binary forms, with or without modification,  */
    00010 /*  are permitted provided that the following conditions are met:                     */
    00011 /*                                                                                    */
    00012 /*  - Redistributions of source code must retain the above copyright notice, this     */
    00013 /*  list of conditions and the following disclaimer.                                  */
    00014 /*                                                                                    */
    00015 /*  - Redistributions in binary form must reproduce the above copyright notice, this  */
    00016 /*  list of conditions and the following disclaimer in the documentation and/or       */
    00017 /*  other materials provided with the distribution.                                   */
    00018 /*                                                                                    */
    00019 /*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND   */
    00020 /*  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED     */
    00021 /*  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE            */
    00022 /*  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR  */
    00023 /*  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES    */
    00024 /*  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;      */
    00025 /*  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON    */
    00026 /*  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT           */
    00027 /*  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS     */
    00028 /*  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.                      */
    00029 /*                                                                                    */
    00030 /**************************************************************************************/
    00031
    00032 #ifndef MemoryFile_INCLUDE_ONCE
    00033 #define MemoryFile_INCLUDE_ONCE
    00034
    00035 #include <vlCore/VirtualFile.hpp>
    00036 #include <vlCore/Buffer.hpp>
    00037
    00038 namespace vl
    00039 {
    00040 //---------------------------------------------------------------------------
    00041 // MemoryFile
    00042 //---------------------------------------------------------------------------
    00056   class VLCORE_EXPORT MemoryFile: public VirtualFile
    00057   {
    00058   public:
    00059     virtual const char* className() { return "vl::MemoryFile"; }
    00060
    00061     MemoryFile();
    00062
    00063     const Buffer* buffer() const { return mBuffer.get(); }
    00064
    00065     Buffer* buffer() { return mBuffer.get(); }
    00066
    00068     void setBuffer(Buffer* buffer) { mBuffer = buffer; }
    00069
    00070     unsigned char* ptr() { return mBuffer->ptr(); }
    00071
    00073     virtual bool exists() const { return true; }
    00074
    00075     virtual bool open(EOpenMode mode);
    00076
    00077     virtual bool isOpen() const { return mIsOpen; }
    00078
    00079     virtual void close() { mPtr = 0; mIsOpen = false; }
    00080
    00081     void allocateBuffer(long long byte_count) { mBuffer->resize((int)byte_count); }
    00082
    00083     virtual long long size() const { return mBuffer->bytesUsed(); }
    00084
    00086     void copy(VirtualFile* file);
    00087
    00088     MemoryFile& operator=(const MemoryFile& other) { close(); VirtualFile::operator=(other); mBuffer = other.mBuffer; return *this; }
    00089
    00090     ref<VirtualFile> clone() const;
    00091
    00092   protected:
    00093     virtual long long position_Implementation() const;
    00094
    00095     virtual long long read_Implementation(void* buffer, long long byte_count);
    00096
    00097     virtual long long write_Implementation(const void* /*buffer*/, long long /*byte_count*/) { return 0; } // not supported yet
    00098
    00099     virtual bool seekSet_Implementation(long long offset);
    00100
    00101   protected:
    00102     ref<Buffer> mBuffer;
    00103     long long mPtr;
    00104     bool mIsOpen;
    00105   };
    00106 }
    00107
    00108 #endif

Visualization Library v2011.05.1142 Reference Documentation
Copyright 2005-2011 Michele Bosi. All rights reserved.
Updated on Thu May 26 2011 22:51:21.
Permission is granted to use this page to write and publish articles regarding Visualization Library.