# Visualization Library

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

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

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    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 #if !defined(ioPNG_INCLUDE_ONCE)
    00033 #define ioPNG_INCLUDE_ONCE
    00034
    00035 #include <vlCore/ResourceLoadWriter.hpp>
    00036 #include <vlCore/ResourceDatabase.hpp>
    00037 #include <vlCore/Image.hpp>
    00038
    00039 namespace vl
    00040 {
    00041   class VirtualFile;
    00042   class String;
    00043   class Image;
    00044
    00045   VLCORE_EXPORT ref<Image> loadPNG(VirtualFile* file);
    00046   VLCORE_EXPORT ref<Image> loadPNG(const String& path);
    00047   VLCORE_EXPORT bool isPNG(VirtualFile* file);
    00048   VLCORE_EXPORT bool savePNG(const Image* src, const String& path, int compression = 6);
    00049   VLCORE_EXPORT bool savePNG(const Image* src, VirtualFile* file, int compression = 6);
    00050
    00051   //---------------------------------------------------------------------------
    00052   // LoadWriterPNG
    00053   //---------------------------------------------------------------------------
    00057   class LoadWriterPNG: public ResourceLoadWriter
    00058   {
    00059   public:
    00060     virtual const char* className() { return "vl::LoadWriterPNG"; }
    00061
    00062     LoadWriterPNG(): ResourceLoadWriter("|png|", "|png|"), mCompression(6)
    00063     {
    00064       VL_DEBUG_SET_OBJECT_NAME()
    00065     }
    00066
    00067     ref<ResourceDatabase> loadResource(const String& path) const
    00068     {
    00069       ref<ResourceDatabase> res_db = new ResourceDatabase;
    00070       ref<Image> img = loadPNG(path);
    00071       if (img)
    00072         res_db->resources().push_back(img);
    00073       return res_db;
    00074     }
    00075
    00076     ref<ResourceDatabase> loadResource(VirtualFile* file) const
    00077     {
    00078       ref<ResourceDatabase> res_db = new ResourceDatabase;
    00079       ref<Image> img = loadPNG(file);
    00080       if (img)
    00081         res_db->resources().push_back(img);
    00082       return res_db;
    00083     }
    00084
    00085     bool writeResource(const String& path, ResourceDatabase* resource) const
    00086     {
    00087       bool ok = true;
    00088       for(unsigned i=0; i<resource->count<Image>(); ++i)
    00089         ok &= savePNG(resource->get<Image>(i), path, compression());
    00090       return ok;
    00091     }
    00092
    00093     bool writeResource(VirtualFile* file, ResourceDatabase* resource) const
    00094     {
    00095       bool ok = true;
    00096       for(unsigned i=0; i<resource->count<Image>(); ++i)
    00097         ok &= savePNG(resource->get<Image>(i), file, compression());
    00098       return ok;
    00099     }
    00100
    00101     int compression() const { return mCompression; }
    00103     void setCompression(int compression) { mCompression = compression; }
    00104
    00105   protected:
    00106     int mCompression;
    00107   };
    00108 }
    00109
    00110 #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.
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