/*
   Copyright (C) 2001-2006, William Joseph.
   All Rights Reserved.

   This file is part of GtkRadiant.

   GtkRadiant is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   GtkRadiant is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with GtkRadiant; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "image.h"

#include "modulesystem.h"
#include "iimage.h"
#include "ifilesystem.h"
#include "iarchive.h"

#include "generic/reference.h"
#include "os/path.h"
#include "stream/stringstream.h"


typedef Modules<_QERPlugImageTable> ImageModules;

ImageModules &Textures_getImageModules();

/// \brief Returns a new image for the first file matching \p name in one of the available texture formats, or 0 if no file is found.
Image *QERApp_LoadImage(void *environment, const char *name)
{
    Image *image = 0;
    class LoadImageVisitor : public ImageModules::Visitor {
        const char *m_name;
        Image *&m_image;
    public:
        LoadImageVisitor(const char *name, Image *&image)
                : m_name(name), m_image(image)
        {
        }

        void visit(const char *name, const _QERPlugImageTable &table) const
        {
            if (m_image == 0) {
                StringOutputStream fullname(256);
                fullname << m_name << '.' << name;
                ArchiveFile *file = GlobalFileSystem().openFile(fullname.c_str());
                if (file != 0) {
                    m_image = table.loadImage(*file);
                    file->release();
                }
            }
        }
    };

    Textures_getImageModules().foreachModule(LoadImageVisitor(name, image));

    return image;
}