resource.cpp

这是一款2d游戏引擎

/*  $Id: resource.cpp,v 1.26 2003/09/03 22:58:17 mbn Exp $
**
**  ClanLib Game SDK
**  Copyright (C) 2003  The ClanLib Team
**  For a total list of contributers see the file CREDITS.
**
**  This library is free software; you can redistribute it and/or
**  modify it under the terms of the GNU Lesser General Public
**  License as published by the Free Software Foundation; either
**  version 2.1 of the License, or (at your option) any later version.
**
**  This library 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
**  Lesser General Public License for more details.
**
**  You should have received a copy of the GNU Lesser General Public
**  License along with this library; if not, write to the Free Software
**  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
**
*/

#include "Core/precomp.h"
#include "API/Core/Resources/resource.h"
#include "API/Core/Resources/resourcedata.h"
#include "API/Core/Resources/resource_manager.h"
#include "API/Core/System/cl_assert.h"
#include "Core/Resources/resource_manager_generic.h"
#include "resource_generic.h"
#include <ctype.h>
#include <algorithm>

/////////////////////////////////////////////////////////////////////////////
// CL_Resource construction:

CL_Resource::CL_Resource(
	CL_DomElement &element,
	CL_ResourceManager *manager)
: impl(0)
{
//	std::string lower_name = name;
//	std::transform(lower_name.begin(), lower_name.end(), lower_name.begin(), tolower);

	impl = new CL_Resource_Generic(element, manager->impl);
	impl->add_ref();
}

CL_Resource::CL_Resource(const CL_Resource &copy)
: impl(NULL)
{
	impl = copy.impl;
	if (impl) impl->add_ref();
}

CL_Resource::CL_Resource(CL_Resource_Generic *impl)
: impl(impl)
{
	if (impl) impl->add_ref();
}

CL_Resource::CL_Resource()
: impl(NULL)
{
}

CL_Resource::~CL_Resource()
{
	if (impl) impl->release_ref();
}

/////////////////////////////////////////////////////////////////////////////
// CL_Resource attributes:

std::string CL_Resource::get_type() const
{
	if (!impl) return 0;
	return impl->element.get_tag_name();
}

std::string CL_Resource::get_name() const
{
	if (!impl) return 0;
	return impl->element.get_attribute("name");
}
/*
std::string CL_Resource::get_full_location() const
{
	CL_InputSourceProvider *provider = (CL_InputSourceProvider *) impl->manager->get_resource_provider();
	return provider->get_path(get_location().c_str());
}
*/

CL_DomElement &CL_Resource::get_element()
{
	if (!impl)
	{
		static CL_DomElement null;
		return null;
	}
	return impl->element;
}

CL_ResourceManager CL_Resource::get_manager()
{
	return CL_ResourceManager(impl->manager);
}

CL_ResourceData *CL_Resource::get_data(const std::string &name)
{
	if (!impl) return 0;
	return impl->datas[name];
}

int CL_Resource::get_reference_count() const
{
	if (!impl) return 0;
	return impl->load_ref;
}

/////////////////////////////////////////////////////////////////////////////
// CL_Resource operations:

void CL_Resource::operator = (const CL_Resource &copy)
{
	if (impl) impl->release_ref();
	impl = copy.impl;
	if (impl) impl->add_ref();
}

void CL_Resource::attach_data(const std::string &name, CL_ResourceData *data)
{
	impl->datas[name] = data;
}

void CL_Resource::detach_data(CL_ResourceData *data)
{
	std::map<std::string, CL_ResourceData *>::iterator it;
	for (it = impl->datas.begin(); it != impl->datas.end(); it++)
	{
		if (it->second == data)
		{
			impl->datas.erase(it);
			break;
		}
	}
}

void CL_Resource::unload()
{
	if (!impl) return;
	if (impl->manager == 0) return;

	impl->load_ref--;
	cl_assert(impl->load_ref >= 0);
	if (impl->load_ref == 0)
	{
		std::map<std::string, CL_ResourceData*>::iterator it;
		for (it = impl->datas.begin(); it != impl->datas.end(); ++it)
		{
			CL_ResourceData *data = it->second;
			data->on_unload();
		}
	}
}

void CL_Resource::load()
{
	if (!impl) return;
	if (impl->manager == 0) return;

	impl->load_ref++;
	if (impl->load_ref == 1)
	{
		std::map<std::string, CL_ResourceData*>::iterator it;
		for (it = impl->datas.begin(); it != impl->datas.end(); ++it)
		{
			CL_ResourceData *data = it->second;
			data->on_load();
		}
	}
}

/////////////////////////////////////////////////////////////////////////////
// CL_Resource implementation: