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annotate engine/core/util/resource/resource.h @ 684:4f36c890b1dd

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* Merged the 0.3.3dev branche changes to the trunk.
author helios2000@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 06 Dec 2010 19:25:27 +0000
parents 90005975cdbb
children
rev   line source
0
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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14 * Lesser General Public License for more details. *
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 #ifndef FIFE_RESOURE_H
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23 #define FIFE_RESOURE_H
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24
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25 // Standard C++ library includes
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26
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27 // 3rd party library includes
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28
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29 // FIFE includes
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30 // These includes are split up in two parts, separated by one empty line
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31 // First block: files included from the FIFE root src directory
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32 // Second block: files included from the same folder
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33 #include "resource_location.h"
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34
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35 namespace FIFE {
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36
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37 class IReferenceCounted {
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38 public:
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39 virtual ~IReferenceCounted() { }
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40
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41 /** Calling this method marks resource be used by some resource client.
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42 * It adds one to resource counter that is kept up by the resource itself.
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43 * When resource is about to be deleted (e.g. due to pooling algorithms),
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44 * reference counter is inspected. In case value is non-zero, resource
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45 * shouldn't be deleted.
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46 */
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47 virtual void addRef() = 0;
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48
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49 /** Calling this method unmarks resource be used by a resource client.
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50 * @see addRef
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51 */
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52 virtual void decRef() = 0;
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53
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54 /** Gets the current reference count
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55 * @see addRef
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56 */
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57 virtual unsigned int getRefCount() = 0;
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58 };
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59
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60 /** IResource is the internal representation of a loaded file.
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61 * One resource is always associated with one file (resource location).
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62 */
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63 class IResource: public virtual IReferenceCounted {
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64 public:
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65 virtual ~IResource() { }
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66
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67 /** Get the location/file of this resource.
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68 */
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69 virtual const ResourceLocation& getResourceLocation() = 0;
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70 virtual const std::string& getResourceFile() = 0;
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71
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72 /** Change the location/file of this resource.
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73 */
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74 virtual void setResourceLocation(const ResourceLocation& location) = 0;
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75 virtual void setResourceFile(const std::string& filename) = 0;
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76
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77 /** returns -1 if not pooled, otherwise its a valid id
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78 */
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79 virtual int getPoolId() = 0;
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80 virtual void setPoolId(int poolid) = 0;
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81 };
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82
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83 /** ResourceLoader defines a class for loading resources. The resource returned is owned by
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84 * the caller, and must be deleted when finished.
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85 * In case allocation fails, or loader cannot load given location, NULL is returned
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86 */
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87 class ResourceLoader {
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88 public:
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89 virtual ~ResourceLoader() { };
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90 virtual IResource* loadResource(const ResourceLocation& location) = 0;
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91 };
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92
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93 /** ResourceSaver defines a class for saving Resources.
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94 */
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95 class ResourceSaver {
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96 public:
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97 virtual ~ResourceSaver() { };
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98
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99 virtual void save(const ResourceLocation& location, IResource* resource) = 0;
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100 virtual void save(const std::string& filename, IResource* resource) { save(ResourceLocation(filename), resource); }
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101 };
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102 }
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103
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104 #endif