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annotate engine/core/util/resource/pool.h @ 697:ecaa4d98f05f tip

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Abstracted the GUI code and refactored the GUIChan-specific code into its own module. * Most of the GUIChan code has been refactored into its own gui/guichan module. However, references to the GuiFont class still persist in the Engine and GuiManager code and these will need further refactoring. * GuiManager is now an abstract base class which specific implementations (e.g. GUIChan) should subclass. * The GUIChan GUI code is now a concrete implementation of GuiManager, most of which is in the new GuiChanGuiManager class. * The GUI code in the Console class has been refactored out of the Console and into the GUIChan module as its own GuiChanConsoleWidget class. The rest of the Console class related to executing commands was left largely unchanged. * Existing client code may need to downcast the GuiManager pointer received from FIFE::Engine::getGuiManager() to GuiChanGuiManager, since not all functionality is represented in the GuiManager abstract base class. Python client code can use the new GuiChanGuiManager.castTo static method for this purpose.
author M. George Hansen <technopolitica@gmail.com>
date Sat, 18 Jun 2011 00:28:40 -1000
parents 5d6b1820b953
children
rev   line source
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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_POOL_H
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23 #define FIFE_POOL_H
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24
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25 // Standard C++ library includes
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26 #include <map>
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27 #include <vector>
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28 #include <string>
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29 #include <iostream>
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30 #include <cassert>
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31
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32 // 3rd party library includes
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33
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34 // FIFE includes
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35 // These includes are split up in two parts, separated by one empty line
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36 // First block: files included from the FIFE root src directory
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37 // Second block: files included from the same folder
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38 #include "resource.h"
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39 #include "resource_location.h"
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41 namespace FIFE {
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42
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43 struct ResourceLocationComparator {
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44 bool operator()(const ResourceLocation* r1, const ResourceLocation* r2) const
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45 {
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46 return r1->operator<(*r2);
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47 }
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48 };
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49
0
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50 class IResource;
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51
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52 enum { RES_LOADED = 0x01, RES_NON_LOADED = 0x02};
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53
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54 /** Pool is used to optimize memory usage for resources
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55 *
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56 * Pool guarantees that there is minimal amount of resources
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57 * used in cases when it is would possible that multiple
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58 * instances of the same data would be loaded into the memory.
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59 * Pool is the owner for resources taking care of their deletion.
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60 */
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61 class Pool {
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62 public:
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63 /** Indicates invalid index for pool
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64 */
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65 static const int INVALID_ID = -1;
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66
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67 /** Default constructor.
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68 * @param name The name used in debug output.
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69 */
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70 Pool(const std::string& name);
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71
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72 /** Destructor.
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73 */
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74 virtual ~Pool();
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75
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76 /** Adds new resource provider. Transfers provider ownership to the pool
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77 */
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78 virtual void addResourceLoader(ResourceLoader* loader);
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80 /** Clear the resource loaders
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81 */
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82 virtual void clearResourceLoaders();
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83
0
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84 /** Adds new resource into the pool using the given location.
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85 * @return The index of the resource in the pool.
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86 */
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87 virtual int addResourceFromLocation(ResourceLocation* loc);
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88
0
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89 /** This is a convenience version of addResourceFromLocation().
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90 * It converts the filename into a ResourceLocation and then
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91 * calls addResourceFromLocation.
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92 *
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93 * @param filename The file to be loaded.
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94 * @return The index of the resource in the pool.
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95 */
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96 virtual int addResourceFromFile(const std::string& filename);
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97
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98 /** Gets resource from pool with given index
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99 *
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100 * @param inc Specifies weither this call will increase the ref counter
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101 */
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102 virtual IResource& get(unsigned int index, bool inc = false);
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103
0
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104 /** Removes the resource from pool if reference counter is null
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105 *
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106 * @param dec Specifies weither the ref counter will be decreased
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107 * before checking
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108 */
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109 virtual void release(unsigned int index, bool dec = false);
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110
148
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111 /** Purge all loaded resources.
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112 * This will purge all loaded resources with a ref count of zero.
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113 * Indices remain valid, though.
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114 * @return Number of resources deleted.
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115 */
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116 virtual int purgeLoadedResources();
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117
0
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118 /** Gets amount of resources in the pool with given status
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119 */
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120 virtual int getResourceCount(int status);
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121
147
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122 /** Prints the cache statistics to the log
0
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123 */
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124 virtual void printStatistics();
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125
147
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126 /** Performs a sanity check for the location map.
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127 */
148
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128 void sanityCheck();
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129
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130 /** Resets the pool.
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131 * This will purge all loaded resources with a ref count of zero.
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132 * The location and loader information for the locations is lost.
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133 * Only the resource loaders are retained.
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134 */
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135 virtual void reset();
147
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136
654
5d6b1820b953 * Added the ability to change screen modes on the fly. This works both in OpenGL and SDL modes.
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137 protected:
0
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138 class PoolEntry {
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139 public:
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140 PoolEntry(): resource(0), location(0), loader(0) {}
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141 ~PoolEntry() {
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142 delete location;
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143 delete resource;
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144 }
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145
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146 // Pointer to the resource that is loaded.
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147 IResource* resource;
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148 // Location of the resource.
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149 ResourceLocation* location;
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150 // Resource loader.
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151 ResourceLoader* loader;
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152 };
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153
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154 void findAndSetProvider(PoolEntry& entry);
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155
0
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156 std::vector<PoolEntry*> m_entries;
156
376b8afc9a18 Fixed a horrendous misconeception in the pool.
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157 typedef std::map<ResourceLocation*, int, ResourceLocationComparator> ResourceLocationToEntry;
100
69a7d40ccf62 added hashing to pool to improve techdemo loading time
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158 ResourceLocationToEntry m_location_to_entry;
0
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159 std::vector<ResourceLoader*> m_loaders;
146
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160 std::string m_name;
0
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161 };
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162
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163 } // FIFE
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164
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165 #endif