Mercurial > fife-parpg

annotate engine/core/util/resource/resource_ptr.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 6e7d228def30
children
rev   line source
150
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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_PTR_H
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23 #define FIFE_RESOURE_PTR_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.h"
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34 #include "pool.h"
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35
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36 namespace FIFE {
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37
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38 /** A lazy loading resource.
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39 */
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40 class ResourcePtr {
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41 public:
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42 ResourcePtr(IResource* ptr = 0) : m_ptr(ptr),m_pool(0),m_index(Pool::INVALID_ID) {
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43 if( m_ptr )
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44 m_ptr->addRef();
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45 }
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46
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47 ResourcePtr(Pool* pool,int index) : m_ptr(0),m_pool(pool),m_index(index) {
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48 }
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49
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50 ResourcePtr(const ResourcePtr& r)
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51 : m_ptr(r.m_ptr),m_pool(r.m_pool),m_index(r.m_index) {
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52 if(m_ptr) {
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53 m_ptr->addRef();
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54 }
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55 }
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56
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57 ResourcePtr& operator=(const ResourcePtr& r) {
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58 if( this == &r )
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59 return *this;
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60 release();
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61 m_ptr = r.m_ptr;
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62 m_pool = r.m_pool;
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63 m_index = r.m_index;
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64 if(m_ptr) {
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65 m_ptr->addRef();
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66 }
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67 return *this;
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68 }
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69
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70 ~ResourcePtr() {
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71 release();
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72 }
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73
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74 IResource& operator->() {
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75 load();
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76 return *m_ptr;
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77 }
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78
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79 const IResource& operator->() const {
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80 constLoad();
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81 return *m_ptr;
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82 }
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83
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84 operator bool() const {
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85 return isValid();
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86 }
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87
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88 bool isValid() const {
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89 return m_ptr || isLoadable();
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90 }
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91
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92 bool isLoadable() const {
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93 return m_pool && m_index != Pool::INVALID_ID;
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94 }
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95
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96 bool operator==(const ResourcePtr& r) const {
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97 if( isLoadable() && r.isLoadable() )
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98 return m_index == r.m_index && m_pool == r.m_pool;
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99 if( !isLoadable() && !r.isLoadable() )
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100 return m_ptr == r.m_ptr;
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101 return false;
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102 }
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103
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104 bool operator<(const ResourcePtr& r) const {
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105 if( isLoadable() && r.isLoadable() )
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106 {
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107 if( m_pool == r.m_pool )
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108 return m_index < r.m_index;
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109 return m_pool < r.m_pool;
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110 }
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111 if( !isLoadable() && !r.isLoadable() )
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112 return m_ptr < r.m_ptr;
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113 return isLoadable() < r.isLoadable();
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114 }
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115
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116 void release() {
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117 if(m_ptr) {
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118 m_ptr->decRef();
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119 }
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120 m_ptr = 0;
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121 }
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122
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123 void load() {
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124 constLoad();
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125 }
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126
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127 void unload() {
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128 release();
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129 if( isLoadable() ) {
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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130 m_pool->release(m_index);
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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131 }
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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132 }
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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133
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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134 template<class T>
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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135 T* get() {
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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136 if( isValid() )
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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137 load();
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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138 return dynamic_cast<T*>(m_ptr);
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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139 }
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140
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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141 private:
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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142 void constLoad() const {
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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143 if( m_ptr )
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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144 return;
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145 m_ptr = &m_pool->get(m_index);
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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146 m_ptr->addRef();
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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147 }
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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148 mutable IResource* m_ptr;
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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149 Pool* m_pool;
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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150 int m_index;
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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151 };
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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152 }
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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153 #endif
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154