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1 /* |
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2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Group of textures. |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 |
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21 #include "alf/alftexturegroup.h" |
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22 #include "alf/alfenv.h" |
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23 #include "alf/alftexture.h" |
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24 |
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25 |
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26 NONSHARABLE_CLASS( CAlfInternalTextureLoadObserver ) : public CBase, public MAlfTextureLoadingCompletedObserver |
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27 { |
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28 public: |
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29 |
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30 /** |
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31 * Static factory method. |
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32 * @param aEnv Environment |
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33 */ |
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34 static CAlfInternalTextureLoadObserver* NewL(CAlfTextureGroup& aTextureGroup); |
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35 |
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36 /** |
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37 * Static factory method. |
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38 * @param aEnv Environment |
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39 */ |
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40 static CAlfInternalTextureLoadObserver* NewLC(CAlfTextureGroup& aTextureGroup); |
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41 |
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42 /** |
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43 * Destructor |
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44 */ |
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45 virtual ~CAlfInternalTextureLoadObserver(); |
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46 |
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47 /** |
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48 * From MAlfTextureLoadingCompletedObserver |
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49 */ |
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50 void TextureLoadingCompleted(CAlfTexture& aTexture, |
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51 TInt aTextureId, |
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52 TInt aErrorCode); |
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53 |
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54 private: |
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55 |
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56 /** |
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57 * Constructor. |
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58 */ |
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59 CAlfInternalTextureLoadObserver(); |
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60 |
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61 /** |
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62 * Constructor. |
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63 */ |
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64 void ConstructL(CAlfTextureGroup& aTextureGroup); |
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65 |
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66 private: |
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67 |
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68 CAlfTextureGroup* iTextureGroup; // Not owned |
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69 }; |
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70 |
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71 // Private structure |
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72 struct CAlfTextureGroup::TPrivateData |
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73 { |
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74 /** Environment */ |
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75 CAlfEnv* iEnv; |
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76 |
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77 /** Queue of texture group loading observers. */ |
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78 RPointerArray<MAlfTextureGroupLoadingCompletedObserver> iLoadObserverQueue; |
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79 |
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80 /** Queue of textures of this group. Textures are not owned by this class */ |
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81 RPointerArray<CAlfTexture> iTextures; |
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82 |
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83 /** Error */ |
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84 TInt iError; |
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85 |
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86 /** Flag to enable/disable observing notifications */ |
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87 TBool iObservingNotificationsEnabled; |
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88 |
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89 /** Observer for texture laodings */ |
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90 CAlfInternalTextureLoadObserver* iTextureLoadObserver; |
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91 }; |
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92 |
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93 |
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94 |
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95 |
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96 // ======== MEMBER FUNCTIONS ======== |
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97 |
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98 // --------------------------------------------------------------------------- |
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99 // Constructor |
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100 // --------------------------------------------------------------------------- |
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101 // |
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102 EXPORT_C CAlfTextureGroup::CAlfTextureGroup() |
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103 { |
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104 |
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105 } |
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106 |
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107 // --------------------------------------------------------------------------- |
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108 // Destructor |
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109 // --------------------------------------------------------------------------- |
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110 // |
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111 EXPORT_C CAlfTextureGroup::~CAlfTextureGroup() |
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112 { |
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113 while (Count()) |
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114 { |
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115 RemoveTexture(Texture(Count()-1)); |
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116 } |
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117 |
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118 if ( iData ) |
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119 { |
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120 iData->iLoadObserverQueue.Close(); |
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121 iData->iTextures.Close(); |
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122 |
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123 delete iData->iTextureLoadObserver; |
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124 iData->iTextureLoadObserver = NULL; |
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125 } |
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126 |
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127 delete iData; |
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128 } |
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129 // --------------------------------------------------------------------------- |
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130 // NewL |
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131 // --------------------------------------------------------------------------- |
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132 // |
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133 EXPORT_C CAlfTextureGroup* CAlfTextureGroup::NewL(CAlfEnv& aEnv) |
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134 { |
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135 CAlfTextureGroup* self = CAlfTextureGroup::NewLC(aEnv); |
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136 CleanupStack::Pop( self ); |
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137 return self; |
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138 } |
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139 |
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140 |
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141 // --------------------------------------------------------------------------- |
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142 // NewLC |
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143 // --------------------------------------------------------------------------- |
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144 // |
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145 EXPORT_C CAlfTextureGroup* CAlfTextureGroup::NewLC(CAlfEnv& aEnv) |
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146 { |
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147 CAlfTextureGroup* self = new( ELeave ) CAlfTextureGroup(); |
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148 CleanupStack::PushL( self ); |
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149 self->ConstructL(aEnv); |
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150 return self; |
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151 } |
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152 |
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153 // --------------------------------------------------------------------------- |
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154 // 2nd phase constructor |
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155 // --------------------------------------------------------------------------- |
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156 // |
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157 EXPORT_C void CAlfTextureGroup::ConstructL(CAlfEnv& aEnv) |
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158 { |
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159 iData = new (ELeave) TPrivateData; |
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160 // Zero all data |
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161 iData->iEnv = &aEnv; |
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162 iData->iError = KErrNone; |
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163 iData->iObservingNotificationsEnabled = ETrue; |
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164 iData->iTextureLoadObserver = NULL; |
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165 |
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166 iData->iTextureLoadObserver = CAlfInternalTextureLoadObserver::NewL(*this); |
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167 } |
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168 |
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169 // --------------------------------------------------------------------------- |
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170 // |
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171 // --------------------------------------------------------------------------- |
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172 // |
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173 EXPORT_C void CAlfTextureGroup::AddTextureL(CAlfTexture& aTexture) |
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174 { |
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175 if (!IsTextureInGroup(aTexture)) |
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176 { |
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177 TBool addLoadObserver = ETrue; |
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178 for(TInt i = 0; i < Count(); i++) |
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179 { |
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180 if (iData->iTextures[i]->TextureManager() == aTexture.TextureManager()) |
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181 { |
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182 addLoadObserver = EFalse; |
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183 break; |
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184 } |
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185 } |
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186 |
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187 iData->iTextures.Append(&aTexture); |
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188 |
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189 if (addLoadObserver) |
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190 { |
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191 RegisterAsTextureLoadObserverL(aTexture.TextureManager()); |
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192 } |
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193 } |
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194 } |
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195 |
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196 // --------------------------------------------------------------------------- |
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197 // |
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198 // --------------------------------------------------------------------------- |
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199 // |
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200 EXPORT_C void CAlfTextureGroup::RemoveTexture(CAlfTexture& aTexture) |
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201 { |
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202 if (IsTextureInGroup(aTexture)) |
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203 { |
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204 for(TInt i = 0; i < Count(); i++) |
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205 { |
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206 if (iData->iTextures[i] == &aTexture) |
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207 { |
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208 iData->iTextures.Remove(i); |
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209 iData->iTextures.Compress(); |
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210 break; |
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211 } |
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212 } |
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213 |
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214 TBool removeLoadObserver = ETrue; |
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215 for(TInt i = 0; i < Count(); i++) |
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216 { |
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217 if (iData->iTextures[i]->TextureManager() == aTexture.TextureManager()) |
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218 { |
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219 removeLoadObserver = EFalse; |
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220 break; |
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221 } |
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222 } |
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223 |
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224 if (removeLoadObserver) |
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225 { |
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226 UnRegisterAsTextureLoadObserver(aTexture.TextureManager()); |
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227 } |
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228 } |
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229 } |
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230 |
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231 // --------------------------------------------------------------------------- |
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232 // |
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233 // --------------------------------------------------------------------------- |
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234 // |
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235 EXPORT_C TBool CAlfTextureGroup::IsLoadingCompleted() const |
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236 { |
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237 for (TInt i=0; i<Count();i++) |
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238 { |
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239 if ((Texture(i).Size() == TSize(0,0)) || !Texture(i).HasContent()) |
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240 { |
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241 return EFalse; |
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242 } |
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243 } |
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244 |
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245 if (Count() == 0) |
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246 { |
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247 return EFalse; |
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248 } |
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249 |
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250 return ETrue; |
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251 } |
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252 |
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253 // --------------------------------------------------------------------------- |
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254 // |
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255 // --------------------------------------------------------------------------- |
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256 // |
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257 EXPORT_C TInt CAlfTextureGroup::Count() const |
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258 { |
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259 return iData->iTextures.Count(); |
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260 } |
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261 |
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262 // --------------------------------------------------------------------------- |
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263 // |
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264 // --------------------------------------------------------------------------- |
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265 // |
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266 EXPORT_C CAlfTexture& CAlfTextureGroup::Texture( TInt aIndex ) const |
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267 { |
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268 return *iData->iTextures[aIndex]; |
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269 } |
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270 |
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271 // --------------------------------------------------------------------------- |
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272 // |
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273 // --------------------------------------------------------------------------- |
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274 // |
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275 EXPORT_C void CAlfTextureGroup::AddLoadObserverL(MAlfTextureGroupLoadingCompletedObserver& aObserver) |
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276 { |
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277 iData->iLoadObserverQueue.Append(&aObserver); |
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278 } |
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279 |
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280 // --------------------------------------------------------------------------- |
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281 // |
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282 // --------------------------------------------------------------------------- |
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283 // |
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284 EXPORT_C void CAlfTextureGroup::RemoveLoadObserver(MAlfTextureGroupLoadingCompletedObserver& aObserver) |
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285 { |
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286 TInt count = iData->iLoadObserverQueue.Count(); |
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287 for(TInt i = 0; i < count; i++) |
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288 { |
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289 if (iData->iLoadObserverQueue[i] == &aObserver) |
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290 { |
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291 iData->iLoadObserverQueue.Remove(i); |
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292 iData->iLoadObserverQueue.Compress(); |
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293 break; |
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294 } |
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295 } |
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296 } |
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297 |
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298 // --------------------------------------------------------------------------- |
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299 // |
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300 // --------------------------------------------------------------------------- |
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301 // |
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302 EXPORT_C void CAlfTextureGroup::EnableLoadObservers(TBool aEnable) |
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303 { |
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304 iData->iObservingNotificationsEnabled = aEnable; |
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305 } |
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306 |
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307 |
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308 // --------------------------------------------------------------------------- |
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309 // |
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310 // --------------------------------------------------------------------------- |
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311 // |
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312 void CAlfTextureGroup::NotifyTextureAvailability(CAlfTexture& aTexture, |
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313 TInt aErrorCode) |
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314 { |
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315 if (IsTextureInGroup(aTexture)) |
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316 { |
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317 if (aErrorCode != KErrNone) |
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318 { |
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319 iData->iError = aErrorCode; |
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320 } |
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321 |
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322 if (IsLoadingCompleted() && iData->iObservingNotificationsEnabled) |
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323 { |
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324 NotifyObservers(); |
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325 } |
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326 } |
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327 } |
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328 |
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329 // --------------------------------------------------------------------------- |
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330 // |
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331 // --------------------------------------------------------------------------- |
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332 // |
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333 TBool CAlfTextureGroup::IsTextureInGroup(CAlfTexture& aTexture) const |
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334 { |
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335 TInt count = iData->iTextures.Count(); |
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336 for(TInt i = 0; i < Count(); i++) |
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337 { |
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338 if (iData->iTextures[i] == &aTexture) |
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339 { |
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340 return ETrue; |
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341 } |
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342 } |
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343 return EFalse; |
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344 } |
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345 |
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346 |
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347 // --------------------------------------------------------------------------- |
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348 // |
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349 // --------------------------------------------------------------------------- |
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350 // |
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351 void CAlfTextureGroup::NotifyObservers() |
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352 { |
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353 TInt count = iData->iLoadObserverQueue.Count(); |
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354 for(TInt i = 0; i < count; i++) |
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355 { |
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356 iData->iLoadObserverQueue[i]->TextureGroupLoadingCompleted(*this,iData->iError); |
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357 } |
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358 } |
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359 |
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360 // --------------------------------------------------------------------------- |
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361 // |
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362 // --------------------------------------------------------------------------- |
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363 // |
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364 void CAlfTextureGroup::RegisterAsTextureLoadObserverL(CAlfTextureManager* aManager) |
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365 { |
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366 if (aManager) |
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367 { |
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368 aManager->AddLoadObserverL(iData->iTextureLoadObserver); |
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369 } |
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370 } |
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371 |
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372 // --------------------------------------------------------------------------- |
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373 // |
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374 // --------------------------------------------------------------------------- |
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375 // |
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376 void CAlfTextureGroup::UnRegisterAsTextureLoadObserver(CAlfTextureManager* aManager) |
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377 { |
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378 if (aManager) |
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379 { |
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380 aManager->RemoveLoadObserver(iData->iTextureLoadObserver); |
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381 } |
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382 } |
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383 |
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384 |
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385 |
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386 // --------------------------------------------------------------------------- |
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387 // |
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388 // --------------------------------------------------------------------------- |
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389 // |
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390 CAlfInternalTextureLoadObserver* CAlfInternalTextureLoadObserver::NewL(CAlfTextureGroup& aTextureGroup) |
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391 { |
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392 CAlfInternalTextureLoadObserver* self = CAlfInternalTextureLoadObserver::NewLC(aTextureGroup); |
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393 CleanupStack::Pop( self ); |
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394 return self; |
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395 } |
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396 |
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397 // --------------------------------------------------------------------------- |
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398 // |
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399 // --------------------------------------------------------------------------- |
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400 // |
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401 CAlfInternalTextureLoadObserver* CAlfInternalTextureLoadObserver::NewLC(CAlfTextureGroup& aTextureGroup) |
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402 { |
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403 CAlfInternalTextureLoadObserver* self = new( ELeave ) CAlfInternalTextureLoadObserver(); |
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404 CleanupStack::PushL( self ); |
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405 self->ConstructL(aTextureGroup); |
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406 return self; |
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407 } |
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408 |
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409 // --------------------------------------------------------------------------- |
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410 // |
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411 // --------------------------------------------------------------------------- |
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412 // |
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413 CAlfInternalTextureLoadObserver::~CAlfInternalTextureLoadObserver() |
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414 { |
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415 } |
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416 |
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417 // --------------------------------------------------------------------------- |
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418 // |
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419 // --------------------------------------------------------------------------- |
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420 // |
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421 CAlfInternalTextureLoadObserver::CAlfInternalTextureLoadObserver() |
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422 { |
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423 } |
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424 |
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425 // --------------------------------------------------------------------------- |
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426 // |
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427 // --------------------------------------------------------------------------- |
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428 // |
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429 void CAlfInternalTextureLoadObserver::ConstructL(CAlfTextureGroup& aTextureGroup) |
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430 { |
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431 iTextureGroup = &aTextureGroup; |
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432 } |
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433 |
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434 // --------------------------------------------------------------------------- |
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435 // |
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436 // --------------------------------------------------------------------------- |
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437 // |
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438 void CAlfInternalTextureLoadObserver::TextureLoadingCompleted(CAlfTexture& aTexture, |
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439 TInt /*aTextureId*/, |
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440 TInt aErrorCode) |
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441 { |
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442 iTextureGroup->NotifyTextureAvailability(aTexture, aErrorCode); |
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443 } |
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444 |