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1 /* |
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2 * Copyright (c) 2008-2009 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 : Class defination for preview thumbnail in list view |
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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 #include <mglxmedialist.h> |
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20 #include <glxthumbnailcontext.h> |
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21 #include <glxfilterfactory.h> // For TGlxFilterFactory |
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22 #include <glxthumbnailattributeinfo.h> |
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23 #include "glxpreviewthumbnailbinding.h" |
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24 #include "glxgeneraluiutilities.h" |
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25 #include <glxuiutility.h> // For UiUtility instance |
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26 |
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27 #include <glxtracer.h> |
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28 #include <glxlog.h> |
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29 |
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30 #include <glxuistd.h> // Fetch context priority def'ns |
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31 |
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32 const TInt KInitialThumbnailsTimeDelay(100000); |
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33 const TInt KWaitCount(5); |
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34 const TInt KThumbnailStartTimeDelay(2000000); |
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35 const TInt KThumbnailIntervalTimeDelay(2000000); |
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36 const TInt KPreviewThumbnailFetchCount(18); |
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37 |
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38 // ---------------------------------------------------------------------------- |
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39 // NewL |
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40 // ---------------------------------------------------------------------------- |
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41 // |
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42 CGlxPreviewThumbnailBinding* CGlxPreviewThumbnailBinding::NewL( |
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43 MPreviewTNObserver& aObserver) |
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44 { |
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45 TRACER("CGlxPreviewThumbnailBinding::NewL"); |
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46 CGlxPreviewThumbnailBinding* self = CGlxPreviewThumbnailBinding::NewLC(aObserver); |
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47 CleanupStack::Pop(self); |
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48 return self; |
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49 } |
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50 |
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51 // ---------------------------------------------------------------------------- |
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52 // NewLC |
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53 // ---------------------------------------------------------------------------- |
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54 // |
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55 CGlxPreviewThumbnailBinding* CGlxPreviewThumbnailBinding::NewLC( |
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56 MPreviewTNObserver& aObserver) |
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57 { |
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58 TRACER("CGlxPreviewThumbnailBinding::NewLC"); |
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59 CGlxPreviewThumbnailBinding* self = new(ELeave)CGlxPreviewThumbnailBinding(aObserver); |
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60 CleanupStack::PushL(self); |
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61 self->ConstructL(); |
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62 return self; |
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63 } |
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64 |
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65 // ---------------------------------------------------------------------------- |
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66 // Constructor |
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67 // ---------------------------------------------------------------------------- |
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68 // |
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69 CGlxPreviewThumbnailBinding::CGlxPreviewThumbnailBinding( |
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70 MPreviewTNObserver& aObserver) |
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71 : iObserver(aObserver) |
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72 { |
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73 } |
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74 |
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75 // ---------------------------------------------------------------------------- |
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76 // ConstructL |
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77 // ---------------------------------------------------------------------------- |
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78 // |
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79 void CGlxPreviewThumbnailBinding::ConstructL() |
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80 { |
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81 TRACER("CGlxPreviewThumbnailBinding::ConstructL"); |
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82 iTimer = CPeriodic::NewL( CActive::EPriorityStandard ); |
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83 CGlxUiUtility* uiUtility = CGlxUiUtility::UtilityL(); |
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84 iGridIconSize = uiUtility->GetGridIconSize(); |
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85 uiUtility->Close() ; |
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86 } |
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87 |
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88 |
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89 // ---------------------------------------------------------------------------- |
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90 // Destructor |
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91 // ---------------------------------------------------------------------------- |
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92 // |
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93 CGlxPreviewThumbnailBinding::~CGlxPreviewThumbnailBinding() |
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94 { |
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95 TRACER("CGlxPreviewThumbnailBinding::~CGlxPreviewThumbnailBinding"); |
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96 // close any medialist that exist |
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97 if( iMediaList ) |
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98 { |
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99 iMediaList->RemoveMediaListObserver( this ); |
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100 iMediaList->RemoveContext(iThumbnailContext); |
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101 delete iThumbnailContext; |
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102 iMediaList->Close(); |
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103 iMediaList = NULL; |
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104 } |
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105 |
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106 // cancel any outstanding request of the timer |
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107 if(iTimer->IsActive()) |
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108 { |
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109 iTimer->Cancel(); |
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110 } |
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111 delete iTimer; |
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112 iTimer = NULL; |
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113 iPreviewItemCount.Close(); |
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114 } |
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115 |
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116 // ---------------------------------------------------------------------------- |
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117 // TimerTickedL: we need to update only when required i.e, when the thumbnail count |
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118 // has not reached till the max limit to be shown |
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119 // ---------------------------------------------------------------------------- |
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120 // |
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121 void CGlxPreviewThumbnailBinding::TimerTickedL() |
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122 { |
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123 TRACER("CGlxPreviewThumbnailBinding::TimerTickedL"); |
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124 |
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125 if(iMediaList && iMediaList->Count() && iPreviewItemCount.Count() ) |
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126 { |
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127 TInt thumbnailIndex = iPreviewItemCount[iProgressIndex]; |
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128 if(thumbnailIndex < iMediaList->Count()) |
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129 { |
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130 const TGlxMedia& item = iMediaList->Item(thumbnailIndex); |
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131 TMPXAttribute thumbnailAttribute(KGlxMediaIdThumbnail, |
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132 GlxFullThumbnailAttributeId( ETrue, iGridIconSize.iWidth, |
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133 iGridIconSize.iHeight ) ); |
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134 |
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135 const CGlxThumbnailAttribute* value = item.ThumbnailAttribute( |
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136 thumbnailAttribute ); |
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137 if (value) |
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138 { |
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139 CFbsBitmap* bitmap = new (ELeave) CFbsBitmap; |
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140 bitmap->Duplicate( value->iBitmap->Handle()); |
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141 iObserver.PreviewTNReadyL(bitmap, NULL,iProgressIndex); |
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142 iProgressIndex++; |
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143 if (iProgressIndex >= KPreviewThumbnailFetchCount || |
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144 iProgressIndex >= iPreviewItemCount.Count() || |
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145 iProgressIndex >= iMediaList->Count()) |
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146 { |
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147 iProgressIndex = 0; |
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148 } |
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149 } |
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150 } |
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151 } |
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152 else if (iPopulateListTNs && iMediaList && iMediaList->Count() == 0) |
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153 { |
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154 if (iTrial == KWaitCount) |
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155 { |
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156 iObserver.PreviewTNReadyL(NULL, NULL, KErrNotFound); |
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157 iTrial=0; |
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158 return; |
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159 } |
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160 iTrial++; |
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161 } |
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162 else if(iMediaList && iMediaList->Count() ) |
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163 { |
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164 if(iProgressIndex > iMediaList->Count()-1 ) |
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165 { |
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166 iProgressIndex = 0; |
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167 } |
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168 const TGlxMedia& item = iMediaList->Item(iProgressIndex); |
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169 TMPXAttribute thumbnailAttribute(KGlxMediaIdThumbnail, |
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170 GlxFullThumbnailAttributeId( ETrue, iGridIconSize.iWidth, |
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171 iGridIconSize.iHeight ) ); |
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172 |
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173 const CGlxThumbnailAttribute* value = item.ThumbnailAttribute( |
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174 thumbnailAttribute ); |
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175 if (value) |
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176 { |
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177 CFbsBitmap* bitmap = new (ELeave) CFbsBitmap; |
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178 bitmap->Duplicate( value->iBitmap->Handle()); |
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179 iObserver.PreviewTNReadyL(bitmap, NULL,iProgressIndex); |
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180 iProgressIndex++; |
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181 if (iProgressIndex >= KPreviewThumbnailFetchCount || |
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182 iProgressIndex >= iMediaList->Count()) |
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183 { |
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184 iProgressIndex = 0; |
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185 } |
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186 } |
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187 else |
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188 { |
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189 if (iTrialCount == KWaitCount) |
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190 { |
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191 iObserver.PreviewTNReadyL(NULL, NULL, KErrNotFound); |
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192 iTrialCount=0; |
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193 return; |
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194 } |
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195 iTrialCount++; |
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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 // IsTimeL callback function invoked when timer expires |
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201 // ---------------------------------------------------------------------------- |
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202 // |
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203 TInt CGlxPreviewThumbnailBinding::IsTimeL( TAny* aSelf ) |
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204 { |
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205 TRACER("CGlxPreviewThumbnailBinding::IsTimeL"); |
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206 if (aSelf) |
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207 { |
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208 TRACER("CGlxPreviewThumbnailBinding::IsTimeL"); |
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209 CGlxPreviewThumbnailBinding* self = static_cast<CGlxPreviewThumbnailBinding*>(aSelf); |
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210 if(self) |
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211 { |
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212 self->TimerTickedL(); |
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213 } |
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214 } |
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215 return KErrNone; |
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216 } |
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217 |
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218 |
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219 // ---------------------------------------------------------------------------- |
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220 // HandleItemChangedL |
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221 // This function basically closes the old medialist if any for ex. Tags, |
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222 // Captured.. and then opens a new medialist with teh required filter. |
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223 // ---------------------------------------------------------------------------- |
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224 // |
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225 void CGlxPreviewThumbnailBinding::HandleItemChangedL(const CMPXCollectionPath& aPath, |
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226 TBool aPopulateListTNs ) |
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227 { |
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228 TRACER("CGlxPreviewThumbnailBinding::HandleItemChangedL"); |
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229 iTimerTicked = EFalse; |
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230 iPopulateListTNs = aPopulateListTNs; |
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231 iProgressIndex = KErrNone; |
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232 |
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233 // remove and close old medialist |
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234 if( iMediaList ) |
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235 { |
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236 // Reset the trial and the trialCount to 0 while deleting the medialist |
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237 iTrial = 0; |
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238 iTrialCount = 0; |
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239 iMediaList->RemoveMediaListObserver( this ); |
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240 iMediaList->RemoveContext(iThumbnailContext); |
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241 delete iThumbnailContext; |
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242 iThumbnailContext = NULL; |
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243 iMediaList->Close(); |
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244 iMediaList = NULL; |
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245 } |
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246 |
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247 // Filter that filters out any GIF, corrupted images |
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248 CMPXFilter* filter = NULL; |
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249 filter = TGlxFilterFactory::CreatePreviewFilterL(); |
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250 CleanupStack::PushL( filter ); |
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251 // create new medialist with the required filter which filters out all DRM, GIFS and corrupt |
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252 // thumbnial |
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253 iMediaList = MGlxMediaList::InstanceL( aPath ,KGlxIdNone, filter); |
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254 iThumbnailContext = CGlxThumbnailContext::NewL( &iThumbnailIterator ); // set the thumbnail context |
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255 iThumbnailIterator.SetRange( KPreviewThumbnailFetchCount ); // request for fifiteen thumbnails |
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256 iThumbnailContext->SetDefaultSpec( iGridIconSize.iWidth,iGridIconSize.iHeight ); |
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257 iMediaList->AddContextL(iThumbnailContext ,KGlxFetchContextPriorityNormal ); |
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258 // adding the medialist to observ any changes or updates done |
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259 iMediaList->AddMediaListObserverL(this); |
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260 CleanupStack::PopAndDestroy( filter ); |
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261 |
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262 //Start the timer |
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263 StartTimer(iPopulateListTNs); |
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264 } |
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265 |
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266 // ---------------------------------------------------------------------------- |
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267 // StartTimer - Starts the timer based on the flag populateListTN's |
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268 // where the flag will be true, when initially the first thumbnails in the list |
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269 // are populated. |
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270 // ---------------------------------------------------------------------------- |
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271 // |
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272 void CGlxPreviewThumbnailBinding::StartTimer(TBool aPopulateListTNs) |
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273 { |
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274 TRACER("CGlxPreviewThumbnailBinding::StartTimer"); |
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275 |
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276 iPopulateListTNs = aPopulateListTNs; |
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277 |
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278 if (iTimer) |
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279 { |
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280 iTimer->Cancel(); |
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281 } |
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282 |
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283 if (iPopulateListTNs) |
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284 { |
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285 iTimer->Start(KInitialThumbnailsTimeDelay, KInitialThumbnailsTimeDelay, |
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286 TCallBack(IsTimeL,this)); |
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287 } |
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288 else |
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289 { |
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290 iTimer->Start(KThumbnailStartTimeDelay, KThumbnailIntervalTimeDelay, |
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291 TCallBack(IsTimeL,this)); |
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292 } |
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293 } |
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294 |
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295 // ---------------------------------------------------------------------------- |
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296 // HasFirstThumbnail |
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297 // ---------------------------------------------------------------------------- |
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298 // |
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299 TBool CGlxPreviewThumbnailBinding::HasFirstThumbnail( const RArray< TMPXAttribute >& aAttributes ) |
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300 { |
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301 TRACER("CGlxPreviewThumbnailBinding::HasFirstThumbnail"); |
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302 TMPXAttribute thumbnailAttribute(KGlxMediaIdThumbnail, |
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303 GlxFullThumbnailAttributeId( ETrue, |
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304 iGridIconSize.iWidth, |
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305 iGridIconSize.iHeight) ); |
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306 |
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307 TIdentityRelation< TMPXAttribute > match ( &TMPXAttribute::Match ); |
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308 return ( KErrNotFound != aAttributes.Find( thumbnailAttribute, match ) ); |
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309 } |
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310 // ---------------------------------------------------------------------------- |
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311 // HandleItemAddedL |
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312 // ---------------------------------------------------------------------------- |
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313 // |
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314 void CGlxPreviewThumbnailBinding::HandleItemAddedL( TInt /*aStartIndex*/, TInt |
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315 /*aEndIndex*/, MGlxMediaList* /*aList*/ ) |
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316 { |
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317 } |
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318 |
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319 // ---------------------------------------------------------------------------- |
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320 // HandleItemRemoved |
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321 // ---------------------------------------------------------------------------- |
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322 // |
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323 void CGlxPreviewThumbnailBinding::HandleItemRemovedL( TInt /*aStartIndex*/, TInt |
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324 /*aEndIndex*/, MGlxMediaList* /*aList*/ ) |
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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 // HandleAttributesAvailableL |
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331 // Inside this function we are going to append the index for which we have valid |
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332 // thumbnails and when the number of available thumbnails become equal to the |
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333 // number of slots where thumbnail to be shown we go for updating them to visual |
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334 // item. |
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335 // ---------------------------------------------------------------------------- |
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336 // |
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337 void CGlxPreviewThumbnailBinding::HandleAttributesAvailableL( TInt aItemIndex, |
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338 const RArray<TMPXAttribute>& aAttributes, MGlxMediaList* /*aList*/ ) |
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339 { |
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340 TRACER("CGlxPreviewThumbnailBinding::HandleAttributesAvailableL"); |
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341 |
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342 TMPXAttribute thumbnailAttribute(KGlxMediaIdThumbnail, |
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343 GlxFullThumbnailAttributeId( ETrue, iGridIconSize.iWidth, |
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344 iGridIconSize.iHeight ) ); |
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345 |
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346 TIdentityRelation< TMPXAttribute > match ( &TMPXAttribute::Match ); |
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347 |
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348 if (KErrNotFound != aAttributes.Find( thumbnailAttribute, match )) |
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349 { |
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350 const TGlxMedia& item = iMediaList->Item( aItemIndex ); |
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351 const CGlxThumbnailAttribute* value = item.ThumbnailAttribute( |
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352 thumbnailAttribute ); |
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353 if (value) |
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354 { |
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355 iPreviewItemCount.AppendL( aItemIndex ); |
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356 } |
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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 // HandleFocusChangedL |
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362 // ---------------------------------------------------------------------------- |
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363 // |
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364 void CGlxPreviewThumbnailBinding::HandleFocusChangedL( NGlxListDefs:: |
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365 TFocusChangeType /*aType*/, TInt /*aNewIndex*/, TInt /*aOldIndex*/, |
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366 MGlxMediaList* /*aList*/ ) |
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367 { |
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368 |
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369 } |
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370 |
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371 // ---------- ------------------------------------------------------------------ |
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372 // HandleItemSelected |
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373 // ---------------------------------------------------------------------------- |
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374 // |
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375 void CGlxPreviewThumbnailBinding::HandleItemSelectedL(TInt /*aIndex*/, |
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376 TBool /*aSelected*/, MGlxMediaList* /*aList*/ ) |
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377 { |
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378 |
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379 } |
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380 |
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381 // ---------------------------------------------------------------------------- |
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382 // HandleMessageL |
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383 // ---------------------------------------------------------------------------- |
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384 // |
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385 void CGlxPreviewThumbnailBinding::HandleMessageL( const CMPXMessage& /*aMessage*/, |
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386 MGlxMediaList* /*aList*/ ) |
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387 { |
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388 |
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389 } |
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390 |
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391 // ---------------------------------------------------------------------------- |
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392 // HandleError |
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393 // ---------------------------------------------------------------------------- |
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394 // |
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395 void CGlxPreviewThumbnailBinding::HandleError( TInt /*aError*/ ) |
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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 // HandleCommandCompleteL |
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402 // ---------------------------------------------------------------------------- |
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403 // |
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404 void CGlxPreviewThumbnailBinding::HandleCommandCompleteL( CMPXCommand* |
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405 /*aCommandResult*/, |
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406 TInt /*aError*/, MGlxMediaList* /*aList*/ ) |
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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 // HandleMediaL |
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413 // ---------------------------------------------------------------------------- |
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414 // |
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415 void CGlxPreviewThumbnailBinding::HandleMediaL( TInt /*aListIndex*/, |
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416 MGlxMediaList* /*aList*/ ) |
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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 // ---------------------------------------------------------------------------- |
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422 // HandleItemModifiedL |
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423 // ---------------------------------------------------------------------------- |
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424 // |
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425 void CGlxPreviewThumbnailBinding::HandleItemModifiedL( const RArray<TInt>& |
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426 /*aItemIndexes*/, |
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427 MGlxMediaList* /*aList*/ ) |
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428 { |
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429 |
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430 } |