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1 /* |
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2 * Copyright (c) 2007-2008 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: Slideshow view volume control. |
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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 |
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22 #ifndef C_SHWSLIDESHOWVOLUMECONTROL_H |
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23 #define C_SHWSLIDESHOWVOLUMECONTROL_H |
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24 |
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25 |
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26 // INCLUDES |
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27 #include <alf/alfcontrol.h> |
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28 |
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29 // FORWARD DECLARATION |
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30 class CAlfImageVisual; |
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31 class CAlfTextVisual; |
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32 class CFbsBitmap; |
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33 class CGlxUiUtility; |
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34 |
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35 class CAlfAnchorLayout; |
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36 class CAlfBorderBrush; |
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37 class CAlfLineVisual; |
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38 class CAlfCurvePathLayout; |
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39 class CShwSlideshowVolumeControl; |
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40 class CAlfImageBrush; |
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41 class CAlfGridLayout; |
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42 class CAlfDeckLayout; |
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43 class CAlfAnchorLayout; |
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44 |
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45 // CLASS DECLARATION |
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46 /** |
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47 * Volume control declaration. |
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48 * @internal reviewed 07/06/2007 by Kimmo Hoikka |
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49 */ |
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50 // --------------------------------------------------------------------------- |
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51 // CShwSlideshowVolumeControl declaration |
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52 // --------------------------------------------------------------------------- |
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53 NONSHARABLE_CLASS( CShwSlideshowVolumeControl ) : public CAlfControl |
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54 { |
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55 public: |
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56 |
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57 /** |
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58 * Two-phased constructor. |
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59 * |
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60 * @return Pointer to newly created object. |
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61 */ |
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62 static CShwSlideshowVolumeControl* NewL( |
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63 CAlfEnv& aEnv, |
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64 CGlxUiUtility& aUtility, |
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65 TTimeIntervalMicroSeconds32 aInterval = 0); |
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66 |
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67 /** |
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68 * Destructor. |
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69 */ |
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70 virtual ~CShwSlideshowVolumeControl(); |
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71 |
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72 /** |
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73 * Called when the volume is changed. |
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74 * @param aVolume The new volume. |
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75 * @param aMaxVolume The maximum volume. |
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76 */ |
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77 void SetVolume(TInt aVolume, TInt aMaxVolume); |
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78 |
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79 /** |
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80 * Notifies the control that its visible has been changed on a display. |
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81 * This is the earliest time when the control knows the dimensions of |
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82 * the display it is being shown on. |
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83 * |
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84 * @param aIsVisible ETrue, if the control is now visible on the |
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85 * display. EFalse, if the control is about to the hidden |
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86 * on the display. |
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87 * @param aDisplay The display on which the control's visibility |
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88 * is changing. |
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89 * @see CHuiControl |
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90 */ |
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91 void NotifyControlVisibility(TBool aIsVisible, CAlfDisplay& aDisplay); |
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92 |
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93 /** |
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94 * Called when the control should be redrawn, |
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95 * e.g. after a change in volume. |
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96 */ |
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97 void RefreshL(); |
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98 |
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99 /** |
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100 * Called when the control should be hidden, |
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101 * e.g. after a change in volume. |
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102 */ |
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103 void Hide(); |
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104 |
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105 /** |
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106 * Initilize the control textures |
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107 * e.g. When slideshow engine started or |
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108 * textures are removed due to foreground lost event |
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109 */ |
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110 void InitControlTextureL(); |
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111 |
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112 /** |
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113 * Called when the control should be shown. |
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114 * e.g. Key press and tap event |
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115 */ |
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116 TBool ShowControlL(); |
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117 |
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118 /** |
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119 * Method timer calls after time out. |
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120 */ |
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121 TInt TimerCallback(); |
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122 |
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123 private: |
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124 |
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125 /** |
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126 * C++ default constructor. |
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127 */ |
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128 CShwSlideshowVolumeControl( CAlfEnv& aEnv, |
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129 CGlxUiUtility& aUtility, |
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130 TTimeIntervalMicroSeconds32 aInterval); |
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131 |
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132 /** |
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133 * By default Symbian 2nd phase constructor is private. |
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134 */ |
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135 void ConstructL( ); |
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136 |
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137 /** |
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138 * Helper function to retrieve and position the control's visuals |
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139 */ |
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140 void SetAndLayoutVisualsL(); |
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141 |
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142 /** |
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143 * Helper function to convert the current volume to a percentage |
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144 */ |
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145 TInt CurrentVolumeAsPercentage(); |
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146 |
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147 /** |
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148 * Helper function to setup the visuals when volume is muted |
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149 */ |
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150 void SetMuteVisualVisibility(); |
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151 |
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152 /** |
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153 * Helper function to setup the visuals when volume is |
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154 * neither muted nor maximum |
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155 */ |
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156 void SetValueVisualVisibilityL(TInt aVolume); |
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157 |
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158 /** |
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159 * Helper function to setup the visuals when volume is maximum |
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160 */ |
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161 void CreateFullVolumeVisualsL(TInt aVolume); |
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162 |
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163 /** |
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164 * Helper function to remove the visuals from the layout |
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165 */ |
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166 void RemoveLayoutVisuals(); |
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167 |
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168 /** |
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169 * Helper function to remove the visuals from the layout |
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170 */ |
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171 void RemoveControlVisuals(); |
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172 |
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173 private: |
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174 |
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175 CGlxUiUtility& iUtility; // not owned |
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176 |
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177 /** main parent layout*/ |
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178 CAlfAnchorLayout* iMainVisual; |
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179 |
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180 /* deck layout holds the backgroung visual, mute visual and the value grid */ |
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181 CAlfDeckLayout* iVisualDeck; |
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182 |
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183 /**holds the speaker icon and the percentage text*/ |
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184 CAlfGridLayout* iValueGridVisual; |
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185 |
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186 CAlfImageBrush* iBrush; // owned |
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187 |
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188 // The visual elements of the control |
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189 CAlfImageVisual* iBackgroundImageVisual; // owned |
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190 CAlfImageVisual* iMuteImageVisual; // owned |
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191 CAlfImageVisual* iSpeakerImageVisual; // owned |
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192 CAlfTextVisual* iPercentTextVisual; // owned |
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193 |
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194 TInt iVolume; // owned |
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195 TInt iMaxVolume; //owned |
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196 |
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197 CPeriodic* iTimer; // owned |
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198 TTimeIntervalMicroSeconds32 iInterval; // owned |
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199 |
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200 TSize iControlSize; // owned |
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201 CAlfEnv& iAlfEnv; //not owned |
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202 }; |
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203 |
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204 #endif // C_SHWSLIDESHOWVOLUMECONTROL_H |
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205 |
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206 // End of File |