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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: Handles & propogates UI state change notifications. |
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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 * @internal reviewed 24/08/2007 by D Holland |
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22 */ |
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23 |
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24 #ifndef __GLXTV_H__ |
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25 #define __GLXTV_H__ |
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26 |
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27 // External Includes |
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28 #include <e32def.h> |
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29 #include <e32base.h> |
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30 |
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31 // Internal Includes |
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32 #include <glxtvconstants.h> |
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33 |
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34 // Forward Declarations |
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35 class MGlxTvObserver; |
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36 class CGlxWindowVisibilityMonitor; |
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37 class CGlxTvConnectionMonitor; |
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38 class CRepository; |
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39 |
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40 // For window server visibility notifications |
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41 class MGlxWindowVisibilityObserver |
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42 { |
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43 public: |
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44 /** |
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45 * Handle changes to the application window visiblity |
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46 * Called when window visible state changes |
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47 * @param aChangeType The visibility change type |
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48 */ |
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49 virtual void HandleWindowVisibilityChangedL( TTvChangeType aChangeType ) = 0; |
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50 }; |
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51 |
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52 |
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53 |
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54 // For Tv connection notification |
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55 class MGlxTvConnectionObserver |
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56 { |
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57 public: |
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58 /** |
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59 * Handle TV connection state changes |
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60 */ |
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61 virtual void HandleTvConnectionStatusChangedL( ) = 0; |
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62 }; |
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63 |
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64 |
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65 |
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66 |
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67 /** |
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68 * Class Description |
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69 * A class that handles and propagates UI change notifications |
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70 * @author Loughlin |
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71 */ |
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72 NONSHARABLE_CLASS (CGlxTv) : public CBase, |
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73 public MGlxWindowVisibilityObserver, |
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74 public MGlxTvConnectionObserver |
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75 { |
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76 public: |
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77 /** |
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78 * Static Symbian 2 stage constructor. |
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79 * @param a TvObserver |
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80 */ |
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81 IMPORT_C static CGlxTv* NewL( MGlxTvObserver& aTvObserver ); |
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82 |
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83 /** |
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84 * Destructor. |
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85 */ |
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86 IMPORT_C ~CGlxTv(); |
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87 |
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88 private: |
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89 |
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90 /** |
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91 * Standard C++ constructor |
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92 * @param a TvObserver |
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93 */ |
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94 CGlxTv(MGlxTvObserver& aTvObserver); |
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95 |
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96 /* |
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97 * Symbian second stage construction |
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98 */ |
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99 void ConstructL(); |
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100 |
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101 public: // class public method |
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102 |
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103 /** |
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104 * Get the current screen size |
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105 * @return the Screen size in pixels |
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106 */ |
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107 IMPORT_C TSize ScreenSizeL() const; |
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108 |
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109 /** |
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110 * Is the Analog TV Connected |
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111 * @return ETrue if active, otherwise EFalse |
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112 */ |
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113 IMPORT_C TBool IsConnected() const; |
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114 |
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115 /** |
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116 * Is the TV widescreen |
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117 * @return ETrue if widescreen, otherwise EFalse |
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118 */ |
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119 IMPORT_C TBool IsWidescreen() const; |
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120 |
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121 /** |
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122 * Is the HDMI TV Connected |
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123 * @return ETrue if active, otherwise EFalse |
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124 */ |
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125 IMPORT_C TBool IsHDMIConnected() const; |
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126 |
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127 public: // from MGlxWindowVisibilityObserver |
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128 /** |
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129 * @ref MGlxWindowVisibilityObserver::HandleWindowVisibilityChangedL |
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130 */ |
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131 void HandleWindowVisibilityChangedL( TTvChangeType aChangeType ); |
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132 |
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133 |
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134 public: // from MGlxTvConnectionObserver |
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135 /** |
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136 * @ref MGlxTvConnectionObserver::HandleTvConnectionStatusChangedL |
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137 */ |
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138 void HandleTvConnectionStatusChangedL( ); |
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139 |
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140 private: // new private methods |
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141 /** |
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142 * Retrive the TV Display Aspect Ratio and TV Setting |
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143 * Calculate the screen size from aspect ratio and TV type |
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144 */ |
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145 void CalcTvScreenSzL(); |
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146 |
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147 /** |
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148 * Start monitoring the environment for changes to the TV aspect ratio |
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149 * and the Gallery window groups visiblity |
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150 */ |
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151 void MonitorEnvironmentL(); |
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152 |
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153 /** |
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154 * Stop monitoring the environment for changes to the TV aspect ratio |
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155 * and the Gallery window groups visiblity |
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156 */ |
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157 void StopMonitoringEnvironment(); |
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158 |
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159 private: // class member data |
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160 // Not Owned: The TV out observer |
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161 MGlxTvObserver& iTvObserver; |
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162 |
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163 // Owned: The Window visibility monitor |
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164 CGlxWindowVisibilityMonitor* iWindowVisibilityMonitor; |
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165 |
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166 // Owned: The TV connection monitor |
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167 CGlxTvConnectionMonitor* iTvConnectionMonitor; |
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168 |
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169 // Size of the TV Out display size |
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170 TSize iSzInPixels; |
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171 |
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172 // Owned: The central repository where TV display ratio is held. |
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173 CRepository* iCenRep; |
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174 |
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175 // The implementation of the class, hidden from clients |
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176 class CGlxTvOutCenRepMonitor; |
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177 |
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178 // Owned: Monitoring class for Tv Ratio Values |
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179 CGlxTvOutCenRepMonitor* iTvDisplayAspectRatioMonitor; |
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180 |
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181 // The TV aspect ratio |
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182 TInt iAspectRatio; |
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183 }; |
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184 |
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185 |
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186 #endif // __GLXTV_H__ |