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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: Class for Camera Zoom Pane* |
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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 #ifndef CAMZOOMPANE_H |
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20 #define CAMZOOMPANE_H |
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21 |
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22 // INCLUDES |
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23 #include <coecntrl.h> |
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24 #include <eiklabel.h> |
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25 #include <AknUtils.h> // for TAknLayout |
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26 #include "CamPSI.h" // For Product Specific Information |
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27 #include "CamAppController.h" // For controller definition |
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28 #include "CamSettings.hrh" // For TCamPhotoSizeId |
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29 #include "CamSettingsInternal.hrh" |
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30 #include "CamResourceLoader.h" |
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31 #include "CamZoomModel.h" |
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32 #include "CamBmpRotatorAo.h" |
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33 |
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34 // CONSTANTS |
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35 |
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36 // MACROS |
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37 |
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38 // DATA TYPES |
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39 |
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40 // FUNCTION PROTOTYPES |
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41 |
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42 // FORWARD DECLARATIONS |
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43 class CCamRemConObserver; |
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44 class MTouchFeedback; |
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45 |
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46 // CLASS DECLARATION |
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47 |
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48 /** |
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49 * Class for showing the current zoom level in a side pane. |
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50 * |
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51 * @since 2.8 |
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52 */ |
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53 class CCamZoomPane : public CBase, |
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54 public MCamControllerObserver, |
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55 public MCamResourceLoader |
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56 { |
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57 // Private data type used internally by the zoom pane |
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58 // to store the orientation it should be drawn |
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59 enum TZPOrientation |
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60 { |
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61 EZPOrientationVertical = 0, |
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62 EZPOrientationHorizontal = 1 |
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63 }; |
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64 |
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65 public: // Constructors and destructor |
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66 |
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67 /** |
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68 * Two-phased constructor. |
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69 * @param aController handle to camera application controller |
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70 * @param aOverlayViewFinder whether zoom pane is drawn over view finder |
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71 */ |
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72 static CCamZoomPane* NewL( CCamAppController& aController, |
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73 TBool aOverlayViewFinder ); |
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74 |
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75 /** |
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76 * Destructor. |
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77 */ |
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78 virtual ~CCamZoomPane(); |
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79 |
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80 public: // From MCamResourceLoader |
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81 /** |
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82 * From MCamResourceLoader |
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83 * @since 3.0 |
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84 */ |
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85 void LoadResourceDataL(); |
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86 |
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87 /** |
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88 * From MCamResourceLoader |
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89 * @since 3.0 |
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90 */ |
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91 void UnloadResourceData(); |
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92 |
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93 /** |
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94 * From MCamResourceLoader |
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95 * @since 3.0 |
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96 */ |
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97 void ReloadResourceDataL(); |
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98 |
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99 public: // New functions |
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100 /** |
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101 * Sets the range of values to be represented on the Zoom Pane "shaft". |
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102 * These values should be retrieved from the CCaeEngine |
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103 * @since 2.8 |
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104 * @param aMin The minimum supported value (typically zero) |
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105 * @param aMax The maximum supported value (one or more) |
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106 * @return KErrNone if parameters are valid, else KErrArgument |
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107 */ |
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108 TInt SetZoomRange( TInt aMin, TInt aMax ); |
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109 |
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110 /** |
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111 * Sets the current zoom level. Must be within (inclusive) range passed |
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112 * to the SetZoomRange function. |
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113 * @since 2.8 |
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114 * @param aZoom New zoom value to use. |
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115 * @return KErrNone if parameter valid, else KErrArgument |
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116 */ |
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117 TInt SetZoomValue( TInt aZoom ); |
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118 |
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119 /** |
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120 * Sets the keys to be intepreted as zoom keys |
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121 * @since 3.0 |
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122 * @param aZoomIn Zoom in key scancode |
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123 * @param aZoomOut Zoom out key scancode |
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124 */ |
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125 void SetZoomKeys( const RArray<TInt>& aZoomIn, |
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126 const RArray<TInt>& aZoomOut ); |
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127 |
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128 /** |
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129 * Gets the current zoom step |
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130 * @since 2.8 |
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131 * @returns The current zoom step |
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132 */ |
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133 TInt ZoomValue() const; |
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134 |
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135 /** |
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136 * Returns whether or not the Zoom Pane can currently be shown. |
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137 * @since 2.8 |
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138 * @return ETrue if the Zoom Pane is allowed to be shown, else EFalse |
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139 */ |
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140 TBool OkToShowPane() const; |
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141 |
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142 /** |
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143 * Is the zoom pane is visible |
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144 * @since 2.8 |
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145 * @return ETrue if the zoom pane is visible |
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146 */ |
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147 TBool IsVisible() const; |
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148 |
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149 /** |
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150 * Tells the zoom pane whether it is on display |
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151 * @since 2.8 |
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152 * @param aVisible ETrue to make the zoom pane invisible |
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153 * @param aRedraw Whether to force a redraw event |
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154 */ |
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155 void MakeVisible( TBool aVisible, TBool aRedraw ); |
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156 |
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157 /** |
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158 * Draws the zoom pane |
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159 * @since 2.8 |
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160 * @param aGc The graphics context to use for drawing |
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161 */ |
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162 void Draw( CBitmapContext& aGc ) const; |
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163 |
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164 /** |
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165 * Set draw rect |
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166 * @since 2.8 |
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167 * @param aRect Rect zoom pane draws into |
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168 */ |
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169 void SetRect( TRect aRect ); |
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170 |
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171 /** |
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172 * Handles zoom-key operation, passed in from the container. |
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173 * @since 2.8 |
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174 * @param aKeyEvent The key event |
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175 * @param aType the key type |
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176 * @return Whether this key event was consumed or not |
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177 */ |
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178 TKeyResponse OfferKeyEventL( const TKeyEvent& aKeyEvent, TEventCode aType ); |
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179 |
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180 /** |
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181 * Returns the zoom pane rect |
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182 * @since 3.0 |
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183 * @return the zoom pane rect |
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184 */ |
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185 TRect Rect() const; |
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186 |
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187 /** |
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188 * Called when the parent gains or loses foreground |
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189 * @param aForeground ETrue if gained foreground, else EFalse |
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190 * @since 3.0 |
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191 */ |
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192 void HandleForegroundEvent( TBool aForeground ); |
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193 |
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194 /** |
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195 * Sets the number of zoom steps for each type of zoom to be |
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196 * reflected in the zoom pane shaft |
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197 * @param aOptSteps The number of optical zoom steps |
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198 * @param aStdSteps The number of digital zoom steps |
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199 * @param aExtSteps The number of extended digital zoom steps |
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200 * @since 3.0 |
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201 */ |
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202 void SetZoomSteps( TInt aOptSteps, TInt aStdSteps, TInt aExtSteps ); |
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203 |
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204 /** |
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205 * Returns whether there is currently an ongoing zoom operation. |
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206 * @since 3.0 |
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207 * @return ETrue if zooming, else EFalse |
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208 */ |
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209 TBool IsCurrentlyZooming() const; |
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210 |
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211 /** |
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212 * Indicates that the zoom level should be reset to default |
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213 * when the engine is next prepared |
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214 * @since 2.8 |
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215 * @param aReset ETrue if the zoom pane should be reset, else EFalse |
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216 */ |
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217 void ResetToDefaultAfterPrepare( TBool aReset ); |
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218 |
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219 /** |
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220 * Indicates whether or not the zoom level is waiting to be reset to default |
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221 * @since 3.0 |
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222 * @return TBool ETrue if a reset is pending, othewise EFalse |
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223 */ |
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224 TBool IsResetPending() const; |
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225 |
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226 /** |
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227 * Sets a point position to be based on another point plus an optional offset. |
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228 * Used for moving along the slider. Whether the X or Y part of the point |
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229 * changes is dependent on the current orientation |
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230 * @since 3.0 |
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231 * @param aPoint This point will be overwritten with the new X/Y values |
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232 * @param aOffset This is the basis for the new value for 'aPoint' |
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233 * @param aAddditional This is an additional modification to 'aOffset' value |
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234 */ |
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235 void SetPoint( TPoint& aPoint, const TPoint& aOffset, TInt aAdditional = 0) const; |
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236 |
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237 /** |
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238 * Returns whether the current zoom value is the minimum zoom |
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239 * @since 3.1 |
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240 * @return Whether the current zoom value is the minimum zoom |
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241 */ |
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242 TBool IsZoomAtMinimum() const; |
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243 |
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244 /** |
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245 * Stops all zooming activity |
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246 */ |
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247 void StopZoom(); |
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248 |
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249 /*** |
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250 * Resets the zoom (digital, and, if available, optical) to 1x |
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251 * @since 3.0 |
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252 */ |
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253 void ResetZoomTo1x(); |
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254 |
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255 /*** |
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256 * Handle pointer events |
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257 * @since S60 v5.0 |
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258 * @param TPointerEvent, pointer event |
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259 * @return TBool, ETrue if the pointer event was used |
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260 */ |
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261 TBool HandlePointerEventL( const TPointerEvent& aPointerEvent ); |
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262 |
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263 /*** |
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264 * Handle pointer events |
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265 * @since S60 v5.0 |
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266 * @param TInt, Pointer's Y-position |
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267 * @return TBool, ETrue if the pointer event was used |
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268 */ |
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269 TBool StartTouchZoomL( TInt aPointer ); |
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270 |
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271 |
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272 |
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273 public: // Functions from base classes |
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274 protected: // New functions |
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275 protected: // Functions from CCoeControl |
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276 |
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277 /** |
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278 * Handles events from the controller |
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279 * @since 2.8 |
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280 * @param aEvent The controller event that has occurred |
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281 * @param aError An associated error code |
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282 */ |
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283 void HandleControllerEventL( TCamControllerEvent aEvent, TInt aError ); |
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284 |
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285 protected: // Functions from base classes |
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286 private: |
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287 |
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288 /** |
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289 * C++ default constructor. |
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290 * since 2.8 |
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291 * @param aRect parent rect |
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292 * @param aController handle to camera application controller |
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293 * @param aOverlayViewFinder whether zoom pane is drawn over view finder |
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294 */ |
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295 CCamZoomPane( CCamAppController& aController, |
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296 TBool aOverlayViewFinder ); |
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297 |
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298 /** |
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299 * By default Symbian 2nd phase constructor is private. |
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300 */ |
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301 void ConstructL(); |
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302 |
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303 /** |
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304 * Reads layout information from a resource |
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305 * @since 2.8 |
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306 */ |
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307 void ReadLayoutL(); |
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308 |
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309 /** |
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310 * Updates Layout and size of control |
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311 * @since S60 5.0 |
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312 */ |
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313 void SizeChanged(); |
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314 |
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315 /** |
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316 * Draws the thumb on the zoom pane |
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317 * @since 3.0 |
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318 * @param aGc The graphics context to draw to |
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319 */ |
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320 void DrawThumb( CBitmapContext& aGc ) const; |
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321 |
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322 /** |
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323 * Draws the shaft of the zoom pane |
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324 * @since 3.0 |
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325 * @param aGc The graphics context to draw to |
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326 */ |
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327 void DrawShaft( CBitmapContext& aGc ) const; |
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328 |
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329 /** |
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330 * Draws the plus/minus icons for the zoom pane |
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331 * @since 3.0 |
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332 * @param aGc The graphics context to draw to |
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333 */ |
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334 void DrawPlusMinus( CBitmapContext& aGc ) const; |
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335 |
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336 /** |
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337 * Returns the current Zoom Pane orientation based on stored |
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338 * settings and whether the current camera supports horizontal zoom bar |
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339 * @since 3.0 |
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340 * @return The orientation (veritcal or horizontal) |
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341 */ |
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342 TZPOrientation PaneOrientation() const; |
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343 |
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344 /** |
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345 * Read nontouch layout |
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346 */ |
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347 void TouchLayout(); |
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348 |
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349 /** |
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350 * Read touch layout |
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351 */ |
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352 void NonTouchLayout(); |
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353 |
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354 /* |
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355 * Reads zoom keys from the appropriate array |
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356 */ |
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357 void ReadZoomKeys( const RArray<TInt>& aSource, |
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358 RArray<TInt>& aTarget ); |
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359 /* |
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360 * Checks for the zoom key with the mapped key's scan code |
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361 */ |
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362 TBool CheckForZoomKey( const TKeyEvent& aKeyEvent, |
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363 const RArray<TInt>& aKeys ); |
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364 |
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365 /** |
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366 * Touchfeedback |
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367 * @since S60 v5.0 |
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368 */ |
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369 void Touchfeedback(); |
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370 |
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371 public: // Data |
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372 |
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373 protected: // Data |
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374 |
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375 private: // Data |
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376 |
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377 // The bitmaps for the graphical components. |
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378 CFbsBitmap* iIconZoomTop[2]; |
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379 CFbsBitmap* iIconZoomMiddle[2]; |
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380 CFbsBitmap* iIconZoomBottom[2]; |
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381 CFbsBitmap* iIconZoomMarker[2]; |
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382 CFbsBitmap* iIconZoomMarkerGray[2]; |
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383 CFbsBitmap* iIconZoomMin[2]; |
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384 CFbsBitmap* iIconZoomMax[2]; |
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385 CFbsBitmap* iIconZoomMarkerCurrent; |
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386 |
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387 TRect iZoomPaneRect; |
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388 TRect iSliderParentRect; |
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389 TPoint iPlusPoint; |
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390 TPoint iMinusPoint; |
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391 TPoint iTopPoint; |
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392 TPoint iMiddlePoint; |
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393 TPoint iBottomPoint; |
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394 |
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395 //Holds the maximum 'travel' of the thumb along the slider |
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396 TInt iMaxOffset; |
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397 |
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398 // Minimum supported zoom level |
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399 TInt iMinZoom; |
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400 |
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401 // Maximum supported zoom level |
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402 TInt iMaxZoom; |
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403 |
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404 // Actual zoom level |
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405 TInt iCurZoom; |
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406 |
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407 // Targeted zoom level to be indicated by the thumb |
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408 TInt iTrgZoom; |
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409 |
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410 // Previous pointer Y-position |
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411 TInt iPointerPrevi; |
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412 |
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413 // Whether we are currently recording video or not. |
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414 TBool iRecordingVideo; |
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415 |
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416 // Reference to the Controller |
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417 CCamAppController& iController; |
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418 |
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419 // Represents a bitmask of TCamVideoZoom for video zoom features |
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420 TInt iZoomSupport; |
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421 |
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422 // Determine from PSI if zoom pane are overlaid on VF |
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423 TBool iOverlayViewFinder; |
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424 |
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425 // is the zoom pane visible |
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426 TBool iVisible; |
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427 |
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428 // Determine whether or not touch is active |
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429 TBool iTouchActive; |
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430 |
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431 // The current engine state, updated if it changes |
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432 TCamCameraState iCameraState; |
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433 |
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434 // The zoom model, owned by this control |
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435 CCamZoomModel* iModel; |
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436 |
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437 // The number of key repeats received in a row. |
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438 TInt iRepeatCounter; |
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439 |
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440 // The optical, digital and extended zoom steps to be shown on the zoom bar |
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441 TInt iOptSteps; |
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442 TInt iStdSteps; |
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443 TInt iExtSteps; |
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444 |
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445 // Stores the look and feel info of the zoom bar |
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446 TCamZoomLAF iZoomLAF; |
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447 |
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448 // Stores the orientation of the zoom pane (vertical or horizontal) |
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449 // as read from the Central Repository |
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450 TZPOrientation iOrientation; |
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451 |
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452 // Whether or not product uses volume keys for zoom |
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453 TBool iZoomUsingVolumeKeys; |
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454 |
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455 // Whether or not product uses navi-key left and right for zoom |
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456 TBool iZoomUsingNaviKeys; |
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457 |
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458 // Performs zoom frame/thumb bitmap rotation when needed |
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459 CCamBmpRotatorAo* iRotatorAo; |
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460 |
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461 // Timer used to remove zoom pane after a short delay |
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462 CCamTimer* iZoomTimer; |
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463 MTouchFeedback* iFeedback; // Not own |
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464 |
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465 // observer to receive volume key presses |
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466 CCamRemConObserver* iVolumeKeyObserver; |
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467 |
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468 RArray<TInt> iZoomInKeys; |
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469 RArray<TInt> iZoomOutKeys; |
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470 }; |
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471 |
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472 #endif // CAMZOOMPANE_H |
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473 |
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474 // End of File |