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1 /* |
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2 * Copyright (c) 2004, 2005 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: Navi pane zoom indicator control for |
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15 * Video Telephone application. |
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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 #ifndef CVTUIZOOMCONTROL_H |
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22 #define CVTUIZOOMCONTROL_H |
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23 |
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24 // INCLUDES |
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25 #include <coecntrl.h> |
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26 #include <aknutils.h> |
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27 #include "CVtUiBitmapManager.h" |
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28 |
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29 // CLASS DECLARATION |
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30 |
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31 /** |
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32 * Navi pane zoom indicator control for Video Telephone application. |
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33 * |
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34 * @since Series 60 2.6 |
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35 */ |
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36 class CVtUiZoomControl |
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37 : public CCoeControl |
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38 { |
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39 public: // Constructors and destructor |
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40 |
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41 /** |
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42 * C++ constructor. |
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43 * @param aBitmapManager bitmap manager. |
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44 */ |
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45 CVtUiZoomControl( CVtUiBitmapManager& aBitmapManager ); |
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46 |
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47 /** |
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48 * Symbian constructor. |
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49 */ |
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50 void ConstructL(); |
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51 |
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52 /** |
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53 * C++ destructor. |
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54 */ |
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55 ~CVtUiZoomControl(); |
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56 |
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57 public: // New functions |
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58 |
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59 /** |
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60 * Sets zoom parameters. |
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61 * @param aStepCount amount of steps, 0 if zooming disabled. |
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62 * @param aCurrentStep current step, 0 .. aStepCount. |
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63 */ |
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64 void SetZoomParams( |
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65 const TInt aStepCount, |
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66 const TInt aCurrentStep ); |
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67 |
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68 /** |
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69 * Commits changes. |
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70 */ |
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71 void CommitL(); |
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72 |
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73 /** |
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74 * Returns ETrue if zooming is enabled. |
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75 * @return ETrue if enabled. |
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76 */ |
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77 TBool IsZoomEnabled() const; |
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78 |
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79 /** |
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80 * Gets zoom parameters. |
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81 * @param aStepCount amount of steps, 0 if zooming disabled. |
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82 * @param aCurrentStep current step, 0 .. aStepCount. |
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83 */ |
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84 void GetZoomParams( |
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85 TInt& aStepCount, |
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86 TInt& aCurrentStep ) const; |
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87 |
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88 /** |
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89 * Updates zoom. This method should be called periodically during zooming. |
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90 * @return ETrue if zoom step was updated. |
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91 */ |
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92 TBool UpdateZoomL(); |
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93 |
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94 /** |
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95 * Stops zoom. |
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96 */ |
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97 void StopZoom(); |
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98 |
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99 public: // Functions from base classes |
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100 |
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101 /** |
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102 * From CCoeControl, handles key events. |
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103 * @param aKeyEvent key event. |
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104 * @param aType type of event. |
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105 * @return response indicating if key was consumed. |
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106 */ |
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107 virtual TKeyResponse OfferKeyEventL( |
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108 const TKeyEvent& aKeyEvent, |
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109 TEventCode aType ); |
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110 |
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111 /** |
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112 * From CCoeControl, handles resource change. |
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113 * @param aType type of change. |
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114 */ |
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115 virtual void HandleResourceChange( |
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116 TInt aType ); |
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117 |
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118 protected: // Functions from base classes |
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119 |
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120 /** |
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121 * From CCoeControl, draws the control. |
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122 * @param aRect area to be drawn. |
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123 */ |
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124 virtual void Draw( const TRect& aRect ) const; |
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125 |
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126 /** |
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127 * From CCoeControl, handles size changes. |
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128 */ |
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129 virtual void SizeChanged(); |
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130 |
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131 /** |
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132 * From CCoeControl, handles position changes. |
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133 */ |
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134 virtual void PositionChanged(); |
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135 |
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136 private: |
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137 |
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138 /** |
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139 * Calculates amount of steps to be shown. |
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140 * @param aFullSteps amount of full steps. |
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141 * @param aPartialStep partial steps, 0 .. 255. |
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142 */ |
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143 void DetermineSteps( |
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144 TInt& aFullSteps, |
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145 TInt& aPartialStep ) const; |
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146 |
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147 /** |
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148 * Generates zoom mask bitmap. |
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149 * @param aAreaBitmap maximum bitmap, ownership not transferred. |
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150 * @param aPartial partial amount. |
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151 * @param aRow area row number. |
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152 * @param aRowSize size of the row. |
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153 * @return ETrue if successful, EFalse otherwise. |
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154 */ |
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155 TBool GenerateZoomMaskBitmap( |
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156 CFbsBitmap* aMaskBitmap, |
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157 const TInt aPartial, |
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158 const TInt aRow, |
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159 const TSize& aRowSize ) const; |
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160 |
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161 /** |
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162 * Generates zoom mask bitmap. |
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163 * @param aAreaBitmap maximum bitmap, ownership not transferred. |
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164 * @param aPartial partial amount. |
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165 * @param aRow area row number. |
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166 * @param aRowSize size of the row. |
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167 */ |
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168 void DoGenerateZoomMaskBitmap( |
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169 CFbsBitmap* aMaskBitmap, |
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170 const TInt aPartial, |
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171 const TInt aRow, |
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172 const TSize& aRowSize ) const; |
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173 |
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174 /** |
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175 * Creates bitmaps. |
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176 * @return error code. |
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177 */ |
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178 TInt CreateBitmaps(); |
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179 |
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180 /** |
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181 * Creates bitmaps. |
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182 */ |
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183 void CreateBitmapsL(); |
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184 |
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185 /** |
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186 * Returns size of the temporary bitmaps. |
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187 * @return size of the temporary bitmaps. |
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188 */ |
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189 TSize SizeOfBitmap() const; |
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190 |
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191 /** |
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192 * Gets position and source rect. |
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193 * @param aPosition it will contain position. |
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194 * @param aSourceRect it will contain source rectangle. |
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195 * @param aZoomStep zoom step. |
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196 */ |
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197 void GetPositionAndRect( |
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198 TPoint& aPosition, |
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199 TRect& aSourceRect, |
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200 const TInt aZoomStep ) const; |
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201 |
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202 private: |
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203 |
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204 // Inner class. |
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205 class CBitmap; |
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206 |
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207 // Reference to bitmap manager. |
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208 CVtUiBitmapManager& iBitmapManager; |
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209 |
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210 // Zoom direction bitmap identifier. |
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211 TVtUiBitmapPoolId iZoomDirId; |
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212 |
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213 // Zoom area bitmap identifier. |
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214 TVtUiBitmapPoolId iZoomAreaId; |
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215 |
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216 // Zoom min bitmap identifier. |
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217 TVtUiBitmapPoolId iZoomMinId; |
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218 |
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219 // Zoom max bitmap identifier. |
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220 TVtUiBitmapPoolId iZoomMaxId; |
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221 |
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222 // Zoom pane rectangle. |
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223 TRect iZoomPaneRect; |
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224 |
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225 // Zoom direction layout. |
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226 TAknLayoutRect iZoomDirLayout; |
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227 |
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228 // Zoom area layout. |
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229 TAknLayoutRect iZoomAreaLayout; |
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230 |
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231 // Current step, 0 .. iMaxZoomStep. |
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232 TInt iCurrentZoomStep; |
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233 |
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234 // Maximum step. |
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235 TInt iMaxZoomStep; |
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236 |
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237 // Used partial value used in iZoomMaskBitmap |
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238 // generation. |
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239 mutable TInt iZoomMaskPartial; |
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240 |
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241 // Used row value used in iZoomMaskBitmap |
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242 // generation. |
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243 mutable TInt iZoomMaskRow; |
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244 |
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245 // Owned partial soft mask. |
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246 CBitmap* iZoomPartialMask; |
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247 |
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248 // Owned partial shade (soft mask). |
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249 CBitmap* iZoomPartialShade; |
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250 |
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251 // Owned partial shade mask. |
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252 CBitmap* iZoomPartialShadeMask; |
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253 |
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254 // Zoom direction +1 or -1. 0 if no |
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255 // zoom ongoing. |
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256 TInt iZoomDirection; |
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257 |
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258 // Zoom step at the start of zooming. |
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259 TInt iZoomStepStart; |
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260 |
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261 // Start time of zooming. |
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262 TTime iZoomStartTime; |
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263 |
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264 }; |
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265 |
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266 #endif // CVTUIZOOMCONTROL_H |
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267 |
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268 // End of File |