1 /* |
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2 * Copyright (c) 2002 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: LandmarksUi Content File - Distance editor for editor/viewer form |
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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 |
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23 |
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24 |
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25 #ifndef CLmkDistanceEditor_h |
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26 #define CLmkDistanceEditor_h |
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27 |
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28 // INCLUDES |
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29 #include "CLmkFloatEditor.h" |
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30 #include "landmarks.hrh" |
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31 |
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32 /// FORWARD DECLARATION |
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33 class CEikMfneSymbol; |
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34 |
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35 // CLASS DECLARATION |
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36 |
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37 /** |
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38 * CLmkDistanceEditor extends CLmkFloatEditor's functionality. |
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39 * Implements both metric and imperial units. |
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40 * Underlying floating value is just a value, which user inputs. |
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41 * Its limits depend on current unit. |
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42 * Number() method returns distance always in meters. |
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43 */ |
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44 class CLmkDistanceEditor : public CLmkFloatEditor |
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45 { |
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46 public: |
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47 // Constructors and destructor |
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48 /** |
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49 * Create CLmkDistanceEditor object |
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50 * @return newly instantiated object |
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51 */ |
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52 CLmkDistanceEditor(); |
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53 |
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54 /** |
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55 * Destructor. |
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56 */ |
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57 virtual ~CLmkDistanceEditor(); |
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58 |
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59 /** |
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60 * By default Symbian 2nd phase constructor |
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61 * @param aMinimumValue |
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62 * @param aMaximumValue |
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63 * @param aInitialValue |
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64 * @param aType |
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65 */ |
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66 void ConstructL(TReal32 aMinimumValue, |
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67 TReal32 aMaximumValue, |
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68 TReal32 aInitialValue); |
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69 |
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70 public: // From CLmkFloatEditor |
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71 |
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72 /** Sets value */ |
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73 void SetNumber(TReal aNumber); |
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74 |
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75 /** Gets value */ |
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76 TReal Number() const; |
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77 |
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78 protected: // From CLmkFloatEditor |
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79 |
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80 void HandleCustomFieldChanged(TInt aCustomFieldIndex); |
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81 |
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82 void HandleEnter(); |
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83 void HandleExit(); |
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84 |
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85 protected: // new functions |
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86 |
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87 enum TDistanceUnit |
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88 { |
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89 EUnitNone, |
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90 EUnitMeters, |
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91 EUnitKilometers, |
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92 EUnitFeet, |
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93 EUnitMiles |
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94 }; |
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95 |
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96 /** Converts from meters to given units */ |
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97 TReal32 MetersToUnits( |
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98 TReal32 aMeters, |
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99 TDistanceUnit aToUnits) const; |
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100 |
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101 /** Converts from given units to meters */ |
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102 TReal32 UnitsToMeters( |
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103 TReal32 aValue, |
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104 TDistanceUnit aFromUnits) const; |
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105 |
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106 |
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107 /** Updates min and max limits in editor field according to |
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108 * current units |
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109 */ |
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110 void UpdateValueLimits(); |
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111 |
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112 void SetUnit(TDistanceUnit aUnit); |
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113 TDistanceUnit Unit() const; |
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114 TDistanceUnit DefaultUnit() const; |
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115 |
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116 void ConstructUnitFieldL(); |
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117 |
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118 void ShowUnits(TBool aVisible); |
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119 |
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120 private: //data |
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121 TReal iMinimumValue; |
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122 TReal iMaximumValue; |
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123 |
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124 TDistanceUnit iLastUsedUnit; |
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125 |
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126 // Ref: |
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127 CEikMfneSymbol* iUnitsField; |
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128 }; |
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129 |
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130 #endif // CLmkDistanceEditor_h |
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131 |
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132 // End of File |
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