1 /*

     2 * Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:    LandmarksUi Content File -    Distance editor for editor/viewer form

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 

    22 

    23 

    24 

    25 #ifndef CLmkDistanceEditor_h

    26 #define CLmkDistanceEditor_h

    27 

    28 //  INCLUDES

    29 #include "CLmkFloatEditor.h"

    30 #include "landmarks.hrh"

    31 

    32 /// FORWARD DECLARATION

    33 class CEikMfneSymbol;

    34 

    35 // CLASS DECLARATION

    36 

    37 /**

    38  *  CLmkDistanceEditor extends CLmkFloatEditor's functionality.

    39  *  Implements both metric and imperial units.

    40  *  Underlying floating value is just a value, which user inputs.

    41  *  Its limits depend on current unit.

    42  *  Number() method returns distance always in meters.

    43  */

    44 class CLmkDistanceEditor : public CLmkFloatEditor

    45     {

    46     public:

    47         // Constructors and destructor

    48         /**

    49          * Create CLmkDistanceEditor object

    50          * @return newly instantiated object

    51          */

    52         CLmkDistanceEditor();

    53 

    54         /**

    55          * Destructor.

    56          */

    57         virtual ~CLmkDistanceEditor();

    58 

    59     	/**

    60     	 * By default Symbian 2nd phase constructor

    61          * @param aMinimumValue

    62          * @param aMaximumValue

    63          * @param aInitialValue

    64          * @param aType

    65     	 */

    66     	void ConstructL(TReal32 aMinimumValue,

    67                         TReal32 aMaximumValue,

    68                         TReal32 aInitialValue);

    69 

    70     public: // From CLmkFloatEditor

    71 

    72         /** Sets value */

    73 	    void SetNumber(TReal aNumber);

    74 

    75         /** Gets value */

    76 	    TReal Number() const;

    77 

    78     protected: // From CLmkFloatEditor

    79 

    80         void HandleCustomFieldChanged(TInt aCustomFieldIndex);

    81 

    82         void HandleEnter();

    83         void HandleExit();

    84 

    85     protected: // new functions

    86 

    87         enum TDistanceUnit

    88         	{

    89         	EUnitNone,

    90         	EUnitMeters,

    91         	EUnitKilometers,

    92         	EUnitFeet,

    93         	EUnitMiles

    94         	};

    95 

    96         /** Converts from meters to given units */

    97         TReal32 MetersToUnits(

    98             TReal32 aMeters,

    99             TDistanceUnit aToUnits) const;

   100 

   101         /** Converts from given units to meters */

   102         TReal32 UnitsToMeters(

   103             TReal32 aValue,

   104             TDistanceUnit aFromUnits) const;

   105 

   106 

   107         /** Updates min and max limits in editor field according to

   108          *  current units

   109          */

   110         void UpdateValueLimits();

   111 

   112         void SetUnit(TDistanceUnit aUnit);

   113         TDistanceUnit Unit() const;

   114         TDistanceUnit DefaultUnit() const;

   115 

   116         void ConstructUnitFieldL();

   117 

   118         void ShowUnits(TBool aVisible);

   119 

   120     private: //data

   121         TReal   iMinimumValue;

   122         TReal   iMaximumValue;

   123 

   124         TDistanceUnit iLastUsedUnit;

   125 

   126         // Ref:

   127         CEikMfneSymbol* iUnitsField;

   128     };

   129 

   130 #endif      // CLmkDistanceEditor_h

   131 

   132 // End of File