1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // Converts logical coordinate value to physical coordinate value.

    15 // Then adjusts the value, assuming that it must be within the drawing rectangle.

    16 // The first, "<0" check is arguable - should it be there or not!?

    17 // Because it HIDES negative values of "x" coordinate, so possible programmer's errors!

    18 // But with used logical to physical transformation it is possible that some logical

    19 // coordinate value might be transformed to negative physical coordinate value and 

    20 // then it has to be checked and set to 0.

    21 // 

    22 //

    23 

    24 inline TInt Log2Phys(TInt aCoordVal, TInt aScalingOrigin, TInt aScalingFactor, TInt aSize) 

    25 	{

    26 	aCoordVal = aScalingOrigin + aCoordVal * aScalingFactor;

    27 	return aCoordVal < 0 ? 0 : aCoordVal >= aSize ? (aSize - 1) : aCoordVal;

    28 	}

    29 

    30 //Converts logical coordinate value to physical coordinate value.

    31 //Then adjusts the value, assuming that it represents right-bottom coordinate of the logical 

    32 //rectangle. The first, "<0" check is arguable - should it be there or not!?

    33 //Because it HIDES negative values of "x" coordinate, so possible programmer's errors!

    34 //But with used logical to physical transformation it is possible that some logical

    35 //coordinate value is transformed to negative physical coordinate value and then it has to

    36 //be checked and set to 0.

    37 inline TInt RBtmLog2Phys(TInt aCoordVal, TInt aScalingOrigin, TInt aScalingFactor, TInt aSize) 

    38 	{

    39 	aCoordVal = aScalingOrigin + aCoordVal * aScalingFactor;

    40 	return aCoordVal < 0 ? 0 : aCoordVal > aSize ? aSize : aCoordVal;

    41 	}

    42