sl@0: // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // Converts logical coordinate value to physical coordinate value.
sl@0: // Then adjusts the value, assuming that it must be within the drawing rectangle.
sl@0: // The first, "<0" check is arguable - should it be there or not!?
sl@0: // Because it HIDES negative values of "x" coordinate, so possible programmer's errors!
sl@0: // But with used logical to physical transformation it is possible that some logical
sl@0: // coordinate value might be transformed to negative physical coordinate value and 
sl@0: // then it has to be checked and set to 0.
sl@0: // 
sl@0: //
sl@0: 
sl@0: inline TInt Log2Phys(TInt aCoordVal, TInt aScalingOrigin, TInt aScalingFactor, TInt aSize) 
sl@0: 	{
sl@0: 	aCoordVal = aScalingOrigin + aCoordVal * aScalingFactor;
sl@0: 	return aCoordVal < 0 ? 0 : aCoordVal >= aSize ? (aSize - 1) : aCoordVal;
sl@0: 	}
sl@0: 
sl@0: //Converts logical coordinate value to physical coordinate value.
sl@0: //Then adjusts the value, assuming that it represents right-bottom coordinate of the logical 
sl@0: //rectangle. The first, "<0" check is arguable - should it be there or not!?
sl@0: //Because it HIDES negative values of "x" coordinate, so possible programmer's errors!
sl@0: //But with used logical to physical transformation it is possible that some logical
sl@0: //coordinate value is transformed to negative physical coordinate value and then it has to
sl@0: //be checked and set to 0.
sl@0: inline TInt RBtmLog2Phys(TInt aCoordVal, TInt aScalingOrigin, TInt aScalingFactor, TInt aSize) 
sl@0: 	{
sl@0: 	aCoordVal = aScalingOrigin + aCoordVal * aScalingFactor;
sl@0: 	return aCoordVal < 0 ? 0 : aCoordVal > aSize ? aSize : aCoordVal;
sl@0: 	}
sl@0: