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".
8 // Initial Contributors:
9 // Nokia Corporation - initial contribution.
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.
24 inline TInt Log2Phys(TInt aCoordVal, TInt aScalingOrigin, TInt aScalingFactor, TInt aSize)
26 aCoordVal = aScalingOrigin + aCoordVal * aScalingFactor;
27 return aCoordVal < 0 ? 0 : aCoordVal >= aSize ? (aSize - 1) : aCoordVal;
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)
39 aCoordVal = aScalingOrigin + aCoordVal * aScalingFactor;
40 return aCoordVal < 0 ? 0 : aCoordVal > aSize ? aSize : aCoordVal;