--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/lcdui_akn/lcdgd/src/lcdgdrvutil.cpp	Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,68 @@
+/*
+* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+
+#include <e32std.h>
+#include "lcdgdrvutil.h"
+
+/**
+ * Calculate rational increment stepping in positive y direction.
+ *
+ *@param aDx difference in x coordinates of edge end points
+ *@param aDy difference in y coordinates of edge end points, always positive (y sorted vertices)
+ *@return aIx integer increment
+ *@return aIf positive fractional increment with denominator aDy
+ *
+ */
+void Increment(TInt& aIx, TInt& aIf, TInt aDx, TInt aDy)
+{
+    ASSERT(aDy > 0);
+
+    TInt ip = aDx / aDy;
+    TInt fp = aDx % aDy;
+
+    if (fp < 0)
+    {
+        aIx = ip - 1;
+        aIf = fp + aDy;
+    }
+    else
+    {
+        aIx = ip;
+        aIf = fp;
+    }
+}
+
+void Increment(TInt64& aIx, TInt64& aIf, TInt64 aDx, TInt64 aDy)
+{
+    ASSERT(aDy > 0);
+
+    TInt64 ip = aDx / aDy;
+    TInt64 fp = aDx % aDy;
+
+    if (fp < 0)
+    {
+        aIx = ip - 1;
+        aIf = fp + aDy;
+    }
+    else
+    {
+        aIx = ip;
+        aIf = fp;
+    }
+}
+