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//
// System.Drawing.Printing.PrinterUnitConvert.cs
//
// Authors:
// Martin Willemoes Hansen (mwh@sysrq.dk)
// Herve Poussineau (hpoussineau@fr.st)
//
// (C) 2003 Martin Willemoes Hansen
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
namespace System.Drawing.Printing
{
public sealed class PrinterUnitConvert
{
private PrinterUnitConvert ()
{
}
public static double Convert (double value,
PrinterUnit fromUnit,
PrinterUnit toUnit)
{
switch (fromUnit)
{
case PrinterUnit.Display:
switch (toUnit)
{
case PrinterUnit.Display: return value;
case PrinterUnit.ThousandthsOfAnInch: return value * 10;
case PrinterUnit.HundredthsOfAMillimeter: return value * 25.4;
case PrinterUnit.TenthsOfAMillimeter: return value * 2.54;
}
break;
case PrinterUnit.ThousandthsOfAnInch:
switch (toUnit)
{
case PrinterUnit.Display: return value / 10;
case PrinterUnit.ThousandthsOfAnInch: return value;
case PrinterUnit.HundredthsOfAMillimeter: return value * 2.54;
case PrinterUnit.TenthsOfAMillimeter: return value * 0.254;
}
break;
case PrinterUnit.HundredthsOfAMillimeter:
switch (toUnit)
{
case PrinterUnit.Display: return value / 25.4;
case PrinterUnit.ThousandthsOfAnInch: return value / 2.54;
case PrinterUnit.HundredthsOfAMillimeter: return value;
case PrinterUnit.TenthsOfAMillimeter: return value / 10;
}
break;
case PrinterUnit.TenthsOfAMillimeter:
switch (toUnit)
{
case PrinterUnit.Display: return value / 2.54;
case PrinterUnit.ThousandthsOfAnInch: return value / 0.254;
case PrinterUnit.HundredthsOfAMillimeter: return value * 10;
case PrinterUnit.TenthsOfAMillimeter: return value;
}
break;
}
// should never happen
throw new NotImplementedException();
}
public static int Convert (int value,
PrinterUnit fromUnit,
PrinterUnit toUnit)
{
double rslt;
rslt = Convert ((double) value, fromUnit, toUnit);
return (int) Math.Round (rslt);
}
public static Margins Convert (Margins value,
PrinterUnit fromUnit,
PrinterUnit toUnit)
{
return new Margins(
Convert(value.Left, fromUnit, toUnit),
Convert(value.Right, fromUnit, toUnit),
Convert(value.Top, fromUnit, toUnit),
Convert(value.Bottom, fromUnit, toUnit));
}
public static Point Convert (Point value,
PrinterUnit fromUnit,
PrinterUnit toUnit)
{
return new Point(
Convert(value.X, fromUnit, toUnit),
Convert(value.Y, fromUnit, toUnit));
}
public static Rectangle Convert (Rectangle value,
PrinterUnit fromUnit,
PrinterUnit toUnit)
{
return new Rectangle(
Convert(value.X, fromUnit, toUnit),
Convert(value.Y, fromUnit, toUnit),
Convert(value.Width, fromUnit, toUnit),
Convert(value.Height, fromUnit, toUnit));
}
public static Size Convert (Size value,
PrinterUnit fromUnit,
PrinterUnit toUnit)
{
return new Size(
Convert(value.Width, fromUnit, toUnit),
Convert(value.Height, fromUnit, toUnit));
}
}
}
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