class/System.Drawing/System.Drawing.Printing/PrinterUnitConvert.cs

   1 //
   2 // System.Drawing.Printing.PrinterUnitConvert.cs
   3 //
   4 // Authors:
   5 //   Martin Willemoes Hansen (mwh@sysrq.dk)
   6 //   Herve Poussineau (hpoussineau@fr.st)
   7 //
   8 // (C) 2003 Martin Willemoes Hansen
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 namespace System.Drawing.Printing
  35 {
  36         public sealed class PrinterUnitConvert
  37         {
  38                 private PrinterUnitConvert ()
  39                 {
  40                 }
  41
  42                 public static double Convert (double value,
  43                                               PrinterUnit fromUnit,
  44                                               PrinterUnit toUnit)
  45                 {
  46                         switch (fromUnit)
  47                         {
  48                                 case PrinterUnit.Display:
  49                                         switch (toUnit)
  50                                         {
  51                                                 case PrinterUnit.Display: return value;
  52                                                 case PrinterUnit.ThousandthsOfAnInch: return value * 10;
  53                                                 case PrinterUnit.HundredthsOfAMillimeter: return value * 25.4;
  54                                                 case PrinterUnit.TenthsOfAMillimeter: return value * 2.54;
  55                                         }
  56                                         break;
  57                                 case PrinterUnit.ThousandthsOfAnInch:
  58                                         switch (toUnit)
  59                                         {
  60                                                 case PrinterUnit.Display: return value / 10;
  61                                                 case PrinterUnit.ThousandthsOfAnInch: return value;
  62                                                 case PrinterUnit.HundredthsOfAMillimeter: return value * 2.54;
  63                                                 case PrinterUnit.TenthsOfAMillimeter: return value * 0.254;
  64                                         }
  65                                         break;
  66                                 case PrinterUnit.HundredthsOfAMillimeter:
  67                                         switch (toUnit)
  68                                         {
  69                                                 case PrinterUnit.Display: return value / 25.4;
  70                                                 case PrinterUnit.ThousandthsOfAnInch: return value / 2.54;
  71                                                 case PrinterUnit.HundredthsOfAMillimeter: return value;
  72                                                 case PrinterUnit.TenthsOfAMillimeter: return value / 10;
  73                                         }
  74                                         break;
  75                                 case PrinterUnit.TenthsOfAMillimeter:
  76                                         switch (toUnit)
  77                                         {
  78                                                 case PrinterUnit.Display: return value / 2.54;
  79                                                 case PrinterUnit.ThousandthsOfAnInch: return value / 0.254;
  80                                                 case PrinterUnit.HundredthsOfAMillimeter: return value * 10;
  81                                                 case PrinterUnit.TenthsOfAMillimeter: return value;
  82                                         }
  83                                         break;
  84                         }
  85                         // should never happen
  86                         throw new NotImplementedException();
  87                 }
  88
  89                 public static int Convert (int value,
  90                                            PrinterUnit fromUnit,
  91                                            PrinterUnit toUnit)
  92                 {
  93                         double rslt;
  94                         rslt = Convert ((double) value, fromUnit, toUnit);
  95                         return (int) Math.Round (rslt);
  96
  97                 }
  98
  99                 public static Margins Convert (Margins value,
 100                                                PrinterUnit fromUnit,
 101                                                PrinterUnit toUnit)
 102                 {
 103                         return new Margins(
 104                                 Convert(value.Left, fromUnit, toUnit),
 105                                 Convert(value.Right, fromUnit, toUnit),
 106                                 Convert(value.Top, fromUnit, toUnit),
 107                                 Convert(value.Bottom, fromUnit, toUnit));
 108                 }
 109
 110                 public static Point Convert (Point value,
 111                                              PrinterUnit fromUnit,
 112                                              PrinterUnit toUnit)
 113                 {
 114                         return new Point(
 115                                 Convert(value.X, fromUnit, toUnit),
 116                                 Convert(value.Y, fromUnit, toUnit));
 117                 }
 118
 119                 public static Rectangle Convert (Rectangle value,
 120                                                  PrinterUnit fromUnit,
 121                                                  PrinterUnit toUnit)
 122                 {
 123                         return new Rectangle(
 124                                 Convert(value.X, fromUnit, toUnit),
 125                                 Convert(value.Y, fromUnit, toUnit),
 126                                 Convert(value.Width, fromUnit, toUnit),
 127                                 Convert(value.Height, fromUnit, toUnit));
 128                 }
 129
 130                 public static Size Convert (Size value,
 131                                             PrinterUnit fromUnit,
 132                                             PrinterUnit toUnit)
 133                 {
 134                         return new Size(
 135                                 Convert(value.Width, fromUnit, toUnit),
 136                                 Convert(value.Height, fromUnit, toUnit));
 137                 }
 138         }
 139 }