static LengthUnit()
{
_millimeter = new LengthUnit(((decimal)1) / 1000, "Millimeter", "mm");
_centimeter = new LengthUnit(((decimal)1) / 100, "Centimeter", "cm");
_mil = new LengthUnit(((decimal)254) / 10000000, "Mil", "mil");
_point = new LengthUnit(((decimal)254) / 720000, "Point", "pt");
_inch = new LengthUnit(((decimal)254) / 10000, "Inch", "\"");
_shortcutToUnit = new SortedDictionary<string, LengthUnit>();
_shortcutToUnit.Add(_millimeter.Shortcut, _millimeter);
_shortcutToUnit.Add(_centimeter.Shortcut, _centimeter);
_shortcutToUnit.Add(_mil.Shortcut, _mil);
_shortcutToUnit.Add(_point.Shortcut, _point);
_shortcutToUnit.Add(_inch.Shortcut, _inch);
// Alternative shortcuts
_shortcutToUnit.Add("Mil", _mil);
_shortcutToUnit.Add("Inch", _inch);
_shortcutToUnit.Add("inch", _inch);
_shortcuts = new List<string>();
foreach (string k in _shortcutToUnit.Keys)
_shortcuts.Add(k);
_shortcuts.Sort();
}
public double ConvertFrom(double fromlength, LengthUnit fromunit)
{
return fromlength * (double)(fromunit.UnitInMeter / this.UnitInMeter);
}
/// <summary>
/// Converts a value (unit: points) in a given unit and returns it as text together with the unit.
/// </summary>
/// <param name="value">Value of length in points.</param>
/// <param name="lastUnit">The unit to convert to.</param>
/// <returns>A text string: the value together with the unit.</returns>
public static string GetLengthMeasureText(double value, LengthUnit lastUnit)
{
double v = lastUnit.ConvertFrom(value, LengthUnit.Point);
return(GUIConversion.ToString(v, "G5") + " " + lastUnit.Shortcut);
}
public double ConvertFrom(double fromlength, LengthUnit fromunit)
{
return(fromlength * (double)(fromunit.UnitInMeter / this.UnitInMeter));
}
/// <summary>
/// Get a length value from a text string.
/// </summary>
/// <param name="txt">Text string. Consists of a number and optionally a unit.</param>
/// <param name="unit">Gives the default unit to use if the text string don't contain a unit.
/// On return, contains the unit actually used.</param>
/// <param name="value">On return, gives the actual length (unit:points).</param>
/// <returns>True if the conversion was successful, false otherwise.</returns>
public static bool GetLengthMeasureValue(
string txt,
ref LengthUnit unit,
ref double value)
{
txt = txt.Trim().ToLower();
LengthUnit tempUnit = unit;
foreach (string end in LengthUnit.Shortcuts)
{
if (txt.EndsWith(end))
{
tempUnit = LengthUnit.FromShortcut(end);
txt = txt.Substring(0, txt.Length - end.Length).TrimEnd();
break;
}
}
double v;
if (IsDouble(txt, out v))
{
value = LengthUnit.Point.ConvertFrom(v, tempUnit);
unit = tempUnit;
return true;
}
else
{
return false;
}
}
/// <summary>
/// Converts a value (unit: points) in a given unit and returns it as text together with the unit.
/// </summary>
/// <param name="value">Value of length in points.</param>
/// <param name="lastUnit">The unit to convert to.</param>
/// <returns>A text string: the value together with the unit.</returns>
public static string GetLengthMeasureText(double value, LengthUnit lastUnit)
{
double v = lastUnit.ConvertFrom(value, LengthUnit.Point);
return GUIConversion.ToString(v, "G5") + " " + lastUnit.Shortcut;
}
/// <summary>
/// Parse a string that ends with a length unit to return the length unit. The string is trimmed at the end before use.
/// </summary>
/// <param name="s">String to parse.</param>
/// <param name="lengthUnit">On success, returns the length unit parsed.</param>
/// <param name="remainder">On success, returns the part of the input string, which belongs not to the length unit.</param>
/// <returns>True if successfull, otherwise false.</returns>
public static bool TryParse(string s, out LengthUnit lengthUnit, out string remainder)
{
s = s.TrimEnd();
for (int i = _shortcuts.Count - 1; i >= 0; i--)
{
if (s.EndsWith(_shortcuts[i]))
{
lengthUnit = _shortcutToUnit[_shortcuts[i]];
remainder = s.Substring(0, s.Length - _shortcuts[i].Length);
return true;
}
}
lengthUnit = null;
remainder = null;
return false;
}
