alcetech/framework-legacy
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

enhancements to Measurement class and adding new (but not necessarily convertible) MeasurementUnits

Browse Source
This commit is contained in:
Michael Becker 2021-05-22 02:19:06 -04:00
parent 6866c3038f
commit fa2024074e
No known key found for this signature in database
GPG Key ID: 98C333A81F18C22C
2 changed files with 73 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

82
MBS.Framework/Drawing/Measurement.cs
View File

@ -20,6 +20,7 @@
// along with this program. If not, see <http://www.gnu.org/licenses/>.
using System;
using MBS.Framework.Collections.Generic;
namespace MBS.Framework.Drawing
{
@ -43,27 +44,75 @@ namespace MBS.Framework.Drawing
private bool mvarIsFull;
public bool IsEmpty { get { return !mvarIsFull; } }
public override bool Equals(object obj)
{
if (!(obj is Measurement))
return false;
if (((Measurement)obj).Value.Equals(Value) && (((Measurement)obj).Unit == Unit))
return true;
return base.Equals(obj);
}
public static bool operator == (Measurement left, Measurement right)
{
return (left.Equals(right));
}
public static bool operator != (Measurement left, Measurement right)
{
return (!left.Equals(right));
}
public static Measurement Parse(string value)
{
if (value == null)
return Measurement.Empty;
DoubleStringSplitterResult dssr = NumericStringSplitter.SplitDoubleStringParts(value);
double val = dssr.DoublePart;
MeasurementUnit unit;
switch (dssr.StringPart.ToLower())
{
case "cm": unit = MeasurementUnit.Cm; break;
case "em": unit = MeasurementUnit.Em; break;
case "ex": unit = MeasurementUnit.Ex; break;
case "in": unit = MeasurementUnit.Inch; break;
case "mm": unit = MeasurementUnit.Mm; break;
case "%": unit = MeasurementUnit.Percentage; break;
case "pc": unit = MeasurementUnit.Pica; break;
case "px": unit = MeasurementUnit.Pixel; break;
case "pt": unit = MeasurementUnit.Point; break;
default: unit = MeasurementUnit.Pixel; break;
}
MeasurementUnit unit = MeasurementUnitFromString(dssr.StringPart);
return new Measurement(val, unit);
}
static Measurement()
{
RegisterMeasurementUnit(MeasurementUnit.Cm, "cm");
RegisterMeasurementUnit(MeasurementUnit.Em, "em");
RegisterMeasurementUnit(MeasurementUnit.Ex, "ex");
RegisterMeasurementUnit(MeasurementUnit.Inch, "in");
RegisterMeasurementUnit(MeasurementUnit.Mm, "mm");
RegisterMeasurementUnit(MeasurementUnit.Percentage, "%");
RegisterMeasurementUnit(MeasurementUnit.Pica, "pc");
RegisterMeasurementUnit(MeasurementUnit.Pixel, "px");
RegisterMeasurementUnit(MeasurementUnit.Point, "pt");
RegisterMeasurementUnit(MeasurementUnit.Degrees, "deg");
RegisterMeasurementUnit(MeasurementUnit.Radians, "rad");
RegisterMeasurementUnit(MeasurementUnit.Gradians, "grad");
}
private static BidirectionalDictionary<MeasurementUnit, string> _measurementUnits = new BidirectionalDictionary<MeasurementUnit, string>();
private static void RegisterMeasurementUnit(MeasurementUnit unit, string value)
{
_measurementUnits.Add(unit, value);
}
public static MeasurementUnit MeasurementUnitFromString(string value)
{
if (_measurementUnits.ContainsValue2(value))
return _measurementUnits.GetValue1(value);
throw new ArgumentException("must be a known MeasurementUnit abbreviation value", nameof(value));
}
public static string MeasurementUnitToString(MeasurementUnit unit)
{
if (_measurementUnits.ContainsValue1(unit))
return _measurementUnits.GetValue2(unit);
throw new ArgumentException("must be a known MeasurementUnit enumeration value", nameof(unit));
}
public double GetValue(MeasurementUnit unit = MeasurementUnit.Pixel, int dpi = 96, Rectangle parentRect = default(Rectangle))
{
if (Unit == unit)
@ -228,5 +277,10 @@ namespace MBS.Framework.Drawing
{
return new Measurement((left.Value * right.GetValue(left.Unit)), left.Unit);
}
public override string ToString()
{
return String.Format("{0}{1}", Value, MeasurementUnitToString(Unit));
}
}
}

6
MBS.Framework/Drawing/MeasurementUnit.cs
View File

@ -43,6 +43,10 @@ namespace MBS.Framework.Drawing
/// <summary>Measurement is relative to the height of the parent element's font.</summary>
Em,
/// <summary>Measurement is relative to the height of the lowercase letter x of the parent element's font.</summary>
Ex
Ex,
Degrees,
Radians,
Gradians
}
}