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incorporate Measurement / MeasurementUnit into MBS.Framework.Drawing

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Michael Becker 2020-09-20 01:07:28 -04:00
parent 067fcdc29b
commit 72ab8dddd3
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235
MBS.Framework/Drawing/Measurement.cs Normal file
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//
// Measurement.cs - represents a tuple of a numeric value and a unit of measure
//
// Author:
// Michael Becker <alcexhim@gmail.com>
//
// Copyright (c) 2011-2020 Mike Becker's Software
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
using System;
namespace MBS.Framework.Drawing
{
/// <summary>
/// Represents a tuple of a numeric value and a unit of measure.
/// </summary>
public struct Measurement
{
public static readonly Measurement Empty;
public Measurement(double value, MeasurementUnit unit)
{
mvarUnit = unit;
mvarValue = value;
mvarIsFull = true;
}
private double mvarValue;
public double Value { get { return mvarValue; } set { mvarValue = value; } }
private MeasurementUnit mvarUnit;
public MeasurementUnit Unit { get { return mvarUnit; } set { mvarUnit = value; } }
private bool mvarIsFull;
public bool IsEmpty { get { return !mvarIsFull; } }
public static Measurement Parse(string value)
{
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;
}
return new Measurement(val, unit);
}
public double GetValue(MeasurementUnit unit = MeasurementUnit.Pixel, int dpi = 96, Rectangle parentRect = default(Rectangle))
{
if (Unit == unit)
return Value;
double conversionFactor = GetConversionFactor(Unit, unit, dpi, parentRect);
return Value * (1 / conversionFactor);
}
private double GetConversionFactor(MeasurementUnit unit1, MeasurementUnit unit2, int dpi, Rectangle parentRect)
{
if (unit1 == unit2)
return 1.0;
switch (unit1)
{
case MeasurementUnit.Cm:
{
switch (unit2)
{
case MeasurementUnit.Em:
{
break;
}
case MeasurementUnit.Ex:
{
break;
}
case MeasurementUnit.Inch:
{
return 0.393701;
}
case MeasurementUnit.Mm:
{
return 10;
}
case MeasurementUnit.Percentage:
{
break;
}
case MeasurementUnit.Pica:
{
return 2.36222;
}
case MeasurementUnit.Pixel:
{
// 1 in = 2.54 cm
return 2.54 / dpi;
}
case MeasurementUnit.Point:
{
return 28.3464567;
}
}
break;
}
case MeasurementUnit.Em:
break;
case MeasurementUnit.Ex:
break;
case MeasurementUnit.Inch:
{
switch (unit2)
{
case MeasurementUnit.Cm:
{
return 2.54;
}
case MeasurementUnit.Em:
{
break;
}
case MeasurementUnit.Ex:
{
break;
}
case MeasurementUnit.Mm:
{
return 25.4;
}
case MeasurementUnit.Percentage:
{
break;
}
case MeasurementUnit.Pica:
{
return 6.00005;
}
case MeasurementUnit.Pixel:
{
// 1 in = 2.54 cm
return dpi;
}
case MeasurementUnit.Point:
{
return 72;
}
}
break;
}
case MeasurementUnit.Pixel:
{
switch (unit2)
{
case MeasurementUnit.Inch:
{
return 1 / dpi;
}
case MeasurementUnit.Cm:
{
return dpi / 2.54;
}
case MeasurementUnit.Em:
{
break;
}
case MeasurementUnit.Ex:
{
break;
}
case MeasurementUnit.Mm:
{
return dpi / 25.4;
}
case MeasurementUnit.Percentage:
{
break;
}
case MeasurementUnit.Pica:
{
return dpi / 6.00005;
}
case MeasurementUnit.Pixel:
{
return 1.0;
}
case MeasurementUnit.Point:
{
return 72;
}
}
break;
}
}
throw new NotSupportedException();
}
public static Measurement operator -(Measurement left, Measurement right)
{
return new Measurement((left.Value - right.GetValue(left.Unit)), left.Unit);
}
public static Measurement operator +(Measurement left, Measurement right)
{
return new Measurement((left.Value + right.GetValue(left.Unit)), left.Unit);
}
public static Measurement operator /(Measurement left, Measurement right)
{
return new Measurement((left.Value / right.GetValue(left.Unit)), left.Unit);
}
public static Measurement operator *(Measurement left, Measurement right)
{
return new Measurement((left.Value * right.GetValue(left.Unit)), left.Unit);
}
}
}

48
MBS.Framework/Drawing/MeasurementUnit.cs Normal file
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//
// MeasurementUnit.cs - indicates the unit of a Measurement
//
// Author:
// Michael Becker <alcexhim@gmail.com>
//
// Copyright (c) 2011-2020 Mike Becker's Software
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
namespace MBS.Framework.Drawing
{
/// <summary>
/// Indicates the unit of a <see cref="Measurement" />.
/// </summary>
public enum MeasurementUnit
{
/// <summary>Measurement is in pixels.</summary>
Pixel = 1,
/// <summary>Measurement is in points. A point represents 1/72 of an inch.</summary>
Point,
/// <summary>Measurement is in picas. A pica represents 12 points.</summary>
Pica,
/// <summary>Measurement is in inches.</summary>
Inch,
/// <summary>Measurement is in millimeters.</summary>
Mm,
/// <summary>Measurement is in centimeters.</summary>
Cm,
/// <summary>Measurement is a percentage relative to the parent element.</summary>
Percentage,
/// <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
}
}

3
MBS.Framework/MBS.Framework.csproj
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@ -71,6 +71,9 @@
<Compile Include="IO\File.cs" />
<Compile Include="IO\CaseSensitiveHandling.cs" />
<Compile Include="MemsetExtension.cs" />
<Compile Include="Drawing\Measurement.cs" />
<Compile Include="Drawing\MeasurementUnit.cs" />
<Compile Include="NumericStringSplitter.cs" />
</ItemGroup>
<ItemGroup>
<Folder Include="Logic\" />

109
MBS.Framework/NumericStringSplitter.cs Normal file
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//
// NumericStringSplitter.cs - provides functions for splitting a string containing numbers into string and number components
//
// Author:
// Michael Becker <alcexhim@gmail.com>
//
// Copyright (c) 2011-2020 Mike Becker's Software
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
using System;
namespace MBS.Framework
{
public struct IntStringSplitterResult
{
private int mvarIntegerPart;
public int IntegerPart { get { return mvarIntegerPart; } }
private string mvarStringPart;
public string StringPart { get { return mvarStringPart; } }
public IntStringSplitterResult(int integerPart, string stringPart)
{
mvarIntegerPart = integerPart;
mvarStringPart = stringPart;
}
}
public struct DoubleStringSplitterResult
{
private double mvarDoublePart;
public double DoublePart { get { return mvarDoublePart; } }
private string mvarStringPart;
public string StringPart { get { return mvarStringPart; } }
public DoubleStringSplitterResult(double doublePart, string stringPart)
{
mvarDoublePart = doublePart;
mvarStringPart = stringPart;
}
}
public static class NumericStringSplitter
{
public static IntStringSplitterResult SplitIntStringParts(this string value)
{
return SplitIntStringParts(value, 0);
}
public static IntStringSplitterResult SplitIntStringParts(this string value, int start)
{
string intval = String.Empty;
string strval = String.Empty;
int i = start;
for (i = start; i < value.Length; i++)
{
if (value[i] >= '0' && value[i] <= '9')
{
intval += value[i];
}
else
{
break;
}
}
strval = value.Substring(i);
int realintval = Int32.Parse(intval);
return new IntStringSplitterResult(realintval, strval);
}
public static DoubleStringSplitterResult SplitDoubleStringParts(this string value)
{
return SplitDoubleStringParts(value, 0);
}
public static DoubleStringSplitterResult SplitDoubleStringParts(this string value, int start)
{
string intval = String.Empty;
string strval = String.Empty;
int i = start;
for (i = start; i < value.Length; i++)
{
if (value[i] == '.' || (value[i] >= '0' && value[i] <= '9'))
{
intval += value[i];
}
else
{
break;
}
}
strval = value.Substring(i);
double realintval = Double.Parse(intval);
return new DoubleStringSplitterResult(realintval, strval);
}
}
}