/// <summary>
/// Convert Html regular font-size to OpenXml font value (expressed in point).
/// </summary>
public static Unit ConvertToFontSize(string htmlSize)
{
if (htmlSize == null)
{
return(Unit.Empty);
}
switch (htmlSize.ToLowerInvariant())
{
case "1":
case "xx-small": return(new Unit(UnitMetric.Point, 10));
case "2":
case "x-small": return(new Unit(UnitMetric.Point, 15));
case "3":
case "small": return(new Unit(UnitMetric.Point, 20));
case "4":
case "medium": return(new Unit(UnitMetric.Point, 27));
case "5":
case "large": return(new Unit(UnitMetric.Point, 36));
case "6":
case "x-large": return(new Unit(UnitMetric.Point, 48));
case "7":
case "xx-large": return(new Unit(UnitMetric.Point, 72));
default:
// the font-size is specified in positive half-points
Unit unit = Unit.Parse(htmlSize);
if (!unit.IsValid || unit.Value <= 0)
{
return(Unit.Empty);
}
// this is a rough conversion to support some percent size, considering 100% = 11 pt
if (unit.Type == UnitMetric.Percent)
{
unit = new Unit(UnitMetric.Point, unit.Value * 0.11);
}
return(unit);
}
}
/// <summary>
/// Parse the margin style attribute.
/// </summary>
/// <remarks>
/// The margin property can have from one to four values.
/// <b>margin:25px 50px 75px 100px;</b>
/// top margin is 25px
/// right margin is 50px
/// bottom margin is 75px
/// left margin is 100px
///
/// <b>margin:25px 50px 75px;</b>
/// top margin is 25px
/// right and left margins are 50px
/// bottom margin is 75px
///
/// <b>margin:25px 50px;</b>
/// top and bottom margins are 25px
/// right and left margins are 50px
///
/// <b>margin:25px;</b>
/// all four margins are 25px
/// </remarks>
public static Margin Parse(String str)
{
if (str == null)
{
return(new Margin());
}
String[] parts = str.Split(HttpUtility.WhiteSpaces);
switch (parts.Length)
{
case 1:
{
Unit all = Unit.Parse(parts[0]);
return(new Margin(all, all, all, all));
}
case 2:
{
Unit u1 = Unit.Parse(parts[0]);
Unit u2 = Unit.Parse(parts[1]);
return(new Margin(u1, u2, u1, u2));
}
case 3:
{
Unit u1 = Unit.Parse(parts[0]);
Unit u2 = Unit.Parse(parts[1]);
Unit u3 = Unit.Parse(parts[2]);
return(new Margin(u1, u2, u3, u2));
}
case 4:
{
Unit u1 = Unit.Parse(parts[0]);
Unit u2 = Unit.Parse(parts[1]);
Unit u3 = Unit.Parse(parts[2]);
Unit u4 = Unit.Parse(parts[3]);
return(new Margin(u1, u2, u3, u4));
}
}
return(new Margin());
}
/// <summary>
/// Gets an attribute representing an unit: 120px, 10pt, 5em, 20%, ...
/// </summary>
/// <returns>If the attribute is misformed, the <see cref="Unit.IsValid"/> property is set to false.</returns>
public Unit GetAsUnit(String name)
{
return(Unit.Parse(this[name]));
}
