public static ColumnDefinitions FromString(String val)
{
var coll = new ColumnDefinitions();
if (val.StartsWith("Repeat"))
{
var regex = new Regex(@"^Repeat\((.+)\)$");
var match = regex.Match(val.Trim());
if (match.Groups.Count < 2)
{
throw new XamlException($"Invalid repeat value '{val}'");
}
var w = GridLength.FromString(match.Groups[1].Value.Trim());
var cd = new ColumnDefinition()
{
Width = new GridLength($"repeat(auto-fit, {w})")
};
coll.Add(cd);
}
else
{
foreach (var row in val.Split(','))
{
var cd = new ColumnDefinition()
{
Width = GridLength.FromString(row.Trim())
};
coll.Add(cd);
}
}
return(coll);
}
public override Object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
{
if (value == null)
{
return(null);
}
if (value is String)
{
String strVal = value.ToString();
return(GridLength.FromString(strVal));
}
throw new XamlException($"Invalid length value '{value}'");
}
public static RowDefinitions FromString(String val)
{
var coll = new RowDefinitions();
foreach (var row in val.Split(','))
{
var rd = new RowDefinition
{
Height = GridLength.FromString(row.Trim())
};
coll.Add(rd);
}
return(coll);
}
public static ColumnDefinitions FromString(String val)
{
var coll = new ColumnDefinitions();
foreach (var row in val.Split(','))
{
var cd = new ColumnDefinition
{
Width = GridLength.FromString(row.Trim())
};
coll.Add(cd);
}
return(coll);
}
public void When_Color_Thickness_GridLength_As_String()
{
var s = GetContent(nameof(When_Color_Thickness_GridLength_As_String));
var r = Windows.UI.Xaml.Markup.XamlReader.Load(s) as ContentControl;
Assert.AreEqual(Windows.UI.Colors.Red, r.Resources["Color01"]);
Assert.AreEqual(Windows.UI.Colors.Blue, (r.Resources["scb01"] as SolidColorBrush).Color);
Assert.AreEqual(new Thickness(42), r.Resources["thickness"]);
Assert.AreEqual(new CornerRadius(42), r.Resources["cornerRadius"]);
Assert.AreEqual("TestFamily", (r.Resources["fontFamily"] as FontFamily).Source);
Assert.AreEqual(GridLength.FromString("42"), r.Resources["gridLength"]);
Assert.AreEqual(Windows.UI.Xaml.Media.Animation.KeyTime.FromTimeSpan(TimeSpan.Parse("1:2:3")), r.Resources["keyTime"]);
Assert.AreEqual(new Duration(TimeSpan.Parse("1:2:3")), r.Resources["duration"]);
Assert.AreEqual(Matrix.Identity, r.Resources["matrix"]);
Assert.AreEqual(Windows.UI.Text.FontWeights.Bold, r.Resources["fontWeight"]);
Assert.AreEqual(Windows.UI.Colors.Red, ((r.Content as Grid)?.Background as SolidColorBrush).Color);
}
public static GridLength FromString(String strVal)
{
Double dblVal = 0;
if (strVal == "Auto")
{
return(new GridLength("auto"));
}
else if (strVal.StartsWith("MinMax"))
{
var re = new Regex(@"MinMax\(([\w\.]+[%\*\.]?);([\w\.]+[%\*\.]?)\)");
var match = re.Match(strVal.Replace(" ", String.Empty));
if (match.Groups.Count != 3)
{
throw new XamlException($"Invalid grid length value '{strVal}'");
}
GridLength gl1 = GridLength.FromString(match.Groups[1].Value);
GridLength gl2 = GridLength.FromString(match.Groups[2].Value);
return(new GridLength($"minmax({gl1.ToString()},{gl2.ToString()})"));
}
else if (Length.IsValidLength(strVal))
{
return new GridLength()
{
Value = strVal
}
}
;
if (strVal.EndsWith("*"))
{
return(new GridLength(strVal.Trim().Replace("*", "fr")));
}
else if (Double.TryParse(strVal, out dblVal))
{
return(new GridLength(strVal + "px"));
}
throw new XamlException($"Invalid grid length value '{strVal}'");
}
}
