diff options
Diffstat (limited to 'Xamarin.Forms.Core/BoundsTypeConverter.cs')
-rw-r--r-- | Xamarin.Forms.Core/BoundsTypeConverter.cs | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core/BoundsTypeConverter.cs b/Xamarin.Forms.Core/BoundsTypeConverter.cs new file mode 100644 index 00000000..549b7b63 --- /dev/null +++ b/Xamarin.Forms.Core/BoundsTypeConverter.cs @@ -0,0 +1,42 @@ +using System; +using System.Globalization; + +namespace Xamarin.Forms +{ + public class BoundsTypeConverter : TypeConverter + { + public override object ConvertFromInvariantString(string value) + { + if (value != null) + { + double x = -1, y = -1, w = -1, h = -1; + string[] xywh = value.Split(','); + bool hasX, hasY, hasW, hasH; + + hasX = (xywh.Length == 2 || xywh.Length == 4) && double.TryParse(xywh[0], NumberStyles.Number, CultureInfo.InvariantCulture, out x); + hasY = (xywh.Length == 2 || xywh.Length == 4) && double.TryParse(xywh[1], NumberStyles.Number, CultureInfo.InvariantCulture, out y); + hasW = xywh.Length == 4 && double.TryParse(xywh[2], NumberStyles.Number, CultureInfo.InvariantCulture, out w); + hasH = xywh.Length == 4 && double.TryParse(xywh[3], NumberStyles.Number, CultureInfo.InvariantCulture, out h); + + if (!hasW && xywh.Length == 4 && string.Compare("AutoSize", xywh[2].Trim(), StringComparison.OrdinalIgnoreCase) == 0) + { + hasW = true; + w = AbsoluteLayout.AutoSize; + } + + if (!hasH && xywh.Length == 4 && string.Compare("AutoSize", xywh[3].Trim(), StringComparison.OrdinalIgnoreCase) == 0) + { + hasH = true; + h = AbsoluteLayout.AutoSize; + } + + if (hasX && hasY && xywh.Length == 2) + return new Rectangle(x, y, AbsoluteLayout.AutoSize, AbsoluteLayout.AutoSize); + if (hasX && hasY && hasW && hasH && xywh.Length == 4) + return new Rectangle(x, y, w, h); + } + + throw new InvalidOperationException(string.Format("Cannot convert \"{0}\" into {1}", value, typeof(Rectangle))); + } + } +}
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