public override object ConvertFromString(string value, IValueSerializerContext context)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
return(Int32Rect.Parse(value));
}
/// <summary>Converts a <see cref="T:System.String" /> into a <see cref="T:System.Windows.Int32Rect" />.</summary>
/// <returns>A new instance of <see cref="T:System.Windows.Int32Rect" /> based on the supplied <paramref name="value" />.</returns>
/// <param name="value">The string to convert.</param>
/// <param name="context">Context information that is used for conversion.</param>
public override object ConvertFromString(string value, IValueSerializerContext context)
{
if (value != null)
{
return(Int32Rect.Parse(value));
}
return(base.ConvertFromString(value, context));
}
public override object ConvertFromString(string value, IValueSerializerContext context)
{
if (value == null)
{
throw new NotSupportedException("value != null");
}
return(Int32Rect.Parse(value));
}
/// <summary>Attempts to convert the specified type to an <see cref="T:System.Windows.Int32Rect" />.</summary>
/// <returns>The <see cref="T:System.Windows.Int32Rect" /> created from converting <paramref name="value" />.</returns>
/// <param name="context">Provides contextual information required for conversion.</param>
/// <param name="culture">Cultural information to respect during conversion.</param>
/// <param name="value">The object being converted.</param>
/// <exception cref="T:System.NotSupportedException">Thrown if the specified object is NULL or is a type that cannot be converted to an <see cref="T:System.Windows.Int32Rect" />.</exception>
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
if (value == null)
{
throw GetConvertFromException(value);
}
string text = value as string;
if (text != null)
{
return(Int32Rect.Parse(text));
}
return(base.ConvertFrom(context, culture, value));
}
public void ParseNegative()
{
Int32Rect.Parse("1, 2, -3, -4");
}
public void Parse()
{
Int32Rect r = Int32Rect.Parse("1, 2, 3, 4");
Assert.AreEqual(new Int32Rect(1, 2, 3, 4), r);
}
public ErrorCode ReadFrom(Uri requestUri, IEnumerable <KeyValuePair <string, string> > queryNameValuePairs)
{
foreach (var item in queryNameValuePairs)
{
switch (item.Key)
{
case "s":
{
var s = item.Value;
if (s.StartsWith("//"))
{
s = requestUri.Scheme + ":" + s;
}
if (!Uri.TryCreate(s, UriKind.Absolute, out Source))
{
return(ErrorCode.SourceUriFormatError);
}
}
break;
case "q":
int quality;
if (!TryConvert(item.Value, out quality))
{
return(ErrorCode.QualityParseError);
}
if (!(0 <= quality && quality <= 100))
{
return(ErrorCode.QualityOutOfRange);
}
Quality = quality;
break;
case "w":
int pixelWidth;
if (!TryConvert(item.Value, out pixelWidth))
{
return(ErrorCode.PixelWidthParseError);
}
if (pixelWidth < 0)
{
return(ErrorCode.PixelWidthOutOfRange);
}
PixelWidth = pixelWidth;
break;
case "h":
int pixelHeight;
if (!TryConvert(item.Value, out pixelHeight))
{
return(ErrorCode.PixelHeightParseError);
}
if (pixelHeight < 0)
{
return(ErrorCode.PixelHeightOutOfRange);
}
PixelHeight = pixelHeight;
break;
case "t":
ImageType type;
if (!Enum.TryParse(item.Value, true, out type))
{
return(ErrorCode.ImageTypeParseError);
}
if (type == 0)
{
return(ErrorCode.ImageTypeOutOfRange);
}
Type = type;
break;
case "c":
if (item.Value == "smart")
{
CropSmart = true;
break;
}
// the crop rectange is in percentages,
// based on the source image dimension
// we use this to get the actual crop
Int32Rect crop;
try
{
crop = Int32Rect.Parse(item.Value);
}
catch (Exception)
{
return(ErrorCode.CropRectParseError);
}
if (!((0 <= (crop.X + crop.Width)) & (crop.X + crop.Width) <= 100))
{
return(ErrorCode.CropRectOutOfRange);
}
if (!((0 <= (crop.Y + crop.Height)) & (crop.Y + crop.Height) <= 100))
{
return(ErrorCode.CropRectOutOfRange);
}
Crop = crop;
break;
case "f":
FittingType fit;
if (!Enum.TryParse(item.Value, true, out fit))
{
return(ErrorCode.FittingTypeParseError);
}
Fit = fit;
break;
case "bg-color":
try
{
if (HexPattern.IsMatch(item.Value))
{
var s = item.Value;
if (s.Length == 3)
{
// shorthand #fc0 -> #ffcc00
s = s.Substring(0, 1) + s.Substring(0, 1)
+ s.Substring(1, 1) + s.Substring(1, 1)
+ s.Substring(2, 1) + s.Substring(2, 1)
;
}
BackgroundColor = (Color)ColorConverter.ConvertFromString("#" + item.Value);
}
else
{
BackgroundColor = (Color)ColorConverter.ConvertFromString(item.Value);
}
}
catch (Exception)
{
return(ErrorCode.BackgroundColorParseError);
}
break;
case "debug":
{
IsDebug = item.Value == "1";
break;
}
}
}
if (Source == null)
{
return(ErrorCode.SourceIsRequired);
}
return(ErrorCode.None);
}
