private static IStyle GetDefaultStyle(theme theme)
{
string style = "";
switch (GetThemeType(theme))
{
case ThemeType.Custom:
style = ((themeCustom)theme.Item).defaultStyle;
break;
case ThemeType.Categorial:
style = ((themeCategory)theme.Item).defaultStyle;
break;
case ThemeType.Gradient:
break;
case ThemeType.Quantity:
style = ((themeQuantity)theme.Item).defaultStyle;
break;
default:
throw new ArgumentOutOfRangeException();
}
return((style != string.Empty) ? (IStyle)GetStyleConverter().ConvertFrom(style) : null);
}
private static CustomTheme GetCustomTheme(theme theme)
{
return(new CustomTheme(null)
{
DefaultStyle = GetDefaultStyle(theme)
});
}
private static CategorialTheme GetCategorialTheme(theme theme)
{
var themeCategory = (themeCategory)theme.Item;
var defaultStyle = GetDefaultStyle(theme);
var categorialTheme = new CategorialTheme(themeCategory.columnName, defaultStyle);
foreach (themeItem catThemeItem in themeCategory.categoryThemeItems)
{
var categorialThemeItem = new CategorialThemeItem(catThemeItem.label, GetStyle(catThemeItem), null);
categorialTheme.AddThemeItem(categorialThemeItem);
}
return(categorialTheme);
}
/// <summary>
/// Converts from a a <see cref="SharpMap"/> <see cref="ITheme"/> object to a XML-like string
/// </summary>
/// <param name="context"></param>
/// <param name="culture"></param>
/// <param name="value"></param>
/// <param name="destinationType"></param>
/// <returns></returns>
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (!(value is ITheme) || !destinationType.Equals(typeof(string)))
{
// Use the base converter if the target type is unsupported
return(base.ConvertTo(context, culture, value, destinationType));
}
// Get the ITheme to convert from
var to = new theme();
var from = (ITheme)value;
switch (GetThemeType(from))
{
case ThemeType.Custom:
to.Item = GetThemeCustom((CustomTheme)from);
break;
case ThemeType.Categorial:
to.Item = GetThemeCategorial((CategorialTheme)from);
break;
case ThemeType.Gradient:
to.Item = GetThemeGradient((GradientTheme)from);
break;
case ThemeType.Quantity:
to.Item = GetThemeQuantity((QuantityTheme)from);
break;
default:
throw new ArgumentOutOfRangeException();
}
// Return the theme classes as an xml data string
var sb = new StringBuilder();
var xml = new XmlSerializer(typeof(theme));
xml.Serialize(new StringWriter(sb), to);
return(sb.ToString());
}
private static GradientTheme GetGradientTheme(theme theme)
{
var themeGradient = (themeGradient)theme.Item;
var minStyle = (IStyle)GetStyleConverter().ConvertFrom(themeGradient.minStyle);
var maxStyle = (IStyle)GetStyleConverter().ConvertFrom(themeGradient.maxStyle);
var gradTheme = new GradientTheme(themeGradient.columnName,
themeGradient.minValue,
themeGradient.maxValue,
minStyle,
maxStyle,
// Color blend properties
(themeGradient.fillColorBlends != null)
? createColorBlendForTheme(themeGradient.fillColorBlends)
: null,
(themeGradient.lineColorBlends != null)
? createColorBlendForTheme(themeGradient.lineColorBlends)
: null,
(themeGradient.textColorBlends != null)
? createColorBlendForTheme(themeGradient.textColorBlends)
: null)
{
NoDataValues = ConvertNoDataValues(themeGradient.noDataValues, themeGradient.noDataValueType)
};
gradTheme.ThemeItems.Clear();
foreach (themeItem gradThemeItem in themeGradient.gradientThemeItems)
{
var themeStyle = GetStyle(gradThemeItem);
var gradientThemeItem = new GradientThemeItem(themeStyle, gradThemeItem.label, gradThemeItem.intervalMaxValue.ToString());
gradTheme.ThemeItems.Add(gradientThemeItem);
}
return(gradTheme);
}
private static ThemeType GetThemeType(theme theme)
{
var type = theme.Item.GetType();
if (type.Equals(typeof(themeCustom)))
{
return(ThemeType.Custom);
}
if (type.Equals(typeof(themeCategory)))
{
return(ThemeType.Categorial);
}
if (type.Equals(typeof(themeGradient)))
{
return(ThemeType.Gradient);
}
if (type.Equals(typeof(themeQuantity)))
{
return(ThemeType.Quantity);
}
return(ThemeType.Custom);
}
private static QuantityTheme GetQuantityTheme(theme theme)
{
var themeQuantity = (themeQuantity)theme.Item;
var quanTheme = new QuantityTheme(themeQuantity.columnName, GetDefaultStyle(theme))
{
NoDataValues = ConvertNoDataValues(themeQuantity.noDataValues, themeQuantity.noDataValueType)
};
foreach (themeItem quanThemeItem in themeQuantity.quantityThemeItems)
{
var themeStyle = GetStyle(quanThemeItem);
var interval = new Interval(quanThemeItem.intervalMinValue,
quanThemeItem.intervalMaxValue);
var themeItem = new QuantityThemeItem(interval, themeStyle)
{
Label = quanThemeItem.label
};
quanTheme.ThemeItems.Add(themeItem);
}
return(quanTheme);
}
private static GradientTheme GetGradientTheme(theme theme)
{
var themeGradient = (themeGradient)theme.Item;
var minStyle = (IStyle)GetStyleConverter().ConvertFrom(themeGradient.minStyle);
var maxStyle = (IStyle)GetStyleConverter().ConvertFrom(themeGradient.maxStyle);
var gradTheme = new GradientTheme(themeGradient.columnName,
themeGradient.minValue,
themeGradient.maxValue,
minStyle,
maxStyle,
// Color blend properties
(themeGradient.fillColorBlends != null)
? createColorBlendForTheme(themeGradient.fillColorBlends)
: null,
(themeGradient.lineColorBlends != null)
? createColorBlendForTheme(themeGradient.lineColorBlends)
: null,
(themeGradient.textColorBlends != null)
? createColorBlendForTheme(themeGradient.textColorBlends)
: null)
{
NoDataValues = ConvertNoDataValues(themeGradient.noDataValues, themeGradient.noDataValueType)
};
gradTheme.ThemeItems.Clear();
foreach (themeItem gradThemeItem in themeGradient.gradientThemeItems)
{
var themeStyle = GetStyle(gradThemeItem);
var gradientThemeItem = new GradientThemeItem(themeStyle, gradThemeItem.label, gradThemeItem.intervalMaxValue.ToString());
gradTheme.ThemeItems.Add(gradientThemeItem);
}
return gradTheme;
}
private static CustomTheme GetCustomTheme(theme theme)
{
return new CustomTheme(null) { DefaultStyle = GetDefaultStyle(theme) };
}
private static ThemeType GetThemeType(theme theme)
{
var type = theme.Item.GetType();
if (type.Equals(typeof(themeCustom))) return ThemeType.Custom;
if (type.Equals(typeof(themeCategory))) return ThemeType.Categorial;
if (type.Equals(typeof(themeGradient))) return ThemeType.Gradient;
if (type.Equals(typeof(themeQuantity))) return ThemeType.Quantity;
return ThemeType.Custom;
}
private static IStyle GetDefaultStyle(theme theme)
{
string style = "";
switch (GetThemeType(theme))
{
case ThemeType.Custom:
style = ((themeCustom)theme.Item).defaultStyle;
break;
case ThemeType.Categorial:
style = ((themeCategory)theme.Item).defaultStyle;
break;
case ThemeType.Gradient:
break;
case ThemeType.Quantity:
style = ((themeQuantity)theme.Item).defaultStyle;
break;
default:
throw new ArgumentOutOfRangeException();
}
return (style != string.Empty) ? (IStyle)GetStyleConverter().ConvertFrom(style) : null;
}
/// <summary>
/// Converts from a a <see cref="SharpMap"/> <see cref="ITheme"/> object to a XML-like string
/// </summary>
/// <param name="context"></param>
/// <param name="culture"></param>
/// <param name="value"></param>
/// <param name="destinationType"></param>
/// <returns></returns>
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (!(value is ITheme) || !destinationType.Equals(typeof (string)))
{
// Use the base converter if the target type is unsupported
return base.ConvertTo(context, culture, value, destinationType);
}
// Get the ITheme to convert from
var to = new theme();
var from = (ITheme) value;
switch (GetThemeType(from))
{
case ThemeType.Custom:
to.Item = GetThemeCustom((CustomTheme)from);
break;
case ThemeType.Categorial:
to.Item = GetThemeCategorial((CategorialTheme)from);
break;
case ThemeType.Gradient:
to.Item = GetThemeGradient((GradientTheme)from);
break;
case ThemeType.Quantity:
to.Item = GetThemeQuantity((QuantityTheme) from);
break;
default:
throw new ArgumentOutOfRangeException();
}
// Return the theme classes as an xml data string
var sb = new StringBuilder();
var xml = new XmlSerializer(typeof (theme));
xml.Serialize(new StringWriter(sb), to);
return sb.ToString();
}
private static CategorialTheme GetCategorialTheme(theme theme)
{
var themeCategory = (themeCategory)theme.Item;
var defaultStyle = GetDefaultStyle(theme);
var categorialTheme = new CategorialTheme(themeCategory.columnName, defaultStyle);
foreach (themeItem catThemeItem in themeCategory.categoryThemeItems)
{
var categorialThemeItem = new CategorialThemeItem(catThemeItem.label, GetStyle(catThemeItem), null);
categorialTheme.AddThemeItem(categorialThemeItem);
}
return categorialTheme;
}
private static QuantityTheme GetQuantityTheme(theme theme)
{
var themeQuantity = (themeQuantity) theme.Item;
var quanTheme = new QuantityTheme(themeQuantity.columnName, GetDefaultStyle(theme))
{
NoDataValues = ConvertNoDataValues(themeQuantity.noDataValues, themeQuantity.noDataValueType)
};
foreach (themeItem quanThemeItem in themeQuantity.quantityThemeItems)
{
var themeStyle = GetStyle(quanThemeItem);
var interval = new Interval(quanThemeItem.intervalMinValue,
quanThemeItem.intervalMaxValue);
var themeItem = new QuantityThemeItem(interval, themeStyle) {Label = quanThemeItem.label};
quanTheme.ThemeItems.Add(themeItem);
}
return quanTheme;
}
