DesignTimePropertyAttributes GetDesignTimePropertyAttributes(PropertyInfo propertyInfo)
{
DesignTimePropertyAttributes result = new DesignTimePropertyAttributes();
PrecisionAttribute numDigitsAttribute = propertyInfo.GetCustomAttribute <PrecisionAttribute>();
if (numDigitsAttribute != null)
{
result.NumDigits = numDigitsAttribute.NumDecimalPlaces;
}
DisplayTextAttribute displayTextAttribute = propertyInfo.GetCustomAttribute <DisplayTextAttribute>();
if (displayTextAttribute != null)
{
result.DisplayText = displayTextAttribute.DisplayText;
}
DependentPropertyAttribute dependentPropertyAttribute = propertyInfo.GetCustomAttribute <DependentPropertyAttribute>();
if (dependentPropertyAttribute != null)
{
result.DependentProperty = dependentPropertyAttribute.DependentProperty;
}
return(result);
}
/// <summary>
/// 验证精度（小数点数）
/// </summary>
/// <param name="box">验证框</param>
/// <param name="min">最小精度</param>
/// <param name="max">最大精度</param>
/// <param name="errorMessage">提示信息</param>
/// <returns></returns>
public static ValidBox Precision(this ValidBox box, int min, int max, string errorMessage)
{
var newBox = new PrecisionAttribute(min, max)
{
ErrorMessage = errorMessage
}.ToValidBox();
return(ValidBox.Merge(box, newBox));
}
public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes)
{
var baseProperties = base.GetProperties(context, value, attributes);
var precisionAttribute = new PrecisionAttribute(0, 1);
var editorAttribute = new EditorAttribute(DesignTypes.SliderEditor, DesignTypes.UITypeEditor);
var hueAttributes = new Attribute[] { new RangeAttribute(0, 179), precisionAttribute, editorAttribute };
var satValAttributes = new Attribute[] { new RangeAttribute(0, 255), precisionAttribute, editorAttribute };
var properties = new PropertyDescriptor[3];
properties[0] = new PropertyDescriptorWrapper("H", baseProperties["Val0"], hueAttributes);
properties[1] = new PropertyDescriptorWrapper("S", baseProperties["Val1"], satValAttributes);
properties[2] = new PropertyDescriptorWrapper("V", baseProperties["Val2"], satValAttributes);
return(new PropertyDescriptorCollection(properties));
}
/// <summary>
/// 验证精度（小数点数）
/// </summary>
/// <param name="box">验证框</param>
/// <param name="min">最小精度</param>
/// <param name="max">最大精度</param>
/// <returns></returns>
public static ValidBox Precision(this ValidBox box, int min, int max)
{
var newBox = new PrecisionAttribute(min, max).ToValidBox();
return(ValidBox.Merge(box, newBox));
}
