/// <summary>
/// Set the color hint specified by its value and type (
/// <see cref="GradientColorStop">more details</see>
/// ).
/// </summary>
/// <param name="hintOffset">
/// the hint offset's value to be set. Makes sense only
/// if the
/// <paramref name="hintOffsetType"/>
/// is not
/// <see cref="HintOffsetType.NONE"/>
/// </param>
/// <param name="hintOffsetType">the hint offset's type to be set</param>
/// <returns>
/// the current
/// <see cref="GradientColorStop"/>
/// instance
/// </returns>
public virtual iText.Kernel.Colors.Gradients.GradientColorStop SetHint(double hintOffset, GradientColorStop.HintOffsetType
hintOffsetType)
{
this.hintOffsetType = hintOffsetType != null ? hintOffsetType : GradientColorStop.HintOffsetType.NONE;
this.hintOffset = this.hintOffsetType != GradientColorStop.HintOffsetType.NONE ? hintOffset : 0d;
return(this);
}
private static IList <GradientColorStop> CopyStopsAndNormalizeAbsoluteOffsets(IList <GradientColorStop> toNormalize
, double baseVectorLength)
{
double lastUsedOffset = double.NegativeInfinity;
IList <GradientColorStop> copy = new List <GradientColorStop>(toNormalize.Count);
foreach (GradientColorStop stop in toNormalize)
{
double offset = stop.GetOffset();
GradientColorStop.OffsetType offsetType = stop.GetOffsetType();
if (offsetType == GradientColorStop.OffsetType.ABSOLUTE)
{
offsetType = GradientColorStop.OffsetType.RELATIVE;
offset /= baseVectorLength;
}
if (offsetType == GradientColorStop.OffsetType.RELATIVE)
{
if (offset < lastUsedOffset)
{
offset = lastUsedOffset;
}
lastUsedOffset = offset;
}
GradientColorStop result = new GradientColorStop(stop, offset, offsetType);
double hintOffset = stop.GetHintOffset();
GradientColorStop.HintOffsetType hintOffsetType = stop.GetHintOffsetType();
if (hintOffsetType == GradientColorStop.HintOffsetType.ABSOLUTE_ON_GRADIENT)
{
hintOffsetType = GradientColorStop.HintOffsetType.RELATIVE_ON_GRADIENT;
hintOffset /= baseVectorLength;
}
if (hintOffsetType == GradientColorStop.HintOffsetType.RELATIVE_ON_GRADIENT)
{
if (hintOffset < lastUsedOffset)
{
hintOffset = lastUsedOffset;
}
lastUsedOffset = hintOffset;
}
result.SetHint(hintOffset, hintOffsetType);
copy.Add(result);
}
return(copy);
}
