/// <summary>Set the offset specified by its value and type</summary>
/// <param name="offset">
/// the offset's value to be set. Makes sense only if the
/// <paramref name="offsetType"/>
/// is not
/// <see cref="OffsetType.AUTO"/>
/// </param>
/// <param name="offsetType">the offset's type to be set</param>
/// <returns>
/// the current
/// <see cref="GradientColorStop"/>
/// instance
/// </returns>
public virtual iText.Kernel.Colors.Gradients.GradientColorStop SetOffset(double offset, GradientColorStop.OffsetType
offsetType)
{
this.offsetType = offsetType != null ? offsetType : GradientColorStop.OffsetType.AUTO;
this.offset = this.offsetType != GradientColorStop.OffsetType.AUTO ? offset : 0d;
return(this);
}
private GradientColorStop(float[] rgb, float opacity, double offset, GradientColorStop.OffsetType offsetType
)
{
this.rgb = CopyRgbArray(rgb);
this.opacity = Normalize(opacity);
SetOffset(offset, offsetType);
}
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);
}
/// <summary>Constructor that creates the stop with the same color as the another stop and new offset</summary>
/// <param name="gradientColorStop">the gradient stop color from which the color value would be copied</param>
/// <param name="offset">
/// the new offset. Makes sense only if the
/// <paramref name="offsetType"/>
/// is not
/// <see cref="OffsetType.AUTO"/>
/// </param>
/// <param name="offsetType">the new offset's type</param>
public GradientColorStop(iText.Kernel.Colors.Gradients.GradientColorStop gradientColorStop, double offset,
GradientColorStop.OffsetType offsetType)
: this(gradientColorStop.GetRgbArray(), gradientColorStop.GetOpacity(), offset, offsetType)
{
}
/// <summary>Constructor of stop color with with specified rgb color and offset</summary>
/// <param name="rgb">the color value</param>
/// <param name="offset">
/// the offset value. Makes sense only if the
/// <paramref name="offsetType"/>
/// is not
/// <see cref="OffsetType.AUTO"/>
/// </param>
/// <param name="offsetType">the offset's type</param>
public GradientColorStop(float[] rgb, double offset, GradientColorStop.OffsetType offsetType)
: this(rgb, 1f, offset, offsetType)
{
}
