Class StrategyBasedLinearGradientBuilder

Namespace

iText.Kernel.Colors.Gradients

Assembly

itext.kernel.dll

The linear gradient builder with automatic coordinates vector evaluation for the target filled area based on configured strategy

public class StrategyBasedLinearGradientBuilder : AbstractLinearGradientBuilder

Inheritance

object

AbstractLinearGradientBuilder

StrategyBasedLinearGradientBuilder

Inherited Members

AbstractLinearGradientBuilder.ZERO_EPSILON

AbstractLinearGradientBuilder.AddColorStop(GradientColorStop)

AbstractLinearGradientBuilder.SetSpreadMethod(GradientSpreadMethod)

AbstractLinearGradientBuilder.GetColorStops()

AbstractLinearGradientBuilder.GetSpreadMethod()

AbstractLinearGradientBuilder.BuildColor(Rectangle, AffineTransform, PdfDocument)

AbstractLinearGradientBuilder.GetCurrentSpaceToGradientVectorSpaceTransformation(Rectangle, AffineTransform)

AbstractLinearGradientBuilder.EvaluateCoveringDomain(Point[], Rectangle)

AbstractLinearGradientBuilder.CreateCoordinatesForNewDomain(double[], Point[])

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Constructors

StrategyBasedLinearGradientBuilder()

Create a new instance of the builder

public StrategyBasedLinearGradientBuilder()

Methods

GetGradientStrategy()

Get the last set predefined strategy

public virtual StrategyBasedLinearGradientBuilder.GradientStrategy GetGradientStrategy()

Returns

StrategyBasedLinearGradientBuilder.GradientStrategy

the last set predefined strategy

GetGradientVector(Rectangle, AffineTransform)

protected override Point[] GetGradientVector(Rectangle targetBoundingBox, AffineTransform contextTransform)

Parameters

targetBoundingBox Rectangle

contextTransform AffineTransform

Returns

Point[]

GetRotateVectorAngle()

Get the last set rotate vector angle

public virtual double GetRotateVectorAngle()

Returns

double

the last set rotate vector angle

IsCentralRotationAngleStrategy()

Is the central rotation angle strategy was set last

public virtual bool IsCentralRotationAngleStrategy()

Returns

bool

true if the last strategy that has been set is a custom rotation angle

SetGradientDirectionAsCentralRotationAngle(double)

Set the strategy to use the minimal coordinates vector that passes through the central point of the target rectangle area, rotated by the specified amount of radians counter clockwise and covers the area to be filled.

public virtual StrategyBasedLinearGradientBuilder SetGradientDirectionAsCentralRotationAngle(double radians)

Parameters

radians double

the radians value to rotate the coordinates vector

Returns

StrategyBasedLinearGradientBuilder

the current builder instance

Remarks

Set the strategy to use the minimal coordinates vector that passes through the central point of the target rectangle area, rotated by the specified amount of radians counter clockwise and covers the area to be filled. Zero angle corresponds to the vector from bottom to top.

SetGradientDirectionAsStrategy(GradientStrategy)

Set the strategy to predefined one

public virtual StrategyBasedLinearGradientBuilder SetGradientDirectionAsStrategy(StrategyBasedLinearGradientBuilder.GradientStrategy gradientStrategy)

Parameters

gradientStrategy StrategyBasedLinearGradientBuilder.GradientStrategy

the strategy to set

Returns

StrategyBasedLinearGradientBuilder

the current builder instance