The linear gradient builder implementation with direct target gradient vector and shading transformation ( more info ) More...

Inheritance diagram for iText.Kernel.Colors.Gradients.LinearGradientBuilder:

Public Member Functions
	LinearGradientBuilder ()
	Constructs the builder instance More...

virtual iText.Kernel.Colors.Gradients.LinearGradientBuilder	SetGradientVector (double x0, double y0, double x1, double y1)
	Set coordinates for gradient vector ( more info ) More...

virtual iText.Kernel.Colors.Gradients.LinearGradientBuilder	SetCurrentSpaceToGradientVectorSpaceTransformation (AffineTransform transformation)
	Set the linear gradient space transformation which specifies the transformation from the current coordinates space to gradient vector space More...

Public Member Functions inherited from iText.Kernel.Colors.Gradients.AbstractLinearGradientBuilder
virtual AbstractLinearGradientBuilder	AddColorStop (GradientColorStop gradientColorStop)
	Adds the new color stop to the end ( more info ). More...

virtual AbstractLinearGradientBuilder	SetSpreadMethod (GradientSpreadMethod gradientSpreadMethod)
	Set the spread method to use for the gradient More...

virtual IList< GradientColorStop >	GetColorStops ()
	Get the copy of current color stops list. More...

virtual GradientSpreadMethod	GetSpreadMethod ()
	Get the current spread method More...

virtual Color	BuildColor (Rectangle targetBoundingBox, AffineTransform contextTransform, PdfDocument document)
	Builds the iText.Kernel.Colors.Color object representing the linear gradient with specified configuration that fills the target bounding box. More...

Package Functions
override Point[]	GetGradientVector (Rectangle targetBoundingBox, AffineTransform contextTransform)
	Returns the base gradient vector in gradient vector space. More...

override AffineTransform	GetCurrentSpaceToGradientVectorSpaceTransformation (Rectangle targetBoundingBox, AffineTransform contextTransform)
	Returns the current space to gradient vector space transformations that should be applied to the shading color. More...

Additional Inherited Members
Static Package Functions inherited from iText.Kernel.Colors.Gradients.AbstractLinearGradientBuilder
static double[]	EvaluateCoveringDomain (Point[] coords, Rectangle toCover)
	Evaluates the minimal domain that covers the box with vector normals. More...

static Point[]	CreateCoordinatesForNewDomain (double[] newDomain, Point[] baseVector)
	Expand the base vector to cover the new domain More...

Static Package Attributes inherited from iText.Kernel.Colors.Gradients.AbstractLinearGradientBuilder
const double	ZERO_EPSILON = 1E-10
	The epsilon value used for data creation More...

Detailed Description

The linear gradient builder implementation with direct target gradient vector and shading transformation ( more info )

Constructor & Destructor Documentation

◆ LinearGradientBuilder()

iText.Kernel.Colors.Gradients.LinearGradientBuilder.LinearGradientBuilder ( )

inline

Constructs the builder instance

Member Function Documentation

◆ GetCurrentSpaceToGradientVectorSpaceTransformation()

override AffineTransform iText.Kernel.Colors.Gradients.LinearGradientBuilder.GetCurrentSpaceToGradientVectorSpaceTransformation	(	Rectangle	targetBoundingBox,
		AffineTransform	contextTransform
	)

inlinepackagevirtual

Returns the current space to gradient vector space transformations that should be applied to the shading color.

Returns the current space to gradient vector space transformations that should be applied to the shading color. The transformation should be invertible as the current target bounding box coordinates should be transformed into the resulted shading space coordinates.

Parameters

targetBoundingBox	the rectangle to be covered by constructed color in current space
contextTransform	the current canvas transformation

Returns: the additional transformation to be concatenated to the current for resulted shading or null if no additional transformation is specified

Reimplemented from iText.Kernel.Colors.Gradients.AbstractLinearGradientBuilder.

◆ GetGradientVector()

override Point [] iText.Kernel.Colors.Gradients.LinearGradientBuilder.GetGradientVector	(	Rectangle	targetBoundingBox,
		AffineTransform	contextTransform
	)

inlinepackagevirtual

Returns the base gradient vector in gradient vector space.

Returns the base gradient vector in gradient vector space. This vector would be set as shading coordinates vector and its length would be used to translate all color stops absolute offsets into the relatives.

Parameters

targetBoundingBox	the rectangle to be covered by constructed color in current space
contextTransform	the current canvas transformation

Returns: the array of exactly two elements specifying the gradient coordinates vector

Implements iText.Kernel.Colors.Gradients.AbstractLinearGradientBuilder.

◆ SetCurrentSpaceToGradientVectorSpaceTransformation()

virtual iText.Kernel.Colors.Gradients.LinearGradientBuilder iText.Kernel.Colors.Gradients.LinearGradientBuilder.SetCurrentSpaceToGradientVectorSpaceTransformation ( AffineTransform transformation )

inlinevirtual

Set the linear gradient space transformation which specifies the transformation from the current coordinates space to gradient vector space

The current space is the one on which linear gradient will be drawn (as a fill or stroke color for shapes on PDF canvas). This transformation mainly used for color lines skewing.

Parameters

transformation the iText.Kernel.Geom.AffineTransform representing the transformation to set

Returns: the current builder instance

◆ SetGradientVector()

virtual iText.Kernel.Colors.Gradients.LinearGradientBuilder iText.Kernel.Colors.Gradients.LinearGradientBuilder.SetGradientVector	(	double	x0,
		double	y0,
		double	x1,
		double	y1
	)

inlinevirtual

Set coordinates for gradient vector ( more info )

Parameters

x0	the x coordinate of the vector start
y0	the y coordinate of the vector start
x1	the x coordinate of the vector end
y1	the y coordinate of the vector end

Returns: the current builder instance

Public Member Functions

Package Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ LinearGradientBuilder()

Member Function Documentation

◆ GetCurrentSpaceToGradientVectorSpaceTransformation()

◆ GetGradientVector()

◆ SetCurrentSpaceToGradientVectorSpaceTransformation()

◆ SetGradientVector()