Class for tracking the graphics state leading to the point where a transform is applied. More...

#include <transforms.h>

Public Member Functions
	CTransformState (const IDOMNodePtr &node)
	Initialise to the state that would be active inside the given node. An atttempt will be made to determine the complete state by contatenating the state of all the parents of the given node. The best results will occur when the node's parents lead to an IDOMFixedPage.

CTransformState	stateInsideNode (const IDOMNodePtr &node, bool updateTransform=true, bool updateClip=true, bool updateRenderingIntent=true, bool updateEdgeMode=true) const
	Return a new state consisting of this state concatenated with the state implied by the given node.

CTransformState	stateInsideBrush (const IDOMBrushPtr &brush, eBrushUsage brushUsage) const
	Return a new state consisting of this state concatenated with the state implied by the given brush.

Public Attributes
FMatrix	transform
	The current transformation from default coordinates.

bool	hasClipBounds
	True if clipBounds is valid.

FRect	clipBounds
	The bounds of the current clipping area.

IDOMColorSpacePtr	groupColorSpace
	The current group color space.

bool	hasRenderingIntent
	True if an explicit rendering intent has been applied.

eRenderingIntent	renderingIntent
	Ignored if hasRenderingIntent is false.

eBlackPointCompensation	blackPointCompensation
	The current black point compensation.

eEdgeMode	edgeMode
	The current edge mode.

eBrushUsage	brushUsage
	Set when we descend into a brush.

bool	inUncoloredTilingBrush

void *	transformPriv

Detailed Description

Class for tracking the graphics state leading to the point where a transform is applied.

Consider for example the IImageDownsamplerTransform described later in this header. In order to determine how to downsample an image, the transform needs to know how large the image will eventually be. The CTransformState provides this information by providing the combined transform that applies to the image based on the RenderTransforms of all the nodes entered leading to the point where the image is actually encountered.

Other transforms need access to other information, such as the approximate clip area, the current group color space, the renderingIntent (if present), the current antialiasing mode (edge mode) and/or how a brush is used.

Member Function Documentation

◆ stateInsideBrush()

CTransformState JawsMako::CTransformState::stateInsideBrush	(	const IDOMBrushPtr &	brush,
		eBrushUsage	brushUsage ) const

Return a new state consisting of this state concatenated with the state implied by the given brush.

Parameters

brush	The brush whose state we wish to apply.
brushUsage	The way the brush would be used; ie for filling, stroking, or for use as an opacity mask.

Returns: The new state.

◆ stateInsideNode()

CTransformState JawsMako::CTransformState::stateInsideNode	(	const IDOMNodePtr &	node,
		bool	updateTransform = true,
		bool	updateClip = true,
		bool	updateRenderingIntent = true,
		bool	updateEdgeMode = true ) const

Return a new state consisting of this state concatenated with the state implied by the given node.

Parameters

node	The node whose state we wish to apply.
updateTransform	If true, update the transform entry, and also the related black point compensation entry.
updateClip	If true, update the clipBounds entry
updateRenderingIntent	If true, update the rendering intent.

Returns: The new state.

Member Data Documentation

◆ inUncoloredTilingBrush

bool JawsMako::CTransformState::inUncoloredTilingBrush

Set to true when we descend into an uncolored tiling brush (An IDOMTilingPatternBrush with PaintType == 2)

◆ transformPriv

void* JawsMako::CTransformState::transformPriv

Private contextual information for use by the transform implementation

The documentation for this class was generated from the following file:

transforms.h

Public Member Functions