Encapsulates geometry and associated attributes of a graphical 'pen stroke'. More...

#include <graphictools.hxx>

Collaboration diagram for SvtGraphicStroke:

Public Types
enum	CapType { capButt =0, capRound, capSquare }
	Style for open stroke ends. More...

enum	JoinType { joinMiter =0, joinRound, joinBevel, joinNone }
	Style for joins of individual stroke segments. More...

typedef ::std::vector< double >	DashArray

Public Member Functions
	SvtGraphicStroke ()

	SvtGraphicStroke (const tools::Polygon &rPath, const tools::PolyPolygon &rStartArrow, const tools::PolyPolygon &rEndArrow, double fTransparency, double fStrokeWidth, CapType aCap, JoinType aJoin, double fMiterLimit, const DashArray &rDashArray)
	All in one constructor. More...

void	getPath (tools::Polygon &) const
	Query path to stroke. More...

void	getStartArrow (tools::PolyPolygon &) const
	Get the polygon that is put at the start of the line. More...

void	getEndArrow (tools::PolyPolygon &) const
	Get the polygon that is put at the end of the line. More...

double	getTransparency () const
	Get stroke transparency. More...

double	getStrokeWidth () const
	Get width of the stroke. More...

CapType	getCapType () const
	Get the style in which open stroke ends are drawn. More...

JoinType	getJoinType () const
	Get the style in which the stroke segments are joined. More...

double	getMiterLimit () const
	Get the maximum length of mitered joins. More...

void	getDashArray (DashArray &) const
	Get an array of "on" and "off" lengths for stroke dashing. More...

void	setPath (const tools::Polygon &)
	Set path to stroke. More...

void	setStartArrow (const tools::PolyPolygon &)
	Set the polygon that is put at the start of the line. More...

void	setEndArrow (const tools::PolyPolygon &)
	Set the polygon that is put at the end of the line. More...

void	scale (double fScaleX, double fScaleY)
	Affine scaling in both X and Y dimensions. More...

Private Attributes
tools::Polygon	maPath

tools::PolyPolygon	maStartArrow

tools::PolyPolygon	maEndArrow

double	mfTransparency

double	mfStrokeWidth

CapType	maCapType

JoinType	maJoinType

double	mfMiterLimit

DashArray	maDashArray

Friends
VCL_DLLPUBLIC friend SvStream &	WriteSvtGraphicStroke (SvStream &rOStm, const SvtGraphicStroke &rClass)

VCL_DLLPUBLIC friend SvStream &	ReadSvtGraphicStroke (SvStream &rIStm, SvtGraphicStroke &rClass)

Detailed Description

Encapsulates geometry and associated attributes of a graphical 'pen stroke'.

Attention:: Widespread use is deprecated. See declarations above for the way to go. Especially the copied enums from svx/xenum.hxx are troublesome.

Use this class to store geometry and attributes of a graphical 'pen stroke', such as pen width, dashing etc. The geometry is the so-called 'path' along which the stroke is traced, with the given pen width. The cap type determines how the open ends of the path should be drawn. If the geometry consists of more than one segment, the join type determines in which way the segments are joined.

Definition at line 47 of file graphictools.hxx.

Member Typedef Documentation

typedef ::std::vector< double > SvtGraphicStroke::DashArray

Definition at line 72 of file graphictools.hxx.

Member Enumeration Documentation

enum SvtGraphicStroke::CapType

Style for open stroke ends.

Enumerator
capButt	No additional cap.
capRound	Half-round cap at the line end, the center lying at the end point.
capSquare	Half-square cap at the line end, the center lying at the end point.

Definition at line 51 of file graphictools.hxx.

enum SvtGraphicStroke::JoinType

Style for joins of individual stroke segments.

Enumerator
joinMiter	Extend segment edges, until they cross.
joinRound	Connect segments by a filled round arc.
joinBevel	Connect segments by a direct straight line.
joinNone	Perform no join, leads to visible gaps between thick line segments.

Definition at line 61 of file graphictools.hxx.

Constructor & Destructor Documentation

SvtGraphicStroke::SvtGraphicStroke ( )

Definition at line 32 of file graphictools.cxx.

SvtGraphicStroke::SvtGraphicStroke	(	const tools::Polygon &	rPath,
		const tools::PolyPolygon &	rStartArrow,
		const tools::PolyPolygon &	rEndArrow,
		double	fTransparency,
		double	fStrokeWidth,
		CapType	aCap,
		JoinType	aJoin,
		double	fMiterLimit,
		const DashArray &	rDashArray
	)

All in one constructor.

See accessor method descriptions for argument description

Definition at line 45 of file graphictools.cxx.

Member Function Documentation

CapType SvtGraphicStroke::getCapType ( ) const

inline

Get the style in which open stroke ends are drawn.

Definition at line 128 of file graphictools.hxx.

Referenced by vcl::PDFWriterImpl::playMetafile().

void SvtGraphicStroke::getDashArray ( DashArray & rDashArray ) const

Get an array of "on" and "off" lengths for stroke dashing.

Definition at line 82 of file graphictools.cxx.

References maDashArray.

Referenced by vcl::PDFWriterImpl::playMetafile().

void SvtGraphicStroke::getEndArrow ( tools::PolyPolygon & rPath ) const

Get the polygon that is put at the end of the line.

The polygon is in a special normalized position, and already scaled to the desired size: the center of the stroked path will meet the given polygon at (0,0) from negative y values. Thus, an arrow would have its baseline on the x axis, going upwards to positive y values. Furthermore, the polygon is also scaled in a special way: the width of the joining stroke is defined to be SvtGraphicStroke::normalizedArrowWidth (0x10000), i.e. ranging from x=-0x8000 to x=0x8000. So, if the arrow does have this width, it has to fit every stroke with every stroke width exactly.

Definition at line 76 of file graphictools.cxx.

References maEndArrow.

Referenced by MetaCommentAction::Move(), and vcl::PDFWriterImpl::playMetafile().

JoinType SvtGraphicStroke::getJoinType ( ) const

inline

Get the style in which the stroke segments are joined.

Definition at line 130 of file graphictools.hxx.

Referenced by vcl::PDFWriterImpl::playMetafile().

double SvtGraphicStroke::getMiterLimit ( ) const

inline

Get the maximum length of mitered joins.

Definition at line 132 of file graphictools.hxx.

Referenced by vcl::PDFWriterImpl::playMetafile().

void SvtGraphicStroke::getPath ( tools::Polygon & rPath ) const

Query path to stroke.

Definition at line 66 of file graphictools.cxx.

References maPath.

Referenced by clipMetafileContentAgainstOwnRegions(), MetaCommentAction::Move(), vcl::PDFWriterImpl::playMetafile(), and GDIMetaFile::Rotate().

void SvtGraphicStroke::getStartArrow ( tools::PolyPolygon & rPath ) const

Get the polygon that is put at the start of the line.

The polygon is in a special normalized position: the center of the stroked path will meet the given polygon at (0,0) from negative y values. Thus, an arrow would have its baseline on the x axis, going upwards to positive y values. Furthermore, the polygon is also scaled in a special way: the width of the joining stroke is defined to be SvtGraphicStroke::normalizedArrowWidth (0x10000), i.e. ranging from x=-0x8000 to x=0x8000. So, if the arrow does have this width, it has to fit every stroke with every stroke width exactly.

Definition at line 71 of file graphictools.cxx.

References maStartArrow.

Referenced by MetaCommentAction::Move(), and vcl::PDFWriterImpl::playMetafile().

double SvtGraphicStroke::getStrokeWidth ( ) const

inline

Get width of the stroke.

Definition at line 126 of file graphictools.hxx.

Referenced by vcl::PDFWriterImpl::playMetafile().

double SvtGraphicStroke::getTransparency ( ) const

inline

Get stroke transparency.

Returns: the transparency, ranging from 0.0 (opaque) to 1.0 (fully translucent)

Definition at line 124 of file graphictools.hxx.

Referenced by vcl::PDFWriterImpl::playMetafile().

void SvtGraphicStroke::scale	(	double	fScaleX,
		double	fScaleY
	)

Affine scaling in both X and Y dimensions.

Definition at line 102 of file graphictools.cxx.

References maEndArrow, maPath, maStartArrow, mfMiterLimit, mfStrokeWidth, tools::Polygon::Scale(), and tools::PolyPolygon::Scale().

Referenced by MetaCommentAction::Scale().

void SvtGraphicStroke::setEndArrow ( const tools::PolyPolygon & rPoly )

Set the polygon that is put at the end of the line.

The polygon has to be in a special normalized position, and already scaled to the desired size: the center of the stroked path will meet the given polygon at (0,0) from negative y values. Thus, an arrow would have its baseline on the x axis, going upwards to positive y values. Furthermore, the polygon also has to be scaled appropriately: the width of the joining stroke is defined to be SvtGraphicStroke::normalizedArrowWidth (0x10000), i.e. ranging from x=-0x8000 to x=0x8000. If your arrow does have this width, it will fit every stroke with every stroke width exactly.

Definition at line 97 of file graphictools.cxx.

References maEndArrow.

Referenced by MetaCommentAction::Move().

void SvtGraphicStroke::setPath ( const tools::Polygon & rPoly )

Set path to stroke.

Definition at line 87 of file graphictools.cxx.

References maPath.

Referenced by clipMetafileContentAgainstOwnRegions(), MetaCommentAction::Move(), and GDIMetaFile::Rotate().

void SvtGraphicStroke::setStartArrow ( const tools::PolyPolygon & rPoly )

Set the polygon that is put at the start of the line.

The polygon has to be in a special normalized position, and already scaled to the desired size: the center of the stroked path will meet the given polygon at (0,0) from negative y values. Thus, an arrow would have its baseline on the x axis, going upwards to positive y values. Furthermore, the polygon also has to be scaled appropriately: the width of the joining stroke is defined to be SvtGraphicStroke::normalizedArrowWidth (0x10000), i.e. ranging from x=-0x8000 to x=0x8000. If your arrow does have this width, it will fit every stroke with every stroke width exactly.

Definition at line 92 of file graphictools.cxx.

References maStartArrow.

Referenced by MetaCommentAction::Move().