GRE::LABELPLACEMENT Class Reference

#include <gre/labelplacement.h>

List of all members.

Public Member Functions
ERRVALUE	Add (const LABELPLACE &place)
CONST_ITERATOR	Begin () const
void	Clear ()
void	DeleteLabels (const RVC::ELEMENT &element)
CONST_ITERATOR	End () const
INT32	Find (const REGION2D &region, MILIST< GRE::LABELPLACE * > &list) const
INT32	Find (const DRECT2D &rect, MILIST< GRE::LABELPLACE * > &list) const
INT32	Find (const DPOINT2D &pt, MILIST< GRE::LABELPLACE * > &list, int maxdist=0) const
INT32	Find (const DPOINT2D &pt, GRE::LABELPLACE &place, int maxdist=0) const
ERRVALUE	GetCombinedRegion (REGION2D &region, bool bClear=true) const
bool	GetLabelPlace (const RVC::ELEMENT &elem, GRE::LABELPLACE &place) const
bool	GetLabelPlaces (const RVC::ELEMENT &elem, MILIST< GRE::LABELPLACE > &places) const
GRE_LAYER *	GetLayer () const
int	GetNumItems () const
GRE_VIEW *	GetView () const
	LABELPLACEMENT (GRE_LAYER *layer, GRE_VIEW *view)
virtual	~LABELPLACEMENT ()
Static Public Member Functions
ERRVALUE	Deconflict (SIMPLE_ARRAY< LABELPLACEMENT * > &LabelSets)
Private Member Functions
virtual bool	v_CompareLabels (const RVC::ELEMENT &elem1, const RVC::ELEMENT &elem2) const

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Constructor & Destructor Documentation

GRE::LABELPLACEMENT::LABELPLACEMENT (  GRE_LAYER *  layer, GRE_VIEW *  view )

Default constructor.

virtual GRE::LABELPLACEMENT::~LABELPLACEMENT (   )  [virtual]

Destructor.

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Member Function Documentation

ERRVALUE GRE::LABELPLACEMENT::Add (  const LABELPLACE &  place  )

Add a place.

CONST_ITERATOR GRE::LABELPLACEMENT::Begin (   )  const [inline]

LABELPLACE Iterator constructor. Definition at line 646 of file labelplacement.h.

void GRE::LABELPLACEMENT::Clear (   )

Clear all places.

ERRVALUE GRE::LABELPLACEMENT::Deconflict (  SIMPLE_ARRAY< LABELPLACEMENT * > &  LabelSets  )  [static]

Shuffle labels around so they don't overlap (note: not actually implemented yet).

void GRE::LABELPLACEMENT::DeleteLabels (  const RVC::ELEMENT &  element  )

Deletes placement information for all labels attached to a given element. Note, if a label is associated with more than one element, only the leader line will be deleted.

CONST_ITERATOR GRE::LABELPLACEMENT::End (   )  const [inline]

LABELPLACE Iterator End condition. Definition at line 661 of file labelplacement.h.

INT32 GRE::LABELPLACEMENT::Find (  const REGION2D &  region, MILIST< GRE::LABELPLACE * > &  list )  const

Find all labels intersecting a rectangle in screen coordinates. List will be sorted front to back. pt is in screen coordinates. Returns: Number of items found or error if < 0

INT32 GRE::LABELPLACEMENT::Find (  const DRECT2D &  rect, MILIST< GRE::LABELPLACE * > &  list )  const

Find all labels intersecting a rectangle in screen coordinates. List will be sorted front to back. pt is in screen coordinates. Returns: Number of items found or error if < 0

INT32 GRE::LABELPLACEMENT::Find (  const DPOINT2D &  pt, MILIST< GRE::LABELPLACE * > &  list, int  maxdist = 0 )  const

Given a screen coordinate, find all labels at that location. List will be sorted front to back. pt is in screen coordinates. Returns: Number of items found or error if < 0

INT32 GRE::LABELPLACEMENT::Find (  const DPOINT2D &  pt, GRE::LABELPLACE &  place, int  maxdist = 0 )  const

Given a screen coordinate, find the label (topmost in case of multiples) at that location. pt is in screen coordinates. This version is for finding the label for data tips and things. The LABELPLACE returned is a copy, so changing it won't do anthing. Returns: Number of items found or error if < 0

ERRVALUE GRE::LABELPLACEMENT::GetCombinedRegion (  REGION2D &  region, bool  bClear = true )  const

Get the union of of all label place regions. This may be used for clip-under support, but then again, maybe not. If the actual labels will be drawn with balloon tips, this won't know about it. By default, the region passed in will be cleared of any previous value. If you pass false for the bClear parameter, it will combine the label regions with the region passed in. Parameters: bClear  Clear the region first

bool GRE::LABELPLACEMENT::GetLabelPlace (  const RVC::ELEMENT &  elem, GRE::LABELPLACE &  place )  const

Return the LABELPLACE for a given element. Will return true if the label is found, false if not.

bool GRE::LABELPLACEMENT::GetLabelPlaces (  const RVC::ELEMENT &  elem, MILIST< GRE::LABELPLACE > &  places )  const

Return the LABELPLACEs for all labels for given element. Will return true if the label is found, false if not.

GRE_LAYER* GRE::LABELPLACEMENT::GetLayer (   )  const

int GRE::LABELPLACEMENT::GetNumItems (   )  const

GRE_VIEW* GRE::LABELPLACEMENT::GetView (   )  const

virtual bool GRE::LABELPLACEMENT::v_CompareLabels (  const RVC::ELEMENT &  elem1, const RVC::ELEMENT &  elem2 )  const [private, virtual]

Compare the labels for two elements. Function should return true if the labels are the same, false if not. The optimizer may use this (based on an option flag) to determine if one label could be used for two elements. There is a default implementation which returns false, preventing lable combining.

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

• gre/labelplacement.h

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