DtVertexDrawer Class Reference

Qt includes. More...

Inheritance diagram for DtVertexDrawer:

Public Types
enum	DtKnobStyle { DtSquare, DtCircle }

Public Member Functions
	DtVertexDrawer ()
virtual	~DtVertexDrawer ()
virtual bool	draw (QPainter &paint, const DtSymbol *const symbol) const
	draws the specified symbol on a device.
virtual bool	draw (QPainter &paint, const DtSymbol *const symbol, bool preTransparent) const
	If preTransparent is true, draw knobs in black if symbol is going to be a transparent draw so this drawer can fill in after.
virtual QSize	calcBBox (const DtSymbol *const symbol) const
	Calculate the drawn size of this symbol.
virtual void	setKnobStyle (DtKnobStyle style)
virtual DtKnobStyle	knobStyle () const
Public Member Functions inherited from DtSymbolDrawer
	DtSymbolDrawer ()
virtual	~DtSymbolDrawer ()
virtual bool	doDrawing (QPainter &paint, const DtSymbol *const symbol)
	Initializes any drawing information and then calls internal draw() method.
virtual QRect	calcBRect (const DtSymbol *const symbol) const
virtual bool	forceUpdate (const DtSymbol *const symbol) const
	Override if your class wants to force a redraw of this item regardless of performance enhancement state.
virtual void	processHiddenSymbolAction (QPainter &paint, const DtSymbol *const symbol)
	Routine to perform even when symbol is hidden.

Protected Member Functions
virtual void	drawKnob (QPainter &paint, const QPoint &pnt, int iKnobSize) const
	Switches on myKnobStyle to draw knob of particular kind.
virtual void	drawSquareKnob (QPainter &paint, const QPoint &pnt, int iKnobSize) const
virtual void	drawCircleKnob (QPainter &paint, const QPoint &pnt, int iKnobSize) const
virtual bool	endTransparentDraw (QPainter &paint, const DtSymbol *const symbol) const
	Called after transparent draw is finished if symbol wants to draw transparently.
Protected Member Functions inherited from DtSymbolDrawer
	DtSymbolDrawer (const DtSymbolDrawer &orig)
	Protected so not used. Conceptually class is a singleton.
DtSymbolDrawer &	operator= (const DtSymbolDrawer &orig)
	Protected so not used. Conceptually class is a singleton.

Protected Attributes
DtKnobStyle	myKnobStyle

Private Member Functions
	DtVertexDrawer (const DtVertexDrawer &orig)
DtVertexDrawer &	operator= (const DtVertexDrawer &orig)

Additional Inherited Members
Static Public Member Functions inherited from DtSymbolDrawer
static double	drawScalingFactor ()
	Because of potential size difference in printer and screen metrics, a scaling factor can be applied to any drawing that relies on screen coordinates (such as arrow or bitmap size).
static void	setDrawScalingFactor (double d)
static void	setHighlightColor (const QColor &color)
static const QColor &	highlightColor ()
Static Protected Attributes inherited from DtSymbolDrawer
static double	gDrawScalingFactor
static QColor	theHighlightColor

Detailed Description

Qt includes.

This class will draw "knobs" at the verticies of the line symbol attached to this drawer. The knob size is part of the DtLineSymbol and the drawing will be centered around the point

Member Enumeration Documentation

enum DtVertexDrawer::DtKnobStyle

Enumerator:

DtSquare
DtCircle

Constructor & Destructor Documentation

DtVertexDrawer::DtVertexDrawer

(

)

virtual DtVertexDrawer::~DtVertexDrawer ( )

virtual

DtVertexDrawer::DtVertexDrawer ( const DtVertexDrawer &  orig )

private

Member Function Documentation

virtual bool DtVertexDrawer::draw ( QPainter &  paint, const DtSymbol *const  symbol  ) const

virtual

draws the specified symbol on a device.

The symbol must be of a DtLineSymbol type or nothing will be drawn.

Returns

true if successful, false otherwise.

Implements DtSymbolDrawer.

virtual bool DtVertexDrawer::draw ( QPainter &  paint, const DtSymbol *const  symbol, bool  preTransparent  ) const

virtual

If preTransparent is true, draw knobs in black if symbol is going to be a transparent draw so this drawer can fill in after.

virtual QSize DtVertexDrawer::calcBBox ( const DtSymbol *const  symbol ) const

virtual

Calculate the drawn size of this symbol.

The symbol must be of a type this drawer can recognize.

Implements DtSymbolDrawer.

virtual void DtVertexDrawer::setKnobStyle ( DtKnobStyle  style )

virtual

virtual DtKnobStyle DtVertexDrawer::knobStyle ( ) const

virtual

virtual void DtVertexDrawer::drawKnob ( QPainter &  paint, const QPoint &  pnt, int  iKnobSize  ) const

protectedvirtual

Switches on myKnobStyle to draw knob of particular kind.

virtual void DtVertexDrawer::drawSquareKnob ( QPainter &  paint, const QPoint &  pnt, int  iKnobSize  ) const

protectedvirtual

virtual void DtVertexDrawer::drawCircleKnob ( QPainter &  paint, const QPoint &  pnt, int  iKnobSize  ) const

protectedvirtual

virtual bool DtVertexDrawer::endTransparentDraw ( QPainter &  paint, const DtSymbol *const  symbol  ) const

protectedvirtual

Called after transparent draw is finished if symbol wants to draw transparently.

Reimplemented from DtSymbolDrawer.

DtVertexDrawer& DtVertexDrawer::operator= ( const DtVertexDrawer &  orig )

private

Member Data Documentation

DtKnobStyle DtVertexDrawer::myKnobStyle

protected

---

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

• include/symbolDrawer/vertexDrawer.h