DtCompositeDrawer Class Reference

Qt includes. More...

Inheritance diagram for DtCompositeDrawer:

Public Member Functions
	DtCompositeDrawer ()
virtual	~DtCompositeDrawer ()
virtual bool	draw (QPainter &paint, const DtSymbol *const symbol) const
	draws the specified symbol on a device.
virtual QSize	calcBBox (const DtSymbol *const symbol) const
	Calculate the drawn size of this symbol.
virtual void	addDrawer (DtSymbolDrawer *drawer)
virtual void	removeDrawer (DtSymbolDrawer *drawer)
virtual DtPtrQList < DtSymbolDrawer * > *	drawers ()
void	destroyDrawer (DtSymbolDrawer *, bool add=true)
	Call this routine to add a composite drawer to destroy that is part of this drawer when this drawer is destroyed.
Public Member Functions inherited from DtBaseSymbolDrawer
	DtBaseSymbolDrawer ()
virtual	~DtBaseSymbolDrawer ()
virtual bool	doDrawing (QPainter &paint, const DtSymbol *const symbol)
	! Initializes any drawing information and then calls internal draw() method
Public Member Functions inherited from DtSymbolDrawer
	DtSymbolDrawer ()
virtual	~DtSymbolDrawer ()
virtual QRect	calcBRect (const DtSymbol *const symbol) const
virtual void	processHiddenSymbolAction (QPainter &paint, const DtSymbol *const symbol)
	Routine to perform even when symbol is hidden.

Protected Member Functions
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 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 DtBaseSymbolDrawer
virtual QRgb	opaqueColor () const
	! Returns color that will be ignored during transparent draw
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
DtPtrQList< DtSymbolDrawer * >	mySymbolDrawers
DtPtrQList< DtSymbolDrawer * >	myDrawersToDestroy

Private Member Functions
	DtCompositeDrawer (const DtCompositeDrawer &orig)
DtCompositeDrawer &	operator= (const DtCompositeDrawer &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 maintain a collection of drawers that will be called in turn to draw the specified symbol

Constructor & Destructor Documentation

DtCompositeDrawer::DtCompositeDrawer

(

)

virtual DtCompositeDrawer::~DtCompositeDrawer ( )

virtual

DtCompositeDrawer::DtCompositeDrawer ( const DtCompositeDrawer &  orig )

private

Member Function Documentation

virtual bool DtCompositeDrawer::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 QSize DtCompositeDrawer::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 DtCompositeDrawer::addDrawer ( DtSymbolDrawer *  drawer )

virtual

virtual void DtCompositeDrawer::removeDrawer ( DtSymbolDrawer *  drawer )

virtual

virtual DtPtrQList<DtSymbolDrawer*>* DtCompositeDrawer::drawers ( )

virtual

void DtCompositeDrawer::destroyDrawer ( DtSymbolDrawer *  d, bool  add = true  )

inline

Call this routine to add a composite drawer to destroy that is part of this drawer when this drawer is destroyed.

If add is false, removes the drawer from the destroyed list

References DtPtrQList< T >::findRef(), myDrawersToDestroy, and DtPtrQList< T >::remove().

virtual bool DtCompositeDrawer::forceUpdate ( const DtSymbol *const  symbol ) const

protectedvirtual

Override if your class wants to force a redraw of this item regardless of performance enhancement state.

By default this returns false

Reimplemented from DtSymbolDrawer.

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

protectedvirtual

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

Noop for this drawer

Reimplemented from DtSymbolDrawer.

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

private

Member Data Documentation

DtPtrQList<DtSymbolDrawer*> DtCompositeDrawer::mySymbolDrawers

protected

DtPtrQList<DtSymbolDrawer*> DtCompositeDrawer::myDrawersToDestroy

protected

Referenced by destroyDrawer().

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

• include/symbolDrawer/compositeDrawer.h