DtCircleSymbol Class Reference

Symbols representing circles and ellipses. More...

Inheritance diagram for DtCircleSymbol:

List of all members.

Public Types
enum	DtCircleStyle {   DtStyle_NoCircle = 0, DtStyle_Outline, DtStyle_Fill, DtStyle_Pattern,   DtStyle_NoEntry, DtStyle_CrossHair, DtStyle_Pie, DtStyle_CircleStyle_MAX }
Public Member Functions
	DtCircleSymbol (DtSymbolDrawer &drawer)
	Constructor.
	DtCircleSymbol (DtNullDrawer &drawer)
	Constructor.
	DtCircleSymbol (const DtCircleSymbol &orig)
	Copy Constructor.
DtCircleSymbol &	operator= (const DtCircleSymbol &orig)
	Assignment Operatior.
virtual	~DtCircleSymbol ()
	Destructor.
virtual DtSymbol *	clone () const
	Create a clone of this symbol.
virtual void	setRadius (const double r)
	Set the radius of the the circle.
virtual double	radius () const
	Get the radius of the circle.
virtual void	setYRadius (const double r)
	Set the horizontal radius of an ellipse.
virtual double	yRadius () const
	Get the horizontal radius of an ellipse.
virtual void	setRotationDegrees (const double rot)
	Set the number of degrees to rotate the ellipse.
virtual double	rotationDegrees () const
	Get the number of degrees to rotate the ellipse.
virtual void	setCircleStyle (DtCircleStyle style)
	Style settings.
virtual DtCircleStyle	circleStyle () const
virtual void	setBrushStyle (Qt::BrushStyle style)
virtual Qt::BrushStyle	brushStyle () const
virtual void	setPenStyle (Qt::PenStyle style)
virtual Qt::PenStyle	penStyle () const
virtual bool	select (const QPoint &aPoint)
	Check to see if the circle or origin is selected.
virtual bool	select (const QPoint &aPoint, const QSize &aSize)
	Returns true if the rectangle intersects the symbol, if the symbol is selectable.
virtual bool	pointInCircle (const QPoint &aPoint, QPoint &centerPoint, float xRadius, float yRadius, int penThickness)
	See if the supplied point is within the given filled circle.
virtual bool	rectInCircle (const QRect &aPoint, QPoint &centerPoint, float xRadius, float yRadius, int penThickness)
	See if the supplied rectangle is within the given filled circle.
virtual bool	rectInSmallerCircle (const QRect &aRect, QPoint &centerPoint, float xRadius, float yRadius, int penThickness)
bool	operator== (const DtCircleSymbol &orig) const
bool	operator!= (const DtCircleSymbol &orig) const
virtual bool	transparentCacheChanged () const
virtual void	setArcInfo (double radius, int sweep, double arcStartAngle)
	Information for drawing arcs in circle drawer arcEnd is center point of arc end and sweep is the angle of sweep (0 to 360).
virtual const DtArcInfo *	arcInfo () const
virtual void	clearArcInfo ()
virtual Qt::PenStyle	crossHairStyle () const
virtual void	setCrossHairStyle (Qt::PenStyle style)
virtual bool	patternCacheChanged () const
virtual void	cachePatternVariables ()
virtual bool	needsPatternRedraw () const
virtual QPixmap *	patternImage () const
virtual QPixmap *	cachePatternImage (const QPixmap &pixmap)
void	setScaleRadiusByScaleFactor (bool)
	If true, when returning radius, it will be scaled by the scaleBy() method.
bool	scaleRadiusByScaleFactor () const
virtual bool	isScalable () const
	Return true/false if this is a scalable symbol. By default returns false.
Protected Attributes
double	myRadius
double	myYRadius
double	myRotationDegrees
DtCircleStyle	myCircleStyle
Qt::BrushStyle	myBrushStyle
Qt::PenStyle	myPenStyle
Qt::PenStyle	myCrossHairStyle
DtArcInfo *	myArcInfo
DtSymbol *	myPatternCachedSymbol
QPixmap *	myPatternImage
bool	myScaleRadiusByScaleFactor
Private Member Functions
	DtCircleSymbol ()
	Not implemented. Private to ensure it is only constructed with a drawer.

---

Detailed Description

Symbols representing circles and ellipses.

---

Member Enumeration Documentation

enum DtCircleSymbol::DtCircleStyle

Enumerator:

DtStyle_NoCircle	no drawing
DtStyle_Outline	Draw the outline
DtStyle_Fill	draw a filled circle
DtStyle_Pattern	draw a pattern filled circle
DtStyle_NoEntry	Draw the outline with an x inside
DtStyle_CrossHair	Draw the outline with a crosshair inside
DtStyle_Pie	Draws a pie wedge instead of an arc
DtStyle_CircleStyle_MAX	Hook for derived class extensions.

---

Constructor & Destructor Documentation

DtCircleSymbol::DtCircleSymbol

(

DtSymbolDrawer &

drawer

)

Constructor.

DtCircleSymbol::DtCircleSymbol

(

DtNullDrawer &

drawer

)

Constructor.

DtCircleSymbol::DtCircleSymbol

(

const DtCircleSymbol &

orig

)

Copy Constructor.

virtual DtCircleSymbol::~DtCircleSymbol

(

)

[virtual]

Destructor.

DtCircleSymbol::DtCircleSymbol

(

)

[private]

Not implemented. Private to ensure it is only constructed with a drawer.

---

Member Function Documentation

DtCircleSymbol& DtCircleSymbol::operator=

(

const DtCircleSymbol &

orig

)

Assignment Operatior.

virtual DtSymbol* DtCircleSymbol::clone

(

)

const [virtual]

Create a clone of this symbol.

Reimplemented from DtColorizedSymbol.

Reimplemented in DtResizableCircleSymbol.

virtual void DtCircleSymbol::setRadius

(

const double

r

)

[virtual]

Set the radius of the the circle.

In the case of an ellipse, this sets the horizontal radius only.

Reimplemented in DtResizableCircleSymbol.

virtual double DtCircleSymbol::radius

(

)

const [virtual]

Get the radius of the circle.

virtual void DtCircleSymbol::setYRadius

(

const double

r

)

[virtual]

Set the horizontal radius of an ellipse.

This has no effect on circles.

virtual double DtCircleSymbol::yRadius

(

)

const [virtual]

Get the horizontal radius of an ellipse.

virtual void DtCircleSymbol::setRotationDegrees

(

const double

rot

)

[virtual]

Set the number of degrees to rotate the ellipse.

This has no effect on circles.

virtual double DtCircleSymbol::rotationDegrees

(

)

const [virtual]

Get the number of degrees to rotate the ellipse.

virtual void DtCircleSymbol::setCircleStyle

(

DtCircleStyle

style

)

[virtual]

Style settings.

virtual DtCircleStyle DtCircleSymbol::circleStyle

(

)

const [virtual]

virtual void DtCircleSymbol::setBrushStyle

(

Qt::BrushStyle

style

)

[virtual]

virtual Qt::BrushStyle DtCircleSymbol::brushStyle

(

)

const [virtual]

virtual void DtCircleSymbol::setPenStyle

(

Qt::PenStyle

style

)

[virtual]

virtual Qt::PenStyle DtCircleSymbol::penStyle

(

)

const [virtual]

virtual bool DtCircleSymbol::select

(

const QPoint &

aPoint

)

[virtual]

Check to see if the circle or origin is selected.

Reimplemented from DtSymbol.

Reimplemented in DtResizableCircleSymbol.

virtual bool DtCircleSymbol::select	(	const QPoint &	aPoint,
		const QSize &	rectangleSize
	)		[virtual]

Returns true if the rectangle intersects the symbol, if the symbol is selectable.

Reimplemented from DtSymbol.

Reimplemented in DtResizableCircleSymbol.

virtual bool DtCircleSymbol::pointInCircle	(	const QPoint &	aPoint,
		QPoint &	centerPoint,
		float	xRadius,
		float	yRadius,
		int	penThickness
	)		[virtual]

See if the supplied point is within the given filled circle.

virtual bool DtCircleSymbol::rectInCircle	(	const QRect &	aPoint,
		QPoint &	centerPoint,
		float	xRadius,
		float	yRadius,
		int	penThickness
	)		[virtual]

See if the supplied rectangle is within the given filled circle.

virtual bool DtCircleSymbol::rectInSmallerCircle	(	const QRect &	aRect,
		QPoint &	centerPoint,
		float	xRadius,
		float	yRadius,
		int	penThickness
	)		[virtual]

bool DtCircleSymbol::operator==

(

const DtCircleSymbol &

orig

)

const

bool DtCircleSymbol::operator!=

(

const DtCircleSymbol &

orig

)

const

virtual bool DtCircleSymbol::transparentCacheChanged

(

)

const [virtual]

Reimplemented from DtColorizedSymbol.

Reimplemented in DtResizableCircleSymbol.

virtual void DtCircleSymbol::setArcInfo	(	double	radius,
		int	sweep,
		double	arcStartAngle
	)		[virtual]

Information for drawing arcs in circle drawer arcEnd is center point of arc end and sweep is the angle of sweep (0 to 360).

Arc start angle is the angle on the circle to start drawing the arc (counter-clockwise from 0 at top)

virtual const DtArcInfo* DtCircleSymbol::arcInfo

(

)

const [virtual]

virtual void DtCircleSymbol::clearArcInfo

(

)

[virtual]

virtual Qt::PenStyle DtCircleSymbol::crossHairStyle

(

)

const [virtual]

virtual void DtCircleSymbol::setCrossHairStyle

(

Qt::PenStyle

style

)

[virtual]

virtual bool DtCircleSymbol::patternCacheChanged

(

)

const [virtual]

virtual void DtCircleSymbol::cachePatternVariables

(

)

[virtual]

virtual bool DtCircleSymbol::needsPatternRedraw

(

)

const [virtual]

virtual QPixmap* DtCircleSymbol::patternImage

(

)

const [virtual]

virtual QPixmap* DtCircleSymbol::cachePatternImage

(

const QPixmap &

pixmap

)

[virtual]

void DtCircleSymbol::setScaleRadiusByScaleFactor

(

bool

b

)

[inline]

If true, when returning radius, it will be scaled by the scaleBy() method.

References myScaleRadiusByScaleFactor.

bool DtCircleSymbol::scaleRadiusByScaleFactor

(

)

const [inline]

References myScaleRadiusByScaleFactor.

virtual bool DtCircleSymbol::isScalable

(

)

const [virtual]

Return true/false if this is a scalable symbol. By default returns false.

Reimplemented from DtSymbol.

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Member Data Documentation

double DtCircleSymbol::myRadius [protected]

double DtCircleSymbol::myYRadius [protected]

double DtCircleSymbol::myRotationDegrees [protected]

DtCircleStyle DtCircleSymbol::myCircleStyle [protected]

Qt::BrushStyle DtCircleSymbol::myBrushStyle [protected]

Qt::PenStyle DtCircleSymbol::myPenStyle [protected]

Qt::PenStyle DtCircleSymbol::myCrossHairStyle [protected]

DtArcInfo* DtCircleSymbol::myArcInfo [protected]

DtSymbol* DtCircleSymbol::myPatternCachedSymbol [protected]

QPixmap* DtCircleSymbol::myPatternImage [protected]

bool DtCircleSymbol::myScaleRadiusByScaleFactor [protected]

Referenced by scaleRadiusByScaleFactor(), and setScaleRadiusByScaleFactor().

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

• include/symbology/circleSymbol.h