The QLinearGradient class is used in combination with QBrush to specify a linear gradient brush. More...

Inheritance diagram for QLinearGradient:

Public Methods
	QLinearGradient ()

	QLinearGradient (const QPointF &start, const QPointF &finalStop)

	QLinearGradient (qreal x1, qreal y1, qreal x2, qreal y2)

QPointF	finalStop () const

void	setFinalStop (const QPointF &stop)

void	setFinalStop (qreal x, qreal y)

void	setStart (const QPointF &start)

void	setStart (qreal x, qreal y)

QPointF	start () const

Public Methods inherited from QGradient
CoordinateMode	coordinateMode () const

InterpolationMode	interpolationMode () const

bool	operator!= (const QGradient &other) const

bool	operator== (const QGradient &other) const

void	setColorAt (qreal position, const QColor &color)

void	setCoordinateMode (CoordinateMode mode)

void	setInterpolationMode (InterpolationMode mode)

void	setSpread (Spread spreadType)

void	setStops (const QVector< QPair< qreal, QColor >> &stops)

Spread	spread () const

QVector< QPair< qreal, QColor > >	stops () const

Type	type () const

Additional Inherited Members
Public Types inherited from QGradient
enum	CoordinateMode

enum	InterpolationMode

enum	Spread

enum	Type

Detailed Description

The QLinearGradient class is used in combination with QBrush to specify a linear gradient brush.

Linear gradients interpolate colors between start and end points. Outside these points the gradient is either padded, reflected or repeated depending on the currently set spread method:


PadSpread (default)	ReflectSpread	RepeatSpread

The colors in a gradient is defined using stop points of the QGradientStop type, i.e. a position and a color. Use the QGradient::setColorAt() or the QGradient::setStops() function to define the stop points. It is the gradient's complete set of stop points that describes how the gradient area should be filled. If no stop points have been specified, a gradient of black at 0 to white at 1 is used.

In addition to the functions inherited from QGradient, the QLinearGradient class provides the finalStop() function which returns the final stop point of the gradient, and the start() function returning the start point of the gradient.

See also: QRadialGradient, QConicalGradient

Constructor & Destructor Documentation

QLinearGradient::QLinearGradient ( )

Constructs a default linear gradient with interpolation area between (0, 0) and (1, 1).

See also: QGradient::setColorAt(), setStart(), setFinalStop()

QLinearGradient::QLinearGradient	(	const QPointF &	start,
		const QPointF &	finalStop
	)

Constructs a linear gradient with interpolation area between the given start point and finalStop.

Note: The expected parameter values are in pixels.

See also: QGradient::setColorAt(), QGradient::setStops()

QLinearGradient::QLinearGradient	(	qreal	x1,
		qreal	y1,
		qreal	x2,
		qreal	y2
	)

Constructs a linear gradient with interpolation area between (x1, y1) and (x2, y2).

Note: The expected parameter values are in pixels.

See also: QGradient::setColorAt(), QGradient::setStops()

Method Documentation

QPointF QLinearGradient::finalStop ( ) const

Returns the final stop point of this linear gradient in logical coordinates.

See also: setFinalStop(), QGradient::stops()

void QLinearGradient::setFinalStop ( const QPointF & stop )

Sets the final stop point of this linear gradient in logical coordinates to stop.

See also: finalStop()

void QLinearGradient::setFinalStop	(	qreal	x,
		qreal	y
	)

inline

Sets the final stop point of this linear gradient in logical coordinates to x, y.

See also: start()

void QLinearGradient::setStart ( const QPointF & start )

Sets the start point of this linear gradient in logical coordinates to start.

See also: start()

void QLinearGradient::setStart	(	qreal	x,
		qreal	y
	)

inline

Sets the start point of this linear gradient in logical coordinates to x, y.

See also: start()

QPointF QLinearGradient::start ( ) const

Returns the start point of this linear gradient in logical coordinates.

See also: setStart(), QGradient::stops()

Public Methods

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Method Documentation