Logo Search packages:      
Sourcecode: qt4-x11 version File versions

QConicalGradient Class Reference

Inheritance diagram for QConicalGradient:


List of all members.

Detailed Description

The QConicalGradient class is used in combination with QBrush to specify a conical gradient brush.

Conical gradients interpolate interpolate colors counter-clockwise around a center point.

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 QConicalGradient class provides the angle() and center() functions returning the start angle and center of the gradient.

Note that the setSpread() function has no effect for conical gradients. The reason is that the conical gradient is closed by definition, i.e. the conical gradient fills the entire circle from 0 - 360 degrees, while the boundary of a radial or a linear gradient can be specified through its radius or final stop points, respectively.

See also:
QLinearGradient, QRadialGradient, {demos/gradients}{The Gradients Demo}

Definition at line 298 of file qbrush.h.

Public Types

enum  CoordinateMode { LogicalMode, StretchToDeviceMode, ObjectBoundingMode }
enum  Spread { PadSpread, ReflectSpread, RepeatSpread }
enum  Type { LinearGradient, RadialGradient, ConicalGradient, NoGradient }

Public Member Functions

qreal angle () const
QPointF center () const
CoordinateMode coordinateMode () const
bool operator!= (const QGradient &other) const
bool operator== (const QGradient &gradient)
bool operator== (const QGradient &gradient) const
 QConicalGradient (qreal cx, qreal cy, qreal startAngle)
 QConicalGradient (const QPointF &center, qreal startAngle)
 QConicalGradient ()
void setAngle (qreal angle)
void setCenter (qreal x, qreal y)
void setCenter (const QPointF &center)
void setColorAt (qreal pos, const QColor &color)
void setCoordinateMode (CoordinateMode mode)
void setSpread (Spread spread)
void setStops (const QGradientStops &stops)
Spread spread () const
QGradientStops stops () const
Type type () const

Related Functions

(Note that these are not member functions.)


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

Generated by  Doxygen 1.6.0   Back to index