|qmake:||QT += gui|
|QConicalGradient(qreal cx, qreal cy, qreal angle)|
|QConicalGradient(const QPointF ¢er, qreal angle)|
|void||setCenter(const QPointF ¢er)|
|void||setCenter(qreal x, qreal y)|
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.
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.
Member Function Documentation
Constructs a conical gradient with the given center (cx, cy), starting the interpolation at the given angle. The angle must be specified in degrees between 0 and 360.
Constructs a conical gradient with the given center, starting the interpolation at the given angle. The angle must be specified in degrees between 0 and 360.
Constructs a conical with center at (0, 0) starting the interpolation at angle 0.
qreal QConicalGradient::angle() const
Returns the start angle of the conical gradient in logical coordinates.
QPointF QConicalGradient::center() const
Returns the center of the conical gradient in logical coordinates.
void QConicalGradient::setAngle(qreal angle)
Sets angle to be the start angle for this conical gradient in logical coordinates.
This function was introduced in Qt 4.2.
See also angle().
void QConicalGradient::setCenter(const QPointF ¢er)
Sets the center of this conical gradient in logical coordinates to center.
See also center().
This is an overloaded function.
Sets the center of this conical gradient in logical coordinates to (x, y).
See also center().
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