QRadialGradient

Synopsis

Functions

• def center ()
• def centerRadius ()
• def focalPoint ()
• def focalRadius ()
• def radius ()
• def setCenter (center)
• def setCenter (x, y)
• def setCenterRadius (radius)
• def setFocalPoint (focalPoint)
• def setFocalPoint (x, y)
• def setFocalRadius (radius)
• def setRadius (radius)

Detailed Description

The PySide.QtGui.QRadialGradient class is used in combination with PySide.QtGui.QBrush to specify a radial gradient brush.

Qt supports both simple and extended radial gradients.

Simple radial gradients interpolate colors between a focal point and end points on a circle surrounding it. Extended radial gradients interpolate colors between a focal circle and a center circle. Points outside the cone defined by the two circles will be transparent. For simple radial gradients the focal point is adjusted to lie inside the center circle, whereas the focal point can have any position in an extended radial gradient.

Outside the end 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 PySide.QtGui.QGradient , the PySide.QtGui.QRadialGradient class provides the PySide.QtGui.QRadialGradient.center() , PySide.QtGui.QRadialGradient.focalPoint() and PySide.QtGui.QRadialGradient.radius() functions returning the gradient’s center, focal point and radius respectively.

See also

PySide.QtGui.QLinearGradient PySide.QtGui.QConicalGradient The Gradients Demo

class PySide.QtGui.QRadialGradient

class PySide.QtGui.QRadialGradient(center, centerRadius, focalPoint, focalRadius)

class PySide.QtGui.QRadialGradient(center, radius)

class PySide.QtGui.QRadialGradient(center, radius, focalPoint)

class PySide.QtGui.QRadialGradient(QRadialGradient)

class PySide.QtGui.QRadialGradient(cx, cy, centerRadius, fx, fy, focalRadius)

class PySide.QtGui.QRadialGradient(cx, cy, radius)

class PySide.QtGui.QRadialGradient(cx, cy, radius, fx, fy)

Parameters:

• centerRadius – PySide.QtCore.qreal
• fx – PySide.QtCore.qreal
• fy – PySide.QtCore.qreal
• focalRadius – PySide.QtCore.qreal
• radius – PySide.QtCore.qreal
• center – PySide.QtCore.QPointF
• cx – PySide.QtCore.qreal
• cy – PySide.QtCore.qreal
• focalPoint – PySide.QtCore.QPointF
• QRadialGradient – PySide.QtGui.QRadialGradient

Constructs a simple radial gradient with the center and focal point at (0, 0) with a radius of 1.

Constructs an extended radial gradient with the given center , centerRadius , focalPoint , and focalRadius .

Constructs a simple radial gradient with the given center , radius and the focal point in the circle center.

See also

QGradient.setColorAt() QGradient.setStops()

Constructs a simple radial gradient with the given center , radius and focalPoint .

Note

If the given focal point is outside the circle defined by the center point and radius , it will be re-adjusted to lie at a point on the circle where it intersects with the line from center to focalPoint .

See also

QGradient.setColorAt() QGradient.setStops()

Constructs an extended radial gradient with the given center (cx , cy ), center radius, centerRadius , focal point, (fx , fy ), and focal radius focalRadius .

Constructs a simple radial gradient with the center at (cx , cy ) and the specified radius . The focal point lies at the center of the circle.

See also

QGradient.setColorAt() QGradient.setStops()

Constructs a simple radial gradient with the given center (cx , cy ), radius and focal point (fx , fy ).

Note

If the given focal point is outside the circle defined by the center (cx , cy ) and the radius it will be re-adjusted to the intersection between the line from the center to the focal point and the circle.

See also

QGradient.setColorAt() QGradient.setStops()

PySide.QtGui.QRadialGradient.center()

Return type:PySide.QtCore.QPointF

Returns the center of this radial gradient in logical coordinates.

See also

PySide.QtGui.QRadialGradient.setCenter() QGradient.stops()

PySide.QtGui.QRadialGradient.centerRadius()

Return type:PySide.QtCore.qreal

Returns the center radius of this radial gradient in logical coordinates.

See also

PySide.QtGui.QRadialGradient.setCenterRadius() QGradient.stops()

PySide.QtGui.QRadialGradient.focalPoint()

Return type:PySide.QtCore.QPointF

Returns the focal point of this radial gradient in logical coordinates.

See also

PySide.QtGui.QRadialGradient.setFocalPoint() QGradient.stops()

PySide.QtGui.QRadialGradient.focalRadius()

Return type:PySide.QtCore.qreal

Returns the focal radius of this radial gradient in logical coordinates.

See also

PySide.QtGui.QRadialGradient.setFocalRadius() QGradient.stops()

PySide.QtGui.QRadialGradient.radius()

Return type:PySide.QtCore.qreal

Returns the radius of this radial gradient in logical coordinates.

Equivalent to PySide.QtGui.QRadialGradient.centerRadius()

See also

PySide.QtGui.QRadialGradient.setRadius() QGradient.stops()

PySide.QtGui.QRadialGradient.setCenter(x, y)

Parameters:

• x – PySide.QtCore.qreal
• y – PySide.QtCore.qreal

This is an overloaded function.

Sets the center of this radial gradient in logical coordinates to (x , y ).

See also

PySide.QtGui.QRadialGradient.center()

PySide.QtGui.QRadialGradient.setCenter(center)

Parameters:center – PySide.QtCore.QPointF

Sets the center of this radial gradient in logical coordinates to center .

See also

PySide.QtGui.QRadialGradient.center()

PySide.QtGui.QRadialGradient.setCenterRadius(radius)

Parameters:radius – PySide.QtCore.qreal

Sets the center radius of this radial gradient in logical coordinates to radius

See also

PySide.QtGui.QRadialGradient.centerRadius()

PySide.QtGui.QRadialGradient.setFocalPoint(x, y)

Parameters:

• x – PySide.QtCore.qreal
• y – PySide.QtCore.qreal

This is an overloaded function.

Sets the focal point of this radial gradient in logical coordinates to (x , y ).

See also

PySide.QtGui.QRadialGradient.focalPoint()

PySide.QtGui.QRadialGradient.setFocalPoint(focalPoint)

Parameters:focalPoint – PySide.QtCore.QPointF

Sets the focal point of this radial gradient in logical coordinates to focalPoint .

See also

PySide.QtGui.QRadialGradient.focalPoint()

PySide.QtGui.QRadialGradient.setFocalRadius(radius)

Parameters:radius – PySide.QtCore.qreal

Sets the focal radius of this radial gradient in logical coordinates to radius

See also

PySide.QtGui.QRadialGradient.focalRadius()

PySide.QtGui.QRadialGradient.setRadius(radius)

Parameters:radius – PySide.QtCore.qreal

Sets the radius of this radial gradient in logical coordinates to radius

Equivalent to PySide.QtGui.QRadialGradient.setCenterRadius()

See also

PySide.QtGui.QRadialGradient.radius()