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QtGui.QConicalGradient Class Reference

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

Inheritance diagram for QtGui.QConicalGradient:
Collaboration diagram for QtGui.QConicalGradient:

Public Member Functions

 QConicalGradient ()
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 QConicalGradient (QConicalGradient copy)
 
 QConicalGradient (QPointF center, double startAngle)
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 QConicalGradient (double cx, double cy, double startAngle)
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override void CreateProxy ()
 
new void SetCenter (double x, double y)
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new void Dispose ()
 
- Public Member Functions inherited from QtGui.QGradient
override bool Equals (object o)
 
override int GetHashCode ()
 
 QGradient ()
 
 QGradient (QGradient copy)
 
new void SetColorAt (double pos, QColor color)
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new void Dispose ()
 

Protected Member Functions

 QConicalGradient (System.Type dummy)
 
- Protected Member Functions inherited from QtGui.QGradient
 QGradient (System.Type dummy)
 

Properties

double Angle [get, set]
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QPointF Center [get, set]
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- Properties inherited from QtGui.QGradient
QGradient.CoordinateMode coordinateMode [get, set]
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QGradient.InterpolationMode interpolationMode [get, set]
 
QGradient.Spread spread [get, set]
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QGradient.Type type [get]
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virtual System.IntPtr SmokeObject [get, set]
 
static new QMetaObject StaticMetaObject [get]
 

Additional Inherited Members

- Public Types inherited from QtGui.QGradient
enum  CoordinateMode { LogicalMode = 0, ObjectBoundingMode = 2, StretchToDeviceMode = 1 }
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enum  InterpolationMode { ColorInterpolation = 0, ComponentInterpolation = 1 }
 
enum  Spread { PadSpread = 0, ReflectSpread = 1, RepeatSpread = 2 }
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enum  Type { ConicalGradient = 2, LinearGradient = 0, NoGradient = 3, RadialGradient = 1 }
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- Static Public Member Functions inherited from QtGui.QGradient
static bool operator!= (QGradient one, QGradient other)
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static bool operator== (QGradient one, QGradient gradient)
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- Protected Attributes inherited from QtGui.QGradient
SmokeInvocation interceptor
 

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, and The Gradients Demo.

Constructor & Destructor Documentation

QtGui.QConicalGradient.QConicalGradient ( System.Type  dummy)
protected
QtGui.QConicalGradient.QConicalGradient ( )

Constructs a conical with center at (0, 0) starting the interpolation at angle 0.

See also QGradient::setColorAt(), setCenter(), and setAngle().

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QtGui.QConicalGradient.QConicalGradient ( QConicalGradient  copy)

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QtGui.QConicalGradient.QConicalGradient ( QPointF  center,
double  startAngle 
)

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.

See also QGradient::setColorAt() and QGradient::setStops().

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QtGui.QConicalGradient.QConicalGradient ( double  cx,
double  cy,
double  startAngle 
)

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.

See also QGradient::setColorAt() and QGradient::setStops().

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Member Function Documentation

override void QtGui.QConicalGradient.CreateProxy ( )
virtual

Reimplemented from QtGui.QGradient.

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new void QtGui.QConicalGradient.Dispose ( )
new void QtGui.QConicalGradient.SetCenter ( double  x,
double  y 
)

This is an overloaded function.

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

See also center().

Property Documentation

double QtGui.QConicalGradient.Angle
getset

Returns the start angle of the conical gradient in logical coordinates.

Sets angle to be the start angle for this conical gradient in logical coordinates.

This function was introduced in Qt 4.2.

QPointF QtGui.QConicalGradient.Center
getset

Returns the center of the conical gradient in logical coordinates.

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