class QPieSlice¶

The QPieSlice class represents a single slice in a pie series. More…

Added in version 6.8.

Synopsis¶

Properties¶

angleSpanᅟ - Span of the slice in degrees. A full pie is 360 degrees, where 0 degrees is at 12 a’clock. Updated automatically once the slice is added to the series
borderColorᅟ - Color used to draw the slice border. This is a convenience property for modifying the slice
borderWidthᅟ - Width of the slice border. This is a convenience property for modifying the slice border width
brushᅟ
colorᅟ - Fill color of the slice. This is a convenience property for modifying the slice fill color
explodeDistanceFactorᅟ - Determines how far away from the pie the slice is exploded
explodedᅟ - Whether the slice is separated from the pie
labelᅟ - Of the slice
labelArmLengthFactorᅟ - Length of the label arm. The factor is relative to the pie radius. For example:
labelBrushᅟ
labelColorᅟ - Color used to draw the slice label
labelFontᅟ - Font used for drawing the label text
labelPositionᅟ - Position of the slice label
labelVisibleᅟ - Visibility of the slice label. By default, the label is not visible
penᅟ
percentageᅟ - Of the slice compared to the sum of all slices in the series. The actual value ranges from 0.0 to 1.0. Updated automatically once the slice is added to the series
startAngleᅟ - Starting angle of this slice in the series it belongs to. A full pie is 360 degrees, where 0 degrees is at 12 a’clock. Updated automatically once the slice is added to the series
valueᅟ - Of the slice

Methods¶

def __init__()
def angleSpan()
def borderColor()
def borderWidth()
def brush()
def color()
def explodeDistanceFactor()
def isExploded()
def isLabelVisible()
def label()
def labelArmLengthFactor()
def labelBrush()
def labelColor()
def labelFont()
def pen()
def percentage()
def setBorderColor()
def setBorderWidth()
def setBrush()
def setColor()
def setExplodeDistanceFactor()
def setExploded()
def setLabel()
def setLabelArmLengthFactor()
def setLabelBrush()
def setLabelColor()
def setLabelFont()
def setLabelVisible()
def setPen()
def setValue()
def startAngle()
def value()

Signals¶

def angleSpanChanged()
def borderColorChanged()
def borderWidthChanged()
def brushChanged()
def clicked()
def colorChanged()
def doubleClicked()
def hovered()
def labelBrushChanged()
def labelChanged()
def labelColorChanged()
def labelFontChanged()
def labelVisibleChanged()
def penChanged()
def percentageChanged()
def pressed()
def released()
def startAngleChanged()
def valueChanged()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

Detailed Description¶

A pie slice has a value and a label. When the slice is added to a pie series, the QPieSeries object calculates the percentage of the slice compared with the sum of all slices in the series to determine the actual size of the slice in the graph.

By default, the label is hidden. If it is visible, it can be either located outside the slice and connected to it with an arm or centered inside the slice either horizontally or in parallel with the tangential or normal of the slice’s arc.

By default, the visual appearance of the slice is set by a theme, but the theme can be overridden by specifying slice properties. However, if the theme is changed after the slices are customized, all customization will be lost.

To enable user interaction with the pie graph, some basic signals are emitted when users click pie slices or hover the mouse over them.

See also

QPieSeries

class LabelPosition¶

This enum describes the position of the slice label.

Constant

Description

QPieSlice.LabelPosition.Outside

The label is located outside the slice connected to it with an arm. This is the default value.

QPieSlice.LabelPosition.InsideHorizontal

The label is centered within the slice and laid out horizontally.

QPieSlice.LabelPosition.InsideTangential

The label is centered within the slice and rotated to be parallel with the tangential of the slice’s arc.

QPieSlice.LabelPosition.InsideNormal

The label is centered within the slice and rotated to be parallel with the normal of the slice’s arc.

Constant	Description
QPieSlice.LabelPosition.Outside	The label is located outside the slice connected to it with an arm. This is the default value.
QPieSlice.LabelPosition.InsideHorizontal	The label is centered within the slice and laid out horizontally.
QPieSlice.LabelPosition.InsideTangential	The label is centered within the slice and rotated to be parallel with the tangential of the slice’s arc.
QPieSlice.LabelPosition.InsideNormal	The label is centered within the slice and rotated to be parallel with the normal of the slice’s arc.

Note

Properties can be used directly when from __feature__ import true_property is used or via accessor functions otherwise.

property angleSpanᅟ: float¶

This property holds The span of the slice in degrees. A full pie is 360 degrees, where 0 degrees is at 12 a’clock. Updated automatically once the slice is added to the series..

Access functions:

angleSpan()
Signal angleSpanChanged()

property borderColorᅟ: QColor¶

This property holds The color used to draw the slice border. This is a convenience property for modifying the slice..

See also

borderWidth

Access functions:

borderColor()
setBorderColor()
Signal borderColorChanged()

property borderWidthᅟ: int¶

This property holds The width of the slice border. This is a convenience property for modifying the slice border width..

See also

borderColor

Access functions:

borderWidth()
setBorderWidth()
Signal borderWidthChanged()

property brushᅟ: QBrush¶

Access functions:

brush()
setBrush()
Signal brushChanged()

property colorᅟ: QColor¶

This property holds The fill color of the slice. This is a convenience property for modifying the slice fill color..

Access functions:

color()
setColor()
Signal colorChanged()

property explodeDistanceFactorᅟ: float¶

This property Determines how far away from the pie the slice is exploded..

1.0 means that the distance is the same as the radius.

0.5 means that the distance is half of the radius.

By default, the distance is 0.15

See also

exploded

Access functions:

explodeDistanceFactor()
setExplodeDistanceFactor()

property explodedᅟ: bool¶

This property holds Whether the slice is separated from the pie..

See also

explodeDistanceFactor

Access functions:

isExploded()
setExploded()

property labelᅟ: str¶

This property holds The label of the slice..

Note

The string can be HTML formatted.

See also

labelVisible labelFont labelArmLengthFactor

Access functions:

label()
setLabel()
Signal labelChanged()

property labelArmLengthFactorᅟ: float¶

This property holds The length of the label arm. The factor is relative to the pie radius. For example:.

1.0 means that the length is the same as the radius.

0.5 means that the length is half of the radius.

By default, the arm length is 0.15

See also

label labelVisible labelFont

Access functions:

labelArmLengthFactor()
setLabelArmLengthFactor()

property labelBrushᅟ: QBrush¶

Access functions:

labelBrush()
setLabelBrush()
Signal labelBrushChanged()

property labelColorᅟ: QColor¶

This property holds The color used to draw the slice label..

Access functions:

labelColor()
setLabelColor()
Signal labelColorChanged()

property labelFontᅟ: QFont¶

This property holds The font used for drawing the label text..

See also

label labelVisible labelArmLengthFactor

Access functions:

labelFont()
setLabelFont()
Signal labelFontChanged()

property labelPositionᅟ: QPieSlice.LabelPosition¶

This property holds The position of the slice label..

See also

label labelVisible

Access functions:

property labelVisibleᅟ: bool¶

This property holds The visibility of the slice label. By default, the label is not visible..

See also

label labelFont labelArmLengthFactor

Access functions:

isLabelVisible()
setLabelVisible()
Signal labelVisibleChanged()

property penᅟ: QPen¶

Access functions:

pen()
setPen()
Signal penChanged()

property percentageᅟ: float¶

This property holds The percentage of the slice compared to the sum of all slices in the series. The actual value ranges from 0.0 to 1.0. Updated automatically once the slice is added to the series..

See also

value sum

Access functions:

percentage()
Signal percentageChanged()

property startAngleᅟ: float¶

This property holds The starting angle of this slice in the series it belongs to. A full pie is 360 degrees, where 0 degrees is at 12 a’clock. Updated automatically once the slice is added to the series..

Access functions:

startAngle()
Signal startAngleChanged()

property valueᅟ: float¶

This property holds The value of the slice..

Note

A negative value is converted to a positive value.

See also

percentage() sum()

Access functions:

value()
setValue()
Signal valueChanged()

__init__([parent=None])¶

Parameters:: parent – QObject

Constructs an empty slice with the parent parent.

See also

append() insert()

__init__(label, value[, parent=None])

Parameters:

label – str
value – float
parent – QObject

Constructs an empty slice with the specified value, label, and parent.

See also

append() insert()

angleSpan()¶

Return type:: float

Getter of property angleSpanᅟ .

angleSpanChanged()¶

Notification signal of property angleSpanᅟ .

borderColor()¶

Return type:: QColor

Getter of property borderColorᅟ .

borderColorChanged()¶

Notification signal of property borderColorᅟ .

borderWidth()¶

Return type:: int

Getter of property borderWidthᅟ .

borderWidthChanged()¶

Notification signal of property borderWidthᅟ .

brush()¶

Return type:: QBrush

Getter of property brushᅟ .

brushChanged()¶

Notification signal of property brushᅟ .

clicked()¶

color()¶

Return type:: QColor

Getter of property colorᅟ .

colorChanged()¶

Notification signal of property colorᅟ .

doubleClicked()¶

explodeDistanceFactor()¶

Return type:: float

See also

setExplodeDistanceFactor()

Getter of property explodeDistanceFactorᅟ .

hovered(state)¶

Parameters:: state – bool

isExploded()¶

Return type:: bool

Getter of property explodedᅟ .

isLabelVisible()¶

Return type:: bool

Getter of property labelVisibleᅟ .

label()¶

Return type:: str

See also

setLabel()

Getter of property labelᅟ .

labelArmLengthFactor()¶

Return type:: float

See also

setLabelArmLengthFactor()

Getter of property labelArmLengthFactorᅟ .

labelBrush()¶

Return type:: QBrush

Getter of property labelBrushᅟ .

labelBrushChanged()¶

Notification signal of property labelBrushᅟ .

labelChanged()¶

Notification signal of property labelᅟ .

labelColor()¶

Return type:: QColor

Getter of property labelColorᅟ .

labelColorChanged()¶

Notification signal of property labelColorᅟ .

labelFont()¶

Return type:: QFont

See also

setLabelFont()

Getter of property labelFontᅟ .

labelFontChanged()¶

Notification signal of property labelFontᅟ .

labelVisibleChanged()¶

Notification signal of property labelVisibleᅟ .

pen()¶

Return type:: QPen

Getter of property penᅟ .

penChanged()¶

Notification signal of property penᅟ .

percentage()¶

Return type:: float

Getter of property percentageᅟ .

percentageChanged()¶

Notification signal of property percentageᅟ .

pressed()¶

released()¶

setBorderColor(color)¶

Parameters:: color – QColor

See also

borderColor()

Setter of property borderColorᅟ .

setBorderWidth(width)¶

Parameters:: width – int

See also

borderWidth()

Setter of property borderWidthᅟ .

setBrush(brush)¶

Parameters:: brush – QBrush

Setter of property brushᅟ .

setColor(color)¶

Parameters:: color – QColor

See also

color()

Setter of property colorᅟ .

setExplodeDistanceFactor(factor)¶

Parameters:: factor – float

See also

explodeDistanceFactor()

Setter of property explodeDistanceFactorᅟ .

setExploded([exploded=true])¶

Parameters:: exploded – bool

See also

isExploded()

Setter of property explodedᅟ .

setLabel(label)¶

Parameters:: label – str

See also

label()

Setter of property labelᅟ .

setLabelArmLengthFactor(factor)¶

Parameters:: factor – float

See also

labelArmLengthFactor()

Setter of property labelArmLengthFactorᅟ .

setLabelBrush(brush)¶

Parameters:: brush – QBrush

Setter of property labelBrushᅟ .

setLabelColor(color)¶

Parameters:: color – QColor

See also

labelColor()

Setter of property labelColorᅟ .

setLabelFont(font)¶

Parameters:: font – QFont

See also

labelFont()

Setter of property labelFontᅟ .

setLabelVisible([visible=true])¶

Parameters:: visible – bool

See also

isLabelVisible()

Setter of property labelVisibleᅟ .

setPen(pen)¶

Parameters:: pen – QPen

Setter of property penᅟ .

setValue(value)¶

Parameters:: value – float

See also

value()

Setter of property valueᅟ .

startAngle()¶

Return type:: float

Getter of property startAngleᅟ .

startAngleChanged()¶

Notification signal of property startAngleᅟ .

value()¶

Return type:: float

See also

setValue()

Getter of property valueᅟ .

valueChanged()¶

Notification signal of property valueᅟ .