PieSeries QML Type

ChartView {
    id: chart
    title: "Top-5 car brand shares in Finland"
    anchors.fill: parent
    legend.alignment: Qt.AlignBottom
    antialiasing: true
    PieSeries {
        id: pieSeries
        PieSlice { label: "Volkswagen"; value: 13.5 }
        PieSlice { label: "Toyota"; value: 10.9 }
        PieSlice { label: "Ford"; value: 8.6 }
        PieSlice { label: "Skoda"; value: 8.2 }
        PieSlice { label: "Volvo"; value: 6.8 }
    }
}
Component.onCompleted: {
    // You can also manipulate slices dynamically, like append a slice or set a slice exploded
    othersSlice = pieSeries.append("Others", 52.0);
    pieSeries.find("Volkswagen").exploded = true;
}
					

另请参阅 PieSlice and ChartView .

特性文档编制

The number of slices in the series.

The ending angle of the pie.

A full pie is 360 degrees, where 0 degrees is at 12 a'clock.

The default value is 360.

The donut hole size.

The value is relative to the chart rectangle, so that:

• 0.0 is the minimum size (full pie drawn without a hole).
• 1.0 is the maximum size that can fit the chart (the donut has no width).

当设置此特性时， size property is adjusted if necessary, to ensure that the hole size is not greater than the pie size.

The default value is 0.0.

The horizontal position of the pie.

The value is relative to the chart rectangle, so that:

• 0.0 is the absolute left.
• 1.0 is the absolute right.

The default value is 0.5 (center).

另请参阅 verticalPosition .

The pie size.

The value is relative to the chart rectangle, so that:

• 0.0 is the minimum size (pie not drawn).
• 1.0 is the maximum size that can fit the chart.

当设置此特性时， holeSize property is adjusted if necessary, to ensure that the hole size is not greater than the pie size.

The default value is 0.7.

The starting angle of the pie.

A full pie is 360 degrees, where 0 degrees is at 12 a'clock.

默认值为 0。

The sum of all slices.

The series keeps track of the sum of all the slices it holds.

The vertical position of the pie.

The value is relative to the chart rectangle, so that:

• 0.0 is the absolute top.
• 1.0 is the absolute bottom.

The default value is 0.5 (center).

另请参阅 horizontalPosition .

信号文档编制

This signal is emitted when the slices specified by slices are added to the series.

The corresponding signal handler is onAdded .

This signal is emitted when the slice specified by slice 被点击。

The corresponding signal handler is onClicked .

This signal is emitted when the slice specified by slice is double-clicked.

The corresponding signal handler is onDoubleClicked .

This signal is emitted when a mouse is hovered over the slice specified by slice . When the mouse moves over the slice, state turns true , and when the mouse moves away again, it turns false .

The corresponding signal handler is onHovered .

This signal is emitted when the user clicks the slice specified by slice and holds down the mouse button.

The corresponding signal handler is onPressed .

This signal is emitted when the user releases the mouse press on the slice specified by slice .

The corresponding signal handler is onReleased .

This signal is emitted when the slices specified by slices are removed from the series.

The corresponding signal handler is onRemoved .

This signal is emitted when the slice specified by slice is added to the series.

The corresponding signal handler is onSliceAdded .

This signal is emitted when the slice specified by slice is removed from the series.

The corresponding signal handler is onSliceRemoved .

方法文档编制

Adds a new slice with the label label and the value value to the pie.

Returns the slice at the position specified by index . Returns null if the index is not valid.

Removes all slices from the pie.

Returns the first slice that has the label label . Returns null if the label is not found.

Removes the slice specified by slice from the pie. Returns true if the removal was successful, false 否则。