PieItem QML Type
A pie. More...
| Import Statement: | import QtQuick.Studio.Components |
| Since: | QtQuick.Studio.Components 1.0 |
| Inherits: |
Properties
- alpha : real
- begin : real
- capStyle : int
- dashOffset : alias
- dashPattern : alias
- end : real
- fillColor : alias
- gradient : alias
- hideLine : bool
- joinStyle : int
- strokeColor : alias
- strokeStyle : int
- strokeWidth : alias
Detailed Description
The Pie type is used to create a pie slice, a pie that is missing slices, or just the pie stroke (similar to an ArcItem), depending on the begin and end property values and the hideLine value.
The filling of the pie is painted using either a solid fill color, specified using the fillColor property, or a gradient, defined using one of the ShapeGradient subtypes and set using the gradient property. If both a color and a gradient are specified, the gradient is used.
The strokeColor, strokeWidth, and strokeStyle properties specify the appearance of the pie outline. The dashPattern and dashOffset properties specify the appearance of dashed lines.
The capStyle property specifies whether line ends are square or rounded.
Example Usage
You can use the Pie component in Qt Design Studio to create different kinds of pies.
The QML code looks as follows:
PieItem {
id: pieSlice
x: 920
y: 416
strokeWidth: -1
antialiasing: true
strokeColor: "gray"
fillColor: "light gray"
}
PieItem {
id: pie
x: 1118
y: 407
end: 300
fillColor: "#d3d3d3"
strokeColor: "#808080"
antialiasing: true
}
PieItem {
id: pieStroke
x: 1022
y: 548
fillColor: "#00ffffff"
strokeWidth: 4
capStyle: 32
hideLine: true
end: 300
strokeColor: "#808080"
antialiasing: true
}Property Documentation
begin : real |
The position in degrees where the pie begins.
The default value is 0.
To create a circle, set the value of this property to 0 and the value of the end property to 360.
capStyle : int |
The cap style defines how the end points of lines are drawn using QPainter. The cap style only applies to lines with width 1 or greater. The cap style can be square, flat, or round.
The default is Qt::SquareCap
See also QPen::capStyle().
dashOffset : alias |
The starting point of the dash pattern for the pie border.
The offset is measured in terms of the units used to specify the dash pattern. For example, a pattern where each stroke is four units long, followed by a gap of two units, will begin with the stroke when drawn as a line. However, if the dash offset is set to 4.0, any line drawn will begin with the gap. Values of the offset up to 4.0 will cause part of the stroke to be drawn first, and values of the offset between 4.0 and 6.0 will cause the line to begin with part of the gap.
The default value is 0.
See also QPen::setDashOffset().
dashPattern : alias |
The dash pattern of the pie border specified as the dashes and the gaps between them.
The dash pattern is specified in units of the pen's width. That is, a dash with the length 5 and width 10 is 50 pixels long.
Each dash is also subject to cap styles, and therefore a dash of 1 with square cap set will extend 0.5 pixels out in each direction resulting in a total width of 2.
The default value is (4, 2), meaning a dash of 4 * strokeWidth pixels followed by a space of 2 * strokeWidth pixels.
See also QPen::setDashPattern().
end : real |
The position in degrees where the pie ends.
The default value is 90.
To create a circle, set the value of this property to 360 and the value of the begin property to 0.
fillColor : alias |
The pie fill color.
A pie can be filled with a solid color or with any of the linear, radial, or conical gradients.
When set to transparent, no filling occurs.
The default value is white.
If hideLine is false, a pie slice is drawn using the values of the begin and end properties and filled with this color.
If hideLine is true, just the pie stroke is drawn and the area between the begin and end points is filled.
gradient : alias |
The gradient of the pie fill color.
By default, no gradient is enabled and the value is null. In this case, the fill uses a solid color based on the value of fillColor.
When set, fillColor is ignored and filling is done using one of the ShapeGradient subtypes.
joinStyle : int |
The join style is used to connect two border line segments.
| Constant | Description |
|---|---|
ShapePath.MiterJoin | The outer edges of the lines are extended to meet at an angle, and this area is filled. |
ShapePath.BevelJoin | The triangular notch between the two lines is filled. This is the default value. |
ShapePath.RoundJoin | A circular arc between the two lines is filled. |
See also Qt::PenJoinStyle.
strokeColor : alias |
The color used to draw the border of the pie. When set to transparent, no line is drawn. The default value is red.
See also QColor.
strokeStyle : int |
The style of the pie stroke.
When set to None, no stroke is drawn.
The stroke can be set to have a Solid, Dash, Dot, Dash Dot, or Dash Dot Dot pattern.
The default value is Solid.
strokeWidth : alias |
The width of the border of the pie. The default value is 4. A width of 1 creates a thin line. For no line, use a negative value or a transparent color.
Note: The width of the pie's border does not affect the geometry of the pie itself or its position relative to other items if anchors are used.
The border is rendered within the pie's boundaries.
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