ShapePath QML Type

Describes a Path and associated properties for stroking and filling More...

Import Statement: import QtQuick.Shapes 1.0
Since: Qt 5.10



Detailed Description

A Shape contains one or more ShapePath elements. At least one ShapePath is necessary in order to have a Shape output anything visible. A ShapePath itself is a Path with additional properties describing the stroking and filling parameters, such as the stroke width and color, the fill color or gradient, join and cap styles, and so on. As with ordinary Path objects, ShapePath also contains a list of path elements like PathMove, PathLine, PathCubic, PathQuad, PathArc, together with a starting position.

Any property changes in these data sets will be bubble up and change the output of the Shape. This means that it is simple and easy to change, or even animate, the starting and ending position, control points, or any stroke or fill parameters using the usual QML bindings and animation types like NumberAnimation.

In the following example the line join style changes automatically based on the value of joinStyleIndex:

ShapePath {
    strokeColor: "black"
    strokeWidth: 16
    fillColor: "transparent"
    capStyle: ShapePath.RoundCap

    property int joinStyleIndex: 0
    property variant styles: [ ShapePath.BevelJoin, ShapePath.MiterJoin, ShapePath.RoundJoin ]

    joinStyle: styles[joinStyleIndex]

    startX: 30
    startY: 30
    PathLine { x: 100; y: 100 }
    PathLine { x: 30; y: 100 }

Once associated with a Shape, here is the output with a joinStyleIndex of 2 (ShapePath.RoundJoin):

See also Qt Quick Examples - Shapes and Shape.

Property Documentation

capStyle : enumeration

This property defines how the end points of lines are drawn. The default value is ShapePath.SquareCap.

  • ShapePath.FlatCap - A square line end that does not cover the end point of the line.
  • ShapePath.SquareCap - A square line end that covers the end point and extends beyond it by half the line width.
  • ShapePath.RoundCap - A rounded line end.

dashOffset : real

This property defines the starting point on the dash pattern, measured in units used to specify the dash pattern.

The default value is 0.

See also QPen::setDashOffset().

dashPattern : list<real>

This property defines the dash pattern when ShapePath.strokeStyle is set to ShapePath.DashLine. The pattern must be specified as an even number of positive entries where the entries 1, 3, 5... are the dashes and 2, 4, 6... are the spaces. The pattern is specified in units of the pen's width.

The default value is (4, 2), meaning a dash of 4 * ShapePath.strokeWidth pixels followed by a space of 2 * ShapePath.strokeWidth pixels.

See also QPen::setDashPattern().

fillColor : color

This property holds the fill color.

When set to transparent, no filling occurs.

The default value is white.

fillGradient : ShapeGradient

This property defines the fill gradient. 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 ShapePath.fillColor.

When set, ShapePath.fillColor is ignored and filling is done using one of the ShapeGradient subtypes.

Note: The Gradient type cannot be used here. Rather, prefer using one of the advanced subtypes, like LinearGradient.

fillRule : enumeration

This property holds the fill rule. The default value is ShapePath.OddEvenFill. For an example on fill rules, see QPainterPath::setFillRule().

joinStyle : enumeration

This property defines how joins between two connected lines are drawn. The default value is ShapePath.BevelJoin.

  • 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.
  • ShapePath.RoundJoin - A circular arc between the two lines is filled.

miterLimit : int

When ShapePath.joinStyle is set to ShapePath.MiterJoin, this property specifies how far the miter join can extend from the join point.

The default value is 2.

strokeColor : color

This property holds the stroking color.

When set to transparent, no stroking occurs.

The default value is white.

strokeStyle : enumeration

This property defines the style of stroking. The default value is ShapePath.SolidLine.

  • ShapePath.SolidLine - A plain line.
  • ShapePath.DashLine - Dashes separated by a few pixels.

strokeWidth : color

This property holds the stroke width.

When set to a negative value, no stroking occurs.

The default value is 1.

© 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.