DiagramShape.Parameters Property

Specifies shape parameters.

Namespace: DevExpress.XtraDiagram

Assembly: DevExpress.XtraDiagram.v20.1.dll

Declaration

[DefaultValue(null)]
[Browsable(false)]
public virtual DiagramDoubleCollection Parameters { get; set; }
<DefaultValue(Nothing)>
<Browsable(False)>
Public Overridable Property Parameters As DiagramDoubleCollection

Property Value

Type Default Description
DevExpress.Diagram.Core.DiagramDoubleCollection

null

A System.Windows.Media.DoubleCollection object that represents shape parameters.

Remarks

The parameters are used to dynamically calculate an end point, row height and other properties.

Examples

This example demonstrates how to describe custom shapes using the XAML markup instead of XML.

NOTE

The PresentationCore library used in this example affects the DPI awareness of WinForms applications (see T346466 - DiagramControl disables DPI scaling for the entire application). Use this approach only if your application is not DPI aware or the PresentationCore library is pre-loaded in the Program.Main method as follows:


static void RegisterPackUriScheme() {
    new FlowDocument();
}

In other cases, it is preferred to describe shapes using XML, as demonstrated in the following example: How to: Create Custom Shapes with Connection Points.

<p:ResourceDictionary xmlns:p="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns="http://schemas.devexpress.com/winfx/2008/xaml/diagram"
                    xmlns:local="clr-namespace:XtraDiagram.CreateCustomShapes">

    <ShapeTemplate x:Key="{local:ShapeKey Shape1}" DefaultSize="50, 100" >
        <Start X="0" Y="0"/>
        <Line X="1" Y="0" />
        <Line X="0.8" Y="0.8" />
        <Line X="0" Y="1" />
        <ShapeTemplate.ConnectionPoints>
            <ShapePoint X="0" Y="0" />
            <ShapePoint X="0.5" Y="0" />
            <ShapePoint X="1" Y="0" />
            <ShapePoint X="0.8" Y="0.8" />
            <ShapePoint X="0" Y="1" />
            <ShapePoint X="0" Y="0.5" />
        </ShapeTemplate.ConnectionPoints>
    </ShapeTemplate>

    <!--W - shape width-->
    <!--H - shape height-->
    <ShapeTemplate x:Key="{local:ShapeKey Shape2}" DefaultSize="60, 120">
        <Start X="0" Y="0" FillColor="Brown"/>
        <Arc X="1" Y="0" Size="CreateSize(W/2, H/10)" Direction="Counterclockwise" />
        <Arc X="1" Y="1" Size="CreateSize(W/10, H/2)" Direction="Counterclockwise" />
        <Arc X="0" Y="1" Size="CreateSize(W/2, H/10)" Direction="Counterclockwise" />
        <Arc X="0" Y="0" Size="CreateSize(W/10, H/2)" Direction="Counterclockwise" />
        <ShapeTemplate.ConnectionPoints>
            <ShapePoint X="0" Y="0" />
            <ShapePoint X="1" Y="0" />
            <ShapePoint X="0" Y="1" />
        </ShapeTemplate.ConnectionPoints>
    </ShapeTemplate>

    <!--P0 - parameter 0-->
    <!--P in Point definition - parameter value -->
    <!--P in Value definition - parameter point-->
    <ShapeTemplate x:Key="{local:ShapeKey Shape3}" DefaultSize="60, 120">
        <Start X="0" Y="0" FillColor="Brown"/>
        <Arc X="1" Y="0" Size="CreateSize(W/2, P0 * H)" Direction="Counterclockwise" />
        <Line X="1" Y="1"/>
        <Line X="0" Y="1"/>
        <Line X="0" Y="0"/>
        <ShapeTemplate.ConnectionPoints>
            <ShapePoint X="0" Y="0" />
            <ShapePoint X="1" Y="0" />
            <ShapePoint X="0" Y="1" />
        </ShapeTemplate.ConnectionPoints>
        <ShapeTemplate.Parameters>
            <Parameter DefaultValue="0.1" 
                       Point="CreatePoint(W / 2, P * H)" 
                       Value="P.Y / H" 
                       Min="0" Max="1" />
        </ShapeTemplate.Parameters>
    </ShapeTemplate>

    <!--this shape contains two rows-->
    <ShapeTemplate x:Key="{local:ShapeKey Shape4}" DefaultSize="60, 120" Rows="H*P0;H*(1-P0)" IsQuick="True">
        <Start X="0" Y="0" FillColor="Green"/>
        <Line X="1" Y="0"/>
        <Line X="1" Y="1"/>
        <Line X="0" Y="1"/>
        <Start X="0" Y="1" FillColor="Red"/>
        <Line X="1" Y="1"/>
        <Line X="1" Y="2"/>
        <Line X="0" Y="2"/>
        <ShapeTemplate.ConnectionPoints>
            <ShapePoint X="0.5" Y="0" />
            <ShapePoint X="1" Y="1" />
            <ShapePoint X="0.5" Y="2" />
            <ShapePoint X="0" Y="1" />
        </ShapeTemplate.ConnectionPoints>
        <ShapeTemplate.Parameters>
            <Parameter DefaultValue="0.5" 
                       Point="CreatePoint(W, P * H)" 
                       Value="P.Y / H" 
                       Min="0" Max="1" />
        </ShapeTemplate.Parameters>
    </ShapeTemplate>

</p:ResourceDictionary>

Implements

DevExpress.Diagram.Core.IDiagramShape.Parameters
See Also