Ruler

4 Apr 20222 minutes to read

The Ruler provides a horizontal and vertical guide for measuring in the Diagram control. The Ruler can be used to measure the diagram objects, indicate positions, and align diagram elements. This is especially useful in creating scale models.

Adding Rulers to the Diagram

  • The rulerSettings property is used to control the visibility and appearance of the ruler in the diagram.

  • The RulerSettings showRulers property is used to show or hide the rulers in the diagram.

  • The RulerSettings horizontalRuler and verticalRuler properties are used to customize the rulers appearance in the diagram.

<ejs-diagram id="diagram" width="100%" height="600px">
    <e-diagram-rulersettings showRulers="true">
    </e-diagram-rulersettings>
</ejs-diagram>

Ruler

Customizing the Ruler

By default, the ruler segments are arranged based on pixel values.

  • The HorizontalRuler’s interval property allows to define the interval between ruler segments and the segmentWidth property allows to define the segment width of the ruler. Similarly, you can use the VerticalRuler’s interval and segmentWidth properties are used to define the interval and segment width of the vertical ruler.

  • The HorizontalRuler’s tickAlignment property is used to align the ruler tick either left or right side of the ruler. The VerticalRuler’s tickAlignment property is used to align the ruler tick either top or bottom side of the ruler.

  • The HorizontalRuler’s arrangeTick and VerticalRuler’s arrangeTick function is provided for the purpose of customizing the appearance of ruler ticks. It will be called for each tick rendering.

  • The HorizontalRuler’s markerColor and VerticalRuler’s markerColor properties are used to define the ruler marker color and marker will be shown when performing the interaction in the diagram.

<ejs-diagram id="diagram" width="100%" height="600px">
    <e-diagram-rulersettings showRulers="true">
        <e-rulersettings-horizontalruler interval="8" segmentWidth="100" thickness="25" tickAlignment="LeftOrTop"></e-rulersettings-horizontalruler>
        <e-rulersettings-verticalruler interval="10" segmentWidth="150" thickness="35" tickAlignment="RightOrBottom"></e-rulersettings-verticalruler>
    </e-diagram-rulersettings>
</ejs-diagram>

Note : The MarkerColor property can be customized using the Marker CSS style.

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