Page Settings

Page settings enable to customize the appearance, width, and height of the Diagram page.

Page size and appearance

To explore those properties, refer Page Settings.

You can also customize the appearance of off-page regions with the property backgroundColor.

NOTE

When the pageWidth and pageHeight are not specified, the rectangular region that completely fits all nodes and connectors are considered as page size.

BackgroundImage

You can stretch and align the background image anywhere over the diagram area.
The source property of backgroundImage allows you to set the path of the image. The scale and the alignalign properties help to stretch/align the background images.

To explore the backgroundImage properties, refer Background Image.

The following code illustrates how to stretch and align the background image.

  • javascript
  • $("#diagram").ejDiagram({
    	//Sets off-page background
    	backgroundColor: "whitesmoke",
        backgroundImage: {alignment:ej.datavisualization.Diagram.ImageAlignment.XMidYMin, scale:ej.datavisualization.Diagram.scaleConstraints.Meet, source:"airplane.png"},
    	pageSettings: {
    		//Sets page size
    		pageHeight: 500,
    		pageWidth: 500,
    		//Customizes the appearance of page
    		pageBorderWidth: 4,
    		pageBackgroundColor: "white",
    		pageBorderColor: "lightgray",
    		pageMargin: 25,
    		showPageBreak: true,
    		multiplePage: true,
    		pageOrientation: ej.datavisualization.Diagram.PageOrientations.Portrait
    	}
    });

    MultiplePage and PageBreaks

    When MultiplePage is enabled, size of the page dynamically increases or decreases in multiples of page width and height and completely fits diagram within the page boundaries. Page Breaks is used as a visual guide to see how pages are split into multiple pages.

    multiplePage and showPageBreak properties of page settings allow you to enable/disable multiple pages and page breaks respectively.
    The following code illustrates how to enable multiple page and page break lines.

  • javascript
  • $("#diagram").ejDiagram({
    	pageSettings: {
    		//Enables the multiple page
    		multiplePage: true,
    		//Enables the page break lines
    		showPageBreak: true,
    	}
    });

    Boundary Constraints

    Diagram provides support to restrict/customize the interactive region, out of which the elements cannot be dragged, resized or rotated.
    boundaryConstraints property of page settings allows you to customize the interactive region. To explore the boundary constraints, refer refer Boundary Constraints.

    The following code example illustrates how to define boundaryConstraints.

  • js
  • //set page setting properties
        $("#Diagram").ejDiagram({
            //sets the boundaryConstraints  
            pageSettings: {
    		    //Allows to drag within the diagram content
                boundaryConstraints: ej.datavisualization.Diagram.BoundaryConstraints.Diagram; 
            }
        });