Diagram - Background Images

The Diagram component provides a collection of built-in shapes. You can extend this collection with custom shapes.

An array of custom shape objects is accessible through the CustomShapes method. For each custom shape object, you can specify the type, background image, default size, text, connection points, and other settings. Note that shape images should be supplied as SVG files.

This demo shows how to populate the shape collection with custom shape types, and how to use custom shapes in the Diagram.

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Backend API

@(Html.DevExtreme().Diagram() .ID("diagram") .CustomShapes(cs => { cs.Add() .Category("hardware") .Type("internet") .Title("Internet") .BackgroundImageUrl(Url.Content("~/images/shapes/internet.svg")) .BackgroundImageLeft(0.15) .BackgroundImageTop(0) .BackgroundImageWidth(0.7) .BackgroundImageHeight(0.7) .DefaultWidth(0.75) .DefaultHeight(0.75) .DefaultText("Internet") .AllowEditText(true) .TextLeft(0) .TextTop(0.7) .TextWidth(1) .TextHeight(0.3) .ConnectionPoints(cp => { cp.Add().X(0.5).Y(0); cp.Add().X(0.9).Y(0.5); cp.Add().X(0.5).Y(1); cp.Add().X(0.1).Y(0.5); }); cs.Add() .Category("hardware") .Type("laptop") .Title("Laptop") .BackgroundImageUrl(Url.Content("~/images/shapes/laptop.svg")) .BackgroundImageLeft(0.15) .BackgroundImageTop(0) .BackgroundImageWidth(0.7) .BackgroundImageHeight(0.7) .DefaultWidth(0.75) .DefaultHeight(0.75) .DefaultText("Laptop") .AllowEditText(true) .TextLeft(0) .TextTop(0.7) .TextWidth(1) .TextHeight(0.3) .ConnectionPoints(cp => { cp.Add().X(0.5).Y(0); cp.Add().X(0.9).Y(0.5); cp.Add().X(0.5).Y(1); cp.Add().X(0.1).Y(0.5); }); cs.Add() .Category("hardware") .Type("mobile") .Title("Mobile") .BackgroundImageUrl(Url.Content("~/images/shapes/mobile.svg")) .BackgroundImageLeft(0.15) .BackgroundImageTop(0) .BackgroundImageWidth(0.7) .BackgroundImageHeight(0.7) .DefaultWidth(0.75) .DefaultHeight(0.75) .DefaultText("Mobile") .AllowEditText(true) .TextLeft(0) .TextTop(0.7) .TextWidth(1) .TextHeight(0.3) .ConnectionPoints(cp => { cp.Add().X(0.5).Y(0); cp.Add().X(0.9).Y(0.5); cp.Add().X(0.5).Y(1); cp.Add().X(0.1).Y(0.5); }); cs.Add() .Category("hardware") .Type("pc") .Title("PC") .BackgroundImageUrl(Url.Content("~/images/shapes/pc.svg")) .BackgroundImageLeft(0.15) .BackgroundImageTop(0) .BackgroundImageWidth(0.7) .BackgroundImageHeight(0.7) .DefaultWidth(0.75) .DefaultHeight(0.75) .DefaultText("PC") .AllowEditText(true) .TextLeft(0) .TextTop(0.7) .TextWidth(1) .TextHeight(0.3) .ConnectionPoints(cp => { cp.Add().X(0.5).Y(0); cp.Add().X(0.9).Y(0.5); cp.Add().X(0.5).Y(1); cp.Add().X(0.1).Y(0.5); }); cs.Add() .Category("hardware") .Type("phone") .Title("Phone") .BackgroundImageUrl(Url.Content("~/images/shapes/phone.svg")) .BackgroundImageLeft(0.15) .BackgroundImageTop(0) .BackgroundImageWidth(0.7) .BackgroundImageHeight(0.7) .DefaultWidth(0.75) .DefaultHeight(0.75) .DefaultText("Phone") .AllowEditText(true) .TextLeft(0) .TextTop(0.7) .TextWidth(1) .TextHeight(0.3) .ConnectionPoints(cp => { cp.Add().X(0.5).Y(0); cp.Add().X(0.9).Y(0.5); cp.Add().X(0.5).Y(1); cp.Add().X(0.1).Y(0.5); }); cs.Add() .Category("hardware") .Type("printer") .Title("Printer") .BackgroundImageUrl(Url.Content("~/images/shapes/printer.svg")) .BackgroundImageLeft(0.15) .BackgroundImageTop(0) .BackgroundImageWidth(0.7) .BackgroundImageHeight(0.7) .DefaultWidth(0.75) .DefaultHeight(0.75) .DefaultText("Printer") .AllowEditText(true) .TextLeft(0) .TextTop(0.7) .TextWidth(1) .TextHeight(0.3) .ConnectionPoints(cp => { cp.Add().X(0.5).Y(0); cp.Add().X(0.9).Y(0.5); cp.Add().X(0.5).Y(1); cp.Add().X(0.1).Y(0.5); }); cs.Add() .Category("hardware") .Type("router") .Title("Router") .BackgroundImageUrl(Url.Content("~/images/shapes/router.svg")) .BackgroundImageLeft(0.15) .BackgroundImageTop(0) .BackgroundImageWidth(0.7) .BackgroundImageHeight(0.7) .DefaultWidth(0.75) .DefaultHeight(0.75) .DefaultText("Router") .AllowEditText(true) .TextLeft(0) .TextTop(0.7) .TextWidth(1) .TextHeight(0.3); cs.Add() .Category("hardware") .Type("scaner") .Title("Scaner") .BackgroundImageUrl(Url.Content("~/images/shapes/scaner.svg")) .BackgroundImageLeft(0.15) .BackgroundImageTop(0) .BackgroundImageWidth(0.7) .BackgroundImageHeight(0.7) .DefaultWidth(0.75) .DefaultHeight(0.75) .DefaultText("Scaner") .AllowEditText(true) .TextLeft(0) .TextTop(0.7) .TextWidth(1) .TextHeight(0.3) .ConnectionPoints(cp => { cp.Add().X(0.5).Y(0); cp.Add().X(0.9).Y(0.5); cp.Add().X(0.5).Y(1); cp.Add().X(0.1).Y(0.5); }); cs.Add() .Category("hardware") .Type("server") .Title("Server") .BackgroundImageUrl(Url.Content("~/images/shapes/server.svg")) .BackgroundImageLeft(0.15) .BackgroundImageTop(0) .BackgroundImageWidth(0.7) .BackgroundImageHeight(0.7) .DefaultWidth(0.75) .DefaultHeight(0.75) .DefaultText("Server") .AllowEditText(true) .TextLeft(0) .TextTop(0.7) .TextWidth(1) .TextHeight(0.3) .ConnectionPoints(cp => { cp.Add().X(0.5).Y(0); cp.Add().X(0.9).Y(0.5); cp.Add().X(0.5).Y(1); cp.Add().X(0.1).Y(0.5); }); cs.Add() .Category("hardware") .Type("switch") .Title("Switch") .BackgroundImageUrl(Url.Content("~/images/shapes/switch.svg")) .BackgroundImageLeft(0.15) .BackgroundImageTop(0) .BackgroundImageWidth(0.7) .BackgroundImageHeight(0.7) .DefaultWidth(0.75) .DefaultHeight(0.75) .DefaultText("Switch") .AllowEditText(true) .TextLeft(0) .TextTop(0.7) .TextWidth(1) .TextHeight(0.3) .ConnectionPoints(cp => { cp.Add().X(0.5).Y(0); cp.Add().X(0.9).Y(0.5); cp.Add().X(0.5).Y(1); cp.Add().X(0.1).Y(0.5); }); cs.Add() .Category("hardware") .Type("wifi") .Title("Wi Fi Router") .BackgroundImageUrl(Url.Content("~/images/shapes/wifi.svg")) .BackgroundImageLeft(0.15) .BackgroundImageTop(0) .BackgroundImageWidth(0.7) .BackgroundImageHeight(0.7) .DefaultWidth(0.75) .DefaultHeight(0.75) .DefaultText("Wi Fi") .AllowEditText(true) .TextLeft(0) .TextTop(0.7) .TextWidth(1) .TextHeight(0.3) .ConnectionPoints(cp => { cp.Add().X(0.5).Y(0); cp.Add().X(0.9).Y(0.5); cp.Add().X(0.5).Y(1); cp.Add().X(0.1).Y(0.5); }); }) .Toolbox(tb => tb .Groups(g => g.Add().Category("hardware").Title("Hardware")) ) ) <script type="text/javascript"> $(function () { $.ajax({ url: "@Url.Content("~/SampleData/diagram-hardware.json")", dataType: "text", success: function(data) { $("#diagram").dxDiagram("instance").import(data); } }); }); </script>

using DevExtreme.NETCore.Demos.Models.SampleData; using Microsoft.AspNetCore.Mvc; namespace DevExtreme.NETCore.Demos.Controllers { public class DiagramController : Controller { public IActionResult CustomShapesWithIcons() { return View(); } } }

#diagram { height: 900px; }