Shapes in Diagram Control

15 Oct 202324 minutes to read

Diagram provides support to add different kind of nodes. They are as follows:

  • Text node
  • Image node
  • HTML node
  • Native node
  • Basic shapes
  • Flow shapes

Text

Texts can be added to the diagram as text nodes. The shape property of the node allows to set the type of node and for text nodes, it should be set as text. In addition, define the content object that is used to define the text to be added and style is used to customize the appearance of that text.

<ejs-diagram id="container" width="100%" height="700px" nodes="ViewBag.nodes">
</ejs-diagram>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Syncfusion.EJ2.Diagrams;
using System.Drawing;

namespace EJ2MVCSampleBrowser.Controllers.Diagram {
    public partial class DiagramController: Controller {
        // GET: Nodes
        public ActionResult Nodes() {
            List < DiagramNode > nodes = new List < DiagramNode > ();
            nodes.Add(new DiagramNode() {
                Id = "node1",
                    Width = 100,
                    Height = 100,
                    OffsetX = 100,
                    OffsetY = 100,
                    Shape = new { type = "Text", content= "Text" },
                    Style = new { color = "White", strokeColor = "None"}
            });
            ViewBag.nodes = nodes;


            return View();
        }
    }
}

Image

Diagram allows to add images as image nodes. The shape property of node allows you to set the type of node and for image nodes, it should be set as image. In addition, the source property of shape enables you to set the image source.

<ejs-diagram id="container" width="100%" height="700px" nodes="ViewBag.nodes">
</ejs-diagram>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Syncfusion.EJ2.Diagrams;
using System.Drawing;

namespace EJ2MVCSampleBrowser.Controllers.Diagram {
    public partial class DiagramController: Controller {
        // GET: Nodes
        public ActionResult Nodes() {
            List < DiagramNode > nodes = new List < DiagramNode > ();
            nodes.Add(new DiagramNode() {
                Id = "node1",
                    Width = 100,
                    Height = 100,
                    OffsetX = 100,
                    OffsetY = 100,
                    Shape = new { type = "Image", source="/diagram/images/syncfusion.png" },
                    Style = new NodeStyleNodes() {  Fill="None"}
            });
            ViewBag.nodes = nodes;


            return View();
        }
    }
}

Base64 Encoded Image Into The Image Node:

<ejs-diagram id="container" width="100%" height="700px" nodes="ViewBag.nodes">
</ejs-diagram>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Syncfusion.EJ2.Diagrams;
using System.Drawing;

namespace EJ2MVCSampleBrowser.Controllers.Diagram {
    public partial class DiagramController: Controller {
        // GET: Nodes
        public ActionResult Nodes() {
            List < DiagramNode > nodes = new List < DiagramNode > ();
            nodes.Add(new DiagramNode() {
                Id = "node1",
                    Width = 100,
                    Height = 100,
                    OffsetX = 100,
                    OffsetY = 100,
                    Shape = new { type = "Image", source="data:image/gif;base64,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" },
                    Style = new NodeStyleNodes() {  Fill="None"}
            });
            ViewBag.nodes = nodes;


            return View();
        }
    }
}

NOTE

Deploy your HTML file in the web application and export the diagram (image node) or else the image node will not be exported in the Chrome and Firefox due to security issues.

Link 1: Draw images on canvas locally using chrome

Link 2: Local image in canvas in chrome

Image alignment

Stretch and align the image content anywhere but within the node boundary.

The scale property of the node allows to stretch the image as you desired (either to maintain proportion or to stretch). By default, the scale property of the node is set as meet.

<ejs-diagram id="container" width="100%" height="700px" nodes="ViewBag.nodes">
</ejs-diagram>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Syncfusion.EJ2.Diagrams;
using System.Drawing;

namespace EJ2MVCSampleBrowser.Controllers.Diagram {
    public partial class DiagramController: Controller {
        // GET: Nodes
        public ActionResult Nodes() {
            List < DiagramNode > nodes = new List < DiagramNode > ();
            nodes.Add(new DiagramNode() {
                Id = "node1",
                    Width = 100,
                    Height = 100,
                    OffsetX = 100,
                    OffsetY = 100,
                    Shape = new { type = "Image", source="/diagram/images/syncfusion.png", scale="Meet" },
                    Style = new NodeStyleNodes() {  Fill="None"}
            });
            ViewBag.nodes = nodes;


            return View();
        }
    }
}
Values Images
None None Alignment
Meet Meet Alignment
Slice Slice Alignment
Stretch Stretch Alignment

HTML

Html elements can be embedded in the diagram through Html type node. The shape property of node allows to set the type of node and to create a HTML node it should be set as HTML.

<ejs-diagram id="container" width="100%" height="700px" nodes="ViewBag.nodes">
</ejs-diagram>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Syncfusion.EJ2.Diagrams;
using System.Drawing;

namespace EJ2MVCSampleBrowser.Controllers.Diagram {
    public partial class DiagramController: Controller {
        // GET: Nodes
        public ActionResult Nodes() {
            List < DiagramNode > nodes = new List < DiagramNode > ();
            nodes.Add(new DiagramNode() {
                Id = "node1",
                    Width = 100,
                    Height = 100,
                    OffsetX = 100,
                    OffsetY = 100,
                    Shape = new { type = "HTML", content= "<div style='background:#6BA5D7;height:100%;width:100%;'><button type='button' style='width:100px'> Button</button></div>" },
            });
            ViewBag.nodes = nodes;


            return View();
        }
    }
}

NOTE

HTML node cannot be exported to image format, like JPEG, PNG, and BMP. It is by design, while exporting the diagram is drawn in a canvas. Further, this canvas is exported into image formats. Currently, drawing in a canvas equivalent from all possible HTML is not feasible. Hence, this limitation.

HTML Node With Template

Html elements can be embedded in the diagram using Html type node. The shape property of the node allows to set the type of node.

<ejs-diagram id="container" width="100%" height="700px" nodes="ViewBag.nodes">
</ejs-diagram>
<div class="text-center">
    @(Html.EJS().Diagram("diagram").Width("100%").Height("700px").NodeTemplate("#nodetemplate").Nodes(ViewBag.nodes).Render())
</div>
<script id="nodetemplate" type="text/x-template">
    <input type="button" id="button" value="${id}">
</script>

Native

Diagram provides support to embed SVG element into a node. The shape property of node allows to set the type of node. To create a native node, it should be set as native.

<ejs-diagram id="container" width="100%" height="700px" nodes="ViewBag.nodes">
</ejs-diagram>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Syncfusion.EJ2.Diagrams;
using System.Drawing;

namespace EJ2MVCSampleBrowser.Controllers.Diagram {
        public partial class DiagramController: Controller {
            // GET: Nodes
            public ActionResult Nodes() {
                List < DiagramNode > nodes = new List < DiagramNode > ();
                nodes.Add(new DiagramNode() {
                        Id = "node1",
                            Width = 100,
                            Height = 100,
                            OffsetX = 100,
                            OffsetY = 100,
                            Shape = new {
                                type = "Native",
                                content = "<g xmlns=' http: //www.w3.org/2000/svg'> <g transform='translate(1 1)'><g>	   <path style='fill:#61443C;' d='M61.979,435.057c2.645-0.512,5.291-0.853,7.936-1.109c-2.01,1.33-4.472,             1.791-6.827,1.28 C62.726,435.13,62.354,435.072,61.979,435.057z'/><path style='fill:#61443C;'d='M502.469,502.471h-25.6c0.163-30.757-20.173-57.861-49.749-66.304 c-5.784-1.581-11.753-2.385-17.749-2.389c-2.425-0.028-4.849,0.114-7.253,0.427c1.831-7.63,2.747-15.45,2.731-23.296 c0.377-47.729-34.52-88.418-81.749-95.317c4.274-0.545,8.577-0.83,12.885-0.853c25.285,0.211,49.448,10.466,67.167,28.504 c17.719,18.039,27.539,42.382,27.297,67.666c0.017,7.846-0.9,15.666-2.731,23.296c2.405-0.312,4.829-0.455,7.253-0.427     C472.572,434.123,502.783,464.869,502.469,502.471z'/>		</g>	<path style='fill:#8B685A;' d='M476.869,502.471H7.536c-0.191-32.558,22.574-60.747,54.443-67.413    c0.375,0.015,0.747,0.072,1.109,0.171c2.355,0.511,4.817,0.05,6.827-1.28c1.707-0.085,3.413-0.171,5.12-0.171    c4.59,0,9.166,0.486,13.653,1.451c2.324,0.559,4.775,0.147,6.787-1.141c2.013-1.288,3.414-3.341,3.879-5.685    c7.68-39.706,39.605-70.228,79.616-76.117c4.325-0.616,8.687-0.929,13.056-0.939c13.281-0.016,26.409,2.837,38.485,8.363    c3.917,1.823,7.708,3.904,11.349,6.229c2.039,1.304,4.527,1.705,6.872,1.106c2.345-0.598,4.337-2.142,5.502-4.264    c14.373-25.502,39.733-42.923,68.693-47.189h0.171c47.229,6.899,82.127,47.588,81.749,95.317c0.017,7.846-0.9,15.666-2.731,23.296    c2.405-0.312,4.829-0.455,7.253-0.427c5.996,0.005,11.965,0.808,17.749,2.389C456.696,444.61,477.033,471.713,476.869,502.471    L476.869,502.471z'/>		<path style='fill:#66993E;' d='M502.469,7.537c0,0-6.997,264.96-192.512,252.245c-20.217-1.549-40.166-5.59-59.392-12.032    c-1.365-0.341-2.731-0.853-4.096-1.28c0,0-0.597-2.219-1.451-6.144c-6.656-34.048-25.088-198.997,231.765-230.144    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c2.965,0.785,6.122-0.082,8.271-2.27l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012    C241.604,425.915,236.243,425.89,232.903,429.171L232.903,429.171z'/>		<path d='M384.003,409.604c2.264,0.003,4.435-0.897,6.033-2.5l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012    c-3.311-3.311-8.671-3.335-12.012-0.054l-8.533,8.533c-2.44,2.44-3.169,6.11-1.849,9.298    C377.441,407.524,380.552,409.603,384.003,409.604z'/>		<path d='M70.77,463.304l-8.533,8.533c-2.188,2.149-3.055,5.307-2.27,8.271s3.1,5.28,6.065,6.065    c2.965,0.785,6.122-0.082,8.271-2.27l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012    C79.47,460.048,74.11,460.024,70.77,463.304L70.77,463.304z'/>		<path d='M121.97,446.238l-8.533,8.533c-2.188,2.149-3.055,5.307-2.27,8.271c0.785,2.965,3.1,5.28,6.065,6.065    c2.965,0.785,6.122-0.082,8.271-2.27l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012    C130.67,442.981,125.31,442.957,121.97,446.238L121.97,446.238z'/>		<path d='M202.302,420.638c-1.6-1.601-3.77-2.5-6.033-2.5c-2.263,0-4.433,0.899-6.033,2.5l-8.533,8.533    c-2.178,2.151-3.037,5.304-2.251,8.262c0.786,2.958,3.097,5.269,6.055,6.055c2.958,0.786,6.111-0.073,8.262-2.251l8.533-8.533    c1.601-1.6,2.5-3.77,2.5-6.033C204.802,424.408,203.903,422.237,202.302,420.638L202.302,420.638z'/>		<path d='M210.836,463.304c-3.341-3.281-8.701-3.256-12.012,0.054c-3.311,3.311-3.335,8.671-0.054,12.012l8.533,8.533    c2.149,2.188,5.307,3.055,8.271,2.27c2.965-0.785,5.28-3.1,6.065-6.065c0.785-2.965-0.082-6.122-2.27-8.271L210.836,463.304z'/>		<path d='M343.836,454.771l-8.533,8.533c-2.188,2.149-3.055,5.307-2.27,8.271c0.785,2.965,3.1,5.28,6.065,6.065    c2.965,0.785,6.122-0.082,8.271-2.27l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012    C352.537,451.515,347.177,451.49,343.836,454.771L343.836,454.771z'/>		<path d='M429.17,483.904c3.341,3.281,8.701,3.256,12.012-0.054s3.335-8.671,0.054-12.012l-8.533-8.533    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                            }); ViewBag.nodes = nodes;


                    return View();
                }
            }
        }

NOTE

Like HTML node, the native node also cannot be exported to image format. Fill color of native node can be overridden by the inline style or fill of the SVG element specified in the template.

SVG content alignment

Stretch and align the svg content anywhere but within the node boundary.

The scale property of the node allows to stretch the svg content as you desired (either to maintain proportion or to stretch). By default, the scale property of node is set as meet.

The following tables illustrates all the possible scale options for the node.

Values Images
None None SVG Content Alignment
Meet Meet SVG Content Alignment
Slice Slice SVG Content Alignment
Stretch Stretch SVG Content Alignment

Basic shapes

  • The Basic shapes are common shapes that are used to represent the geometrical information visually. To create basic shapes, the type of the shape should be set as basic. Its shape property can be set with any one of the built-in shape.

  • To render a rounded rectangle, you need to set the type as basic and shape as rectangle. Set the cornerRadius property to specify the radius of rounded rectangle.

<ejs-diagram id="container" width="100%" height="700px" nodes="ViewBag.nodes">
</ejs-diagram>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Syncfusion.EJ2.Diagrams;
using System.Drawing;

namespace EJ2MVCSampleBrowser.Controllers.Diagram {
    public partial class DiagramController: Controller {
        // GET: Nodes
        public ActionResult Nodes() {
            List < DiagramNode > nodes = new List < DiagramNode > ();
            nodes.Add(new DiagramNode() {
                Id = "node1",
                    Width = 100,
                    Height = 100,
                    OffsetX = 100,
                    OffsetY = 100,
                    Shape = new { type = "Basic", shape = "Rectangle", cornerRadius = 10 },
            });
            ViewBag.nodes = nodes;


            return View();
        }
    }
}

NOTE

By default, the shape property of the node is set as basic.

Default property for shape is Rectangle.

NOTE

When the shape is not set for a basic shape, it is considered as a rectangle.

The list of basic shapes are as follows.

BasicShapes

Path

The Path node is a commonly used basic shape that allows visually to represent the geometrical information. To create a path node, specify the shape as path. The path property of node allows you to define the path to be drawn.

<ejs-diagram id="container" width="100%" height="700px" nodes="ViewBag.nodes">
</ejs-diagram>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Syncfusion.EJ2.Diagrams;
using System.Drawing;

namespace EJ2MVCSampleBrowser.Controllers.Diagram {
    public partial class DiagramController: Controller {
        // GET: Nodes
        public ActionResult Nodes() {
            List < DiagramNode > nodes = new List < DiagramNode > ();
            nodes.Add(new DiagramNode() {
                Id = "node1",
                    Width = 100,
                    Height = 100,
                    OffsetX = 100,
                    OffsetY = 100,
                    Shape = new { type = "Path", data = "M35.2441,25 L22.7161,49.9937 L22.7161,0.00657536 L35.2441,25 z M22.7167,25 L-0.00131226,25 M35.2441,49.6337 L35.2441,0.368951 M35.2441,25 L49.9981,25"
                    },
            });
            ViewBag.nodes = nodes;


            return View();
        }
    }
}

Flow Shapes

The flow shapes are used to represent the process flow. It is used for analyzing, designing, and managing for documentation process. To create a flow shape, specify the shape type as flow. Flow shapes and by default, it is considered as process.

<ejs-diagram id="container" width="100%" height="700px" nodes="ViewBag.nodes">
</ejs-diagram>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Syncfusion.EJ2.Diagrams;
using System.Drawing;

namespace EJ2MVCSampleBrowser.Controllers.Diagram {
    public partial class DiagramController: Controller {
        // GET: Nodes
        public ActionResult Nodes() {
            List < DiagramNode > nodes = new List < DiagramNode > ();
            nodes.Add(new DiagramNode() {
                Id = "node1",
                    Width = 100,
                    Height = 100,
                    OffsetX = 100,
                    OffsetY = 100,
                    Shape = new { type = "Flow", shape = "DirectData" },
            });
            ViewBag.nodes = nodes;


            return View();
        }
    }
}

FlowShapes