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Page Settings in Angular Diagram component

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

Page size and appearance

  • The size and appearance of the diagram pages can be customized with the page settings property.
  • The width and height properties of page settings define the size of the page and based on the size, the orientation will be set for the page. In addition to that, the appearance of the page can be customized with source and set of appearance specific properties.
  • The color property is used to customize the background color and border color of the page.
  • The margin property is used to define the page margin.
  • To explore those properties, refer to Page Settings.
Source
Preview
app.component.ts
app.module.ts
main.ts
import { Component, ViewEncapsulation, OnInit, ViewChild } from '@angular/core';
import { DiagramComponent, Diagram, NodeModel, ConnectorModel, PageSettingsModel } from '@syncfusion/ej2-angular-diagrams';

@Component({
    selector: "app-container",
    template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px" [getNodeDefaults] ='getNodeDefaults' [getConnectorDefaults]='getConnectorDefaults' [pageSettings]="pageSettings">
        <e-nodes>
            <e-node id='node1' [offsetX]=150 [offsetY]=150>
                <e-node-annotations>
                    <e-node-annotation id="label1" content="Rectangle1" [horizontalAlignment]="horizontalAlignment">
                    </e-node-annotation>
                </e-node-annotations>
            </e-node>
            <e-node id='node2' [offsetX]=350 [offsetY]=150>
                <e-node-annotations>
                    <e-node-annotation id="label1" content="Rectangle2" [horizontalAlignment]="horizontalAlignment">
                    </e-node-annotation>
                </e-node-annotations>
            </e-node>
        </e-nodes>
        <e-connectors>
            <e-connector id='connector' type='Orthogonal' [sourceID]='node1' [targetID]='node2'>
            </e-connector>
        </e-connectors>
    </ejs-diagram>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent {
    @ViewChild("diagram")
    public diagram: DiagramComponent;
    public pageSettings: PageSettingsModel;
    ngOnInit(): void {
        // Defines the pageSettings for the diagram
        this.pageSettings = {
            // Sets the PageOrientation for the diagram to page
            orientation: 'Landscape',
            // Sets the Page Break for diagram
            showPageBreaks: true,
            // Defines the background color and image  of diagram
            background: {
                color: 'grey'
            },
            // Sets the width for the Page
            width: 300,
            // Sets the height for the Page
            height: 300,
            // Sets the space to be left between an annotation and its parent node/connector
            margin: {
                left: 10,
                top: 10,
                bottom: 10
            },
        }
    }
    public getNodeDefaults(node: NodeModel): NodeModel {
        node.height = 100;
        node.width = 100;
        node.style.fill = "#6BA5D7";
        node.style.strokeColor = "White";
        return node;
    }
    public getConnectorDefaults(obj: ConnectorModel): ConnectorModel {
        obj.style = {
            strokeColor: '#6BA5D7',
            fill: '#6BA5D7',
            strokeWidth: 2
        }
        obj.targetDecorator = {
            style: {
                fill: '#6BA5D7',
                strokeColor: '#6BA5D7'
            }
        }
    }
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { DiagramModule } from '@syncfusion/ej2-angular-diagrams';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, DiagramModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [ ]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

Set background image

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

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

Source
Preview
app.component.ts
app.module.ts
main.ts
import { Component, ViewEncapsulation, OnInit, ViewChild } from '@angular/core';
import { DiagramComponent, Diagram, NodeModel, ConnectorModel, PageSettingsModel } from '@syncfusion/ej2-angular-diagrams';

@Component({
    selector: "app-container",
    template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px" [getNodeDefaults] ='getNodeDefaults' [getConnectorDefaults]='getConnectorDefaults' [pageSettings]="pageSettings">
        <e-nodes>
            <e-node id='node1' [offsetX]=150 [offsetY]=150>
                <e-node-annotations>
                    <e-node-annotation id="label1" content="Rectangle1" [horizontalAlignment]="horizontalAlignment">
                    </e-node-annotation>
                </e-node-annotations>
            </e-node>
            <e-node id='node2' [offsetX]=350 [offsetY]=150>
                <e-node-annotations>
                    <e-node-annotation id="label1" content="Rectangle2" [horizontalAlignment]="horizontalAlignment">
                    </e-node-annotation>
                </e-node-annotations>
            </e-node>
        </e-nodes>
        <e-connectors>
            <e-connector id='connector' type='Orthogonal' [sourceID]='node1' [targetID]='node2'>
            </e-connector>
        </e-connectors>
    </ejs-diagram>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent {
    @ViewChild("diagram")
    public diagram: DiagramComponent;
    public pageSettings: PageSettingsModel;
    ngOnInit(): void {
        // Defines the pageSettings for the diagram
        this.pageSettings = {
            orientation: 'Landscape',
            showPageBreaks: true,
            // Defines the background Image source
            background: {
                source: 'https://www.w3schools.com/images/w3schools_green.jpg',
                // Defines the scale values for the background image
                scale:'Meet',
                // Defines the align values for the background image
                align:'XMinYMin'
            },
            width: 300,
            height: 300,
            margin: {
                left: 10,
                top: 10,
                bottom: 10
            },
        }
    }
    public getNodeDefaults(node: NodeModel): NodeModel {
        node.height = 100;
        node.width = 100;
        node.style.fill = "#6BA5D7";
        node.style.strokeColor = "White";
        return node;
    }
    public getConnectorDefaults(obj: ConnectorModel): ConnectorModel {
        obj.style = {
            strokeColor: '#6BA5D7',
            fill: '#6BA5D7',
            strokeWidth: 2
        }
        obj.targetDecorator = {
            style: {
                fill: '#6BA5D7',
                strokeColor: '#6BA5D7'
            }
        }
    }
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { DiagramModule } from '@syncfusion/ej2-angular-diagrams';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, DiagramModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [ ]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

Multiple page and page breaks

When multiple page is enabled, the 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.

The 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.

Source
Preview
app.component.ts
app.module.ts
main.ts
import { Component, ViewEncapsulation, OnInit, ViewChild } from '@angular/core';
import { DiagramComponent, Diagram, NodeModel, ConnectorModel, PageSettingsModel } from '@syncfusion/ej2-angular-diagrams';

@Component({
    selector: "app-container",
    template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px" [getNodeDefaults] ='getNodeDefaults' [getConnectorDefaults]='getConnectorDefaults' [pageSettings]="pageSettings">
        <e-nodes>
            <e-node id='node1' [offsetX]=150 [offsetY]=150>
                <e-node-annotations>
                    <e-node-annotation id="label1" content="Rectangle1" [horizontalAlignment]="horizontalAlignment">
                    </e-node-annotation>
                </e-node-annotations>
            </e-node>
            <e-node id='node2' [offsetX]=350 [offsetY]=150>
                <e-node-annotations>
                    <e-node-annotation id="label1" content="Rectangle2" [horizontalAlignment]="horizontalAlignment">
                    </e-node-annotation>
                </e-node-annotations>
            </e-node>
        </e-nodes>
        <e-connectors>
            <e-connector id='connector' type='Orthogonal' [sourceID]='node1' [targetID]='node2'>
            </e-connector>
        </e-connectors>
    </ejs-diagram>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent {
    @ViewChild("diagram")
    public diagram: DiagramComponent;
    public pageSettings: PageSettingsModel;
    ngOnInit(): void {
        // Defines the pageSettings for the diagram
        this.pageSettings = {
            orientation: 'Landscape',
            // Sets the Multiple page for diagram
            multiplePage: true,
            // Sets the Page Break for diagram
            showPageBreaks: true,
            width: 300,
            height: 300,
            margin: {
                left: 10,
                top: 10,
                bottom: 10
            },
        }
    }
    public getNodeDefaults(node: NodeModel): NodeModel {
        node.height = 100;
        node.width = 100;
        node.style.fill = "#6BA5D7";
        node.style.strokeColor = "White";
        return node;
    }
    public getConnectorDefaults(obj: ConnectorModel): ConnectorModel {
        obj.style = {
            strokeColor: '#6BA5D7',
            fill: '#6BA5D7',
            strokeWidth: 2
        }
        obj.targetDecorator = {
            style: {
                fill: '#6BA5D7',
                strokeColor: '#6BA5D7'
            }
        }
    }
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { DiagramModule } from '@syncfusion/ej2-angular-diagrams';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, DiagramModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [ ]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

Boundary constraints

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

The following code example illustrates how to define boundary constraints with respect to the page.

Source
Preview
app.component.ts
app.module.ts
main.ts
import { Component, ViewEncapsulation, OnInit, ViewChild } from '@angular/core';
import { DiagramComponent, Diagram, NodeModel, ConnectorModel, PageSettingsModel } from '@syncfusion/ej2-angular-diagrams';

@Component({
    selector: "app-container",
    template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px" [getNodeDefaults] ='getNodeDefaults' [getConnectorDefaults]='getConnectorDefaults' [pageSettings]="pageSettings">
        <e-nodes>
            <e-node id='node1' [offsetX]=150 [offsetY]=150>
                <e-node-annotations>
                    <e-node-annotation id="label1" content="Rectangle1" [horizontalAlignment]="horizontalAlignment">
                    </e-node-annotation>
                </e-node-annotations>
            </e-node>
            <e-node id='node2' [offsetX]=350 [offsetY]=150>
                <e-node-annotations>
                    <e-node-annotation id="label1" content="Rectangle2" [horizontalAlignment]="horizontalAlignment">
                    </e-node-annotation>
                </e-node-annotations>
            </e-node>
        </e-nodes>
        <e-connectors>
            <e-connector id='connector' type='Orthogonal' [sourceID]='node1' [targetID]='node2'>
            </e-connector>
        </e-connectors>
    </ejs-diagram>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent {
    @ViewChild("diagram")
    public diagram: DiagramComponent;
    public pageSettings: PageSettingsModel;
    ngOnInit(): void {
        // Defines the pageSettings for the diagram
        this.pageSettings = {
            // Sets the BoundaryConstraints to page
            boundaryConstraints: 'Page',
            background: {
                color: 'grey'
            },
            width: 400,
            height: 400,
            showPageBreaks: true,
        }
    }
    public getNodeDefaults(node: NodeModel): NodeModel {
        node.height = 100;
        node.width = 100;
        node.style.fill = "#6BA5D7";
        node.style.strokeColor = "White";
        return node;
    }
    public getConnectorDefaults(obj: ConnectorModel): ConnectorModel {
        obj.style = {
            strokeColor: '#6BA5D7',
            fill: '#6BA5D7',
            strokeWidth: 2
        }
        obj.targetDecorator = {
            style: {
                fill: '#6BA5D7',
                strokeColor: '#6BA5D7'
            }
        }
    }
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { DiagramModule } from '@syncfusion/ej2-angular-diagrams';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, DiagramModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [ ]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);