Column resizing in Angular Gantt component

19 Sep 20228 minutes to read

The column width can be resized by clicking and dragging the right edge of the column header. While dragging, the width of the column will be resized immediately. Each column can be auto resized by double-clicking the right edge of the column header to fit the width of that column based on the widest cell content. To resize the column, set the columns.allowResizing property to true. The following code example shows how to enable the column resize feature in the Gantt component.

To resize the column, inject the ResizeService in the provider section of AppModule.

app.component.ts

import { Component, ViewEncapsulation, OnInit } from '@angular/core';
import { Gantt } from '@syncfusion/ej2-gantt';
import { projectNewData } from './data';

@Component({
    selector: 'app-root',
    template:
       `<ejs-gantt id="ganttDefault" height="430px" [dataSource]="data"  [taskFields]="taskSettings" [columns]="columns" [splitterSettings] = "splitterSettings" [allowResizing] = 'true'></ejs-gantt>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent{
    // Data for Gantt
    public data: object[];
    public taskSettings: object;
    public splitterSettings: object;
    public columns: object[];
    public ngOnInit(): void {
        this.data = projectNewData;
        this.taskSettings = {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            duration: 'Duration',
            progress: 'Progress',
            child: 'subtasks'
        };
        this.columns =  [
            { field: 'TaskID', headerText: 'Task ID', textAlign: 'Left', width: '100' },
            { field: 'TaskName', headerText: 'Task Name', width: '150' },
            { field: 'StartDate', headerText: 'Start Date', width: '150' },
            { field: 'Duration', headerText: 'Duration', width: '150' },
            { field: 'Progress', headerText: 'Progress', width: '150' },
        ];
        this.splitterSettings = {
            columnIndex:4
            };
    }
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { GanttModule } from '@syncfusion/ej2-angular-gantt';
import { ResizeService } from '@syncfusion/ej2-angular-gantt';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, GanttModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [ResizeService]
})
export class AppModule { }

main.ts

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

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

You can disable resizing for a particular column by setting the columns.allowResizing to false.

Defining minimum and maximum column width

The column resizing can be restricted between minimum and maximum widths by defining the columns->minWidth and columns->maxWidth properties.

In the following example, the minimum and maximum widths are defined for the Duration, and Task Name columns.

app.component.ts

import { Component, ViewEncapsulation, OnInit } from '@angular/core';
import { Gantt } from '@syncfusion/ej2-gantt';
import { projectNewData } from './data';

@Component({
    selector: 'app-root',
    template:
       `<ejs-gantt id="ganttDefault" height="430px" [dataSource]="data"  [taskFields]="taskSettings" [columns]="columns" [splitterSettings] = "splitterSettings" [allowResizing] = 'true'></ejs-gantt>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent{
    // Data for Gantt
    public data: object[];
    public taskSettings: object;
    public splitterSettings: object;
    public columns: object[];
    public ngOnInit(): void {
        this.data = projectNewData;
        this.taskSettings = {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            duration: 'Duration',
            progress: 'Progress',
            child: 'subtasks'
        };
        this.columns =  [
            { field: 'TaskID', headerText: 'Task ID', textAlign: 'Left', width: '100' },
            { field: 'TaskName', headerText: 'Task Name', width: '200',minWidth: '150' ,maxWidth: '250',},
            { field: 'StartDate', headerText: 'Start Date', width: '150' },
            { field: 'Duration', headerText: 'Duration', width: '100',minWidth: '50' ,maxWidth: '200' },
            { field: 'Progress', headerText: 'Progress', width: '150' },
        ];
        this.splitterSettings = {
            columnIndex:4
            };
    }
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { GanttModule } from '@syncfusion/ej2-angular-gantt';
import { ResizeService } from '@syncfusion/ej2-angular-gantt';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, GanttModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
    providers: [ResizeService]
})
export class AppModule { }

main.ts

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

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