Angular Gallery - Customize Item Appearance

Gallery items are not sctrictly images. They can contain text or other elements of your choice. For a minor customization of Gallery items, you can define specific fields in item data objects. For example, the following code generates two items: one is disabled and the other has a specified alt attribute.

HTML
TypeScript
  • <dx-gallery
  • [dataSource]="galleryDataSource"
  • [height]="300">
  • </dx-gallery>
  • import { DxGalleryModule } from "devextreme-angular";
  • // ...
  • export class AppComponent {
  • galleryDataSource = [{
  • imageSrc: "https://js.devexpress.com/Content/images/doc/21_1/PhoneJS/person1.png",
  • disabled: true
  • }, {
  • imageSrc: "https://js.devexpress.com/Content/images/doc/21_1/PhoneJS/person2.png",
  • imageAlt: "Peter"
  • }];
  • }
  • @NgModule({
  • imports: [
  • // ...
  • DxGalleryModule
  • ],
  • // ...
  • })

If you need a more flexible solution, define an itemTemplate. In Angular and Vue, you can declare it in the markup. In React, you can use a rendering function (shown in the code below) or component:

HTML
TypeScript
  • <dx-gallery
  • [dataSource]="galleryDataSource"
  • [height]="300"
  • itemTemplate="item">
  • <div *dxTemplate="let data of 'item'">
  • <p><b>Name</b>: <span>{{data.name}}</span></p>
  • <img src="{{data.path}}" alt="{{data.name}}" />
  • </div>
  • </dx-gallery>
  • import { DxGalleryModule } from "devextreme-angular";
  • // ...
  • export class AppComponent {
  • galleryDataSource = [
  • { path: "https://js.devexpress.com/Content/images/doc/21_1/PhoneJS/person1.png", name: "Maria" },
  • { path: "https://js.devexpress.com/Content/images/doc/21_1/PhoneJS/person2.png", name: "John" },
  • { path: "https://js.devexpress.com/Content/images/doc/21_1/PhoneJS/person3.png", name: "Xavier" }
  • ];
  • }
  • @NgModule({
  • imports: [
  • // ...
  • DxGalleryModule
  • ],
  • // ...
  • })

If you use jQuery alone, use DOM manipulation methods to combine the HTML markup for menu items. To apply this markup, use the itemTemplate callback function as shown in the following code.

JavaScript
  • $(function () {
  • $("#galleryContainer").dxGallery({
  • dataSource: galleryData,
  • height: 300,
  • itemTemplate: function(e){
  • e.itemElement.empty();
  • e.itemElement.append("<p><b>Name</b>: " + e.itemData.name + "</p>");
  • e.itemElement.append("<img src=\"" + e.itemData.path + "\" alt=\"" + e.itemData.name + "\"/>");
  • }
  • });
  • });

You can also customize an individual Gallery item. For this purpose, declare a template for this item as a script and pass its id to the template field of the item's data object.

HTML
JavaScript
  • <script id="individualTemplate" type="text/html">
  • <!-- ... -->
  • </script>
  • const galleryData = [{
  • imageSrc: "https://js.devexpress.com/Content/images/doc/21_1/PhoneJS/person1.png",
  • imageAlt: "Maria",
  • template: $("#individualTemplate"),
  • },
  • // ...
  • ];

In addition, you can use a 3rd-party template engine to customize UI component appearance. For more information, see the 3rd-Party Template Engines article.

Built-In Template Engine Demo 3rd-Party Template Engine Demo

See Also