Angular Lightbox

npm install @reelkit/angular-lightbox @reelkit/angular lucide-angular

import {
  RkLightboxOverlayComponent,
  RkLightboxControlsDirective,
  RkLightboxNavigationDirective,
  RkLightboxInfoDirective,
  RkCloseButtonComponent,
  RkCounterComponent,
  RkFullscreenButtonComponent,
  type LightboxItem,
  type LightboxControlsContext,
  type LightboxNavContext,
} from '@reelkit/angular-lightbox';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [
    RkLightboxOverlayComponent,
    RkLightboxControlsDirective,
    RkLightboxNavigationDirective,
    RkLightboxInfoDirective,
    RkCloseButtonComponent,
    RkCounterComponent,
    RkFullscreenButtonComponent,
  ],
  template: `
    <rk-lightbox-overlay [isOpen]="isOpen" [items]="images" (closed)="isOpen = false">

      <!-- Custom controls bar -->
      <ng-template rkLightboxControls
                   let-onClose="onClose"
                   let-activeIndex="activeIndex"
                   let-count="count"
                   let-isFullscreen="isFullscreen"
                   let-onToggleFullscreen="onToggleFullscreen">
        <div style="position:absolute;top:0;left:0;right:0;padding:12px;
                    display:flex;align-items:center;justify-content:space-between">
          <rk-close-button (clicked)="onClose()" />
          <rk-counter [currentIndex]="activeIndex + 1" [count]="count" />
          <rk-fullscreen-button
            [isFullscreen]="isFullscreen"
            (toggled)="onToggleFullscreen()" />
        </div>
      </ng-template>

      <!-- Custom navigation -->
      <ng-template rkLightboxNavigation
                   let-onPrev="onPrev"
                   let-onNext="onNext"
                   let-activeIndex="activeIndex"
                   let-count="count">
        <button (click)="onPrev()" [disabled]="activeIndex === 0">&#8592;</button>
        <button (click)="onNext()" [disabled]="activeIndex === count - 1">&#8594;</button>
      </ng-template>

      <!-- Custom info overlay -->
      <ng-template rkLightboxInfo let-item let-index="index">
        <div style="position:absolute;bottom:0;left:0;right:0;padding:16px;
                    background:linear-gradient(transparent,rgba(0,0,0,0.6))">
          <h3 style="color:#fff">{{ item.title }}</h3>
          <p style="color:rgba(255,255,255,0.7)">{{ item.description }}</p>
        </div>
      </ng-template>

    </rk-lightbox-overlay>
  `,
})
export class AppComponent {
  images: LightboxItem[] = [];
  isOpen = false;
}

import {
  RkLightboxOverlayComponent,
  RkLightboxSlideDirective,
  RkLightboxVideoSlideComponent,
  type LightboxItem,
  type LightboxSlideContext,
} from '@reelkit/angular-lightbox';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [
    RkLightboxOverlayComponent,
    RkLightboxSlideDirective,
    RkLightboxVideoSlideComponent,
  ],
  template: `
    <rk-lightbox-overlay [isOpen]="isOpen" [items]="items" (closed)="isOpen = false">
      <ng-template rkLightboxSlide
                   let-item
                   let-size="size"
                   let-isActive="isActive">
        @if (item.type === 'video') {
          <rk-lightbox-video-slide
            [item]="item"
            [size]="size"
            [isActive]="isActive"
          />
        } @else {
          <img [src]="item.src"
               [style.width.px]="size[0]"
               [style.height.px]="size[1]"
               style="object-fit:contain" />
        }
      </ng-template>
    </rk-lightbox-overlay>
  `,
})
export class AppComponent {
  isOpen = false;
  items: LightboxItem[] = [
    { src: '/photo.jpg', title: 'Photo' },
    { src: '/clip.mp4', type: 'video', poster: '/clip-thumb.jpg', title: 'Video' },
  ];
}

import { fullscreenSignal, requestFullscreen, exitFullscreen } from '@reelkit/angular';

@Component({ ... })
export class AppComponent {
  readonly isFullscreen = fullscreenSignal();

  toggle(container: HTMLElement): void {
    if (this.isFullscreen()) {
      exitFullscreen();
    } else {
      requestFullscreen(container);
    }
  }
}

import { RkLightboxUrlOverlayComponent } from '@reelkit/angular-lightbox';
import { createOverlayUrlState, urlIndexKey, urlStableIdKey } from '@reelkit/angular';

@Component({
  imports: [RkLightboxUrlOverlayComponent, RouterLink],
  template: `
    @for (image of images(); track image.src; let i = $index) {
      <a [routerLink]="[]" [queryParams]="{ photo: i }">
        <img [src]="image.src" alt="" />
      </a>
    }

    <rk-lightbox-url-overlay [controller]="photo" [items]="images()" />
  `,
})
export class GalleryComponent {
  protected readonly images = signal(photos);

  protected readonly photo = createOverlayUrlState({
    param: 'photo',
    ...urlIndexKey(() => this.images().length),
  });
}

import { createRouterUrlAdapter } from '@reelkit/angular/ng-router-url-adapter';

const adapter = createRouterUrlAdapter();

const photo = createOverlayUrlState({
  param: 'photo',
  adapter,
  ...urlIndexKey(() => this.images().length),
});

const photo = createOverlayUrlState({
  param: 'photo',
  ...urlStableIdKey({ items: () => this.images() }),
});

const photo = createOverlayUrlState({
  param: 'photo',
  codec: { decode: (raw) => raw, encode: (id) => id },
  locator: {
    locate: (id) => this.images().findIndex((x) => x.id === id),
    identify: (index) => this.images()[index].id,
  },
});

const photo = createOverlayUrlState({
  param: 'photo',
  codec: { decode: (raw) => raw, encode: (id) => id },
  locator: {
    locate: (id) => this.images().findIndex((x) => x.id === id),
    identify: (index) => this.images()[index].id,
    locateAsync: async (id) => {
      const loaded = await loadById(id); // or loadUntil(id) — fetch just that one, or page up to it
      if (!loaded) return null; // exhausted — link names no item
      this.images.set(loaded); // commit; the overlay renders from this
      return loaded.findIndex((x) => x.id === id); // wherever it landed
    },
  },
});

import {
  RkLightboxOverlayComponent,
  lightboxFadeTransition,
} from '@reelkit/angular-lightbox';

@Component({
  imports: [RkLightboxOverlayComponent],
  template: `
    <rk-lightbox-overlay
      [isOpen]="isOpen"
      [items]="images"
      [transitionFn]="lightboxFadeTransition"
      (closed)="isOpen = false"
    />
  `,
})
export class GalleryComponent {
  protected readonly lightboxFadeTransition = lightboxFadeTransition;
}

<rk-lightbox-overlay [isOpen]="isOpen" [items]="items" (closed)="isOpen = false">
  <ng-template rkLightboxSlide
               let-item
               let-size="size"
               let-isActive="isActive"
               let-onReady="onReady"
               let-onWaiting="onWaiting"
               let-onError="onError">
    @if (item.type === 'video') {
      <rk-lightbox-video-slide
        [item]="item"
        [size]="size"
        [isActive]="isActive"
      />
    } @else {
      <img [src]="item.src"
           [style.width.px]="size[0]"
           [style.height.px]="size[1]"
           style="object-fit:contain"
           (load)="onReady()"
           (error)="onError()" />
    }
  </ng-template>
</rk-lightbox-overlay>

<rk-lightbox-overlay [isOpen]="isOpen" [items]="items" (closed)="isOpen = false">
  <ng-template rkLightboxLoading let-index let-item="item">
    <div style="display:flex;flex-direction:column;align-items:center;color:#fff">
      <span>Loading image {{ index + 1 }}...</span>
      <span style="opacity:0.6">{{ item.title }}</span>
    </div>
  </ng-template>
</rk-lightbox-overlay>

<rk-lightbox-overlay [isOpen]="isOpen" [items]="items" (closed)="isOpen = false">
  <ng-template rkLightboxError let-index let-item="item">
    <div style="display:flex;flex-direction:column;align-items:center;color:#ef4444">
      <span>Failed to load</span>
      <span style="opacity:0.6">{{ item.title ?? item.src }}</span>
    </div>
  </ng-template>
</rk-lightbox-overlay>

/* Brand the lightbox */
:root {
  --rk-lightbox-overlay-bg: #0f172a;
  --rk-lightbox-btn-bg: rgba(99, 102, 241, 0.65);
  --rk-lightbox-btn-bg-hover: rgba(168, 85, 247, 0.85);
  --rk-lightbox-nav-size: 56px;
  --rk-lightbox-counter-bg: rgba(99, 102, 241, 0.65);
  --rk-lightbox-info-bg: linear-gradient(
    transparent,
    rgba(99, 102, 241, 0.55) 60%,
    rgba(168, 85, 247, 0.85)
  );
}