feat(web): add an option to fill the screen with the slideshow view (#8909)

* feat: add an option to fill the screen with the slideshow view

* fix: rename var

web/src/lib/components/asset-viewer/photo-viewer.svelte

@@ -14,6 +14,9 @@
   import LoadingSpinner from '../shared-components/loading-spinner.svelte';
   import { NotificationType, notificationController } from '../shared-components/notification/notification';
   import { getAltText } from '$lib/utils/thumbnail-util';
+  import { slideshowLookCssMapping, SlideshowState, slideshowStore } from '$lib/stores/slideshow.store';
+
+  const { slideshowState, slideshowLook } = slideshowStore;
 
   export let asset: AssetResponseDto;
   export let preloadAssets: AssetResponseDto[] | null = null;
@@ -158,7 +161,9 @@
         transition:fade={{ duration: haveFadeTransition ? 150 : 0 }}
         src={assetData}
         alt={getAltText(asset)}
-        class="h-full w-full object-contain"
+        class="h-full w-full {$slideshowState === SlideshowState.None
+          ? 'object-contain'
+          : slideshowLookCssMapping[$slideshowLook]}"
         draggable="false"
       />
       {#each getBoundingBox($boundingBoxesArray, $photoZoomState, $photoViewer) as boundingbox}

web/src/lib/components/slideshow-settings.svelte

@@ -4,27 +4,34 @@
     SettingInputFieldType,
   } from '$lib/components/shared-components/settings/setting-input-field.svelte';
   import SettingSwitch from '$lib/components/shared-components/settings/setting-switch.svelte';
-  import { mdiArrowDownThin, mdiArrowUpThin, mdiShuffle } from '@mdi/js';
-  import { SlideshowNavigation, slideshowStore } from '../stores/slideshow.store';
+  import { mdiArrowDownThin, mdiArrowUpThin, mdiFitToPageOutline, mdiFitToScreenOutline, mdiShuffle } from '@mdi/js';
+  import { SlideshowLook, SlideshowNavigation, slideshowStore } from '../stores/slideshow.store';
   import Button from './elements/buttons/button.svelte';
   import type { RenderedOption } from './elements/dropdown.svelte';
   import SettingDropdown from './shared-components/settings/setting-dropdown.svelte';
 
-  const { slideshowDelay, showProgressBar, slideshowNavigation } = slideshowStore;
+  const { slideshowDelay, showProgressBar, slideshowNavigation, slideshowLook } = slideshowStore;
 
   export let onClose = () => {};
 
-  const options: Record<SlideshowNavigation, RenderedOption> = {
+  const navigationOptions: Record<SlideshowNavigation, RenderedOption> = {
     [SlideshowNavigation.Shuffle]: { icon: mdiShuffle, title: 'Shuffle' },
     [SlideshowNavigation.AscendingOrder]: { icon: mdiArrowUpThin, title: 'Backward' },
     [SlideshowNavigation.DescendingOrder]: { icon: mdiArrowDownThin, title: 'Forward' },
   };
 
-  const handleToggle = (selectedOption: RenderedOption) => {
+  const lookOptions: Record<SlideshowLook, RenderedOption> = {
+    [SlideshowLook.Contain]: { icon: mdiFitToScreenOutline, title: 'Contain' },
+    [SlideshowLook.Cover]: { icon: mdiFitToPageOutline, title: 'Cover' },
+  };
+
+  const handleToggle = <Type extends SlideshowNavigation | SlideshowLook>(
+    record: RenderedOption,
+    options: Record<Type, RenderedOption>,
+  ): undefined | Type => {
     for (const [key, option] of Object.entries(options)) {
-      if (option === selectedOption) {
-        $slideshowNavigation = key as SlideshowNavigation;
-        break;
+      if (option === record) {
+        return key as Type;
       }
     }
   };
@@ -34,9 +41,19 @@
   <div class="flex flex-col gap-4 text-immich-primary dark:text-immich-dark-primary">
     <SettingDropdown
       title="Direction"
-      options={Object.values(options)}
-      selectedOption={options[$slideshowNavigation]}
-      onToggle={(option) => handleToggle(option)}
+      options={Object.values(navigationOptions)}
+      selectedOption={navigationOptions[$slideshowNavigation]}
+      onToggle={(option) => {
+        $slideshowNavigation = handleToggle(option, navigationOptions) || $slideshowNavigation;
+      }}
+    />
+    <SettingDropdown
+      title="Look"
+      options={Object.values(lookOptions)}
+      selectedOption={lookOptions[$slideshowLook]}
+      onToggle={(option) => {
+        $slideshowLook = handleToggle(option, lookOptions) || $slideshowLook;
+      }}
     />
     <SettingSwitch id="show-progress-bar" title="Show Progress Bar" bind:checked={$showProgressBar} />
     <SettingInputField

web/src/lib/stores/slideshow.store.ts

@@ -13,6 +13,16 @@ export enum SlideshowNavigation {
   DescendingOrder = 'descending-order',
 }
 
+export enum SlideshowLook {
+  Contain = 'contain',
+  Cover = 'cover',
+}
+
+export const slideshowLookCssMapping: Record<SlideshowLook, string> = {
+  [SlideshowLook.Contain]: 'object-contain',
+  [SlideshowLook.Cover]: 'object-cover',
+};
+
 function createSlideshowStore() {
   const restartState = writable<boolean>(false);
   const stopState = writable<boolean>(false);
@@ -21,6 +31,7 @@ function createSlideshowStore() {
     'slideshow-navigation',
     SlideshowNavigation.DescendingOrder,
   );
+  const slideshowLook = persisted<SlideshowLook>('slideshow-look', SlideshowLook.Contain);
   const slideshowState = writable<SlideshowState>(SlideshowState.None);
 
   const showProgressBar = persisted<boolean>('slideshow-show-progressbar', true);
@@ -50,6 +61,7 @@ function createSlideshowStore() {
       },
     },
     slideshowNavigation,
+    slideshowLook,
     slideshowState,
     slideshowDelay,
     showProgressBar,