Gallery scrubber (#5133)

graphql/schema/types/gallery.graphql

@@ -1,3 +1,7 @@
+type GalleryPathsType {
+  preview: String! # Resolver
+}
+
 "Gallery type"
 type Gallery {
   id: ID!
@@ -25,6 +29,9 @@ type Gallery {
   performers: [Performer!]!
 
   cover: Image
+
+  paths: GalleryPathsType! # Resolver
+  image(index: Int!): Image!
 }
 
 input GalleryCreateInput {

internal/api/context_keys.go

@@ -5,8 +5,8 @@ package api
 type key int
 
 const (
-	// galleryKey key = 0
-	performerKey key = iota + 1
+	galleryKey key = 0
+	performerKey
 	sceneKey
 	studioKey
 	groupKey

internal/api/resolver_model_gallery.go

@@ -2,8 +2,10 @@ package api
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/stashapp/stash/internal/api/loaders"
+	"github.com/stashapp/stash/internal/api/urlbuilders"
 	"github.com/stashapp/stash/internal/manager/config"
 
 	"github.com/stashapp/stash/pkg/image"
@@ -189,3 +191,28 @@ func (r *galleryResolver) Urls(ctx context.Context, obj *models.Gallery) ([]stri
 
 	return obj.URLs.List(), nil
 }
+
+func (r *galleryResolver) Paths(ctx context.Context, obj *models.Gallery) (*GalleryPathsType, error) {
+	baseURL, _ := ctx.Value(BaseURLCtxKey).(string)
+	builder := urlbuilders.NewGalleryURLBuilder(baseURL, obj)
+	previewPath := builder.GetPreviewURL()
+
+	return &GalleryPathsType{
+		Preview: previewPath,
+	}, nil
+}
+
+func (r *galleryResolver) Image(ctx context.Context, obj *models.Gallery, index int) (ret *models.Image, err error) {
+	if index < 0 {
+		return nil, fmt.Errorf("index must >= 0")
+	}
+
+	if err := r.withReadTxn(ctx, func(ctx context.Context) error {
+		ret, err = r.repository.Image.FindByGalleryIDIndex(ctx, obj.ID, uint(index))
+		return err
+	}); err != nil {
+		return nil, err
+	}
+
+	return
+}

internal/api/routes_gallery.go

@@ -0,0 +1,116 @@
+package api
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"strconv"
+
+	"github.com/go-chi/chi/v5"
+
+	"github.com/stashapp/stash/pkg/logger"
+	"github.com/stashapp/stash/pkg/models"
+)
+
+type GalleryFinder interface {
+	models.GalleryGetter
+	FindByChecksum(ctx context.Context, checksum string) ([]*models.Gallery, error)
+}
+
+type ImageByIndexer interface {
+	FindByGalleryIDIndex(ctx context.Context, galleryID int, index uint) (*models.Image, error)
+}
+
+type galleryRoutes struct {
+	routes
+	imageRoutes   imageRoutes
+	galleryFinder GalleryFinder
+	imageFinder   ImageByIndexer
+	fileGetter    models.FileGetter
+}
+
+func (rs galleryRoutes) Routes() chi.Router {
+	r := chi.NewRouter()
+
+	r.Route("/{galleryId}", func(r chi.Router) {
+		r.Use(rs.GalleryCtx)
+
+		r.Get("/preview/{imageIndex}", rs.Preview)
+	})
+
+	return r
+}
+
+func (rs galleryRoutes) Preview(w http.ResponseWriter, r *http.Request) {
+	g := r.Context().Value(galleryKey).(*models.Gallery)
+	indexQueryParam := chi.URLParam(r, "imageIndex")
+	var i *models.Image
+
+	index, err := strconv.Atoi(indexQueryParam)
+	if err != nil || index < 0 {
+		http.Error(w, "bad index", 400)
+		return
+	}
+
+	_ = rs.withReadTxn(r, func(ctx context.Context) error {
+		qb := rs.imageFinder
+		i, _ = qb.FindByGalleryIDIndex(ctx, g.ID, uint(index))
+		// TODO - handle errors?
+
+		// serveThumbnail needs files populated
+		if err := i.LoadPrimaryFile(ctx, rs.fileGetter); err != nil {
+			if !errors.Is(err, context.Canceled) {
+				logger.Errorf("error loading primary file for image %d: %v", i.ID, err)
+			}
+			// set image to nil so that it doesn't try to use the primary file
+			i = nil
+		}
+
+		return nil
+	})
+	if i == nil {
+		http.Error(w, http.StatusText(404), 404)
+		return
+	}
+
+	rs.imageRoutes.serveThumbnail(w, r, i)
+}
+
+func (rs galleryRoutes) GalleryCtx(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		galleryIdentifierQueryParam := chi.URLParam(r, "galleryId")
+		galleryID, _ := strconv.Atoi(galleryIdentifierQueryParam)
+
+		var gallery *models.Gallery
+		_ = rs.withReadTxn(r, func(ctx context.Context) error {
+			qb := rs.galleryFinder
+			if galleryID == 0 {
+				galleries, _ := qb.FindByChecksum(ctx, galleryIdentifierQueryParam)
+				if len(galleries) > 0 {
+					gallery = galleries[0]
+				}
+			} else {
+				gallery, _ = qb.Find(ctx, galleryID)
+			}
+
+			if gallery != nil {
+				if err := gallery.LoadPrimaryFile(ctx, rs.fileGetter); err != nil {
+					if !errors.Is(err, context.Canceled) {
+						logger.Errorf("error loading primary file for gallery %d: %v", galleryID, err)
+					}
+					// set image to nil so that it doesn't try to use the primary file
+					gallery = nil
+				}
+			}
+
+			return nil
+		})
+		if gallery == nil {
+			http.Error(w, http.StatusText(404), 404)
+			return
+		}
+
+		ctx := context.WithValue(r.Context(), galleryKey, gallery)
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}

internal/api/routes_image.go

@@ -46,8 +46,12 @@ func (rs imageRoutes) Routes() chi.Router {
 }
 
 func (rs imageRoutes) Thumbnail(w http.ResponseWriter, r *http.Request) {
-	mgr := manager.GetInstance()
 	img := r.Context().Value(imageKey).(*models.Image)
+	rs.serveThumbnail(w, r, img)
+}
+
+func (rs imageRoutes) serveThumbnail(w http.ResponseWriter, r *http.Request, img *models.Image) {
+	mgr := manager.GetInstance()
 	filepath := mgr.Paths.Generated.GetThumbnailPath(img.Checksum, models.DefaultGthumbWidth)
 
 	// if the thumbnail doesn't exist, encode on the fly

internal/api/server.go

@@ -207,6 +207,7 @@ func Initialize() (*Server, error) {
 
 	r.Mount("/performer", server.getPerformerRoutes())
 	r.Mount("/scene", server.getSceneRoutes())
+	r.Mount("/gallery", server.getGalleryRoutes())
 	r.Mount("/image", server.getImageRoutes())
 	r.Mount("/studio", server.getStudioRoutes())
 	r.Mount("/group", server.getGroupRoutes())
@@ -326,6 +327,16 @@ func (s *Server) getSceneRoutes() chi.Router {
 	}.Routes()
 }
 
+func (s *Server) getGalleryRoutes() chi.Router {
+	repo := s.manager.Repository
+	return galleryRoutes{
+		routes:        routes{txnManager: repo.TxnManager},
+		imageFinder:   repo.Image,
+		galleryFinder: repo.Gallery,
+		fileGetter:    repo.File,
+	}.Routes()
+}
+
 func (s *Server) getImageRoutes() chi.Router {
 	repo := s.manager.Repository
 	return imageRoutes{

internal/api/urlbuilders/gallery.go

@@ -0,0 +1,23 @@
+package urlbuilders
+
+import (
+	"strconv"
+
+	"github.com/stashapp/stash/pkg/models"
+)
+
+type GalleryURLBuilder struct {
+	BaseURL   string
+	GalleryID string
+}
+
+func NewGalleryURLBuilder(baseURL string, gallery *models.Gallery) GalleryURLBuilder {
+	return GalleryURLBuilder{
+		BaseURL:   baseURL,
+		GalleryID: strconv.Itoa(gallery.ID),
+	}
+}
+
+func (b GalleryURLBuilder) GetPreviewURL() string {
+	return b.BaseURL + "/gallery/" + b.GalleryID + "/preview"
+}

pkg/models/mocks/ImageReaderWriter.go

@@ -301,6 +301,29 @@ func (_m *ImageReaderWriter) FindByGalleryID(ctx context.Context, galleryID int)
 	return r0, r1
 }
 
+// FindByGalleryIDIndex provides a mock function with given fields: ctx, galleryID, index
+func (_m *ImageReaderWriter) FindByGalleryIDIndex(ctx context.Context, galleryID int, index uint) (*models.Image, error) {
+	ret := _m.Called(ctx, galleryID, index)
+
+	var r0 *models.Image
+	if rf, ok := ret.Get(0).(func(context.Context, int, uint) *models.Image); ok {
+		r0 = rf(ctx, galleryID, index)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*models.Image)
+		}
+	}
+
+	var r1 error
+	if rf, ok := ret.Get(1).(func(context.Context, int, uint) error); ok {
+		r1 = rf(ctx, galleryID, index)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
 // FindByZipFileID provides a mock function with given fields: ctx, zipFileID
 func (_m *ImageReaderWriter) FindByZipFileID(ctx context.Context, zipFileID models.FileID) ([]*models.Image, error) {
 	ret := _m.Called(ctx, zipFileID)

pkg/models/repository_image.go

@@ -18,6 +18,7 @@ type ImageFinder interface {
 	FindByFolderID(ctx context.Context, fileID FolderID) ([]*Image, error)
 	FindByZipFileID(ctx context.Context, zipFileID FileID) ([]*Image, error)
 	FindByGalleryID(ctx context.Context, galleryID int) ([]*Image, error)
+	FindByGalleryIDIndex(ctx context.Context, galleryID int, index uint) (*Image, error)
 }
 
 // ImageQueryer provides methods to query images.

pkg/sqlite/image.go

@@ -568,8 +568,6 @@ func (qb *ImageStore) FindByChecksum(ctx context.Context, checksum string) ([]*m
 
 func (qb *ImageStore) FindByGalleryID(ctx context.Context, galleryID int) ([]*models.Image, error) {
 	table := qb.table()
-	fileTable := fileTableMgr.table
-	folderTable := folderTableMgr.table
 
 	sq := dialect.From(table).
 		InnerJoin(
@@ -584,7 +582,7 @@ func (qb *ImageStore) FindByGalleryID(ctx context.Context, galleryID int) ([]*mo
 		table.Col(idColumn).Eq(
 			sq,
 		),
-	).Order(folderTable.Col("path").Asc(), fileTable.Col("basename").Asc())
+	).Order(goqu.L("COALESCE(folders.path, '') || COALESCE(files.basename, '') COLLATE NATURAL_CI").Asc())
 
 	ret, err := qb.getMany(ctx, q)
 	if err != nil {
@@ -594,6 +592,33 @@ func (qb *ImageStore) FindByGalleryID(ctx context.Context, galleryID int) ([]*mo
 	return ret, nil
 }
 
+func (qb *ImageStore) FindByGalleryIDIndex(ctx context.Context, galleryID int, index uint) (*models.Image, error) {
+	table := qb.table()
+	fileTable := fileTableMgr.table
+	folderTable := folderTableMgr.table
+
+	q := qb.selectDataset().
+		InnerJoin(
+			galleriesImagesJoinTable,
+			goqu.On(table.Col(idColumn).Eq(galleriesImagesJoinTable.Col(imageIDColumn))),
+		).
+		Where(galleriesImagesJoinTable.Col(galleryIDColumn).Eq(galleryID)).
+		Prepared(true).
+		Order(folderTable.Col("path").Asc(), fileTable.Col("basename").Asc()).
+		Limit(1).Offset(index)
+
+	ret, err := qb.getMany(ctx, q)
+	if err != nil {
+		return nil, fmt.Errorf("getting images for gallery %d: %w", galleryID, err)
+	}
+
+	if len(ret) == 0 {
+		return nil, nil
+	}
+
+	return ret[0], nil
+}
+
 func (qb *ImageStore) CountByGalleryID(ctx context.Context, galleryID int) (int, error) {
 	joinTable := goqu.T(galleriesImagesTable)
 

ui/v2.5/graphql/data/gallery-slim.graphql

@@ -48,4 +48,7 @@ fragment SlimGalleryData on Gallery {
   scenes {
     ...SlimSceneData
   }
+  paths {
+    preview
+  }
 }

ui/v2.5/graphql/data/gallery.graphql

@@ -11,6 +11,10 @@ fragment GalleryData on Gallery {
   rating100
   organized
 
+  paths {
+    preview
+  }
+
   files {
     ...GalleryFileData
   }
@@ -52,6 +56,9 @@ fragment SelectGalleryData on Gallery {
       thumbnail
     }
   }
+  paths {
+    preview
+  }
   files {
     path
   }

ui/v2.5/graphql/queries/gallery.graphql

@@ -28,3 +28,11 @@ query FindGalleriesForSelect(
     }
   }
 }
+
+query FindGalleryImageID($id: ID!, $index: Int!) {
+  findGallery(id: $id) {
+    image(index: $index) {
+      id
+    }
+  }
+}

ui/v2.5/src/components/Galleries/Galleries.tsx

@@ -1,5 +1,5 @@
 import React from "react";
-import { Route, Switch } from "react-router-dom";
+import { Redirect, Route, RouteComponentProps, Switch } from "react-router-dom";
 import { Helmet } from "react-helmet";
 import { useTitleProps } from "src/hooks/title";
 import Gallery from "./GalleryDetails/Gallery";
@@ -7,6 +7,38 @@ import GalleryCreate from "./GalleryDetails/GalleryCreate";
 import { GalleryList } from "./GalleryList";
 import { useScrollToTopOnMount } from "src/hooks/scrollToTop";
 import { View } from "../List/views";
+import { LoadingIndicator } from "../Shared/LoadingIndicator";
+import { ErrorMessage } from "../Shared/ErrorMessage";
+import { useFindGalleryImageID } from "src/core/StashService";
+
+interface IGalleryImageParams {
+  id: string;
+  index: string;
+}
+
+const GalleryImage: React.FC<RouteComponentProps<IGalleryImageParams>> = ({
+  match,
+}) => {
+  const { id, index: indexStr } = match.params;
+
+  let index = parseInt(indexStr);
+  if (isNaN(index)) {
+    index = 0;
+  }
+
+  const { data, loading, error } = useFindGalleryImageID(id, index);
+
+  if (isNaN(index)) {
+    return <Redirect to={`/galleries/${id}`} />;
+  }
+
+  if (loading) return <LoadingIndicator />;
+  if (error) return <ErrorMessage error={error.message} />;
+  if (!data?.findGallery)
+    return <ErrorMessage error={`No gallery found with id ${id}.`} />;
+
+  return <Redirect to={`/images/${data.findGallery.image.id}`} />;
+};
 
 const Galleries: React.FC = () => {
   useScrollToTopOnMount();
@@ -22,6 +54,11 @@ const GalleryRoutes: React.FC = () => {
       <Switch>
         <Route exact path="/galleries" component={Galleries} />
         <Route exact path="/galleries/new" component={GalleryCreate} />
+        <Route
+          exact
+          path="/galleries/:id/images/:index"
+          component={GalleryImage}
+        />
         <Route path="/galleries/:id/:tab?" component={Gallery} />
       </Switch>
     </>

ui/v2.5/src/components/Galleries/GalleryCard.tsx

@@ -14,6 +14,45 @@ import { faBox, faPlayCircle, faTag } from "@fortawesome/free-solid-svg-icons";
 import { galleryTitle } from "src/core/galleries";
 import ScreenUtils from "src/utils/screen";
 import { StudioOverlay } from "../Shared/GridCard/StudioOverlay";
+import { GalleryPreviewScrubber } from "./GalleryPreviewScrubber";
+import cx from "classnames";
+import { useHistory } from "react-router-dom";
+
+interface IScenePreviewProps {
+  isPortrait?: boolean;
+  gallery: GQL.SlimGalleryDataFragment;
+  onScrubberClick?: (index: number) => void;
+}
+
+export const GalleryPreview: React.FC<IScenePreviewProps> = ({
+  gallery,
+  isPortrait = false,
+  onScrubberClick,
+}) => {
+  const [imgSrc, setImgSrc] = useState<string | undefined>(
+    gallery.cover?.paths.thumbnail ?? undefined
+  );
+
+  return (
+    <div className={cx("gallery-card-cover", { portrait: isPortrait })}>
+      {!!imgSrc && (
+        <img
+          loading="lazy"
+          className="gallery-card-image"
+          alt={gallery.title ?? ""}
+          src={imgSrc}
+        />
+      )}
+      <GalleryPreviewScrubber
+        previewPath={gallery.paths.preview}
+        defaultPath={gallery.cover?.paths.thumbnail ?? ""}
+        imageCount={gallery.image_count}
+        onClick={onScrubberClick}
+        onPathChanged={setImgSrc}
+      />
+    </div>
+  );
+};
 
 interface IProps {
   gallery: GQL.SlimGalleryDataFragment;
@@ -25,6 +64,7 @@ interface IProps {
 }
 
 export const GalleryCard: React.FC<IProps> = (props) => {
+  const history = useHistory();
   const [cardWidth, setCardWidth] = useState<number>();
 
   useEffect(() => {
@@ -167,14 +207,13 @@ export const GalleryCard: React.FC<IProps> = (props) => {
       linkClassName="gallery-card-header"
       image={
         <>
-          {props.gallery.cover ? (
-            <img
-              loading="lazy"
-              className="gallery-card-image"
-              alt={props.gallery.title ?? ""}
-              src={`${props.gallery.cover.paths.thumbnail}`}
-            />
-          ) : undefined}
+          <GalleryPreview
+            gallery={props.gallery}
+            onScrubberClick={(i) => {
+              console.log(i);
+              history.push(`/galleries/${props.gallery.id}/images/${i}`);
+            }}
+          />
           <RatingBanner rating={props.gallery.rating100} />
         </>
       }

ui/v2.5/src/components/Galleries/GalleryPreviewScrubber.tsx

@@ -0,0 +1,54 @@
+import React, { useEffect, useState } from "react";
+import { useThrottle } from "src/hooks/throttle";
+import { HoverScrubber } from "../Shared/HoverScrubber";
+import cx from "classnames";
+
+export const GalleryPreviewScrubber: React.FC<{
+  className?: string;
+  previewPath: string;
+  defaultPath: string;
+  imageCount: number;
+  onClick?: (imageIndex: number) => void;
+  onPathChanged: React.Dispatch<React.SetStateAction<string | undefined>>;
+}> = ({
+  className,
+  previewPath,
+  defaultPath,
+  imageCount,
+  onClick,
+  onPathChanged,
+}) => {
+  const [activeIndex, setActiveIndex] = useState<number>();
+  const debounceSetActiveIndex = useThrottle(setActiveIndex, 50);
+
+  function onScrubberClick() {
+    if (activeIndex === undefined || !onClick) {
+      return;
+    }
+
+    onClick(activeIndex);
+  }
+
+  useEffect(() => {
+    function getPath() {
+      if (activeIndex === undefined) {
+        return defaultPath;
+      }
+
+      return `${previewPath}/${activeIndex}`;
+    }
+
+    onPathChanged(getPath());
+  }, [activeIndex, defaultPath, previewPath, onPathChanged]);
+
+  return (
+    <div className={cx("preview-scrubber", className)}>
+      <HoverScrubber
+        totalSprites={imageCount}
+        activeIndex={activeIndex}
+        setActiveIndex={(i) => debounceSetActiveIndex(i)}
+        onClick={() => onScrubberClick()}
+      />
+    </div>
+  );
+};

ui/v2.5/src/components/Galleries/styles.scss

@@ -102,6 +102,14 @@
     color: $text-color;
   }
 
+  &-cover {
+    position: relative;
+  }
+
+  .preview-scrubber {
+    top: 0;
+  }
+
   &-image {
     object-fit: contain;
   }

ui/v2.5/src/components/Scenes/PreviewScrubber.tsx

@@ -8,89 +8,7 @@ import React, {
 import { useSpriteInfo } from "src/hooks/sprite";
 import { useThrottle } from "src/hooks/throttle";
 import TextUtils from "src/utils/text";
-import cx from "classnames";
-
-interface IHoverScrubber {
-  totalSprites: number;
-  activeIndex: number | undefined;
-  setActiveIndex: (index: number | undefined) => void;
-  onClick?: () => void;
-}
-
-const HoverScrubber: React.FC<IHoverScrubber> = ({
-  totalSprites,
-  activeIndex,
-  setActiveIndex,
-  onClick,
-}) => {
-  function getActiveIndex(e: React.MouseEvent<HTMLDivElement, MouseEvent>) {
-    const { width } = e.currentTarget.getBoundingClientRect();
-    const x = e.nativeEvent.offsetX;
-
-    const i = Math.floor((x / width) * totalSprites);
-
-    // clamp to [0, totalSprites)
-    if (i < 0) return 0;
-    if (i >= totalSprites) return totalSprites - 1;
-    return i;
-  }
-
-  function onMouseMove(e: React.MouseEvent<HTMLDivElement, MouseEvent>) {
-    const relatedTarget = e.currentTarget;
-
-    if (relatedTarget !== e.target) return;
-
-    setActiveIndex(getActiveIndex(e));
-  }
-
-  function onMouseLeave() {
-    setActiveIndex(undefined);
-  }
-
-  function onScrubberClick(e: React.MouseEvent<HTMLDivElement, MouseEvent>) {
-    if (!onClick) return;
-
-    const relatedTarget = e.currentTarget;
-
-    if (relatedTarget !== e.target) return;
-
-    e.preventDefault();
-    onClick();
-  }
-
-  const indicatorStyle = useMemo(() => {
-    if (activeIndex === undefined || !totalSprites) return {};
-
-    const width = (activeIndex / totalSprites) * 100;
-
-    return {
-      width: `${width}%`,
-    };
-  }, [activeIndex, totalSprites]);
-
-  return (
-    <div
-      className={cx("hover-scrubber", {
-        "hover-scrubber-inactive": !totalSprites,
-      })}
-    >
-      <div
-        className="hover-scrubber-area"
-        onMouseMove={onMouseMove}
-        onMouseLeave={onMouseLeave}
-        onClick={onScrubberClick}
-      />
-      <div className="hover-scrubber-indicator">
-        {activeIndex !== undefined && (
-          <div
-            className="hover-scrubber-indicator-marker"
-            style={indicatorStyle}
-          ></div>
-        )}
-      </div>
-    </div>
-  );
-};
+import { HoverScrubber } from "../Shared/HoverScrubber";
 
 interface IScenePreviewProps {
   vttPath: string | undefined;

ui/v2.5/src/components/Shared/HoverScrubber.tsx

@@ -0,0 +1,84 @@
+import React, { useMemo } from "react";
+import cx from "classnames";
+
+interface IHoverScrubber {
+  totalSprites: number;
+  activeIndex: number | undefined;
+  setActiveIndex: (index: number | undefined) => void;
+  onClick?: () => void;
+}
+
+export const HoverScrubber: React.FC<IHoverScrubber> = ({
+  totalSprites,
+  activeIndex,
+  setActiveIndex,
+  onClick,
+}) => {
+  function getActiveIndex(e: React.MouseEvent<HTMLDivElement, MouseEvent>) {
+    const { width } = e.currentTarget.getBoundingClientRect();
+    const x = e.nativeEvent.offsetX;
+
+    const i = Math.round((x / width) * (totalSprites - 1));
+
+    // clamp to [0, totalSprites)
+    if (i < 0) return 0;
+    if (i >= totalSprites) return totalSprites - 1;
+    return i;
+  }
+
+  function onMouseMove(e: React.MouseEvent<HTMLDivElement, MouseEvent>) {
+    const relatedTarget = e.currentTarget;
+
+    if (relatedTarget !== e.target) return;
+
+    setActiveIndex(getActiveIndex(e));
+  }
+
+  function onMouseLeave() {
+    setActiveIndex(undefined);
+  }
+
+  function onScrubberClick(e: React.MouseEvent<HTMLDivElement, MouseEvent>) {
+    if (!onClick) return;
+
+    const relatedTarget = e.currentTarget;
+
+    if (relatedTarget !== e.target) return;
+
+    e.preventDefault();
+    onClick();
+  }
+
+  const indicatorStyle = useMemo(() => {
+    if (activeIndex === undefined || !totalSprites) return {};
+
+    const width = ((activeIndex + 1) / totalSprites) * 100;
+
+    return {
+      width: `${width}%`,
+    };
+  }, [activeIndex, totalSprites]);
+
+  return (
+    <div
+      className={cx("hover-scrubber", {
+        "hover-scrubber-inactive": !totalSprites,
+      })}
+    >
+      <div
+        className="hover-scrubber-area"
+        onMouseMove={onMouseMove}
+        onMouseLeave={onMouseLeave}
+        onClick={onScrubberClick}
+      />
+      <div className="hover-scrubber-indicator">
+        {activeIndex !== undefined && (
+          <div
+            className="hover-scrubber-indicator-marker"
+            style={indicatorStyle}
+          ></div>
+        )}
+      </div>
+    </div>
+  );
+};

ui/v2.5/src/core/StashService.ts

@@ -275,6 +275,10 @@ export const useFindGallery = (id: string) => {
   return GQL.useFindGalleryQuery({ variables: { id }, skip });
 };
 
+export const useFindGalleryImageID = (id: string, index: number) => {
+  return GQL.useFindGalleryImageIdQuery({ variables: { id, index } });
+};
+
 export const useFindGalleries = (filter?: ListFilterModel) =>
   GQL.useFindGalleriesQuery({
     skip: filter === undefined,

ui/v2.5/src/index.scss

@@ -500,7 +500,7 @@ textarea.text-input {
 .zoom-0 {
   .gallery-card-image,
   .tag-card-image {
-    max-height: 180px;
+    height: 180px;
   }
 }
 
@@ -509,7 +509,7 @@ textarea.text-input {
 
   .gallery-card-image,
   .tag-card-image {
-    max-height: 240px;
+    height: 240px;
   }
 
   .image-card-preview {
@@ -520,7 +520,7 @@ textarea.text-input {
 .zoom-2 {
   .gallery-card-image,
   .tag-card-image {
-    max-height: 360px;
+    height: 360px;
   }
 
   .image-card-preview {
@@ -531,7 +531,7 @@ textarea.text-input {
 .zoom-3 {
   .tag-card-image,
   .gallery-card-image {
-    max-height: 480px;
+    height: 480px;
   }
 
   .image-card-preview {