feat(core): pdf embed view component (#8671)

Closes: [AF-1445](https://linear.app/affine-design/issue/AF-1445/添加-pdf-embed-view-component)
Upstreams: https://github.com/toeverything/blocksuite/pull/8658, https://github.com/toeverything/blocksuite/pull/8752

### What's Changed

* uses `IntersectionObserver` to determine lazy loading
* adds `PDFViewerEmbedded` component
* automatically shut down workers when out of view

<div class='graphite__hidden'>
          <div>🎥 Video uploaded on Graphite:</div>
            <a href="https://app.graphite.dev/media/video/8ypiIKZXudF5a0tIgIzf/4181bec6-83fd-42f1-bfea-87276e0bd9e6.mov">
              <img src="https://app.graphite.dev/api/v1/graphite/video/thumbnail/8ypiIKZXudF5a0tIgIzf/4181bec6-83fd-42f1-bfea-87276e0bd9e6.mov">
            </a>
          </div>
<video src="https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/8ypiIKZXudF5a0tIgIzf/4181bec6-83fd-42f1-bfea-87276e0bd9e6.mov">Screen Recording 2024-11-15 at 08.14.34.mov</video>

packages/frontend/core/src/components/attachment-viewer/index.tsx

@@ -2,7 +2,7 @@ import { ViewBody, ViewHeader } from '@affine/core/modules/workbench';
 import type { AttachmentBlockModel } from '@blocksuite/affine/blocks';
 
 import { AttachmentPreviewErrorBoundary, Error } from './error';
-import { PDFViewer } from './pdf-viewer';
+import { PDFViewer, type PDFViewerProps } from './pdf-viewer';
 import * as styles from './styles.css';
 import { Titlebar } from './titlebar';
 import { buildAttachmentProps } from './utils';
@@ -18,13 +18,7 @@ export const AttachmentViewer = ({ model }: AttachmentViewerProps) => {
   return (
     <div className={styles.viewerContainer}>
       <Titlebar {...props} />
-      {model.type.endsWith('pdf') ? (
-        <AttachmentPreviewErrorBoundary>
-          <PDFViewer {...props} />
-        </AttachmentPreviewErrorBoundary>
-      ) : (
-        <Error {...props} />
-      )}
+      <AttachmentViewerInner {...props} />
     </div>
   );
 };
@@ -39,14 +33,18 @@ export const AttachmentViewerView = ({ model }: AttachmentViewerProps) => {
         <Titlebar {...props} />
       </ViewHeader>
       <ViewBody>
-        {model.type.endsWith('pdf') ? (
-          <AttachmentPreviewErrorBoundary>
-            <PDFViewer {...props} />
-          </AttachmentPreviewErrorBoundary>
-        ) : (
-          <Error {...props} />
-        )}
+        <AttachmentViewerInner {...props} />
       </ViewBody>
     </>
   );
 };
+
+const AttachmentViewerInner = (props: PDFViewerProps) => {
+  return props.model.type.endsWith('pdf') ? (
+    <AttachmentPreviewErrorBoundary>
+      <PDFViewer {...props} />
+    </AttachmentPreviewErrorBoundary>
+  ) : (
+    <Error {...props} />
+  );
+};

packages/frontend/core/src/components/attachment-viewer/pdf-viewer-embedded-inner.tsx

@@ -0,0 +1,249 @@
+import { IconButton, observeIntersection } from '@affine/component';
+import {
+  type PDF,
+  type PDFPage,
+  PDFService,
+  PDFStatus,
+} from '@affine/core/modules/pdf';
+import { LoadingSvg, PDFPageCanvas } from '@affine/core/modules/pdf/views';
+import { PeekViewService } from '@affine/core/modules/peek-view';
+import { stopPropagation } from '@affine/core/utils';
+import {
+  ArrowDownSmallIcon,
+  ArrowUpSmallIcon,
+  AttachmentIcon,
+  CenterPeekIcon,
+} from '@blocksuite/icons/rc';
+import { LiveData, useLiveData, useService } from '@toeverything/infra';
+import clsx from 'clsx';
+import { debounce } from 'lodash-es';
+import {
+  type MouseEvent,
+  useCallback,
+  useEffect,
+  useMemo,
+  useRef,
+  useState,
+} from 'react';
+
+import type { PDFViewerProps } from './pdf-viewer';
+import * as styles from './styles.css';
+import * as embeddedStyles from './styles.embedded.css';
+
+type PDFViewerEmbeddedInnerProps = PDFViewerProps;
+
+export function PDFViewerEmbeddedInner({ model }: PDFViewerEmbeddedInnerProps) {
+  const peekView = useService(PeekViewService).peekView;
+  const pdfService = useService(PDFService);
+  const [pdfEntity, setPdfEntity] = useState<{
+    pdf: PDF;
+    release: () => void;
+  } | null>(null);
+  const [pageEntity, setPageEntity] = useState<{
+    page: PDFPage;
+    release: () => void;
+  } | null>(null);
+
+  const meta = useLiveData(
+    useMemo(() => {
+      return pdfEntity
+        ? pdfEntity.pdf.state$.map(s => {
+            return s.status === PDFStatus.Opened
+              ? s.meta
+              : { pageCount: 0, width: 0, height: 0 };
+          })
+        : new LiveData({ pageCount: 0, width: 0, height: 0 });
+    }, [pdfEntity])
+  );
+  const img = useLiveData(
+    useMemo(() => {
+      return pageEntity ? pageEntity.page.bitmap$ : null;
+    }, [pageEntity])
+  );
+
+  const [isLoading, setIsLoading] = useState(true);
+  const [cursor, setCursor] = useState(0);
+  const viewerRef = useRef<HTMLDivElement>(null);
+  const [visibility, setVisibility] = useState(false);
+  const canvasRef = useRef<HTMLCanvasElement>(null);
+
+  const peek = useCallback(() => {
+    const target = model.doc.getBlock(model.id);
+    if (!target) return;
+    peekView.open({ element: target }).catch(console.error);
+  }, [peekView, model]);
+
+  const navigator = useMemo(() => {
+    const p = cursor - 1;
+    const n = cursor + 1;
+
+    return {
+      prev: {
+        disabled: p < 0,
+        onClick: (e: MouseEvent) => {
+          e.stopPropagation();
+          setCursor(p);
+        },
+      },
+      next: {
+        disabled: n >= meta.pageCount,
+        onClick: (e: MouseEvent) => {
+          e.stopPropagation();
+          setCursor(n);
+        },
+      },
+      peek: {
+        onClick: (e: MouseEvent) => {
+          e.stopPropagation();
+          peek();
+        },
+      },
+    };
+  }, [cursor, meta, peek]);
+
+  useEffect(() => {
+    const canvas = canvasRef.current;
+    if (!canvas) return;
+    if (!img) return;
+    const ctx = canvas.getContext('2d');
+    if (!ctx) return;
+    const { width, height } = meta;
+    if (width * height === 0) return;
+
+    setIsLoading(false);
+
+    canvas.width = width * 2;
+    canvas.height = height * 2;
+    ctx.clearRect(0, 0, canvas.width, canvas.height);
+    ctx.drawImage(img, 0, 0);
+  }, [img, meta]);
+
+  useEffect(() => {
+    if (!visibility) return;
+    if (!pageEntity) return;
+
+    const { width, height } = meta;
+    if (width * height === 0) return;
+
+    pageEntity.page.render({ width, height, scale: 2 });
+
+    return () => {
+      pageEntity.page.render.unsubscribe();
+    };
+  }, [visibility, pageEntity, meta]);
+
+  useEffect(() => {
+    if (!visibility) return;
+    if (!pdfEntity) return;
+
+    const { width, height } = meta;
+    if (width * height === 0) return;
+
+    const pageEntity = pdfEntity.pdf.page(cursor, `${width}:${height}:2`);
+
+    setPageEntity(pageEntity);
+
+    return () => {
+      pageEntity.release();
+      setPageEntity(null);
+    };
+  }, [visibility, pdfEntity, cursor, meta]);
+
+  useEffect(() => {
+    if (!visibility) return;
+
+    const pdfEntity = pdfService.get(model);
+
+    setPdfEntity(pdfEntity);
+
+    return () => {
+      pdfEntity.release();
+      setPdfEntity(null);
+    };
+  }, [model, pdfService, visibility]);
+
+  useEffect(() => {
+    const viewer = viewerRef.current;
+    if (!viewer) return;
+
+    return observeIntersection(
+      viewer,
+      debounce(
+        entry => {
+          setVisibility(entry.isIntersecting);
+        },
+        377,
+        {
+          trailing: true,
+        }
+      )
+    );
+  }, []);
+
+  return (
+    <div ref={viewerRef} className={embeddedStyles.pdfContainer}>
+      <main className={embeddedStyles.pdfViewer}>
+        <div
+          className={styles.pdfPage}
+          style={{
+            position: 'relative',
+            display: 'flex',
+            justifyContent: 'center',
+            alignItems: 'center',
+            width: '100%',
+            minHeight: '759px',
+          }}
+        >
+          <PDFPageCanvas ref={canvasRef} />
+          <LoadingSvg
+            style={{
+              position: 'absolute',
+              visibility: isLoading ? 'visible' : 'hidden',
+            }}
+          />
+        </div>
+
+        <div className={embeddedStyles.pdfControls}>
+          <IconButton
+            size={16}
+            icon={<ArrowUpSmallIcon />}
+            className={embeddedStyles.pdfControlButton}
+            onDoubleClick={stopPropagation}
+            {...navigator.prev}
+          />
+          <IconButton
+            size={16}
+            icon={<ArrowDownSmallIcon />}
+            className={embeddedStyles.pdfControlButton}
+            onDoubleClick={stopPropagation}
+            {...navigator.next}
+          />
+          <IconButton
+            size={16}
+            icon={<CenterPeekIcon />}
+            className={embeddedStyles.pdfControlButton}
+            onDoubleClick={stopPropagation}
+            {...navigator.peek}
+          />
+        </div>
+      </main>
+      <footer className={embeddedStyles.pdfFooter}>
+        <div
+          className={clsx([embeddedStyles.pdfFooterItem, { truncate: true }])}
+        >
+          <AttachmentIcon />
+          <span className={embeddedStyles.pdfTitle}>{model.name}</span>
+        </div>
+        <div
+          className={clsx([
+            embeddedStyles.pdfFooterItem,
+            embeddedStyles.pdfPageCount,
+          ])}
+        >
+          <span>{meta.pageCount > 0 ? cursor + 1 : '-'}</span>/
+          <span>{meta.pageCount > 0 ? meta.pageCount : '-'}</span>
+        </div>
+      </footer>
+    </div>
+  );
+}

packages/frontend/core/src/components/attachment-viewer/pdf-viewer-embedded.tsx

@@ -0,0 +1,14 @@
+import type { AttachmentBlockModel } from '@blocksuite/affine/blocks';
+
+import { PDFViewerEmbeddedInner } from './pdf-viewer-embedded-inner';
+
+export interface PDFViewerEmbeddedProps {
+  model: AttachmentBlockModel;
+  name: string;
+  ext: string;
+  size: string;
+}
+
+export function PDFViewerEmbedded(props: PDFViewerEmbeddedProps) {
+  return <PDFViewerEmbeddedInner {...props} />;
+}

packages/frontend/core/src/components/attachment-viewer/pdf-viewer-inner.tsx

@@ -0,0 +1,197 @@
+import { IconButton, observeResize } from '@affine/component';
+import type {
+  PDF,
+  PDFRendererState,
+  PDFStatus,
+} from '@affine/core/modules/pdf';
+import {
+  Item,
+  List,
+  ListPadding,
+  ListWithSmallGap,
+  PDFPageRenderer,
+  type PDFVirtuosoContext,
+  type PDFVirtuosoProps,
+  Scroller,
+  ScrollSeekPlaceholder,
+} from '@affine/core/modules/pdf/views';
+import { CollapseIcon, ExpandIcon } from '@blocksuite/icons/rc';
+import clsx from 'clsx';
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import {
+  type ScrollSeekConfiguration,
+  Virtuoso,
+  type VirtuosoHandle,
+} from 'react-virtuoso';
+
+import * as styles from './styles.css';
+import { calculatePageNum } from './utils';
+
+const THUMBNAIL_WIDTH = 94;
+
+export interface PDFViewerInnerProps {
+  pdf: PDF;
+  state: Extract<PDFRendererState, { status: PDFStatus.Opened }>;
+}
+
+export const PDFViewerInner = ({ pdf, state }: PDFViewerInnerProps) => {
+  const [cursor, setCursor] = useState(0);
+  const [collapsed, setCollapsed] = useState(true);
+  const [viewportInfo, setViewportInfo] = useState({ width: 0, height: 0 });
+
+  const viewerRef = useRef<HTMLDivElement>(null);
+  const pagesScrollerRef = useRef<HTMLElement | null>(null);
+  const pagesScrollerHandleRef = useRef<VirtuosoHandle>(null);
+  const thumbnailsScrollerHandleRef = useRef<VirtuosoHandle>(null);
+
+  const updateScrollerRef = useCallback(
+    (scroller: HTMLElement | Window | null) => {
+      pagesScrollerRef.current = scroller as HTMLElement;
+    },
+    []
+  );
+
+  const onScroll = useCallback(() => {
+    const el = pagesScrollerRef.current;
+    if (!el) return;
+
+    const { pageCount } = state.meta;
+    if (!pageCount) return;
+
+    const cursor = calculatePageNum(el, pageCount);
+
+    setCursor(cursor);
+  }, [pagesScrollerRef, state]);
+
+  const onPageSelect = useCallback(
+    (index: number) => {
+      const scroller = pagesScrollerHandleRef.current;
+      if (!scroller) return;
+
+      scroller.scrollToIndex({
+        index,
+        align: 'center',
+        behavior: 'smooth',
+      });
+    },
+    [pagesScrollerHandleRef]
+  );
+
+  const pageContent = useCallback(
+    (
+      index: number,
+      _: unknown,
+      { width, height, onPageSelect, pageClassName }: PDFVirtuosoContext
+    ) => {
+      return (
+        <PDFPageRenderer
+          key={index}
+          pdf={pdf}
+          width={width}
+          height={height}
+          pageNum={index}
+          onSelect={onPageSelect}
+          className={pageClassName}
+        />
+      );
+    },
+    [pdf]
+  );
+
+  const thumbnailsConfig = useMemo(() => {
+    const { height: vh } = viewportInfo;
+    const { pageCount: t, height: h, width: w } = state.meta;
+    const p = h / (w || 1);
+    const pw = THUMBNAIL_WIDTH;
+    const ph = Math.ceil(pw * p);
+    const height = Math.min(vh - 60 - 24 - 24 - 2 - 8, t * ph + (t - 1) * 12);
+    return {
+      context: {
+        width: pw,
+        height: ph,
+        onPageSelect,
+        pageClassName: styles.pdfThumbnail,
+      },
+      style: { height },
+    };
+  }, [state, viewportInfo, onPageSelect]);
+
+  const scrollSeekConfig = useMemo<ScrollSeekConfiguration>(() => {
+    return {
+      enter: velocity => Math.abs(velocity) > 1024,
+      exit: velocity => Math.abs(velocity) < 10,
+    };
+  }, []);
+
+  useEffect(() => {
+    const viewer = viewerRef.current;
+    if (!viewer) return;
+    return observeResize(viewer, ({ contentRect: { width, height } }) =>
+      setViewportInfo({ width, height })
+    );
+  }, []);
+
+  return (
+    <div
+      ref={viewerRef}
+      data-testid="pdf-viewer"
+      className={clsx([styles.viewer, { gridding: true, scrollable: true }])}
+    >
+      <Virtuoso<PDFVirtuosoProps>
+        key={pdf.id}
+        ref={pagesScrollerHandleRef}
+        scrollerRef={updateScrollerRef}
+        onScroll={onScroll}
+        className={styles.virtuoso}
+        totalCount={state.meta.pageCount}
+        itemContent={pageContent}
+        components={{
+          Item,
+          List,
+          Scroller,
+          Header: ListPadding,
+          Footer: ListPadding,
+          ScrollSeekPlaceholder,
+        }}
+        context={{
+          width: state.meta.width,
+          height: state.meta.height,
+          pageClassName: styles.pdfPage,
+        }}
+        scrollSeekConfiguration={scrollSeekConfig}
+      />
+      <div className={clsx(['thumbnails', styles.pdfThumbnails])}>
+        <div className={clsx([styles.pdfThumbnailsList, { collapsed }])}>
+          <Virtuoso<PDFVirtuosoProps>
+            key={`${pdf.id}-thumbnail`}
+            ref={thumbnailsScrollerHandleRef}
+            className={styles.virtuoso}
+            totalCount={state.meta.pageCount}
+            itemContent={pageContent}
+            components={{
+              Item,
+              List: ListWithSmallGap,
+              Scroller,
+              ScrollSeekPlaceholder,
+            }}
+            scrollSeekConfiguration={scrollSeekConfig}
+            style={thumbnailsConfig.style}
+            context={thumbnailsConfig.context}
+          />
+        </div>
+        <div className={clsx(['indicator', styles.pdfIndicator])}>
+          <div>
+            <span className="page-cursor">
+              {state.meta.pageCount > 0 ? cursor + 1 : 0}
+            </span>
+            /<span className="page-count">{state.meta.pageCount}</span>
+          </div>
+          <IconButton
+            icon={collapsed ? <CollapseIcon /> : <ExpandIcon />}
+            onClick={() => setCollapsed(!collapsed)}
+          />
+        </div>
+      </div>
+    </div>
+  );
+};

packages/frontend/core/src/components/attachment-viewer/pdf-viewer.tsx

@@ -1,206 +1,13 @@
-import { IconButton, observeResize } from '@affine/component';
-import {
-  type PDF,
-  type PDFRendererState,
-  PDFService,
-  PDFStatus,
-} from '@affine/core/modules/pdf';
-import {
-  Item,
-  List,
-  ListPadding,
-  ListWithSmallGap,
-  LoadingSvg,
-  PDFPageRenderer,
-  type PDFVirtuosoContext,
-  type PDFVirtuosoProps,
-  Scroller,
-  ScrollSeekPlaceholder,
-} from '@affine/core/modules/pdf/views';
+import { type PDF, PDFService, PDFStatus } from '@affine/core/modules/pdf';
+import { LoadingSvg } from '@affine/core/modules/pdf/views';
 import track from '@affine/track';
 import type { AttachmentBlockModel } from '@blocksuite/affine/blocks';
-import { CollapseIcon, ExpandIcon } from '@blocksuite/icons/rc';
 import { useLiveData, useService } from '@toeverything/infra';
-import clsx from 'clsx';
-import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
-import {
-  type ScrollSeekConfiguration,
-  Virtuoso,
-  type VirtuosoHandle,
-} from 'react-virtuoso';
+import { useEffect, useState } from 'react';
 
-import * as styles from './styles.css';
-import { calculatePageNum } from './utils';
+import { PDFViewerInner } from './pdf-viewer-inner';
 
-const THUMBNAIL_WIDTH = 94;
-
-interface ViewerProps {
-  model: AttachmentBlockModel;
-}
-
-interface PDFViewerInnerProps {
-  pdf: PDF;
-  state: Extract<PDFRendererState, { status: PDFStatus.Opened }>;
-}
-
-const PDFViewerInner = ({ pdf, state }: PDFViewerInnerProps) => {
-  const [cursor, setCursor] = useState(0);
-  const [collapsed, setCollapsed] = useState(true);
-  const [viewportInfo, setViewportInfo] = useState({ width: 0, height: 0 });
-
-  const viewerRef = useRef<HTMLDivElement>(null);
-  const pagesScrollerRef = useRef<HTMLElement | null>(null);
-  const pagesScrollerHandleRef = useRef<VirtuosoHandle>(null);
-  const thumbnailsScrollerHandleRef = useRef<VirtuosoHandle>(null);
-
-  const onScroll = useCallback(() => {
-    const el = pagesScrollerRef.current;
-    if (!el) return;
-
-    const { pageCount } = state.meta;
-    if (!pageCount) return;
-
-    const cursor = calculatePageNum(el, pageCount);
-
-    setCursor(cursor);
-  }, [pagesScrollerRef, state]);
-
-  const onPageSelect = useCallback(
-    (index: number) => {
-      const scroller = pagesScrollerHandleRef.current;
-      if (!scroller) return;
-
-      scroller.scrollToIndex({
-        index,
-        align: 'center',
-        behavior: 'smooth',
-      });
-    },
-    [pagesScrollerHandleRef]
-  );
-
-  const pageContent = useCallback(
-    (
-      index: number,
-      _: unknown,
-      { width, height, onPageSelect, pageClassName }: PDFVirtuosoContext
-    ) => {
-      return (
-        <PDFPageRenderer
-          key={index}
-          pdf={pdf}
-          width={width}
-          height={height}
-          pageNum={index}
-          onSelect={onPageSelect}
-          className={pageClassName}
-        />
-      );
-    },
-    [pdf]
-  );
-
-  const thumbnailsConfig = useMemo(() => {
-    const { height: vh } = viewportInfo;
-    const { pageCount: t, height: h, width: w } = state.meta;
-    const p = h / (w || 1);
-    const pw = THUMBNAIL_WIDTH;
-    const ph = Math.ceil(pw * p);
-    const height = Math.min(vh - 60 - 24 - 24 - 2 - 8, t * ph + (t - 1) * 12);
-    return {
-      context: {
-        width: pw,
-        height: ph,
-        onPageSelect,
-        pageClassName: styles.pdfThumbnail,
-      },
-      style: { height },
-    };
-  }, [state, viewportInfo, onPageSelect]);
-
-  const scrollSeekConfig = useMemo<ScrollSeekConfiguration>(() => {
-    return {
-      enter: velocity => Math.abs(velocity) > 1024,
-      exit: velocity => Math.abs(velocity) < 10,
-    };
-  }, []);
-
-  useEffect(() => {
-    const viewer = viewerRef.current;
-    if (!viewer) return;
-    return observeResize(viewer, ({ contentRect: { width, height } }) =>
-      setViewportInfo({ width, height })
-    );
-  }, []);
-
-  return (
-    <div
-      ref={viewerRef}
-      data-testid="pdf-viewer"
-      className={clsx([styles.viewer, { gridding: true, scrollable: true }])}
-    >
-      <Virtuoso<PDFVirtuosoProps>
-        key={pdf.id}
-        ref={pagesScrollerHandleRef}
-        scrollerRef={scroller => {
-          pagesScrollerRef.current = scroller as HTMLElement;
-        }}
-        onScroll={onScroll}
-        className={styles.virtuoso}
-        totalCount={state.meta.pageCount}
-        itemContent={pageContent}
-        components={{
-          Item,
-          List,
-          Scroller,
-          Header: ListPadding,
-          Footer: ListPadding,
-          ScrollSeekPlaceholder,
-        }}
-        context={{
-          width: state.meta.width,
-          height: state.meta.height,
-          pageClassName: styles.pdfPage,
-        }}
-        scrollSeekConfiguration={scrollSeekConfig}
-      />
-      <div className={clsx(['thumbnails', styles.pdfThumbnails])}>
-        <div className={clsx([styles.pdfThumbnailsList, { collapsed }])}>
-          <Virtuoso<PDFVirtuosoProps>
-            key={`${pdf.id}-thumbnail`}
-            ref={thumbnailsScrollerHandleRef}
-            className={styles.virtuoso}
-            totalCount={state.meta.pageCount}
-            itemContent={pageContent}
-            components={{
-              Item,
-              List: ListWithSmallGap,
-              Scroller,
-              ScrollSeekPlaceholder,
-            }}
-            scrollSeekConfiguration={scrollSeekConfig}
-            style={thumbnailsConfig.style}
-            context={thumbnailsConfig.context}
-          />
-        </div>
-        <div className={clsx(['indicator', styles.pdfIndicator])}>
-          <div>
-            <span className="page-cursor">
-              {state.meta.pageCount > 0 ? cursor + 1 : 0}
-            </span>
-            /<span className="page-count">{state.meta.pageCount}</span>
-          </div>
-          <IconButton
-            icon={collapsed ? <CollapseIcon /> : <ExpandIcon />}
-            onClick={() => setCollapsed(!collapsed)}
-          />
-        </div>
-      </div>
-    </div>
-  );
-};
-
-function PDFViewerStatus({ pdf }: { pdf: PDF }) {
+function PDFViewerStatus({ pdf, ...props }: PDFViewerProps & { pdf: PDF }) {
   const state = useLiveData(pdf.state$);
 
   useEffect(() => {
@@ -213,10 +20,17 @@ function PDFViewerStatus({ pdf }: { pdf: PDF }) {
     return <LoadingSvg />;
   }
 
-  return <PDFViewerInner pdf={pdf} state={state} />;
+  return <PDFViewerInner {...props} pdf={pdf} state={state} />;
 }
 
-export function PDFViewer({ model }: ViewerProps) {
+export interface PDFViewerProps {
+  model: AttachmentBlockModel;
+  name: string;
+  ext: string;
+  size: string;
+}
+
+export function PDFViewer({ model, ...props }: PDFViewerProps) {
   const pdfService = useService(PDFService);
   const [pdf, setPdf] = useState<PDF | null>(null);
 
@@ -231,5 +45,5 @@ export function PDFViewer({ model }: ViewerProps) {
     return <LoadingSvg />;
   }
 
-  return <PDFViewerStatus pdf={pdf} />;
+  return <PDFViewerStatus {...props} model={model} pdf={pdf} />;
 }

packages/frontend/core/src/components/attachment-viewer/styles.css.ts

@@ -49,6 +49,10 @@ export const titlebarName = style({
   wordWrap: 'break-word',
 });
 
+export const virtuoso = style({
+  width: '100%',
+});
+
 export const error = style({
   flexDirection: 'column',
   alignItems: 'center',
@@ -106,10 +110,6 @@ export const viewer = style({
   },
 });
 
-export const virtuoso = style({
-  width: '100%',
-});
-
 export const pdfIndicator = style({
   display: 'flex',
   alignItems: 'center',
@@ -127,6 +127,7 @@ export const pdfPage = style({
   boxShadow:
     '0px 4px 20px 0px var(--transparent-black-200, rgba(0, 0, 0, 0.10))',
   overflow: 'hidden',
+  maxHeight: 'max-content',
 });
 
 export const pdfThumbnails = style({
@@ -156,7 +157,6 @@ export const pdfThumbnailsList = style({
   flexDirection: 'column',
   maxHeight: '100%',
   overflow: 'hidden',
-  resize: 'both',
   selectors: {
     '&.collapsed': {
       display: 'none',

packages/frontend/core/src/components/attachment-viewer/styles.embedded.css.ts

@@ -0,0 +1,88 @@
+import { cssVar } from '@toeverything/theme';
+import { cssVarV2 } from '@toeverything/theme/v2';
+import { style } from '@vanilla-extract/css';
+
+export const pdfContainer = style({
+  width: '100%',
+  borderRadius: '8px',
+  borderWidth: '1px',
+  borderStyle: 'solid',
+  borderColor: cssVarV2('layer/insideBorder/border'),
+  background: cssVar('--affine-background-primary-color'),
+  userSelect: 'none',
+  contentVisibility: 'visible',
+});
+
+export const pdfViewer = style({
+  position: 'relative',
+  display: 'flex',
+  alignItems: 'center',
+  justifyContent: 'center',
+  padding: '12px',
+  overflow: 'hidden',
+  background: cssVarV2('layer/background/secondary'),
+});
+
+export const pdfPlaceholder = style({
+  position: 'absolute',
+  maxWidth: 'calc(100% - 24px)',
+  overflow: 'hidden',
+  height: 'auto',
+  pointerEvents: 'none',
+});
+
+export const pdfControls = style({
+  position: 'absolute',
+  bottom: '16px',
+  right: '14px',
+  display: 'flex',
+  flexDirection: 'column',
+  gap: '10px',
+});
+
+export const pdfControlButton = style({
+  width: '36px',
+  height: '36px',
+  borderWidth: '1px',
+  borderStyle: 'solid',
+  borderColor: cssVar('--affine-border-color'),
+  background: cssVar('--affine-white'),
+});
+
+export const pdfFooter = style({
+  display: 'flex',
+  alignItems: 'center',
+  flexDirection: 'row',
+  justifyContent: 'space-between',
+  gap: '12px',
+  padding: '12px',
+  textWrap: 'nowrap',
+});
+
+export const pdfFooterItem = style({
+  display: 'flex',
+  alignItems: 'center',
+  selectors: {
+    '&.truncate': {
+      overflow: 'hidden',
+    },
+  },
+});
+
+export const pdfTitle = style({
+  marginLeft: '8px',
+  fontSize: '14px',
+  fontWeight: 600,
+  lineHeight: '22px',
+  color: cssVarV2('text/primary'),
+  overflow: 'hidden',
+  textOverflow: 'ellipsis',
+  whiteSpace: 'nowrap',
+});
+
+export const pdfPageCount = style({
+  fontSize: '12px',
+  fontWeight: 400,
+  lineHeight: '20px',
+  color: cssVarV2('text/secondary'),
+});

packages/frontend/core/src/components/attachment-viewer/utils.ts

@@ -2,6 +2,7 @@ import type { AttachmentBlockModel } from '@blocksuite/affine/blocks';
 import { filesize } from 'filesize';
 
 import { downloadBlob } from '../../utils/resource';
+import type { PDFViewerProps } from './pdf-viewer';
 
 export async function getAttachmentBlob(model: AttachmentBlockModel) {
   const sourceId = model.sourceId;
@@ -26,7 +27,9 @@ export async function download(model: AttachmentBlockModel) {
   await downloadBlob(blob, model.name);
 }
 
-export function buildAttachmentProps(model: AttachmentBlockModel) {
+export function buildAttachmentProps(
+  model: AttachmentBlockModel
+): PDFViewerProps {
   const pieces = model.name.split('.');
   const ext = pieces.pop() || '';
   const name = pieces.join('.');

packages/frontend/core/src/components/blocksuite/block-suite-editor/lit-adaper.tsx

@@ -53,6 +53,7 @@ import {
   patchDocModeService,
   patchEdgelessClipboard,
   patchEmbedLinkedDocBlockConfig,
+  patchForAttachmentEmbedViews,
   patchForMobile,
   patchForSharedPage,
   patchGenerateDocUrlExtension,
@@ -148,6 +149,7 @@ const usePatchSpecs = (shared: boolean, mode: DocMode) => {
     let patched = specs.concat(
       patchReferenceRenderer(reactToLit, referenceRenderer)
     );
+    patched = patched.concat(patchForAttachmentEmbedViews(reactToLit));
     patched = patched.concat(patchNotificationService(confirmModal));
     patched = patched.concat(patchPeekViewService(peekViewService));
     patched = patched.concat(patchEdgelessClipboard());

packages/frontend/core/src/components/blocksuite/block-suite-editor/specs/custom/spec-patchers.tsx

@@ -7,6 +7,9 @@ import {
   toReactNode,
   type useConfirmModal,
 } from '@affine/component';
+import { AttachmentPreviewErrorBoundary } from '@affine/core/components/attachment-viewer/error';
+import { PDFViewerEmbedded } from '@affine/core/components/attachment-viewer/pdf-viewer-embedded';
+import { buildAttachmentProps } from '@affine/core/components/attachment-viewer/utils';
 import { WorkspaceServerService } from '@affine/core/modules/cloud';
 import { type DocService, DocsService } from '@affine/core/modules/doc';
 import type { EditorService } from '@affine/core/modules/editor';
@@ -47,6 +50,7 @@ import type {
 } from '@blocksuite/affine/blocks';
 import {
   AffineSlashMenuWidget,
+  AttachmentEmbedConfigIdentifier,
   DocModeExtension,
   EdgelessRootBlockComponent,
   EmbedLinkedDocBlockComponent,
@@ -59,6 +63,7 @@ import {
   QuickSearchExtension,
   ReferenceNodeConfigExtension,
 } from '@blocksuite/affine/blocks';
+import { Bound } from '@blocksuite/affine/global/utils';
 import { type BlockSnapshot, Text } from '@blocksuite/affine/store';
 import type { ReferenceParams } from '@blocksuite/affine-model';
 import {
@@ -597,3 +602,33 @@ export function patchForMobile() {
   ];
   return extensions;
 }
+
+export function patchForAttachmentEmbedViews(
+  reactToLit: (element: ElementOrFactory) => TemplateResult
+): ExtensionType {
+  return {
+    setup: di => {
+      di.override(AttachmentEmbedConfigIdentifier('pdf'), () => ({
+        name: 'pdf',
+        check: (model, maxFileSize) =>
+          model.type === 'application/pdf' && model.size <= maxFileSize,
+        action: model => {
+          const bound = Bound.deserialize(model.xywh);
+          bound.w = 537 + 24 + 2;
+          bound.h = 759 + 46 + 24 + 2;
+          model.doc.updateBlock(model, {
+            embed: true,
+            style: 'pdf',
+            xywh: bound.serialize(),
+          });
+        },
+        template: (model, _blobUrl) =>
+          reactToLit(
+            <AttachmentPreviewErrorBoundary key={model.id}>
+              <PDFViewerEmbedded {...buildAttachmentProps(model)} />
+            </AttachmentPreviewErrorBoundary>
+          ),
+      }));
+    },
+  };
+}

packages/frontend/core/src/modules/pdf/renderer/worker.ts

@@ -103,8 +103,9 @@ class PDFRendererBackend extends OpConsumer<ClientOps> {
 
     if (!page) return;
 
-    const width = Math.ceil(opts.width * (opts.scale ?? 1));
-    const height = Math.ceil(opts.height * (opts.scale ?? 1));
+    const scale = opts.scale ?? 1;
+    const width = Math.ceil(opts.width * scale);
+    const height = Math.ceil(opts.height * scale);
 
     const bitmap = viewer.createBitmap(width, height, 0);
     bitmap.fill(0, 0, width, height);
@@ -119,9 +120,8 @@ class PDFRendererBackend extends OpConsumer<ClientOps> {
     );
 
     const data = new Uint8ClampedArray(bitmap.toUint8Array());
-    const imageBitmap = await createImageBitmap(
-      new ImageData(data, width, height)
-    );
+    const imageData = new ImageData(data, width, height);
+    const imageBitmap = await createImageBitmap(imageData);
 
     bitmap.close();
     page.close();

packages/frontend/core/src/modules/pdf/views/components.tsx

@@ -113,3 +113,9 @@ export const LoadingSvg = memo(
 );
 
 LoadingSvg.displayName = 'pdf-loading';
+
+export const PDFPageCanvas = forwardRef<HTMLCanvasElement>((props, ref) => {
+  return <canvas className={styles.pdfPageCanvas} ref={ref} {...props} />;
+});
+
+PDFPageCanvas.displayName = 'pdf-page-canvas';

packages/frontend/core/src/modules/pdf/views/index.ts

@@ -4,6 +4,7 @@ export {
   ListPadding,
   ListWithSmallGap,
   LoadingSvg,
+  PDFPageCanvas,
   type PDFVirtuosoContext,
   type PDFVirtuosoProps,
   Scroller,

packages/frontend/core/src/modules/pdf/views/page-renderer.tsx

@@ -4,7 +4,7 @@ import { useEffect, useRef, useState } from 'react';
 
 import type { PDF } from '../entities/pdf';
 import type { PDFPage } from '../entities/pdf-page';
-import { LoadingSvg } from './components';
+import { LoadingSvg, PDFPageCanvas } from './components';
 import * as styles from './styles.css';
 
 interface PDFPageProps {
@@ -34,6 +34,8 @@ export const PDFPageRenderer = ({
   const style = { width, aspectRatio: `${width} / ${height}` };
 
   useEffect(() => {
+    if (width * height === 0) return;
+
     const { page, release } = pdf.page(pageNum, `${width}:${height}:${scale}`);
     setPdfPage(page);
 
@@ -41,6 +43,8 @@ export const PDFPageRenderer = ({
   }, [pdf, width, height, pageNum, scale]);
 
   useEffect(() => {
+    if (width * height === 0) return;
+
     pdfPage?.render({ width, height, scale });
 
     return pdfPage?.render.unsubscribe;
@@ -52,6 +56,7 @@ export const PDFPageRenderer = ({
     if (!img) return;
     const ctx = canvas.getContext('2d');
     if (!ctx) return;
+    if (width * height === 0) return;
 
     canvas.width = width * scale;
     canvas.height = height * scale;
@@ -74,11 +79,7 @@ export const PDFPageRenderer = ({
       style={style}
       onClick={() => onSelect?.(pageNum)}
     >
-      {img === null ? (
-        <LoadingSvg />
-      ) : (
-        <canvas className={styles.pdfPageCanvas} ref={canvasRef} />
-      )}
+      {img === null ? <LoadingSvg /> : <PDFPageCanvas ref={canvasRef} />}
     </div>
   );
 };

packages/frontend/core/src/modules/pdf/views/styles.css.ts

@@ -25,18 +25,6 @@ export const virtuosoItem = style({
   justifyContent: 'center',
 });
 
-export const pdfPage = style({
-  overflow: 'hidden',
-  maxWidth: 'calc(100% - 40px)',
-  background: cssVarV2('layer/white'),
-  boxSizing: 'border-box',
-  borderWidth: '1px',
-  borderStyle: 'solid',
-  borderColor: cssVarV2('layer/insideBorder/border'),
-  boxShadow:
-    '0px 4px 20px 0px var(--transparent-black-200, rgba(0, 0, 0, 0.10))',
-});
-
 export const pdfPageError = style({
   display: 'flex',
   alignSelf: 'center',
@@ -62,4 +50,5 @@ export const pdfLoading = style({
   width: '100%',
   height: '100%',
   maxWidth: '537px',
+  overflow: 'hidden',
 });

packages/frontend/core/src/modules/peek-view/entities/peek-view.ts

@@ -9,7 +9,7 @@ import type {
   SurfaceRefBlockModel,
 } from '@blocksuite/affine/blocks';
 import { AffineReference } from '@blocksuite/affine/blocks';
-import type { BlockModel } from '@blocksuite/affine/store';
+import type { Block, BlockModel } from '@blocksuite/affine/store';
 import type { AIChatBlockModel } from '@toeverything/infra';
 import { Entity, LiveData } from '@toeverything/infra';
 import type { TemplateResult } from 'lit';
@@ -36,7 +36,8 @@ export type PeekViewElement =
   | HTMLElement
   | BlockComponent
   | AffineReference
-  | HTMLAnchorElement;
+  | HTMLAnchorElement
+  | Block;
 
 export interface PeekViewTarget {
   element?: PeekViewElement;
@@ -184,7 +185,7 @@ function resolvePeekInfoFromPeekTarget(
             blockIds: [blockModel.id],
           },
         };
-      } else if (isAIChatBlockModel(blockModel)) {
+      } else if (isAIChatBlockModel(blockModel) && 'host' in element) {
         return {
           type: 'ai-chat-block',
           docRef: {