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DID changes in pdfviewer for new zen mode #525

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DID changes in pdfviewer for new zen mode #525

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74 changes: 59 additions & 15 deletions src/components/newPdfViewer.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ import { useZoom, ZoomPluginPackage, ZoomMode } from '@embedpdf/plugin-
import { RenderLayer, RenderPluginPackage } from '@embedpdf/plugin-render/react';
import { ExportPluginPackage } from '@embedpdf/plugin-export/react';

import { Download, ZoomIn, ZoomOut, Maximize2, Minimize2 } from "lucide-react";
import { Download, ZoomIn, ZoomOut, Maximize2, Minimize2, Focus } from "lucide-react";
import { memo, useCallback, useEffect, useMemo, useRef, useState } from "react";
import { downloadFile } from "../lib/utils/download";
import { Button } from "./ui/button";
Expand All @@ -21,6 +21,8 @@ interface ControlProps {
documentId: string;
toggleFullscreen: () => void;
isFullscreen: boolean;
toggleZenMode: () => void;
isZenMode: boolean;
onDownload: () => Promise<void>;
forceMobile?: boolean;
isMobile: boolean;
Expand Down Expand Up @@ -57,8 +59,8 @@ function useBreakpoint() {
return {isMobile: width !== null && width < 768, isSmall: width !== null && width < 640};
}

const Controls = memo(function Controls({documentId, toggleFullscreen, isFullscreen, onDownload,
forceMobile, isMobile, isSmall, viewerRef}: ControlProps) {
const Controls = memo(function Controls({documentId, toggleFullscreen, isFullscreen, toggleZenMode,
isZenMode, onDownload, forceMobile, isMobile, isSmall, viewerRef}: ControlProps) {

const { provides: zoomProv, state: zoomState } = useZoom(documentId);
const { provides: scrollProv, state: scrollState } = useScroll(documentId);
Expand All @@ -79,6 +81,9 @@ const Controls = memo(function Controls({documentId, toggleFullscreen, isFullscr
setTotalPages(0);
};
}, [scrollCapability, documentId]);
// Zen mode isn't real browser fullscreen, but it hides everything around the
// paper the same way, so it gets the same "immersive" control layout.
const immersive = isFullscreen || isZenMode;

useEffect(() => {
if (!scrollProv) return;
Expand Down Expand Up @@ -120,7 +125,7 @@ const pageChange = useCallback(
}

const pageInput = (
<div className={(!isFullscreen && !isMobile) ? "flex flex-col items-center gap-2" : "flex flex-row items-center gap-2"}>
<div className={(!immersive && !isMobile) ? "flex flex-col items-center gap-2" : "flex flex-row items-center gap-2"}>
<input
type="text"
value={pageNo}
Expand Down Expand Up @@ -154,6 +159,16 @@ const pageChange = useCallback(
{isFullscreen ? <Minimize2 size={24} /> : <Maximize2 size={24} />}
</Button>

<Button
onClick={toggleZenMode}
className={`h-10 w-10 rounded p-0 text-white transition ${
isZenMode ? "bg-[#7d4fc7] ring-2 ring-white/50" : "bg-[#6536c1] hover:bg-[#7d4fc7]"
}`}
title={isZenMode ? "Exit zen mode (Esc)" : "Zen mode — hide everything but the paper"}
>
<Focus size={24} />
</Button>

<Button
onClick={onDownload}
className="h-10 w-10 rounded p-0 text-white bg-[#6536c1] transition hover:bg-[#7d4fc7]"
Expand Down Expand Up @@ -198,7 +213,7 @@ const pageChange = useCallback(
<div
style={{
position: "absolute",
...(isFullscreen ? {...fullScreenStyle, flexDirection: "row"} : {
...(immersive ? {...fullScreenStyle, flexDirection: "row"} : {
top: "40%",
right: 20,
transform: "translateY(-50%)",
Expand All @@ -210,7 +225,7 @@ const pageChange = useCallback(
gap: 16,
alignItems: "center",
alignSelf: "center",
width: isFullscreen ? "auto" : "96px",
width: immersive ? "auto" : "96px",
background: "#262635",
borderRadius: 8,
backdropFilter: "blur(6px)",
Expand All @@ -223,7 +238,7 @@ const pageChange = useCallback(
<div
style={{
position: "absolute",
...(isFullscreen ? fullScreenStyle : {
...(immersive ? fullScreenStyle : {
top: "40%",
right: 20,
transform: "translateY(-50%)",
Expand All @@ -235,7 +250,7 @@ const pageChange = useCallback(
gap: 16,
alignItems: "center",
alignSelf: "center",
width: isFullscreen ? "auto" : "96px",
width: immersive ? "auto" : "96px",
background: "#262635",
borderRadius: 8,
backdropFilter: "blur(6px)",
Expand All @@ -245,7 +260,7 @@ const pageChange = useCallback(
<div
style={{
display: "flex",
flexDirection: isFullscreen ? "row" as const : "column" as const,
flexDirection: immersive ? "row" as const : "column" as const,
gap: 16,
alignItems: "center",
}}
Expand Down Expand Up @@ -411,6 +426,7 @@ export default function PDFViewer({
const { isMobile, isSmall } = useBreakpoint();
const { resolvedTheme } = useTheme();
const [isFullscreen, setIsFullscreen] = useState(false);
const [isZenMode, setIsZenMode] = useState(false);
const viewerRef = useRef<HTMLDivElement>(null);
const effectiveBackgroundColor =
backgroundColor ?? (resolvedTheme === "light" ? "#F3F5FF" : "#070114");
Expand Down Expand Up @@ -441,6 +457,27 @@ export default function PDFViewer({
return () => document.removeEventListener("fullscreenchange", handleFullscreenChange);
}, []);

const toggleZenMode = useCallback(() => {
setIsZenMode((z) => !z);
}, []);

// Zen mode is a page-level "just the paper" view — no real Fullscreen API
// call (which iOS Safari barely supports), just an overlay that covers the
// navbar/title/related-papers behind it. Esc backs out of it like fullscreen does.
useEffect(() => {
if (!isZenMode) return;
const handleKeyDown = (e: KeyboardEvent) => {
if (e.key === "Escape") setIsZenMode(false);
};
document.addEventListener("keydown", handleKeyDown);
const previousOverflow = document.body.style.overflow;
document.body.style.overflow = "hidden";
return () => {
document.removeEventListener("keydown", handleKeyDown);
document.body.style.overflow = previousOverflow;
};
}, [isZenMode]);

const plugins = useMemo(() => [
createPluginRegistration(DocumentManagerPluginPackage, {
initialDocuments: [{ url }],
Expand Down Expand Up @@ -503,9 +540,12 @@ if (isLoading || !engine) {
data-pdf-viewer-scrollbars={hideScrollbar ? "hidden" : "visible"}
className={className}
style={{
height,
width: "100%",
position: "relative",
height: isZenMode ? "100dvh" : height,
width: isZenMode ? "100vw" : "100%",
position: isZenMode ? "fixed" : "relative",
top: isZenMode ? 0 : undefined,
left: isZenMode ? 0 : undefined,
zIndex: isZenMode ? 9999 : undefined,
backgroundColor: effectiveBackgroundColor,
display: "flex",
flexDirection: "column",
Expand All @@ -518,11 +558,13 @@ if (isLoading || !engine) {
activeDocumentId && (
<>
<WheelZoom documentId={activeDocumentId} viewerRef={viewerRef} />
{!hideControls && (isMobile && !isFullscreen) &&
{!hideControls && (isMobile && !isFullscreen && !isZenMode) &&
<Controls
documentId={activeDocumentId}
toggleFullscreen={toggleFullscreen}
isFullscreen={isFullscreen}
toggleZenMode={toggleZenMode}
isZenMode={isZenMode}
onDownload={handleDownload}
forceMobile={true}
isMobile={isMobile}
Expand Down Expand Up @@ -569,11 +611,13 @@ if (isLoading || !engine) {
)}
</DocumentContent>

{!hideControls && (!isMobile || isFullscreen) && (
{!hideControls && (!isMobile || isFullscreen || isZenMode) && (
<Controls
documentId={activeDocumentId}
toggleFullscreen={toggleFullscreen}
isFullscreen={isFullscreen}
toggleZenMode={toggleZenMode}
isZenMode={isZenMode}
onDownload={handleDownload}
forceMobile={false}
isMobile={isMobile}
Expand All @@ -588,4 +632,4 @@ if (isLoading || !engine) {
</div>
</>
);
}
}
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