From 2ea072524c72b85d44f5c8d49971732c4e38bb59 Mon Sep 17 00:00:00 2001
From: Innei <tukon479@gmail.com>
Date: Thu, 19 Jun 2025 18:21:28 +0800
Subject: [PATCH] feat: enhance media preview with drag-to-close functionality
 and animation

- Implement drag-to-close feature for the media preview modal, allowing users to dismiss the modal by dragging.
- Introduce dynamic scaling and opacity adjustments during drag interactions.
- Update modal animations using Framer Motion for smoother transitions.
- Refactor child component handling to support zoom state changes and improve overall structure.

Signed-off-by: Innei <tukon479@gmail.com>
---
 .../ui/media/PreviewMediaContent.tsx          | 238 ++++++++++++++----
 1 file changed, 194 insertions(+), 44 deletions(-)

diff --git a/apps/desktop/layer/renderer/src/components/ui/media/PreviewMediaContent.tsx b/apps/desktop/layer/renderer/src/components/ui/media/PreviewMediaContent.tsx
index 44460739e..3a9f90106 100644
--- a/apps/desktop/layer/renderer/src/components/ui/media/PreviewMediaContent.tsx
+++ b/apps/desktop/layer/renderer/src/components/ui/media/PreviewMediaContent.tsx
@@ -11,7 +11,9 @@ import { stopPropagation } from "@follow/utils/dom"
 import { cn } from "@follow/utils/utils"
 import useEmblaCarousel from "embla-carousel-react"
 import { WheelGesturesPlugin } from "embla-carousel-wheel-gestures"
+import { useAnimationControls } from "motion/react"
 import type { FC } from "react"
+import * as React from "react"
 import { Fragment, useCallback, useEffect, useRef, useState } from "react"
 import { useTranslation } from "react-i18next"
 import type { ReactZoomPanPinchRef, ReactZoomPanPinchState } from "react-zoom-pan-pinch"
@@ -24,41 +26,164 @@ import { replaceImgUrlIfNeed } from "~/lib/img-proxy"
 import { useCurrentModal } from "../modal/stacked/hooks"
 import { VideoPlayer } from "./VideoPlayer"
 
+// Calculate the dynamic scale value and offset
+const calculateDragTransforms = (x: number, y: number) => {
+  // Minimum scale to 0.7, maximum keep 1.0
+  const maxDistance = 300
+  const dragDistance = Math.hypot(x, y)
+  const progress = Math.min(dragDistance / maxDistance, 1)
+  const scale = 1 - progress * 0.3 // From 1.0 to 0.7
+
+  // Calculate the opacity, minimum to 0.5
+  const opacity = 1 - progress * 0.5
+
+  return { scale, opacity, x, y }
+}
+
+// Framer Motion variants
+const modalVariants = {
+  initial: { scale: 0.94, opacity: 0 },
+  visible: { scale: 1, opacity: 1, x: 0, y: 0 },
+  exit: { scale: 0.94, opacity: 0 },
+  closing: (dragOffset: { x: number; y: number }) => ({
+    scale: 0.3,
+    x: dragOffset.x,
+    y: dragOffset.y,
+    opacity: 0,
+  }),
+}
+
 const Wrapper: FC<{
   src: string
-
-  children: [React.ReactNode, React.ReactNode | undefined] | React.ReactNode
+  children:
+    | [React.ReactNode, React.ReactNode | undefined]
+    | React.ReactNode
+    | ((
+        onZoomChange: (isZoomed: boolean) => void,
+      ) => [React.ReactNode, React.ReactNode | undefined] | React.ReactNode)
   className?: string
-}> = ({ children, src }) => {
+  onZoomChange?: (isZoomed: boolean) => void
+  canDragClose?: boolean
+}> = ({ children, src, onZoomChange, canDragClose = true }) => {
   const containerRef = useRef<HTMLDivElement>(null)
+  const { dismiss } = useCurrentModal()
+  const controls = useAnimationControls()
 
-  const isArray = Array.isArray(children)
-  const hasSideContent = isArray && !!children[1]
+  // Drag close state
+  const [isImageZoomed, setIsImageZoomed] = useState(false)
+  const [isDragging, setIsDragging] = useState(false)
+  const [dragOffset, setDragOffset] = useState({ x: 0, y: 0 })
+
+  // Combined zoom change callback
+  const handleZoomChange = useCallback(
+    (isZoomed: boolean) => {
+      setIsImageZoomed(isZoomed)
+      onZoomChange?.(isZoomed)
+    },
+    [onZoomChange],
+  )
+
+  const renderedChildren = typeof children === "function" ? children(handleZoomChange) : children
+  const isArray = Array.isArray(renderedChildren)
+  const hasSideContent = isArray && !!renderedChildren[1]
+
+  const enableDragClose = !isImageZoomed && canDragClose
+
+  const handleDrag = useCallback(
+    (_: any, info: any) => {
+      if (!isDragging) return
+      const { offset } = info
+      setDragOffset(offset)
+
+      // Real-time update the transform when dragging
+      const dragTransforms = calculateDragTransforms(offset.x, offset.y)
+      controls.set({
+        scale: dragTransforms.scale,
+        x: offset.x * 0.3,
+        y: offset.y * 0.3,
+        opacity: dragTransforms.opacity,
+      })
+    },
+    [isDragging, controls],
+  )
+
+  const handleDragEnd = useCallback(
+    async (_: any, info: any) => {
+      const { offset, velocity } = info
+      // Calculate the drag distance and velocity
+      const dragDistance = Math.hypot(offset.x, offset.y)
+      const velocityDistance = Math.hypot(velocity.x, velocity.y)
+
+      // If the drag distance is greater than 100px or the overall drag distance is greater than 150px or the velocity is greater than 300, close the modal
+      const shouldClose =
+        offset.y > 100 || dragDistance > 150 || velocity.y > 300 || velocityDistance > 500
+
+      if (shouldClose) {
+        // Execute the closing animation
+        await controls.start("closing", {
+          type: "spring",
+          stiffness: 400,
+          damping: 40,
+          duration: 0.3,
+        })
+        dismiss()
+      } else {
+        // Reset to normal state
+        setIsDragging(false)
+        setDragOffset({ x: 0, y: 0 })
+        controls.start("visible", {
+          ...Spring.presets.snappy,
+        })
+      }
+    },
+    [controls, dismiss],
+  )
+
+  const handleDragStart = useCallback(() => {
+    setIsDragging(true)
+  }, [])
+
+  // Initialize the animation
+  useEffect(() => {
+    controls.start("visible", {
+      ...Spring.presets.snappy,
+    })
+  }, [controls])
 
   return (
     <div ref={containerRef} className="fixed inset-0">
       <m.div
-        initial={{ scale: 0.94, opacity: 0 }}
-        animate={{ scale: 1, opacity: 1 }}
-        exit={{ scale: 0.94, opacity: 0 }}
-        transition={Spring.presets.snappy}
+        variants={modalVariants}
+        initial="initial"
+        animate={controls}
+        exit="exit"
+        custom={dragOffset}
         className="bg-material-medium-dark flex size-full backdrop-blur"
+        drag={enableDragClose}
+        dragConstraints={{ top: 0, bottom: 300, left: -200, right: 200 }}
+        dragElastic={{ top: 0, bottom: 0.3, left: 0.2, right: 0.2 }}
+        onDragStart={handleDragStart}
+        onDrag={handleDrag}
+        onDragEnd={handleDragEnd}
+        style={{
+          cursor: enableDragClose ? (isDragging ? "grabbing" : "grab") : "default",
+        }}
       >
         <div
           className={cn(
             "group/left relative flex h-full w-0 grow overflow-hidden",
-            hasSideContent ? "min-w-96 items-center justify-center" : "px-6",
+            hasSideContent ? "min-w-96 items-center justify-center" : "",
           )}
         >
           <HeaderActions src={src} />
-          {isArray ? children[0] : children}
+          {isArray ? renderedChildren[0] : renderedChildren}
         </div>
         {hasSideContent ? (
           <div
             className="bg-background box-border flex h-full w-[400px] min-w-0 shrink-0 flex-col px-2 pt-1"
             onClick={stopPropagation}
           >
-            {children[1]}
+            {isArray ? renderedChildren[1] : null}
           </div>
         ) : undefined}
       </m.div>
@@ -93,7 +218,7 @@ const HeaderActions: FC<{
 
       <HeaderButton
         description={t("common:words.close")}
-        className="ml-3 !bg-[#121212] !opacity-100"
+        className="ml-3 !border-red-500/20 !bg-red-600/30 !opacity-100 hover:!bg-red-600/50"
         onClick={dismiss}
       >
         <i className="i-mgc-close-cute-re" />
@@ -103,7 +228,7 @@ const HeaderActions: FC<{
 }
 
 const HeaderButton: FC<{
-  description: string
+  description?: string
   onClick: () => void
   className?: string
   children: React.ReactNode
@@ -111,24 +236,52 @@ const HeaderButton: FC<{
   return (
     <Tooltip>
       <TooltipTrigger asChild>
-        <button
+        <m.button
           type="button"
           onClick={(e) => {
             e.stopPropagation()
             onClick()
           }}
           className={cn(
-            "hover:bg-material-ultra-thick-dark cursor-button backdrop-blur-background pointer-events-auto flex size-10 items-center justify-center rounded-full bg-transparent text-white duration-200 hover:text-white",
-            "text-lg opacity-0 transition-opacity group-hover/left:opacity-100",
+            // Base styles with modern glass morphism - perfect 1:1 circle
+            "pointer-events-auto relative flex size-10 items-center justify-center rounded-full",
+            "bg-black/20 text-white backdrop-blur-md",
+            // Border and shadow for depth
+            "border border-white/10 shadow-lg shadow-black/25",
+            // Opacity and transition
+            "opacity-0 transition-all duration-300 ease-out group-hover/left:opacity-100",
+            // Text size
+            "text-lg",
             className,
           )}
+          initial={{ scale: 1 }}
+          whileHover={{
+            scale: 1.1,
+            backgroundColor: "rgba(255, 255, 255, 0.15)",
+            borderColor: "rgba(255, 255, 255, 0.2)",
+          }}
+          whileTap={{ scale: 0.95 }}
+          transition={{
+            type: "spring",
+            stiffness: 400,
+            damping: 30,
+          }}
         >
-          {children}
-        </button>
+          {/* Glass effect overlay */}
+          <div className="absolute inset-0 rounded-full bg-gradient-to-t from-white/5 to-white/20 opacity-0 transition-opacity duration-300 hover:opacity-100" />
+
+          {/* Icon container */}
+          <div className="center relative z-10 flex">{children}</div>
+
+          {/* Subtle inner shadow for depth */}
+          <div className="absolute inset-0 rounded-full shadow-inner shadow-black/10" />
+        </m.button>
       </TooltipTrigger>
-      <TooltipPortal>
-        <TooltipContent>{description}</TooltipContent>
-      </TooltipPortal>
+      {description && (
+        <TooltipPortal>
+          <TooltipContent>{description}</TooltipContent>
+        </TooltipPortal>
+      )}
     </Tooltip>
   )
 }
@@ -139,7 +292,8 @@ export const PreviewMediaContent: FC<{
   media: PreviewMediaProps[]
   initialIndex?: number
   children?: React.ReactNode
-}> = ({ media, initialIndex = 0, children }) => {
+  onZoomChange?: (isZoomed: boolean) => void
+}> = ({ media, initialIndex = 0, children, onZoomChange }) => {
   const [emblaRef, emblaApi] = useEmblaCarousel({ loop: true, startIndex: initialIndex }, [
     WheelGesturesPlugin(),
   ])
@@ -179,8 +333,8 @@ export const PreviewMediaContent: FC<{
     const { type } = media[0]!
     const isVideo = type === "video"
     return (
-      <Wrapper src={src}>
-        {[
+      <Wrapper src={src} onZoomChange={onZoomChange} canDragClose>
+        {(handleZoomChange) => [
           <Fragment key={src}>
             {isVideo ? (
               <VideoPlayer
@@ -200,6 +354,7 @@ export const PreviewMediaContent: FC<{
                 height={media[0]!.height}
                 width={media[0]!.width}
                 blurhash={media[0]!.blurhash}
+                onZoomChange={handleZoomChange}
               />
             )}
           </Fragment>,
@@ -209,8 +364,8 @@ export const PreviewMediaContent: FC<{
     )
   }
   return (
-    <Wrapper src={currentMedia!.url}>
-      {[
+    <Wrapper src={currentMedia!.url} onZoomChange={onZoomChange} canDragClose={false}>
+      {(handleZoomChange) => [
         <div key={"left"} className="group size-full overflow-hidden" ref={emblaRef}>
           <div className="flex size-full">
             {media.map((med) => (
@@ -234,6 +389,7 @@ export const PreviewMediaContent: FC<{
                     height={med.height}
                     width={med.width}
                     blurhash={med.blurhash}
+                    onZoomChange={handleZoomChange}
                   />
                 )}
               </div>
@@ -241,34 +397,26 @@ export const PreviewMediaContent: FC<{
           </div>
 
           {currentSlideIndex > 0 && (
-            <button
-              type="button"
-              className={`bg-material-medium absolute left-2 top-1/2 z-[100] flex size-8 -translate-y-1/2 items-center justify-center rounded-full text-white opacity-0 backdrop-blur-sm duration-200 hover:bg-black/40 group-hover:opacity-100 lg:left-4 lg:size-10`}
-              onClick={(e) => {
-                e.stopPropagation()
+            <HeaderButton
+              className={`absolute left-2 top-1/2 z-[100] flex size-8 -translate-y-1/2 items-center justify-center rounded-full text-white opacity-0 backdrop-blur-sm duration-200 hover:bg-black/40 group-hover:opacity-100 lg:left-4 lg:size-10`}
+              onClick={() => {
                 emblaApi?.scrollPrev()
               }}
             >
               <i className={`i-mingcute-left-line text-lg lg:text-xl`} />
-            </button>
+            </HeaderButton>
           )}
 
           {currentSlideIndex < media.length - 1 && (
-            <button
-              type="button"
-              className={`bg-material-medium absolute right-2 top-1/2 z-[100] flex size-8 -translate-y-1/2 items-center justify-center rounded-full text-white opacity-0 backdrop-blur-sm duration-200 hover:bg-black/40 group-hover:opacity-100 lg:right-4 lg:size-10`}
-              onClick={(e) => {
-                e.stopPropagation()
+            <HeaderButton
+              className={`absolute right-2 top-1/2 z-[100] flex size-8 -translate-y-1/2 items-center justify-center rounded-full text-white opacity-0 backdrop-blur-sm duration-200 hover:bg-black/40 group-hover:opacity-100 lg:right-4 lg:size-10`}
+              onClick={() => {
                 emblaApi?.scrollNext()
               }}
             >
               <i className={`i-mingcute-right-line text-lg lg:text-xl`} />
-            </button>
+            </HeaderButton>
           )}
-
-          <div className="absolute bottom-4 right-4 z-30 tabular-nums">
-            {currentSlideIndex + 1} / {media.length}
-          </div>
         </div>,
         children,
       ]}
@@ -282,8 +430,9 @@ const FallbackableImage: FC<
     containerClassName?: string
     fallbackUrl?: string
     blurhash?: string
+    onZoomChange?: (isZoomed: boolean) => void
   }
-> = ({ src, fallbackUrl, containerClassName }) => {
+> = ({ src, fallbackUrl, containerClassName, onZoomChange }) => {
   const [currentSrc, setCurrentSrc] = useState(() => replaceImgUrlIfNeed(src))
   const [isAllError, setIsAllError] = useState(false)
 
@@ -334,6 +483,7 @@ const FallbackableImage: FC<
           highResLoaded={!isLoading}
           onLoad={() => setIsLoading(false)}
           onError={handleError}
+          onZoomChange={onZoomChange}
         />
       )}
       {isAllError && (