Add iOS 26 fluid zoom transition to alt text dialog (#9970)

Co-authored-by: Claude <noreply@anthropic.com>

modules/bottom-sheet/android/src/main/java/expo/modules/bottomsheet/BottomSheetModule.kt

@@ -48,6 +48,8 @@ class BottomSheetModule : Module() {
         Prop("preventExpansion") { view: BottomSheetView, prop: Boolean ->
           view.preventExpansion = prop
         }
+
+        Prop("sourceViewTag") { _: BottomSheetView, _: Int? -> }
       }
     }
 }

modules/bottom-sheet/ios/BottomSheetModule.swift

@@ -42,6 +42,10 @@ public class BottomSheetModule: Module {
       Prop("preventExpansion") { (view: SheetView, prop: Bool) in
         view.preventExpansion = prop
       }
+
+      Prop("sourceViewTag") { (view: SheetView, prop: Int?) in
+        view.sourceViewTag = prop
+      }
     }
   }
 }

modules/bottom-sheet/ios/SheetView.swift

@@ -26,6 +26,7 @@ class SheetView: ExpoView, UISheetPresentationControllerDelegate {
   var preventDismiss = false
   var preventExpansion = false
   var cornerRadius: CGFloat?
+  var sourceViewTag: Int?
   var minHeight = 0.0
   var maxHeight: CGFloat! {
     didSet {
@@ -135,6 +136,15 @@ class SheetView: ExpoView, UISheetPresentationControllerDelegate {
     }
     sheetVc.view.addSubview(innerView)
 
+    if #available(iOS 26.0, *),
+       let tag = self.sourceViewTag,
+       let bridge = self.appContext?.reactBridge,
+       let sourceView = bridge.uiManager.view(forReactTag: NSNumber(value: tag)) {
+      sheetVc.preferredTransition = .zoom { _ in
+        return sourceView
+      }
+    }
+
     self.sheetVc = sheetVc
     self.isOpening = true
 

modules/bottom-sheet/src/BottomSheet.types.ts

@@ -1,5 +1,4 @@
-import React from 'react'
+import {type ColorValue, type NativeSyntheticEvent} from 'react-native'
-import {ColorValue, NativeSyntheticEvent} from 'react-native'
 
 export type BottomSheetState = 'closed' | 'closing' | 'open' | 'opening'
 
@@ -25,6 +24,7 @@ export interface BottomSheetViewProps {
   backgroundColor?: ColorValue
   containerBackgroundColor?: ColorValue
   disableDrag?: boolean
+  sourceViewTag?: number
 
   minHeight?: number
   maxHeight?: number

src/view/com/composer/photos/Gallery.tsx

@@ -1,5 +1,6 @@
-import React from 'react'
+import React, {useState} from 'react'
 import {
+  findNodeHandle,
   type ImageStyle,
   Keyboard,
   type LayoutChangeEvent,
@@ -144,6 +145,14 @@ const GalleryItem = ({
 
   const altTextControl = Dialog.useDialogControl()
   const editControl = Dialog.useDialogControl()
+  const [altBtnViewTag, setAltBtnViewTag] = useState<number>()
+
+  const altBtnRef = (node: View | null) => {
+    if (node) {
+      const tag = findNodeHandle(node)
+      if (tag != null) setAltBtnViewTag(tag)
+    }
+  }
 
   const onImageEdit = () => {
     if (IS_NATIVE) {
@@ -162,6 +171,7 @@ const GalleryItem = ({
 
   return (
     <View
+      ref={altBtnRef}
       style={imageStyle as ViewStyle}
       // Fixes ALT and icons appearing with half opacity when the post is inactive
       renderToHardwareTextureAndroid>
@@ -240,6 +250,7 @@ const GalleryItem = ({
         control={altTextControl}
         image={image}
         onChange={onChange}
+        sourceViewTag={altBtnViewTag}
       />
 
       <EditImageDialog

src/view/com/composer/photos/ImageAltTextDialog.tsx

@@ -23,12 +23,14 @@ type Props = {
   control: Dialog.DialogOuterProps['control']
   image: ComposerImage
   onChange: (next: ComposerImage) => void
+  sourceViewTag?: number
 }
 
 export const ImageAltTextDialog = ({
   control,
   image,
   onChange,
+  sourceViewTag,
 }: Props): React.ReactNode => {
   const {height: minHeight} = useWindowDimensions()
   const [altText, setAltText] = useState(image.alt)
@@ -42,7 +44,7 @@ export const ImageAltTextDialog = ({
           alt: enforceLen(altText, MAX_ALT_TEXT, true),
         })
       }}
-      nativeOptions={{minHeight}}>
+      nativeOptions={{minHeight, sourceViewTag}}>
       <Dialog.Handle />
       <ImageAltTextInner
         control={control}