Expandable content done

src/@types/untyped.d.ts

@@ -1 +1,2 @@
 declare module 'react-native-toast-message'
+declare module 'react-native-htmlview'

src/components/Menu/Container.tsx

@@ -31,7 +31,7 @@ const MenuContainer: React.FC<Props> = ({ ...props }) => {
 const styles = StyleSheet.create({
   base: {
     borderTopWidth: 1,
-    marginBottom: StyleConstants.Spacing.Global.PagePadding
+    marginBottom: StyleConstants.Spacing.L
   }
 })
 

src/components/ParseContent.tsx

@@ -1,5 +1,5 @@
-import React, { useCallback } from 'react'
-import { StyleSheet, Text, View } from 'react-native'
+import React, { useCallback, useState } from 'react'
+import { Pressable, StyleSheet, Text } from 'react-native'
 import HTMLView from 'react-native-htmlview'
 import { useNavigation } from '@react-navigation/native'
 
@@ -7,12 +7,14 @@ import Emojis from 'src/components/Timelines/Timeline/Shared/Emojis'
 import { useTheme } from 'src/utils/styles/ThemeManager'
 import { Feather } from '@expo/vector-icons'
 import { StyleConstants } from 'src/utils/styles/constants'
+import { LinearGradient } from 'expo-linear-gradient'
 
 // Prevent going to the same hashtag multiple times
 const renderNode = ({
   theme,
   node,
   index,
+  size,
   navigation,
   mentions,
   showFullLink
@@ -20,6 +22,7 @@ const renderNode = ({
   theme: any
   node: any
   index: number
+  size: number
   navigation: any
   mentions?: Mastodon.Mention[]
   showFullLink: boolean
@@ -32,7 +35,7 @@ const renderNode = ({
         return (
           <Text
             key={index}
-            style={{ color: theme.link }}
+            style={{ color: theme.link, fontSize: size }}
             onPress={() => {
               const tag = href.split(new RegExp(/\/tag\/(.*)|\/tags\/(.*)/))
               navigation.push('Screen-Shared-Hashtag', {
@@ -48,7 +51,7 @@ const renderNode = ({
         return (
           <Text
             key={index}
-            style={{ color: theme.link }}
+            style={{ color: theme.link, fontSize: size }}
             onPress={() => {
               const username = href.split(new RegExp(/@(.*)/))
               const usernameIndex = mentions.findIndex(
@@ -69,7 +72,7 @@ const renderNode = ({
       return (
         <Text
           key={index}
-          style={{ color: theme.link }}
+          style={{ color: theme.link, fontSize: size }}
           onPress={() => {
             navigation.navigate('Screen-Shared-Webview', {
               uri: href,
@@ -77,11 +80,7 @@ const renderNode = ({
             })
           }}
         >
-          <Feather
-            name='external-link'
-            size={StyleConstants.Font.Size.M}
-            color={theme.link}
-          />{' '}
+          <Feather name='external-link' size={size} color={theme.link} />{' '}
           {showFullLink ? href : domain[1]}
         </Text>
       )
@@ -111,7 +110,15 @@ const ParseContent: React.FC<Props> = ({
 
   const renderNodeCallback = useCallback(
     (node, index) =>
-      renderNode({ theme, node, index, navigation, mentions, showFullLink }),
+      renderNode({
+        theme,
+        node,
+        index,
+        size,
+        navigation,
+        mentions,
+        showFullLink
+      }),
     []
   )
   const textComponent = useCallback(
@@ -124,10 +131,62 @@ const ParseContent: React.FC<Props> = ({
     []
   )
   const rootComponent = useCallback(({ children }) => {
+    const { theme } = useTheme()
+    const [textLoaded, setTextLoaded] = useState(false)
+    const [totalLines, setTotalLines] = useState<number | undefined>()
+    const [lineHeight, setLineHeight] = useState<number | undefined>()
+    const [shownLines, setShownLines] = useState(numberOfLines)
+
     return (
-      <Text numberOfLines={numberOfLines} style={styles.root}>
-        {children}
-      </Text>
+      <>
+        <Text
+          numberOfLines={
+            totalLines && totalLines > numberOfLines ? shownLines : totalLines
+          }
+          style={styles.root}
+          onTextLayout={({ nativeEvent }) => {
+            if (!textLoaded) {
+              setTextLoaded(true)
+              setTotalLines(nativeEvent.lines.length)
+              setLineHeight(nativeEvent.lines[0].height)
+            }
+          }}
+        >
+          {children}
+        </Text>
+        {totalLines && lineHeight && totalLines > shownLines && (
+          <Pressable
+            onPress={() => {
+              setShownLines(totalLines)
+            }}
+            style={{
+              marginTop: -lineHeight
+            }}
+          >
+            <LinearGradient
+              colors={[
+                theme.backgroundGradientStart,
+                theme.backgroundGradientEnd
+              ]}
+              locations={[0, lineHeight / (StyleConstants.Font.Size.S * 5)]}
+              style={{
+                paddingTop: StyleConstants.Font.Size.S * 2,
+                paddingBottom: StyleConstants.Font.Size.S
+              }}
+            >
+              <Text
+                style={{
+                  textAlign: 'center',
+                  fontSize: StyleConstants.Font.Size.S,
+                  color: theme.primary
+                }}
+              >
+                展开全文
+              </Text>
+            </LinearGradient>
+          </Pressable>
+        )}
+      </>
     )
   }, [])
 

src/components/Timelines/Timeline/Shared/Content.tsx

@@ -12,13 +12,15 @@ export interface Props {
   emojis: Mastodon.Emoji[]
   mentions: Mastodon.Mention[]
   spoiler_text?: string
+  numberOfLines?: number
 }
 
 const Content: React.FC<Props> = ({
   content,
   emojis,
   mentions,
-  spoiler_text
+  spoiler_text,
+  numberOfLines
 }) => {
   const { theme } = useTheme()
   const [spoilerCollapsed, setSpoilerCollapsed] = useState(true)
@@ -28,11 +30,13 @@ const Content: React.FC<Props> = ({
       {content &&
         (spoiler_text ? (
           <>
-            <Text>
+            <Text style={{ fontSize: StyleConstants.Font.Size.M }}>
               {spoiler_text}{' '}
               <Text
                 onPress={() => setSpoilerCollapsed(!spoilerCollapsed)}
-                style={{ color: theme.link }}
+                style={{
+                  color: theme.link
+                }}
               >
                 {spoilerCollapsed ? '点击展开' : '点击收起'}
               </Text>
@@ -43,6 +47,7 @@ const Content: React.FC<Props> = ({
                 size={StyleConstants.Font.Size.M}
                 emojis={emojis}
                 mentions={mentions}
+                {...(numberOfLines && { numberOfLines: numberOfLines })}
               />
             </Collapsible>
           </>
@@ -52,6 +57,7 @@ const Content: React.FC<Props> = ({
             size={StyleConstants.Font.Size.M}
             emojis={emojis}
             mentions={mentions}
+            {...(numberOfLines && { numberOfLines: numberOfLines })}
           />
         ))}
     </>

src/utils/styles/themes.ts

@@ -5,6 +5,8 @@ export type ColorDefinitions =
   | 'secondary'
   | 'disabled'
   | 'background'
+  | 'backgroundGradientStart'
+  | 'backgroundGradientEnd'
   | 'link'
   | 'border'
   | 'separator'
@@ -34,6 +36,14 @@ const themeColors: {
     light: 'rgb(255, 255, 255)',
     dark: 'rgb(0, 0, 0)'
   },
+  backgroundGradientStart: {
+    light: 'rgba(255, 255, 255, 0.5)',
+    dark: 'rgba(0, 0, 0, 0.5)'
+  },
+  backgroundGradientEnd: {
+    light: 'rgba(255, 255, 255, 1)',
+    dark: 'rgba(0, 0, 0, 1)'
+  },
   link: {
     light: 'rgb(0, 122, 255)',
     dark: 'rgb(10, 132, 255)'