Add composer FAB to home page

src/view/com/util/FloatingActionButton.tsx

@@ -0,0 +1,50 @@
+import React from 'react'
+import {GestureResponderEvent, StyleSheet, TouchableOpacity} from 'react-native'
+import LinearGradient from 'react-native-linear-gradient'
+import {FontAwesomeIcon} from '@fortawesome/react-native-fontawesome'
+import {IconProp} from '@fortawesome/fontawesome-svg-core'
+import {colors, gradients} from '../../lib/styles'
+import * as zIndex from '../../lib/z-index'
+
+type OnPress = ((event: GestureResponderEvent) => void) | undefined
+export function FAB({icon, onPress}: {icon: IconProp; onPress: OnPress}) {
+  return (
+    <TouchableOpacity style={styles.outer} onPress={onPress}>
+      <LinearGradient
+        colors={[gradients.primary.start, gradients.primary.end]}
+        start={{x: 0, y: 0}}
+        end={{x: 1, y: 1}}
+        style={styles.inner}>
+        <FontAwesomeIcon
+          size={20}
+          icon={icon}
+          color={colors.white}
+          style={styles.icon}
+        />
+      </LinearGradient>
+    </TouchableOpacity>
+  )
+}
+
+const styles = StyleSheet.create({
+  outer: {
+    position: 'absolute',
+    zIndex: zIndex.FAB,
+    right: 20,
+    bottom: 20,
+    width: 50,
+    height: 50,
+    borderRadius: 25,
+    shadowColor: '#000',
+    shadowOpacity: 0.3,
+    shadowOffset: {width: 0, height: 1},
+  },
+  inner: {
+    width: 50,
+    height: 50,
+    borderRadius: 25,
+    justifyContent: 'center',
+    alignItems: 'center',
+  },
+  icon: {},
+})

src/view/lib/z-index.ts

@@ -0,0 +1,2 @@
+export const FAB = 1
+export const BASE = 0

src/view/screens/Home.tsx

@@ -2,6 +2,7 @@ import React, {useState, useEffect, useLayoutEffect} from 'react'
 import {Image, StyleSheet, TouchableOpacity, View} from 'react-native'
 import {FontAwesomeIcon} from '@fortawesome/react-native-fontawesome'
 import {Feed} from '../com/feed/Feed'
+import {FAB} from '../com/util/FloatingActionButton'
 import {useStores} from '../../state'
 import {useLoadEffect} from '../lib/navigation'
 import {AVIS} from '../lib/assets'
@@ -48,9 +49,14 @@ export function Home({params}: ScreenParams) {
   //   })
   // }, [navigation])
 
+  const onComposePress = () => {
+    store.nav.navigate('/compose')
+  }
+
   return (
     <View>
       <Feed feed={store.homeFeed} />
+      <FAB icon="pen-nib" onPress={onComposePress} />
     </View>
   )
 }