Fix share button on iPad (#124)

lib/screens/SiteLogsScreen.dart

@@ -84,23 +84,19 @@ class _SiteLogsScreenState extends State<SiteLogsScreen> {
         ),
         child: Row(mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[
           Expanded(
-              child: PlatformIconButton(
+            child: Builder(
+            builder: (BuildContext context) {
+              return PlatformIconButton(
                 padding: padding,
                 icon: Icon(context.platformIcons.share, size: 30),
                 onPressed: () {
-              Share.shareFile(
+                  Share.shareFile(context,
                       title: '${widget.site.name} logs',
                       filePath: widget.site.logFile,
                       filename: '${widget.site.name}.log');
                 },
-          )),
-          Expanded(
-              child: PlatformIconButton(
-            padding: padding,
-            icon: Icon(context.platformIcons.delete, size: Platform.isIOS ? 38 : 30),
-            onPressed: () {
-              Utils.confirmDelete(context, 'Are you sure you want to clear all logs?', () => deleteLogs());
-            },
+              );
+            }
           )),
           Expanded(
               child: PlatformIconButton(

lib/screens/siteConfig/AddCertificateScreen.dart

@@ -92,10 +92,17 @@ class _AddCertificateScreenState extends State<AddCertificateScreen> {
               labelWidth: 0,
               content: SelectableText(pubKey, style: TextStyle(fontFamily: 'RobotoMono', fontSize: 14)),
             ),
-            ConfigButtonItem(
+            Builder(
+              builder: (BuildContext context) {
+                return ConfigButtonItem(
                   content: Text('Share Public Key'),
                   onPressed: () async {
-                await Share.share(title: 'Please sign and return a certificate', text: pubKey, filename: 'device.pub');
+                    await Share.share(context,
+                        title: 'Please sign and return a certificate',
+                        text: pubKey,
+                        filename: 'device.pub');
+                  },
+                );
             },
             ),
           ])

lib/screens/siteConfig/RenderedConfigScreen.dart

@@ -19,11 +19,17 @@ class RenderedConfigScreen extends StatelessWidget {
       title: Text('Rendered Site Config'),
       scrollable: SimpleScrollable.both,
       trailingActions: <Widget>[
-        PlatformIconButton(
+        Builder(
+          builder: (BuildContext context) {
+            return PlatformIconButton(
               padding: EdgeInsets.zero,
               icon: Icon(context.platformIcons.share, size: 28.0),
-          onPressed: () => Share.share(title: '$name.yaml', text: config, filename: '$name.yaml'),
-        )
+              onPressed: () =>
+                  Share.share(context,
+                      title: '$name.yaml', text: config, filename: '$name.yaml'),
+            );
+          }
+        ),
       ],
       child: Container(
           padding: EdgeInsets.all(5),

lib/services/share.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'dart:io';
 
+import 'package:flutter/widgets.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:share_plus/share_plus.dart' as sp;
 import 'package:path/path.dart' as p;
@@ -10,7 +11,8 @@ class Share {
   /// - title: Title of message or subject if sending an email
   /// - text: The text to share
   /// - filename: The filename to use if sending over airdrop for example
-  static Future<bool> share({
+  static Future<bool> share(
+    BuildContext context, {
     required String title,
     required String text,
     required String filename,
@@ -25,7 +27,7 @@ class Share {
 
     try {
       file.writeAsStringSync(text, flush: true);
-      res = await Share.shareFile(title: title, filePath: file.path);
+      res = await Share.shareFile(context, title: title, filePath: file.path);
     } catch (err) {
       // Ignoring file write errors
     }
@@ -38,19 +40,22 @@ class Share {
   /// - title: Title of message or subject if sending an email
   /// - filePath: Path to the file to share
   /// - filename: An optional filename to override the existing file
-  static Future<bool> shareFile({
-    required String title,
+  static Future<bool> shareFile(BuildContext context,
+      {required String title,
       required String filePath,
-    String? filename
-  }) async {
+      String? filename}) async {
     assert(title.isNotEmpty);
     assert(filePath.isNotEmpty);
 
+    final box = context.findRenderObject() as RenderBox?;
+
     //NOTE: the filename used to specify the name of the file in gmail/slack/etc but no longer works that way
     // If we want to support that again we will need to save the file to a temporary directory, share that,
     // and then delete it
     final xFile = sp.XFile(filePath, name: filename);
-    final result = await sp.Share.shareXFiles([xFile], subject: title);
+    final result = await sp.Share.shareXFiles([xFile],
+        subject: title,
+        sharePositionOrigin: box!.localToGlobal(Offset.zero) & box.size);
     return result.status == sp.ShareResultStatus.success;
   }
 }