add second indent button

app/ios/Podfile

@@ -0,0 +1,38 @@
+# Uncomment this line to define a global platform for your project
+# platform :ios, '9.0'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def flutter_root
+  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
+  unless File.exist?(generated_xcode_build_settings_path)
+    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
+  end
+
+  File.foreach(generated_xcode_build_settings_path) do |line|
+    matches = line.match(/FLUTTER_ROOT\=(.*)/)
+    return matches[1].strip if matches
+  end
+  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
+end
+
+require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
+
+flutter_ios_podfile_setup
+
+target 'Runner' do
+  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    flutter_additional_ios_build_settings(target)
+  end
+end

lib/widgets/toolbar.dart

@@ -600,12 +600,14 @@ class _HistoryButtonState extends State<HistoryButton> {
 
 class IndentButton extends StatefulWidget {
   final IconData icon;
-
   final QuillController controller;
+  final bool isIncrease;
 
-  IndentButton({Key key, @required this.icon, @required this.controller})
+  IndentButton({Key key, @required this.icon, @required this.controller
+    , @required this.isIncrease})
       : assert(icon != null),
         assert(controller != null),
+        assert(isIncrease != null),
         super(key: key);
 
   @override
@@ -680,7 +682,8 @@ class QuillToolbar extends StatefulWidget implements PreferredSizeWidget {
       bool showListBullets = true,
       bool showCodeBlock = true,
       bool showQuote = true,
-      bool showIndent = true,
+      bool showIndentIncrease = true,
+      bool showIndentDecrease = true,
       bool showLink = true,
       bool showHistory = true,
       bool showHorizontalRule = false,
@@ -827,10 +830,19 @@ class QuillToolbar extends StatefulWidget implements PreferredSizeWidget {
         ),
       ),
       Visibility(
-        visible: showIndent,
+        visible: showIndentIncrease,
         child: IndentButton(
           icon: Icons.format_indent_increase,
           controller: controller,
+          isIncrease: true,
+        ),
+      ),
+      Visibility(
+        visible: showIndentDecrease,
+        child: IndentButton(
+          icon: Icons.format_indent_decrease,
+          controller: controller,
+          isIncrease: false,
         ),
       ),
       Visibility(