Merge pull request #136 from GetStream/nash/expose_message_input_styling

Expose addition input styling options

lib/src/message_input.dart

@@ -93,6 +93,8 @@ class MessageInput extends StatefulWidget {
     this.actions,
     this.actionsLocation = ActionsLocation.left,
     this.attachmentThumbnailBuilders,
+    this.inputTextStyle,
+    this.attachmentIconColor
   }) : super(key: key);
 
   /// Message to edit
@@ -138,6 +140,13 @@ class MessageInput extends StatefulWidget {
   /// Map that defines a thumbnail builder for an attachment type
   final Map<String, AttachmentThumbnailBuilder> attachmentThumbnailBuilders;
 
+  /// Text style used in message text field. If null, [MessageInput] uses
+  /// `Theme.of(context).textTheme.bodyText2`.
+  final TextStyle inputTextStyle;
+
+  /// Color used for attachment icon.
+  final Color attachmentIconColor;
+
   @override
   MessageInputState createState() => MessageInputState();
 
@@ -276,10 +285,12 @@ class MessageInputState extends State<MessageInput> {
               _typingStarted = true;
             });
           },
-          style: Theme.of(context).textTheme.bodyText2,
+          style: widget.inputTextStyle ?? Theme.of(context).textTheme.bodyText2,
           autofocus: false,
           decoration: InputDecoration(
             hintText: 'Write a message',
+            hintStyle: widget.inputTextStyle ??
+                Theme.of(context).textTheme.bodyText2,
             prefixText: '   ',
             border: InputBorder.none,
           ),
@@ -605,16 +616,17 @@ class MessageInputState extends State<MessageInput> {
   Material _buildAttachmentButton() {
     return Material(
       clipBehavior: Clip.hardEdge,
+      type: MaterialType.transparency,
       shape: RoundedRectangleBorder(
         borderRadius: BorderRadius.circular(32),
       ),
-      color: Colors.transparent,
       child: IconButton(
         onPressed: () {
           showAttachmentModal();
         },
         icon: Icon(
           Icons.add_circle_outline,
+          color: widget.attachmentIconColor,
         ),
       ),
     );