[FileAttachment] Fix trailing icon padding and minor fixes

Signed-off-by: Sahil Kumar <[email protected]>

lib/src/file_attachment.dart

@@ -72,6 +72,7 @@ class _FileAttachmentState extends State<FileAttachment> {
               : null,
         ),
         child: Row(
+          crossAxisAlignment: CrossAxisAlignment.start,
           children: [
             Container(
               child: _getFileTypeImage(),
@@ -79,9 +80,7 @@ class _FileAttachmentState extends State<FileAttachment> {
               width: 33.33,
               margin: EdgeInsets.all(8.0),
             ),
-            SizedBox(
+            SizedBox(width: 8.0),
-              width: 6.0,
-            ),
             Expanded(
               child: Column(
                 mainAxisAlignment: MainAxisAlignment.center,
@@ -93,12 +92,13 @@ class _FileAttachmentState extends State<FileAttachment> {
                     maxLines: 1,
                     overflow: TextOverflow.ellipsis,
                   ),
-                  SizedBox(
+                  SizedBox(height: 3.0),
-                    height: 3.0,
-                  ),
                   Text(
                     '${getSizeText(widget.attachment.extraData['file_size'])}',
-                    style: StreamChatTheme.of(context).textTheme.body.copyWith(
+                    style: StreamChatTheme.of(context)
+                        .textTheme
+                        .footnote
+                        .copyWith(
                             color: StreamChatTheme.of(context)
                                 .colorTheme
                                 .black
@@ -107,18 +107,21 @@ class _FileAttachmentState extends State<FileAttachment> {
                 ],
               ),
             ),
-            Column(
+            SizedBox(width: 8.0),
-              children: [
+            Material(
-                widget.trailing ??
+              type: MaterialType.transparency,
+              child: widget.trailing ??
                   IconButton(
                     icon: StreamSvgIcon.cloud_download(
                       color: StreamChatTheme.of(context).colorTheme.black,
                     ),
+                    padding: const EdgeInsets.all(8),
+                    visualDensity: VisualDensity.compact,
+                    splashRadius: 16,
                     onPressed: () {
                       launchURL(context, widget.attachment.assetUrl);
                     },
                   ),
-              ],
             ),
           ],
         ),