button tweak (#3539)

* button tweak

* changelog

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## Unreleased
+
+### Changed
+
+- Buttons will now display multiple lines, and have auto height https://github.com/Textualize/textual/pull/3539
+
 ## [0.40.0] - 2023-10-11
 
 - Added `loading` reactive property to widgets https://github.com/Textualize/textual/pull/3509

src/textual/widgets/_button.py

@@ -3,6 +3,8 @@
 from functools import partial
 
 import rich.repr
+from rich.console import RenderableType
+from rich.padding import Padding
 from rich.text import Text, TextType
 from typing_extensions import Literal, Self
 
@@ -33,7 +35,7 @@ class Button(Static, can_focus=True):
     Button {
         width: auto;
         min-width: 16;
-        height: 3;
+        height: auto;
         background: $panel;
         color: $text;
         border: none;
@@ -228,10 +230,8 @@ def validate_label(self, label: TextType) -> TextType:
             return Text.from_markup(label)
         return label
 
-    def render(self) -> TextType:
-        label = Text.assemble(" ", self.label, " ")
-        label.stylize(self.text_style)
-        return label
+    def render(self) -> RenderableType:
+        return Padding(self.label, (0, 1), expand=False)
 
     async def _on_click(self, event: events.Click) -> None:
         event.stop()