title: How to implement a Chat bubble shaped widget in flutter
body: <p>I want to design a widget of shape of a chat bubble where one corner is pinned and its height should adjust to the lines of the text? For now I'm using ClipRRect widget with some borderRadius. But I want one corner pinned. Any suggestions ? 
  <a href="https://i.stack.imgur.com/sfSuW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sfSuW.png" alt="Chat bubble shape"></a></p>
  
  <p><strong>UPDATE</strong></p>
  
  <p>I know this can be done using a stack but I'm looking for a better solution since I have to use it many times in a single view and using many stacks might affect the performs. ( correct me here if I'm wrong )</p>