Feature: Expose mouse event for user manipulation

hunkim98 commented 1 year ago

🚀 [Resolves #81 ]

Expose mouse event for user manipulation

[🎨Component] Allow onMouseDown onMouseMove onMouseUp to be exposed
- Previously mouse operations were hidden inside the Editor class. Thus, the mouse events were unable to be manipulated by users. For instance a user could not emit the inner mouse event with code
- However, allowing users to manipulate the mouse events manually was necessary especially when a user decides to overlay a DOM or a transparent screen above Dotting component
- I am currently developing a iPad app with Dotting and I needed to overlay a transparent screen on top of Dotting for manipulation.
- Now users can call the inner mouse event logic through code

[🎨Component] Refactor mouse event code for better readability
- Previously the mouse event code was difficult to understand. This complexity could perplex anyone who tries to decipher the mouse logic
- I refactored the code a little according to mouseMode and brushTool for better readability.