compose-drag-n-design

A hackathon project for a UI sketch designer made in Compose.

This is a project to get more familiarized with Jetpack Compose.

It explores how to:

• implement a reusable drag-n-drop.
• create a UI based on a dynamic specification.

Drag and drop

The drag and drop feature was tested first in the DragAndDropScreen.kt. You can switch MainActivity to call that instead of the BuildScreen.kt.

UI builder

• Still some changes are needed to separate better the model+events from the UI.
• Several approaches were tried.
• One particularity of the approach I finally use (a change in an element changes all its parents) forces the whole UI to recompose which is a desired effect as containers depend on their children for layout.
• Said in other way: performance is not an issue/concern in this very particular case.
• Also: don't take this code as gold-standard. I'm not (yet!) a Compose expert and some good practices might been missing.