Camera UI Concept

Implemented Animated FAB widget.
Implemented Circular Slider for Zoom.

Points to note

Making button of bottom-right corner improves one-hand thumb usage.
More preview area.
Long Tap for extending FAB.
Single Tap to click an image.

Packages used

radial_button 1.0.0
sleek_circular_slider
provider: ^2.0.1
camera: ^0.5.7+1