Fix: Add dynamic height constraints to prevent bottom sheet overflow

[prateek-kalwar-95]

Description

Implemented dynamic height calculation for the Add Task bottom sheet to prevent overflow on small screens when the keyboard opens. The sheet now adapts intelligently to available space and allows smooth scrolling through all form fields.

• Added dynamic BoxConstraints that calculate available screen space based on keyboard visibility
• Bottom sheet now uses 80% of screen height when keyboard is closed
• When keyboard opens, sheet adjusts to remaining space minus 50% of keyboard height
• Added BouncingScrollPhysics for smoother scrolling experience

Fixes #534

Screenshots

before->

After ->

When keyboard closed ->

Checklist

• Tests have been added or updated to cover the changes
• Documentation has been updated to reflect the changes
• Code follows the established coding style guidelines
• All tests are passing

[prateek-kalwar-95]

@SGI-CAPP-AT2 , could you please review this PR? The previous PR addressing this issue got mixed with #541, so I've created a separate one for clarity.

[SGI-CAPP-AT2]

@prateek-kalwar-95, add screenshot with keyboard closed

[prateek-kalwar-95]

@SGI-CAPP-AT2 , Added it.

[SGI-CAPP-AT2]

@prateek-kalwar-95 , I think the the gap you're having when keyboard opened is too large it should be equal to height of status bar so that more task inputs can be shown.

[prateek-kalwar-95]

@SGI-CAPP-AT2 , Yes, we can do that, but the save button is just below the status bar, which may make it difficult for users to tap.

[prateek-kalwar-95]

So we can put it at least 50px below the status bar.

[SGI-CAPP-AT2]

rn it overlaps with status bar, instead keep offset from top equal to height of status bar so it wont overlap.

[SGI-CAPP-AT2]

So we can put it at least 50px below the status bar.
@prateek-kalwar-95, make immediate after status bar.

[prateek-kalwar-95]

@SGI-CAPP-AT2 , For me, the height of the status bar is coming as zero, and this is happening because AddTaskBottomSheet is built inside a Container.

[SGI-CAPP-AT2]

@prateek-kalwar-95
Tried this?

final height = MediaQuery.viewInsetsOf(context).top;

[prateek-kalwar-95]

@SGI-CAPP-AT2 ,tried but still coming zero.

[SGI-CAPP-AT2]

@SGI-CAPP-AT2 ,tried but still coming zero.

@prateek-kalwar-95,
Try This may be

final height = MediaQuery.paddingOf(context).top;

[prateek-kalwar-95]

final height = MediaQuery.paddingOf(context).top;

@SGI-CAPP-AT2 , This is also returning zero.