Show border/shadow around icons

[naveensingh]

Checklist

• [X] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [X] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• [X] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• [X] I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• [X] This issue contains only one feature request.
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Feature description

Add a thin border around around app icons. It is there in almost every launcher app.

Why do you want this feature?

Many app icons have a white background and a border will help distinguish the icon from the drawer background.

Additional information

There is no official API but the current icon shape can be fetched like this:

val iconMask = AdaptiveIconDrawable(ColorDrawable(BLACK), ColorDrawable(BLACK)).iconMask

Then we'll have to scale the mask, draw the shadow, and clip the icon drawables so they are the same shape as the icon mask.

Related:

• https://cs.android.com/android/platform/superproject/main/+/main:frameworks/base/graphics/java/android/graphics/drawable/AdaptiveIconDrawable.java;l=158-173
• https://www.reddit.com/r/Fossify/comments/1gwr01c/comment/lyedc1q/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

This must be handled carefully to keep things smooth.