How to remove the white space around showMenu - flutter

Question

There is a white space around my pop up view that is implemented in onLongPress(). Can't seem to get rid of it. The code is as follows:
Expanded(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: GestureDetector(
onTap: () {
debugPrint('Container clicked');
},
onLongPress: () {
showMenu(
context: context,
position: RelativeRect.fromLTRB(0, 0, 0.0, 0.0),
items: <PopupMenuEntry>[
PopupMenuItem(
child: getPopUpView(context),
),
],
);
},
child: Column( ...
And in the getPopUpView method we have :
Container getPopUpView(BuildContext context) {
return Container(
width: 278,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(5),
color: BPColor.grey1,
),
child: Column(
children: [
popUpViewRows(
context, AppLocalizations.of(context).markText, Assets.iconStar),
Divider(
color: BPColor.black,
),
popUpViewRows(context, AppLocalizations.of(context).archiveText,
Assets.iconArchive),
Divider(
color: BPColor.black,
),
popUpViewRows(
context, AppLocalizations.of(context).selectText, Assets.iconStar),
Divider(
color: BPColor.black,
),
popUpViewRows(context, AppLocalizations.of(context).function2Text,
Assets.iconStar),
Divider(
color: BPColor.black,
),
popUpViewRows(context, AppLocalizations.of(context).deleteText,
Assets.iconDelete),
],
),
);
}
In the popUpViewRows method we have :
GestureDetector popUpViewRows(BuildContext context, String text, String icon) {
return GestureDetector(
onTap: () {
debugPrint('$text clicked');
},
child: Row(
children: [
Center(
child: Text(
text,
style: BPFonts.popUpViewtextStyle,
),
),
Spacer(),
SvgPicture.asset(
icon,
),
],
),
);
}
The Output looks like this:
As you see, There is a white space around the popup view. I am not sure why this border looking thing is present. And showMenu does not seem to have a border attribute.

Answer 1

Okay. I was able to figure it out. Simpler than I thought.
All I had to do was add a color attribute to the showMenu, can't believe it took me so long to think of that.
So I did this :
showMenu(
color: BPColor.grey1,
context: context,
position: RelativeRect.fromLTRB(0, 0, 0.0, 0.0),
items: <PopupMenuEntry>[
PopupMenuItem(
child: getPopUpView(context),
),
],
);
},