why constraint PopupMenu's min width?

[carmen che]

Hi, everyone,

recently i work on creating a popup menu, but seems the default popup menu created by showMenu() function is too wide, it is not what i want. 

by tracking the source code, I find the following in popup_menu.dart:

const double _kMenuMaxWidth = 5.0 * _kMenuWidthStep;
const double _kMenuMinWidth = 2.0 * _kMenuWidthStep;
const double _kMenuVerticalPadding = 8.0;
const double _kMenuWidthStep = 56.0;
...
...
class _PopupMenu<T> extends StatelessWidget {
    final Widget child = ConstrainedBox(
      constraints: const BoxConstraints(
        minWidth: _kMenuMinWidth,
        maxWidth: _kMenuMaxWidth,
      ),
...
...
}

it constraints popup menu's min width to 2.0 x 56.0, max width to 5.0 x 56.0.

so if i want to customize  popup menu's width outside of the flutter source code, what should I do? if there are any ways to implement this?

btw, why set these constraints to popup menu?

[Souvik Dutta]

Probably using a constrained box as a parent to the popup widget.

Souvik flutter dev

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[carmen che]

Thanks Souvik for your reply.

but as i know, if there are 2 constrained boxs as parents, it will apply to the one which minWidth or minHeight is bigger, it is exactly not what i want, well, i wanna make popup menu  width smaller than what constraint in flutter.

also, i am using showMenu(), it returns a Future value, not a widget, so it is not easy to wrap pupup menu widget with  constrained box.

[Souvik Dutta]

Oh then I guess you should make changes in the package to suit your needs. 

Souvik flutter dev

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