Extend Response with context_menu_custom method

[WojciechMula]

Method context_menu_custom allows to pass set of PointerButtons, that activate the context menu. This let to show menu on clicks by desired set of buttons/

Example:

use egui::PointerButtonSet;
use egui::PointerButtons;

let left_or_right = PointerButtonSet::from([
    PointerButtons::Primary,
    PointerButtons::Secondary,
]);

let response = ui.add(Label::new("Click me!").sense(Sense::click()));
response.context_menu_custom(left_or_right, |ui| {
    if ui.button("Close the menu").clicked() {
        ui.close_menu();
    }
});

[enomado]

Hi there. I, as you, want more control to configure context menu apearing. I made some variants of possible API

#4162

Your feature could be made if there will be fully custom menu-starting function, which is not dependent on response

[emilk]

What is the use case here? You want to activate a menu when both primary and secondary buttons are pressed?

If so, wouldn'ty if response.primary_clicked() && response.secondary_clicked() { /* show menu */ } be a better approach?

[WojciechMula]

What is the use case here? You want to activate a menu when both primary and secondary buttons are pressed?

If so, wouldn'ty if response.primary_clicked() && response.secondary_clicked() { /* show menu */ } be a better approach?

Yes, this is my goal, to show menu on some non-standard event. But I see my solution is too restrictive, what if somebody wanted to open menu on key.