CODEWITHSUNDEEP
pythonevent-handlingpopupkivy
Tim Cook
Tim Cook

Reputation: 665

Kivy Popup or Eventloop Interaction?

The first screen of my app has a small menu (in a gridlayout) of three buttons. Two are supposed to open popups. One for Help and one for About. The third one changes to another screen.

Only one popup works. The first one called (in the kivy file) works, the second doesn't open the popup. If I switch the order in cdd.kv, then the other one works.

Excerpt from cdd.kv:

        CDDMainMenuLayout:

            HelpButton:
                size_hint: .5,.5

            MetadataButton:
                size_hint: .5,.5
                on_release: app.root.current = 'metadata'

            AboutButton:
                size_hint: .5,.5

Excerpt from main.py:

class CDDMainMenuLayout(GridLayout):
    """
    Provides the layout for the three buttons on the home screen.
    """
    def __init__(self, *args, **kwargs):
        super(CDDMainMenuLayout, self).__init__(*args, **kwargs)
        self.rows = 1
        self.cols = 3
        self.size_hint = (.5,.5)

...

class CDDButton(Button):
    def __init__(self, **kwargs):
        super(CDDButton, self).__init__(**kwargs)
        self.text = _('Button')
        self.background_color = colors.grey2

class AboutButton(CDDButton):
    def __init__(self, **kwargs):
        super(AboutButton, self).__init__(**kwargs)
        self.text = _("About the CDD")
        self.background_color = colors.red1
        a = Popup()
        a.title = _("About Constraint Definition Designer, Version - " + __version__)
        a.content = RstDocument(source='about.rst')
        a.size_hint_x = .8
        a.size_hint_y = .8
        self.bind(on_release=a.open)

class HelpButton(CDDButton):
    def __init__(self, **kwargs):
        super(HelpButton, self).__init__(**kwargs)
        self.text = _("Help")
        self.background_color = colors.green1
        h = Popup()
        h.title = _("CDD Help")
        h.content = RstDocument(source='help.rst')
        h.size_hint_x = .8
        h.size_hint_y = .8
        self.bind(on_release=h.open)

Upvotes: 1

Views: 204

Answers (1)

inclement
inclement

Reputation: 29460

Does anything change if you add extra lines self.popup = h and self.popup = a? One possibility is that your popups are simply being garbage collected since you don't store any references to them. I'm not sure if/how this would give your particular behaviour, but it's worth a try.

Upvotes: 1

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