CODEWITHSUNDEEP
kivy
nagylzs
nagylzs

Reputation: 4180

kivy ToggleButton dispatch does not toggle

Let's say I have a ToggleButton with an id 'btn_toggle'. If I do this from code:

self.ids['btn_toggle'].dispatch('on_press')

then the on_press event is fired, and the bound event handlers are called. Everything is fine, except that the button is not toggled at all. The toggle button group is not updated. Is this a bug, or should I use a different event for this?

Upvotes: 0

Views: 235

Answers (1)

Tshirtman
Tshirtman

Reputation: 5947

The on_press event and the state property of the button are less linked than you think, in fact, they can change/be triggered pretty much independently.

If you want to change the state of the button, you just do that self.ids.btn_toggle.state = 'down', but it won't automatically create an on_press event (that is directly triggered by the click), so if that's what you want, you still need to do it.

Basically, in a ToggleButton, on_press means that the user clicked the button, if the button was already down, it won't change its state, until the user releases the touch (and then you get an on_release event, as well as an on_state event), if the button was not down, you get both an on_press and an on_state event, and you get an on_release event (only) when the user releases the touch.

It might be that you actually want to react to on_state instead of on_press, if what interests you is the state of the button, not of the touch on the button.

Upvotes: 1

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