Is there a way to scroll text when readonly is True

[Beebee]

I have this .kv code, it scrolls when read only is false, but when read only is true, it doesn't scroll. Please how can I make it to scroll with read only set as true. Thanks

<January1Window>:

    name: "January1"

    nameFeb: January1

    scroll:scroll
    direction:'tb-lr'
    size:(1480, 854)
    ScrollView:
            id:scroll
            bar_color:(0, 0, 0, 0.4)
            bar_inactiv_color:(0, 0, 0.7, 0.4)
            bar_margin:2
            bar_width:8
            on_scroll_x:January1.focus = True
            on_scroll_y:January1.focus = True
            TextInput:
                   size_hint:(0.8, None)
                   height: self.minimum_height
                   id:January1
                   text: root.showJanuary1()
                    readonly: True
                   do_scroll_x:True
                   do_scroll_y:True

[Elliot Garbus]

I suspect you have a different problem, readonly should not impact scrolling.

I see a few things that are errors in your kv code:

The attributes do_scroll_x, do_scroll_y are attributes of ScrollView, not TextInput.

The readonly attribute in TextInput is not properly indented.  I don’t know what layout January1Windows is derived from, I will assume it is a screen.  You have a potential problem that you are setting the size, but not setting the size_hint: None, None.  The size will be ignored if the hint is not turned off.

 

I created a small example that scrolls the textInput and switches the readonly attribute.

Here is an example:

from kivy.app import App
from kivy.lang import Builder

kv = """
BoxLayout:
    orientation: 'vertical'
    Label:
        text: 'Scroll TextInput'
        size_hint_y: None
        height: 48
    ToggleButton:
        size_hint_y: None
        height: 48
        text: 'Set Read-Only'
        on_state: text_input.readonly = True if self.state else False
    ScrollView:

        bar_color:(0, 0, 0, 0.4)
        bar_inactiv_color:(0, 0, 0.7, 0.4)
        bar_margin:2
        bar_width:8

        do_scroll_x:True
        do_scroll_y:True
        TextInput:
            id: text_input
            size_hint: .8, None
            height: self.minimum_height
            text: 'This is a long long long set of words\\n' * 100
"""


class ScrollTextApp(App):
    def build(self):
        return Builder.load_string(kv)


ScrollTextApp().run()

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[Beebee]

Before clicking the ToggleButton, the text field in not readonly but i can scroll with both the mouse wheel and keyboard arrows. After clicking the  ToggleButton, the text field becomes readonly but i can no longer scroll with the keyboard arrows only the mouse wheel scrolls.
Plese can you help me with a situation whereby the textfield will be read only and i can scroll with both the keyboard arrows and mouse wheel.

Thank you so much

[Elliot Garbus]

When you not in readonly mode, the text is scrolling with in the TextInput, you are not scrolling the ScrollView. 

I suggest you capture the keyboard arrows and use the key press to modify the scroll value (see scroll_x and scroll_y).  This will give you a consistent experience when scrolling with keys or the mouse wheel.

To view this discussion on the web visit https://groups.google.com/d/msgid/kivy-users/4137bb1a-616a-48e2-9c97-187160081e21n%40googlegroups.com.

 

[Beebee]

Thank you so much, this is really helpful but it only worked on desktop, it didn't work on mobile. Please how can i make it work on mobile phone? Thanks

[Elliot Garbus]

I have not done any mobile development.  If you share a minimal executable example I’ll be happy to take a look.

I’m not exactly sure what you are trying to achieve.  On mobile I would think it would be more natural to scroll with a finger, than typing arrows.

To view this discussion on the web visit https://groups.google.com/d/msgid/kivy-users/d623b814-b8ea-4b17-9fb0-3bb56ec8bf50n%40googlegroups.com.

 

[Bibi Eme]

Thanks a lot this was really helpful

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