closing the bubble

[husam alkdary]

how I can close the bubble when I click one of the bubble buttons or when I end the highlight of the text if that's possible 

the kv file 

FloatLayout:
 BoxLayout:
 orientation: 'vertical'
 Button:
 size_hint_y: None
 height: 48
 text: 'paste'
 on_press: app.root.ids.TextInput_id.paste()


 TextInput:
 height: self.minimum_height
 width: self.height
 halign: 'center'
 id:TextInput_id
 text: 'My unicode string'
 on_selection_text: if self.focus: app.show_bubble()




<cut_copy_paste>
 size_hint: (None, None)
 size: (140, 60)
 pos: app.root.ids.TextInput_id.cursor_pos
 arrow_pos: 'bottom_left'
 id: cut_copy_paste_id
 BubbleButton:
 text: 'Delete'
 color: 1,0,0,1
 on_press : app.root.ids.TextInput_id.delete_selection(from_undo=False)
 on_press : app.remove_bubble()

 BubbleButton:
 text: 'Cut'
 color: 0,1,0,1
 on_press : app.root.ids.TextInput_id.cut()

 BubbleButton:
 text: 'Copy'
 color: 0,0,1,1
 on_press : app.root.ids.TextInput_id.copy(data=app.root.ids.TextInput_id.selection_text)

and the python file 

contain 

class cut_copy_paste(Bubble):
 pass

and the app class that contains this two function the show woks fine and open the bubble but the remove does not close it 

def show_bubble(self):
 self.root.add_widget(cut_copy_paste())

def remove_bubble(self):
 self.root.remove_widget(cut_copy_paste())

 

[Elliot Garbus]

Bubble opens on selection, closes when selection is ‘’

 

from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.lang import Builder
from kivy.uix.bubble import Bubble

kv = '''
<CutCopyPaste>:
    size_hint: (None, None)
    size: (160, 120)
    pos_hint: {'center_x': .5, 'y': .6}
    BubbleButton:
        text: 'Cut'
        on_release: 
            print('Cut Selected')
            app.root.ids.ti.focus = True
    BubbleButton:
        text: 'Copy'
        on_release:
            print('Copy Selected')
            app.root.ids.ti.focus = True
    BubbleButton:
        text: 'Paste'
        on_release: 
            print('Copy Selected')
            app.root.ids.ti.focus = True 
               
BubbleShowcase:
    TextInput:
        id: ti
        on_selection_text:
            if self.selection_text == '': app.root.dismiss_bubble()
            if self.selection_text != '': app.root.show_bubble()
'''


class CutCopyPaste(Bubble):
    pass


class BubbleShowcase(FloatLayout):
    def __init__(self, **kwargs):
        self.bubb = None
        super().__init__(**kwargs)

    def show_bubble(self, *l):
        if not self.bubb:
            self.bubb = CutCopyPaste()
            self.add_widget(self.bubb)
            self.bubb.arrow_pos = 'top_mid'

    def dismiss_bubble(self):
        if self.bubb:
            self.remove_widget(self.bubb)
            self.bubb = None


class TestBubbleApp(App):

    def build(self):
        return Builder.load_string(kv)


if __name__ == '__main__':
    TestBubbleApp().run()

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[husam alkdary]

what's the use of this part from the code 

class BubbleShowcase(FloatLayout):
    def __init__(self, **kwargs):
        self.bubb =

None
        super().__init__(**kwargs) when I remove it the bubble open but its not close

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[Elliot Garbus]

def __init__(self, **kwargs):
        self.bubb = None
        super().__init__(**kwargs)

 

The code above creates an instance variable self.bubb.  An instance variable will be created for every instance of the class.  The call to super().__init__ is required by kivy.  We are overloading the __init__() method of the parent class, in this case FloatLayout, so we need to call the parents __init__(), and pass along the arguments.

 

In:

    def show_bubble(self, *l):
        if not self.bubb:                         # only create the class if it doesn’t exist
            self.bubb = CutCopyPaste()
            self.add_widget(self.bubb)
            self.bubb.arrow_pos = 'top_mid'

We instance the class, and save it into self.bubb.  self.bubb now holds the CutCopyPaste instance we created.

 

    def dismiss_bubble(self):
        if self.bubb:                                    # only remove the widget if it exsits.
            self.remove_widget(self.bubb)  # remove the widget
            self.bubb = None                        # set self.bubb to None so the test in show_bubble will work.

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[husam alkdary]

what's the use of *l here because I remove it and every thing works fine ??

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[Elliot Garbus]

That’s a typo.

 

The code still works because it is the same as *args, meaning the method takes a variable number of positional arguments.

https://realpython.com/python-kwargs-and-args/

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[husam alkdary]

it's possible to size hint with bubble widget because when I use the fixed size I it's ok on the pc but in the phone the font size becomes much bigger the widget so it's possible to even to make font size relative to the bubble widget because I tried it but is not work for me  

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[Elliot Garbus]

The bubble is derived from GridLayout, you can try using some of the GridLayout Attributes.  From the docs:

 

 

Post a small example if want some help sizing the text.  Are you using sp() from metrics?

https://kivy.org/doc/stable/api-kivy.metrics.html

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[husam alkdary]

I mean why I can't use this method to

font_size: self.width*.2

 to determine the font size inside the 

<cut_copy_paste>:

class ?
 

 

[Elliot Garbus]

You can do that.  That will scale the font size, based on the width.

This code will scale the font_size based on the width of the bubble.

 

from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.lang import Builder
from kivy.uix.bubble import Bubble

from kivy.properties import NumericProperty

kv = '''
<CutCopyPaste>:
    size_hint: (None, None)
    size: (root.width, 120)

    pos_hint: {'center_x': .5, 'y': .6}
    BubbleButton:

        id: cut
        text: 'Cut'
        font_size: root.font_size

        on_release: 
            print('Cut Selected')
            app.root.ids.ti.focus = True
    BubbleButton:

        id: copy
        text: 'Copy'
        font_size: root.font_size

        on_release:
            print('Copy Selected')
            app.root.ids.ti.focus = True
    BubbleButton:

        id:paste
        text: 'Paste'
        font_size: root.font_size

        on_release: 
            print('Copy Selected')
            app.root.ids.ti.focus = True 
               
BubbleShowcase:
    TextInput:
        id: ti
        on_selection_text:
            if self.selection_text == '': app.root.dismiss_bubble()
            if self.selection_text != '': app.root.show_bubble()
'''

class CutCopyPaste(Bubble):
    font_size = NumericProperty(12)
    width = NumericProperty(160)

    def on_kv_post(self, base_widget):
        while self.ids.paste.texture_size[0] < self.width/3 - 5:    # Scale up
            self.font_size += 1
            self.ids.paste.texture_update()
        while self.ids.paste.texture_size[0] > self.width / 3 - 5:  # Scale down
            self.font_size -= 1
            self.ids.paste.texture_update()

class BubbleShowcase(FloatLayout):
    def __init__(self, **kwargs):
        self.bubb = None
        super().__init__(**kwargs)

    def show_bubble(self, *l):
        if not self.bubb:
            self.bubb = CutCopyPaste()
            self.add_widget(self.bubb)
            self.bubb.arrow_pos = 'top_mid'

    def dismiss_bubble(self):
        if self.bubb:
            self.remove_widget(self.bubb)
            self.bubb = None


class TestBubbleApp(App):

    def build(self):
        return Builder.load_string(kv)


if __name__ == '__main__':
    TestBubbleApp().run()

 

 

 

From: husam alkdary
Sent: Wednesday, May 20, 2020 9:46 AM
To: Kivy users support
Subject: Re: -- SPAM --[kivy-users] closing the bubble

 

I mean why I can't use this method to

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