Kivy Python TextInput显示气泡 [英] Kivy Python TextInput display Bubble

问题描述

我试图在气泡中为Kivy中的TextInput显示数字键盘.是否有可能? 到目前为止，我有:

I am trying to display numeric keyboard in bubble for TextInput in Kivy. Is it possible? So far I have:

Builder.load_string('''
<NumericKeyboard>
size_hint: (None, None)
size: (160, 120)
pos_hint: {'center_x': .5, 'y': .6}
BubbleButton:
    text: 'Cut'
BubbleButton:
    text: 'Copy'
BubbleButton:
    text: 'Paste'
''')

class NumericKeyboard(Bubble):
    pass

class CustomTextInput(TextInput):
def __init__(self, **kwargs):
    super(CustomTextInput, self).__init__(**kwargs)

def on_focus(self, instance, value):
    self.bubb = NumericKeyboard()
    self.add_widget(self.bubb)

但是气泡不会显示.

推荐答案

是的，可以使用Kivy Bubble for TextInput小部件显示数字键盘.有关详细信息，请参见下面的示例.

Yes, it is possible to display numeric key pad using Kivy Bubble for TextInput widget. Please refer to the example below for details.

注意: 文本输入未过滤.

Note: The text input is not filtered.

from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.bubble import Bubble, BubbleButton
from kivy.uix.label import Label
from kivy.properties import ObjectProperty
from kivy.lang import Builder


class CustomBubbleButton(BubbleButton):
    pass


class NumericKeyboard(Bubble):
    layout = ObjectProperty(None)

    def __init__(self, **kwargs):
        super(NumericKeyboard, self).__init__(**kwargs)
        self.create_bubble_button()

    def create_bubble_button(self):
        numeric_keypad = ['7', '8', '9', '4', '5', '6', '1', '2', '3', '', '0', '.']
        for x in numeric_keypad:
            if len(x) == 0:
                self.layout.add_widget(Label(text=""))
            else:
                bubb_btn = CustomBubbleButton(text=str(x))
                self.layout.add_widget(bubb_btn)


class BubbleShowcase(FloatLayout):
    text_input = ObjectProperty(None)

    def show_bubble(self, *l):
        if not hasattr(self, 'bubb'):
            self.bubb = bubb = NumericKeyboard()
            self.bubb.arrow_pos = "bottom_mid"
            self.add_widget(bubb)


Builder.load_file("test.kv")


class TestBubbleApp(App):
    title = "Numeric Key Pad - Using Bubble"

    def build(self):
        return BubbleShowcase()


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

test.kv

#:kivy 1.10.0

<CustomBubbleButton>:
    on_release:
        app.root.text_input.text += self.text


<NumericKeyboard>:
    layout: layout

    size_hint: (None, None)
    size: (160, 120)
    pos_hint: {'center_x': .5, 'y': .6}

    GridLayout:
        id: layout
        cols: 3

<BubbleShowcase>:
    text_input: text_input

    canvas:
        Color:
            rgba: 0, 1, 1, 1
        Rectangle:
            size: self.width, self.height
    TextInput:
        id: text_input
        pos_hint: {'center_x': .5, 'y': .54}
        size_hint: (0.2, 0.06)
        cursor_blink: True
        font_size: 20
        multiline: False
        on_focus:
            root.show_bubble()

输出

Output

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