Kivy Python文本输入显示Bubb

Question

我试图在泡泡中显示数字键盘，以便在Kivy中输入文本。有可能吗？ 到目前为止，我已经：

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)

但泡沫不会出现。在

Answer 1

不能将小部件添加到文本输入，因为它不是布局。您应该将文本输入添加到布局中，然后将气泡添加到此布局中。试试这个：

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

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 CustomTextInputLayout(FloatLayout):
    def __init__(self, **kwargs):
        super(CustomTextInputLayout, self).__init__(**kwargs)
        self.add_widget(CustomTextInput(self))


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

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

class MyTestApp(App):
    def build(self):
        return CustomTextInputLayout()

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

Answer 2

是的，可以使用Kivy Bubble for TextInput小部件显示数字键盘。详情请参考下面的例子。在

注意：文本输入不会被过滤。在

示例

在主.py在

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()

在试验电压在

^{pr2}$

输出