如何在kivy中更改弹出颜色

问题描述

在 Kivy 中，Popup 显示为灰色，应该更改什么使其变为红色

In Kivy, Popup appears in grey color, what should be changed to make it red color

我的弹出代码:

class MyPopup(Popup):
    def show_popup(self):
        content = BoxLayout(orientation="vertical")
        content.add_widget(Label(text="Game Over", font_size=20))
        mybutton_cancel = Button(text="Cancel", size_hint_y=None)
        content.add_widget(mybutton_cancel)

        mypopup = Popup(content = content,              
            title = "oops", 
            auto_dismiss = False,         
            size_hint = (.5, .5))
        mybutton_cancel.bind(on_release=mypopup.dismiss)
        mypopup.open()

我希望，很明显我在谈论弹出颜色，而不是弹出窗口或弹出文本颜色后面的背景屏幕颜色.我说的是弹出矩形的颜色.请指教.

I hope , it is clear that i am talking about popup color and not color of background screen behind popup or popup text color. I am talking about the color of popup rectangle. Please advice.

推荐答案

Popup 作为 ModalView 的子项，有一个名为 StringProperty 的 >background，它指向来自 atlas 的图像.默认的是 atlas://data/images/defaulttheme/modalview-background.在这里，我将其更改为默认按钮图像之一:

Popup as a child of ModalView has a StringProperty called background, which points to an image from at atlas. The default one is atlas://data/images/defaulttheme/modalview-background. Here I changed it to one of the default button images:

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.popup import Popup
from kivy.uix.label import Label

class TestApp(App):
    def build(self):
        return  Button(text="show", on_press=self.anim_btn)

    def anim_btn(self, *args):
        popup = Popup(title='Test popup', 
            content=Label(text='Hello world'), 
            size_hint=(None, None), 
            size=(400, 400),
            background = 'atlas://data/images/defaulttheme/button_pressed'
        ).open()

if __name__ == "__main__":
    TestApp().run()

此默认主题位于此处:https://github.com/kivy/kivy/blob/master/kivy/data/images/defaulttheme-0.png 为了自定义您的弹出窗口(以及例如按钮)，您可以创建自己的图集(http://kivy.org/docs/api-kivy.atlas.html).

This default theme resides here: https://github.com/kivy/kivy/blob/master/kivy/data/images/defaulttheme-0.png In order to customize your popup (and also, for example, buttons) you can create your own atlas (http://kivy.org/docs/api-kivy.atlas.html).

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