如何在 kivy 应用程序中正确为 MDLabel 的背景着色

Question

尝试在 kivy 应用程序中为 MDLabel（标签）的背景着色。但无法将标签的宽度调整为与文本（内容）的大小完全相同。

GridLayout:
    cols: 1
    BoxLayout:
        orientation: 'vertical'
        size_hint_y: None
        padding: dp(7)
        # pos_hint: {'top': 1}
        background_color: (1,1,0,1)
        height: self.minimum_height
        canvas.before:
            Color:
                rgba: self.background_color
            Rectangle:
                size: self.size
                pos: self.pos
        BoxLayout:
            size_hint_y: None
            # pos_hint: {'top': 1}
            height: self.minimum_height
            background_color: (0,1,0,1)
            canvas.before:
                Color:
                    rgba: self.background_color
                Rectangle:
                    size: self.size
                    pos: self.pos
            MDLabel:
                text: 'Some text'
                size_hint_y: None
                size: self.texture_size
            MDLabel:
                id: trying_to_color_background
                text: 'Width'
                halign: 'right'
                size_hint_x: None
                size: self.texture_size

得到这个 在此处输入图像描述

如果我尝试删除代码的最后一行“size: self.texture_size” ”。看起来像这样 在此处输入图像描述，

但我希望背景是文本内容的大小（大小下图中的红色边框）。如果文本中有更多字母，我希望背景更宽 在此处输入图片说明

Answer 1

将其设置为，

            ...
            MDLabel:
                id: trying_to_color_background
                text: 'Width'
                halign: 'right'
                size_hint: None, None
                size: self.texture_size
                text_size: None, None

Answer 2

lbl_state = MDLabel(text="state", md_bg_color = [.119, .136, .153, 1])

lbl_state = MDLabel(text="state", theme_text_color = "Custom", md_bg_color = [.119, .136, .153, 1])

from kivy.utils import get_color_from_hex

lbl_state = MDLabel(text="state", theme_text_color = "Custom", md_bg_color = get_color_from_hex("#7dcbb1"))

MDLabel:
   id: trying_to_color_background
   theme_text_color: "Custom"
   md_bg_color = .119, .136, .153, 1

不同颜色的示例：

0, 0, 0, 1 - dark
1, 1, 1, 1 - white
.7, .7, .7, 1 - gray
1, 0, 0, 1 - red
0, 1, 0, 1 - green
0, 0, 1, 1 - blue