Label: allow different values of left, top, right and bottom for padding.

[DexerBR]

Previously, padding only accepted 2 values: [padding_horizontal, padding_vertical], now it has the same behavior as padding in BoxLayout/GridLayout:

• [10] → [10, 10, 10, 10]
• [10, 20] → [10, 20, 10, 20]
• [10, 20, 30, 40] → [10, 20, 30, 40]

Test code:

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


class UI(FloatLayout):
    pass


Builder.load_string(
    """
<UI>:
    padding_left: 0
    padding_top: 0
    padding_right: 0
    padding_bottom: 0
    Label:
        text: "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
        size_hint: None, None
        center: root.center
        size: 300, 300

        text_size: self.size
        # size: self.texture_size

        # markup: True

        # base_direction: "rtl"

        halign: 'center'
        valign: 'center'

        padding: root.padding_left, root.padding_top, root.padding_right, root.padding_bottom

        canvas:
            Color:
                rgba: 0.2, 0.2, 0.8, 0.5
            Rectangle:
                pos: self.pos
                size: self.size

            Color:
                rgba: 1, 0, 0, 0.5
            Rectangle:
                pos: self.pos
                size: root.padding_left, self.height

            Rectangle:
                pos: self.x, self.top - root.padding_top
                size: self.width, root.padding_top

            Rectangle:
                pos: self.right - root.padding_right, self.y
                size: root.padding_right, self.height

            Rectangle:
                pos: self.pos
                size: self.width, root.padding_bottom

    BoxLayout:
        size_hint_y: 0.4
        orientation: "vertical"

        Slider:
            size_hint_y: None
            height: 50
            min: 0
            max: 400
            step: 1
            on_value:
                root.padding_left = self.value
        Slider:
            size_hint_y: None
            height: 50
            min: 0
            max: 400
            step: 1
            on_value:
                root.padding_top = self.value
        Slider:
            size_hint_y: None
            height: 50
            min: 0
            max: 400
            step: 1
            on_value:
                root.padding_right = self.value
        Slider:
            size_hint_y: None
            height: 50
            min: 0
            max: 400
            step: 1
            on_value:
                root.padding_bottom = self.value

"""
)


class Testapp(App):

    def build(self):
        return UI()


Testapp().run()

Maintainer merge checklist

• Title is descriptive/clear for inclusion in release notes.
• Applied a Component: xxx label.
• Applied the api-deprecation or api-break label.
• Applied the release-highlight label to be highlighted in release notes.
• Added to the milestone version it was merged into.
• Unittests are included in PR.
• Properly documented, including versionadded, versionchanged as needed.

[misl6]

I like the feature, a lot.

But, unfortunately, we should keep the padding_x and padding_y properties for a long time, and these properties can't be removed without having them deprecated first.

[misl6]

Hi @DexerBR !

The feature is great, and I really want to have it into 2.2.0 release, but we need to fix a few things regarding deprecations and migration paths.

I've left a few comments, which are trying to explain what needs to be done.

Feel free to ping me if you need any additional guidance.

[misl6]

LGTM. Thank you!