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avik43218/theme-lgl

★ 13QMLAudience · generalComplexity · 1/5Setup · easy

TLDR

A monochrome frosted-glass visual theme for the SDDM Linux login screen that replaces the default login interface with a translucent black-and-white liquid-glass look, built with QML for KDE-based systems.

Mindmap

mindmap
  root((theme-lgl))
    What It Does
      SDDM login theme
      Liquid glass style
      Monochrome design
    Tech Stack
      QML
      SDDM
    Use Cases
      Custom login screen
      KDE desktop theming
    Installation
      Clone repo
      Copy to themes folder
      Select in settings
    Audience
      Linux desktop users
      KDE users
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Things people build with this

USE CASE 1

Replace your Linux login screen with a minimalist frosted-glass black-and-white SDDM theme instead of your distribution's default.

USE CASE 2

Contribute to an open-source QML project as a first contribution, since the maintainer actively welcomes new contributors.

Tech stack

QML

Getting it running

Difficulty · easy Time to first run · 5min

Requires SDDM installed as your display manager, installation is a manual file copy to /usr/share/sddm/themes/ with sudo.

In plain English

theme-lgl is a visual theme for SDDM, the login screen that appears on Linux systems when you start your computer. Before you reach the desktop, SDDM presents the interface where you type your username and password. This theme replaces that default interface with a monochrome, liquid-glass style: a frosted, translucent look in black and white rather than whatever your Linux distribution ships by default. The theme is written in QML, which is the interface language used by KDE, a popular Linux desktop environment. That means it is built for Linux systems that use SDDM as their display manager. Installation is manual: you clone the repository, create a specific folder at /usr/share/sddm/themes/theme-lgl, and copy all the files there. Once those files are in place, you would go into your system display manager settings and select this theme. There is no automated installer or package. The README is brief. It provides a screenshot of the finished look and a three-step installation guide. No configuration options are documented, and no dependencies or system requirements are listed beyond the implicit requirement of having SDDM installed. The project is tagged as good for first-time open-source contributors, suggesting the maintainer is open to help extending it.

Copy-paste prompts

Prompt 1
I want to install the theme-lgl SDDM theme on KDE Plasma. Walk me through the three steps from cloning the repo to selecting the theme in my display manager settings.
Prompt 2
How do I set a custom background image in an SDDM QML theme like theme-lgl? Show me which file to edit and what property to change.
Prompt 3
I installed theme-lgl by copying the files to /usr/share/sddm/themes/ but my login screen still shows the old theme. What configuration file do I need to edit to activate the new one?
Prompt 4
Explain how SDDM themes work on Linux and how QML is used to build the login screen interface, so I can start customizing theme-lgl.
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