Lilac, a Qt6 theme inspired by the Orchis GTK theme by Vinceliuice

A native Qt6 application style for KDE Plasma that provides modern widget styling without relying on Kvantum. This theme fully supports KDE color schemes, automatically adapting to your system colors.

This is strictly an application style - it handles only the appearance of Qt widgets and interface elements. It does not include icons, color schemes, or window decorations. Users are encouraged to pair it with their preferred color scheme, icon theme, window decorations…

Screenshot: Icons: Vimix, ColorScheme: FluentDark/FluentLight, Window Decorations: Klassy, Font: Inter SemiBold

KStyle provides enhanced integration with KDE Plasma. If you don't use KStyle, QCommonStyle is used. KStyle is also used for styling some KDE frameworks widgets.

• Default behavior: OFF (i.e. KStyle will be used)
• Available options:
  • -DNO_KSTYLE=ON: Doesn't use KStyle

Recommendation: Use KStyle with KDE Plasma, otherwise probably use QCommonStyle (KStyle has a lot of dependencies)

KColorScheme extends QPalette functionality to provide better color consistency across KDE applications.

• Default behavior: OFF (i.e. KColorScheme will be used)
• Available options: -DNO_KCOLORSCHEME=ON: Disables KColorScheme support

Note: KColorScheme is recommended for better color consistency, but can be disabled to reduce dependencies.

Whether to enable settings, this requires QDbus and KConfig as dependencies. When enabled, two additional targets will be created, a standalone settings app and a library to integrate with the KDE plasma systemsetings.

• Default behavior: OFF (i.e. Settings will be enabled)
• Available options: -DNO_SETTINGS=ON: Disables settings

KWindowSystem is a library abstracting the window system. This style uses KWindowSystem to create a blur behind menus. Note that your system may not support this way of blurring behind windows/menus.

• Default behavior: OFF (i.e. KWindowSystem will be included)
• Available options: -DNO_KWINDOWSYSTEM=ON: Disables KWindowSystem

Note: this theme only supports Qt >= 6.6.0

1. Install dependencies

   All Dependencies:

   Build: git cmake gcc-c++

   Run:
   cmake(Qt6Widgets) cmake(Qt6Gui), KStyle:  cmake(KF6FrameworkIntegration), KColorScheme: cmake(KF6ColorScheme), Settings: cmake(KF6Config) cmake(Qt6DBus), KWindowSystem: cmake(KF6WindowSystem)

   OpenSUSE:

   sudo zypper in git cmake gcc-c++ 'cmake(Qt6Widgets)' 'cmake(Qt6Gui)' 'cmake(KF6FrameworkIntegration)' 'cmake(KF6ColorScheme)' 'cmake(KF6Config)' 'cmake(Qt6DBus)' 'cmake(KF6WindowSystem)'

   Fedora:

   sudo dnf install git cmake gcc-c++ 'cmake(Qt6Widgets)' 'cmake(Qt6Gui)' 'cmake(KF6FrameworkIntegration)' 'cmake(KF6ColorScheme)' 'cmake(KF6Config)' 'cmake(Qt6DBus)' 'cmake(KF6WindowSystem)'

   Ubuntu/Debian:

   sudo apt install git cmake g++ qt6-base-dev libkf6style-dev libkf6colorscheme-dev libkf6config-dev libkf6windowsystem-dev

   Arch:

   sudo pacman -Sy git cmake gcc qt6-base frameworkintegration kcolorscheme kconfig kwindowsystem

2. Clone the repository

   git clone https://github.com/zalesyc/lilac.git && cd lilac

3. Configure

   3.1 create the build directory

   mkdir build && cd build

   3.2 Configure the project with cmake

   here you can add the options from the Build Configuration section

   cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr ..

4. Build and Install

   4.1 Compile

   cmake --build . --parallel

   4.2 Install

   sudo cmake --install .

The style can now be selected from system settings

• Right-to-left language support
• Mnemonics