Material-ish window decoration theme for KWin

This hides the AppMenu icon button and draws the menu in the titlebar. It also includes a search button to find actions. It works on both X11 and Wayland. On Wayland, GTK apps don't export the menu. You need to start them with GDK_BACKEND=x11 environment variable.

Make sure you add the AppMenu button in System Settings > Colors & Themes > Window Decorations > Configure Titlebar Buttons….

There, by clicking the pencil icon that is displayed when you select the Material theme, you can modify various aspects of the decoration, both in terms of appearance and behaviour. For example, you can transform it into a hamburger menu, disable the search function, and even decide whether to include inactive actions (those that are greyed out) in the search results.

git clone https://github.com/guiodic/material-decoration.git
cd material-decoration
mkdir build
cd build
cmake .. -DQT_MAJOR_VERSION=6 -DQT_VERSION_MAJOR=6
make
sudo make install

for Arch and derivatives, please install the AUR package material-kwin-decoration-git

NOTE: the master branch is aligned with the latest Plasma version. For earlier ones, see the other branches.

....

TODO/Bugs (Issue #1):

• Open Submenu on Shortcut (eg: Alt+F)
• Display mnemonics when holding Alt