DynamicWallpaper is a small Java program for playing a video as a wallpaper and settings up dynamic colors (e.g. based on your open processes or windows).
Example of a color changing wave as wallpaper
First of all make sure that your platform is supported (or just don't care and go experiment a bit 😉).
| OS | 32-bit | 64-bit |
|---|---|---|
| Windows 10 | ❓not tried | ✔️yes |
| Windows 8 | ❓not tried | ✔️mostly |
| Linux (KDE Plasma) | ❓not tried | |
| Linux (GNOME) | ❓not tried | ❌no |
Note: It's not very likely that it will work on 32-bit systems if it doesn't work on 64-bit systems.
To build the application from source make sure you have a JDK (at least 8) installed and properly set up. It's all just about Gradle working well, so don't worry.
Now, download the source from GitHub using git clone
(alternatively you could also download and extract a zipped version of the repository):
git clone https://github.com/JnCrMx/DynamicWallpaperThen build the application using Gradle:
Windows (in CMD)
gradlew.bat buildUnix (in bash)
chmod +x gradlew
./gradlew buildThere are different ways to launch the application Gradle has built in the previous step.
You can find the shadowJar in build/libs/DynamicWallpaper-<version>-all.jar.
It already contains all required libraries.
Simply copy it to any location you like and double-click it to launch.
Besides the shadowJar there are also distribution archives. Those also contain all libraries, but must be extracted before using the application.
You can find them in build/distributions/DynamicWallpaper-1.0.zip or build/distributions/DynamicWallpaper-1.0.tar.
Just extract them to any directory you want.
After extracting them, just open the bin/-directory and then
execute DynamicWallpaper.bat (for Windows) or DynamicWallpaper (for Unix).
You can also ask Gradle to run the application:
Windows (in CMD)
gradlew.bat runUnix (in bash)
chmod +x gradlew
./gradlew runIf you use this way, you don't need to rebuild the program if the source changes. Building the program is included in this command.
After launching the application, just left-click the icon in your system tray to open the configuration window.
Now you can configure your wallpaper. A good first step is to select a video file (or URL). More information about the color modes and different configurations will be provided soon, so for now you need to experiment a bit 😄.
Remember to click "Apply" to save and apply your configuration. Using "Exit" will also allow you to save the configuration; just don't terminate the application forcefully.
The basic idea is to put a window between your desktop background and the desktop symbols. In this window we can then do basically anything we want.
On Windows there is a window called "WorkerW" which can be used as a parent for our window.
Screenshot from WinSpy with WorkerW and our frame highlighted
The whole procedure is from a very similar project I really recommend having a look at: https://github.com/Francesco149/weebp
This program just replicates the steps in Java using JNA to invoke the required native functions.
For code and detailed information have a look at src/main/java/de/jcm/dynamicwallpaper/Utils.java.
I've experimented a bit on Linux and searched for ways to put a window as a wallpaper, but at least with KDE Plasma none of them really worked.
This is because the desktop background and the desktop icons appear to be in the same windows. Hence, it seems to be impossible to put a window between them.
We change the property _NET_WM_WINDOW_TYPE of our window to
_NET_WM_WINDOW_TYPE_DESKTOP which makes it appear as the desktop window.
Sadly our window is still above the original desktop window and therefore
covers all symbols and prevents you from interacting with your desktop.
Making sure our window is below the desktop seems hard and wouldn't really help, because then the desktop window (which included the desktop background) would cover our window instead.
I need to experiment a bit more; maybe setting a transparent wallpaper could fix this.
The application uses an icon in the system tray which you can click to open or close the configuration window.
Ubuntu/GNOME does not support the system tray anymore.
There might be some plugins providing a system tray, but I haven't tested them yet.