How to blur terminal background with MATE Terminal or another terminal emulator?

YamiYukiSenpai · 1 August 2021 14:52

Is it possible to do this with MATE's Marco or another terminal?

When I was looking int Alacritty, I was trying to find a way to enable Blur from there, but the workarounds mentioned in the issue involve KWin or Compton.

anon94368460 · 1 August 2021 21:16

No. It would require adding blur algorhytm to the compositor's code.
I'm not sure how Marco works, from a quick look I think shaded_back_pixmap is what is drawn on the window when it's transparent.

github.com

mate-desktop/marco/blob/master/src/compositor/compositor-xrender.c#L186

    
      
          MetaWindow *window; /* May be NULL if this window isn't managed by Marco */
          Window id;
          XWindowAttributes attrs;
          
          
Pixmap back_pixmap;
          
          
/* When the window is shaded back_pixmap will be replaced with the pixmap
             for the shaded window. This is a copy of the original unshaded window
             so that we can still see what the window looked like when it is needed
             for the _get_window_pixmap function */
          Pixmap shaded_back_pixmap;
          
          
int mode;
          
          
gboolean damaged;
          gboolean shaped;
          
          
XRectangle shape_bounds;
          
          
MetaCompWindowType type;

anon94368460 · 2 August 2021 20:22

When you write an application that is suppose to get the screenshot of a rectangle on a screen blur it and copy it to the cairo xlib surface, it works.

But when you need to refresh the image you run into a Schrödinger's cat
The window has to be closed to make another scrot.
I don't know of a way to scrot an area (plane) behind the window with Xlib.
We need a better hacker for this.