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authorbnewbold <bnewbold@robocracy.org>2016-06-12 21:52:27 -0400
committerbnewbold <bnewbold@robocracy.org>2016-06-12 21:52:39 -0400
commitb0ffd78e6ec79d8749066eb176766a443fd63fca (patch)
tree6327bc34058d194752c787656180ef6bb6e9e085 /xscreensaver_notes.txt
parent730796a80d0eca520713c20971958e778ee06b67 (diff)
downloadexuberant-hacks-b0ffd78e6ec79d8749066eb176766a443fd63fca.tar.gz
exuberant-hacks-b0ffd78e6ec79d8749066eb176766a443fd63fca.zip
doc: move xscreensaver_notes, and small update
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-
-The API is basically to grab the window ID from $XSCREENSAVER_WINDOW (could be
-hex or decimal) and draw to that. There are also the following command line
-options:
-
- -root find the "root" window for this screen and draw in it
- -window create an X window and draw in it
- -window-id <arg> draw in the given window
- -pair
-
-Also unclear how OpenGL-based hacks differ from Xlib-based hacks (in terms of
-window selection).
-
-The code in glutin (rust) that creates a Window object is:
-
- https://github.com/tomaka/glutin/blob/master/src/api/x11/window.rs
- glutin/src/api/x11/window.rs:421
-
- // getting the root window
- let root = unsafe { (display.xlib.XDefaultRootWindow)(display.display) };
- display.check_errors().expect("Failed to get root window");
-
-The code in XScreensaver "hacks" that seems to latch on to an existing window is:
-
- https://github.com/Zygo/xscreensaver/blob/master2/hacks/screenhack.c#L872
- (possible section of xscreensaver hack code dealing with window stuff?)
-
-new plan:
-- write a function that just returns a glutin::Window based on the remote X11
- window ID
-
-old plan:
-- provide an impl on glutin::Window which constructs a new one given a root
- window number; just copy/paste the new() implementation for now?
- "from_existing()"?