[hackers] [dwm] Make floating windows spawn within the monitor's window area || Stein

[git]

commit 44adafe0069e73aa03a3829d7bb39591cd8b3f1d
Author:     Stein <bakk...@gmail.com>
AuthorDate: Thu Aug 11 11:15:55 2022 +0200
Commit:     Hiltjo Posthuma <hil...@codemadness.org>
CommitDate: Fri Aug 12 09:02:34 2022 +0200

    Make floating windows spawn within the monitor's window area
    
    This is a follow-up on this thread:
    https://lists.suckless.org/hackers/2208/18462.html
    
    The orginal code had constraints such that if a window's starting
    attributes (position and size) were to place the window outside of
    the edges of the monitor, then the window would be moved into view
    at the closest monitor edge.
    
    There was an exception to this where if a top bar is used then the
    window should not obscure the bar if present, which meant to place
    the window within the window area instead.
    
    The proposed change here makes it the general rule that floating
    windows should spawn within the window area rather than within the
    monitor area. This makes it simple and consistent with no
    exceptions and it makes the intention of the code clear.
    
    This has the benefit of making the behaviour consistent regardless
    of whether the user is using a top bar or a bottom bar.
    
    Additionally this will have an effect on patches that modify the
    size of the window area. For example if the insets patch is used to
    reserve space on the left hand side of the monitor for a dock or a
    vertical bar then new floating clients will not obscure that area.

diff --git a/dwm.c b/dwm.c
index 87d0ada..f2bc4ba 100644
--- a/dwm.c
+++ b/dwm.c
@@ -1044,11 +1044,11 @@ manage(Window w, XWindowAttributes *wa)
                applyrules(c);
        }
 
-       if (c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
-               c->x = c->mon->mx + c->mon->mw - WIDTH(c);
-       if (c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
-               c->y = c->mon->my + c->mon->mh - HEIGHT(c);
-       c->x = MAX(c->x, c->mon->mx);
+       if (c->x + WIDTH(c) > c->mon->wx + c->mon->ww)
+               c->x = c->mon->wx + c->mon->ww - WIDTH(c);
+       if (c->y + HEIGHT(c) > c->mon->wy + c->mon->wh)
+               c->y = c->mon->wy + c->mon->wh - HEIGHT(c);
+       c->x = MAX(c->x, c->mon->wx);
        c->y = MAX(c->y, c->mon->wy);
        c->bw = borderpx;