GopherProxy

	drawbar: Don't expend effort drawing bar if it is occluded - dwm - dynamic wind…
	git clone git://git.suckless.org/dwm
	Log
	Files
	Refs
	README
	LICENSE
	---
	commit 8657affa2a61e85ca8df76b62e43cb02897d1d80
	parent a786211d6cb794fba0ea406d86002c7618998afc
	Author: Chris Down <[email protected]>
	Date: Sat, 18 Dec 2021 16:58:23 +0000

	drawbar: Don't expend effort drawing bar if it is occluded

	I noticed that a non-trivial amount of dwm's work on my machine was from
	drw_text, which seemed weird, because I have the bar disabled and we
	only use drw_text as part of bar drawing.

	Looking more closely, I realised that while we use m->showbar when
	updating the monitor bar margins, but don't skip actually drawing the
	bar if it is hidden. This patch skips drawing it entirely if that is the
	case.

	On my machine, this takes 10% of dwm's on-CPU time, primarily from
	restack() and focus().

	When the bar is toggled on again, the X server will generate an Expose
	event, and we'll redraw the bar as normal as part of expose().

	Diffstat:
	M dwm.c \| 3 +++

	1 file changed, 3 insertions(+), 0 deletions(-)
	---
	diff --git a/dwm.c b/dwm.c
	@@ -702,6 +702,9 @@ drawbar(Monitor *m)
	unsigned int i, occ = 0, urg = 0;
	Client *c;

	+ if (!m->showbar)
	+ return;
	+
	/* draw status first so it can be overdrawn by tags later */
	if (m == selmon) { /* status is only drawn on selected monitor */
	drw_setscheme(drw, scheme[SchemeNorm]);