From fdff840db02a5d403e1423b070fd43cbbc52a07c Mon Sep 17 00:00:00 2001
From: Carl Worth <cworth@cworth.org>
Date: Thu, 7 Nov 2013 13:13:22 -0800
Subject: [PATCH] acre-x: Don't redraw for unrecognized keypresses.

Until we add double-buffering, any unnecessary redrawing causes
annoying blinking. Eliminating redraws from unknown keypresses fixes
at least some, (but likely not that many).
---
 acre-x.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/acre-x.c b/acre-x.c
index f0fac37..194926a 100644
--- a/acre-x.c
+++ b/acre-x.c
@@ -126,6 +126,7 @@ handle_events(Display *dpy, Window window, Visual *visual,
 		XNextEvent (dpy, &xev);
                 switch (xev.type) {
                 case KeyPress:
+			need_redraw = true;
 			keycode = xev.xkey.keycode;
 			if (keycode == quit_code ||
 			    keycode == escape_code)
@@ -161,7 +162,10 @@ handle_events(Display *dpy, Window window, Visual *visual,
 			{
 				acre_get_x_axis_data_range (acre, &x_min, &x_max);
 			}
-			need_redraw = 1;
+			else
+			{
+				need_redraw = false;
+			}
 			break;
                 case ConfigureNotify:
                         width = xev.xconfigure.width;
-- 
2.43.0