From bacc5e501df0d3615dbe0aa8ef54b91ee3377b6e Mon Sep 17 00:00:00 2001
From: Carl Worth <cworth@cworth.org>
Date: Thu, 7 Nov 2013 13:14:56 -0800
Subject: [PATCH] acre-x: Fix zooming so that zoom-in and zoom-out use the same
amounts
The intent was always that one zoom-in followed by one zoom-out, (or
vice versa) would lead to the original zoom level. But the zoom-out
code had some incorrect arithmetic in it such that zooming out was
much faster than zooming in.
---
acre-x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/acre-x.c b/acre-x.c
index 194926a..c375c36 100644
--- a/acre-x.c
+++ b/acre-x.c
@@ -154,7 +154,7 @@ handle_events(Display *dpy, Window window, Visual *visual,
}
else if (keycode == minus_code)
{
- shift = (1- 2*ZOOM) * (x_max - x_min);
+ shift = (ZOOM/(1 - 2 * ZOOM)) * (x_max - x_min);
x_min -= shift;
x_max += shift;
}
--
2.45.2