From 4c71fcc51bf25e450b245929e968ff63692ef181 Mon Sep 17 00:00:00 2001
From: Thomas Goyne <plorkyeran@aegisub.org>
Date: Sat, 25 May 2013 07:04:59 -0700
Subject: [PATCH] Don't invert horizontal scroll on the audio display on OS X

For some reason horizontal scroll comes pre-flipped.

Closes #1612.
---
 aegisub/src/audio_box.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/aegisub/src/audio_box.cpp b/aegisub/src/audio_box.cpp
index 9015da521..79066dd8b 100644
--- a/aegisub/src/audio_box.cpp
+++ b/aegisub/src/audio_box.cpp
@@ -152,9 +152,13 @@ void AudioBox::OnMouseWheel(wxMouseEvent &evt) {
 	if (!zoom)
 	{
 		int amount = -evt.GetWheelRotation() * GetClientSize().GetWidth() / (evt.GetWheelDelta() * 3);
+
 		// If the user did a horizontal scroll the amount should be inverted
 		// for it to be natural.
+		// On OS X it's pre-flipped for some reason.
+#ifndef __APPLE__
 		if (evt.GetWheelAxis() == 1) amount = -amount;
+#endif
 
 		// Reset any accumulated zoom
 		mouse_zoom_accum = 0;