From e9d1e1af56ca8ba9d8139020fd38f5dfdf2e1d4e Mon Sep 17 00:00:00 2001
From: ritsuka <damiog@gmail.com>
Date: Sun, 4 Aug 2013 09:12:33 +0000
Subject: MacGui: Read events from the mouse scroll wheel in
 HBPreviewController.m to change the preview image.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5690 b64f7644-9d1e-0410-96f1-a4d463321fa5
---
 macosx/HBPreviewController.m | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/macosx/HBPreviewController.m b/macosx/HBPreviewController.m
index 5d132a12e..8ea8c9bb3 100644
--- a/macosx/HBPreviewController.m
+++ b/macosx/HBPreviewController.m
@@ -1278,6 +1278,23 @@
         [super keyDown:event];
 }
 
+- (void)scrollWheel:(NSEvent *)theEvent
+{
+    if (!fEncodeState)
+    {
+        if ([theEvent deltaY] < 0)
+        {
+            [fPictureSlider setIntegerValue:fPicture < [fPictureSlider maxValue] ? fPicture + 1 : fPicture];
+            [self pictureSliderChanged:self];
+        }
+        else if ([theEvent deltaY] > 0)
+        {
+            [fPictureSlider setIntegerValue:fPicture > [fPictureSlider minValue] ? fPicture - 1 : fPicture];
+            [self pictureSliderChanged:self];
+        }
+    }
+}
+
 #pragma mark *** QTTime Utilities ***
 
 	// convert a time value (long) to a QTTime structure
-- 
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