From: Alexandru Gagniuc <redacted>
Date: Sun, 16 Dec 2012 06:01:47 +0000 (-0600)
Subject: Viewport: Allow horizontal scrolling via mouse wheel tilting
X-Git-Tag: pulseview-0.1.0~189
X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=commitdiff_plain;h=238404062db14998f3b0ca93ae03a47543d219b8

Viewport: Allow horizontal scrolling via mouse wheel tilting

On mice with a horizontal scroll wheel, or tilting wheel, enable the user to
scroll horizontally.

Signed-off-by: Alexandru Gagniuc <redacted>
---

diff --git a/pv/view/viewport.cpp b/pv/view/viewport.cpp
index 2b03b767..90f2b4b2 100644
--- a/pv/view/viewport.cpp
+++ b/pv/view/viewport.cpp
@@ -119,6 +119,11 @@ void Viewport::wheelEvent(QWheelEvent *event)
 	if (event->orientation() == Qt::Vertical) {
 		// Vertical scrolling is interpreted as zooming in/out
 		_view.zoom(event->delta() / 120, event->x());
+	} else if (event->orientation() == Qt::Horizontal) {
+		// Horizontal scrolling is interpreted as moving left/right
+		_view.set_scale_offset(_view.scale(),
+				       event->delta() * _view.scale()
+				       + _view.offset());
 	}
 }