X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fviews%2Ftrace%2Fviewport.cpp;h=7ab24eadd3ffd9bd4f8edd30679d8cde0de74f08;hp=bab4f95368aa55569ef95bffb2c91a712b72d3e5;hb=f375439ffd21c497f7170dc4d5eca94e816116ce;hpb=16d72fc1acd452182d0f9ed281282c4f9d426641

diff --git a/pv/views/trace/viewport.cpp b/pv/views/trace/viewport.cpp
index bab4f953..7ab24ead 100644
--- a/pv/views/trace/viewport.cpp
+++ b/pv/views/trace/viewport.cpp
@@ -241,6 +241,12 @@ void Viewport::wheelEvent(QWheelEvent *event)
 			// is intrepretted as vertical scrolling
 			view_.set_v_offset(-view_.owner_visual_v_offset() -
 				(delta * height()) / (8 * 120));
+		} else if (event->modifiers() & Qt::ShiftModifier) {
+			// Vertical scrolling with the shift key pressed
+			// acts as horizontal scrolling like in Gimp
+			// and Inkscape.
+			view_.set_scale_offset(view_.scale(),
+				- delta * view_.scale() + view_.offset());
 		} else {
 			// Vertical scrolling is interpreted as zooming in/out
 #if QT_VERSION >= QT_VERSION_CHECK(5, 12, 0)