From: Scott Shawcroft <redacted>
Date: Sun, 12 Jan 2020 20:10:39 +0000 (-0800)
Subject: Ignore touch events generated by a TrackPad.
X-Git-Url: http://sigrok.org/gitweb/?p=pulseview.git;a=commitdiff_plain;h=1f5d683e6bbab6d5694bd28524b24022fef70195

Ignore touch events generated by a TrackPad.

This improves two finger drag trackpad zooming and panning on a
Macbook Pro immensely because it used to redraw every touch event.
This change makes it rely on the mouse wheel events instead.

Pinch-to-zoom no longer works. Two finger drag up and down is an
alternative.

This fixes bug #1056.
---

diff --git a/pv/views/trace/viewport.cpp b/pv/views/trace/viewport.cpp
index 85db5250..0c73ec49 100644
--- a/pv/views/trace/viewport.cpp
+++ b/pv/views/trace/viewport.cpp
@@ -116,6 +116,9 @@ bool Viewport::touch_event(QTouchEvent *event)
 		pinch_zoom_active_ = false;
 		return false;
 	}
+	if (event->device()->type() == QTouchDevice::TouchPad) {
+		return false;
+	}
 
 	const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first();
 	const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last();