From: Soeren Apel <redacted>
Date: Mon, 1 Oct 2018 07:21:59 +0000 (+0200)
Subject: View: Make TimeItem derivatives snap to edges when ruler-dragged
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=fc1df2df99c8ac41269ffba5966fcbb9a2e28479;p=pulseview.git

View: Make TimeItem derivatives snap to edges when ruler-dragged

Without this change, the snap-to-edge feature doesn't work
when TimeItem derivatives are dragged in the ruler.
---

diff --git a/pv/views/trace/view.cpp b/pv/views/trace/view.cpp
index 29c0675d..b8bbe357 100644
--- a/pv/views/trace/view.cpp
+++ b/pv/views/trace/view.cpp
@@ -1266,7 +1266,10 @@ bool View::eventFilter(QObject *object, QEvent *event)
 		if (object == viewport_)
 			hover_point_ = mouse_event->pos();
 		else if (object == ruler_)
-			hover_point_ = QPoint(mouse_event->x(), 0);
+			// Adjust the hover point's y coordinate so that it's relative to
+			// the top of the viewport. The result may be negative.
+			hover_point_ = QPoint(mouse_event->pos().x(),
+				mouse_event->pos().y() - ruler_->sizeHint().height());
 		else if (object == header_)
 			hover_point_ = QPoint(0, mouse_event->y());
 		else