Fix incorrect duration jump glitch

While dragging a row duration, at the point when the horizontal
scrollbar appears, the duration bar jumps far away for 1 frame.

Task-number: QT3DS-1806
Change-Id: Ia6486c87fed891c2bf555ffd18d8bcc3f2566ec9
Reviewed-by: Tomi Korpipää <tomi.korpipaa@qt.io>
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

1 files changed, 4 insertions, 2 deletions

diff --git a/src/Authoring/Studio/Palettes/TimelineGraphicsView/TimelineGraphicsScene.cpp b/src/Authoring/Studio/Palettes/TimelineGraphicsView/TimelineGraphicsScene.cpp
index dc200366..14b6dfa0 100644
--- a/src/Authoring/Studio/Palettes/TimelineGraphicsView/TimelineGraphicsScene.cpp
+++ b/src/Authoring/Studio/Palettes/TimelineGraphicsView/TimelineGraphicsScene.cpp
@@ -424,14 +424,16 @@ void TimelineGraphicsScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
             if (shift)
                 snap(distance);
             m_editedTimelineRow->setStartX(distance);
-        } else if (m_clickedTimelineControlType == TimelineControlType::EndHandle) {
+        } else if (m_clickedTimelineControlType == TimelineControlType::EndHandle
+                   && qAbs(event->scenePos().x() - event->lastScenePos().x()) < 50) {
             // resizing layer timline duration from right
             double distance = event->scenePos().x() - m_ruler->pos().x();
             if (shift)
                 snap(distance);
             m_editedTimelineRow->setEndX(distance);
             rowManager()->updateRulerDuration();
-        } else if (m_clickedTimelineControlType == TimelineControlType::Duration) {
+        } else if (m_clickedTimelineControlType == TimelineControlType::Duration
+                   && qAbs(event->scenePos().x() - event->lastScenePos().x()) < 50) {
             // moving layer timeline duration
             double newX = event->scenePos().x() - m_editedTimelineRow->getDurationMoveOffsetX()
                     - m_ruler->x();