Timeline ruler and scaling enhancements

- Make timeline scaling smoother and allow further scale values.
- Implement non linear scaling strategy which improve UX.
- Double clicking the scale head resets the scale to the default value
- Optimize drawing by only drawing the visible part of the ruler.
- Other assorted small tweaks

Change-Id: I5fbf729f3b5e098a60e26978af6bc82bb5f307ae
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

1 files changed, 2 insertions, 12 deletions

diff --git a/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/TimelineGraphicsScene.cpp b/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/TimelineGraphicsScene.cpp
index 026a7a68..6aff79cb 100644
--- a/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/TimelineGraphicsScene.cpp
+++ b/src/Authoring/Qt3DStudio/Palettes/TimelineGraphicsView/TimelineGraphicsScene.cpp
@@ -285,7 +285,7 @@ TimelineGraphicsScene::TimelineGraphicsScene(TimelineWidget *timelineWidget)
     });
 
     QTimer::singleShot(0, this, [this]() {
-        m_playHead->setPosition(0);
+        m_playHead->setTime(0);
         m_widgetTimeline->viewTreeContent()->horizontalScrollBar()->setValue(0);
     });
 
@@ -370,22 +370,12 @@ void TimelineGraphicsScene::setControllerText(const QString &controller)
 void TimelineGraphicsScene::updateTimelineLayoutWidth()
 {
     double timelineWidth = TimelineConstants::RULER_EDGE_OFFSET * 2
-                           + m_ruler->maxDuration() * TimelineConstants::RULER_MILLI_W
-                             * m_ruler->timelineScale();
+                           + m_ruler->timeToDistance(m_ruler->maxDuration());
 
     m_layoutTimeline->setMinimumWidth(timelineWidth);
     m_layoutTimeline->setMaximumWidth(timelineWidth);
 }
 
-void TimelineGraphicsScene::updateControllerLayoutWidth()
-{
-    if (m_layoutTimeline->count() < 2)
-        return;
-    auto root = m_layoutTimeline->itemAt(1);
-
-    static_cast<RowTimeline *>(root->graphicsItem())->setEndTime(ruler()->duration());
-}
-
 void TimelineGraphicsScene::updateController()
 {
     setControllerText(m_widgetTimeline->toolbar()->getCurrentController());