Introduce video thumbnail for each frame when zooming at max level (causes slowdown...

[kdenlive] / src / customtrackview.cpp

diff --git a/src/customtrackview.cpp b/src/customtrackview.cpp
index 597e770c982afaa876c5342d9366845a81345824..30a681c6202bfcc6bb7d1d64b9de44ab8db3270f 100644 (file)
--- a/src/customtrackview.cpp
+++ b/src/customtrackview.cpp
@@ -130,7 +130,9 @@ CustomTrackView::CustomTrackView(KdenliveDoc *doc, CustomTrackScene* projectscen
     setLineWidth(0);
     //setCacheMode(QGraphicsView::CacheBackground);
     //setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
+    setViewportUpdateMode(QGraphicsView::SmartViewportUpdate);
 
+    pixmapCache = new KPixmapCache("kdenlive-thumbs");
     KdenliveSettings::setTrackheight(m_tracksHeight);
     m_animationTimer = new QTimeLine(800);
     m_animationTimer->setFrameRange(0, 5);
@@ -2179,6 +2181,7 @@ void CustomTrackView::updateTransition(int track, GenTime pos, QDomElement oldTr
         if (transitionClip && transitionClip->baseClip()) {
             QString size = transitionClip->baseClip()->getProperty("frame_size");
             double factor = transitionClip->baseClip()->getProperty("aspect_ratio").toDouble();
+            if (factor == 0) factor = 1.0;
             p.setX((int)(size.section('x', 0, 0).toInt() * factor + 0.5));
             p.setY(size.section('x', 1, 1).toInt());
         }
@@ -3569,6 +3572,7 @@ void CustomTrackView::mouseReleaseEvent(QMouseEvent * event)
         if (transitionClip && transitionClip->baseClip()) {
             QString size = transitionClip->baseClip()->getProperty("frame_size");
             double factor = transitionClip->baseClip()->getProperty("aspect_ratio").toDouble();
+            if (factor == 0) factor = 1.0;
             p.setX((int)(size.section('x', 0, 0).toInt() * factor + 0.5));
             p.setY(size.section('x', 1, 1).toInt());
         }
@@ -4187,6 +4191,7 @@ void CustomTrackView::moveTransition(const ItemInfo start, const ItemInfo end, b
         if (transitionClip && transitionClip->baseClip()) {
             QString size = transitionClip->baseClip()->getProperty("frame_size");
             double factor = transitionClip->baseClip()->getProperty("aspect_ratio").toDouble();
+            if (factor == 0) factor = 1.0;
             p.setX((int)(size.section('x', 0, 0).toInt() * factor + 0.5));
             p.setY(size.section('x', 1, 1).toInt());
         }