Fix several timeline selection issues (ctrl+click making clip disappear)

src/definitions.h

@@ -56,6 +56,7 @@ const QString stopmotionMonitor("stopmotionMonitor");
 
 enum OperationType {
     None = 0,
+    WaitingForConfirm,
     MoveOperation,
     ResizeStart,
     ResizeEnd,

src/timeline/abstractclipitem.cpp

@@ -528,6 +528,27 @@ void AbstractClipItem::mousePressEvent(QGraphicsSceneMouseEvent * event)
     }
 }
 
+// virtual
+void AbstractClipItem::mouseReleaseEvent(QGraphicsSceneMouseEvent * event)
+{
+    if (event->modifiers() & Qt::ControlModifier) {
+        // User want to do a rectangle selection, so ignore the event to pass it to the view
+        event->ignore();
+    } else {
+        QGraphicsItem::mouseReleaseEvent(event);
+    }
+}
+
+void AbstractClipItem::mouseMoveEvent(QGraphicsSceneMouseEvent * event)
+{
+    if (event->buttons() !=  Qt::LeftButton || event->modifiers() & Qt::ControlModifier) {
+        // User want to do a rectangle selection, so ignore the event to pass it to the view
+        event->ignore();
+    } else {
+        QGraphicsItem::mouseMoveEvent(event);
+    }
+}
+
 int AbstractClipItem::itemHeight()
 {
     return 0;

src/timeline/abstractclipitem.h

@@ -131,6 +131,8 @@ protected:
     void drawKeyFrames(QPainter *painter, const QTransform &transformation);
     int mouseOverKeyFrames(QPointF pos, double maxOffset);
     void mousePressEvent(QGraphicsSceneMouseEvent * event);
+    void mouseReleaseEvent(QGraphicsSceneMouseEvent * event);
+    void mouseMoveEvent(QGraphicsSceneMouseEvent * event);
       int trackForPos(int position);
       int posForTrack(int track);
 };

src/timeline/abstractgroupitem.cpp

@@ -470,6 +470,27 @@ void AbstractGroupItem::mousePressEvent(QGraphicsSceneMouseEvent * event)
     }
 }
 
+// virtual
+void AbstractGroupItem::mouseReleaseEvent(QGraphicsSceneMouseEvent * event)
+{
+    if (event->modifiers() & Qt::ControlModifier) {
+        // User want to do a rectangle selection, so ignore the event to pass it to the view
+        event->ignore();
+    } else {
+        QGraphicsItem::mouseReleaseEvent(event);
+    }
+}
+
+void AbstractGroupItem::mouseMoveEvent(QGraphicsSceneMouseEvent * event)
+{
+    if (event->buttons() !=  Qt::LeftButton || event->modifiers() & Qt::ControlModifier) {
+        // User want to do a rectangle selection, so ignore the event to pass it to the view
+        event->ignore();
+    } else {
+        QGraphicsItem::mouseMoveEvent(event);
+    }
+}
+
 void AbstractGroupItem::resizeStart(int diff)
 {
     bool info = false;

src/timeline/abstractgroupitem.h

@@ -68,6 +68,8 @@ protected:
     virtual void dragLeaveEvent(QGraphicsSceneDragDropEvent *event);
     virtual void dropEvent(QGraphicsSceneDragDropEvent *event);
     virtual void mousePressEvent(QGraphicsSceneMouseEvent * event);
+    virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent * event);
+    virtual void mouseMoveEvent(QGraphicsSceneMouseEvent * event);
     int trackForPos(int position);
     int posForTrack(int track);
 

src/timeline/customtrackview.h

@@ -344,7 +344,9 @@ private:
     QGraphicsLineItem *m_cursorLine;
     ItemInfo m_dragItemInfo;
     ItemInfo m_selectionGroupInfo;
+    /** @brief Possible timeline action */
     OperationType m_operationMode;
+    /** @brief Currently running operation */
     OperationType m_moveOpMode;
     AbstractClipItem *m_dragItem;
     Guide *m_dragGuide;
@@ -505,6 +507,8 @@ private:
     void reloadTimeline();
     /** @brief Make sure our automatic composite transitions are correctly setup. */
     void checkCompositeTransitions(Mlt::Tractor *tractor);
+    /** @brief Timeline selection changed, update effect stack. */    
+    void updateTimelineSelection();
 
 private slots:
     void slotRefreshGuides();