X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fabstractgroupitem.cpp;h=2b74e01e108e7459cfe7c80d1ea605b060b818de;hb=56aee6aedeeed3efd10ada8fe3c229eddc01ef05;hp=268bb930654776b8ab3abd17f03b507e4d1eac99;hpb=43c74f884965987e0906d94a43d95d426d392fc5;p=kdenlive

diff --git a/src/abstractgroupitem.cpp b/src/abstractgroupitem.cpp
index 268bb930..2b74e01e 100644
--- a/src/abstractgroupitem.cpp
+++ b/src/abstractgroupitem.cpp
@@ -18,52 +18,156 @@
  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  ***************************************************************************/
 
-#include <QGraphicsScene>
-#include <QGraphicsView>
-#include <QScrollBar>
-#include <QToolTip>
-
-#include <KDebug>
-#include <KLocale>
-
 #include "abstractgroupitem.h"
 #include "abstractclipitem.h"
 #include "kdenlivesettings.h"
 #include "customtrackscene.h"
+#include "customtrackview.h"
+
+#include <KDebug>
+
+#include <QPainter>
+#include <QStyleOptionGraphicsItem>
+#include <QDomDocument>
+#include <QMimeData>
+#include <QGraphicsSceneMouseEvent>
 
-AbstractGroupItem::AbstractGroupItem(double fps): QGraphicsItemGroup(), m_fps(fps) {
-    setFlags(QGraphicsItem::ItemClipsToShape | QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
+
+AbstractGroupItem::AbstractGroupItem(double /* fps */) :
+    QObject(),
+    QGraphicsItemGroup()
+{
+    setZValue(1);
+    setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
+#if QT_VERSION >= 0x040600
+    setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
+#endif
+    setAcceptDrops(true);
+    m_resizeInfos = QList <ItemInfo>();
 }
 
-int AbstractGroupItem::type() const {
-    return GROUPWIDGET;
+int AbstractGroupItem::type() const
+{
+    return GroupWidget;
 }
 
-CustomTrackScene* AbstractGroupItem::projectScene() {
+int AbstractGroupItem::track() const
+{
+    //return (int)(scenePos().y() / KdenliveSettings::trackheight());
+    int topTrack = -1;
+    QList<QGraphicsItem *> children = childItems();
+    for (int i = 0; i < children.count(); ++i) {
+        if (children.at(i)->type() == GroupWidget) {
+            children.append(children.at(i)->childItems());
+            continue;
+        }
+        AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
+        if (item && (topTrack == -1 || topTrack > item->track())) {
+            topTrack = item->track();
+        }
+    }
+    return topTrack;
+}
+
+void AbstractGroupItem::setItemLocked(bool locked)
+{
+    if (locked)
+        setSelected(false);
+
+    setFlag(QGraphicsItem::ItemIsMovable, !locked);
+    setFlag(QGraphicsItem::ItemIsSelectable, !locked);
+
+    foreach (QGraphicsItem *child, childItems())
+        ((AbstractClipItem *)child)->setItemLocked(locked);
+}
+
+bool AbstractGroupItem::isItemLocked() const
+{
+    return !(flags() & (QGraphicsItem::ItemIsSelectable));
+}
+
+CustomTrackScene* AbstractGroupItem::projectScene()
+{
     if (scene()) return static_cast <CustomTrackScene*>(scene());
     return NULL;
 }
 
+QPainterPath AbstractGroupItem::clipGroupSpacerShape(const QPointF &offset) const
+{
+    return spacerGroupShape(AVWidget, offset);
+}
+
+QPainterPath AbstractGroupItem::clipGroupShape(const QPointF &offset) const
+{
+    return groupShape(AVWidget, offset);
+}
+
+QPainterPath AbstractGroupItem::transitionGroupShape(const QPointF &offset) const
+{
+    return groupShape(TransitionWidget, offset);
+}
+
+QPainterPath AbstractGroupItem::groupShape(GraphicsRectItem type, const QPointF &offset) const
+{
+    QPainterPath path;
+    QList<QGraphicsItem *> children = childItems();
+    for (int i = 0; i < children.count(); ++i) {
+        if (children.at(i)->type() == (int)type) {
+            QRectF r(children.at(i)->sceneBoundingRect());
+            r.translate(offset);
+            path.addRect(r);
+        } else if (children.at(i)->type() == GroupWidget) {
+            QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
+            for (int j = 0; j < subchildren.count(); j++) {
+                if (subchildren.at(j)->type() == (int)type) {
+                    QRectF r(subchildren.at(j)->sceneBoundingRect());
+                    r.translate(offset);
+                    path.addRect(r);
+                }
+            }
+        }
+    }
+    return path;
+}
 
-QPolygonF AbstractGroupItem::groupShape(QPointF offset) {
+QPainterPath AbstractGroupItem::spacerGroupShape(GraphicsRectItem type, const QPointF &offset) const
+{
+    QPainterPath path;
     QList<QGraphicsItem *> children = childItems();
-    QPolygonF path;
-    for (int i = 0; i < children.count(); i++) {
-        if (children.at(i)->type() == AVWIDGET) {
-            QPolygonF r = QPolygonF(children.at(i)->sceneBoundingRect());
-            path = path.united(r);
+    for (int i = 0; i < children.count(); ++i) {
+        if (children.at(i)->type() == (int)type) {
+            QRectF r(children.at(i)->sceneBoundingRect());
+            r.translate(offset);
+            r.setRight(scene()->width());
+            path.addRect(r);
+        } else if (children.at(i)->type() == GroupWidget) {
+            QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
+            for (int j = 0; j < subchildren.count(); j++) {
+                if (subchildren.at(j)->type() == (int)type) {
+                    QRectF r(subchildren.at(j)->sceneBoundingRect());
+                    r.translate(offset);
+                    r.setRight(scene()->width());
+                    path.addRect(r);
+                }
+            }
         }
     }
-    path.translate(offset);
     return path;
 }
 
-void AbstractGroupItem::addItem(QGraphicsItem * item) {
+void AbstractGroupItem::addItem(QGraphicsItem * item)
+{
     addToGroup(item);
-    //fixItemRect();
+    item->setFlag(QGraphicsItem::ItemIsMovable, false);
+}
+
+void AbstractGroupItem::removeItem(QGraphicsItem * item)
+{
+    removeFromGroup(item);
 }
 
-void AbstractGroupItem::fixItemRect() {
+void AbstractGroupItem::fixItemRect()
+{
     QPointF start = boundingRect().topLeft();
     if (start != QPointF(0, 0)) {
         translate(0 - start.x(), 0 - start.y());
@@ -71,97 +175,384 @@ void AbstractGroupItem::fixItemRect() {
     }
 }
 
+/*ItemInfo AbstractGroupItem::info() const {
+    ItemInfo itemInfo;
+    itemInfo.startPos = m_startPos;
+    itemInfo.track = m_track;
+    return itemInfo;
+}*/
+
 // virtual
-void AbstractGroupItem::paint(QPainter *p, const QStyleOptionGraphicsItem *, QWidget *) {
-    p->fillRect(boundingRect(), QColor(200, 100, 100, 100));
+void AbstractGroupItem::paint(QPainter *p, const QStyleOptionGraphicsItem *option, QWidget *)
+{
+    QColor bgcolor(100, 100, 200, 100);
+    QRectF bound = option->exposedRect.adjusted(0, 0, 1, 1);
+    p->setClipRect(bound);
+    p->setBrush(bgcolor);
+    QPen pen = p->pen();
+    pen.setColor(QColor(200, 90, 90));
+    pen.setStyle(Qt::DashLine);
+    pen.setWidthF(0.0);
+    p->setPen(pen);
+    p->drawRoundedRect(boundingRect().adjusted(0, 0, -1, 0), 3, 3);
 }
 
 //virtual
-QVariant AbstractGroupItem::itemChange(GraphicsItemChange change, const QVariant &value) {
-    if (change == ItemPositionChange && scene()) {
+QVariant AbstractGroupItem::itemChange(GraphicsItemChange change, const QVariant &value)
+{
+    if (change == QGraphicsItem::ItemSelectedChange) {
+        if (value.toBool()) setZValue(10);
+        else setZValue(1);
+    }
+    if (change == ItemPositionChange && scene() && parentItem() == 0) {
         // calculate new position.
-        QPointF newPos = value.toPointF();
+        const int trackHeight = KdenliveSettings::trackheight();
         QPointF start = sceneBoundingRect().topLeft();
-        int posx = start.x() + newPos.x(); //projectScene()->getSnapPointForPos(start.x() + sc.x(), KdenliveSettings::snaptopoints());
-
-        int startTrack = (start.y()) / KdenliveSettings::trackheight();
-        int newTrack = (start.y() + newPos.y()) / KdenliveSettings::trackheight();
-        //kDebug()<<"// GROUP NEW TRACK: "<<newTrack<<", START TRACK: "<<startTrack;
-        newTrack = qMin(newTrack, projectScene()->tracksCount() - 1);
-        newTrack = qMax(newTrack, 0);
-        newPos.setY((int)((newTrack - startTrack) * KdenliveSettings::trackheight()));
+        QPointF newPos = value.toPointF();
+        int xpos = projectScene()->getSnapPointForPos((int)(start.x() + newPos.x() - pos().x()), KdenliveSettings::snaptopoints());
 
-        //kDebug() << "------------------------------------GRUOP MOVE";
+        xpos = qMax(xpos, 0);
+        //kDebug()<<"GRP XPOS:"<<xpos<<", START:"<<start.x()<<",NEW:"<<newPos.x()<<"; SCENE:"<<scenePos().x()<<",POS:"<<pos().x();
+        newPos.setX((int)(pos().x() + xpos - (int) start.x()));
+        QStringList lockedTracks = property("locked_tracks").toStringList();
+        int proposedTrack = (property("y_absolute").toInt() + newPos.y()) / trackHeight;
+        // Check if top item is a clip or a transition
+        int offset = 0;
+        int topTrack = -1;
+        QList<int> groupTracks;
+        QList<QGraphicsItem *> children = childItems();
+        for (int i = 0; i < children.count(); ++i) {
+            int currentTrack = 0;
+            if (children.at(i)->type() == AVWidget || children.at(i)->type() == TransitionWidget) {
+                currentTrack = static_cast <AbstractClipItem*> (children.at(i))->track();
+                if (!groupTracks.contains(currentTrack)) groupTracks.append(currentTrack);
+            }
+            else if (children.at(i)->type() == GroupWidget) {
+                currentTrack = static_cast <AbstractGroupItem*> (children.at(i))->track();
+            }
+            else continue;
+            if (children.at(i)->type() == AVWidget) {
+                if (topTrack == -1 || currentTrack <= topTrack) {
+                    offset = 0;
+                    topTrack = currentTrack;
+                }
+            } else if (children.at(i)->type() == TransitionWidget) {
+                if (topTrack == -1 || currentTrack < topTrack) {
+                    offset = (int)(trackHeight / 3 * 2 - 1);
+                    topTrack = currentTrack;
+                }
+            } else if (children.at(i)->type() == GroupWidget) {
+                QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
+                bool clipGroup = false;
+                for (int j = 0; j < subchildren.count(); j++) {
+                    if (subchildren.at(j)->type() == AVWidget || subchildren.at(j)->type() == TransitionWidget) {
+                        int subTrack = static_cast <AbstractClipItem*> (subchildren.at(j))->track();
+                        if (!groupTracks.contains(subTrack)) groupTracks.append(subTrack);
+                        clipGroup = true;
+                    }
+                }
+                if (clipGroup) {
+                    if (topTrack == -1 || currentTrack <= topTrack) {
+                        offset = 0;
+                        topTrack = currentTrack;
+                    }
+                } else {
+                    if (topTrack == -1 || currentTrack < topTrack) {
+                        offset = (int)(trackHeight / 3 * 2 - 1);
+                        topTrack = currentTrack;
+                    }
+                }
+            }
+        }
+        // Check no clip in the group goes outside of existing tracks
+        int maximumTrack = projectScene()->tracksCount() - 1;
+        int groupHeight = 0;
+        for (int i = 0; i < groupTracks.count(); ++i) {
+            int offset = groupTracks.at(i) - topTrack;
+            if (offset > groupHeight) groupHeight = offset;
+        }
+        maximumTrack -= groupHeight;
+        proposedTrack = qMin(proposedTrack, maximumTrack);
+        proposedTrack = qMax(proposedTrack, 0);
+        int groupOffset = proposedTrack - topTrack;
+        if (!lockedTracks.isEmpty()) {
+            for (int i = 0; i < groupTracks.count(); ++i) {
+                if (lockedTracks.contains(QString::number(groupTracks.at(i) + groupOffset))) {
+                    return pos();
+                }
+            }
+        }
+        newPos.setY((int)((proposedTrack) * trackHeight) + offset);
+        //if (newPos == start) return start;
 
-        if (start.x() + newPos.x() - pos().x() < 0) {
+        /*if (newPos.x() < 0) {
             // If group goes below 0, adjust position to 0
             return QPointF(pos().x() - start.x(), pos().y());
+        }*/
+
+        QList<QGraphicsItem*> collidingItems;
+        QPainterPath shape;
+        if (projectScene()->editMode() == NormalEdit) {
+            shape = clipGroupShape(newPos - pos());
+            collidingItems = scene()->items(shape, Qt::IntersectsItemShape);
+            collidingItems.removeAll(this);
+            for (int i = 0; i < children.count(); ++i) {
+                if (children.at(i)->type() == GroupWidget) {
+                    QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
+                    for (int j = 0; j < subchildren.count(); j++) {
+                        collidingItems.removeAll(subchildren.at(j));
+                    }
+                }
+                collidingItems.removeAll(children.at(i));
+            }
+        }
+        if (!collidingItems.isEmpty()) {
+            bool forwardMove = xpos > start.x();
+            int offset = 0;
+            for (int i = 0; i < collidingItems.count(); ++i) {
+                QGraphicsItem *collision = collidingItems.at(i);
+                if (collision->type() == AVWidget) {
+                    // Collision
+                    if (newPos.y() != pos().y()) {
+                        // Track change results in collision, restore original position
+                        return pos();
+                    }
+                    AbstractClipItem *item = static_cast <AbstractClipItem *>(collision);
+                    if (forwardMove) {
+                        // Moving forward, determine best pos
+                        QPainterPath clipPath;
+                        clipPath.addRect(item->sceneBoundingRect());
+                        QPainterPath res = shape.intersected(clipPath);
+                        offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
+                    } else {
+                        // Moving backward, determine best pos
+                        QPainterPath clipPath;
+                        clipPath.addRect(item->sceneBoundingRect());
+                        QPainterPath res = shape.intersected(clipPath);
+                        offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
+                    }
+                }
+            }
+            if (offset > 0) {
+                if (forwardMove) {
+                    newPos.setX(newPos.x() - offset);
+                } else {
+                    newPos.setX(newPos.x() + offset);
+                }
+                // If there is still a collision after our position adjust, restore original pos
+                collidingItems = scene()->items(clipGroupShape(newPos - pos()), Qt::IntersectsItemShape);
+                collidingItems.removeAll(this);
+                for (int i = 0; i < children.count(); ++i) {
+                    if (children.at(i)->type() == GroupWidget) {
+                        QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
+                        for (int j = 0; j < subchildren.count(); j++) {
+                            collidingItems.removeAll(subchildren.at(j));
+                        }
+                    }
+                    collidingItems.removeAll(children.at(i));
+                }
+                for (int i = 0; i < collidingItems.count(); ++i)
+                    if (collidingItems.at(i)->type() == AVWidget) return pos();
+            }
         }
 
-        QPolygonF sceneShape = groupShape(newPos - pos());
-        QList<QGraphicsItem*> collindingItems = scene()->items(sceneShape, Qt::IntersectsItemShape);
-        QList<QGraphicsItem *> children = childItems();
-        for (int i = 0; i < children.count(); i++) {
-            collindingItems.removeAll(children.at(i));
+        if (projectScene()->editMode() == NormalEdit) {
+            shape = transitionGroupShape(newPos - pos());
+            collidingItems = scene()->items(shape, Qt::IntersectsItemShape);
+            collidingItems.removeAll(this);
+            for (int i = 0; i < children.count(); ++i) {
+                if (children.at(i)->type() == GroupWidget) {
+                    QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
+                    for (int j = 0; j < subchildren.count(); j++) {
+                        collidingItems.removeAll(subchildren.at(j));
+                    }
+                }
+                collidingItems.removeAll(children.at(i));
+            }
         }
-        if (collindingItems.isEmpty()) return newPos;
+        if (collidingItems.isEmpty()) return newPos;
         else {
-            for (int i = 0; i < collindingItems.count(); i++) {
-                QGraphicsItem *collision = collindingItems.at(i);
-                if (collision->type() == AVWIDGET) {
+            bool forwardMove = xpos > start.x();
+            int offset = 0;
+            for (int i = 0; i < collidingItems.count(); ++i) {
+                QGraphicsItem *collision = collidingItems.at(i);
+                if (collision->type() == TransitionWidget) {
                     // Collision
-                    return pos();
-                    //TODO: improve movement when collision happens
-                    /*if (startTrack != newTrack) return pos();
-                    if (collision->pos().x() > pos().x()) {
-                    return QPointF(collision->sceneBoundingRect().x() - sceneBoundingRect().width() + pos().x() - start.x() - 1, newPos.y());
-                    }*/
+                    if (newPos.y() != pos().y()) {
+                        // Track change results in collision, restore original position
+                        return pos();
+                    }
+                    AbstractClipItem *item = static_cast <AbstractClipItem *>(collision);
+                    if (forwardMove) {
+                        // Moving forward, determine best pos
+                        QPainterPath clipPath;
+                        clipPath.addRect(item->sceneBoundingRect());
+                        QPainterPath res = shape.intersected(clipPath);
+                        offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
+                    } else {
+                        // Moving backward, determine best pos
+                        QPainterPath clipPath;
+                        clipPath.addRect(item->sceneBoundingRect());
+                        QPainterPath res = shape.intersected(clipPath);
+                        offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
+                    }
+                }
+            }
+            if (offset > 0) {
+                if (forwardMove) {
+                    newPos.setX(newPos.x() - offset);
+                } else {
+                    newPos.setX(newPos.x() + offset);
+                }
+                // If there is still a collision after our position adjust, restore original pos
+                collidingItems = scene()->items(transitionGroupShape(newPos - pos()), Qt::IntersectsItemShape);
+                for (int i = 0; i < children.count(); ++i) {
+                    collidingItems.removeAll(children.at(i));
                 }
+                for (int i = 0; i < collidingItems.count(); ++i)
+                    if (collidingItems.at(i)->type() == TransitionWidget) return pos();
             }
-            return newPos;
         }
+        return newPos;
+    }
+    return QGraphicsItemGroup::itemChange(change, value);
+}
 
-        //else posx -= startx;
-        //posx = qMax(posx, 0);
-        //newPos.setX(posx);
-        //kDebug()<<"Y POS: "<<start.y() + newPos.y()<<"SCN MP: "<<sc;
-        /*int newTrack = (start.y() + newPos.y()) / KdenliveSettings::trackheight();
-        int oldTrack = (start.y() + pos().y()) / KdenliveSettings::trackheight();
-        newPos.setY((newTrack) * KdenliveSettings::trackheight() - start.y() + 1);*/
+//virtual
+void AbstractGroupItem::dropEvent(QGraphicsSceneDragDropEvent * event)
+{
+    QString effects = QString::fromUtf8(event->mimeData()->data("kdenlive/effectslist"));
+    QDomDocument doc;
+    doc.setContent(effects, true);
+    QDomElement e = doc.documentElement();
+    e.setAttribute("kdenlive_ix", 0);
+    CustomTrackView *view = (CustomTrackView *) scene()->views()[0];
+    QPointF dropPos = event->scenePos();
+    QList<QGraphicsItem *> selection = scene()->items(dropPos);
+    AbstractClipItem *dropChild = NULL;
+    for (int i = 0; i < selection.count(); ++i) {
+        if (selection.at(i)->type() == AVWidget) {
+            dropChild = (AbstractClipItem *) selection.at(i);
+            break;
+        }
+    }
+    if (view) view->slotAddGroupEffect(e, this, dropChild);
+}
+
+//virtual
+void AbstractGroupItem::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
+{
+    event->setAccepted(event->mimeData()->hasFormat("kdenlive/effectslist"));
+}
 
+void AbstractGroupItem::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
+{
+    Q_UNUSED(event)
+}
 
-        //if (start.y() + newPos.y() < 1)  newTrack = oldTrack;
+// virtual
+void AbstractGroupItem::mousePressEvent(QGraphicsSceneMouseEvent * event)
+{
+    if (event->modifiers() & Qt::ShiftModifier) {
+        // User want to do a rectangle selection, so ignore the event to pass it to the view
+        event->ignore();
+    } else {
+        QList <QGraphicsItem *>list = scene()->items(event->scenePos());
+        // only allow group move if we click over an item in the group
+        foreach(const QGraphicsItem *item, list) {
+            if (item->type() == TransitionWidget || item->type() == AVWidget) {
+                QGraphicsItem::mousePressEvent(event);
+                return;
+            }
+        }
+        event->ignore();
+    }
+}
 
-        return newPos;
+void AbstractGroupItem::resizeStart(int diff)
+{
+    bool info = false;
+    if (m_resizeInfos.isEmpty())
+        info = true;
+    int maximum = diff;
+    QList <QGraphicsItem *> children = childItems();
+    QList <AbstractClipItem *> items;
+    int itemcount = 0;
+    for (int i = 0; i < children.count(); ++i) {
+        AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
+        if (item && item->type() == AVWidget) {
+            items << item;
+            if (info)
+                m_resizeInfos << item->info();
+            item->resizeStart((int)(m_resizeInfos.at(itemcount).startPos.frames(item->fps())) + diff);
+            int itemdiff = (int)(item->startPos() - m_resizeInfos.at(itemcount).startPos).frames(item->fps());
+            if (qAbs(itemdiff) < qAbs(maximum))
+                maximum = itemdiff;
+            ++itemcount;
+        }
+    }
+    
+    for (int i = 0; i < items.count(); ++i)
+        items.at(i)->resizeStart((int)(m_resizeInfos.at(i).startPos.frames(items.at(i)->fps())) + maximum);
+}
 
-        // Only one clip is moving
+void AbstractGroupItem::resizeEnd(int diff)
+{
+    bool info = false;
+    if (m_resizeInfos.isEmpty())
+        info = true;
+    int maximum = diff;
+    QList <QGraphicsItem *> children = childItems();
+    QList <AbstractClipItem *> items;
+    int itemcount = 0;
+    for (int i = 0; i < children.count(); ++i) {
+        AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
+        if (item && item->type() == AVWidget) {
+            items << item;
+            if (info)
+                m_resizeInfos << item->info();
+            item->resizeEnd((int)(m_resizeInfos.at(itemcount).endPos.frames(item->fps())) + diff);
+            int itemdiff = (int)(item->endPos() - m_resizeInfos.at(itemcount).endPos).frames(item->fps());
+            if (qAbs(itemdiff) < qAbs(maximum))
+                maximum = itemdiff;
+            ++itemcount;
+        }
+    }
+
+    for (int i = 0; i < items.count(); ++i)
+        items.at(i)->resizeEnd((int)(m_resizeInfos.at(i).endPos.frames(items.at(i)->fps())) + maximum);
+}
 
-        QList<QGraphicsItem*> items = scene()->items(sceneShape, Qt::IntersectsItemShape);
+QList< ItemInfo > AbstractGroupItem::resizeInfos()
+{
+    return m_resizeInfos;
+}
 
+void AbstractGroupItem::clearResizeInfos()
+{
+    // m_resizeInfos.clear() will crash in some cases for unknown reasons - ttill
+    m_resizeInfos = QList <ItemInfo>();
+}
 
-        if (!items.isEmpty()) {
-            for (int i = 0; i < items.count(); i++) {
-                if (items.at(i)->type() == AVWIDGET) {
-                    // Collision!
-                    //kDebug()<<"/// COLLISION WITH ITEM: "<<items.at(i)->sceneBoundingRect();
-                    return pos();
-                    QPointF otherPos = items.at(i)->pos();
-                    if ((int) otherPos.y() != (int) pos().y()) return pos();
-                    if (pos().x() < otherPos.x()) {
-                        // move clip just before colliding clip
-                        int npos = (static_cast < AbstractClipItem* >(items.at(i))->startPos()).frames(m_fps) - sceneBoundingRect().width();
-                        newPos.setX(npos);
-                    } else {
-                        // get pos just after colliding clip
-                        int npos = static_cast < AbstractClipItem* >(items.at(i))->endPos().frames(m_fps);
-                        newPos.setX(npos);
-                    }
-                    return newPos;
-                }
+GenTime AbstractGroupItem::duration()
+{
+    QList <QGraphicsItem *> children = childItems();
+    GenTime start = GenTime(-1.0);
+    GenTime end = GenTime();
+    for (int i = 0; i < children.count(); ++i) {
+        if (children.at(i)->type() != GroupWidget) {
+            AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
+            if (item) {
+                if (start < GenTime() || item->startPos() < start)
+                    start = item->startPos();
+                if (item->endPos() > end)
+                    end = item->endPos();
             }
+        } else {
+            children << children.at(i)->childItems();
         }
-        return newPos;
     }
-    return QGraphicsItem::itemChange(change, value);
+    return end - start;
 }
 
+#include "abstractgroupitem.moc"