* Make sure user cannot create transition with in point bigger than out point

* FIx bug in project opening that could cause a track to be completely offset and corrupt project

svn path=/branches/KDE4/; revision=2886

diff --git a/src/clipmanager.cpp b/src/clipmanager.cpp
index bb33d430873436534bddd6b253a11facba5e0cd8..e47b500f36fdac68c7a89c31bb1f50508c86142c 100644 (file)
--- a/src/clipmanager.cpp
+++ b/src/clipmanager.cpp
@@ -138,6 +138,16 @@ DocClipBase *ClipManager::getClipById(QString clipId) {
     return NULL;
 }
 
+DocClipBase *ClipManager::getClipByResource(QString resource) {
+    for (int i = 0; i < m_clipList.count(); i++) {
+        if (m_clipList.at(i)->getProperty("resource") == resource) {
+            return m_clipList.at(i);
+        }
+    }
+    return NULL;
+}
+
+
 void ClipManager::slotAddClipList(const KUrl::List urls, const QString group, const QString &groupId) {
     QUndoCommand *addClips = new QUndoCommand();
     addClips->setText(i18n("Add clips"));

diff --git a/src/clipmanager.h b/src/clipmanager.h
index 8e127b32b454efa75ea12573ab108056035a002e..2d8c5fb7e8e39c21754be0f5c6c4a15d17c81f4d 100644 (file)
--- a/src/clipmanager.h
+++ b/src/clipmanager.h
@@ -54,6 +54,7 @@ Q_OBJECT public:
     void slotAddColorClipFile(const QString name, const QString color, QString duration, const QString group, const QString &groupId);
     void slotAddSlideshowClipFile(const QString name, const QString path, int count, const QString duration, const bool loop, const bool fade, const QString &luma_duration, const QString &luma_file, const int softness, const QString group, const QString &groupId);
     DocClipBase *getClipById(QString clipId);
+    DocClipBase *getClipByResource(QString resource);
     void slotDeleteClip(const QString & clipId);
     void setThumbsProgress(const QString &message, int progress);
     void checkAudioThumbs();

diff --git a/src/customtrackview.cpp b/src/customtrackview.cpp
index af1568969f157f6c2c4aa5878e2f661d43c0b0a7..bc548a9d39944c3a1e84fe9b0e172f18580c7a82 100644 (file)
--- a/src/customtrackview.cpp
+++ b/src/customtrackview.cpp
@@ -1215,6 +1215,10 @@ void CustomTrackView::slotAddTransitionToSelectedClips(QDomElement transition) {
 }
 
 void CustomTrackView::slotAddTransition(ClipItem* clip, ItemInfo transitionInfo, int endTrack, QDomElement transition) {
+    if (transitionInfo.startPos >= transitionInfo.endPos) {
+        emit displayMessage(i18n("Invalid transition"), ErrorMessage);
+        return;
+    }
     AddTransitionCommand* command = new AddTransitionCommand(this, transitionInfo, endTrack, transition, false, true);
     m_commandStack->push(command);
     m_document->setModified(true);
@@ -1222,11 +1226,14 @@ void CustomTrackView::slotAddTransition(ClipItem* clip, ItemInfo transitionInfo,
 
 void CustomTrackView::addTransition(ItemInfo transitionInfo, int endTrack, QDomElement params) {
     Transition *tr = new Transition(transitionInfo, endTrack, m_document->fps(), params, true);
-    scene()->addItem(tr);
-
     //kDebug() << "---- ADDING transition " << params.attribute("value");
-    m_document->renderer()->mltAddTransition(tr->transitionTag(), endTrack, m_document->tracksCount() - transitionInfo.track, transitionInfo.startPos, transitionInfo.endPos, tr->toXML());
-    m_document->setModified(true);
+    if (m_document->renderer()->mltAddTransition(tr->transitionTag(), endTrack, m_document->tracksCount() - transitionInfo.track, transitionInfo.startPos, transitionInfo.endPos, tr->toXML())) {
+        scene()->addItem(tr);
+        m_document->setModified(true);
+    } else {
+        emit displayMessage(i18n("Cannot add transition"), ErrorMessage);
+        delete tr;
+    }
 }
 
 void CustomTrackView::deleteTransition(ItemInfo transitionInfo, int endTrack, QDomElement params) {
@@ -1315,8 +1322,12 @@ void CustomTrackView::dropEvent(QDropEvent * event) {
                 // add transparency transition
                 int endTrack = getPreviousVideoTrack(info.track);
                 Transition *tr = new Transition(info, endTrack, m_document->fps(), MainWindow::transitions.getEffectByTag("composite", "alphatransparency"), true);
-                scene()->addItem(tr);
-                m_document->renderer()->mltAddTransition(tr->transitionTag(), endTrack, m_document->tracksCount() - info.track, info.startPos, info.endPos, tr->toXML());
+                if (m_document->renderer()->mltAddTransition(tr->transitionTag(), endTrack, m_document->tracksCount() - info.track, info.startPos, info.endPos, tr->toXML())) {
+                    scene()->addItem(tr);
+                } else {
+                    emit displayMessage(i18n("Cannot add transition"), ErrorMessage);
+                    delete tr;
+                }
             }
             info.track = m_document->tracksCount() - item->track();
             m_document->renderer()->mltInsertClip(info, item->xml(), item->baseClip()->producer(item->track()));
@@ -1854,11 +1865,15 @@ void CustomTrackView::mouseReleaseEvent(QMouseEvent * event) {
                 }
             }
             if (m_dragItem->type() == TRANSITIONWIDGET && (m_dragItemInfo.startPos != info.startPos || m_dragItemInfo.track != info.track)) {
-                MoveTransitionCommand *command = new MoveTransitionCommand(this, m_dragItemInfo, info, false);
-                m_commandStack->push(command);
-                Transition *transition = (Transition *) m_dragItem;
-                transition->updateTransitionEndTrack(getPreviousVideoTrack(m_dragItem->track()));
-                m_document->renderer()->mltMoveTransition(transition->transitionTag(), (int)(m_document->tracksCount() - m_dragItemInfo.track), (int)(m_document->tracksCount() - m_dragItem->track()), transition->transitionEndTrack(), m_dragItemInfo.startPos, m_dragItemInfo.endPos, info.startPos, info.endPos);
+                Transition *transition = static_cast <Transition *>(m_dragItem);
+                if (!m_document->renderer()->mltMoveTransition(transition->transitionTag(), (int)(m_document->tracksCount() - m_dragItemInfo.track), (int)(m_document->tracksCount() - m_dragItem->track()), transition->transitionEndTrack(), m_dragItemInfo.startPos, m_dragItemInfo.endPos, info.startPos, info.endPos)) {
+                    MoveTransitionCommand *command = new MoveTransitionCommand(this, info, m_dragItemInfo, true);
+                    m_commandStack->push(command);
+                } else {
+                    MoveTransitionCommand *command = new MoveTransitionCommand(this, m_dragItemInfo, info, false);
+                    m_commandStack->push(command);
+                    transition->updateTransitionEndTrack(getPreviousVideoTrack(m_dragItem->track()));
+                }
             }
         } else {
             // Moving several clips. We need to delete them and readd them to new position,
@@ -1941,7 +1956,8 @@ void CustomTrackView::mouseReleaseEvent(QMouseEvent * event) {
                     ItemInfo trInfo = transition->info();
                     ItemInfo newTrInfo = trInfo;
                     newTrInfo.startPos = m_dragItem->startPos();
-                    new MoveTransitionCommand(this, trInfo, newTrInfo, true, resizeCommand);
+                    if (newTrInfo.startPos < newTrInfo.endPos)
+                        new MoveTransitionCommand(this, trInfo, newTrInfo, true, resizeCommand);
                 }
                 // Check if there is an automatic transition on that clip (upper track)
                 transition = getTransitionItemAtStart(m_dragItemInfo.startPos, m_dragItemInfo.track - 1);
@@ -1950,7 +1966,7 @@ void CustomTrackView::mouseReleaseEvent(QMouseEvent * event) {
                     ItemInfo newTrInfo = trInfo;
                     newTrInfo.startPos = m_dragItem->startPos();
                     ClipItem * upperClip = getClipItemAt(m_dragItemInfo.startPos, m_dragItemInfo.track - 1);
-                    if (!upperClip || !upperClip->baseClip()->isTransparent()) {
+                    if ((!upperClip || !upperClip->baseClip()->isTransparent()) && newTrInfo.startPos < newTrInfo.endPos) {
                         new MoveTransitionCommand(this, trInfo, newTrInfo, true, resizeCommand);
                     }
                 }
@@ -1962,10 +1978,16 @@ void CustomTrackView::mouseReleaseEvent(QMouseEvent * event) {
                 emit displayMessage(i18n("Error when resizing clip"), ErrorMessage);
             }
         } else if (m_dragItem->type() == TRANSITIONWIDGET) {
-            MoveTransitionCommand *command = new MoveTransitionCommand(this, m_dragItemInfo, info, false);
-            m_commandStack->push(command);
             Transition *transition = static_cast <Transition *>(m_dragItem);
-            m_document->renderer()->mltMoveTransition(transition->transitionTag(), (int)(m_document->tracksCount() - m_dragItemInfo.track), (int)(m_document->tracksCount() - m_dragItemInfo.track), transition->transitionEndTrack(), m_dragItemInfo.startPos, m_dragItemInfo.endPos, info.startPos, info.endPos);
+            if (!m_document->renderer()->mltMoveTransition(transition->transitionTag(), (int)(m_document->tracksCount() - m_dragItemInfo.track), (int)(m_document->tracksCount() - m_dragItemInfo.track), transition->transitionEndTrack(), m_dragItemInfo.startPos, m_dragItemInfo.endPos, info.startPos, info.endPos)) {
+                emit displayMessage(i18n("Cannot move transition"), ErrorMessage);
+                MoveTransitionCommand *command = new MoveTransitionCommand(this, info, m_dragItemInfo, true);
+                m_commandStack->push(command);
+            } else {
+                MoveTransitionCommand *command = new MoveTransitionCommand(this, m_dragItemInfo, info, false);
+                m_commandStack->push(command);
+            }
+
         }
 
         //m_document->renderer()->doRefresh();
@@ -1985,7 +2007,7 @@ void CustomTrackView::mouseReleaseEvent(QMouseEvent * event) {
                     ItemInfo trInfo = tr->info();
                     ItemInfo newTrInfo = trInfo;
                     newTrInfo.endPos = m_dragItem->endPos();
-                    new MoveTransitionCommand(this, trInfo, newTrInfo, true, resizeCommand);
+                    if (newTrInfo.endPos > newTrInfo.startPos) new MoveTransitionCommand(this, trInfo, newTrInfo, true, resizeCommand);
                 }
 
                 // Check if there is an automatic transition on that clip (upper track)
@@ -1995,7 +2017,7 @@ void CustomTrackView::mouseReleaseEvent(QMouseEvent * event) {
                     ItemInfo newTrInfo = trInfo;
                     newTrInfo.endPos = m_dragItem->endPos();
                     ClipItem * upperClip = getClipItemAtEnd(m_dragItemInfo.endPos, m_dragItemInfo.track - 1);
-                    if (!upperClip || !upperClip->baseClip()->isTransparent()) {
+                    if ((!upperClip || !upperClip->baseClip()->isTransparent()) && newTrInfo.endPos > newTrInfo.startPos) {
                         new MoveTransitionCommand(this, trInfo, newTrInfo, true, resizeCommand);
                     }
                 }
@@ -2008,10 +2030,15 @@ void CustomTrackView::mouseReleaseEvent(QMouseEvent * event) {
                 emit displayMessage(i18n("Error when resizing clip"), ErrorMessage);
             }
         } else if (m_dragItem->type() == TRANSITIONWIDGET) {
-            MoveTransitionCommand *command = new MoveTransitionCommand(this, m_dragItemInfo, info, false);
-            m_commandStack->push(command);
             Transition *transition = static_cast <Transition *>(m_dragItem);
-            m_document->renderer()->mltMoveTransition(transition->transitionTag(), (int)(m_document->tracksCount() - m_dragItemInfo.track), (int)(m_document->tracksCount() - m_dragItemInfo.track), 0, m_dragItemInfo.startPos, m_dragItemInfo.endPos, info.startPos, info.endPos);
+            if (!m_document->renderer()->mltMoveTransition(transition->transitionTag(), (int)(m_document->tracksCount() - m_dragItemInfo.track), (int)(m_document->tracksCount() - m_dragItemInfo.track), 0, m_dragItemInfo.startPos, m_dragItemInfo.endPos, info.startPos, info.endPos)) {
+                emit displayMessage(i18n("Cannot move transition"), ErrorMessage);
+                MoveTransitionCommand *command = new MoveTransitionCommand(this, info, m_dragItemInfo, true);
+                m_commandStack->push(command);
+            } else {
+                MoveTransitionCommand *command = new MoveTransitionCommand(this, m_dragItemInfo, info, false);
+                m_commandStack->push(command);
+            }
         }
         //m_document->renderer()->doRefresh();
     } else if (m_operationMode == FADEIN) {
@@ -2187,8 +2214,12 @@ void CustomTrackView::addClip(QDomElement xml, const QString &clipId, ItemInfo i
         // add transparency transition
         int endTrack = getPreviousVideoTrack(info.track);
         Transition *tr = new Transition(info, endTrack, m_document->fps(), MainWindow::transitions.getEffectByTag("composite", "alphatransparency"), true);
-        scene()->addItem(tr);
-        m_document->renderer()->mltAddTransition(tr->transitionTag(), endTrack, m_document->tracksCount() - info.track, info.startPos, info.endPos, tr->toXML());
+        if (m_document->renderer()->mltAddTransition(tr->transitionTag(), endTrack, m_document->tracksCount() - info.track, info.startPos, info.endPos, tr->toXML())) scene()->addItem(tr);
+        else {
+            emit displayMessage(i18n("Cannot add transition"), ErrorMessage);
+            delete tr;
+        }
+
     }
 
     baseclip->addReference();
@@ -2988,7 +3019,9 @@ void CustomTrackView::pasteClip() {
             info.endPos = tr->endPos() + offset;
             info.track = tr->track() + trackOffset;
             if (canBePastedTo(info, TRANSITIONWIDGET)) {
-                new AddTransitionCommand(this, info, tr->transitionEndTrack() + trackOffset, tr->toXML(), false, true, pasteClips);
+                if (info.startPos >= info.endPos) {
+                    emit displayMessage(i18n("Invalid transition"), ErrorMessage);
+                } else new AddTransitionCommand(this, info, tr->transitionEndTrack() + trackOffset, tr->toXML(), false, true, pasteClips);
             } else emit displayMessage(i18n("Cannot paste transition to selected place"), ErrorMessage);
         }
     }

diff --git a/src/renderer.cpp b/src/renderer.cpp
index b619faeb704f574b1752e9d221bf9e48047e4eef..696495d7051e07854d53a201f542745a67b9aacc 100644 (file)
--- a/src/renderer.cpp
+++ b/src/renderer.cpp
@@ -2290,7 +2290,11 @@ bool Render::mltMoveClip(int startTrack, int endTrack, int moveStart, int moveEn
     return true;
 }
 
-void Render::mltMoveTransition(QString type, int startTrack, int newTrack, int newTransitionTrack, GenTime oldIn, GenTime oldOut, GenTime newIn, GenTime newOut) {
+bool Render::mltMoveTransition(QString type, int startTrack, int newTrack, int newTransitionTrack, GenTime oldIn, GenTime oldOut, GenTime newIn, GenTime newOut) {
+    int new_in = (int)newIn.frames(m_fps);
+    int new_out = (int)newOut.frames(m_fps) - 1;
+    if (new_in >= new_out) return false;
+
     Mlt::Service service(m_mltProducer->parent().get_service());
     Mlt::Tractor tractor(service);
     Mlt::Field *field = tractor.field();
@@ -2306,9 +2310,6 @@ void Render::mltMoveTransition(QString type, int startTrack, int newTrack, int n
     QString resource = mlt_properties_get(properties, "mlt_service");
     int old_pos = (int)(oldIn.frames(m_fps) + oldOut.frames(m_fps)) / 2;
 
-    int new_in = (int)newIn.frames(m_fps);
-    int new_out = (int)newOut.frames(m_fps) - 1;
-
     while (mlt_type == "transition") {
         mlt_transition tr = (mlt_transition) nextservice;
         int currentTrack = mlt_transition_get_b_track(tr);
@@ -2336,6 +2337,7 @@ void Render::mltMoveTransition(QString type, int startTrack, int newTrack, int n
     m_isBlocked = false;
     mlt_service_unlock(service.get_service());
     m_mltConsumer->set("refresh", 1);
+    return true;
 }
 
 void Render::mltUpdateTransition(QString oldTag, QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml) {
@@ -2612,8 +2614,8 @@ void Render::mltMoveTransparency(int startTime, int endTime, int startTrack, int
 }
 
 
-void Render::mltAddTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool do_refresh) {
-
+bool Render::mltAddTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool do_refresh) {
+    if (in >= out) return false;
     QMap<QString, QString> args = mltGetTransitionParamsFromXml(xml);
     Mlt::Service service(m_mltProducer->parent().get_service());
 
@@ -2643,6 +2645,7 @@ void Render::mltAddTransition(QString tag, int a_track, int b_track, GenTime in,
     field->plant_transition(*transition, a_track, b_track);
     delete[] transId;
     refresh();
+    return true;
 }
 
 void Render::mltSavePlaylist() {

diff --git a/src/renderer.h b/src/renderer.h
index c301d72849dc6e504434687b474be4d949323ee5..a579bdc5861ff80461619f421aaaff53dff308d4 100644 (file)
--- a/src/renderer.h
+++ b/src/renderer.h
@@ -162,8 +162,8 @@ Q_OBJECT public:
     bool mltEditEffect(int track, GenTime position, EffectsParameterList params);
     void mltMoveEffect(int track, GenTime position, int oldPos, int newPos);
     void mltChangeTrackState(int track, bool mute, bool blind);
-    void mltMoveTransition(QString type, int startTrack,  int newTrack, int newTransitionTrack, GenTime oldIn, GenTime oldOut, GenTime newIn, GenTime newOut);
-    void mltAddTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool refresh = true);
+    bool mltMoveTransition(QString type, int startTrack,  int newTrack, int newTransitionTrack, GenTime oldIn, GenTime oldOut, GenTime newIn, GenTime newOut);
+    bool mltAddTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool refresh = true);
     void mltDeleteTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool refresh = true);
     void mltUpdateTransition(QString oldTag, QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml);
     void mltUpdateTransitionParams(QString type, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml);

diff --git a/src/trackview.cpp b/src/trackview.cpp
index d5eec1590ba9515b0941d8a11e5b72833cd6cd9e..0e34a54cafd2fa98b9e741455c9179b6f5bb81ec 100644 (file)
--- a/src/trackview.cpp
+++ b/src/trackview.cpp
@@ -270,18 +270,17 @@ void TrackView::parseDocument(QDomDocument doc) {
             transitionInfo.endPos = GenTime(e.attribute("out").toInt() + 1, m_doc->fps());
             transitionInfo.track = m_projectTracks - 1 - b_track;
             //kDebug() << "///////////////   +++++++++++  ADDING TRANSITION ON TRACK: " << b_track << ", TOTAL TRKA: " << m_projectTracks;
-           if (transitionInfo.startPos >= transitionInfo.endPos) {
-               // invalid transition, remove it.
-               m_documentErrors.append(i18n("Removed invalid transition: %1\n", e.attribute("id")));
-               kDebug()<<"///// REMOVED INVALID TRANSITION: "<<e.attribute("id");
+            if (transitionInfo.startPos >= transitionInfo.endPos) {
+                // invalid transition, remove it.
+                m_documentErrors.append(i18n("Removed invalid transition: %1\n", e.attribute("id")));
+                kDebug() << "///// REMOVED INVALID TRANSITION: " << e.attribute("id");
                 tractor.removeChild(transitions.item(i));
                 i--;
-           }
-           else {
-               Transition *tr = new Transition(transitionInfo, a_track, m_doc->fps(), base, isAutomatic);
-               if (forceTrack) tr->setForcedTrack(true, a_track);
-               m_scene->addItem(tr);
-           }
+            } else {
+                Transition *tr = new Transition(transitionInfo, a_track, m_doc->fps(), base, isAutomatic);
+                if (forceTrack) tr->setForcedTrack(true, a_track);
+                m_scene->addItem(tr);
+            }
         }
     }
 
@@ -562,7 +561,39 @@ int TrackView::slotAddProjectTrack(int ix, QDomElement xml) {
                         }
                     }
                 }
-            } else kWarning() << "CANNOT INSERT CLIP " << id;
+            } else {
+                // The clip in playlist was not listed in the kdenlive producers,
+                // something went wrong, repair required.
+                kWarning() << "CANNOT INSERT CLIP " << id;
+                int out = elem.attribute("out").toInt();
+
+                ItemInfo clipinfo;
+                clipinfo.startPos = GenTime(position, m_doc->fps());
+                clipinfo.endPos = clipinfo.startPos + GenTime(out - in + 1, m_doc->fps());
+                clipinfo.cropStart = GenTime(in, m_doc->fps());
+                clipinfo.track = ix;
+                //kDebug() << "// INSERTING CLIP: " << in << "x" << out << ", track: " << ix << ", ID: " << id << ", SCALE: " << m_scale << ", FPS: " << m_doc->fps();
+
+                DocClipBase *missingClip = getMissingProducer(id);
+                if (!missingClip) {
+                    // We cannot find the producer, something is really wrong, add
+                    // placeholder color clip
+                    QDomElement producerXml;
+                    producerXml.setTagName("producer");
+                    producerXml.setAttribute("resource", "0xff0000ff");
+                    producerXml.setAttribute("mlt_service", "colour");
+                    producerXml.setAttribute("length", "15000");
+                    producerXml.setAttribute("id", id);
+                    missingClip = new DocClipBase(m_doc->clipManager(), producerXml, id);
+                    m_documentErrors.append(i18n("Boken clip producer %1\n", id));
+                } else m_documentErrors.append(i18n("Replaced wrong clip producer %1 with %2\n", id, missingClip->getId()));
+                ClipItem *item = new ClipItem(missingClip, clipinfo, m_doc->fps(), false);
+                m_scene->addItem(item);
+                missingClip->addReference();
+                position += (out - in + 1);
+
+
+            }
             //m_clipList.append(clip);
         }
     }
@@ -575,6 +606,41 @@ int TrackView::slotAddProjectTrack(int ix, QDomElement xml) {
     //track->show();
 }
 
+DocClipBase *TrackView::getMissingProducer(const QString id) const {
+    QDomElement missingXml = QDomElement();
+    QDomDocument doc = m_doc->toXml();
+    QString docRoot = doc.documentElement().attribute("root");
+    if (!docRoot.endsWith('/')) docRoot.append('/');
+    QDomNodeList prods = doc.elementsByTagName("producer");
+    int maxprod = prods.count();
+    for (int i = 0; i < maxprod; i++) {
+        QDomNode m = prods.at(i);
+        QString prodId = m.toElement().attribute("id");
+        if (prodId == id) {
+            missingXml =  m.toElement();
+            break;
+        }
+    }
+    if (missingXml == QDomElement()) return NULL;
+
+    QDomNodeList params = missingXml.childNodes();
+    QString resource;
+    QString mlt_service;
+    for (int j = 0; j < params.count(); j++) {
+        QDomElement e = params.item(j).toElement();
+        if (e.attribute("name") == "resource") {
+            resource = e.firstChild().nodeValue();
+        } else if (e.attribute("name") == "mlt_service") {
+            mlt_service = e.firstChild().nodeValue();
+        }
+    }
+    resource.prepend(docRoot);
+    DocClipBase *missingClip = NULL;
+    if (!resource.isEmpty())
+        missingClip = m_doc->clipManager()->getClipByResource(resource);
+    return missingClip;
+}
+
 QGraphicsScene *TrackView::projectScene() {
     return m_scene;
 }

diff --git a/src/trackview.h b/src/trackview.h
index ab61a690f65e7dd58af26b0f8d99d30fc35140e9..20798f90c1acb9092190cf778ae63b4a45d4252e 100644 (file)
--- a/src/trackview.h
+++ b/src/trackview.h
@@ -39,6 +39,7 @@ class Transition;
 class CustomTrackView;
 class KdenliveDoc;
 class CustomRuler;
+class DocClipBase;
 
 class TrackView : public QWidget {
     Q_OBJECT
@@ -84,6 +85,7 @@ private:
     QString m_documentErrors;
     void parseDocument(QDomDocument doc);
     int slotAddProjectTrack(int ix, QDomElement xml);
+    DocClipBase *getMissingProducer(const QString id) const;
 
 private slots:
     void setCursorPos(int pos);