]> git.sesse.net Git - kdenlive/blobdiff - src/clipitem.cpp
projectlist load now also audio/mpeg(mp3 is this here), draw fix of audiothumb, use...
[kdenlive] / src / clipitem.cpp
index a09b3096082ffeaa84d0216d5ea032b50d10f5b0..5e5f6c1268989d2393ccd4b4d4b710f905628c1b 100644 (file)
 #include <QTimer>
 #include <QStyleOptionGraphicsItem>
 #include <QGraphicsScene>
-
+#include <QGraphicsView>
+#include <QScrollBar>
+#include <QMimeData>
+#include <QApplication>
 
 #include <KDebug>
 
 #include <mlt++/Mlt.h>
 
 #include "clipitem.h"
+#include "customtrackview.h"
 #include "renderer.h"
+#include "events.h"
 #include "kdenlivesettings.h"
 
-ClipItem::ClipItem(QDomElement xml, int track, int startpos, const QRectF & rect, int duration)
-    : QGraphicsRectItem(rect), m_xml(xml), m_resizeMode(NONE), m_grabPoint(0), m_maxTrack(0), m_track(track), m_startPos(startpos), m_hasThumbs(false), startThumbTimer(NULL), endThumbTimer(NULL), m_startFade(0), m_endFade(0)
-{
-  //setToolTip(name);
-
-  m_clipName = xml.attribute("name");
-  if (m_clipName.isEmpty()) m_clipName = KUrl(xml.attribute("resource")).fileName();
-
-  m_producer = xml.attribute("id").toInt();
-
-  m_clipType = (CLIPTYPE) xml.attribute("type").toInt();
-
-  m_cropStart = xml.attribute("in", 0).toInt();
-  m_maxDuration = xml.attribute("duration", 0).toInt();
-  if (m_maxDuration == 0) m_maxDuration = xml.attribute("out", 0).toInt() - m_cropStart;
-
-  if (duration != -1) m_cropDuration = duration;
-  else m_cropDuration = m_maxDuration;
-
-  setFlags(QGraphicsItem::ItemClipsToShape | QGraphicsItem::ItemClipsChildrenToShape | QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
-
-  setBrush(QColor(100, 100, 150));
-  if (m_clipType == VIDEO || m_clipType == AV) {
-    m_hasThumbs = true;
-    //connect(this, SIGNAL(getThumb(int, int)), clip->thumbProducer(), SLOT(extractImage(int, int)));
-    //connect(clip->thumbProducer(), SIGNAL(thumbReady(int, QPixmap)), this, SLOT(slotThumbReady(int, QPixmap)));
-    QTimer::singleShot(300, this, SLOT(slotFetchThumbs()));
-
-    startThumbTimer = new QTimer(this);
-    startThumbTimer->setSingleShot(true);
-    connect(startThumbTimer, SIGNAL(timeout()), this, SLOT(slotGetStartThumb()));
-    endThumbTimer = new QTimer(this);
-    endThumbTimer->setSingleShot(true);
-    connect(endThumbTimer, SIGNAL(timeout()), this, SLOT(slotGetEndThumb()));
-
-  }
-  else if (m_clipType == COLOR) {
-    QString colour = xml.attribute("colour");
-    colour = colour.replace(0, 2, "#");
-    setBrush(QColor(colour.left(7)));
-  }
-  else if (m_clipType == IMAGE) {
-    m_startPix = KThumb::getImage(KUrl(xml.attribute("resource")), 50 * KdenliveSettings::project_display_ratio(), 50);
-  }
-}
-
 ClipItem::ClipItem(DocClipBase *clip, int track, int startpos, const QRectF & rect, int duration)
-    : QGraphicsRectItem(rect), m_clip(clip), m_resizeMode(NONE), m_grabPoint(0), m_maxTrack(0), m_track(track), m_startPos(startpos), m_hasThumbs(false), startThumbTimer(NULL), endThumbTimer(NULL), m_startFade(0), m_endFade(0)
+: QGraphicsRectItem(rect), m_clip(clip), m_resizeMode(NONE), m_grabPoint(0), m_maxTrack(0), m_track(track), m_startPos(startpos), m_hasThumbs(false), startThumbTimer(NULL), endThumbTimer(NULL), m_startFade(0), m_endFade(0), m_effectsCounter(0),audioThumbWasDrawn(false),audioThumbReady(false), m_opacity(1.0), m_timeLine(0)
 {
   //setToolTip(name);
   kDebug()<<"*******  CREATING NEW TML CLIP, DUR: "<<duration;
@@ -92,14 +51,26 @@ ClipItem::ClipItem(DocClipBase *clip, int track, int startpos, const QRectF & re
   m_maxDuration = duration;
   if (duration != -1) m_cropDuration = duration;
   else m_cropDuration = m_maxDuration;
+  setAcceptDrops (true);
+
+/*
+  m_cropStart = xml.attribute("in", 0).toInt();
+  m_maxDuration = xml.attribute("duration", 0).toInt();
+  if (m_maxDuration == 0) m_maxDuration = xml.attribute("out", 0).toInt() - m_cropStart;
+
+  if (duration != -1) m_cropDuration = duration;
+  else m_cropDuration = m_maxDuration;*/
 
-  setFlags(QGraphicsItem::ItemClipsToShape | QGraphicsItem::ItemClipsChildrenToShape | QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 
+  setFlags(QGraphicsItem::ItemClipsToShape | QGraphicsItem::ItemClipsChildrenToShape | QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
+  connect (this , SIGNAL (prepareAudioThumb(double,QPainterPath,int,int)) , this, SLOT (slotPrepareAudioThumb(double,QPainterPath,int,int)));
+  
   setBrush(QColor(100, 100, 150));
   if (m_clipType == VIDEO || m_clipType == AV) {
     m_hasThumbs = true;
     connect(this, SIGNAL(getThumb(int, int)), clip->thumbProducer(), SLOT(extractImage(int, int)));
-    connect(clip->thumbProducer(), SIGNAL(thumbReady(int, QPixmap)), this, SLOT(slotThumbReady(int, QPixmap)));
+    connect(clip->thumbProducer(), SIGNAL(thumbReady(int, QPixmap)), this, SLOT(slotThumbReady(int, QPixmap))); 
+    connect(clip, SIGNAL (gotAudioData()), this, SLOT (slotGotAudioData()));
     QTimer::singleShot(300, this, SLOT(slotFetchThumbs()));
 
     startThumbTimer = new QTimer(this);
@@ -118,6 +89,9 @@ ClipItem::ClipItem(DocClipBase *clip, int track, int startpos, const QRectF & re
   else if (m_clipType == IMAGE) {
     m_startPix = KThumb::getImage(KUrl(m_xml.attribute("resource")), 50 * KdenliveSettings::project_display_ratio(), 50);
   }
+  else if (m_clipType == AUDIO) {
+    connect(clip, SIGNAL (gotAudioData()), this, SLOT (slotGotAudioData()));
+  }
 }
 
 
@@ -149,11 +123,21 @@ void ClipItem::slotThumbReady(int frame, QPixmap pix)
   update();
 }
 
+void ClipItem::slotGotAudioData(){
+  audioThumbReady=true;
+  update();
+}
+
 int ClipItem::type () const
 {
   return 70000;
 }
 
+DocClipBase *ClipItem::baseClip()
+{
+  return m_clip;
+}
+
 QDomElement ClipItem::xml() const
 {
   return m_xml;
@@ -189,37 +173,83 @@ int ClipItem::startPos()
   return m_startPos;
 }
 
+int ClipItem::cropStart()
+{
+  return m_cropStart;
+}
+
 int ClipItem::endPos()
 {
   return m_startPos + m_cropDuration;
 }
 
+void ClipItem::flashClip()
+{
+  if (m_timeLine == 0) {
+    m_timeLine = new QTimeLine(750, this);
+    connect(m_timeLine, SIGNAL(valueChanged(qreal)), this, SLOT(animate(qreal)));
+  }
+  m_timeLine->start();
+}
+
+void ClipItem::animate(qreal value)
+{
+  m_opacity = value;
+  update();
+}
+
 // virtual 
  void ClipItem::paint(QPainter *painter,
                            const QStyleOptionGraphicsItem *option,
                            QWidget *widget)
  {
+    painter->setOpacity(m_opacity);
+    QBrush paintColor = brush();
+    if (isSelected()) paintColor = QBrush(QColor(150, 50, 100));
     QRectF br = rect();
+        QRect rectInView;//this is the rect that is visible by the user
+        if (scene()->views().size()>0){ 
+               rectInView=scene()->views()[0]->viewport()->rect();
+               rectInView.moveTo(scene()->views()[0]->horizontalScrollBar()->value(),scene()->views()[0]->verticalScrollBar()->value());
+               rectInView.adjust(-10,-10,10,10);//make view rect 10 pixel greater on each site, or repaint after scroll event
+                //kDebug() << scene()->views()[0]->viewport()->rect() << " " <<  scene()->views()[0]->horizontalScrollBar()->value();
+        }
+        if (rectInView.isNull())
+                return;
+        QPainterPath clippath;
+        clippath.addRect(rectInView);
+        int startpixel=rectInView.x()-rect().x();//start and endpixel that is viewable from rect()
+        if (startpixel<0)
+                startpixel=0;
+        int endpixel=rectInView.width()+rectInView.x();
+        if (endpixel<0)
+                endpixel=0;
+        
     painter->setRenderHints(QPainter::Antialiasing);
-    QPainterPath roundRectPath;
+    QPainterPath roundRectPathUpper,roundRectPathLower;
     double roundingY = 20;
     double roundingX = 20;
     double offset = 1;
     painter->setClipRect(option->exposedRect);
     if (roundingX > br.width() / 2) roundingX = br.width() / 2;
     //kDebug()<<"-----PAINTING, SCAL: "<<scale<<", height: "<<br.height();
-    roundRectPath.moveTo(br.x() + br .width() - offset, br.y() + roundingY);
-    roundRectPath.arcTo(br.x() + br .width() - roundingX - offset, br.y(), roundingX, roundingY, 0.0, 90.0);
-    roundRectPath.lineTo(br.x() + roundingX, br.y());
-    roundRectPath.arcTo(br.x() + offset, br.y(), roundingX, roundingY, 90.0, 90.0);
-    roundRectPath.lineTo(br.x() + offset, br.y() + br.height() - roundingY);
-    roundRectPath.arcTo(br.x() + offset, br.y() + br.height() - roundingY - offset, roundingX, roundingY, 180.0, 90.0);
-    roundRectPath.lineTo(br.x() + br .width() - roundingX, br.y() + br.height() - offset);
-    roundRectPath.arcTo(br.x() + br .width() - roundingX - offset, br.y() + br.height() - roundingY - offset, roundingX, roundingY, 270.0, 90.0);
-    roundRectPath.closeSubpath();
-    painter->setClipPath(roundRectPath, Qt::IntersectClip);
-    //painter->fillPath(roundRectPath, brush()); //, QBrush(QColor(Qt::red)));
-    painter->fillRect(br, brush());
+        roundRectPathUpper.moveTo(br.x() + br .width() - offset, br.y() + br.height()/2 - offset);
+        roundRectPathUpper.arcTo(br.x() + br .width() - roundingX - offset, br.y(), roundingX, roundingY, 0.0, 90.0);
+        roundRectPathUpper.lineTo(br.x() + roundingX, br.y());
+        roundRectPathUpper.arcTo(br.x() + offset, br.y(), roundingX, roundingY, 90.0, 90.0);
+        roundRectPathUpper.lineTo(br.x() + offset, br.y() + br.height()/2 - offset);
+        roundRectPathUpper.closeSubpath();
+        
+        roundRectPathLower.moveTo(br.x() + offset, br.y() + br.height()/2 - offset);
+        roundRectPathLower.arcTo(br.x() + offset, br.y() + br.height() - roundingY - offset, roundingX, roundingY, 180.0, 90.0);
+        roundRectPathLower.lineTo(br.x() + br .width() - roundingX, br.y() + br.height() - offset);
+        roundRectPathLower.arcTo(br.x() + br .width() - roundingX - offset, br.y() + br.height() - roundingY - offset, roundingX, roundingY, 270.0, 90.0);
+        roundRectPathLower.lineTo(br.x() + br .width() - offset, br.y()+ br.height()/2 - offset);
+        roundRectPathLower.closeSubpath();
+        
+        painter->setClipPath(roundRectPathUpper.united(roundRectPathLower).intersected(clippath), Qt::IntersectClip);
+        //painter->fillPath(roundRectPath, brush()); //, QBrush(QColor(Qt::red)));
+        painter->fillRect(br.intersected(rectInView), paintColor);
     //painter->fillRect(QRectF(br.x() + br.width() - m_endPix.width(), br.y(), m_endPix.width(), br.height()), QBrush(QColor(Qt::black)));
 
     // draw thumbnails
@@ -238,6 +268,22 @@ int ClipItem::endPos()
       QLineF l2(br.x() + m_startPix.width(), br.y(), br.x() + m_startPix.width(), br.y() + br.height());
       painter->drawLine(l2);
     }
+   if ( ( m_clipType == AV || m_clipType==AUDIO || true) && audioThumbReady ){
+                
+                QPainterPath path= m_clipType==AV ? roundRectPathLower : roundRectPathUpper.united(roundRectPathLower);
+                painter->fillPath(path,QBrush(QColor(200,200,200,127)));
+                
+                int channels=2;
+                double pixelForOneFrame=(double)br.width()/duration();
+
+                emit prepareAudioThumb(pixelForOneFrame,path,startpixel,endpixel+200);//200 more for less missing parts before repaint after scrolling
+
+                for (int startCache=startpixel-startpixel%100; startCache < endpixel+300;startCache+=100){
+                        if (audioThumbCachePic.contains(startCache) && !audioThumbCachePic[startCache].isNull() )
+                                painter->drawPixmap(path.boundingRect().x()+startCache,path.boundingRect().y(),audioThumbCachePic[startCache]);
+                }
+
+       }
 
     // draw start / end fades
     double scale = br.width() / m_cropDuration;
@@ -272,18 +318,37 @@ int ClipItem::endPos()
       }
     }
 
-    painter->setClipRect(option->exposedRect);
     QPen pen = painter->pen();
+    pen.setColor(Qt::white);
+    //pen.setStyle(Qt::DashDotDotLine); //Qt::DotLine);
+    // Draw clip name
+    QString effects = effectNames().join(" / ");
+    if (!effects.isEmpty()) {
+      painter->setPen(pen);
+      QFont font = painter->font();
+      QFont smallFont = font;
+      smallFont.setPointSize(8);
+      painter->setFont(smallFont);
+      QRectF txtBounding = painter->boundingRect(br, Qt::AlignLeft | Qt::AlignTop, " " + effects + " ");
+      painter->fillRect(txtBounding, QBrush(QColor(0,0,0,150)));
+      painter->drawText(txtBounding, Qt::AlignCenter, effects);
+      pen.setColor(Qt::black);
+      painter->setPen(pen);
+      painter->setFont(font);
+    }
+
     pen.setColor(Qt::red);
-    pen.setStyle(Qt::DashDotDotLine); //Qt::DotLine);
+    //pen.setStyle(Qt::DashDotDotLine); //Qt::DotLine);
+    if (isSelected()) painter->setPen(pen);
+    painter->setClipRect(option->exposedRect);
+    painter->drawPath(roundRectPathUpper.united(roundRectPathLower).intersected(clippath));
 
-    // Draw clip name
     QRectF txtBounding = painter->boundingRect(br, Qt::AlignCenter, " " + m_clipName + " ");
     painter->fillRect(txtBounding, QBrush(QColor(255,255,255,150)));
     painter->drawText(txtBounding, Qt::AlignCenter, m_clipName);
 
-    if (isSelected()) painter->setPen(pen);
-    painter->drawPath(roundRectPath);
+
+        //painter->fillRect(startpixel,0,startpixel+endpixel,(int)br.height(),  QBrush(QColor(255,255,255,150)));
     //painter->fillRect(QRect(br.x(), br.y(), roundingX, roundingY), QBrush(QColor(Qt::green)));
 
     /*QRectF recta(rect().x(), rect().y(), scale,rect().height());
@@ -314,6 +379,81 @@ OPERATIONTYPE ClipItem::operationMode(QPointF pos, double scale)
     return MOVE;
 }
 
+void ClipItem::slotPrepareAudioThumb(double pixelForOneFrame,QPainterPath path,int startpixel, int endpixel){
+       int channels=2;
+       
+       QRectF re=path.boundingRect();
+       
+       //if ( (!audioThumbWasDrawn || framePixelWidth!=pixelForOneFrame ) && !baseClip()->audioFrameChache.isEmpty()){
+       
+               for (int startCache=startpixel-startpixel%100;startCache+100<endpixel ;startCache+=100){
+                       //kDebug() << "creating " << startCache;
+                       //if (framePixelWidth!=pixelForOneFrame  || 
+                       if (framePixelWidth==pixelForOneFrame && audioThumbCachePic.contains(startCache))
+                               continue;
+                       if (audioThumbCachePic[startCache].isNull() || framePixelWidth!=pixelForOneFrame){
+                               audioThumbCachePic[startCache]=QPixmap(100,re.height());
+                               audioThumbCachePic[startCache].fill(QColor(200,200,200,127));
+                       }
+                       bool fullAreaDraw=pixelForOneFrame<10;
+                       QMap<int,QPainterPath > positiveChannelPaths;
+                       QMap<int,QPainterPath > negativeChannelPaths;
+                       QPainter pixpainter(&audioThumbCachePic[startCache]);
+                       QPen audiopen;
+                       audiopen.setWidth(0);
+                       pixpainter.setPen(audiopen);
+                       //pixpainter.setRenderHint(QPainter::Antialiasing,true);
+                       //pixpainter.drawLine(0,0,100,re.height());
+                       int channelHeight=audioThumbCachePic[startCache].height()/channels;
+                       
+                       for (int i=0;i<channels;i++){
+                               
+                               positiveChannelPaths[i].moveTo(0,channelHeight*i+ channelHeight/2);
+                               negativeChannelPaths[i].moveTo(0,channelHeight*i+ channelHeight/2);
+                       }
+                       
+                       for (int samples=0;samples<=100;samples++){
+                               double frame=(double)(samples+startCache-0)/pixelForOneFrame;
+                               int sample=(frame-(int)(frame))*20 ;// AUDIO_FRAME_SIZE
+                               if (frame<0 || sample< 0 || sample>19 )
+                                       continue;
+                               QMap<int,QByteArray> frame_channel_data=baseClip()->audioFrameChache[(int)frame];
+                               
+                               for (int channel=0;channel<channels && frame_channel_data[channel].size()> 0;channel++){
+                                       
+                                       int y=channelHeight*channel+ channelHeight/2;
+                                       int delta=(int)(frame_channel_data[channel][sample] -127/2 )  * channelHeight/ 64;
+                                       if (fullAreaDraw){
+                                               positiveChannelPaths[channel].lineTo(samples,0.1+y+qAbs( delta ));      
+                                               negativeChannelPaths[channel].lineTo(samples,0.1+y-qAbs( delta ));
+                                       }else{
+                                               positiveChannelPaths[channel].lineTo(samples,0.1+y+delta);      
+                                               negativeChannelPaths[channel].lineTo(samples,0.1+y-delta);
+                                       }
+                               }
+                               if (fullAreaDraw && samples==100){
+                                       positiveChannelPaths[channels].lineTo(samples,0);
+                                       negativeChannelPaths[channels].lineTo(samples,0);
+                                       positiveChannelPaths[channels].lineTo(0,0);
+                                       negativeChannelPaths[channels].lineTo(0,0);
+                               }
+                                       
+                       }
+                       for (int i=0;i<channels;i++){
+                               if (fullAreaDraw){
+                                       //pixpainter.fillPath(positiveChannelPaths[i].united(negativeChannelPaths[i]),QBrush(Qt::SolidPattern));//or singleif looks better
+                                       pixpainter.setBrush(QBrush(QColor(200,200,100,200)));
+                                       pixpainter.drawPath(positiveChannelPaths[i].united(negativeChannelPaths[i]));//or singleif looks better
+                               }else
+                                       pixpainter.drawPath(positiveChannelPaths[i]);
+                       }
+               }
+               //audioThumbWasDrawn=true;
+               framePixelWidth=pixelForOneFrame;
+                       
+       //}
+}
+
 int ClipItem::fadeIn() const
 {
   return m_startFade;
@@ -369,6 +509,7 @@ void ClipItem::setFadeOut(int pos, double scale)
   double origX = rect().x();
   double origY = rect().y();
   bool success = true;
+  if (x < 0) return;
   setRect(x * scale, origY + offset, rect().width(), rect().height());
   QList <QGraphicsItem *> collisionList = collidingItems(Qt::IntersectsItemBoundingRect);
   if (collisionList.size() == 0) m_track = newTrack;
@@ -480,6 +621,124 @@ void ClipItem::setTrack(int track)
   m_track = track;
 }
 
+int ClipItem::effectsCounter()
+{
+  return m_effectsCounter++;
+}
+
+int ClipItem::effectsCount()
+{
+  return m_effectList.size();
+}
+
+QStringList ClipItem::effectNames()
+{
+  return m_effectList.effectNames();
+}
+
+QDomElement ClipItem::effectAt(int ix)
+{
+  return m_effectList.at(ix);
+}
+
+void ClipItem::setEffectAt(int ix, QDomElement effect)
+{
+  kDebug()<<"CHange EFFECT AT: "<<ix<<", CURR: "<<m_effectList.at(ix).attribute("tag")<<", NEW: "<<effect.attribute("tag");
+  m_effectList.insert(ix, effect);
+  m_effectList.removeAt(ix + 1);
+  update(boundingRect());
+}
+
+QMap <QString, QString> ClipItem::addEffect(QDomElement effect)
+{
+  QMap <QString, QString> effectParams;
+  m_effectList.append(effect);
+  effectParams["tag"] = effect.attribute("tag");
+  effectParams["kdenlive_ix"] = effect.attribute("kdenlive_ix");
+  QString state = effect.attribute("disabled");
+  if (!state.isEmpty()) effectParams["disabled"] = state;
+  QDomNodeList params = effect.elementsByTagName("parameter");
+  for (int i = 0; i < params.count(); i++) {
+    QDomElement e = params.item(i).toElement();
+    if (!e.isNull()){
+      effectParams[e.attribute("name")] = e.attribute("value");
+    }
+    if (!e.attribute("factor").isEmpty()){
+      effectParams[e.attribute("name")] =  QString::number(effectParams[e.attribute("name")].toDouble()/e.attribute("factor").toDouble());
+    }
+  }
+  flashClip();
+  update(boundingRect());
+  return effectParams;
+}
+
+QMap <QString, QString> ClipItem::getEffectArgs(QDomElement effect)
+{
+  QMap <QString, QString> effectParams;
+  effectParams["tag"] = effect.attribute("tag");
+  effectParams["kdenlive_ix"] = effect.attribute("kdenlive_ix");
+  QString state = effect.attribute("disabled");
+  if (!state.isEmpty()) effectParams["disabled"] = state;
+  QDomNodeList params = effect.elementsByTagName("parameter");
+  for (int i = 0; i < params.count(); i++) {
+    QDomElement e = params.item(i).toElement();
+         if (e.attribute("name").contains(";")){
+                 QString format=e.attribute("format");
+                 QStringList separators=format.split("%d",QString::SkipEmptyParts);
+                 QStringList values=e.attribute("value").split(QRegExp("[,:;x]"));
+                 QString neu;
+                 QTextStream txtNeu(&neu);
+                 if (values.size()>0)
+                         txtNeu << (int)values[0].toDouble();
+                 for (int i=0;i<separators.size() && i+1<values.size();i++){
+                         txtNeu << separators[i];
+                         txtNeu << (int)(values[i+1].toDouble());
+                 }
+                 effectParams["start"]=neu; 
+         }else
+    if (!e.isNull()){
+      effectParams[e.attribute("name")] = e.attribute("value");
+    }
+    if (!e.attribute("factor").isEmpty()){
+      effectParams[e.attribute("name")] =  QString::number(effectParams[e.attribute("name")].toDouble()/e.attribute("factor").toDouble());
+    }
+  }
+  return effectParams;
+}
+
+void ClipItem::deleteEffect(QString index)
+{
+  for (int i = 0; i < m_effectList.size(); ++i) {
+    if (m_effectList.at(i).attribute("kdenlive_ix") == index) {
+      m_effectList.removeAt(i);
+      break;
+    }
+  }
+  flashClip();
+  update(boundingRect());
+}
+
+//virtual
+void ClipItem::dropEvent ( QGraphicsSceneDragDropEvent * event )  
+{
+    QString effects = QString(event->mimeData()->data("kdenlive/effectslist"));
+    QDomDocument doc;
+    doc.setContent(effects, true);
+    QDomElement e = doc.documentElement();
+    CustomTrackView *view = (CustomTrackView *) scene()->views()[0];
+    if (view) view->slotAddEffect(e, GenTime(m_startPos, 25), m_track);
+}
+
+//virtual
+void ClipItem::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
+{
+  event->setAccepted(event->mimeData()->hasFormat("kdenlive/effectslist"));
+}
+
+void ClipItem::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
+{
+    Q_UNUSED(event);
+}
 
 // virtual 
 /*