X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fabstractclipitem.cpp;h=9c191d36e9dddb3b05e5f4ad91705ecec5ffa9d9;hb=880efc8572a7df65453dfb5736de6455fe129a86;hp=9076051e04de9ab0e2c5bc0941af97ee9a3eb654;hpb=b93354f1ba8628a6f07b3960dec0ee35dfe4bdd9;p=kdenlive

diff --git a/src/abstractclipitem.cpp b/src/abstractclipitem.cpp
index 9076051e..9c191d36 100644
--- a/src/abstractclipitem.cpp
+++ b/src/abstractclipitem.cpp
@@ -18,87 +18,142 @@
  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  ***************************************************************************/
 
-#include <QGraphicsScene>
-#include <QGraphicsView>
-#include <QScrollBar>
-#include <QToolTip>
+#include "abstractclipitem.h"
+#include "customtrackscene.h"
+#include "kdenlivesettings.h"
 
 #include <KDebug>
 #include <KLocale>
 
-#include "abstractclipitem.h"
-#include "customtrackscene.h"
-#include "kdenlivesettings.h"
+#include <QPainter>
+#include <QToolTip>
+#include <QGraphicsSceneMouseEvent>
+
+AbstractClipItem::AbstractClipItem(const ItemInfo info, const QRectF& rect, double fps) :
+        QObject(),
+        QGraphicsRectItem(rect),
+        m_info(info),
+        m_editedKeyframe(-1),
+        m_selectedKeyframe(0),
+        m_keyframeFactor(1),
+        m_fps(fps)
+#if QT_VERSION >= 0x040600
+        , m_closeAnimation(NULL)
+#endif
+{
+    setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
+#if QT_VERSION >= 0x040600
+    setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
+#endif
+}
 
-AbstractClipItem::AbstractClipItem(const ItemInfo info, const QRectF& rect, double fps): QGraphicsRectItem(rect), m_track(0), m_fps(fps), m_editedKeyframe(-1), m_selectedKeyframe(0), m_keyframeFactor(1) {
-    setFlags(/*QGraphicsItem::ItemClipsToShape | */QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
-    setTrack(info.track);
-    m_startPos = info.startPos;
-    m_cropDuration = info.endPos - info.startPos;
+AbstractClipItem::~AbstractClipItem()
+{
+#if QT_VERSION >= 0x040600
+    if (m_closeAnimation) delete m_closeAnimation;
+#endif
 }
 
-ItemInfo AbstractClipItem::info() const {
-    ItemInfo itemInfo;
-    itemInfo.startPos = startPos();
-    itemInfo.endPos = endPos();
-    itemInfo.cropStart = m_cropStart;
-    itemInfo.track = track();
-    return itemInfo;
+void AbstractClipItem::closeAnimation()
+{
+#if QT_VERSION >= 0x040600
+    if (m_closeAnimation) return;
+    m_closeAnimation = new QPropertyAnimation(this, "rect");
+    connect(m_closeAnimation, SIGNAL(finished()), this, SLOT(deleteLater()));
+    m_closeAnimation->setDuration(200);
+    QRectF r = rect();
+    QRectF r2 = r;
+    r2.setLeft(r.left() + r.width() / 2);
+    r2.setTop(r.top() + r.height() / 2);
+    r2.setWidth(1);
+    r2.setHeight(1);
+    m_closeAnimation->setStartValue(r);
+    m_closeAnimation->setEndValue(r2);
+    m_closeAnimation->setEasingCurve(QEasingCurve::InQuad);
+    m_closeAnimation->start();
+#endif
 }
 
-GenTime AbstractClipItem::endPos() const {
-    return m_startPos + m_cropDuration;
+ItemInfo AbstractClipItem::info() const
+{
+    ItemInfo info = m_info;
+    info.cropStart = cropStart();
+    info.endPos = endPos();
+    return info;
 }
 
-int AbstractClipItem::track() const {
-    return m_track;
+int AbstractClipItem::defaultZValue() const
+{
+    return 2;
 }
 
-GenTime AbstractClipItem::cropStart() const {
-    return m_cropStart;
+GenTime AbstractClipItem::endPos() const
+{
+    return m_info.startPos + m_info.cropDuration;
 }
 
-GenTime AbstractClipItem::cropDuration() const {
-    return m_cropDuration;
+int AbstractClipItem::track() const
+{
+    return m_info.track;
 }
 
-void AbstractClipItem::setCropStart(GenTime pos) {
-    m_cropStart = pos;
+GenTime AbstractClipItem::cropStart() const
+{
+    return m_info.cropStart;
 }
 
-void AbstractClipItem::updateItem() {
-    m_track = (int)(scenePos().y() / KdenliveSettings::trackheight());
-    m_startPos = GenTime((int) scenePos().x(), m_fps);
+GenTime AbstractClipItem::cropDuration() const
+{
+    return m_info.cropDuration;
 }
 
-void AbstractClipItem::updateRectGeometry() {
+void AbstractClipItem::setCropStart(GenTime pos)
+{
+    m_info.cropStart = pos;
+}
+
+void AbstractClipItem::updateItem()
+{
+    m_info.track = (int)(scenePos().y() / KdenliveSettings::trackheight());
+    m_info.startPos = GenTime((int) scenePos().x(), m_fps);
+}
+
+void AbstractClipItem::updateRectGeometry()
+{
     setRect(0, 0, cropDuration().frames(m_fps) - 0.02, rect().height());
 }
 
-void AbstractClipItem::resizeStart(int posx, double speed) {
-    GenTime durationDiff = GenTime(posx, m_fps) - m_startPos;
+void AbstractClipItem::resizeStart(int posx)
+{
+    GenTime durationDiff = GenTime(posx, m_fps) - m_info.startPos;
     if (durationDiff == GenTime()) return;
     //kDebug() << "-- RESCALE DIFF=" << durationDiff.frames(25) << ", CLIP: " << startPos().frames(25) << "-" << endPos().frames(25);
 
     if (type() == AVWIDGET && cropStart() + durationDiff < GenTime()) {
         durationDiff = GenTime() - cropStart();
-    } else if (durationDiff >= m_cropDuration) {
+    } else if (durationDiff >= cropDuration()) {
         return;
-        if (m_cropDuration > GenTime(3, m_fps)) durationDiff = GenTime(3, m_fps);
+        if (cropDuration() > GenTime(3, m_fps)) durationDiff = GenTime(3, m_fps);
         else return;
     }
+    //kDebug()<<"// DURATION DIFF: "<<durationDiff.frames(25)<<", POS: "<<pos().x();
+    m_info.startPos += durationDiff;
 
-    m_startPos += durationDiff;
-    if (type() == AVWIDGET) m_cropStart += durationDiff * speed;
-    m_cropDuration = m_cropDuration - durationDiff * speed;
-
+    if (type() == AVWIDGET) {
+        m_info.cropStart += durationDiff;
+    }
+    m_info.cropDuration = m_info.cropDuration - durationDiff;
     setRect(0, 0, cropDuration().frames(m_fps) - 0.02, rect().height());
-    setPos(m_startPos.frames(m_fps), pos().y());
-    if ((int) pos().x() != posx) {
+    moveBy(durationDiff.frames(m_fps), 0);
+    //setPos(m_startPos.frames(m_fps), pos().y());
+    if ((int) scenePos().x() != posx) {
         //kDebug()<<"//////  WARNING, DIFF IN XPOS: "<<pos().x()<<" == "<<m_startPos.frames(m_fps);
         GenTime diff = GenTime((int) pos().x() - posx, m_fps);
-        if (type() == AVWIDGET) m_cropStart = m_cropStart + diff;
-        m_cropDuration = m_cropDuration - diff;
+
+        if (type() == AVWIDGET) {
+            m_info.cropStart += diff;
+        }
+        m_info.cropDuration = m_info.cropDuration - diff;
         setRect(0, 0, cropDuration().frames(m_fps) - 0.02, rect().height());
         //kDebug()<<"// NEW START: "<<m_startPos.frames(25)<<", NW DUR: "<<m_cropDuration.frames(25);
     }
@@ -125,18 +180,16 @@ void AbstractClipItem::resizeStart(int posx, double speed) {
         }*/
 }
 
-void AbstractClipItem::resizeEnd(int posx, double speed, bool updateKeyFrames) {
+void AbstractClipItem::resizeEnd(int posx)
+{
     GenTime durationDiff = GenTime(posx, m_fps) - endPos();
     if (durationDiff == GenTime()) return;
-    //kDebug() << "// DUR DIFF1:" << durationDiff.frames(25) << ", ADJUSTED: " << durationDiff.frames(25) * speed << ", SPED:" << speed;
     if (cropDuration() + durationDiff <= GenTime()) {
         durationDiff = GenTime() - (cropDuration() - GenTime(3, m_fps));
-    } else if (cropStart() + cropDuration() + durationDiff >= maxDuration()) {
-        //kDebug() << "// MAX OVERLOAD:" << cropDuration().frames(25) << " + " << durationDiff.frames(25) << ", MAX:" << maxDuration().frames(25);
-        durationDiff = maxDuration() - cropDuration() - cropStart();
     }
-    //kDebug() << "// DUR DIFF2:" << durationDiff.frames(25) << ", ADJUSTED: " << durationDiff.frames(25) * speed << ", SPED:" << speed;
-    m_cropDuration += durationDiff * speed;
+
+    m_info.cropDuration += durationDiff;
+
     setRect(0, 0, cropDuration().frames(m_fps) - 0.02, rect().height());
     if (durationDiff > GenTime()) {
         QList <QGraphicsItem *> collisionList = collidingItems(Qt::IntersectsItemBoundingRect);
@@ -147,7 +200,7 @@ void AbstractClipItem::resizeEnd(int posx, double speed, bool updateKeyFrames) {
                 kDebug() << "/////////  CURRENT: " << startPos().frames(25) << "x" << endPos().frames(25) << ", RECT: " << rect() << "-" << pos();
                 kDebug() << "/////////  COLLISION: " << ((AbstractClipItem *)item)->startPos().frames(25) << "x" << ((AbstractClipItem *)item)->endPos().frames(25) << ", RECT: " << ((AbstractClipItem *)item)->rect() << "-" << item->pos();*/
                 GenTime diff = ((AbstractClipItem *)item)->startPos() - GenTime(1, m_fps) - startPos();
-                m_cropDuration = diff * speed;
+                m_info.cropDuration = diff;
                 setRect(0, 0, cropDuration().frames(m_fps) - 0.02, rect().height());
                 break;
             }
@@ -155,83 +208,38 @@ void AbstractClipItem::resizeEnd(int posx, double speed, bool updateKeyFrames) {
     }
 }
 
-GenTime AbstractClipItem::duration() const {
-    return m_cropDuration;
-}
-
-GenTime AbstractClipItem::startPos() const {
-    return m_startPos;
+GenTime AbstractClipItem::startPos() const
+{
+    return m_info.startPos;
 }
 
-void AbstractClipItem::setTrack(int track) {
-    m_track = track;
+void AbstractClipItem::setTrack(int track)
+{
+    m_info.track = track;
 }
 
-double AbstractClipItem::fps() const {
+double AbstractClipItem::fps() const
+{
     return m_fps;
 }
 
-GenTime AbstractClipItem::maxDuration() const {
-    return m_maxDuration;
+void AbstractClipItem::updateFps(double fps)
+{
+    m_fps = fps;
+    setPos((qreal) startPos().frames(m_fps), pos().y());
+    updateRectGeometry();
 }
 
-void AbstractClipItem::setMaxDuration(const GenTime &max) {
-    m_maxDuration = max;
-}
-
-QPainterPath AbstractClipItem::upperRectPart(QRectF br) {
-    QPainterPath roundRectPathUpper;
-    double roundingY = 20;
-    double roundingX = 20;
-    double offset = 1;
-
-    while (roundingX > br.width() / 2) {
-        roundingX = roundingX / 2;
-        roundingY = roundingY / 2;
-    }
-    int br_endx = (int)(br.x() + br .width() - offset);
-    int br_startx = (int)(br.x() + offset);
-    int br_starty = (int)(br.y());
-    int br_halfy = (int)(br.y() + br.height() / 2 - offset);
-    int br_endy = (int)(br.y() + br.height());
-
-    roundRectPathUpper.moveTo(br_endx  , br_halfy);
-    roundRectPathUpper.arcTo(br_endx - roundingX , br_starty , roundingX, roundingY, 0.0, 90.0);
-    roundRectPathUpper.lineTo(br_startx + roundingX , br_starty);
-    roundRectPathUpper.arcTo(br_startx , br_starty , roundingX, roundingY, 90.0, 90.0);
-    roundRectPathUpper.lineTo(br_startx , br_halfy);
-
-    return roundRectPathUpper;
-}
-
-QPainterPath AbstractClipItem::lowerRectPart(QRectF br) {
-    QPainterPath roundRectPathLower;
-    double roundingY = 20;
-    double roundingX = 20;
-    double offset = 1;
-
-    int br_endx = (int)(br.x() + br .width() - offset);
-    int br_startx = (int)(br.x() + offset);
-    int br_starty = (int)(br.y());
-    int br_halfy = (int)(br.y() + br.height() / 2 - offset);
-    int br_endy = (int)(br.y() + br.height() - 1);
-
-    while (roundingX > br.width() / 2) {
-        roundingX = roundingX / 2;
-        roundingY = roundingY / 2;
-    }
-    roundRectPathLower.moveTo(br_startx, br_halfy);
-    roundRectPathLower.arcTo(br_startx , br_endy - roundingY , roundingX, roundingY, 180.0, 90.0);
-    roundRectPathLower.lineTo(br_endx - roundingX  , br_endy);
-    roundRectPathLower.arcTo(br_endx - roundingX , br_endy - roundingY, roundingX, roundingY, 270.0, 90.0);
-    roundRectPathLower.lineTo(br_endx  , br_halfy);
-    return roundRectPathLower;
+GenTime AbstractClipItem::maxDuration() const
+{
+    return m_maxDuration;
 }
 
-void AbstractClipItem::drawKeyFrames(QPainter *painter, QRectF exposedRect) {
+void AbstractClipItem::drawKeyFrames(QPainter *painter, QRectF /*exposedRect*/)
+{
     if (m_keyframes.count() < 2) return;
     QRectF br = rect();
-    double maxw = br.width() / m_cropDuration.frames(m_fps);
+    double maxw = br.width() / cropDuration().frames(m_fps);
     double maxh = br.height() / 100.0 * m_keyframeFactor;
     double x1;
     double y1;
@@ -239,7 +247,8 @@ void AbstractClipItem::drawKeyFrames(QPainter *painter, QRectF exposedRect) {
     double y2;
 
     // draw line showing default value
-    if (isSelected()) {
+    bool active = isSelected() || (parentItem() && parentItem()->isSelected());
+    if (active) {
         x1 = br.x();
         x2 = br.right();
         y1 = br.bottom() - m_keyframeDefault * maxh;
@@ -247,16 +256,15 @@ void AbstractClipItem::drawKeyFrames(QPainter *painter, QRectF exposedRect) {
         QLineF l2 = painter->matrix().map(l);
         painter->setPen(QColor(168, 168, 168, 180));
         painter->drawLine(l2);
-        l2.translate(0, 1);
         painter->setPen(QColor(108, 108, 108, 180));
-        painter->drawLine(l2);
+        painter->drawLine(l2.translated(0, 1));
         painter->setPen(QColor(Qt::white));
     }
 
     // draw keyframes
-    QMap<int, double>::const_iterator i = m_keyframes.constBegin();
+    QMap<int, int>::const_iterator i = m_keyframes.constBegin();
     QColor color(Qt::blue);
-    x1 = br.x() + maxw * (i.key() - m_cropStart.frames(m_fps));
+    x1 = br.x() + maxw * (i.key() - cropStart().frames(m_fps));
     y1 = br.bottom() - i.value() * maxh;
     QLineF l2;
     while (i != m_keyframes.constEnd()) {
@@ -264,33 +272,38 @@ void AbstractClipItem::drawKeyFrames(QPainter *painter, QRectF exposedRect) {
         else color = QColor(Qt::blue);
         ++i;
         if (i == m_keyframes.constEnd()) break;
-        x2 = br.x() + maxw * (i.key() - m_cropStart.frames(m_fps));
+        x2 = br.x() + maxw * (i.key() - cropStart().frames(m_fps));
         y2 = br.bottom() - i.value() * maxh;
         QLineF l(x1, y1, x2, y2);
         l2 = painter->matrix().map(l);
         painter->drawLine(l2);
-        if (isSelected()) {
-            painter->fillRect(l2.x1() - 3, l2.y1() - 3, 6, 6, QBrush(color));
+        if (active) {
+            const QRectF frame(l2.x1() - 3, l2.y1() - 3, 6, 6);
+            painter->fillRect(frame, color);
         }
         x1 = x2;
         y1 = y2;
     }
-    if (isSelected()) painter->fillRect(l2.x2() - 3, l2.y2() - 3, 6, 6, QBrush(color));
+    if (active) {
+        const QRectF frame(l2.x2() - 3, l2.y2() - 3, 6, 6);
+        painter->fillRect(frame, color);
+    }
 }
 
-int AbstractClipItem::mouseOverKeyFrames(QPointF pos) {
-    QRectF br = sceneBoundingRect();
-    double maxw = br.width() / m_cropDuration.frames(m_fps);
+int AbstractClipItem::mouseOverKeyFrames(QPointF pos, double maxOffset)
+{
+    const QRectF br = sceneBoundingRect();
+    double maxw = br.width() / cropDuration().frames(m_fps);
     double maxh = br.height() / 100.0 * m_keyframeFactor;
     if (m_keyframes.count() > 1) {
-        QMap<int, double>::const_iterator i = m_keyframes.constBegin();
+        QMap<int, int>::const_iterator i = m_keyframes.constBegin();
         double x1;
         double y1;
         while (i != m_keyframes.constEnd()) {
-            x1 = br.x() + maxw * (i.key() - m_cropStart.frames(m_fps));
+            x1 = br.x() + maxw * (i.key() - cropStart().frames(m_fps));
             y1 = br.bottom() - i.value() * maxh;
-            if (qAbs(pos.x() - x1) < 6 && qAbs(pos.y() - y1) < 6) {
-                setToolTip("[" + QString::number((GenTime(i.key(), m_fps) - m_cropStart).seconds(), 'f', 2) + i18n("seconds") + ", " + QString::number(i.value(), 'f', 1) + "%]");
+            if (qAbs(pos.x() - x1) < maxOffset && qAbs(pos.y() - y1) < 10) {
+                setToolTip('[' + QString::number((GenTime(i.key(), m_fps) - cropStart()).seconds(), 'f', 2) + i18n("seconds") + ", " + QString::number(i.value(), 'f', 1) + "%]");
                 return i.key();
             } else if (x1 > pos.x()) break;
             ++i;
@@ -300,29 +313,33 @@ int AbstractClipItem::mouseOverKeyFrames(QPointF pos) {
     return -1;
 }
 
-void AbstractClipItem::updateSelectedKeyFrame() {
+void AbstractClipItem::updateSelectedKeyFrame()
+{
     if (m_editedKeyframe == -1) return;
     QRectF br = sceneBoundingRect();
-    double maxw = br.width() / m_cropDuration.frames(m_fps);
+    double maxw = br.width() / cropDuration().frames(m_fps);
     double maxh = br.height() / 100.0 * m_keyframeFactor;
-    update(br.x() + maxw * (m_selectedKeyframe - m_cropStart.frames(m_fps)) - 3, br.bottom() - m_keyframes[m_selectedKeyframe] * maxh - 3, 12, 12);
+    update(br.x() + maxw *(m_selectedKeyframe - cropStart().frames(m_fps)) - 3, br.bottom() - m_keyframes[m_selectedKeyframe] * maxh - 3, 12, 12);
     m_selectedKeyframe = m_editedKeyframe;
-    update(br.x() + maxw * (m_selectedKeyframe - m_cropStart.frames(m_fps)) - 3, br.bottom() - m_keyframes[m_selectedKeyframe] * maxh - 3, 12, 12);
+    update(br.x() + maxw *(m_selectedKeyframe - cropStart().frames(m_fps)) - 3, br.bottom() - m_keyframes[m_selectedKeyframe] * maxh - 3, 12, 12);
 }
 
-int AbstractClipItem::selectedKeyFramePos() const {
+int AbstractClipItem::selectedKeyFramePos() const
+{
     return m_editedKeyframe;
 }
 
-double AbstractClipItem::selectedKeyFrameValue() const {
+double AbstractClipItem::selectedKeyFrameValue() const
+{
     return m_keyframes[m_editedKeyframe];
 }
 
-void AbstractClipItem::updateKeyFramePos(const GenTime pos, const double value) {
+void AbstractClipItem::updateKeyFramePos(const GenTime pos, const double value)
+{
     if (!m_keyframes.contains(m_selectedKeyframe)) return;
     int newpos = (int) pos.frames(m_fps);
-    int start = m_cropStart.frames(m_fps);
-    int end = (m_cropStart + m_cropDuration).frames(m_fps);
+    int start = cropStart().frames(m_fps);
+    int end = (cropStart() + cropDuration()).frames(m_fps) - 1;
     newpos = qMax(newpos, start);
     newpos = qMin(newpos, end);
     if (value < -50 && m_selectedKeyframe != start && m_selectedKeyframe != end) {
@@ -343,31 +360,34 @@ void AbstractClipItem::updateKeyFramePos(const GenTime pos, const double value)
     newval = qMin(newval, 100.0);
     newval = newval / m_keyframeFactor;
     if (m_selectedKeyframe != newpos) m_keyframes.remove(m_selectedKeyframe);
-    m_keyframes[newpos] = newval;
+    m_keyframes[newpos] = (int) newval;
     m_selectedKeyframe = newpos;
     update();
 }
 
-double AbstractClipItem::keyFrameFactor() const {
+double AbstractClipItem::keyFrameFactor() const
+{
     return m_keyframeFactor;
 }
 
-void AbstractClipItem::addKeyFrame(const GenTime pos, const double value) {
+void AbstractClipItem::addKeyFrame(const GenTime pos, const double value)
+{
     QRectF br = sceneBoundingRect();
     double maxh = 100.0 / br.height() / m_keyframeFactor;
-    double newval = (br.bottom() - value) * maxh;
-    kDebug() << "Rect: " << br << "/ SCENE: " << sceneBoundingRect() << ", VALUE: " << value << ", MAX: " << maxh << ", NEWVAL: " << newval;
+    int newval = (br.bottom() - value) * maxh;
+    //kDebug() << "Rect: " << br << "/ SCENE: " << sceneBoundingRect() << ", VALUE: " << value << ", MAX: " << maxh << ", NEWVAL: " << newval;
     int newpos = (int) pos.frames(m_fps) ;
     m_keyframes[newpos] = newval;
     m_selectedKeyframe = newpos;
     update();
 }
 
-bool AbstractClipItem::hasKeyFrames() const {
+bool AbstractClipItem::hasKeyFrames() const
+{
     return !m_keyframes.isEmpty();
 }
 
-QRect AbstractClipItem::visibleRect() {
+/*QRect AbstractClipItem::visibleRect() {
     QRect rectInView;
     if (scene()->views().size() > 0) {
         rectInView = scene()->views()[0]->viewport()->rect();
@@ -376,22 +396,37 @@ QRect AbstractClipItem::visibleRect() {
         //kDebug() << scene()->views()[0]->viewport()->rect() << " " <<  scene()->views()[0]->horizontalScrollBar()->value();
     }
     return rectInView;
-}
+}*/
 
-CustomTrackScene* AbstractClipItem::projectScene() {
+CustomTrackScene* AbstractClipItem::projectScene()
+{
     if (scene()) return static_cast <CustomTrackScene*>(scene());
     return NULL;
 }
 
-void AbstractClipItem::setItemLocked(bool locked) {
+void AbstractClipItem::setItemLocked(bool locked)
+{
     if (locked) {
         setSelected(false);
         setFlag(QGraphicsItem::ItemIsMovable, false);
         setFlag(QGraphicsItem::ItemIsSelectable, false);
-    } else setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
+    } else {
+        setFlag(QGraphicsItem::ItemIsMovable, true);
+        setFlag(QGraphicsItem::ItemIsSelectable, true);
+    }
 }
 
-bool AbstractClipItem::isItemLocked() const {
+bool AbstractClipItem::isItemLocked() const
+{
     return !(flags() & (QGraphicsItem::ItemIsSelectable));
 }
 
+// virtual
+void AbstractClipItem::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 QGraphicsItem::mousePressEvent(event);
+}
+