git.sesse.net Git - kdenlive/blob - src/abstractgroupitem.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Marco Gittler (g.marco@freenet.de)              *
   3  *   Copyright (C) 2008 by Jean-Baptiste Mardelle (jb@kdenlive.org)        *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  19  ***************************************************************************/
  20
  21 #include "abstractgroupitem.h"
  22 #include "abstractclipitem.h"
  23 #include "kdenlivesettings.h"
  24 #include "customtrackscene.h"
  25 #include "customtrackview.h"
  26
  27 #include <KDebug>
  28
  29 #include <QPainter>
  30 #include <QStyleOptionGraphicsItem>
  31 #include <QDomDocument>
  32 #include <QMimeData>
  33 #include <QGraphicsSceneMouseEvent>
  34
  35
  36 AbstractGroupItem::AbstractGroupItem(double /* fps */) :
  37         QObject(),
  38         QGraphicsItemGroup()
  39 {
  40     setZValue(1);
  41     setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
  42 #if QT_VERSION >= 0x040600
  43     setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
  44 #endif
  45     setAcceptDrops(true);
  46     m_resizeInfos = QList <ItemInfo>();
  47 }
  48
  49 int AbstractGroupItem::type() const
  50 {
  51     return GROUPWIDGET;
  52 }
  53
  54 int AbstractGroupItem::track() const
  55 {
  56     //return (int)(scenePos().y() / KdenliveSettings::trackheight());
  57     int topTrack = -1;
  58     QList<QGraphicsItem *> children = childItems();
  59     for (int i = 0; i < children.count(); ++i) {
  60         if (children.at(i)->type() == GROUPWIDGET) {
  61             children.append(children.at(i)->childItems());
  62             continue;
  63         }
  64         AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
  65         if (item && (topTrack == -1 || topTrack > item->track())) {
  66             topTrack = item->track();
  67         }
  68     }
  69     return topTrack;
  70 }
  71
  72 void AbstractGroupItem::setItemLocked(bool locked)
  73 {
  74     if (locked)
  75         setSelected(false);
  76
  77     setFlag(QGraphicsItem::ItemIsMovable, !locked);
  78     setFlag(QGraphicsItem::ItemIsSelectable, !locked);
  79
  80     foreach (QGraphicsItem *child, childItems())
  81         ((AbstractClipItem *)child)->setItemLocked(locked);
  82 }
  83
  84 bool AbstractGroupItem::isItemLocked() const
  85 {
  86     return !(flags() & (QGraphicsItem::ItemIsSelectable));
  87 }
  88
  89 CustomTrackScene* AbstractGroupItem::projectScene()
  90 {
  91     if (scene()) return static_cast <CustomTrackScene*>(scene());
  92     return NULL;
  93 }
  94
  95 QPainterPath AbstractGroupItem::clipGroupShape(QPointF offset) const
  96 {
  97     return groupShape(AVWIDGET, offset);
  98 }
  99
 100 QPainterPath AbstractGroupItem::transitionGroupShape(QPointF offset) const
 101 {
 102     return groupShape(TRANSITIONWIDGET, offset);
 103 }
 104
 105 QPainterPath AbstractGroupItem::groupShape(GRAPHICSRECTITEM type, QPointF offset) const
 106 {
 107     QPainterPath path;
 108     QList<QGraphicsItem *> children = childItems();
 109     for (int i = 0; i < children.count(); i++) {
 110         if (children.at(i)->type() == (int)type) {
 111             QRectF r(children.at(i)->sceneBoundingRect());
 112             r.translate(offset);
 113             path.addRect(r);
 114         } else if (children.at(i)->type() == GROUPWIDGET) {
 115             QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 116             for (int j = 0; j < subchildren.count(); j++) {
 117                 if (subchildren.at(j)->type() == (int)type) {
 118                     QRectF r(subchildren.at(j)->sceneBoundingRect());
 119                     r.translate(offset);
 120                     path.addRect(r);
 121                 }
 122             }
 123         }
 124     }
 125     return path;
 126 }
 127
 128 void AbstractGroupItem::addItem(QGraphicsItem * item)
 129 {
 130     addToGroup(item);
 131     item->setFlag(QGraphicsItem::ItemIsMovable, false);
 132 }
 133
 134 void AbstractGroupItem::removeItem(QGraphicsItem * item)
 135 {
 136     removeFromGroup(item);
 137 }
 138
 139 void AbstractGroupItem::fixItemRect()
 140 {
 141     QPointF start = boundingRect().topLeft();
 142     if (start != QPointF(0, 0)) {
 143         translate(0 - start.x(), 0 - start.y());
 144         setPos(start);
 145     }
 146 }
 147
 148 /*ItemInfo AbstractGroupItem::info() const {
 149     ItemInfo itemInfo;
 150     itemInfo.startPos = m_startPos;
 151     itemInfo.track = m_track;
 152     return itemInfo;
 153 }*/
 154
 155 // virtual
 156 void AbstractGroupItem::paint(QPainter *p, const QStyleOptionGraphicsItem *option, QWidget *)
 157 {
 158     QColor bgcolor(100, 100, 200, 100);
 159     QRectF bound = option->exposedRect.adjusted(0, 0, 1, 1);
 160     p->setClipRect(bound);
 161     p->setBrush(bgcolor);
 162     QPen pen = p->pen();
 163     pen.setColor(QColor(200, 90, 90));
 164     pen.setStyle(Qt::DashLine);
 165     pen.setWidthF(0.0);
 166     p->setPen(pen);
 167     p->drawRoundedRect(boundingRect().adjusted(0, 0, -1, 0), 3, 3);
 168 }
 169
 170 //virtual
 171 QVariant AbstractGroupItem::itemChange(GraphicsItemChange change, const QVariant &value)
 172 {
 173     if (change == QGraphicsItem::ItemSelectedChange) {
 174         if (value.toBool()) setZValue(10);
 175         else setZValue(1);
 176     }
 177     if (change == ItemPositionChange && scene() && parentItem() == 0) {
 178         // calculate new position.
 179         const int trackHeight = KdenliveSettings::trackheight();
 180         QPointF start = sceneBoundingRect().topLeft();
 181         QPointF newPos = value.toPointF();
 182         int xpos = projectScene()->getSnapPointForPos((int)(start.x() + newPos.x() - pos().x()), KdenliveSettings::snaptopoints());
 183
 184         xpos = qMax(xpos, 0);
 185         //kDebug()<<"GRP XPOS:"<<xpos<<", START:"<<start.x()<<",NEW:"<<newPos.x()<<"; SCENE:"<<scenePos().x()<<",POS:"<<pos().x();
 186         newPos.setX((int)(pos().x() + xpos - (int) start.x()));
 187         QStringList lockedTracks = property("locked_tracks").toStringList();
 188         int proposedTrack = (property("y_absolute").toInt() + newPos.y()) / trackHeight;
 189         // Check if top item is a clip or a transition
 190         int offset = 0;
 191         int topTrack = -1;
 192         QList<int> groupTracks;
 193         QList<QGraphicsItem *> children = childItems();
 194         for (int i = 0; i < children.count(); i++) {
 195             int currentTrack = 0;
 196             if (children.at(i)->type() == AVWIDGET || children.at(i)->type() == TRANSITIONWIDGET) {
 197                 currentTrack = static_cast <AbstractClipItem*> (children.at(i))->track();
 198                 if (!groupTracks.contains(currentTrack)) groupTracks.append(currentTrack);
 199             }
 200             else if (children.at(i)->type() == GROUPWIDGET) {
 201                 currentTrack = static_cast <AbstractGroupItem*> (children.at(i))->track();
 202             }
 203             else continue;
 204             if (children.at(i)->type() == AVWIDGET) {
 205                 if (topTrack == -1 || currentTrack <= topTrack) {
 206                     offset = 0;
 207                     topTrack = currentTrack;
 208                 }
 209             } else if (children.at(i)->type() == TRANSITIONWIDGET) {
 210                 if (topTrack == -1 || currentTrack < topTrack) {
 211                     offset = (int)(trackHeight / 3 * 2 - 1);
 212                     topTrack = currentTrack;
 213                 }
 214             } else if (children.at(i)->type() == GROUPWIDGET) {
 215                 QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 216                 bool clipGroup = false;
 217                 for (int j = 0; j < subchildren.count(); j++) {
 218                     if (subchildren.at(j)->type() == AVWIDGET || subchildren.at(j)->type() == TRANSITIONWIDGET) {
 219                         int subTrack = static_cast <AbstractClipItem*> (subchildren.at(j))->track();
 220                         if (!groupTracks.contains(subTrack)) groupTracks.append(subTrack);
 221                         clipGroup = true;
 222                     }
 223                 }
 224                 if (clipGroup) {
 225                     if (topTrack == -1 || currentTrack <= topTrack) {
 226                         offset = 0;
 227                         topTrack = currentTrack;
 228                     }
 229                 } else {
 230                     if (topTrack == -1 || currentTrack < topTrack) {
 231                         offset = (int)(trackHeight / 3 * 2 - 1);
 232                         topTrack = currentTrack;
 233                     }
 234                 }
 235             }
 236         }
 237         // Check no clip in the group goes outside of existing tracks
 238         int maximumTrack = projectScene()->tracksCount() - 1;
 239         int groupHeight = 0;
 240         for (int i = 0; i < groupTracks.count(); i++) {
 241             int offset = groupTracks.at(i) - topTrack;
 242             if (offset > groupHeight) groupHeight = offset;
 243         }
 244         maximumTrack -= groupHeight;
 245         proposedTrack = qMin(proposedTrack, maximumTrack);
 246         proposedTrack = qMax(proposedTrack, 0);
 247         int groupOffset = proposedTrack - topTrack;
 248         if (!lockedTracks.isEmpty()) {
 249             for (int i = 0; i < groupTracks.count(); i++) {
 250                 if (lockedTracks.contains(QString::number(groupTracks.at(i) + groupOffset))) {
 251                     return pos();
 252                 }
 253             }
 254         }
 255         newPos.setY((int)((proposedTrack) * trackHeight) + offset);
 256         //if (newPos == start) return start;
 257
 258         /*if (newPos.x() < 0) {
 259             // If group goes below 0, adjust position to 0
 260             return QPointF(pos().x() - start.x(), pos().y());
 261         }*/
 262
 263         QList<QGraphicsItem*> collidingItems;
 264         QPainterPath shape;
 265         if (projectScene()->editMode() == NORMALEDIT) {
 266             shape = clipGroupShape(newPos - pos());
 267             collidingItems = scene()->items(shape, Qt::IntersectsItemShape);
 268             collidingItems.removeAll(this);
 269             for (int i = 0; i < children.count(); i++) {
 270                 if (children.at(i)->type() == GROUPWIDGET) {
 271                     QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 272                     for (int j = 0; j < subchildren.count(); j++) {
 273                         collidingItems.removeAll(subchildren.at(j));
 274                     }
 275                 }
 276                 collidingItems.removeAll(children.at(i));
 277             }
 278         }
 279         if (!collidingItems.isEmpty()) {
 280             bool forwardMove = xpos > start.x();
 281             int offset = 0;
 282             for (int i = 0; i < collidingItems.count(); i++) {
 283                 QGraphicsItem *collision = collidingItems.at(i);
 284                 if (collision->type() == AVWIDGET) {
 285                     // Collision
 286                     if (newPos.y() != pos().y()) {
 287                         // Track change results in collision, restore original position
 288                         return pos();
 289                     }
 290                     AbstractClipItem *item = static_cast <AbstractClipItem *>(collision);
 291                     if (forwardMove) {
 292                         // Moving forward, determine best pos
 293                         QPainterPath clipPath;
 294                         clipPath.addRect(item->sceneBoundingRect());
 295                         QPainterPath res = shape.intersected(clipPath);
 296                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 297                     } else {
 298                         // Moving backward, determine best pos
 299                         QPainterPath clipPath;
 300                         clipPath.addRect(item->sceneBoundingRect());
 301                         QPainterPath res = shape.intersected(clipPath);
 302                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 303                     }
 304                 }
 305             }
 306             if (offset > 0) {
 307                 if (forwardMove) {
 308                     newPos.setX(newPos.x() - offset);
 309                 } else {
 310                     newPos.setX(newPos.x() + offset);
 311                 }
 312                 // If there is still a collision after our position adjust, restore original pos
 313                 collidingItems = scene()->items(clipGroupShape(newPos - pos()), Qt::IntersectsItemShape);
 314                 collidingItems.removeAll(this);
 315                 for (int i = 0; i < children.count(); i++) {
 316                     if (children.at(i)->type() == GROUPWIDGET) {
 317                         QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 318                         for (int j = 0; j < subchildren.count(); j++) {
 319                             collidingItems.removeAll(subchildren.at(j));
 320                         }
 321                     }
 322                     collidingItems.removeAll(children.at(i));
 323                 }
 324                 for (int i = 0; i < collidingItems.count(); i++)
 325                     if (collidingItems.at(i)->type() == AVWIDGET) return pos();
 326             }
 327         }
 328
 329         if (projectScene()->editMode() == NORMALEDIT) {
 330             shape = transitionGroupShape(newPos - pos());
 331             collidingItems = scene()->items(shape, Qt::IntersectsItemShape);
 332             collidingItems.removeAll(this);
 333             for (int i = 0; i < children.count(); i++) {
 334                 if (children.at(i)->type() == GROUPWIDGET) {
 335                     QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 336                     for (int j = 0; j < subchildren.count(); j++) {
 337                         collidingItems.removeAll(subchildren.at(j));
 338                     }
 339                 }
 340                 collidingItems.removeAll(children.at(i));
 341             }
 342         }
 343         if (collidingItems.isEmpty()) return newPos;
 344         else {
 345             bool forwardMove = xpos > start.x();
 346             int offset = 0;
 347             for (int i = 0; i < collidingItems.count(); i++) {
 348                 QGraphicsItem *collision = collidingItems.at(i);
 349                 if (collision->type() == TRANSITIONWIDGET) {
 350                     // Collision
 351                     if (newPos.y() != pos().y()) {
 352                         // Track change results in collision, restore original position
 353                         return pos();
 354                     }
 355                     AbstractClipItem *item = static_cast <AbstractClipItem *>(collision);
 356                     if (forwardMove) {
 357                         // Moving forward, determine best pos
 358                         QPainterPath clipPath;
 359                         clipPath.addRect(item->sceneBoundingRect());
 360                         QPainterPath res = shape.intersected(clipPath);
 361                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 362                     } else {
 363                         // Moving backward, determine best pos
 364                         QPainterPath clipPath;
 365                         clipPath.addRect(item->sceneBoundingRect());
 366                         QPainterPath res = shape.intersected(clipPath);
 367                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 368                     }
 369                 }
 370             }
 371             if (offset > 0) {
 372                 if (forwardMove) {
 373                     newPos.setX(newPos.x() - offset);
 374                 } else {
 375                     newPos.setX(newPos.x() + offset);
 376                 }
 377                 // If there is still a collision after our position adjust, restore original pos
 378                 collidingItems = scene()->items(transitionGroupShape(newPos - pos()), Qt::IntersectsItemShape);
 379                 for (int i = 0; i < children.count(); i++) {
 380                     collidingItems.removeAll(children.at(i));
 381                 }
 382                 for (int i = 0; i < collidingItems.count(); i++)
 383                     if (collidingItems.at(i)->type() == TRANSITIONWIDGET) return pos();
 384             }
 385         }
 386         return newPos;
 387     }
 388     return QGraphicsItemGroup::itemChange(change, value);
 389 }
 390
 391 //virtual
 392 void AbstractGroupItem::dropEvent(QGraphicsSceneDragDropEvent * event)
 393 {
 394     QString effects = QString::fromUtf8(event->mimeData()->data("kdenlive/effectslist"));
 395     QDomDocument doc;
 396     doc.setContent(effects, true);
 397     QDomElement e = doc.documentElement();
 398     e.setAttribute("kdenlive_ix", 0);
 399     CustomTrackView *view = (CustomTrackView *) scene()->views()[0];
 400     QPointF dropPos = event->scenePos();
 401     QList<QGraphicsItem *> selection = scene()->items(dropPos);
 402     AbstractClipItem *dropChild = NULL;
 403     for (int i = 0; i < selection.count(); i++) {
 404         if (selection.at(i)->type() == AVWIDGET) {
 405             dropChild = (AbstractClipItem *) selection.at(i);
 406             break;
 407         }
 408     }
 409     if (view) view->slotAddGroupEffect(e, this, dropChild);
 410 }
 411
 412 //virtual
 413 void AbstractGroupItem::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
 414 {
 415     event->setAccepted(event->mimeData()->hasFormat("kdenlive/effectslist"));
 416 }
 417
 418 void AbstractGroupItem::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
 419 {
 420     Q_UNUSED(event)
 421 }
 422
 423 // virtual
 424 void AbstractGroupItem::mousePressEvent(QGraphicsSceneMouseEvent * event)
 425 {
 426     if (event->modifiers() & Qt::ShiftModifier) {
 427         // User want to do a rectangle selection, so ignore the event to pass it to the view
 428         event->ignore();
 429     } else {
 430         QList <QGraphicsItem *>list = scene()->items(event->scenePos());
 431         // only allow group move if we click over an item in the group
 432         foreach(const QGraphicsItem *item, list) {
 433             if (item->type() == TRANSITIONWIDGET || item->type() == AVWIDGET) {
 434                 QGraphicsItem::mousePressEvent(event);
 435                 return;
 436             }
 437         }
 438         event->ignore();
 439     }
 440 }
 441
 442 void AbstractGroupItem::resizeStart(int diff)
 443 {
 444     bool info = false;
 445     if (m_resizeInfos.isEmpty())
 446         info = true;
 447     int maximum = diff;
 448     QList <QGraphicsItem *> children = childItems();
 449     QList <AbstractClipItem *> items;
 450     int itemcount = 0;
 451     for (int i = 0; i < children.count(); ++i) {
 452         AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
 453         if (item && item->type() == AVWIDGET) {
 454             items << item;
 455             if (info)
 456                 m_resizeInfos << item->info();
 457             item->resizeStart((int)(m_resizeInfos.at(itemcount).startPos.frames(item->fps())) + diff);
 458             int itemdiff = (int)(item->startPos() - m_resizeInfos.at(itemcount).startPos).frames(item->fps());
 459             if (qAbs(itemdiff) < qAbs(maximum))
 460                 maximum = itemdiff;
 461             ++itemcount;
 462         }
 463     }
 464
 465     for (int i = 0; i < items.count(); ++i)
 466         items.at(i)->resizeStart((int)(m_resizeInfos.at(i).startPos.frames(items.at(i)->fps())) + maximum);
 467 }
 468
 469 void AbstractGroupItem::resizeEnd(int diff)
 470 {
 471     bool info = false;
 472     if (m_resizeInfos.isEmpty())
 473         info = true;
 474     int maximum = diff;
 475     QList <QGraphicsItem *> children = childItems();
 476     QList <AbstractClipItem *> items;
 477     int itemcount = 0;
 478     for (int i = 0; i < children.count(); ++i) {
 479         AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
 480         if (item && item->type() == AVWIDGET) {
 481             items << item;
 482             if (info)
 483                 m_resizeInfos << item->info();
 484             item->resizeEnd((int)(m_resizeInfos.at(itemcount).endPos.frames(item->fps())) + diff);
 485             int itemdiff = (int)(item->endPos() - m_resizeInfos.at(itemcount).endPos).frames(item->fps());
 486             if (qAbs(itemdiff) < qAbs(maximum))
 487                 maximum = itemdiff;
 488             ++itemcount;
 489         }
 490     }
 491
 492     for (int i = 0; i < items.count(); ++i)
 493         items.at(i)->resizeEnd((int)(m_resizeInfos.at(i).endPos.frames(items.at(i)->fps())) + maximum);
 494 }
 495
 496 QList< ItemInfo > AbstractGroupItem::resizeInfos()
 497 {
 498     return m_resizeInfos;
 499 }
 500
 501 void AbstractGroupItem::clearResizeInfos()
 502 {
 503     // m_resizeInfos.clear() will crash in some cases for unknown reasons - ttill
 504     m_resizeInfos = QList <ItemInfo>();
 505 }
 506
 507 GenTime AbstractGroupItem::duration()
 508 {
 509     QList <QGraphicsItem *> children = childItems();
 510     GenTime start = GenTime(-1.0);
 511     GenTime end = GenTime();
 512     for (int i = 0; i < children.count(); ++i) {
 513         if (children.at(i)->type() != GROUPWIDGET) {
 514             AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
 515             if (item) {
 516                 if (start < GenTime() || item->startPos() < start)
 517                     start = item->startPos();
 518                 if (item->endPos() > end)
 519                     end = item->endPos();
 520             }
 521         } else {
 522             children << children.at(i)->childItems();
 523         }
 524     }
 525     return end - start;
 526 }