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::clipGroupSpacerShape(const QPointF &offset) const
  96 {
  97     return spacerGroupShape(AVWidget, offset);
  98 }
  99
 100 QPainterPath AbstractGroupItem::clipGroupShape(const QPointF &offset) const
 101 {
 102     return groupShape(AVWidget, offset);
 103 }
 104
 105 QPainterPath AbstractGroupItem::transitionGroupShape(const QPointF &offset) const
 106 {
 107     return groupShape(TransitionWidget, offset);
 108 }
 109
 110 QPainterPath AbstractGroupItem::groupShape(GraphicsRectItem type, const QPointF &offset) const
 111 {
 112     QPainterPath path;
 113     QList<QGraphicsItem *> children = childItems();
 114     for (int i = 0; i < children.count(); ++i) {
 115         if (children.at(i)->type() == (int)type) {
 116             QRectF r(children.at(i)->sceneBoundingRect());
 117             r.translate(offset);
 118             path.addRect(r);
 119         } else if (children.at(i)->type() == GroupWidget) {
 120             QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 121             for (int j = 0; j < subchildren.count(); j++) {
 122                 if (subchildren.at(j)->type() == (int)type) {
 123                     QRectF r(subchildren.at(j)->sceneBoundingRect());
 124                     r.translate(offset);
 125                     path.addRect(r);
 126                 }
 127             }
 128         }
 129     }
 130     return path;
 131 }
 132
 133 QPainterPath AbstractGroupItem::spacerGroupShape(GraphicsRectItem type, const QPointF &offset) const
 134 {
 135     QPainterPath path;
 136     QList<QGraphicsItem *> children = childItems();
 137     for (int i = 0; i < children.count(); ++i) {
 138         if (children.at(i)->type() == (int)type) {
 139             QRectF r(children.at(i)->sceneBoundingRect());
 140             r.translate(offset);
 141             r.setRight(scene()->width());
 142             path.addRect(r);
 143         } else if (children.at(i)->type() == GroupWidget) {
 144             QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 145             for (int j = 0; j < subchildren.count(); j++) {
 146                 if (subchildren.at(j)->type() == (int)type) {
 147                     QRectF r(subchildren.at(j)->sceneBoundingRect());
 148                     r.translate(offset);
 149                     r.setRight(scene()->width());
 150                     path.addRect(r);
 151                 }
 152             }
 153         }
 154     }
 155     return path;
 156 }
 157
 158 void AbstractGroupItem::addItem(QGraphicsItem * item)
 159 {
 160     addToGroup(item);
 161     item->setFlag(QGraphicsItem::ItemIsMovable, false);
 162 }
 163
 164 void AbstractGroupItem::removeItem(QGraphicsItem * item)
 165 {
 166     removeFromGroup(item);
 167 }
 168
 169 void AbstractGroupItem::fixItemRect()
 170 {
 171     QPointF start = boundingRect().topLeft();
 172     if (start != QPointF(0, 0)) {
 173         translate(0 - start.x(), 0 - start.y());
 174         setPos(start);
 175     }
 176 }
 177
 178 /*ItemInfo AbstractGroupItem::info() const {
 179     ItemInfo itemInfo;
 180     itemInfo.startPos = m_startPos;
 181     itemInfo.track = m_track;
 182     return itemInfo;
 183 }*/
 184
 185 // virtual
 186 void AbstractGroupItem::paint(QPainter *p, const QStyleOptionGraphicsItem *option, QWidget *)
 187 {
 188     QColor bgcolor(100, 100, 200, 100);
 189     QRectF bound = option->exposedRect.adjusted(0, 0, 1, 1);
 190     p->setClipRect(bound);
 191     p->setBrush(bgcolor);
 192     QPen pen = p->pen();
 193     pen.setColor(QColor(200, 90, 90));
 194     pen.setStyle(Qt::DashLine);
 195     pen.setWidthF(0.0);
 196     p->setPen(pen);
 197     p->drawRoundedRect(boundingRect().adjusted(0, 0, -1, 0), 3, 3);
 198 }
 199
 200 //virtual
 201 QVariant AbstractGroupItem::itemChange(GraphicsItemChange change, const QVariant &value)
 202 {
 203     if (change == QGraphicsItem::ItemSelectedChange) {
 204         if (value.toBool()) setZValue(10);
 205         else setZValue(1);
 206     }
 207     if (change == ItemPositionChange && scene() && parentItem() == 0) {
 208         // calculate new position.
 209         const int trackHeight = KdenliveSettings::trackheight();
 210         QPointF start = sceneBoundingRect().topLeft();
 211         QPointF newPos = value.toPointF();
 212         int xpos = projectScene()->getSnapPointForPos((int)(start.x() + newPos.x() - pos().x()), KdenliveSettings::snaptopoints());
 213
 214         xpos = qMax(xpos, 0);
 215         //kDebug()<<"GRP XPOS:"<<xpos<<", START:"<<start.x()<<",NEW:"<<newPos.x()<<"; SCENE:"<<scenePos().x()<<",POS:"<<pos().x();
 216         newPos.setX((int)(pos().x() + xpos - (int) start.x()));
 217         QStringList lockedTracks = property("locked_tracks").toStringList();
 218         int proposedTrack = (property("y_absolute").toInt() + newPos.y()) / trackHeight;
 219         // Check if top item is a clip or a transition
 220         int offset = 0;
 221         int topTrack = -1;
 222         QList<int> groupTracks;
 223         QList<QGraphicsItem *> children = childItems();
 224         for (int i = 0; i < children.count(); ++i) {
 225             int currentTrack = 0;
 226             if (children.at(i)->type() == AVWidget || children.at(i)->type() == TransitionWidget) {
 227                 currentTrack = static_cast <AbstractClipItem*> (children.at(i))->track();
 228                 if (!groupTracks.contains(currentTrack)) groupTracks.append(currentTrack);
 229             }
 230             else if (children.at(i)->type() == GroupWidget) {
 231                 currentTrack = static_cast <AbstractGroupItem*> (children.at(i))->track();
 232             }
 233             else continue;
 234             if (children.at(i)->type() == AVWidget) {
 235                 if (topTrack == -1 || currentTrack <= topTrack) {
 236                     offset = 0;
 237                     topTrack = currentTrack;
 238                 }
 239             } else if (children.at(i)->type() == TransitionWidget) {
 240                 if (topTrack == -1 || currentTrack < topTrack) {
 241                     offset = (int)(trackHeight / 3 * 2 - 1);
 242                     topTrack = currentTrack;
 243                 }
 244             } else if (children.at(i)->type() == GroupWidget) {
 245                 QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 246                 bool clipGroup = false;
 247                 for (int j = 0; j < subchildren.count(); j++) {
 248                     if (subchildren.at(j)->type() == AVWidget || subchildren.at(j)->type() == TransitionWidget) {
 249                         int subTrack = static_cast <AbstractClipItem*> (subchildren.at(j))->track();
 250                         if (!groupTracks.contains(subTrack)) groupTracks.append(subTrack);
 251                         clipGroup = true;
 252                     }
 253                 }
 254                 if (clipGroup) {
 255                     if (topTrack == -1 || currentTrack <= topTrack) {
 256                         offset = 0;
 257                         topTrack = currentTrack;
 258                     }
 259                 } else {
 260                     if (topTrack == -1 || currentTrack < topTrack) {
 261                         offset = (int)(trackHeight / 3 * 2 - 1);
 262                         topTrack = currentTrack;
 263                     }
 264                 }
 265             }
 266         }
 267         // Check no clip in the group goes outside of existing tracks
 268         int maximumTrack = projectScene()->tracksCount() - 1;
 269         int groupHeight = 0;
 270         for (int i = 0; i < groupTracks.count(); ++i) {
 271             int offset = groupTracks.at(i) - topTrack;
 272             if (offset > groupHeight) groupHeight = offset;
 273         }
 274         maximumTrack -= groupHeight;
 275         proposedTrack = qMin(proposedTrack, maximumTrack);
 276         proposedTrack = qMax(proposedTrack, 0);
 277         int groupOffset = proposedTrack - topTrack;
 278         if (!lockedTracks.isEmpty()) {
 279             for (int i = 0; i < groupTracks.count(); ++i) {
 280                 if (lockedTracks.contains(QString::number(groupTracks.at(i) + groupOffset))) {
 281                     return pos();
 282                 }
 283             }
 284         }
 285         newPos.setY((int)((proposedTrack) * trackHeight) + offset);
 286         //if (newPos == start) return start;
 287
 288         /*if (newPos.x() < 0) {
 289             // If group goes below 0, adjust position to 0
 290             return QPointF(pos().x() - start.x(), pos().y());
 291         }*/
 292
 293         QList<QGraphicsItem*> collidingItems;
 294         QPainterPath shape;
 295         if (projectScene()->editMode() == NORMALEDIT) {
 296             shape = clipGroupShape(newPos - pos());
 297             collidingItems = scene()->items(shape, Qt::IntersectsItemShape);
 298             collidingItems.removeAll(this);
 299             for (int i = 0; i < children.count(); ++i) {
 300                 if (children.at(i)->type() == GroupWidget) {
 301                     QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 302                     for (int j = 0; j < subchildren.count(); j++) {
 303                         collidingItems.removeAll(subchildren.at(j));
 304                     }
 305                 }
 306                 collidingItems.removeAll(children.at(i));
 307             }
 308         }
 309         if (!collidingItems.isEmpty()) {
 310             bool forwardMove = xpos > start.x();
 311             int offset = 0;
 312             for (int i = 0; i < collidingItems.count(); ++i) {
 313                 QGraphicsItem *collision = collidingItems.at(i);
 314                 if (collision->type() == AVWidget) {
 315                     // Collision
 316                     if (newPos.y() != pos().y()) {
 317                         // Track change results in collision, restore original position
 318                         return pos();
 319                     }
 320                     AbstractClipItem *item = static_cast <AbstractClipItem *>(collision);
 321                     if (forwardMove) {
 322                         // Moving forward, determine best pos
 323                         QPainterPath clipPath;
 324                         clipPath.addRect(item->sceneBoundingRect());
 325                         QPainterPath res = shape.intersected(clipPath);
 326                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 327                     } else {
 328                         // Moving backward, determine best pos
 329                         QPainterPath clipPath;
 330                         clipPath.addRect(item->sceneBoundingRect());
 331                         QPainterPath res = shape.intersected(clipPath);
 332                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 333                     }
 334                 }
 335             }
 336             if (offset > 0) {
 337                 if (forwardMove) {
 338                     newPos.setX(newPos.x() - offset);
 339                 } else {
 340                     newPos.setX(newPos.x() + offset);
 341                 }
 342                 // If there is still a collision after our position adjust, restore original pos
 343                 collidingItems = scene()->items(clipGroupShape(newPos - pos()), Qt::IntersectsItemShape);
 344                 collidingItems.removeAll(this);
 345                 for (int i = 0; i < children.count(); ++i) {
 346                     if (children.at(i)->type() == GroupWidget) {
 347                         QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 348                         for (int j = 0; j < subchildren.count(); j++) {
 349                             collidingItems.removeAll(subchildren.at(j));
 350                         }
 351                     }
 352                     collidingItems.removeAll(children.at(i));
 353                 }
 354                 for (int i = 0; i < collidingItems.count(); ++i)
 355                     if (collidingItems.at(i)->type() == AVWidget) return pos();
 356             }
 357         }
 358
 359         if (projectScene()->editMode() == NORMALEDIT) {
 360             shape = transitionGroupShape(newPos - pos());
 361             collidingItems = scene()->items(shape, Qt::IntersectsItemShape);
 362             collidingItems.removeAll(this);
 363             for (int i = 0; i < children.count(); ++i) {
 364                 if (children.at(i)->type() == GroupWidget) {
 365                     QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 366                     for (int j = 0; j < subchildren.count(); j++) {
 367                         collidingItems.removeAll(subchildren.at(j));
 368                     }
 369                 }
 370                 collidingItems.removeAll(children.at(i));
 371             }
 372         }
 373         if (collidingItems.isEmpty()) return newPos;
 374         else {
 375             bool forwardMove = xpos > start.x();
 376             int offset = 0;
 377             for (int i = 0; i < collidingItems.count(); ++i) {
 378                 QGraphicsItem *collision = collidingItems.at(i);
 379                 if (collision->type() == TransitionWidget) {
 380                     // Collision
 381                     if (newPos.y() != pos().y()) {
 382                         // Track change results in collision, restore original position
 383                         return pos();
 384                     }
 385                     AbstractClipItem *item = static_cast <AbstractClipItem *>(collision);
 386                     if (forwardMove) {
 387                         // Moving forward, determine best pos
 388                         QPainterPath clipPath;
 389                         clipPath.addRect(item->sceneBoundingRect());
 390                         QPainterPath res = shape.intersected(clipPath);
 391                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 392                     } else {
 393                         // Moving backward, determine best pos
 394                         QPainterPath clipPath;
 395                         clipPath.addRect(item->sceneBoundingRect());
 396                         QPainterPath res = shape.intersected(clipPath);
 397                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 398                     }
 399                 }
 400             }
 401             if (offset > 0) {
 402                 if (forwardMove) {
 403                     newPos.setX(newPos.x() - offset);
 404                 } else {
 405                     newPos.setX(newPos.x() + offset);
 406                 }
 407                 // If there is still a collision after our position adjust, restore original pos
 408                 collidingItems = scene()->items(transitionGroupShape(newPos - pos()), Qt::IntersectsItemShape);
 409                 for (int i = 0; i < children.count(); ++i) {
 410                     collidingItems.removeAll(children.at(i));
 411                 }
 412                 for (int i = 0; i < collidingItems.count(); ++i)
 413                     if (collidingItems.at(i)->type() == TransitionWidget) return pos();
 414             }
 415         }
 416         return newPos;
 417     }
 418     return QGraphicsItemGroup::itemChange(change, value);
 419 }
 420
 421 //virtual
 422 void AbstractGroupItem::dropEvent(QGraphicsSceneDragDropEvent * event)
 423 {
 424     QString effects = QString::fromUtf8(event->mimeData()->data("kdenlive/effectslist"));
 425     QDomDocument doc;
 426     doc.setContent(effects, true);
 427     QDomElement e = doc.documentElement();
 428     e.setAttribute("kdenlive_ix", 0);
 429     CustomTrackView *view = (CustomTrackView *) scene()->views()[0];
 430     QPointF dropPos = event->scenePos();
 431     QList<QGraphicsItem *> selection = scene()->items(dropPos);
 432     AbstractClipItem *dropChild = NULL;
 433     for (int i = 0; i < selection.count(); ++i) {
 434         if (selection.at(i)->type() == AVWidget) {
 435             dropChild = (AbstractClipItem *) selection.at(i);
 436             break;
 437         }
 438     }
 439     if (view) view->slotAddGroupEffect(e, this, dropChild);
 440 }
 441
 442 //virtual
 443 void AbstractGroupItem::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
 444 {
 445     event->setAccepted(event->mimeData()->hasFormat("kdenlive/effectslist"));
 446 }
 447
 448 void AbstractGroupItem::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
 449 {
 450     Q_UNUSED(event)
 451 }
 452
 453 // virtual
 454 void AbstractGroupItem::mousePressEvent(QGraphicsSceneMouseEvent * event)
 455 {
 456     if (event->modifiers() & Qt::ShiftModifier) {
 457         // User want to do a rectangle selection, so ignore the event to pass it to the view
 458         event->ignore();
 459     } else {
 460         QList <QGraphicsItem *>list = scene()->items(event->scenePos());
 461         // only allow group move if we click over an item in the group
 462         foreach(const QGraphicsItem *item, list) {
 463             if (item->type() == TransitionWidget || item->type() == AVWidget) {
 464                 QGraphicsItem::mousePressEvent(event);
 465                 return;
 466             }
 467         }
 468         event->ignore();
 469     }
 470 }
 471
 472 void AbstractGroupItem::resizeStart(int diff)
 473 {
 474     bool info = false;
 475     if (m_resizeInfos.isEmpty())
 476         info = true;
 477     int maximum = diff;
 478     QList <QGraphicsItem *> children = childItems();
 479     QList <AbstractClipItem *> items;
 480     int itemcount = 0;
 481     for (int i = 0; i < children.count(); ++i) {
 482         AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
 483         if (item && item->type() == AVWidget) {
 484             items << item;
 485             if (info)
 486                 m_resizeInfos << item->info();
 487             item->resizeStart((int)(m_resizeInfos.at(itemcount).startPos.frames(item->fps())) + diff);
 488             int itemdiff = (int)(item->startPos() - m_resizeInfos.at(itemcount).startPos).frames(item->fps());
 489             if (qAbs(itemdiff) < qAbs(maximum))
 490                 maximum = itemdiff;
 491             ++itemcount;
 492         }
 493     }
 494
 495     for (int i = 0; i < items.count(); ++i)
 496         items.at(i)->resizeStart((int)(m_resizeInfos.at(i).startPos.frames(items.at(i)->fps())) + maximum);
 497 }
 498
 499 void AbstractGroupItem::resizeEnd(int diff)
 500 {
 501     bool info = false;
 502     if (m_resizeInfos.isEmpty())
 503         info = true;
 504     int maximum = diff;
 505     QList <QGraphicsItem *> children = childItems();
 506     QList <AbstractClipItem *> items;
 507     int itemcount = 0;
 508     for (int i = 0; i < children.count(); ++i) {
 509         AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
 510         if (item && item->type() == AVWidget) {
 511             items << item;
 512             if (info)
 513                 m_resizeInfos << item->info();
 514             item->resizeEnd((int)(m_resizeInfos.at(itemcount).endPos.frames(item->fps())) + diff);
 515             int itemdiff = (int)(item->endPos() - m_resizeInfos.at(itemcount).endPos).frames(item->fps());
 516             if (qAbs(itemdiff) < qAbs(maximum))
 517                 maximum = itemdiff;
 518             ++itemcount;
 519         }
 520     }
 521
 522     for (int i = 0; i < items.count(); ++i)
 523         items.at(i)->resizeEnd((int)(m_resizeInfos.at(i).endPos.frames(items.at(i)->fps())) + maximum);
 524 }
 525
 526 QList< ItemInfo > AbstractGroupItem::resizeInfos()
 527 {
 528     return m_resizeInfos;
 529 }
 530
 531 void AbstractGroupItem::clearResizeInfos()
 532 {
 533     // m_resizeInfos.clear() will crash in some cases for unknown reasons - ttill
 534     m_resizeInfos = QList <ItemInfo>();
 535 }
 536
 537 GenTime AbstractGroupItem::duration()
 538 {
 539     QList <QGraphicsItem *> children = childItems();
 540     GenTime start = GenTime(-1.0);
 541     GenTime end = GenTime();
 542     for (int i = 0; i < children.count(); ++i) {
 543         if (children.at(i)->type() != GroupWidget) {
 544             AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
 545             if (item) {
 546                 if (start < GenTime() || item->startPos() < start)
 547                     start = item->startPos();
 548                 if (item->endPos() > end)
 549                     end = item->endPos();
 550             }
 551         } else {
 552             children << children.at(i)->childItems();
 553         }
 554     }
 555     return end - start;
 556 }
 557
 558 #include "abstractgroupitem.moc"