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 AbstractGroupItem::AbstractGroupItem(double /* fps */) :
  36         QObject(),
  37         QGraphicsItemGroup()
  38 {
  39     setZValue(1);
  40     setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
  41 #if QT_VERSION >= 0x040600
  42     setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
  43 #endif
  44     setAcceptDrops(true);
  45     m_resizeInfos = QList <ItemInfo>();
  46 }
  47
  48 int AbstractGroupItem::type() const
  49 {
  50     return GROUPWIDGET;
  51 }
  52
  53 int AbstractGroupItem::track() const
  54 {
  55     return (int)(scenePos().y() / KdenliveSettings::trackheight());
  56 }
  57
  58 void AbstractGroupItem::setItemLocked(bool locked)
  59 {
  60     if (locked)
  61         setSelected(false);
  62
  63     setFlag(QGraphicsItem::ItemIsMovable, !locked);
  64     setFlag(QGraphicsItem::ItemIsSelectable, !locked);
  65
  66     foreach (QGraphicsItem *child, childItems())
  67         ((AbstractClipItem *)child)->setItemLocked(locked);
  68 }
  69
  70 bool AbstractGroupItem::isItemLocked() const
  71 {
  72     return !(flags() & (QGraphicsItem::ItemIsSelectable));
  73 }
  74
  75 CustomTrackScene* AbstractGroupItem::projectScene()
  76 {
  77     if (scene()) return static_cast <CustomTrackScene*>(scene());
  78     return NULL;
  79 }
  80
  81 QPainterPath AbstractGroupItem::clipGroupShape(QPointF offset) const
  82 {
  83     return groupShape(AVWIDGET, offset);
  84 }
  85
  86 QPainterPath AbstractGroupItem::transitionGroupShape(QPointF offset) const
  87 {
  88     return groupShape(TRANSITIONWIDGET, offset);
  89 }
  90
  91 QPainterPath AbstractGroupItem::groupShape(GRAPHICSRECTITEM type, QPointF offset) const
  92 {
  93     QPainterPath path;
  94     QList<QGraphicsItem *> children = childItems();
  95     for (int i = 0; i < children.count(); i++) {
  96         if (children.at(i)->type() == (int)type) {
  97             QRectF r(children.at(i)->sceneBoundingRect());
  98             r.translate(offset);
  99             path.addRect(r);
 100         } else if (children.at(i)->type() == GROUPWIDGET) {
 101             QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 102             for (int j = 0; j < subchildren.count(); j++) {
 103                 if (subchildren.at(j)->type() == (int)type) {
 104                     QRectF r(subchildren.at(j)->sceneBoundingRect());
 105                     r.translate(offset);
 106                     path.addRect(r);
 107                 }
 108             }
 109         }
 110     }
 111     return path;
 112 }
 113
 114 void AbstractGroupItem::addItem(QGraphicsItem * item)
 115 {
 116     addToGroup(item);
 117     //fixItemRect();
 118 }
 119
 120 void AbstractGroupItem::fixItemRect()
 121 {
 122     QPointF start = boundingRect().topLeft();
 123     if (start != QPointF(0, 0)) {
 124         translate(0 - start.x(), 0 - start.y());
 125         setPos(start);
 126     }
 127 }
 128
 129 /*ItemInfo AbstractGroupItem::info() const {
 130     ItemInfo itemInfo;
 131     itemInfo.startPos = m_startPos;
 132     itemInfo.track = m_track;
 133     return itemInfo;
 134 }*/
 135
 136 // virtual
 137 void AbstractGroupItem::paint(QPainter *p, const QStyleOptionGraphicsItem *option, QWidget *)
 138 {
 139     QColor bgcolor(100, 100, 200, 100);
 140     QRectF bound = option->exposedRect.adjusted(0, 0, 1, 1);
 141     p->setClipRect(bound);
 142     const QRectF mapped = p->worldTransform().mapRect(option->exposedRect);
 143     p->setWorldMatrixEnabled(false);
 144     p->setBrush(bgcolor);
 145     QPen pen = p->pen();
 146     pen.setColor(QColor(200, 90, 90));
 147     pen.setStyle(Qt::DashLine);
 148     pen.setWidthF(0.0);
 149     p->setPen(pen);
 150     p->drawRoundedRect(mapped, 3, 3);
 151 }
 152
 153 //virtual
 154 QVariant AbstractGroupItem::itemChange(GraphicsItemChange change, const QVariant &value)
 155 {
 156     if (change == QGraphicsItem::ItemSelectedChange) {
 157         if (value.toBool()) setZValue(10);
 158         else setZValue(1);
 159     }
 160     if (change == ItemPositionChange && scene() && parentItem() == 0) {
 161         // calculate new position.
 162         const int trackHeight = KdenliveSettings::trackheight();
 163         QPointF start = sceneBoundingRect().topLeft();
 164         QPointF newPos = value.toPointF();
 165         int xpos = projectScene()->getSnapPointForPos((int)(start.x() + newPos.x() - pos().x()), KdenliveSettings::snaptopoints());
 166
 167         xpos = qMax(xpos, 0);
 168         //kDebug()<<"GRP XPOS:"<<xpos<<", START:"<<start.x()<<",NEW:"<<newPos.x()<<"; SCENE:"<<scenePos().x()<<",POS:"<<pos().x();
 169         newPos.setX((int)(pos().x() + xpos - (int) start.x()));
 170
 171         //int startTrack = (start.y() + trackHeight / 2) / trackHeight;
 172
 173         int realTrack = (start.y() + newPos.y() - pos().y()) / trackHeight;
 174         int proposedTrack = newPos.y() / trackHeight;
 175
 176         int correctedTrack = qMin(realTrack, projectScene()->tracksCount() - (int)(boundingRect().height() + 5) / trackHeight);
 177         correctedTrack = qMax(correctedTrack, 0);
 178
 179         proposedTrack += (correctedTrack - realTrack);
 180
 181         // Check if top item is a clip or a transition
 182         int offset = 0;
 183         int topTrack = -1;
 184         QList<QGraphicsItem *> children = childItems();
 185         for (int i = 0; i < children.count(); i++) {
 186             int currentTrack = (int)(children.at(i)->scenePos().y() / trackHeight);
 187             if (children.at(i)->type() == AVWIDGET) {
 188                 if (topTrack == -1 || currentTrack <= topTrack) {
 189                     offset = 0;
 190                     topTrack = currentTrack;
 191                 }
 192             } else if (children.at(i)->type() == TRANSITIONWIDGET) {
 193                 if (topTrack == -1 || currentTrack < topTrack) {
 194                     offset = (int)(trackHeight / 3 * 2 - 1);
 195                     topTrack = currentTrack;
 196                 }
 197             } else if (children.at(i)->type() == GROUPWIDGET) {
 198                 QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 199                 bool clipGroup = false;
 200                 for (int j = 0; j < subchildren.count(); j++) {
 201                     if (subchildren.at(j)->type() == AVWIDGET) {
 202                         clipGroup = true;
 203                         break;
 204                     }
 205                 }
 206                 if (clipGroup) {
 207                     if (topTrack == -1 || currentTrack <= topTrack) {
 208                         offset = 0;
 209                         topTrack = currentTrack;
 210                     }
 211                 } else {
 212                     if (topTrack == -1 || currentTrack < topTrack) {
 213                         offset = (int)(trackHeight / 3 * 2 - 1);
 214                         topTrack = currentTrack;
 215                     }
 216                 }
 217             }
 218         }
 219         newPos.setY((int)((proposedTrack) * trackHeight) + offset);
 220         //if (newPos == start) return start;
 221
 222         /*if (newPos.x() < 0) {
 223             // If group goes below 0, adjust position to 0
 224             return QPointF(pos().x() - start.x(), pos().y());
 225         }*/
 226
 227         QList<QGraphicsItem*> collidingItems;
 228         QPainterPath shape;
 229         if (projectScene()->editMode() == NORMALEDIT) {
 230             shape = clipGroupShape(newPos - pos());
 231             collidingItems = scene()->items(shape, Qt::IntersectsItemShape);
 232             collidingItems.removeAll(this);
 233             for (int i = 0; i < children.count(); i++) {
 234                 if (children.at(i)->type() == GROUPWIDGET) {
 235                     QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 236                     for (int j = 0; j < subchildren.count(); j++) {
 237                         collidingItems.removeAll(subchildren.at(j));
 238                     }
 239                 }
 240                 collidingItems.removeAll(children.at(i));
 241             }
 242         }
 243         if (!collidingItems.isEmpty()) {
 244             bool forwardMove = xpos > start.x();
 245             int offset = 0;
 246             for (int i = 0; i < collidingItems.count(); i++) {
 247                 QGraphicsItem *collision = collidingItems.at(i);
 248                 if (collision->type() == AVWIDGET) {
 249                     // Collision
 250                     if (newPos.y() != pos().y()) {
 251                         // Track change results in collision, restore original position
 252                         return pos();
 253                     }
 254                     AbstractClipItem *item = static_cast <AbstractClipItem *>(collision);
 255                     if (forwardMove) {
 256                         // Moving forward, determine best pos
 257                         QPainterPath clipPath;
 258                         clipPath.addRect(item->sceneBoundingRect());
 259                         QPainterPath res = shape.intersected(clipPath);
 260                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 261                     } else {
 262                         // Moving backward, determine best pos
 263                         QPainterPath clipPath;
 264                         clipPath.addRect(item->sceneBoundingRect());
 265                         QPainterPath res = shape.intersected(clipPath);
 266                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 267                     }
 268                 }
 269             }
 270             if (offset > 0) {
 271                 if (forwardMove) {
 272                     newPos.setX(newPos.x() - offset);
 273                 } else {
 274                     newPos.setX(newPos.x() + offset);
 275                 }
 276                 // If there is still a collision after our position adjust, restore original pos
 277                 collidingItems = scene()->items(clipGroupShape(newPos - pos()), Qt::IntersectsItemShape);
 278                 collidingItems.removeAll(this);
 279                 for (int i = 0; i < children.count(); i++) {
 280                     if (children.at(i)->type() == GROUPWIDGET) {
 281                         QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 282                         for (int j = 0; j < subchildren.count(); j++) {
 283                             collidingItems.removeAll(subchildren.at(j));
 284                         }
 285                     }
 286                     collidingItems.removeAll(children.at(i));
 287                 }
 288                 for (int i = 0; i < collidingItems.count(); i++)
 289                     if (collidingItems.at(i)->type() == AVWIDGET) return pos();
 290             }
 291         }
 292
 293         if (projectScene()->editMode() == NORMALEDIT) {
 294             shape = transitionGroupShape(newPos - pos());
 295             collidingItems = scene()->items(shape, Qt::IntersectsItemShape);
 296             collidingItems.removeAll(this);
 297             for (int i = 0; i < children.count(); i++) {
 298                 if (children.at(i)->type() == GROUPWIDGET) {
 299                     QList<QGraphicsItem *> subchildren = children.at(i)->childItems();
 300                     for (int j = 0; j < subchildren.count(); j++) {
 301                         collidingItems.removeAll(subchildren.at(j));
 302                     }
 303                 }
 304                 collidingItems.removeAll(children.at(i));
 305             }
 306         }
 307         if (collidingItems.isEmpty()) return newPos;
 308         else {
 309             bool forwardMove = xpos > start.x();
 310             int offset = 0;
 311             for (int i = 0; i < collidingItems.count(); i++) {
 312                 QGraphicsItem *collision = collidingItems.at(i);
 313                 if (collision->type() == TRANSITIONWIDGET) {
 314                     // Collision
 315                     if (newPos.y() != pos().y()) {
 316                         // Track change results in collision, restore original position
 317                         return pos();
 318                     }
 319                     AbstractClipItem *item = static_cast <AbstractClipItem *>(collision);
 320                     if (forwardMove) {
 321                         // Moving forward, determine best pos
 322                         QPainterPath clipPath;
 323                         clipPath.addRect(item->sceneBoundingRect());
 324                         QPainterPath res = shape.intersected(clipPath);
 325                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 326                     } else {
 327                         // Moving backward, determine best pos
 328                         QPainterPath clipPath;
 329                         clipPath.addRect(item->sceneBoundingRect());
 330                         QPainterPath res = shape.intersected(clipPath);
 331                         offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
 332                     }
 333                 }
 334             }
 335             if (offset > 0) {
 336                 if (forwardMove) {
 337                     newPos.setX(newPos.x() - offset);
 338                 } else {
 339                     newPos.setX(newPos.x() + offset);
 340                 }
 341                 // If there is still a collision after our position adjust, restore original pos
 342                 collidingItems = scene()->items(transitionGroupShape(newPos - pos()), Qt::IntersectsItemShape);
 343                 for (int i = 0; i < children.count(); i++) {
 344                     collidingItems.removeAll(children.at(i));
 345                 }
 346                 for (int i = 0; i < collidingItems.count(); i++)
 347                     if (collidingItems.at(i)->type() == TRANSITIONWIDGET) return pos();
 348             }
 349         }
 350         return newPos;
 351     }
 352     return QGraphicsItemGroup::itemChange(change, value);
 353 }
 354
 355 //virtual
 356 void AbstractGroupItem::dropEvent(QGraphicsSceneDragDropEvent * event)
 357 {
 358     QString effects = QString::fromUtf8(event->mimeData()->data("kdenlive/effectslist"));
 359     QDomDocument doc;
 360     doc.setContent(effects, true);
 361     QDomElement e = doc.documentElement();
 362     e.setAttribute("kdenlive_ix", 0);
 363     CustomTrackView *view = (CustomTrackView *) scene()->views()[0];
 364     QPointF dropPos = event->scenePos();
 365     QList<QGraphicsItem *> selection = scene()->items(dropPos);
 366     AbstractClipItem *dropChild = NULL;
 367     for (int i = 0; i < selection.count(); i++) {
 368         if (selection.at(i)->type() == AVWIDGET) {
 369             dropChild = (AbstractClipItem *) selection.at(i);
 370             break;
 371         }
 372     }
 373     if (view) view->slotAddGroupEffect(e, this, dropChild);
 374 }
 375
 376 //virtual
 377 void AbstractGroupItem::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
 378 {
 379     event->setAccepted(event->mimeData()->hasFormat("kdenlive/effectslist"));
 380 }
 381
 382 void AbstractGroupItem::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
 383 {
 384     Q_UNUSED(event)
 385 }
 386
 387 // virtual
 388 void AbstractGroupItem::mousePressEvent(QGraphicsSceneMouseEvent * event)
 389 {
 390     if (event->modifiers() & Qt::ShiftModifier) {
 391         // User want to do a rectangle selection, so ignore the event to pass it to the view
 392         event->ignore();
 393     } else QGraphicsItem::mousePressEvent(event);
 394 }
 395
 396 void AbstractGroupItem::resizeStart(int diff)
 397 {
 398     bool info = false;
 399     if (m_resizeInfos.isEmpty())
 400         info = true;
 401     int maximum = diff;
 402     QList <QGraphicsItem *> children = childItems();
 403     QList <AbstractClipItem *> items;
 404     int itemcount = 0;
 405     for (int i = 0; i < children.count(); ++i) {
 406         AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
 407         if (item && item->type() == AVWIDGET) {
 408             items << item;
 409             if (info)
 410                 m_resizeInfos << item->info();
 411             item->resizeStart((int)(m_resizeInfos.at(itemcount).startPos.frames(item->fps())) + diff);
 412             int itemdiff = (int)(item->startPos() - m_resizeInfos.at(itemcount).startPos).frames(item->fps());
 413             if (qAbs(itemdiff) < qAbs(maximum))
 414                 maximum = itemdiff;
 415             ++itemcount;
 416         }
 417     }
 418
 419     for (int i = 0; i < items.count(); ++i)
 420         items.at(i)->resizeStart((int)(m_resizeInfos.at(i).startPos.frames(items.at(i)->fps())) + maximum);
 421 }
 422
 423 void AbstractGroupItem::resizeEnd(int diff)
 424 {
 425     bool info = false;
 426     if (m_resizeInfos.isEmpty())
 427         info = true;
 428     int maximum = diff;
 429     QList <QGraphicsItem *> children = childItems();
 430     QList <AbstractClipItem *> items;
 431     int itemcount = 0;
 432     for (int i = 0; i < children.count(); ++i) {
 433         AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
 434         if (item && item->type() == AVWIDGET) {
 435             items << item;
 436             if (info)
 437                 m_resizeInfos << item->info();
 438             item->resizeEnd((int)(m_resizeInfos.at(itemcount).endPos.frames(item->fps())) + diff);
 439             int itemdiff = (int)(item->endPos() - m_resizeInfos.at(itemcount).endPos).frames(item->fps());
 440             if (qAbs(itemdiff) < qAbs(maximum))
 441                 maximum = itemdiff;
 442             ++itemcount;
 443         }
 444     }
 445
 446     for (int i = 0; i < items.count(); ++i)
 447         items.at(i)->resizeEnd((int)(m_resizeInfos.at(i).endPos.frames(items.at(i)->fps())) + maximum);
 448 }
 449
 450 QList< ItemInfo > AbstractGroupItem::resizeInfos()
 451 {
 452     return m_resizeInfos;
 453 }
 454
 455 void AbstractGroupItem::clearResizeInfos()
 456 {
 457     // m_resizeInfos.clear() will crash in some cases for unknown reasons - ttill
 458     m_resizeInfos = QList <ItemInfo>();
 459 }
 460
 461 GenTime AbstractGroupItem::duration()
 462 {
 463     QList <QGraphicsItem *> children = childItems();
 464     GenTime start = GenTime(-1.0);
 465     GenTime end = GenTime();
 466     for (int i = 0; i < children.count(); ++i) {
 467         if (children.at(i)->type() != GROUPWIDGET) {
 468             AbstractClipItem *item = static_cast <AbstractClipItem *>(children.at(i));
 469             if (item) {
 470                 if (start < GenTime() || item->startPos() < start)
 471                     start = item->startPos();
 472                 if (item->endPos() > end)
 473                     end = item->endPos();
 474             }
 475         } else {
 476             children << children.at(i)->childItems();
 477         }
 478     }
 479     return end - start;
 480 }