1 /***************************************************************************
2 * Copyright (C) 2008 by Marco Gittler (g.marco@freenet.de) *
3 * Copyright (C) 2008 by Jean-Baptiste Mardelle (jb@kdenlive.org) *
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. *
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. *
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 ***************************************************************************/
21 #include "abstractgroupitem.h"
22 #include "abstractclipitem.h"
23 #include "kdenlivesettings.h"
24 #include "customtrackscene.h"
25 #include "customtrackview.h"
30 #include <QStyleOptionGraphicsItem>
31 #include <QDomDocument>
33 #include <QGraphicsSceneMouseEvent>
35 AbstractGroupItem::AbstractGroupItem(double /* fps */) :
40 setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
44 int AbstractGroupItem::type() const
49 int AbstractGroupItem::track() const
51 return (int)(scenePos().y() / KdenliveSettings::trackheight());
54 CustomTrackScene* AbstractGroupItem::projectScene()
56 if (scene()) return static_cast <CustomTrackScene*>(scene());
60 QPainterPath AbstractGroupItem::groupShape(QPointF offset)
63 QList<QGraphicsItem *> children = childItems();
64 for (int i = 0; i < children.count(); i++) {
65 if (children.at(i)->type() == AVWIDGET) {
66 QRectF r(children.at(i)->sceneBoundingRect());
74 void AbstractGroupItem::addItem(QGraphicsItem * item)
80 void AbstractGroupItem::fixItemRect()
82 QPointF start = boundingRect().topLeft();
83 if (start != QPointF(0, 0)) {
84 translate(0 - start.x(), 0 - start.y());
89 /*ItemInfo AbstractGroupItem::info() const {
91 itemInfo.startPos = m_startPos;
92 itemInfo.track = m_track;
97 void AbstractGroupItem::paint(QPainter *p, const QStyleOptionGraphicsItem *option, QWidget *)
99 const double scale = option->matrix.m11();
100 QColor bgcolor(100, 100, 200, 100);
101 p->fillRect(option->exposedRect, bgcolor);
102 p->setClipping(false);
104 pen.setColor(QColor(200, 90, 90));
105 pen.setStyle(Qt::DashLine);
107 //pen.setCosmetic(true);
109 p->drawRect(boundingRect().adjusted(0, 0, - 1 / scale, 0));
113 QVariant AbstractGroupItem::itemChange(GraphicsItemChange change, const QVariant &value)
115 if (change == ItemPositionChange && scene()) {
116 // calculate new position.
117 const int trackHeight = KdenliveSettings::trackheight();
118 QPointF start = sceneBoundingRect().topLeft();
119 QPointF newPos = value.toPointF();
120 //kDebug()<<"REAL:"<<start.x()<<", PROPOSED:"<<(int)(start.x() - pos().x() + newPos.x());
121 int xpos = projectScene()->getSnapPointForPos((int)(start.x() + newPos.x() - pos().x()), KdenliveSettings::snaptopoints());
123 xpos = qMax(xpos, 0);
124 //kDebug()<<"GRP XPOS:"<<xpos<<", START:"<<start.x()<<",NEW:"<<newPos.x()<<"; SCENE:"<<scenePos().x()<<",POS:"<<pos().x();
125 newPos.setX((int)(pos().x() + xpos - (int) start.x()));
127 //int startTrack = (start.y() + trackHeight / 2) / trackHeight;
129 int realTrack = (start.y() + newPos.y() - pos().y()) / trackHeight;
130 int proposedTrack = newPos.y() / trackHeight;
132 int correctedTrack = qMin(realTrack, projectScene()->tracksCount() - (int)(boundingRect().height() + 5) / trackHeight);
133 correctedTrack = qMax(correctedTrack, 0);
135 proposedTrack += (correctedTrack - realTrack);
137 // Check if top item is a clip or a transition
140 QList<QGraphicsItem *> children = childItems();
141 for (int i = 0; i < children.count(); i++) {
142 int currentTrack = (int)(children.at(i)->scenePos().y() / trackHeight);
143 if (children.at(i)->type() == AVWIDGET) {
144 if (topTrack == -1 || currentTrack <= topTrack) {
146 topTrack = currentTrack;
148 } else if (children.at(i)->type() == TRANSITIONWIDGET) {
149 if (topTrack == -1 || currentTrack < topTrack) {
150 offset = (int)(trackHeight / 3 * 2 - 1);
151 topTrack = currentTrack;
155 newPos.setY((int)((proposedTrack) * trackHeight) + offset);
156 //if (newPos == start) return start;
158 /*if (newPos.x() < 0) {
159 // If group goes below 0, adjust position to 0
160 return QPointF(pos().x() - start.x(), pos().y());
162 QPainterPath shape = groupShape(newPos - pos());
163 QList<QGraphicsItem*> collindingItems = scene()->items(shape, Qt::IntersectsItemShape);
164 for (int i = 0; i < children.count(); i++) {
165 collindingItems.removeAll(children.at(i));
168 if (collindingItems.isEmpty()) return newPos;
170 bool forwardMove = xpos > start.x();
172 for (int i = 0; i < collindingItems.count(); i++) {
173 QGraphicsItem *collision = collindingItems.at(i);
174 if (collision->type() == AVWIDGET) {
176 //kDebug()<<"// COLLISION WIT:"<<collision->sceneBoundingRect();
177 if (newPos.y() != pos().y()) {
178 // Track change results in collision, restore original position
181 AbstractClipItem *item = static_cast <AbstractClipItem *>(collision);
183 // Moving forward, determine best pos
184 QPainterPath clipPath;
185 clipPath.addRect(item->sceneBoundingRect());
186 QPainterPath res = shape.intersected(clipPath);
187 offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
189 // Moving backward, determine best pos
190 QPainterPath clipPath;
191 clipPath.addRect(item->sceneBoundingRect());
192 QPainterPath res = shape.intersected(clipPath);
193 offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
199 newPos.setX(newPos.x() - offset);
201 newPos.setX(newPos.x() + offset);
203 // If there is still a collision after our position adjust, restore original pos
204 collindingItems = scene()->items(groupShape(newPos - pos()), Qt::IntersectsItemShape);
205 for (int i = 0; i < children.count(); i++) {
206 collindingItems.removeAll(children.at(i));
208 for (int i = 0; i < collindingItems.count(); i++)
209 if (collindingItems.at(i)->type() == AVWIDGET) return pos();
214 return QGraphicsItemGroup::itemChange(change, value);
218 void AbstractGroupItem::dropEvent(QGraphicsSceneDragDropEvent * event)
220 QString effects = QString(event->mimeData()->data("kdenlive/effectslist"));
222 doc.setContent(effects, true);
223 QDomElement e = doc.documentElement();
224 CustomTrackView *view = (CustomTrackView *) scene()->views()[0];
225 if (view) view->slotAddGroupEffect(e, this);
229 void AbstractGroupItem::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
231 event->setAccepted(event->mimeData()->hasFormat("kdenlive/effectslist"));
234 void AbstractGroupItem::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
240 void AbstractGroupItem::mousePressEvent(QGraphicsSceneMouseEvent * event)
242 if (event->modifiers() & Qt::ShiftModifier) {
243 // User want to do a rectangle selection, so ignore the event to pass it to the view
245 } else QGraphicsItem::mousePressEvent(event);