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 <QGraphicsScene>
22 #include <QGraphicsView>
29 #include "abstractgroupitem.h"
30 #include "abstractclipitem.h"
31 #include "kdenlivesettings.h"
32 #include "customtrackscene.h"
34 AbstractGroupItem::AbstractGroupItem(double fps): QGraphicsItemGroup(), m_fps(fps) {
36 setFlags(QGraphicsItem::ItemClipsToShape | QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
39 int AbstractGroupItem::type() const {
43 const int AbstractGroupItem::track() const {
44 return (int)(scenePos().y() / KdenliveSettings::trackheight());
47 CustomTrackScene* AbstractGroupItem::projectScene() {
48 if (scene()) return static_cast <CustomTrackScene*>(scene());
53 QPolygonF AbstractGroupItem::groupShape(QPointF offset) {
54 QList<QGraphicsItem *> children = childItems();
56 for (int i = 0; i < children.count(); i++) {
57 if (children.at(i)->type() == AVWIDGET) {
58 QPolygonF r = QPolygonF(children.at(i)->sceneBoundingRect());
59 path = path.united(r);
62 path.translate(offset);
66 void AbstractGroupItem::addItem(QGraphicsItem * item) {
71 void AbstractGroupItem::fixItemRect() {
72 QPointF start = boundingRect().topLeft();
73 if (start != QPointF(0, 0)) {
74 translate(0 - start.x(), 0 - start.y());
80 void AbstractGroupItem::paint(QPainter *p, const QStyleOptionGraphicsItem *, QWidget *) {
81 p->fillRect(boundingRect(), QColor(200, 100, 100, 100));
85 QVariant AbstractGroupItem::itemChange(GraphicsItemChange change, const QVariant &value) {
86 if (change == ItemPositionChange && scene()) {
87 // calculate new position.
88 const int trackHeight = KdenliveSettings::trackheight();
89 QPointF newPos = value.toPointF();
90 int xpos = projectScene()->getSnapPointForPos((int) newPos.x(), KdenliveSettings::snaptopoints());
95 //kDebug()<<"// GRP MOVE: "<<pos().y()<<"->"<<newPos.y();
96 QPointF start = pos();//sceneBoundingRect().topLeft();
97 int posx = start.x() + newPos.x(); //projectScene()->getSnapPointForPos(start.x() + sc.x(), KdenliveSettings::snaptopoints());
99 int startTrack = (start.y() + trackHeight / 2) / trackHeight;
100 int newTrack = (newPos.y()) / trackHeight;
101 //kDebug()<<"// GROUP NEW T:"<<newTrack<<",START T:"<<startTrack<<",MAX:"<<projectScene()->tracksCount() - 1;
102 newTrack = qMin(newTrack, projectScene()->tracksCount() - (int)(boundingRect().height() + 5) / trackHeight);
103 newTrack = qMax(newTrack, 0);
105 // Check if top item is a clip or a transition
108 QList<QGraphicsItem *> children = childItems();
109 for (int i = 0; i < children.count(); i++) {
110 int currentTrack = (int)(children.at(i)->scenePos().y() / trackHeight);
111 if (children.at(i)->type() == AVWIDGET) {
112 if (topTrack == -1 || currentTrack <= topTrack) {
114 topTrack = currentTrack;
116 } else if (children.at(i)->type() == TRANSITIONWIDGET) {
117 if (topTrack == -1 || currentTrack < topTrack) {
118 offset = (int)(trackHeight / 3 * 2 - 1);
119 topTrack = currentTrack;
124 newPos.setY((int)((newTrack) * trackHeight) + offset);
126 //kDebug() << "------------------------------------GRUOP MOVE";
128 if (start.x() + newPos.x() - pos().x() < 0) {
129 // If group goes below 0, adjust position to 0
130 return QPointF(pos().x() - start.x(), pos().y());
133 QPolygonF sceneShape = groupShape(newPos - pos());
134 QList<QGraphicsItem*> collindingItems = scene()->items(sceneShape, Qt::IntersectsItemShape);
135 for (int i = 0; i < children.count(); i++) {
136 collindingItems.removeAll(children.at(i));
138 if (collindingItems.isEmpty()) return newPos;
140 for (int i = 0; i < collindingItems.count(); i++) {
141 QGraphicsItem *collision = collindingItems.at(i);
142 if (collision->type() == AVWIDGET) {
145 //TODO: improve movement when collision happens
146 /*if (startTrack != newTrack) return pos();
147 if (collision->pos().x() > pos().x()) {
148 return QPointF(collision->sceneBoundingRect().x() - sceneBoundingRect().width() + pos().x() - start.x() - 1, newPos.y());
155 //else posx -= startx;
156 //posx = qMax(posx, 0);
158 //kDebug()<<"Y POS: "<<start.y() + newPos.y()<<"SCN MP: "<<sc;
159 /*int newTrack = (start.y() + newPos.y()) / KdenliveSettings::trackheight();
160 int oldTrack = (start.y() + pos().y()) / KdenliveSettings::trackheight();
161 newPos.setY((newTrack) * KdenliveSettings::trackheight() - start.y() + 1);*/
164 //if (start.y() + newPos.y() < 1) newTrack = oldTrack;
168 // Only one clip is moving
170 QList<QGraphicsItem*> items = scene()->items(sceneShape, Qt::IntersectsItemShape);
173 if (!items.isEmpty()) {
174 for (int i = 0; i < items.count(); i++) {
175 if (items.at(i)->type() == AVWIDGET) {
177 //kDebug()<<"/// COLLISION WITH ITEM: "<<items.at(i)->sceneBoundingRect();
179 QPointF otherPos = items.at(i)->pos();
180 if ((int) otherPos.y() != (int) pos().y()) return pos();
181 if (pos().x() < otherPos.x()) {
182 // move clip just before colliding clip
183 int npos = (static_cast < AbstractClipItem* >(items.at(i))->startPos()).frames(m_fps) - sceneBoundingRect().width();
186 // get pos just after colliding clip
187 int npos = static_cast < AbstractClipItem* >(items.at(i))->endPos().frames(m_fps);
196 return QGraphicsItem::itemChange(change, value);