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"
29 #include <QStyleOptionGraphicsItem>
32 AbstractGroupItem::AbstractGroupItem(double fps): QGraphicsItemGroup(), m_fps(fps) {
34 setFlags(QGraphicsItem::ItemClipsToShape | QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
37 int AbstractGroupItem::type() const {
41 const int AbstractGroupItem::track() const {
42 return (int)(scenePos().y() / KdenliveSettings::trackheight());
45 CustomTrackScene* AbstractGroupItem::projectScene() {
46 if (scene()) return static_cast <CustomTrackScene*>(scene());
50 QPainterPath AbstractGroupItem::groupShape(QPointF offset) {
52 QList<QGraphicsItem *> children = childItems();
53 for (int i = 0; i < children.count(); i++) {
54 if (children.at(i)->type() == AVWIDGET) {
55 QRectF r(children.at(i)->sceneBoundingRect());
63 void AbstractGroupItem::addItem(QGraphicsItem * item) {
68 void AbstractGroupItem::fixItemRect() {
69 QPointF start = boundingRect().topLeft();
70 if (start != QPointF(0, 0)) {
71 translate(0 - start.x(), 0 - start.y());
77 void AbstractGroupItem::paint(QPainter *p, const QStyleOptionGraphicsItem *option, QWidget *) {
78 p->fillRect(option->exposedRect, QColor(200, 100, 100, 100));
82 QVariant AbstractGroupItem::itemChange(GraphicsItemChange change, const QVariant &value) {
83 if (change == ItemPositionChange && scene()) {
84 // calculate new position.
85 const int trackHeight = KdenliveSettings::trackheight();
86 QPointF newPos = value.toPointF();
87 int xpos = projectScene()->getSnapPointForPos((int) newPos.x(), KdenliveSettings::snaptopoints());
91 QPointF start = pos();
92 //int startTrack = (start.y() + trackHeight / 2) / trackHeight;
93 int newTrack = (newPos.y()) / trackHeight;
94 //kDebug()<<"// GROUP NEW T:"<<newTrack<<",START T:"<<startTrack<<",MAX:"<<projectScene()->tracksCount() - 1;
95 newTrack = qMin(newTrack, projectScene()->tracksCount() - (int)(boundingRect().height() + 5) / trackHeight);
96 newTrack = qMax(newTrack, 0);
98 // Check if top item is a clip or a transition
101 QList<QGraphicsItem *> children = childItems();
102 for (int i = 0; i < children.count(); i++) {
103 int currentTrack = (int)(children.at(i)->scenePos().y() / trackHeight);
104 if (children.at(i)->type() == AVWIDGET) {
105 if (topTrack == -1 || currentTrack <= topTrack) {
107 topTrack = currentTrack;
109 } else if (children.at(i)->type() == TRANSITIONWIDGET) {
110 if (topTrack == -1 || currentTrack < topTrack) {
111 offset = (int)(trackHeight / 3 * 2 - 1);
112 topTrack = currentTrack;
116 newPos.setY((int)((newTrack) * trackHeight) + offset);
117 if (newPos == start) return start;
119 if (newPos.x() < 0) {
120 // If group goes below 0, adjust position to 0
121 return QPointF(pos().x() - start.x(), pos().y());
124 QPainterPath shape = groupShape(newPos - pos());
125 QList<QGraphicsItem*> collindingItems = scene()->items(shape, Qt::IntersectsItemShape);
126 for (int i = 0; i < children.count(); i++) {
127 collindingItems.removeAll(children.at(i));
129 if (collindingItems.isEmpty()) return newPos;
131 bool forwardMove = newPos.x() > start.x();
133 for (int i = 0; i < collindingItems.count(); i++) {
134 QGraphicsItem *collision = collindingItems.at(i);
135 if (collision->type() == AVWIDGET) {
137 //kDebug()<<"// COLLISION WIT:"<<collision->sceneBoundingRect();
138 if (newPos.y() != start.y()) {
139 // Track change results in collision, restore original position
142 AbstractClipItem *item = static_cast <AbstractClipItem *>(collision);
144 // Moving forward, determine best pos
145 QPainterPath clipPath;
146 clipPath.addRect(item->sceneBoundingRect());
147 QPainterPath res = shape.intersected(clipPath);
148 offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
150 // Moving backward, determine best pos
151 QPainterPath clipPath;
152 clipPath.addRect(item->sceneBoundingRect());
153 QPainterPath res = shape.intersected(clipPath);
154 offset = qMax(offset, (int)(res.boundingRect().width() + 0.5));
160 newPos.setX(newPos.x() - offset);
162 newPos.setX(newPos.x() + offset);
164 // If there is still a collision after our position adjust, restore original pos
165 collindingItems = scene()->items(groupShape(newPos - pos()), Qt::IntersectsItemShape);
166 for (int i = 0; i < children.count(); i++) {
167 collindingItems.removeAll(children.at(i));
169 for (int i = 0; i < collindingItems.count(); i++)
170 if (collindingItems.at(i)->type() == AVWIDGET) return pos();
175 return QGraphicsItemGroup::itemChange(change, value);