1 /***************************************************************************
2 transition.cpp - description
4 begin : Tue Jan 24 2006
5 copyright : (C) 2006 by Jean-Baptiste Mardelle
7 ***************************************************************************/
9 /***************************************************************************
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 ***************************************************************************/
19 #include <QDomElement>
21 #include <QGraphicsScene>
22 #include <QGraphicsView>
24 #include <QStyleOptionGraphicsItem>
30 #include "transition.h"
32 #include "kdenlivesettings.h"
33 #include "customtrackscene.h"
34 #include "mainwindow.h"
36 Transition::Transition(const ItemInfo info, int transitiontrack, double fps, QDomElement params, bool automaticTransition) : AbstractClipItem(info, QRectF(), fps), m_gradient(QLinearGradient(0, 0, 0, 0)), m_automaticTransition(automaticTransition) {
37 setRect(0, 0, (qreal)(info.endPos - info.startPos).frames(fps) - 0.02, (qreal)(KdenliveSettings::trackheight() / 3 * 2 - 1));
38 setPos((qreal) info.startPos.frames(fps), (qreal)(info.track * KdenliveSettings::trackheight() + KdenliveSettings::trackheight() / 3 * 2));
41 m_transitionTrack = transitiontrack;
43 m_cropStart = GenTime();
44 m_maxDuration = GenTime(10000, fps);
46 m_gradient.setColorAt(0, QColor(200, 200, 0, 150));
47 m_gradient.setColorAt(1, QColor(200, 200, 200, 120));
49 //m_referenceClip = clipa;
50 if (params.isNull()) {
51 m_parameters = MainWindow::transitions.getEffectByName("Luma");
53 m_parameters = params;
55 if (m_automaticTransition) m_parameters.setAttribute("automatic", 1);
56 else if (m_parameters.attribute("automatic") == "1") m_automaticTransition = true;
57 m_name = m_parameters.elementsByTagName("name").item(0).toElement().text();
59 setFlags(QGraphicsItem::ItemClipsToShape | QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
62 //m_referenceClip->addTransition(this);
65 Transition::~Transition() {
68 Transition *Transition::clone() {
69 QDomElement xml = toXML().cloneNode().toElement();
70 Transition *tr = new Transition(info(), transitionEndTrack(), m_fps, xml);
74 QString Transition::transitionName() const {
78 QString Transition::transitionTag() const {
79 return m_parameters.attribute("tag");
82 bool Transition::isAutomatic() const {
83 return m_automaticTransition;
86 void Transition::setTransitionParameters(const QDomElement params) {
87 m_parameters = params;
88 m_name = m_parameters.elementsByTagName("name").item(0).toElement().text();
93 bool Transition::invertedTransition() const {
94 return false; //m_parameters.attribute("reverse").toInt();
97 QPixmap Transition::transitionPixmap() const {
99 QString tag = transitionTag();
101 if (invertedTransition()) icon = KIcon("kdenlive_trans_up");
102 else icon = KIcon("kdenlive_trans_down");
103 } else if (tag == "composite") {
104 icon = KIcon("kdenlive_trans_wiper");
105 } else if (tag == "lumafile") {
106 icon = KIcon("kdenlive_trans_luma");
107 } else icon = KIcon("kdenlive_trans_pip");
108 return icon.pixmap(QSize(15, 15));
112 void Transition::setTransitionDirection(bool inv) {
113 //m_parameters.setAttribute("reverse", inv);
116 int Transition::transitionEndTrack() const {
117 return m_transitionTrack;
120 void Transition::updateTransitionEndTrack(int newtrack) {
121 m_transitionTrack = newtrack;
124 void Transition::paint(QPainter *painter,
125 const QStyleOptionGraphicsItem *option,
127 const double scale = option->matrix.m11();
128 QRectF exposed = option->exposedRect;
129 painter->setClipRect(exposed);
131 m_gradient.setStart(0, br.y());
132 m_gradient.setFinalStop(0, br.bottom());
133 painter->fillRect(br, m_gradient);
135 int top = (int)(br.y() + br.height() / 2 - 7);
136 QPointF p1(br.x(), br.y() + br.height() / 2 - 7);
137 painter->setMatrixEnabled(false);
138 painter->drawPixmap(painter->matrix().map(p1) + QPointF(5, 0), transitionPixmap());
139 painter->setPen(QColor(0, 0, 0, 180));
140 top += painter->fontInfo().pixelSize();
141 QPointF p2(br.x(), top);
142 painter->drawText(painter->matrix().map(p2) + QPointF(26, 1), transitionName());
143 painter->setPen(QColor(255, 255, 255, 180));
144 QPointF p3(br.x(), top);
145 painter->drawText(painter->matrix().map(p3) + QPointF(25, 0), transitionName());
146 painter->setMatrixEnabled(true);
147 QPen pen = painter->pen();
149 pen.setColor(Qt::red);
152 pen.setColor(Qt::black);
155 // expand clip rect to allow correct painting of clip border
156 exposed.setRight(exposed.right() + 1 / scale + 0.5);
157 exposed.setBottom(exposed.bottom() + 1);
158 painter->setClipRect(exposed);
159 painter->setPen(pen);
160 painter->drawRect(br);
163 int Transition::type() const {
164 return TRANSITIONWIDGET;
168 QVariant Transition::itemChange(GraphicsItemChange change, const QVariant &value) {
169 if (change == ItemPositionChange && scene()) {
170 // calculate new position.
171 QPointF newPos = value.toPointF();
172 int xpos = projectScene()->getSnapPointForPos((int) newPos.x(), KdenliveSettings::snaptopoints());
173 xpos = qMax(xpos, 0);
175 int newTrack = newPos.y() / KdenliveSettings::trackheight();
176 newTrack = qMin(newTrack, projectScene()->tracksCount() - 1);
177 newTrack = qMax(newTrack, 0);
178 newPos.setY((int)(newTrack * KdenliveSettings::trackheight() + KdenliveSettings::trackheight() / 3 * 2));
179 // Only one clip is moving
180 QRectF sceneShape = rect();
181 sceneShape.translate(newPos);
182 QList<QGraphicsItem*> items = scene()->items(sceneShape, Qt::IntersectsItemShape);
183 items.removeAll(this);
185 if (!items.isEmpty()) {
186 for (int i = 0; i < items.count(); i++) {
187 if (items.at(i)->type() == type()) {
188 // Collision! Don't move.
189 //kDebug()<<"/// COLLISION WITH ITEM: "<<items.at(i)->boundingRect()<<", POS: "<<items.at(i)->pos()<<", ME: "<<newPos;
190 QPointF otherPos = items.at(i)->pos();
191 if ((int) otherPos.y() != (int) pos().y()) return pos();
192 //kDebug()<<"//// CURRENT Y: "<<pos().y()<<", COLLIDING Y: "<<otherPos.y();
193 if (pos().x() < otherPos.x()) {
194 int npos = (static_cast < AbstractClipItem* >(items.at(i))->startPos() - m_cropDuration).frames(m_fps);
197 // get pos just after colliding clip
198 int npos = static_cast < AbstractClipItem* >(items.at(i))->endPos().frames(m_fps);
202 //kDebug()<<"// ITEM NEW POS: "<<newPos.x()<<", mapped: "<<mapToScene(newPos.x(), 0).x();
203 m_startPos = GenTime((int) newPos.x(), m_fps);
209 m_startPos = GenTime((int) newPos.x(), m_fps);
210 //kDebug()<<"// ITEM NEW POS: "<<newPos.x()<<", mapped: "<<mapToScene(newPos.x(), 0).x();
213 return QGraphicsItem::itemChange(change, value);
217 OPERATIONTYPE Transition::operationMode(QPointF pos) {
218 const double scale = projectScene()->scale();
219 double maximumOffset = 6 / scale;
221 QRectF rect = sceneBoundingRect();
222 if (qAbs((int)(pos.x() - rect.x())) < maximumOffset) return RESIZESTART;
223 else if (qAbs((int)(pos.x() - (rect.right()))) < maximumOffset) return RESIZEEND;
227 bool Transition::hasClip(const ClipItem * clip) const {
228 if (clip == m_secondClip) return true;
232 bool Transition::belongsToClip(const ClipItem * clip) const {
233 if (clip == m_referenceClip) return true;
238 Transition *Transition::clone() {
239 return new Transition::Transition(rect(), m_referenceClip, this->toXML() , m_fps);
243 Transition *Transition::reparent(ClipItem * clip) {
244 return new Transition::Transition(rect(), clip, this->toXML(), m_fps, m_referenceClip->startPos());
247 bool Transition::isValid() const {
248 return true; //(m_transitionDuration != GenTime());
251 const ClipItem *Transition::referencedClip() const {
252 return m_referenceClip;
255 QDomElement Transition::toXML() {
256 m_parameters.setAttribute("type", transitionTag());
257 //m_transitionParameters.setAttribute("inverted", invertTransition());
258 m_parameters.setAttribute("transition_atrack", track());
259 m_parameters.setAttribute("transition_btrack", m_transitionTrack);
260 m_parameters.setAttribute("start", startPos().frames(m_fps));
261 m_parameters.setAttribute("end", endPos().frames(m_fps));
264 m_parameters.setAttribute("clipb_starttime", m_secondClip->startPos().frames(m_referenceClip->fps()));
265 m_parameters.setAttribute("clipb_track", transitionEndTrack());