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 ***************************************************************************/
21 #include <QGraphicsScene>
22 #include <QGraphicsView>
24 #include <QStyleOptionGraphicsItem>
30 #include "transition.h"
32 #include "kdenlivesettings.h"
35 Transition::Transition(const QRectF& rect , ClipItem * clipa, const QString & type, const GenTime &startTime, const GenTime &endTime, double fps, bool inverted) : AbstractClipItem(rect) {
36 m_invertTransition = inverted;
38 m_transitionTrack = clipa->track();
40 m_transitionName = type;
42 m_cropDuration = endTime - startTime;
43 m_startPos = startTime;
44 m_maxDuration = GenTime(1000000);
45 // Default duration = 2.5 seconds
46 GenTime defaultTransitionDuration = GenTime(2.5);
48 m_referenceClip = clipa;
50 if (startTime < m_referenceClip->startPos()) m_transitionStart = GenTime(0.0);
51 else if (startTime > m_referenceClip->endPos()) m_transitionStart = m_referenceClip->duration() - defaultTransitionDuration;
52 else m_transitionStart = startTime - m_referenceClip->startPos();
54 if (m_transitionStart + m_cropDuration > m_referenceClip->duration())
55 m_transitionDuration = m_referenceClip->duration() - m_transitionStart;
56 else m_transitionDuration = m_cropDuration;
58 setFlags(QGraphicsItem::ItemClipsToShape | QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
62 doc.setContent(QString("<ktransition tag=\"luma\">\n\
64 <description>Luma Transitions</description>\n\
65 <properties id=\"luma\" tag=\"luma\" />\n\
66 <parameter type=\"bool\" name=\"reverse\" max=\"1\" min=\"0\" default=\"1\" factor=\"1\">\n\
67 <name>Reverse</name>\n\
70 m_transitionParameters = doc.documentElement();
72 m_referenceClip->addTransition(this);
75 // create a transition from XML
76 Transition::Transition(const QRectF& rect , ClipItem * clip, QDomElement transitionElement, double fps, GenTime offset) : AbstractClipItem(rect) {
77 if (offset == GenTime()) offset = clip->startPos();
78 m_referenceClip = clip;
81 m_transitionStart = GenTime(transitionElement.attribute("start", QString::null).toInt(), m_referenceClip->fps());
82 m_transitionDuration = GenTime(transitionElement.attribute("end", QString::null).toInt(), m_referenceClip->fps()) - m_transitionStart;
83 m_transitionTrack = transitionElement.attribute("transition_track", "0").toInt();
84 m_transitionStart = m_transitionStart - offset;
86 m_invertTransition = transitionElement.attribute("inverted", "0").toInt();
87 m_transitionName = transitionElement.attribute("type" , "luma");
89 // load transition parameters
90 typedef QMap<QString, QString> ParamMap;
92 for (QDomNode n = transitionElement.firstChild(); !n.isNull(); n = n.nextSibling()) {
93 QDomElement paramElement = n.toElement();
94 params[paramElement.tagName()] = paramElement.attribute("value", QString::null);
96 if (m_invertTransition) params["reverse"] = "1";
97 //if (!params.isEmpty()) setTransitionParameters(params);
99 // Check if transition is valid (not outside of clip)
100 if (m_transitionStart > clip->duration())
101 m_transitionDuration = GenTime();
105 Transition::~Transition() {
108 QString Transition::transitionName() const {
109 return m_transitionName;
112 void Transition::setTransitionParameters(const QDomElement & elem) {
113 m_transitionParameters = elem;
114 m_transitionName = elem.attribute("tag");
117 bool Transition::invertTransition() const {
119 if (m_referenceClip->startPos() < m_secondClip->startPos()) return true;
122 return m_invertTransition;
125 QPixmap Transition::transitionPixmap() const {
127 if (m_transitionName == "luma") {
128 if (invertTransition()) icon = KIcon("kdenlive_trans_up");
129 else icon = KIcon("kdenlive_trans_down");
130 } else if (m_transitionName == "composite") {
131 icon = KIcon("kdenlive_trans_wiper");
132 } else if (m_transitionName == "lumafile") {
133 icon = KIcon("kdenlive_trans_luma");
134 } else icon = KIcon("kdenlive_trans_pip");
135 return icon.pixmap(QSize(15, 15));
138 int Transition::transitionTrack() const {
139 return m_transitionTrack;
142 void Transition::setTransitionTrack(int track) {
143 m_transitionTrack = track;
146 void Transition::setTransitionDirection(bool inv) {
147 m_invertTransition = inv;
150 int Transition::transitionStartTrack() const {
151 return m_referenceClip->track();
154 int Transition::transitionEndTrack() const {
155 if (!m_singleClip) return m_secondClip->track();
156 return m_referenceClip->track() + 1;
157 //TODO: calculate next video track
160 GenTime Transition::transitionDuration() const {
161 return transitionEndTime() - transitionStartTime();
164 GenTime Transition::transitionStartTime() const {
166 GenTime startb = m_secondClip->startPos();
167 GenTime starta = m_referenceClip->startPos();
168 if (startb > m_referenceClip->endPos()) return m_referenceClip->endPos() - GenTime(0.12);
172 } else return m_referenceClip->startPos() + m_transitionStart;
176 GenTime Transition::transitionEndTime() const {
178 GenTime endb = m_secondClip->endPos();
179 GenTime enda = m_referenceClip->endPos();
180 if (m_secondClip->startPos() > enda) return enda;
181 if (endb < m_referenceClip->startPos()) return m_referenceClip->startPos() + GenTime(0.12);
182 else if (endb > enda) return enda;
185 if (m_transitionStart + m_transitionDuration > m_referenceClip->duration())
186 return m_referenceClip->endPos();
187 return m_referenceClip->startPos() + m_transitionStart + m_transitionDuration;
190 void Transition::paint(QPainter *painter,
191 const QStyleOptionGraphicsItem *option,
193 QRect rectInView = visibleRect();//this is the rect that is visible by the user
195 if (rectInView.isNull())
197 QPainterPath clippath;
198 clippath.addRect(rectInView);
200 QPainterPath roundRectPathUpper = upperRectPart(br), roundRectPathLower = lowerRectPart(br);
202 QPainterPath resultClipPath = roundRectPathUpper.united(roundRectPathLower);
204 painter->setClipPath(resultClipPath.intersected(clippath), Qt::IntersectClip);
205 //painter->fillPath(roundRectPath, brush()); //, QBrush(QColor(Qt::red)));
206 painter->fillRect(br.intersected(rectInView), QBrush(QColor(200, 200, 0, 160)/*,Qt::Dense4Pattern*/));
207 painter->setClipRect(option->exposedRect);
208 painter->drawPixmap((int)(br.x() + 10), (int)(br.y() + 10), transitionPixmap());
209 painter->drawPath(resultClipPath.intersected(clippath));
211 QPen pen = painter->pen();
213 pen.setColor(Qt::red);
216 pen.setColor(Qt::black);
219 painter->setPen(pen);
220 painter->setClipRect(option->exposedRect);
221 painter->drawPath(resultClipPath.intersected(clippath));
224 int Transition::type() const {
225 return TRANSITIONWIDGET;
227 OPERATIONTYPE Transition::operationMode(QPointF pos, double scale) {
228 if (abs((int)(pos.x() - rect().x())) < 6) return RESIZESTART;
229 else if (abs((int)(pos.x() - (rect().x() + rect().width()))) < 6) return RESIZEEND;
232 void Transition::resizeTransitionStart(GenTime time) {
233 if (!m_singleClip) return; //cannot resize automatic transitions
234 if (time < m_referenceClip->startPos()) time = m_referenceClip->startPos();
235 // Transitions shouldn't be shorter than 3 frames, about 0.12 seconds
236 if (transitionEndTime().ms() - time.ms() < 120.0) time = transitionEndTime() - GenTime(0.12);
237 m_transitionDuration = m_transitionDuration - (time - m_referenceClip->startPos() - m_transitionStart);
238 m_transitionStart = time - m_referenceClip->startPos();
241 void Transition::resizeTransitionEnd(GenTime time) {
242 if (!m_singleClip) return; //cannot resize automatic transitions
243 if (time > m_referenceClip->endPos()) time = m_referenceClip->endPos();
244 // Transitions shouldn't be shorter than 3 frames, about 0.12 seconds
245 if (time.ms() - transitionStartTime().ms() < 120.0) time = transitionStartTime() + GenTime(0.12);
246 m_transitionDuration = time - (m_referenceClip->startPos() + m_transitionStart);
249 void Transition::moveTransition(GenTime time) {
250 if (!m_singleClip) return; //cannot move automatic transitions
251 if (m_transitionStart + time < GenTime(0.0)) m_transitionStart = GenTime(0.0);
252 else if (m_transitionStart + time > m_referenceClip->duration() - m_transitionDuration)
253 m_transitionStart = m_referenceClip->duration() - m_transitionDuration;
254 else m_transitionStart = m_transitionStart + time;
255 if (m_transitionStart < GenTime(0.0)) m_transitionStart = GenTime(0.0);
258 bool Transition::hasClip(const ClipItem * clip) const {
259 if (clip == m_secondClip) return true;
263 bool Transition::belongsToClip(const ClipItem * clip) const {
264 if (clip == m_referenceClip) return true;
268 Transition *Transition::clone() {
269 return new Transition::Transition(rect(), m_referenceClip, this->toXML() , m_fps);
270 /*if (m_singleClip || m_secondClip == 0)
271 return new Transition::Transition(m_referenceClip);
273 //return new Transition::Transition(m_referenceClip, m_secondClip);
274 return new Transition::Transition(m_referenceClip, this->toXML());
278 Transition *Transition::reparent(ClipItem * clip) {
279 return new Transition::Transition(rect(), clip, this->toXML(), m_fps, m_referenceClip->startPos());
282 bool Transition::isValid() const {
283 return (m_transitionDuration != GenTime());
286 const ClipItem *Transition::referencedClip() const {
287 return m_referenceClip;
290 QDomElement Transition::toXML() {
291 m_transitionParameters.setAttribute("type", m_transitionName);
292 //m_transitionParameters.setAttribute("inverted", invertTransition());
293 m_transitionParameters.setAttribute("transition_track", m_transitionTrack);
294 m_transitionParameters.setAttribute("start", transitionStartTime().frames(m_referenceClip->fps()));
295 m_transitionParameters.setAttribute("end", transitionEndTime().frames(m_referenceClip->fps()));
298 m_transitionParameters.setAttribute("clipb_starttime", m_secondClip->startPos().frames(m_referenceClip->fps()));
299 m_transitionParameters.setAttribute("clipb_track", transitionEndTrack());
303 /* QMap<QString, QString>::Iterator it;
304 for (it = m_transitionParameters.begin(); it != m_transitionParameters.end(); ++it) {
305 QDomElement param = doc.createElement(it.key());
306 param.setAttribute("value", it.value());
307 effect.appendChild(param);
310 return m_transitionParameters;