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 ***************************************************************************/
25 #include "transition.h"
27 #include "kdenlivesettings.h"
30 Transition::Transition(ClipItem * clipa, const TRANSITIONTYPE & type, const GenTime &startTime, const GenTime &endTime, bool inverted) {
31 m_invertTransition = inverted;
33 m_transitionTrack = 0;
35 m_transitionType = type;
36 m_transitionName = getTransitionName(m_transitionType);
38 GenTime duration = endTime - startTime;
40 // Default duration = 2.5 seconds
41 GenTime defaultTransitionDuration = GenTime(2.5);
43 m_referenceClip = clipa;
44 if (startTime < m_referenceClip->startPos()) m_transitionStart = GenTime(0.0);
45 else if (startTime > m_referenceClip->endPos()) m_transitionStart = m_referenceClip->duration() - defaultTransitionDuration;
46 else m_transitionStart = startTime - m_referenceClip->startPos();
48 if (m_transitionStart + duration > m_referenceClip->duration())
49 m_transitionDuration = m_referenceClip->duration() - m_transitionStart;
50 else m_transitionDuration = duration;
54 // create a transition from XML
55 Transition::Transition(ClipItem * clip, QDomElement transitionElement, GenTime offset) {
56 if (offset == GenTime()) offset = clip->startPos();
57 m_referenceClip = clip;
60 m_transitionStart = GenTime(transitionElement.attribute("start", QString::null).toInt(), m_referenceClip->fps());
61 m_transitionDuration = GenTime(transitionElement.attribute("end", QString::null).toInt(), m_referenceClip->fps()) - m_transitionStart;
62 m_transitionTrack = transitionElement.attribute("transition_track", "0").toInt();
63 m_transitionStart = m_transitionStart - offset;
65 m_invertTransition = transitionElement.attribute("inverted", "0").toInt();
66 uint transType = transitionElement.attribute("type", "0").toInt();
67 if (transType == LUMA_TRANSITION) m_transitionType = LUMA_TRANSITION;
68 else if (transType == COMPOSITE_TRANSITION) m_transitionType = COMPOSITE_TRANSITION;
69 else if (transType == PIP_TRANSITION) m_transitionType = PIP_TRANSITION;
70 else if (transType == LUMAFILE_TRANSITION) m_transitionType = LUMAFILE_TRANSITION;
71 else if (transType == MIX_TRANSITION) m_transitionType = MIX_TRANSITION;
73 // load transition parameters
74 typedef QMap<QString, QString> ParamMap;
76 for (QDomNode n = transitionElement.firstChild(); !n.isNull(); n = n.nextSibling()) {
77 QDomElement paramElement = n.toElement();
78 params[paramElement.tagName()] = paramElement.attribute("value", QString::null);
80 if (m_invertTransition) params["reverse"] = "1";
81 if (!params.isEmpty()) setTransitionParameters(params);
83 // Check if transition is valid (not outside of clip)
84 if (m_transitionStart > clip->duration())
85 m_transitionDuration = GenTime();
88 Transition::~Transition() {
91 void Transition::setTransitionType(TRANSITIONTYPE newType) {
92 m_transitionType = newType;
93 m_transitionName = getTransitionName(m_transitionType);
96 TRANSITIONTYPE Transition::transitionType() const {
97 return m_transitionType;
100 QString Transition::transitionTag()const {
101 switch (m_transitionType) {
102 case COMPOSITE_TRANSITION:
114 QString Transition::getTransitionName(const TRANSITIONTYPE & type) {
115 if (type == COMPOSITE_TRANSITION) return i18n("Push");
116 else if (type == PIP_TRANSITION) return i18n("Pip");
117 else if (type == LUMAFILE_TRANSITION) return i18n("Wipe");
118 else if (type == MIX_TRANSITION) return i18n("Audio Fade");
119 return i18n("Crossfade");
122 TRANSITIONTYPE Transition::getTransitionForName(const QString & type) {
123 if (type == i18n("Push")) return COMPOSITE_TRANSITION;
124 else if (type == i18n("Pip")) return PIP_TRANSITION;
125 else if (type == i18n("Wipe")) return LUMAFILE_TRANSITION;
126 return LUMA_TRANSITION;
130 QString Transition::transitionName() const {
131 return m_transitionName;
134 void Transition::setTransitionParameters(const QMap < QString, QString > parameters) {
135 m_transitionParameters = parameters;
138 const QMap < QString, QString > Transition::transitionParameters() const {
139 return m_transitionParameters;
142 bool Transition::invertTransition() const {
144 if (m_referenceClip->startPos() < m_secondClip->startPos()) return true;
147 return m_invertTransition;
150 QPixmap Transition::transitionPixmap() const {
152 if (m_transitionType == LUMA_TRANSITION) {
153 if (invertTransition()) icon = KIcon("kdenlive_trans_down");
154 else icon = KIcon("kdenlive_trans_up");
155 } else if (m_transitionType == COMPOSITE_TRANSITION) {
156 icon = KIcon("kdenlive_trans_wiper");
157 } else if (m_transitionType == LUMAFILE_TRANSITION) {
158 icon = KIcon("kdenlive_trans_luma");
159 } else icon = KIcon("kdenlive_trans_pip");
160 return icon.pixmap(QSize(15, 15));
163 int Transition::transitionTrack() const {
164 return m_transitionTrack;
167 void Transition::setTransitionTrack(int track) {
168 m_transitionTrack = track;
171 void Transition::setTransitionDirection(bool inv) {
172 m_invertTransition = inv;
175 int Transition::transitionStartTrack() const {
176 return m_referenceClip->track();
179 int Transition::transitionEndTrack() const {
180 if (!m_singleClip) return m_secondClip->track();
181 return m_referenceClip->track() + 1;
182 //TODO: calculate next video track
185 GenTime Transition::transitionDuration() const {
186 return transitionEndTime() - transitionStartTime();
189 GenTime Transition::transitionStartTime() const {
191 GenTime startb = m_secondClip->startPos();
192 GenTime starta = m_referenceClip->startPos();
193 if (startb > m_referenceClip->endPos()) return m_referenceClip->endPos() - GenTime(0.12);
197 } else return m_referenceClip->startPos() + m_transitionStart;
201 GenTime Transition::transitionEndTime() const {
203 GenTime endb = m_secondClip->endPos();
204 GenTime enda = m_referenceClip->endPos();
205 if (m_secondClip->startPos() > enda) return enda;
206 if (endb < m_referenceClip->startPos()) return m_referenceClip->startPos() + GenTime(0.12);
207 else if (endb > enda) return enda;
210 if (m_transitionStart + m_transitionDuration > m_referenceClip->duration())
211 return m_referenceClip->endPos();
212 return m_referenceClip->startPos() + m_transitionStart + m_transitionDuration;
217 void Transition::resizeTransitionStart(GenTime time) {
218 if (!m_singleClip) return; //cannot resize automatic transitions
219 if (time < m_referenceClip->startPos()) time = m_referenceClip->startPos();
220 // Transitions shouldn't be shorter than 3 frames, about 0.12 seconds
221 if (transitionEndTime().ms() - time.ms() < 120.0) time = transitionEndTime() - GenTime(0.12);
222 m_transitionDuration = m_transitionDuration - (time - m_referenceClip->startPos() - m_transitionStart);
223 m_transitionStart = time - m_referenceClip->startPos();
226 void Transition::resizeTransitionEnd(GenTime time) {
227 if (!m_singleClip) return; //cannot resize automatic transitions
228 if (time > m_referenceClip->endPos()) time = m_referenceClip->endPos();
229 // Transitions shouldn't be shorter than 3 frames, about 0.12 seconds
230 if (time.ms() - transitionStartTime().ms() < 120.0) time = transitionStartTime() + GenTime(0.12);
231 m_transitionDuration = time - (m_referenceClip->startPos() + m_transitionStart);
234 void Transition::moveTransition(GenTime time) {
235 if (!m_singleClip) return; //cannot move automatic transitions
236 if (m_transitionStart + time < GenTime(0.0)) m_transitionStart = GenTime(0.0);
237 else if (m_transitionStart + time > m_referenceClip->duration() - m_transitionDuration)
238 m_transitionStart = m_referenceClip->duration() - m_transitionDuration;
239 else m_transitionStart = m_transitionStart + time;
240 if (m_transitionStart < GenTime(0.0)) m_transitionStart = GenTime(0.0);
243 bool Transition::hasClip(const ClipItem * clip) const {
244 if (clip == m_secondClip) return true;
248 bool Transition::belongsToClip(const ClipItem * clip) const {
249 if (clip == m_referenceClip) return true;
253 Transition *Transition::clone() {
254 return new Transition::Transition(m_referenceClip, this->toXML());
255 /*if (m_singleClip || m_secondClip == 0)
256 return new Transition::Transition(m_referenceClip);
258 //return new Transition::Transition(m_referenceClip, m_secondClip);
259 return new Transition::Transition(m_referenceClip, this->toXML());
263 Transition *Transition::reparent(ClipItem * clip) {
264 return new Transition::Transition(clip, this->toXML(), m_referenceClip->startPos());
267 bool Transition::isValid() const {
268 return (m_transitionDuration != GenTime());
271 const ClipItem *Transition::referencedClip() const {
272 return m_referenceClip;
275 QDomElement Transition::toXML() {
277 QDomElement effect = doc.createElement("ktransition");
278 effect.setAttribute("type", transitionType());
279 effect.setAttribute("inverted", invertTransition());
280 effect.setAttribute("transition_track", m_transitionTrack);
281 effect.setAttribute("start", transitionStartTime().frames(m_referenceClip->fps()));
282 effect.setAttribute("end", transitionEndTime().frames(m_referenceClip->fps()));
285 effect.setAttribute("clipb_starttime", m_secondClip->startPos().frames(m_referenceClip->fps()));
286 effect.setAttribute("clipb_track", transitionEndTrack());
290 QMap<QString, QString>::Iterator it;
291 for (it = m_transitionParameters.begin(); it != m_transitionParameters.end(); ++it) {
292 QDomElement param = doc.createElement(it.key());
293 param.setAttribute("value", it.value());
294 effect.appendChild(param);