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 TRANSITIONTYPE & type, const GenTime &startTime, const GenTime &endTime, double fps, bool inverted) : AbstractClipItem(rect) {
36 m_invertTransition = inverted;
38 m_transitionTrack = 0;
40 m_transitionType = type;
41 m_transitionName = getTransitionName(m_transitionType);
43 m_cropDuration = endTime - startTime;
44 m_startPos = startTime;
45 m_maxDuration = GenTime(1000000);
46 // Default duration = 2.5 seconds
47 GenTime defaultTransitionDuration = GenTime(2.5);
49 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 // create a transition from XML
63 Transition::Transition(const QRectF& rect , ClipItem * clip, QDomElement transitionElement, double fps, GenTime offset) : AbstractClipItem(rect) {
64 if (offset == GenTime()) offset = clip->startPos();
65 m_referenceClip = clip;
68 m_transitionStart = GenTime(transitionElement.attribute("start", QString::null).toInt(), m_referenceClip->fps());
69 m_transitionDuration = GenTime(transitionElement.attribute("end", QString::null).toInt(), m_referenceClip->fps()) - m_transitionStart;
70 m_transitionTrack = transitionElement.attribute("transition_track", "0").toInt();
71 m_transitionStart = m_transitionStart - offset;
73 m_invertTransition = transitionElement.attribute("inverted", "0").toInt();
74 uint transType = transitionElement.attribute("type", "0").toInt();
75 if (transType == LUMA_TRANSITION) m_transitionType = LUMA_TRANSITION;
76 else if (transType == COMPOSITE_TRANSITION) m_transitionType = COMPOSITE_TRANSITION;
77 else if (transType == PIP_TRANSITION) m_transitionType = PIP_TRANSITION;
78 else if (transType == LUMAFILE_TRANSITION) m_transitionType = LUMAFILE_TRANSITION;
79 else if (transType == MIX_TRANSITION) m_transitionType = MIX_TRANSITION;
81 // load transition parameters
82 typedef QMap<QString, QString> ParamMap;
84 for (QDomNode n = transitionElement.firstChild(); !n.isNull(); n = n.nextSibling()) {
85 QDomElement paramElement = n.toElement();
86 params[paramElement.tagName()] = paramElement.attribute("value", QString::null);
88 if (m_invertTransition) params["reverse"] = "1";
89 if (!params.isEmpty()) setTransitionParameters(params);
91 // Check if transition is valid (not outside of clip)
92 if (m_transitionStart > clip->duration())
93 m_transitionDuration = GenTime();
97 Transition::~Transition() {
100 void Transition::setTransitionType(TRANSITIONTYPE newType) {
101 m_transitionType = newType;
102 m_transitionName = getTransitionName(m_transitionType);
105 TRANSITIONTYPE Transition::transitionType() const {
106 return m_transitionType;
109 QString Transition::transitionTag()const {
110 switch (m_transitionType) {
111 case COMPOSITE_TRANSITION:
123 QString Transition::getTransitionName(const TRANSITIONTYPE & type) {
124 if (type == COMPOSITE_TRANSITION) return i18n("Push");
125 else if (type == PIP_TRANSITION) return i18n("Pip");
126 else if (type == LUMAFILE_TRANSITION) return i18n("Wipe");
127 else if (type == MIX_TRANSITION) return i18n("Audio Fade");
128 return i18n("Crossfade");
131 TRANSITIONTYPE Transition::getTransitionForName(const QString & type) {
132 if (type == i18n("Push")) return COMPOSITE_TRANSITION;
133 else if (type == i18n("Pip")) return PIP_TRANSITION;
134 else if (type == i18n("Wipe")) return LUMAFILE_TRANSITION;
135 return LUMA_TRANSITION;
139 QString Transition::transitionName() const {
140 return m_transitionName;
143 void Transition::setTransitionParameters(const QMap < QString, QString > parameters) {
144 m_transitionParameters = parameters;
147 const QMap < QString, QString > Transition::transitionParameters() const {
148 return m_transitionParameters;
151 bool Transition::invertTransition() const {
153 if (m_referenceClip->startPos() < m_secondClip->startPos()) return true;
156 return m_invertTransition;
159 QPixmap Transition::transitionPixmap() const {
161 if (m_transitionType == LUMA_TRANSITION) {
162 if (invertTransition()) icon = KIcon("kdenlive_trans_down");
163 else icon = KIcon("kdenlive_trans_up");
164 } else if (m_transitionType == COMPOSITE_TRANSITION) {
165 icon = KIcon("kdenlive_trans_wiper");
166 } else if (m_transitionType == LUMAFILE_TRANSITION) {
167 icon = KIcon("kdenlive_trans_luma");
168 } else icon = KIcon("kdenlive_trans_pip");
169 return icon.pixmap(QSize(15, 15));
172 int Transition::transitionTrack() const {
173 return m_transitionTrack;
176 void Transition::setTransitionTrack(int track) {
177 m_transitionTrack = track;
180 void Transition::setTransitionDirection(bool inv) {
181 m_invertTransition = inv;
184 int Transition::transitionStartTrack() const {
185 return m_referenceClip->track();
188 int Transition::transitionEndTrack() const {
189 if (!m_singleClip) return m_secondClip->track();
190 return m_referenceClip->track() + 1;
191 //TODO: calculate next video track
194 GenTime Transition::transitionDuration() const {
195 return transitionEndTime() - transitionStartTime();
198 GenTime Transition::transitionStartTime() const {
200 GenTime startb = m_secondClip->startPos();
201 GenTime starta = m_referenceClip->startPos();
202 if (startb > m_referenceClip->endPos()) return m_referenceClip->endPos() - GenTime(0.12);
206 } else return m_referenceClip->startPos() + m_transitionStart;
210 GenTime Transition::transitionEndTime() const {
212 GenTime endb = m_secondClip->endPos();
213 GenTime enda = m_referenceClip->endPos();
214 if (m_secondClip->startPos() > enda) return enda;
215 if (endb < m_referenceClip->startPos()) return m_referenceClip->startPos() + GenTime(0.12);
216 else if (endb > enda) return enda;
219 if (m_transitionStart + m_transitionDuration > m_referenceClip->duration())
220 return m_referenceClip->endPos();
221 return m_referenceClip->startPos() + m_transitionStart + m_transitionDuration;
224 void Transition::paint(QPainter *painter,
225 const QStyleOptionGraphicsItem *option,
227 QRect rectInView;//this is the rect that is visible by the user
228 if (scene()->views().size() > 0) {
229 rectInView = scene()->views()[0]->viewport()->rect();
230 rectInView.moveTo(scene()->views()[0]->horizontalScrollBar()->value(), scene()->views()[0]->verticalScrollBar()->value());
231 rectInView.adjust(-10, -10, 10, 10);//make view rect 10 pixel greater on each site, or repaint after scroll event
232 //kDebug() << scene()->views()[0]->viewport()->rect() << " " << scene()->views()[0]->horizontalScrollBar()->value();
234 if (rectInView.isNull())
236 QPainterPath clippath;
237 clippath.addRect(rectInView);
239 QPainterPath roundRectPathUpper, roundRectPathLower;
240 double roundingY = 20;
241 double roundingX = 20;
243 painter->setClipRect(option->exposedRect);
244 if (roundingX > br.width() / 2) roundingX = br.width() / 2;
246 int br_endx = (int)(br.x() + br .width() - offset);
247 int br_startx = (int)(br.x() + offset);
248 int br_starty = (int)(br.y());
249 int br_halfy = (int)(br.y() + br.height() / 2 - offset);
250 int br_endy = (int)(br.y() + br.height());
253 // build path around clip
254 roundRectPathUpper.moveTo(br_endx , br_halfy);
255 roundRectPathUpper.arcTo(br_endx - roundingX , br_starty , roundingX, roundingY, 0.0, 90.0);
256 roundRectPathUpper.lineTo(br_startx + roundingX , br_starty);
257 roundRectPathUpper.arcTo(br_startx , br_starty , roundingX, roundingY, 90.0, 90.0);
258 roundRectPathUpper.lineTo(br_startx, br_halfy);
260 roundRectPathLower.moveTo(br_startx , br_halfy);
261 roundRectPathLower.arcTo(br_startx , br_endy - roundingY , roundingX, roundingY, 180.0, 90.0);
262 roundRectPathLower.lineTo(br_endx - roundingX , br_endy);
263 roundRectPathLower.arcTo(br_endx - roundingX , br_endy - roundingY, roundingX, roundingY, 270.0, 90.0);
264 roundRectPathLower.lineTo(br_endx , br_halfy);
266 QPainterPath resultClipPath = roundRectPathUpper.united(roundRectPathLower);
268 painter->setClipPath(resultClipPath.intersected(clippath), Qt::IntersectClip);
269 //painter->fillPath(roundRectPath, brush()); //, QBrush(QColor(Qt::red)));
270 painter->fillRect(br.intersected(rectInView), QBrush(QColor(200, 200, 0, 160)));
271 painter->setClipRect(option->exposedRect);
272 painter->drawPath(resultClipPath.intersected(clippath));
275 int Transition::type() const {
278 OPERATIONTYPE Transition::operationMode(QPointF pos, double scale) {
279 if (abs((int)(pos.x() - rect().x())) < 6) return RESIZESTART;
280 else if (abs((int)(pos.x() - (rect().x() + rect().width()))) < 6) return RESIZEEND;
283 void Transition::resizeTransitionStart(GenTime time) {
284 if (!m_singleClip) return; //cannot resize automatic transitions
285 if (time < m_referenceClip->startPos()) time = m_referenceClip->startPos();
286 // Transitions shouldn't be shorter than 3 frames, about 0.12 seconds
287 if (transitionEndTime().ms() - time.ms() < 120.0) time = transitionEndTime() - GenTime(0.12);
288 m_transitionDuration = m_transitionDuration - (time - m_referenceClip->startPos() - m_transitionStart);
289 m_transitionStart = time - m_referenceClip->startPos();
292 void Transition::resizeTransitionEnd(GenTime time) {
293 if (!m_singleClip) return; //cannot resize automatic transitions
294 if (time > m_referenceClip->endPos()) time = m_referenceClip->endPos();
295 // Transitions shouldn't be shorter than 3 frames, about 0.12 seconds
296 if (time.ms() - transitionStartTime().ms() < 120.0) time = transitionStartTime() + GenTime(0.12);
297 m_transitionDuration = time - (m_referenceClip->startPos() + m_transitionStart);
300 void Transition::moveTransition(GenTime time) {
301 if (!m_singleClip) return; //cannot move automatic transitions
302 if (m_transitionStart + time < GenTime(0.0)) m_transitionStart = GenTime(0.0);
303 else if (m_transitionStart + time > m_referenceClip->duration() - m_transitionDuration)
304 m_transitionStart = m_referenceClip->duration() - m_transitionDuration;
305 else m_transitionStart = m_transitionStart + time;
306 if (m_transitionStart < GenTime(0.0)) m_transitionStart = GenTime(0.0);
309 bool Transition::hasClip(const ClipItem * clip) const {
310 if (clip == m_secondClip) return true;
314 bool Transition::belongsToClip(const ClipItem * clip) const {
315 if (clip == m_referenceClip) return true;
319 Transition *Transition::clone() {
320 return new Transition::Transition(rect(), m_referenceClip, this->toXML() , m_fps);
321 /*if (m_singleClip || m_secondClip == 0)
322 return new Transition::Transition(m_referenceClip);
324 //return new Transition::Transition(m_referenceClip, m_secondClip);
325 return new Transition::Transition(m_referenceClip, this->toXML());
329 Transition *Transition::reparent(ClipItem * clip) {
330 return new Transition::Transition(rect(), clip, this->toXML(), m_fps, m_referenceClip->startPos());
333 bool Transition::isValid() const {
334 return (m_transitionDuration != GenTime());
337 const ClipItem *Transition::referencedClip() const {
338 return m_referenceClip;
341 QDomElement Transition::toXML() {
343 QDomElement effect = doc.createElement("ktransition");
344 effect.setAttribute("type", transitionType());
345 effect.setAttribute("inverted", invertTransition());
346 effect.setAttribute("transition_track", m_transitionTrack);
347 effect.setAttribute("start", transitionStartTime().frames(m_referenceClip->fps()));
348 effect.setAttribute("end", transitionEndTime().frames(m_referenceClip->fps()));
351 effect.setAttribute("clipb_starttime", m_secondClip->startPos().frames(m_referenceClip->fps()));
352 effect.setAttribute("clipb_track", transitionEndTrack());
356 QMap<QString, QString>::Iterator it;
357 for (it = m_transitionParameters.begin(); it != m_transitionParameters.end(); ++it) {
358 QDomElement param = doc.createElement(it.key());
359 param.setAttribute("value", it.value());
360 effect.appendChild(param);