Chris@127: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@127: 
Chris@127: /*
Chris@127:     Sonic Visualiser
Chris@127:     An audio file viewer and annotation editor.
Chris@127:     Centre for Digital Music, Queen Mary, University of London.
Chris@182:     This file copyright 2006 Chris Cannam and QMUL.
Chris@127:     
Chris@127:     This program is free software; you can redistribute it and/or
Chris@127:     modify it under the terms of the GNU General Public License as
Chris@127:     published by the Free Software Foundation; either version 2 of the
Chris@127:     License, or (at your option) any later version.  See the file
Chris@127:     COPYING included with this distribution for more information.
Chris@127: */
Chris@127: 
Chris@127: #include "Layer.h"
Chris@128: #include "view/View.h"
Chris@128: #include "data/model/Model.h"
Chris@268: #include "base/CommandHistory.h"
Chris@127: 
Chris@127: #include <iostream>
Chris@127: 
Chris@131: #include <QMutexLocker>
Chris@267: #include <QMouseEvent>
Chris@131: 
Chris@131: #include "LayerFactory.h"
Chris@128: #include "base/PlayParameterRepository.h"
Chris@127: 
Chris@272: #include <cmath>
Chris@272: 
Chris@267: Layer::Layer() :
Chris@267:     m_haveDraggingRect(false)
Chris@127: {
Chris@127: }
Chris@127: 
Chris@127: Layer::~Layer()
Chris@127: {
Chris@127: //    std::cerr << "Layer::~Layer(" << this << ")" << std::endl;
Chris@127: }
Chris@127: 
Chris@127: QString
Chris@127: Layer::getPropertyContainerIconName() const
Chris@127: {
Chris@127:     return LayerFactory::getInstance()->getLayerIconName
Chris@127: 	(LayerFactory::getInstance()->getLayerType(this));
Chris@127: }
Chris@127: 
Chris@127: QString
Chris@127: Layer::getLayerPresentationName() const
Chris@127: {
Chris@203: //    QString layerName = objectName();
Chris@203: 
Chris@203:     LayerFactory *factory = LayerFactory::getInstance();
Chris@203:     QString layerName = factory->getLayerPresentationName
Chris@203:         (factory->getLayerType(this));
Chris@203: 
Chris@127:     QString modelName;
Chris@127:     if (getModel()) modelName = getModel()->objectName();
Chris@127: 	    
Chris@127:     QString text;
Chris@127:     if (modelName != "") {
Chris@127: 	text = QString("%1: %2").arg(modelName).arg(layerName);
Chris@127:     } else {
Chris@127: 	text = layerName;
Chris@127:     }
Chris@127: 	
Chris@127:     return text;
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: Layer::setObjectName(const QString &name)
Chris@127: {
Chris@127:     QObject::setObjectName(name);
Chris@127:     emit layerNameChanged();
Chris@127: }
Chris@127: 
Chris@127: PlayParameters *
Chris@127: Layer::getPlayParameters() 
Chris@127: {
Chris@127: //    std::cerr << "Layer (" << this << ", " << objectName().toStdString() << ")::getPlayParameters: model is "<< getModel() << std::endl;
Chris@127:     const Model *model = getModel();
Chris@127:     if (model) {
Chris@127: 	return PlayParameterRepository::getInstance()->getPlayParameters(model);
Chris@127:     }
Chris@127:     return 0;
Chris@127: }
Chris@127: 
Chris@127: void
Chris@131: Layer::setLayerDormant(const View *v, bool dormant)
Chris@131: {
Chris@131:     const void *vv = (const void *)v;
Chris@131:     QMutexLocker locker(&m_dormancyMutex);
Chris@131:     m_dormancy[vv] = dormant;
Chris@131: }
Chris@131: 
Chris@131: bool
Chris@131: Layer::isLayerDormant(const View *v) const
Chris@131: {
Chris@131:     const void *vv = (const void *)v;
Chris@131:     QMutexLocker locker(&m_dormancyMutex);
Chris@131:     if (m_dormancy.find(vv) == m_dormancy.end()) return false;
Chris@131:     return m_dormancy.find(vv)->second;
Chris@131: }
Chris@131: 
Chris@131: void
Chris@127: Layer::showLayer(View *view, bool show)
Chris@127: {
Chris@127:     setLayerDormant(view, !show);
Chris@127:     emit layerParametersChanged();
Chris@127: }
Chris@127: 
Chris@260: bool
Chris@267: Layer::getXScaleValue(const View *v, int x, float &value, QString &unit) const
Chris@260: {
Chris@260:     if (!hasTimeXAxis()) return false;
Chris@260: 
Chris@260:     const Model *m = getModel();
Chris@260:     if (!m) return false;
Chris@260: 
Chris@260:     value = float(v->getFrameForX(x)) / m->getSampleRate();
Chris@260:     unit = "s";
Chris@260:     return true;
Chris@260: }
Chris@260: 
Chris@268: bool
Chris@274: Layer::getYScaleDifference(const View *v, int y0, int y1,
Chris@274:                            float &diff, QString &unit) const
Chris@274: {
Chris@274:     float v0, v1;
Chris@274:     if (!getYScaleValue(v, y0, v0, unit) ||
Chris@274:         !getYScaleValue(v, y1, v1, unit)) {
Chris@274:         diff = 0.f;
Chris@274:         return false;
Chris@274:     }
Chris@274:     diff = fabsf(v1 - v0);
Chris@274:     return true;
Chris@274: }
Chris@274: 
Chris@274: bool
Chris@268: Layer::MeasureRect::operator<(const MeasureRect &mr) const
Chris@268: {
Chris@268:     if (haveFrames) {
Chris@268:         if (startFrame == mr.startFrame) {
Chris@268:             if (endFrame != mr.endFrame) {
Chris@268:                 return endFrame < mr.endFrame;
Chris@268:             }
Chris@268:         } else {
Chris@268:             return startFrame < mr.startFrame;
Chris@268:         }
Chris@268:     } else {
Chris@268:         if (pixrect.x() == mr.pixrect.x()) {
Chris@268:             if (pixrect.width() != mr.pixrect.width()) {
Chris@268:                 return pixrect.width() < mr.pixrect.width();
Chris@268:             }
Chris@268:         } else {
Chris@268:             return pixrect.x() < mr.pixrect.x();
Chris@268:         }
Chris@268:     }
Chris@268: 
Chris@268:     // the two rects are equal in x and width
Chris@268: 
Chris@268:     if (pixrect.y() == mr.pixrect.y()) {
Chris@268:         return pixrect.height() < mr.pixrect.height();
Chris@268:     } else {
Chris@268:         return pixrect.y() < mr.pixrect.y();
Chris@268:     }
Chris@268: }
Chris@268: 
Chris@268: QString
Chris@269: Layer::MeasureRect::toXmlString(QString indent) const
Chris@269: {
Chris@269:     QString s;
Chris@269: 
Chris@269:     s += indent;
Chris@269:     s += QString("<measurement ");
Chris@269: 
Chris@269:     if (haveFrames) {
Chris@269:         s += QString("startFrame=\"%1\" endFrame=\"%2\" ")
Chris@269:             .arg(startFrame).arg(endFrame);
Chris@269:     } else {
Chris@269:         s += QString("startX=\"%1\" endX=\"%2\" ")
Chris@269:             .arg(pixrect.x()).arg(pixrect.x() + pixrect.width());
Chris@269:     }
Chris@269: 
Chris@269:     s += QString("startY=\"%1\" endY=\"%2\"/>\n")
Chris@273:         .arg(startY).arg(endY);
Chris@269: 
Chris@269:     return s;
Chris@269: }
Chris@269: 
Chris@269: void
Chris@269: Layer::addMeasurementRect(const QXmlAttributes &attributes)
Chris@269: {
Chris@269:     MeasureRect rect;
Chris@269:     QString fs = attributes.value("startFrame");
Chris@273:     int x0 = 0, x1 = 0;
Chris@269:     if (fs != "") {
Chris@269:         rect.startFrame = fs.toLong();
Chris@269:         rect.endFrame = attributes.value("endFrame").toLong();
Chris@269:         rect.haveFrames = true;
Chris@269:     } else {
Chris@269:         x0 = attributes.value("startX").toInt();
Chris@269:         x1 = attributes.value("endX").toInt();
Chris@269:         rect.haveFrames = false;
Chris@269:     }
Chris@273:     rect.startY = attributes.value("startY").toDouble();
Chris@273:     rect.endY = attributes.value("endY").toDouble();
Chris@273:     rect.pixrect = QRect(x0, 0, x1 - x0, 0);
Chris@269:     addMeasureRectToSet(rect);
Chris@269: }
Chris@269: 
Chris@269: QString
Chris@268: Layer::AddMeasurementRectCommand::getName() const
Chris@268: {
Chris@268:     return tr("Make Measurement");
Chris@268: }
Chris@268: 
Chris@268: void
Chris@268: Layer::AddMeasurementRectCommand::execute()
Chris@268: {
Chris@269:     m_layer->addMeasureRectToSet(m_rect);
Chris@268: }
Chris@268: 
Chris@268: void
Chris@268: Layer::AddMeasurementRectCommand::unexecute()
Chris@268: {
Chris@269:     m_layer->deleteMeasureRectFromSet(m_rect);
Chris@268: }
Chris@268: 
Chris@267: void
Chris@267: Layer::measureStart(View *v, QMouseEvent *e)
Chris@267: {
Chris@267:     m_draggingRect.pixrect = QRect(e->x(), e->y(), 0, 0);
Chris@267:     if (hasTimeXAxis()) {
Chris@268:         m_draggingRect.haveFrames = true;
Chris@267:         m_draggingRect.startFrame = v->getFrameForX(e->x());
Chris@267:         m_draggingRect.endFrame = m_draggingRect.startFrame;
Chris@268:     } else {
Chris@268:         m_draggingRect.haveFrames = false;
Chris@267:     }
Chris@273:     setMeasureRectYCoord(v, m_draggingRect, true, e->y());
Chris@267:     m_haveDraggingRect = true;
Chris@267: }
Chris@267: 
Chris@267: void
Chris@267: Layer::measureDrag(View *v, QMouseEvent *e)
Chris@267: {
Chris@267:     if (!m_haveDraggingRect) return;
Chris@268: 
Chris@267:     m_draggingRect.pixrect = QRect(m_draggingRect.pixrect.x(),
Chris@267:                                    m_draggingRect.pixrect.y(),
Chris@267:                                    e->x() - m_draggingRect.pixrect.x(),
Chris@274:                                    e->y() - m_draggingRect.pixrect.y());
Chris@268: 
Chris@273:     setMeasureRectYCoord(v, m_draggingRect, false, e->y());
Chris@273:     
Chris@267:     if (hasTimeXAxis()) {
Chris@267:         m_draggingRect.endFrame = v->getFrameForX(e->x());
Chris@267:     }
Chris@267: }
Chris@267: 
Chris@267: void
Chris@267: Layer::measureEnd(View *v, QMouseEvent *e)
Chris@267: {
Chris@267:     if (!m_haveDraggingRect) return;
Chris@267:     measureDrag(v, e);
Chris@268:     
Chris@268:     CommandHistory::getInstance()->addCommand
Chris@268:         (new AddMeasurementRectCommand(this, m_draggingRect));
Chris@268: 
Chris@267:     m_haveDraggingRect = false;
Chris@267: }
Chris@267: 
Chris@267: void
Chris@272: Layer::paintMeasurementRects(View *v, QPainter &paint,
Chris@272:                              bool showFocus, QPoint focusPoint) const
Chris@267: {
Chris@273:     updateMeasurePixrects(v);
Chris@272: 
Chris@272:     MeasureRectSet::const_iterator focusRectItr = m_measureRects.end();
Chris@272: 
Chris@267:     if (m_haveDraggingRect) {
Chris@272: 
Chris@270:         paintMeasurementRect(v, paint, m_draggingRect, true);
Chris@272: 
Chris@272:     } else if (showFocus) {
Chris@272: 
Chris@272:         focusRectItr = findFocusedMeasureRect(focusPoint);
Chris@267:     }
Chris@267: 
Chris@268:     for (MeasureRectSet::const_iterator i = m_measureRects.begin(); 
Chris@268:          i != m_measureRects.end(); ++i) {
Chris@272:         paintMeasurementRect(v, paint, *i, i == focusRectItr);
Chris@267:     }
Chris@267: }
Chris@267: 
Chris@272: bool
Chris@272: Layer::nearestMeasurementRectChanged(View *v, QPoint prev, QPoint now) const
Chris@272: {
Chris@273:     updateMeasurePixrects(v);
Chris@272:     
Chris@272:     MeasureRectSet::const_iterator i0 = findFocusedMeasureRect(prev);
Chris@272:     MeasureRectSet::const_iterator i1 = findFocusedMeasureRect(now);
Chris@272: 
Chris@272:     return (i0 != i1);
Chris@272: }
Chris@272: 
Chris@272: void
Chris@273: Layer::updateMeasurePixrects(View *v) const
Chris@272: {
Chris@272:     long sf = v->getStartFrame();
Chris@272:     long ef = v->getEndFrame();
Chris@272: 
Chris@272:     for (MeasureRectSet::const_iterator i = m_measureRects.begin(); 
Chris@272:          i != m_measureRects.end(); ++i) {
Chris@272: 
Chris@273:         // This logic depends on the fact that if one measure rect in
Chris@273:         // a layer has frame values, they all will.  That is in fact
Chris@273:         // the case, because haveFrames is based on whether the layer
Chris@273:         // hasTimeXAxis() or not.  Measure rect ordering in the rect
Chris@273:         // set wouldn't work correctly either, if haveFrames could
Chris@273:         // vary.
Chris@272: 
Chris@273:         if (i->haveFrames) {
Chris@273:             if (i->startFrame >= ef) break;
Chris@273:             if (i->endFrame <= sf) continue;
Chris@273:         }
Chris@272: 
Chris@273:         int x0 = i->pixrect.x();
Chris@273:         int x1 = x0 + i->pixrect.width();
Chris@273: 
Chris@273:         if (i->haveFrames) {
Chris@273:             if (i->startFrame >= v->getStartFrame()) {
Chris@273:                 x0 = v->getXForFrame(i->startFrame);
Chris@273:             }
Chris@273:             if (i->endFrame <= long(v->getEndFrame())) {
Chris@273:                 x1 = v->getXForFrame(i->endFrame);
Chris@273:             }
Chris@272:         }
Chris@272:         
Chris@273:         i->pixrect = QRect(x0, i->pixrect.y(), x1 - x0, i->pixrect.height());
Chris@273: 
Chris@273:         updateMeasureRectYCoords(v, *i);
Chris@273:     }
Chris@273: }
Chris@273: 
Chris@273: void
Chris@273: Layer::updateMeasureRectYCoords(View *v, const MeasureRect &r) const
Chris@273: {
Chris@273:     int y0 = lrint(r.startY * v->height());
Chris@273:     int y1 = lrint(r.endY * v->height());
Chris@273:     r.pixrect = QRect(r.pixrect.x(), y0, r.pixrect.width(), y1 - y0);
Chris@273: }
Chris@273: 
Chris@273: void
Chris@273: Layer::setMeasureRectYCoord(View *v, MeasureRect &r, bool start, int y) const
Chris@273: {
Chris@273:     if (start) {
Chris@273:         r.startY = double(y) / double(v->height());
Chris@273:         r.endY = r.startY;
Chris@273:     } else {
Chris@273:         r.endY = double(y) / double(v->height());
Chris@272:     }
Chris@272: }
Chris@272: 
Chris@272: Layer::MeasureRectSet::const_iterator
Chris@272: Layer::findFocusedMeasureRect(QPoint focusPoint) const
Chris@272: {
Chris@272:     float frDist = 0;
Chris@272:     MeasureRectSet::const_iterator focusRectItr = m_measureRects.end();
Chris@272: 
Chris@272:     for (MeasureRectSet::const_iterator i = m_measureRects.begin(); 
Chris@272:          i != m_measureRects.end(); ++i) {
Chris@272: 
Chris@272:         if (!i->pixrect.adjusted(-2, -2, 2, 2).contains(focusPoint)) continue;
Chris@272: 
Chris@272:         int cx = i->pixrect.x() + i->pixrect.width()/2;
Chris@272:         int cy = i->pixrect.y() + i->pixrect.height()/2;
Chris@272:         int xd = focusPoint.x() - cx;
Chris@272:         int yd = focusPoint.y() - cy;
Chris@272:         
Chris@272:         float d = sqrt(xd * xd + yd * yd);
Chris@272:         
Chris@272:         if (focusRectItr == m_measureRects.end() || d < frDist) {
Chris@272:             focusRectItr = i;
Chris@272:             frDist = d;
Chris@272:         }
Chris@272:     }
Chris@272: 
Chris@272:     return focusRectItr;
Chris@272: }
Chris@272: 
Chris@268: void
Chris@270: Layer::paintMeasurementRect(View *v, QPainter &paint,
Chris@270:                             const MeasureRect &r, bool focus) const
Chris@268: {
Chris@268:     if (r.haveFrames) {
Chris@268:         
Chris@268:         int x0 = -1;
Chris@268:         int x1 = v->width() + 1;
Chris@268:         
Chris@268:         if (r.startFrame >= v->getStartFrame()) {
Chris@268:             x0 = v->getXForFrame(r.startFrame);
Chris@268:         }
Chris@272:         if (r.endFrame <= long(v->getEndFrame())) {
Chris@268:             x1 = v->getXForFrame(r.endFrame);
Chris@268:         }
Chris@268:         
Chris@272:         QRect pr = QRect(x0, r.pixrect.y(), x1 - x0, r.pixrect.height());
Chris@268:         r.pixrect = pr;
Chris@268:     }
Chris@274: 
Chris@274:     v->drawMeasurementRect(paint, this, r.pixrect.normalized(), focus);
Chris@268: }
Chris@268: 
Chris@268: QString
Chris@268: Layer::toXmlString(QString indent, QString extraAttributes) const
Chris@268: {
Chris@268:     QString s;
Chris@268:     
Chris@268:     s += indent;
Chris@268: 
Chris@269:     s += QString("<layer id=\"%2\" type=\"%1\" name=\"%3\" model=\"%4\" %5")
Chris@268: 	.arg(encodeEntities(LayerFactory::getInstance()->getLayerTypeName
Chris@268:                             (LayerFactory::getInstance()->getLayerType(this))))
Chris@268: 	.arg(getObjectExportId(this))
Chris@268: 	.arg(encodeEntities(objectName()))
Chris@268: 	.arg(getObjectExportId(getModel()))
Chris@268: 	.arg(extraAttributes);
Chris@268: 
Chris@269:     if (m_measureRects.empty()) {
Chris@269:         s += QString("/>\n");
Chris@269:         return s;
Chris@269:     }
Chris@269: 
Chris@269:     s += QString(">\n");
Chris@269: 
Chris@269:     for (MeasureRectSet::const_iterator i = m_measureRects.begin();
Chris@269:          i != m_measureRects.end(); ++i) {
Chris@269:         s += i->toXmlString(indent + "  ");
Chris@269:     }
Chris@269: 
Chris@269:     s += QString("</layer>\n");
Chris@269: 
Chris@268:     return s;
Chris@268: }
Chris@269: 
Chris@269: QString
Chris@269: Layer::toBriefXmlString(QString indent, QString extraAttributes) const
Chris@269: {
Chris@269:     QString s;
Chris@269:     
Chris@269:     s += indent;
Chris@269: 
Chris@269:     s += QString("<layer id=\"%2\" type=\"%1\" name=\"%3\" model=\"%4\" %5/>\n")
Chris@269: 	.arg(encodeEntities(LayerFactory::getInstance()->getLayerTypeName
Chris@269:                             (LayerFactory::getInstance()->getLayerType(this))))
Chris@269: 	.arg(getObjectExportId(this))
Chris@269: 	.arg(encodeEntities(objectName()))
Chris@269: 	.arg(getObjectExportId(getModel()))
Chris@269:         .arg(extraAttributes);
Chris@269: 
Chris@269:     return s;
Chris@269: }
Chris@269: