view layer/TimeInstantLayer.cpp @ 590:241929c5d57c sonification

Check the scale width in the View (which has access to it); ask the layer to do something when the user clicks in the scale regardless of the edit mode, and continue with normal processing if the layer has nothing interesting to do

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#include "TimeInstantLayer.h"

#include "data/model/Model.h"
#include "base/RealTime.h"
#include "view/View.h"
#include "base/Profiler.h"
#include "base/Clipboard.h"
#include "ColourDatabase.h"

#include "data/model/SparseOneDimensionalModel.h"

#include "widgets/ItemEditDialog.h"
#include "widgets/ListInputDialog.h"

#include <QPainter>
#include <QMouseEvent>
#include <QTextStream>
#include <QMessageBox>

#include <iostream>
#include <cmath>

//#define DEBUG_TIME_INSTANT_LAYER 1

TimeInstantLayer::TimeInstantLayer() :
    SingleColourLayer(),
    m_model(0),
    m_editing(false),
    m_editingPoint(0, tr("New Point")),
    m_editingCommand(0),
    m_plotStyle(PlotInstants)
{
}

TimeInstantLayer::~TimeInstantLayer()
{
}

void
TimeInstantLayer::setModel(SparseOneDimensionalModel *model)
{
    if (m_model == model) return;
    m_model = model;

    connectSignals(m_model);

#ifdef DEBUG_TIME_INSTANT_LAYER
    SVDEBUG << "TimeInstantLayer::setModel(" << model << ")" << endl;
#endif

    if (m_model && m_model->getRDFTypeURI().endsWith("Segment")) {
        setPlotStyle(PlotSegmentation);
    }

    emit modelReplaced();
}

Layer::PropertyList
TimeInstantLayer::getProperties() const
{
    PropertyList list = SingleColourLayer::getProperties();
    list.push_back("Plot Type");
    return list;
}

QString
TimeInstantLayer::getPropertyLabel(const PropertyName &name) const
{
    if (name == "Plot Type") return tr("Plot Type");
    return SingleColourLayer::getPropertyLabel(name);
}

Layer::PropertyType
TimeInstantLayer::getPropertyType(const PropertyName &name) const
{
    if (name == "Plot Type") return ValueProperty;
    return SingleColourLayer::getPropertyType(name);
}

int
TimeInstantLayer::getPropertyRangeAndValue(const PropertyName &name,
                                           int *min, int *max, int *deflt) const
{
    int val = 0;

    if (name == "Plot Type") {
	
	if (min) *min = 0;
	if (max) *max = 1;
        if (deflt) *deflt = 0;
	
	val = int(m_plotStyle);

    } else {
	
	val = SingleColourLayer::getPropertyRangeAndValue(name, min, max, deflt);
    }

    return val;
}

QString
TimeInstantLayer::getPropertyValueLabel(const PropertyName &name,
                                        int value) const
{
    if (name == "Plot Type") {
	switch (value) {
	default:
	case 0: return tr("Instants");
	case 1: return tr("Segmentation");
	}
    }
    return SingleColourLayer::getPropertyValueLabel(name, value);
}

void
TimeInstantLayer::setProperty(const PropertyName &name, int value)
{
    if (name == "Plot Type") {
	setPlotStyle(PlotStyle(value));
    } else {
        SingleColourLayer::setProperty(name, value);
    }
}

void
TimeInstantLayer::setPlotStyle(PlotStyle style)
{
    if (m_plotStyle == style) return;
    m_plotStyle = style;
    emit layerParametersChanged();
}

bool
TimeInstantLayer::isLayerScrollable(const View *v) const
{
    QPoint discard;
    return !v->shouldIlluminateLocalFeatures(this, discard);
}

SparseOneDimensionalModel::PointList
TimeInstantLayer::getLocalPoints(View *v, int x) const
{
    // Return a set of points that all have the same frame number, the
    // nearest to the given x coordinate, and that are within a
    // certain fuzz distance of that x coordinate.

    if (!m_model) return SparseOneDimensionalModel::PointList();

    long frame = v->getFrameForX(x);

    SparseOneDimensionalModel::PointList onPoints =
	m_model->getPoints(frame);

    if (!onPoints.empty()) {
	return onPoints;
    }

    SparseOneDimensionalModel::PointList prevPoints =
	m_model->getPreviousPoints(frame);
    SparseOneDimensionalModel::PointList nextPoints =
	m_model->getNextPoints(frame);

    SparseOneDimensionalModel::PointList usePoints = prevPoints;

    if (prevPoints.empty()) {
	usePoints = nextPoints;
    } else if (long(prevPoints.begin()->frame) < v->getStartFrame() &&
	       !(nextPoints.begin()->frame > v->getEndFrame())) {
	usePoints = nextPoints;
    } else if (nextPoints.begin()->frame - frame <
	       frame - prevPoints.begin()->frame) {
	usePoints = nextPoints;
    }

    if (!usePoints.empty()) {
	int fuzz = 2;
	int px = v->getXForFrame(usePoints.begin()->frame);
	if ((px > x && px - x > fuzz) ||
	    (px < x && x - px > fuzz + 1)) {
	    usePoints.clear();
	}
    }

    return usePoints;
}

QString
TimeInstantLayer::getLabelPreceding(size_t frame) const
{
    if (!m_model) return "";
    SparseOneDimensionalModel::PointList points = m_model->getPreviousPoints(frame);
    for (SparseOneDimensionalModel::PointList::const_iterator i = points.begin();
         i != points.end(); ++i) {
        if (i->label != "") return i->label;
    }
    return "";
}

QString
TimeInstantLayer::getFeatureDescription(View *v, QPoint &pos) const
{
    int x = pos.x();

    if (!m_model || !m_model->getSampleRate()) return "";

    SparseOneDimensionalModel::PointList points = getLocalPoints(v, x);

    if (points.empty()) {
	if (!m_model->isReady()) {
	    return tr("In progress");
	} else {
	    return tr("No local points");
	}
    }

    long useFrame = points.begin()->frame;

    RealTime rt = RealTime::frame2RealTime(useFrame, m_model->getSampleRate());
    
    QString text;

    if (points.begin()->label == "") {
	text = QString(tr("Time:\t%1\nNo label"))
	    .arg(rt.toText(true).c_str());
    } else {
	text = QString(tr("Time:\t%1\nLabel:\t%2"))
	    .arg(rt.toText(true).c_str())
	    .arg(points.begin()->label);
    }

    pos = QPoint(v->getXForFrame(useFrame), pos.y());
    return text;
}

bool
TimeInstantLayer::snapToFeatureFrame(View *v, int &frame,
				     size_t &resolution,
				     SnapType snap) const
{
    if (!m_model) {
	return Layer::snapToFeatureFrame(v, frame, resolution, snap);
    }

    resolution = m_model->getResolution();
    SparseOneDimensionalModel::PointList points;

    if (snap == SnapNeighbouring) {
	
	points = getLocalPoints(v, v->getXForFrame(frame));
	if (points.empty()) return false;
	frame = points.begin()->frame;
	return true;
    }    

    points = m_model->getPoints(frame, frame);
    int snapped = frame;
    bool found = false;

    for (SparseOneDimensionalModel::PointList::const_iterator i = points.begin();
	 i != points.end(); ++i) {

	if (snap == SnapRight) {

	    if (i->frame >= frame) {
		snapped = i->frame;
		found = true;
		break;
	    }

	} else if (snap == SnapLeft) {

	    if (i->frame <= frame) {
		snapped = i->frame;
		found = true; // don't break, as the next may be better
	    } else {
		break;
	    }

	} else { // nearest

	    SparseOneDimensionalModel::PointList::const_iterator j = i;
	    ++j;

	    if (j == points.end()) {

		snapped = i->frame;
		found = true;
		break;

	    } else if (j->frame >= frame) {

		if (j->frame - frame < frame - i->frame) {
		    snapped = j->frame;
		} else {
		    snapped = i->frame;
		}
		found = true;
		break;
	    }
	}
    }

    frame = snapped;
    return found;
}

void
TimeInstantLayer::paint(View *v, QPainter &paint, QRect rect) const
{
    if (!m_model || !m_model->isOK()) return;

//    Profiler profiler("TimeInstantLayer::paint", true);

    int x0 = rect.left(), x1 = rect.right();

    long frame0 = v->getFrameForX(x0);
    long frame1 = v->getFrameForX(x1);

    SparseOneDimensionalModel::PointList points(m_model->getPoints
						(frame0, frame1));

    bool odd = false;
    if (m_plotStyle == PlotSegmentation && !points.empty()) {
	int index = m_model->getIndexOf(*points.begin());
	odd = ((index % 2) == 1);
    }

    paint.setPen(getBaseQColor());

    QColor brushColour(getBaseQColor());
    brushColour.setAlpha(100);
    paint.setBrush(brushColour);

    QColor oddBrushColour(brushColour);
    if (m_plotStyle == PlotSegmentation) {
	if (getBaseQColor() == Qt::black) {
	    oddBrushColour = Qt::gray;
	} else if (getBaseQColor() == Qt::darkRed) {
	    oddBrushColour = Qt::red;
	} else if (getBaseQColor() == Qt::darkBlue) {
	    oddBrushColour = Qt::blue;
	} else if (getBaseQColor() == Qt::darkGreen) {
	    oddBrushColour = Qt::green;
	} else {
	    oddBrushColour = oddBrushColour.light(150);
	}
	oddBrushColour.setAlpha(100);
    }

//    SVDEBUG << "TimeInstantLayer::paint: resolution is "
//	      << m_model->getResolution() << " frames" << endl;

    QPoint localPos;
    long illuminateFrame = -1;

    if (v->shouldIlluminateLocalFeatures(this, localPos)) {
	SparseOneDimensionalModel::PointList localPoints =
	    getLocalPoints(v, localPos.x());
	if (!localPoints.empty()) illuminateFrame = localPoints.begin()->frame;
    }
	
    int prevX = -1;
    int textY = v->getTextLabelHeight(this, paint);
    
    for (SparseOneDimensionalModel::PointList::const_iterator i = points.begin();
	 i != points.end(); ++i) {

	const SparseOneDimensionalModel::Point &p(*i);
	SparseOneDimensionalModel::PointList::const_iterator j = i;
	++j;

	int x = v->getXForFrame(p.frame);
        if (x == prevX && m_plotStyle == PlotInstants &&
            p.frame != illuminateFrame) continue;

	int iw = v->getXForFrame(p.frame + m_model->getResolution()) - x;
	if (iw < 2) {
	    if (iw < 1) {
		iw = 2;
		if (j != points.end()) {
		    int nx = v->getXForFrame(j->frame);
		    if (nx < x + 3) iw = 1;
		}
	    } else {
		iw = 2;
	    }
	}
		
	if (p.frame == illuminateFrame) {
	    paint.setPen(getForegroundQColor(v));
	} else {
	    paint.setPen(brushColour);
	}

	if (m_plotStyle == PlotInstants) {
	    if (iw > 1) {
		paint.drawRect(x, 0, iw - 1, v->height() - 1);
	    } else {
		paint.drawLine(x, 0, x, v->height() - 1);
	    }
	} else {

	    if (odd) paint.setBrush(oddBrushColour);
	    else paint.setBrush(brushColour);
	    
	    int nx;
	    
	    if (j != points.end()) {
		const SparseOneDimensionalModel::Point &q(*j);
		nx = v->getXForFrame(q.frame);
	    } else {
		nx = v->getXForFrame(m_model->getEndFrame());
	    }

	    if (nx >= x) {
		
		if (illuminateFrame != p.frame &&
		    (nx < x + 5 || x >= v->width() - 1)) {
		    paint.setPen(Qt::NoPen);
		}

                paint.drawRect(x, -1, nx - x, v->height() + 1);
	    }

	    odd = !odd;
	}

	paint.setPen(getBaseQColor());
	
	if (p.label != "") {

	    // only draw if there's enough room from here to the next point

	    int lw = paint.fontMetrics().width(p.label);
	    bool good = true;

	    if (j != points.end()) {
		int nx = v->getXForFrame(j->frame);
		if (nx >= x && nx - x - iw - 3 <= lw) good = false;
	    }

	    if (good) {
                v->drawVisibleText(paint, x + iw + 2, textY, p.label, View::OutlinedText);
//		paint.drawText(x + iw + 2, textY, p.label);
	    }
	}

	prevX = x;
    }
}

void
TimeInstantLayer::drawStart(View *v, QMouseEvent *e)
{
#ifdef DEBUG_TIME_INSTANT_LAYER
    SVDEBUG << "TimeInstantLayer::drawStart(" << e->x() << ")" << endl;
#endif

    if (!m_model) return;

    long frame = v->getFrameForX(e->x());
    if (frame < 0) frame = 0;
    frame = frame / m_model->getResolution() * m_model->getResolution();

    m_editingPoint = SparseOneDimensionalModel::Point(frame, tr("New Point"));

    if (m_editingCommand) finish(m_editingCommand);
    m_editingCommand = new SparseOneDimensionalModel::EditCommand(m_model,
								  tr("Draw Point"));
    m_editingCommand->addPoint(m_editingPoint);

    m_editing = true;
}

void
TimeInstantLayer::drawDrag(View *v, QMouseEvent *e)
{
#ifdef DEBUG_TIME_INSTANT_LAYER
    SVDEBUG << "TimeInstantLayer::drawDrag(" << e->x() << ")" << endl;
#endif

    if (!m_model || !m_editing) return;

    long frame = v->getFrameForX(e->x());
    if (frame < 0) frame = 0;
    frame = frame / m_model->getResolution() * m_model->getResolution();
    m_editingCommand->deletePoint(m_editingPoint);
    m_editingPoint.frame = frame;
    m_editingCommand->addPoint(m_editingPoint);
}

void
TimeInstantLayer::drawEnd(View *, QMouseEvent *e)
{
#ifdef DEBUG_TIME_INSTANT_LAYER
    SVDEBUG << "TimeInstantLayer::drawEnd(" << e->x() << ")" << endl;
#endif
    if (!m_model || !m_editing) return;
    QString newName = tr("Add Point at %1 s")
	.arg(RealTime::frame2RealTime(m_editingPoint.frame,
				      m_model->getSampleRate())
	     .toText(false).c_str());
    m_editingCommand->setName(newName);
    finish(m_editingCommand);
    m_editingCommand = 0;
    m_editing = false;
}

void
TimeInstantLayer::eraseStart(View *v, QMouseEvent *e)
{
    if (!m_model) return;

    SparseOneDimensionalModel::PointList points = getLocalPoints(v, e->x());
    if (points.empty()) return;

    m_editingPoint = *points.begin();

    if (m_editingCommand) {
	finish(m_editingCommand);
	m_editingCommand = 0;
    }

    m_editing = true;
}

void
TimeInstantLayer::eraseDrag(View *v, QMouseEvent *e)
{
}

void
TimeInstantLayer::eraseEnd(View *v, QMouseEvent *e)
{
    if (!m_model || !m_editing) return;

    m_editing = false;

    SparseOneDimensionalModel::PointList points = getLocalPoints(v, e->x());
    if (points.empty()) return;
    if (points.begin()->frame != m_editingPoint.frame) return;

    m_editingCommand = new SparseOneDimensionalModel::EditCommand
        (m_model, tr("Erase Point"));

    m_editingCommand->deletePoint(m_editingPoint);

    finish(m_editingCommand);
    m_editingCommand = 0;
    m_editing = false;
}

void
TimeInstantLayer::editStart(View *v, QMouseEvent *e)
{
#ifdef DEBUG_TIME_INSTANT_LAYER
    SVDEBUG << "TimeInstantLayer::editStart(" << e->x() << ")" << endl;
#endif

    if (!m_model) return;

    SparseOneDimensionalModel::PointList points = getLocalPoints(v, e->x());
    if (points.empty()) return;

    m_editingPoint = *points.begin();

    if (m_editingCommand) {
	finish(m_editingCommand);
	m_editingCommand = 0;
    }

    m_editing = true;
}

void
TimeInstantLayer::editDrag(View *v, QMouseEvent *e)
{
#ifdef DEBUG_TIME_INSTANT_LAYER
    SVDEBUG << "TimeInstantLayer::editDrag(" << e->x() << ")" << endl;
#endif

    if (!m_model || !m_editing) return;

    long frame = v->getFrameForX(e->x());
    if (frame < 0) frame = 0;
    frame = frame / m_model->getResolution() * m_model->getResolution();

    if (!m_editingCommand) {
	m_editingCommand = new SparseOneDimensionalModel::EditCommand(m_model,
								      tr("Drag Point"));
    }

    m_editingCommand->deletePoint(m_editingPoint);
    m_editingPoint.frame = frame;
    m_editingCommand->addPoint(m_editingPoint);
}

void
TimeInstantLayer::editEnd(View *, QMouseEvent *e)
{
#ifdef DEBUG_TIME_INSTANT_LAYER
    SVDEBUG << "TimeInstantLayer::editEnd(" << e->x() << ")" << endl;
#endif
    if (!m_model || !m_editing) return;
    if (m_editingCommand) {
	QString newName = tr("Move Point to %1 s")
	    .arg(RealTime::frame2RealTime(m_editingPoint.frame,
					  m_model->getSampleRate())
		 .toText(false).c_str());
	m_editingCommand->setName(newName);
	finish(m_editingCommand);
    }
    m_editingCommand = 0;
    m_editing = false;
}

bool
TimeInstantLayer::editOpen(View *v, QMouseEvent *e)
{
    if (!m_model) return false;

    SparseOneDimensionalModel::PointList points = getLocalPoints(v, e->x());
    if (points.empty()) return false;

    SparseOneDimensionalModel::Point point = *points.begin();

    ItemEditDialog *dialog = new ItemEditDialog
        (m_model->getSampleRate(),
         ItemEditDialog::ShowTime |
         ItemEditDialog::ShowText);

    dialog->setFrameTime(point.frame);
    dialog->setText(point.label);

    if (dialog->exec() == QDialog::Accepted) {

        SparseOneDimensionalModel::Point newPoint = point;
        newPoint.frame = dialog->getFrameTime();
        newPoint.label = dialog->getText();
        
        SparseOneDimensionalModel::EditCommand *command =
            new SparseOneDimensionalModel::EditCommand(m_model, tr("Edit Point"));
        command->deletePoint(point);
        command->addPoint(newPoint);
        finish(command);
    }

    delete dialog;
    return true;
}

void
TimeInstantLayer::moveSelection(Selection s, size_t newStartFrame)
{
    if (!m_model) return;

    SparseOneDimensionalModel::EditCommand *command =
	new SparseOneDimensionalModel::EditCommand(m_model,
						   tr("Drag Selection"));

    SparseOneDimensionalModel::PointList points =
	m_model->getPoints(s.getStartFrame(), s.getEndFrame());

    for (SparseOneDimensionalModel::PointList::iterator i = points.begin();
	 i != points.end(); ++i) {

	if (s.contains(i->frame)) {
	    SparseOneDimensionalModel::Point newPoint(*i);
	    newPoint.frame = i->frame + newStartFrame - s.getStartFrame();
	    command->deletePoint(*i);
	    command->addPoint(newPoint);
	}
    }

    finish(command);
}

void
TimeInstantLayer::resizeSelection(Selection s, Selection newSize)
{
    if (!m_model) return;

    SparseOneDimensionalModel::EditCommand *command =
	new SparseOneDimensionalModel::EditCommand(m_model,
						   tr("Resize Selection"));

    SparseOneDimensionalModel::PointList points =
	m_model->getPoints(s.getStartFrame(), s.getEndFrame());

    double ratio =
	double(newSize.getEndFrame() - newSize.getStartFrame()) /
	double(s.getEndFrame() - s.getStartFrame());

    for (SparseOneDimensionalModel::PointList::iterator i = points.begin();
	 i != points.end(); ++i) {

	if (s.contains(i->frame)) {

	    double target = i->frame;
	    target = newSize.getStartFrame() + 
		double(target - s.getStartFrame()) * ratio;

	    SparseOneDimensionalModel::Point newPoint(*i);
	    newPoint.frame = lrint(target);
	    command->deletePoint(*i);
	    command->addPoint(newPoint);
	}
    }

    finish(command);
}

void
TimeInstantLayer::deleteSelection(Selection s)
{
    if (!m_model) return;

    SparseOneDimensionalModel::EditCommand *command =
	new SparseOneDimensionalModel::EditCommand(m_model,
						   tr("Delete Selection"));

    SparseOneDimensionalModel::PointList points =
	m_model->getPoints(s.getStartFrame(), s.getEndFrame());

    for (SparseOneDimensionalModel::PointList::iterator i = points.begin();
	 i != points.end(); ++i) {
	if (s.contains(i->frame)) command->deletePoint(*i);
    }

    finish(command);
}

void
TimeInstantLayer::copy(View *v, Selection s, Clipboard &to)
{
    if (!m_model) return;

    SparseOneDimensionalModel::PointList points =
	m_model->getPoints(s.getStartFrame(), s.getEndFrame());

    for (SparseOneDimensionalModel::PointList::iterator i = points.begin();
	 i != points.end(); ++i) {
	if (s.contains(i->frame)) {
            Clipboard::Point point(i->frame, i->label);
            point.setReferenceFrame(alignToReference(v, i->frame));
            to.addPoint(point);
        }
    }
}

bool
TimeInstantLayer::paste(View *v, const Clipboard &from, int frameOffset, bool)
{
    if (!m_model) return false;

    const Clipboard::PointList &points = from.getPoints();

    bool realign = false;

    if (clipboardHasDifferentAlignment(v, from)) {

        QMessageBox::StandardButton button =
            QMessageBox::question(v, tr("Re-align pasted instants?"),
                                  tr("The instants you are pasting came from a layer with different source material from this one.  Do you want to re-align them in time, to match the source material for this layer?"),
                                  QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel,
                                  QMessageBox::Yes);

        if (button == QMessageBox::Cancel) {
            return false;
        }

        if (button == QMessageBox::Yes) {
            realign = true;
        }
    }

    SparseOneDimensionalModel::EditCommand *command =
	new SparseOneDimensionalModel::EditCommand(m_model, tr("Paste"));

    for (Clipboard::PointList::const_iterator i = points.begin();
         i != points.end(); ++i) {
        
        if (!i->haveFrame()) continue;

        size_t frame = 0;

        if (!realign) {
            
            frame = i->getFrame();

        } else {

            if (i->haveReferenceFrame()) {
                frame = i->getReferenceFrame();
                frame = alignFromReference(v, frame);
            } else {
                frame = i->getFrame();
            }
        }

        if (frameOffset > 0) frame += frameOffset;
        else if (frameOffset < 0) {
            if (frame > -frameOffset) frame += frameOffset;
            else frame = 0;
        }

        SparseOneDimensionalModel::Point newPoint(frame);
        if (i->haveLabel()) {
            newPoint.label = i->getLabel();
        } else if (i->haveValue()) {
            newPoint.label = QString("%1").arg(i->getValue());
        }
        
        command->addPoint(newPoint);
    }

    finish(command);
    return true;
}

int
TimeInstantLayer::getDefaultColourHint(bool darkbg, bool &impose)
{
    impose = false;
    return ColourDatabase::getInstance()->getColourIndex
        (QString(darkbg ? "Bright Purple" : "Purple"));
}

void
TimeInstantLayer::toXml(QTextStream &stream,
                        QString indent, QString extraAttributes) const
{
    SingleColourLayer::toXml(stream, indent,
                             extraAttributes +
                             QString(" plotStyle=\"%1\"")
                             .arg(m_plotStyle));
}

void
TimeInstantLayer::setProperties(const QXmlAttributes &attributes)
{
    SingleColourLayer::setProperties(attributes);

    bool ok;
    PlotStyle style = (PlotStyle)
	attributes.value("plotStyle").toInt(&ok);
    if (ok) setPlotStyle(style);
}