Chris@35: /* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
Chris@35: 
Chris@35: /*
Chris@35:     A waveform viewer and audio annotation editor.
Chris@35:     Chris Cannam, Queen Mary University of London, 2005-2006
Chris@35:     
Chris@35:     This is experimental software.  Not for distribution.
Chris@35: */
Chris@35: 
Chris@35: #include "TextLayer.h"
Chris@35: 
Chris@35: #include "base/Model.h"
Chris@35: #include "base/RealTime.h"
Chris@35: #include "base/Profiler.h"
Chris@35: #include "base/View.h"
Chris@35: 
Chris@35: #include "model/TextModel.h"
Chris@35: 
Chris@35: #include <QPainter>
Chris@35: #include <QMouseEvent>
Chris@36: #include <QInputDialog>
Chris@35: 
Chris@35: #include <iostream>
Chris@35: #include <cmath>
Chris@35: 
Chris@35: TextLayer::TextLayer(View *w) :
Chris@35:     Layer(w),
Chris@35:     m_model(0),
Chris@35:     m_editing(false),
Chris@35:     m_originalPoint(0, 0.0, tr("Empty Label")),
Chris@35:     m_editingPoint(0, 0.0, tr("Empty Label")),
Chris@35:     m_editingCommand(0),
Chris@35:     m_colour(255, 150, 50) // orange
Chris@35: {
Chris@35:     m_view->addLayer(this);
Chris@35: }
Chris@35: 
Chris@35: void
Chris@35: TextLayer::setModel(TextModel *model)
Chris@35: {
Chris@35:     if (m_model == model) return;
Chris@35:     m_model = model;
Chris@35: 
Chris@35:     connect(m_model, SIGNAL(modelChanged()), this, SIGNAL(modelChanged()));
Chris@35:     connect(m_model, SIGNAL(modelChanged(size_t, size_t)),
Chris@35: 	    this, SIGNAL(modelChanged(size_t, size_t)));
Chris@35: 
Chris@35:     connect(m_model, SIGNAL(completionChanged()),
Chris@35: 	    this, SIGNAL(modelCompletionChanged()));
Chris@35: 
Chris@36: //    std::cerr << "TextLayer::setModel(" << model << ")" << std::endl;
Chris@35: 
Chris@35:     emit modelReplaced();
Chris@35: }
Chris@35: 
Chris@35: Layer::PropertyList
Chris@35: TextLayer::getProperties() const
Chris@35: {
Chris@35:     PropertyList list;
Chris@35:     list.push_back(tr("Colour"));
Chris@35:     return list;
Chris@35: }
Chris@35: 
Chris@35: Layer::PropertyType
Chris@35: TextLayer::getPropertyType(const PropertyName &name) const
Chris@35: {
Chris@35:     return ValueProperty;
Chris@35: }
Chris@35: 
Chris@35: int
Chris@35: TextLayer::getPropertyRangeAndValue(const PropertyName &name,
Chris@35: 				    int *min, int *max) const
Chris@35: {
Chris@35:     //!!! factor this colour handling stuff out into a colour manager class
Chris@35: 
Chris@35:     int deft = 0;
Chris@35: 
Chris@35:     if (name == tr("Colour")) {
Chris@35: 
Chris@35: 	if (min) *min = 0;
Chris@35: 	if (max) *max = 5;
Chris@35: 
Chris@35: 	if (m_colour == Qt::black) deft = 0;
Chris@35: 	else if (m_colour == Qt::darkRed) deft = 1;
Chris@35: 	else if (m_colour == Qt::darkBlue) deft = 2;
Chris@35: 	else if (m_colour == Qt::darkGreen) deft = 3;
Chris@35: 	else if (m_colour == QColor(200, 50, 255)) deft = 4;
Chris@35: 	else if (m_colour == QColor(255, 150, 50)) deft = 5;
Chris@35: 
Chris@35:     } else {
Chris@35: 	
Chris@35: 	deft = Layer::getPropertyRangeAndValue(name, min, max);
Chris@35:     }
Chris@35: 
Chris@35:     return deft;
Chris@35: }
Chris@35: 
Chris@35: QString
Chris@35: TextLayer::getPropertyValueLabel(const PropertyName &name,
Chris@35: 				 int value) const
Chris@35: {
Chris@35:     if (name == tr("Colour")) {
Chris@35: 	switch (value) {
Chris@35: 	default:
Chris@35: 	case 0: return tr("Black");
Chris@35: 	case 1: return tr("Red");
Chris@35: 	case 2: return tr("Blue");
Chris@35: 	case 3: return tr("Green");
Chris@35: 	case 4: return tr("Purple");
Chris@35: 	case 5: return tr("Orange");
Chris@35: 	}
Chris@35:     }
Chris@35:     return tr("<unknown>");
Chris@35: }
Chris@35: 
Chris@35: void
Chris@35: TextLayer::setProperty(const PropertyName &name, int value)
Chris@35: {
Chris@35:     if (name == tr("Colour")) {
Chris@35: 	switch (value) {
Chris@35: 	default:
Chris@35: 	case 0:	setBaseColour(Qt::black); break;
Chris@35: 	case 1: setBaseColour(Qt::darkRed); break;
Chris@35: 	case 2: setBaseColour(Qt::darkBlue); break;
Chris@35: 	case 3: setBaseColour(Qt::darkGreen); break;
Chris@35: 	case 4: setBaseColour(QColor(200, 50, 255)); break;
Chris@35: 	case 5: setBaseColour(QColor(255, 150, 50)); break;
Chris@35: 	}
Chris@35:     }
Chris@35: }
Chris@35: 
Chris@35: void
Chris@35: TextLayer::setBaseColour(QColor colour)
Chris@35: {
Chris@35:     if (m_colour == colour) return;
Chris@35:     m_colour = colour;
Chris@35:     emit layerParametersChanged();
Chris@35: }
Chris@35: 
Chris@35: bool
Chris@35: TextLayer::isLayerScrollable() const
Chris@35: {
Chris@35:     QPoint discard;
Chris@35:     return !m_view->shouldIlluminateLocalFeatures(this, discard);
Chris@35: }
Chris@35: 
Chris@35: 
Chris@35: TextModel::PointList
Chris@35: TextLayer::getLocalPoints(int x, int y) const
Chris@35: {
Chris@35:     if (!m_model) return TextModel::PointList();
Chris@35: 
Chris@35:     long frame0 = getFrameForX(-150);
Chris@35:     long frame1 = getFrameForX(m_view->width() + 150);
Chris@35:     
Chris@35:     TextModel::PointList points(m_model->getPoints(frame0, frame1));
Chris@35: 
Chris@35:     TextModel::PointList rv;
Chris@35:     QFontMetrics metrics = QPainter().fontMetrics();
Chris@35: 
Chris@35:     for (TextModel::PointList::iterator i = points.begin();
Chris@35: 	 i != points.end(); ++i) {
Chris@35: 
Chris@35: 	const TextModel::Point &p(*i);
Chris@35: 
Chris@35: 	int px = getXForFrame(p.frame);
Chris@35: 	int py = getYForHeight(p.height);
Chris@35: 
Chris@35: 	QString label = p.label;
Chris@35: 	if (label == "") {
Chris@35: 	    label = tr("<no text>");
Chris@35: 	}
Chris@35: 
Chris@35: 	QRect rect = metrics.boundingRect
Chris@35: 	    (QRect(0, 0, 150, 200),
Chris@35: 	     Qt::AlignLeft | Qt::AlignTop | Qt::TextWordWrap, label);
Chris@35: 
Chris@35: 	if (py + rect.height() > m_view->height()) {
Chris@35: 	    if (rect.height() > m_view->height()) py = 0;
Chris@35: 	    else py = m_view->height() - rect.height() - 1;
Chris@35: 	}
Chris@35: 
Chris@35: 	if (x >= px && x < px + rect.width() &&
Chris@35: 	    y >= py && y < py + rect.height()) {
Chris@35: 	    rv.insert(p);
Chris@35: 	}
Chris@35:     }
Chris@35: 
Chris@35:     return rv;
Chris@35: }
Chris@35: 
Chris@35: QString
Chris@35: TextLayer::getFeatureDescription(QPoint &pos) const
Chris@35: {
Chris@35:     int x = pos.x();
Chris@35: 
Chris@35:     if (!m_model || !m_model->getSampleRate()) return "";
Chris@35: 
Chris@35:     TextModel::PointList points = getLocalPoints(x, pos.y());
Chris@35: 
Chris@35:     if (points.empty()) {
Chris@35: 	if (!m_model->isReady()) {
Chris@35: 	    return tr("In progress");
Chris@35: 	} else {
Chris@35: 	    return "";
Chris@35: 	}
Chris@35:     }
Chris@35: 
Chris@35:     long useFrame = points.begin()->frame;
Chris@35: 
Chris@35:     RealTime rt = RealTime::frame2RealTime(useFrame, m_model->getSampleRate());
Chris@35:     
Chris@35:     QString text;
Chris@35: 
Chris@35:     if (points.begin()->label == "") {
Chris@35: 	text = QString(tr("Time:\t%1\nHeight:\t%2\nLabel:\t%3"))
Chris@35: 	    .arg(rt.toText(true).c_str())
Chris@35: 	    .arg(points.begin()->height)
Chris@35: 	    .arg(points.begin()->label);
Chris@35:     }
Chris@35: 
Chris@35:     pos = QPoint(getXForFrame(useFrame), getYForHeight(points.begin()->height));
Chris@35:     return text;
Chris@35: }
Chris@35: 
Chris@35: 
Chris@35: //!!! too much overlap with TimeValueLayer/TimeInstantLayer
Chris@35: 
Chris@35: bool
Chris@35: TextLayer::snapToFeatureFrame(int &frame,
Chris@35: 			      size_t &resolution,
Chris@35: 			      SnapType snap) const
Chris@35: {
Chris@35:     if (!m_model) {
Chris@35: 	return Layer::snapToFeatureFrame(frame, resolution, snap);
Chris@35:     }
Chris@35: 
Chris@35:     resolution = m_model->getResolution();
Chris@35:     TextModel::PointList points;
Chris@35: 
Chris@35:     if (snap == SnapNeighbouring) {
Chris@35: 	
Chris@35: 	points = getLocalPoints(getXForFrame(frame), -1);
Chris@35: 	if (points.empty()) return false;
Chris@35: 	frame = points.begin()->frame;
Chris@35: 	return true;
Chris@35:     }    
Chris@35: 
Chris@35:     points = m_model->getPoints(frame, frame);
Chris@35:     int snapped = frame;
Chris@35:     bool found = false;
Chris@35: 
Chris@35:     for (TextModel::PointList::const_iterator i = points.begin();
Chris@35: 	 i != points.end(); ++i) {
Chris@35: 
Chris@35: 	if (snap == SnapRight) {
Chris@35: 
Chris@35: 	    if (i->frame > frame) {
Chris@35: 		snapped = i->frame;
Chris@35: 		found = true;
Chris@35: 		break;
Chris@35: 	    }
Chris@35: 
Chris@35: 	} else if (snap == SnapLeft) {
Chris@35: 
Chris@35: 	    if (i->frame <= frame) {
Chris@35: 		snapped = i->frame;
Chris@35: 		found = true; // don't break, as the next may be better
Chris@35: 	    } else {
Chris@35: 		break;
Chris@35: 	    }
Chris@35: 
Chris@35: 	} else { // nearest
Chris@35: 
Chris@35: 	    TextModel::PointList::const_iterator j = i;
Chris@35: 	    ++j;
Chris@35: 
Chris@35: 	    if (j == points.end()) {
Chris@35: 
Chris@35: 		snapped = i->frame;
Chris@35: 		found = true;
Chris@35: 		break;
Chris@35: 
Chris@35: 	    } else if (j->frame >= frame) {
Chris@35: 
Chris@35: 		if (j->frame - frame < frame - i->frame) {
Chris@35: 		    snapped = j->frame;
Chris@35: 		} else {
Chris@35: 		    snapped = i->frame;
Chris@35: 		}
Chris@35: 		found = true;
Chris@35: 		break;
Chris@35: 	    }
Chris@35: 	}
Chris@35:     }
Chris@35: 
Chris@35:     frame = snapped;
Chris@35:     return found;
Chris@35: }
Chris@35: 
Chris@35: int
Chris@35: TextLayer::getYForHeight(float height) const
Chris@35: {
Chris@35:     int h = m_view->height();
Chris@35:     return h - int(height * h);
Chris@35: }
Chris@35: 
Chris@35: float
Chris@35: TextLayer::getHeightForY(int y) const
Chris@35: {
Chris@35:     int h = m_view->height();
Chris@35:     return float(h - y) / h;
Chris@35: }
Chris@35: 
Chris@35: void
Chris@35: TextLayer::paint(QPainter &paint, QRect rect) const
Chris@35: {
Chris@35:     if (!m_model || !m_model->isOK()) return;
Chris@35: 
Chris@35:     int sampleRate = m_model->getSampleRate();
Chris@35:     if (!sampleRate) return;
Chris@35: 
Chris@35: //    Profiler profiler("TextLayer::paint", true);
Chris@35: 
Chris@35:     int x0 = rect.left(), x1 = rect.right();
Chris@35:     long frame0 = getFrameForX(x0);
Chris@35:     long frame1 = getFrameForX(x1);
Chris@35: 
Chris@35:     TextModel::PointList points(m_model->getPoints(frame0, frame1));
Chris@35:     if (points.empty()) return;
Chris@35: 
Chris@35:     QColor brushColour(m_colour);
Chris@35: 
Chris@36:     int h, s, v;
Chris@36:     brushColour.getHsv(&h, &s, &v);
Chris@36:     brushColour.setHsv(h, s, 255, 100);
Chris@36: 
Chris@36:     QColor penColour;
Chris@35:     if (m_view->hasLightBackground()) {
Chris@36: 	penColour = Qt::black;
Chris@35:     } else {
Chris@36: 	penColour = Qt::white;
Chris@35:     }
Chris@35: 
Chris@35: //    std::cerr << "TextLayer::paint: resolution is "
Chris@35: //	      << m_model->getResolution() << " frames" << std::endl;
Chris@35: 
Chris@35:     QPoint localPos;
Chris@35:     long illuminateFrame = -1;
Chris@35: 
Chris@35:     if (m_view->shouldIlluminateLocalFeatures(this, localPos)) {
Chris@35: 	TextModel::PointList localPoints = getLocalPoints(localPos.x(),
Chris@35: 							  localPos.y());
Chris@35: 	if (!localPoints.empty()) illuminateFrame = localPoints.begin()->frame;
Chris@35:     }
Chris@35: 
Chris@35:     int boxMaxWidth = 150;
Chris@35:     int boxMaxHeight = 200;
Chris@35: 
Chris@35:     paint.save();
Chris@35:     paint.setClipRect(rect.x(), 0, rect.width() + boxMaxWidth, m_view->height());
Chris@35:     
Chris@35:     for (TextModel::PointList::const_iterator i = points.begin();
Chris@35: 	 i != points.end(); ++i) {
Chris@35: 
Chris@35: 	const TextModel::Point &p(*i);
Chris@35: 
Chris@35: 	int x = getXForFrame(p.frame);
Chris@35: 	int y = getYForHeight(p.height);
Chris@35: 
Chris@35: 	if (illuminateFrame == p.frame) {
Chris@36: 	    paint.setBrush(penColour);
Chris@36: 	    if (m_view->hasLightBackground()) {
Chris@36: 		paint.setPen(Qt::white);
Chris@36: 	    } else {
Chris@36: 		paint.setPen(Qt::black);
Chris@36: 	    }
Chris@36: 	} else {
Chris@36: 	    paint.setPen(penColour);
Chris@36: 	    paint.setBrush(brushColour);
Chris@35: 	}
Chris@35: 
Chris@35: 	QString label = p.label;
Chris@35: 	if (label == "") {
Chris@35: 	    label = tr("<no text>");
Chris@35: 	}
Chris@35: 
Chris@35: 	QRect boxRect = paint.fontMetrics().boundingRect
Chris@35: 	    (QRect(0, 0, boxMaxWidth, boxMaxHeight),
Chris@35: 	     Qt::AlignLeft | Qt::AlignTop | Qt::TextWordWrap, label);
Chris@35: 
Chris@35: 	QRect textRect = QRect(3, 2, boxRect.width(), boxRect.height());
Chris@35: 	boxRect = QRect(0, 0, boxRect.width() + 6, boxRect.height() + 2);
Chris@35: 
Chris@35: 	if (y + boxRect.height() > m_view->height()) {
Chris@35: 	    if (boxRect.height() > m_view->height()) y = 0;
Chris@35: 	    else y = m_view->height() - boxRect.height() - 1;
Chris@35: 	}
Chris@35: 
Chris@35: 	boxRect = QRect(x, y, boxRect.width(), boxRect.height());
Chris@35: 	textRect = QRect(x + 3, y + 2, textRect.width(), textRect.height());
Chris@35: 
Chris@35: //	boxRect = QRect(x, y, boxRect.width(), boxRect.height());
Chris@35: //	textRect = QRect(x + 3, y + 2, textRect.width(), textRect.height());
Chris@35: 
Chris@35: 	paint.setRenderHint(QPainter::Antialiasing, false);
Chris@35: 	paint.drawRect(boxRect);
Chris@35: 
Chris@35: 	paint.setRenderHint(QPainter::Antialiasing, true);
Chris@35: 	paint.drawText(textRect,
Chris@35: 		       Qt::AlignLeft | Qt::AlignTop | Qt::TextWordWrap,
Chris@35: 		       label);
Chris@35: 
Chris@35: ///	if (p.label != "") {
Chris@35: ///	    paint.drawText(x + 5, y - paint.fontMetrics().height() + paint.fontMetrics().ascent(), p.label);
Chris@35: ///	}
Chris@35:     }
Chris@35: 
Chris@35:     paint.restore();
Chris@35: 
Chris@35:     // looks like save/restore doesn't deal with this:
Chris@35:     paint.setRenderHint(QPainter::Antialiasing, false);
Chris@35: }
Chris@35: 
Chris@35: void
Chris@35: TextLayer::drawStart(QMouseEvent *e)
Chris@35: {
Chris@36: //    std::cerr << "TextLayer::drawStart(" << e->x() << "," << e->y() << ")" << std::endl;
Chris@35: 
Chris@35:     if (!m_model) {
Chris@35: 	std::cerr << "TextLayer::drawStart: no model" << std::endl;
Chris@35: 	return;
Chris@35:     }
Chris@35: 
Chris@35:     long frame = getFrameForX(e->x());
Chris@35:     if (frame < 0) frame = 0;
Chris@35:     frame = frame / m_model->getResolution() * m_model->getResolution();
Chris@35: 
Chris@35:     float height = getHeightForY(e->y());
Chris@35: 
Chris@35:     m_editingPoint = TextModel::Point(frame, height, "");
Chris@35:     m_originalPoint = m_editingPoint;
Chris@35: 
Chris@35:     if (m_editingCommand) m_editingCommand->finish();
Chris@35:     m_editingCommand = new TextModel::EditCommand(m_model, "Add Label");
Chris@35:     m_editingCommand->addPoint(m_editingPoint);
Chris@35: 
Chris@35:     m_editing = true;
Chris@35: }
Chris@35: 
Chris@35: void
Chris@35: TextLayer::drawDrag(QMouseEvent *e)
Chris@35: {
Chris@36: //    std::cerr << "TextLayer::drawDrag(" << e->x() << "," << e->y() << ")" << std::endl;
Chris@35: 
Chris@35:     if (!m_model || !m_editing) return;
Chris@35: 
Chris@35:     long frame = getFrameForX(e->x());
Chris@35:     if (frame < 0) frame = 0;
Chris@35:     frame = frame / m_model->getResolution() * m_model->getResolution();
Chris@35: 
Chris@35:     float height = getHeightForY(e->y());
Chris@35: 
Chris@35:     m_editingCommand->deletePoint(m_editingPoint);
Chris@35:     m_editingPoint.frame = frame;
Chris@35:     m_editingPoint.height = height;
Chris@35:     m_editingCommand->addPoint(m_editingPoint);
Chris@35: }
Chris@35: 
Chris@35: void
Chris@35: TextLayer::drawEnd(QMouseEvent *e)
Chris@35: {
Chris@36: //    std::cerr << "TextLayer::drawEnd(" << e->x() << "," << e->y() << ")" << std::endl;
Chris@35:     if (!m_model || !m_editing) return;
Chris@36: 
Chris@36:     bool ok = false;
Chris@36:     QString label = QInputDialog::getText(m_view, tr("Enter label"),
Chris@36: 					  tr("Please enter a new label:"),
Chris@36: 					  QLineEdit::Normal, "", &ok);
Chris@36: 
Chris@36:     if (ok) {
Chris@36: 	TextModel::RelabelCommand *command =
Chris@36: 	    new TextModel::RelabelCommand(m_model, m_editingPoint, label);
Chris@36: 	m_editingCommand->addCommand(command);
Chris@36:     }
Chris@36: 
Chris@35:     m_editingCommand->finish();
Chris@35:     m_editingCommand = 0;
Chris@35:     m_editing = false;
Chris@35: }
Chris@35: 
Chris@35: void
Chris@35: TextLayer::editStart(QMouseEvent *e)
Chris@35: {
Chris@36: //    std::cerr << "TextLayer::editStart(" << e->x() << "," << e->y() << ")" << std::endl;
Chris@35: 
Chris@35:     if (!m_model) return;
Chris@35: 
Chris@35:     TextModel::PointList points = getLocalPoints(e->x(), e->y());
Chris@35:     if (points.empty()) return;
Chris@35: 
Chris@36:     m_editOrigin = e->pos();
Chris@35:     m_editingPoint = *points.begin();
Chris@35:     m_originalPoint = m_editingPoint;
Chris@35: 
Chris@35:     if (m_editingCommand) {
Chris@35: 	m_editingCommand->finish();
Chris@35: 	m_editingCommand = 0;
Chris@35:     }
Chris@35: 
Chris@35:     m_editing = true;
Chris@35: }
Chris@35: 
Chris@35: void
Chris@35: TextLayer::editDrag(QMouseEvent *e)
Chris@35: {
Chris@35:     if (!m_model || !m_editing) return;
Chris@35: 
Chris@36:     long frameDiff = getFrameForX(e->x()) - getFrameForX(m_editOrigin.x());
Chris@36:     float heightDiff = getHeightForY(e->y()) - getHeightForY(m_editOrigin.y());
Chris@36: 
Chris@36:     long frame = m_originalPoint.frame + frameDiff;
Chris@36:     float height = m_originalPoint.height + heightDiff;
Chris@36: 
Chris@36: //    long frame = getFrameForX(e->x());
Chris@35:     if (frame < 0) frame = 0;
Chris@36:     frame = (frame / m_model->getResolution()) * m_model->getResolution();
Chris@35: 
Chris@36: //    float height = getHeightForY(e->y());
Chris@35: 
Chris@35:     if (!m_editingCommand) {
Chris@35: 	m_editingCommand = new TextModel::EditCommand(m_model, tr("Drag Label"));
Chris@35:     }
Chris@35: 
Chris@35:     m_editingCommand->deletePoint(m_editingPoint);
Chris@35:     m_editingPoint.frame = frame;
Chris@35:     m_editingPoint.height = height;
Chris@35:     m_editingCommand->addPoint(m_editingPoint);
Chris@35: }
Chris@35: 
Chris@35: void
Chris@35: TextLayer::editEnd(QMouseEvent *e)
Chris@35: {
Chris@36: //    std::cerr << "TextLayer::editEnd(" << e->x() << "," << e->y() << ")" << std::endl;
Chris@35:     if (!m_model || !m_editing) return;
Chris@35: 
Chris@35:     if (m_editingCommand) {
Chris@35: 
Chris@35: 	QString newName = m_editingCommand->getName();
Chris@35: 
Chris@35: 	if (m_editingPoint.frame != m_originalPoint.frame) {
Chris@35: 	    if (m_editingPoint.height != m_originalPoint.height) {
Chris@35: 		newName = tr("Move Label");
Chris@35: 	    } else {
Chris@36: 		newName = tr("Move Label Horizontally");
Chris@35: 	    }
Chris@35: 	} else {
Chris@36: 	    newName = tr("Move Label Vertically");
Chris@35: 	}
Chris@35: 
Chris@35: 	m_editingCommand->setName(newName);
Chris@35: 	m_editingCommand->finish();
Chris@35:     }
Chris@35:     
Chris@35:     m_editingCommand = 0;
Chris@35:     m_editing = false;
Chris@35: }
Chris@35: 
Chris@36: void
Chris@36: TextLayer::editOpen(QMouseEvent *e)
Chris@36: {
Chris@36:     std::cerr << "TextLayer::editOpen" << std::endl;
Chris@36: 
Chris@36:     if (!m_model) return;
Chris@36: 
Chris@36:     TextModel::PointList points = getLocalPoints(e->x(), e->y());
Chris@36:     if (points.empty()) return;
Chris@36: 
Chris@36:     QString label = points.begin()->label;
Chris@36: 
Chris@36:     bool ok = false;
Chris@36:     label = QInputDialog::getText(m_view, tr("Enter label"),
Chris@36: 				  tr("Please enter a new label:"),
Chris@36: 				  QLineEdit::Normal, label, &ok);
Chris@36:     if (ok && label != points.begin()->label) {
Chris@36: 	TextModel::RelabelCommand *command =
Chris@36: 	    new TextModel::RelabelCommand(m_model, *points.begin(), label);
Chris@36: 	CommandHistory::getInstance()->addCommand(command, true);
Chris@36:     }
Chris@36: }    
Chris@36: 
Chris@35: QString
Chris@35: TextLayer::toXmlString(QString indent, QString extraAttributes) const
Chris@35: {
Chris@35:     return Layer::toXmlString(indent, extraAttributes +
Chris@35: 			      QString(" colour=\"%1\"")
Chris@35: 			      .arg(encodeColour(m_colour)));
Chris@35: }
Chris@35: 
Chris@35: void
Chris@35: TextLayer::setProperties(const QXmlAttributes &attributes)
Chris@35: {
Chris@35:     QString colourSpec = attributes.value("colour");
Chris@35:     if (colourSpec != "") {
Chris@35: 	QColor colour(colourSpec);
Chris@35: 	if (colour.isValid()) {
Chris@35: 	    setBaseColour(QColor(colourSpec));
Chris@35: 	}
Chris@35:     }
Chris@35: }
Chris@35: 
Chris@35: 
Chris@35: #ifdef INCLUDE_MOCFILES
Chris@35: #include "TextLayer.moc.cpp"
Chris@35: #endif
Chris@35: