comparison layer/TimeInstantLayer.cpp @ 25:dcdb21b62dbb

* Refactor sparse models.  Previously the 1D and time-value models duplicated
  a lot of code; now there is a base class (SparseModel) templated on the
  stored point type, and the subclasses define point types with the necessary
  characteristics.

* Add NoteModel, a new SparseModel subclass.

* Reorganise local feature description display.  Instead of asking the layer
  to draw its own, just query it for a textual description and draw that in
  Pane.  Greatly simplifies this part of the layer code.

* Add local feature descriptions to colour 3D plot and waveform layers.

* Add pitch in MIDI-pitch-and-cents to spectrogram layer.

* Give AudioGenerator its own mutex to shorten lock times in CallbackPlaySource.

* Minor adjustments to layers menu &c

 {
     QPoint discard;
     return !m_view->shouldIlluminateLocalFeatures(this, discard);
 }
 
-QRect
-TimeInstantLayer::getFeatureDescriptionRect(QPainter &paint, QPoint pos) const
-{
-    return QRect(0, 0,
-		 std::max(100, paint.fontMetrics().width(tr("No local points"))),
-		 50); //!!! cruddy
-}
-
 SparseOneDimensionalModel::PointList
 TimeInstantLayer::getLocalPoints(int x) const
 {
     if (!m_model) return SparseOneDimensionalModel::PointList();
 

     }
 
     return usePoints;
 }
 
-void
-TimeInstantLayer::paintLocalFeatureDescription(QPainter &paint, QRect rect,
-					       QPoint pos) const
-{
-    //!!! bleagh
-
+QString
+TimeInstantLayer::getFeatureDescription(QPoint &pos) const
+{
     int x = pos.x();
+
+    if (!m_model || !m_model->getSampleRate()) return "";
+
+    SparseOneDimensionalModel::PointList points = getLocalPoints(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());
     
-    if (!m_model || !m_model->getSampleRate()) return;
-
-    SparseOneDimensionalModel::PointList points = getLocalPoints(x);
-
-    QFontMetrics metrics = paint.fontMetrics();
-    int xbase = rect.x() + 5;
-    int ybase = rect.y() + 5;
-
-    if (points.empty()) {
-	QString label = tr("No local points");
-	if (!m_model->isReady()) {
-	    label = tr("In progress");
-	}
-	paint.drawText(xbase + 5, ybase + 5 + metrics.ascent(), label);
-	return;
-    }
-
-    long useFrame = points.begin()->frame;
-
-    RealTime rt = RealTime::frame2RealTime(useFrame, m_model->getSampleRate());
-    QString timeText = QString(tr("Time %1")).arg(rt.toText(true).c_str());
-
-    int timewidth = metrics.width(timeText);
-    int labelwidth = metrics.width(points.begin()->label);
-
-    int boxheight = metrics.height() * 2 + 3;
-    int boxwidth = std::max(timewidth, labelwidth);
-
-    paint.drawRect(xbase, ybase, boxwidth + 10,
-		   boxheight + 10 - metrics.descent() + 1);
-
-    paint.drawText(xbase + 5, ybase + 5 + metrics.ascent(), timeText);
-    paint.drawText(xbase + 5, ybase + 7 + metrics.ascent() + metrics.height(),
-		   points.begin()->label);
+    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(getXForFrame(useFrame), pos.y());
+    return text;
 }
 
 int
 TimeInstantLayer::getNearestFeatureFrame(int frame,
 					 size_t &resolution,