comparison layer/NoteLayer.h @ 30:ea6fe8cfcdd5

* Add the Note layer for pianoroll-type display of note-type data
* Complete the MIDI file importer (well, nearly -- it would be nice to
  be able to import the non-note data as other sorts of models, and that's
  not done yet).
* Minor refactoring in RealTime etc

+/* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    A waveform viewer and audio annotation editor.
+    Chris Cannam, Queen Mary University of London, 2005-2006
+    
+    This is experimental software.  Not for distribution.
+*/
+
+#ifndef _NOTE_LAYER_H_
+#define _NOTE_LAYER_H_
+
+#include "base/Layer.h"
+#include "model/NoteModel.h"
+
+#include <QObject>
+#include <QColor>
+
+class View;
+class QPainter;
+
+class NoteLayer : public Layer
+{
+    Q_OBJECT
+
+public:
+    NoteLayer(View *w);
+
+    virtual void paint(QPainter &paint, QRect rect) const;
+
+    virtual QString getFeatureDescription(QPoint &) const;
+
+    virtual bool snapToFeatureFrame(int &frame,
+				    size_t &resolution,
+				    SnapType snap) const;
+
+    virtual void drawStart(QMouseEvent *);
+    virtual void drawDrag(QMouseEvent *);
+    virtual void drawEnd(QMouseEvent *);
+
+    virtual void editStart(QMouseEvent *);
+    virtual void editDrag(QMouseEvent *);
+    virtual void editEnd(QMouseEvent *);
+
+    virtual const Model *getModel() const { return m_model; }
+    void setModel(NoteModel *model);
+
+    virtual PropertyList getProperties() const;
+    virtual PropertyType getPropertyType(const PropertyName &) const;
+    virtual int getPropertyRangeAndValue(const PropertyName &,
+					   int *min, int *max) const;
+    virtual QString getPropertyValueLabel(const PropertyName &,
+					  int value) const;
+    virtual void setProperty(const PropertyName &, int value);
+
+    void setBaseColour(QColor);
+    QColor getBaseColour() const { return m_colour; }
+
+    enum VerticalScale {
+	MinMaxRangeScale,
+	MIDIRangeScale,
+	FrequencyScale
+    };
+
+    void setVerticalScale(VerticalScale scale);
+    VerticalScale getVerticalScale() const { return m_verticalScale; }
+
+    virtual bool isLayerScrollable() const;
+
+    virtual bool isLayerEditable() const { return true; }
+
+    virtual int getCompletion() const { return m_model->getCompletion(); }
+
+    virtual QString toXmlString(QString indent = "",
+				QString extraAttributes = "") const;
+
+    void setProperties(const QXmlAttributes &attributes);
+
+protected:
+    int getYForValue(float value) const;
+    float getValueForY(int y) const;
+
+    NoteModel::PointList getLocalPoints(int) const;
+
+    NoteModel *m_model;
+    bool m_editing;
+    NoteModel::Point m_originalPoint;
+    NoteModel::Point m_editingPoint;
+    NoteModel::EditCommand *m_editingCommand;
+    QColor m_colour;
+    VerticalScale m_verticalScale;
+};
+
+#endif
+