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/* -*- 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.
*/
#ifndef SV_NOTE_LAYER_H
#define SV_NOTE_LAYER_H
#include "SingleColourLayer.h"
#include "data/model/NoteModel.h"
#include <QObject>
#include <QColor>
class QPainter;
namespace sv {
class View;
/**
* Layer for displaying and editing notes, i.e. discrete events with
* start time, duration, value that represents pitch, and optionally a
* level that represents velocity.
*
* For the purposes of public API, integration with other classes, and
* display alignment, the y-coordinate (value) of the layer always has
* a unit of Hz. The model itself may have another unit, such as MIDI
* pitch, but the layer always converts to and from Hz behind the
* scenes.
*/
class NoteLayer : public SingleColourLayer
{
Q_OBJECT
public:
NoteLayer();
void paint(LayerGeometryProvider *v, QPainter &paint, QRect rect) const override;
int getVerticalScaleWidth(LayerGeometryProvider *v, bool, QPainter &) const override;
void paintVerticalScale(LayerGeometryProvider *v, bool, QPainter &paint, QRect rect) const override;
QString getFeatureDescription(LayerGeometryProvider *v, QPoint &) const override;
bool snapToFeatureFrame(LayerGeometryProvider *v, sv_frame_t &frame,
int &resolution,
SnapType snap, int ycoord) const override;
void drawStart(LayerGeometryProvider *v, QMouseEvent *) override;
void drawDrag(LayerGeometryProvider *v, QMouseEvent *) override;
void drawEnd(LayerGeometryProvider *v, QMouseEvent *) override;
void eraseStart(LayerGeometryProvider *v, QMouseEvent *) override;
void eraseDrag(LayerGeometryProvider *v, QMouseEvent *) override;
void eraseEnd(LayerGeometryProvider *v, QMouseEvent *) override;
void editStart(LayerGeometryProvider *v, QMouseEvent *) override;
void editDrag(LayerGeometryProvider *v, QMouseEvent *) override;
void editEnd(LayerGeometryProvider *v, QMouseEvent *) override;
bool editOpen(LayerGeometryProvider *v, QMouseEvent *) override;
void moveSelection(Selection s, sv_frame_t newStartFrame) override;
void resizeSelection(Selection s, Selection newSize) override;
void deleteSelection(Selection s) override;
void copy(LayerGeometryProvider *v, Selection s, Clipboard &to) override;
bool paste(LayerGeometryProvider *v, const Clipboard &from,
sv_frame_t frameOffset, bool interactive) override;
ModelId getModel() const override { return m_model; }
void setModel(ModelId model); // a NoteModel
PropertyList getProperties() const override;
QString getPropertyLabel(const PropertyName &) const override;
PropertyType getPropertyType(const PropertyName &) const override;
QString getPropertyGroupName(const PropertyName &) const override;
int getPropertyRangeAndValue(const PropertyName &,
int *min, int *max, int *deflt) const override;
QString getPropertyValueLabel(const PropertyName &,
int value) const override;
void setProperty(const PropertyName &, int value) override;
enum VerticalScale {
AutoAlignScale,
LinearScale,
LogScale,
MIDIRangeScale
};
void setVerticalScale(VerticalScale scale);
VerticalScale getVerticalScale() const { return m_verticalScale; }
bool isLayerScrollable(const LayerGeometryProvider *v) const override;
bool isLayerEditable() const override { return true; }
int getCompletion(LayerGeometryProvider *) const override;
ScaleExtents getVerticalExtents() const override;
bool getDisplayExtents(double &min, double &max) const override;
bool setDisplayExtents(double min, double max) override;
int getVerticalZoomSteps(int &defaultStep) const override;
int getCurrentVerticalZoomStep() const override;
void setVerticalZoomStep(int) override;
RangeMapper *getNewVerticalZoomRangeMapper() const override;
/**
* Add a note-on. Used when recording MIDI "live". The note will
* not be finally added to the layer until the corresponding
* note-off.
*/
void addNoteOn(sv_frame_t frame, int pitch, int velocity);
/**
* Add a note-off. This will cause a note to appear, if and only
* if there is a matching pending note-on.
*/
void addNoteOff(sv_frame_t frame, int pitch);
/**
* Abandon all pending note-on events.
*/
void abandonNoteOns();
void toXml(QTextStream &stream, QString indent = "",
QString extraAttributes = "") const override;
void setProperties(const LayerAttributes &attributes) override;
protected:
QString getScaleUnits() const;
int getDefaultColourHint(bool dark, bool &impose) override;
EventVector getLocalPoints(LayerGeometryProvider *v, int) const;
bool getPointToDrag(LayerGeometryProvider *v, int x, int y, Event &) const;
double convertValueFromEventValue(float eventValue) const;
float convertValueToEventValue(double value) const;
double valueOf(const Event &e) const;
Event eventWithValue(const Event &e, double value) const;
ModelId m_model;
bool m_modelUsesHz;
bool m_editing;
int m_dragPointX;
int m_dragPointY;
int m_dragStartX;
int m_dragStartY;
Event m_originalPoint;
Event m_editingPoint;
ChangeEventsCommand *m_editingCommand;
bool m_editIsOpen;
VerticalScale m_verticalScale;
typedef std::set<Event> NoteSet;
NoteSet m_pendingNoteOns;
mutable double m_scaleMinimum;
mutable double m_scaleMaximum;
bool shouldAutoAlign() const;
void finish(ChangeEventsCommand *command) {
Command *c = command->finish();
if (c) CommandHistory::getInstance()->addCommand(c, false);
}
};
} // end namespace sv
#endif
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