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1 /* -*- c-basic-offset: 4 -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 A waveform viewer and audio annotation editor.
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5 Chris Cannam, Queen Mary University of London, 2005-2006
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6
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7 This is experimental software. Not for distribution.
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8 */
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9
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10 #ifndef _NOTE_LAYER_H_
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11 #define _NOTE_LAYER_H_
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12
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13 #include "base/Layer.h"
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14 #include "model/NoteModel.h"
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15
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16 #include <QObject>
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17 #include <QColor>
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18
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19 class View;
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20 class QPainter;
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21
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22 class NoteLayer : public Layer
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23 {
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24 Q_OBJECT
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25
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26 public:
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27 NoteLayer(View *w);
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28
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29 virtual void paint(QPainter &paint, QRect rect) const;
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30
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31 virtual QString getFeatureDescription(QPoint &) const;
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32
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33 virtual bool snapToFeatureFrame(int &frame,
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34 size_t &resolution,
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35 SnapType snap) const;
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36
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37 virtual void drawStart(QMouseEvent *);
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38 virtual void drawDrag(QMouseEvent *);
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39 virtual void drawEnd(QMouseEvent *);
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40
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41 virtual void editStart(QMouseEvent *);
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42 virtual void editDrag(QMouseEvent *);
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43 virtual void editEnd(QMouseEvent *);
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44
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45 virtual void moveSelection(Selection s, size_t newStartFrame);
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46 virtual void resizeSelection(Selection s, Selection newSize);
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47
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48 virtual const Model *getModel() const { return m_model; }
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49 void setModel(NoteModel *model);
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50
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51 virtual PropertyList getProperties() const;
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52 virtual PropertyType getPropertyType(const PropertyName &) const;
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53 virtual int getPropertyRangeAndValue(const PropertyName &,
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54 int *min, int *max) const;
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55 virtual QString getPropertyValueLabel(const PropertyName &,
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56 int value) const;
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57 virtual void setProperty(const PropertyName &, int value);
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58
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59 void setBaseColour(QColor);
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60 QColor getBaseColour() const { return m_colour; }
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61
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62 enum VerticalScale {
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63 MinMaxRangeScale,
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64 MIDIRangeScale,
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65 FrequencyScale
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66 };
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67
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68 void setVerticalScale(VerticalScale scale);
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69 VerticalScale getVerticalScale() const { return m_verticalScale; }
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70
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71 virtual bool isLayerScrollable() const;
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72
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73 virtual bool isLayerEditable() const { return true; }
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74
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75 virtual int getCompletion() const { return m_model->getCompletion(); }
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76
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77 virtual QString toXmlString(QString indent = "",
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78 QString extraAttributes = "") const;
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79
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80 void setProperties(const QXmlAttributes &attributes);
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81
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82 protected:
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83 int getYForValue(float value) const;
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84 float getValueForY(int y) const;
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85
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86 NoteModel::PointList getLocalPoints(int) const;
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87
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88 NoteModel *m_model;
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89 bool m_editing;
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90 NoteModel::Point m_originalPoint;
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91 NoteModel::Point m_editingPoint;
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92 NoteModel::EditCommand *m_editingCommand;
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93 QColor m_colour;
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94 VerticalScale m_verticalScale;
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95 };
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96
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97 #endif
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98
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