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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 _TIME_VALUE_VIEW_H_
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11 #define _TIME_VALUE_VIEW_H_
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12
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13 #include "base/Layer.h"
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14 #include "model/SparseTimeValueModel.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 TimeValueLayer : 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 TimeValueLayer(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 QRect getFeatureDescriptionRect(QPainter &, QPoint) const;
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32 virtual void paintLocalFeatureDescription(QPainter &, QRect, QPoint) const;
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33
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34 virtual int getNearestFeatureFrame(int frame,
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35 size_t &resolution,
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36 bool snapRight = true) const;
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37
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38 virtual void drawStart(QMouseEvent *);
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39 virtual void drawDrag(QMouseEvent *);
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40 virtual void drawEnd(QMouseEvent *);
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41
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42 virtual void editStart(QMouseEvent *);
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43 virtual void editDrag(QMouseEvent *);
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44 virtual void editEnd(QMouseEvent *);
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45
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46 virtual const Model *getModel() const { return m_model; }
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47 void setModel(SparseTimeValueModel *model);
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48
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49 virtual PropertyList getProperties() const;
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50 virtual PropertyType getPropertyType(const PropertyName &) const;
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51 virtual int getPropertyRangeAndValue(const PropertyName &,
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52 int *min, int *max) const;
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53 virtual QString getPropertyValueLabel(const PropertyName &,
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54 int value) const;
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55 virtual void setProperty(const PropertyName &, int value);
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56
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57 void setBaseColour(QColor);
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58 QColor getBaseColour() const { return m_colour; }
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59
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60 enum PlotStyle { PlotPoints, PlotStems, PlotConnectedPoints, PlotLines, PlotCurve };
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61
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62 void setPlotStyle(PlotStyle style);
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63 PlotStyle getPlotStyle() const { return m_plotStyle; }
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64
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65 virtual bool isLayerScrollable() const;
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66
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67 virtual bool isLayerEditable() const { return true; }
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68
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69 virtual int getCompletion() const { return m_model->getCompletion(); }
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70
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71 virtual QString toXmlString(QString indent = "",
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72 QString extraAttributes = "") const;
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73
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74 void setProperties(const QXmlAttributes &attributes);
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75
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76 protected:
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77 int getYForValue(float value) const;
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78 float getValueForY(int y) const;
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79
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80 SparseTimeValueModel::PointList getLocalPoints(int) const;
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81
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82 SparseTimeValueModel *m_model;
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83 bool m_editing;
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84 SparseTimeValueModel::Point m_originalPoint;
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85 SparseTimeValueModel::Point m_editingPoint;
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86 SparseTimeValueModel::EditCommand *m_editingCommand;
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87 QColor m_colour;
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88 PlotStyle m_plotStyle;
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89 };
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90
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91 #endif
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92
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