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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 Sonic Visualiser
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5 An audio file viewer and annotation editor.
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6 Centre for Digital Music, Queen Mary, University of London.
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7 This file copyright 2006 Chris Cannam.
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8
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9 This program is free software; you can redistribute it and/or
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10 modify it under the terms of the GNU General Public License as
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11 published by the Free Software Foundation; either version 2 of the
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12 License, or (at your option) any later version. See the file
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13 COPYING included with this distribution for more information.
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14 */
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15
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16 #ifndef _TEXT_MODEL_H_
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17 #define _TEXT_MODEL_H_
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18
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19 #include "SparseModel.h"
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20 #include "base/RealTime.h"
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21
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22 /**
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23 * Text point type for use in a SparseModel. This represents a piece
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24 * of text at a given time and y-value in the [0,1) range (indicative
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25 * of height on the window). Intended for casual textual annotations.
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26 */
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27
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28 struct TextPoint
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29 {
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30 public:
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31 TextPoint(long _frame) : frame(_frame), height(0.0f) { }
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32 TextPoint(long _frame, float _height, QString _label) :
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33 frame(_frame), height(_height), label(_label) { }
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34
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35 int getDimensions() const { return 2; }
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36
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37 long frame;
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38 float height;
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39 QString label;
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40
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41 QString toXmlString(QString indent = "",
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42 QString extraAttributes = "") const
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43 {
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44 return QString("%1<point frame=\"%2\" height=\"%3\" label=\"%4\" %5/>\n")
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45 .arg(indent).arg(frame).arg(height).arg(label).arg(extraAttributes);
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46 }
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47
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48 QString toDelimitedDataString(QString delimiter, size_t sampleRate) const
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49 {
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50 QStringList list;
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51 list << RealTime::frame2RealTime(frame, sampleRate).toString().c_str();
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52 list << QString("%1").arg(height);
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53 list << label;
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54 return list.join(delimiter);
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55 }
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56
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57 struct Comparator {
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58 bool operator()(const TextPoint &p1,
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59 const TextPoint &p2) const {
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60 if (p1.frame != p2.frame) return p1.frame < p2.frame;
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61 if (p1.height != p2.height) return p1.height < p2.height;
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62 return p1.label < p2.label;
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63 }
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64 };
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65
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66 struct OrderComparator {
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67 bool operator()(const TextPoint &p1,
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68 const TextPoint &p2) const {
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69 return p1.frame < p2.frame;
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70 }
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71 };
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72 };
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73
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74
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75 // Make this a class rather than a typedef so it can be predeclared.
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76
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77 class TextModel : public SparseModel<TextPoint>
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78 {
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79 public:
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80 TextModel(size_t sampleRate, size_t resolution, bool notifyOnAdd = true) :
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81 SparseModel<TextPoint>(sampleRate, resolution, notifyOnAdd)
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82 { }
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83
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84 virtual QString toXmlString(QString indent = "",
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85 QString extraAttributes = "") const
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86 {
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87 return SparseModel<TextPoint>::toXmlString
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88 (indent,
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89 QString("%1 subtype=\"text\"")
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90 .arg(extraAttributes));
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91 }
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92 };
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93
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94
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95 #endif
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96
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97
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98
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