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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 _REGION_MODEL_H_
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17 #define _REGION_MODEL_H_
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18
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19 #include "IntervalModel.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 * RegionModel -- a concrete IntervalModel for intervals associated
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24 * with a value, which we call regions for no very compelling reason.
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25 */
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26
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27 /**
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28 * Region "point" type. A region is something that has an onset time,
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29 * a single value, and a duration. Like other points, it can also
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30 * have a label.
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31 *
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32 * This is called RegionRec instead of Region to avoid name collisions
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33 * with the X11 Region struct. Bah.
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34 */
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35
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36 struct RegionRec
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37 {
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38 public:
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39 RegionRec() : frame(0), value(0.f), duration(0) { }
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40 RegionRec(sv_frame_t _frame) : frame(_frame), value(0.0f), duration(0) { }
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41 RegionRec(sv_frame_t _frame, float _value, sv_frame_t _duration, QString _label) :
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42 frame(_frame), value(_value), duration(_duration), label(_label) { }
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43
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44 int getDimensions() const { return 3; }
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45
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46 sv_frame_t frame;
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47 float value;
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48 sv_frame_t duration;
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49 QString label;
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50
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51 QString getLabel() const { return label; }
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52
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53 void toXml(QTextStream &stream,
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54 QString indent = "",
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55 QString extraAttributes = "") const
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56 {
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57 stream <<
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58 QString("%1<point frame=\"%2\" value=\"%3\" duration=\"%4\" label=\"%5\" %6/>\n")
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59 .arg(indent).arg(frame).arg(value).arg(duration)
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60 .arg(XmlExportable::encodeEntities(label)).arg(extraAttributes);
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61 }
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62
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63 QString toDelimitedDataString(QString delimiter, int sampleRate) const
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64 {
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65 QStringList list;
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66 list << RealTime::frame2RealTime(frame, sampleRate).toString().c_str();
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67 list << QString("%1").arg(value);
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68 list << RealTime::frame2RealTime(duration, sampleRate).toString().c_str();
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69 if (label != "") list << label;
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70 return list.join(delimiter);
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71 }
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72
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73 struct Comparator {
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74 bool operator()(const RegionRec &p1,
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75 const RegionRec &p2) const {
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76 if (p1.frame != p2.frame) return p1.frame < p2.frame;
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77 if (p1.value != p2.value) return p1.value < p2.value;
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78 if (p1.duration != p2.duration) return p1.duration < p2.duration;
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79 return p1.label < p2.label;
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80 }
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81 };
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82
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83 struct OrderComparator {
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84 bool operator()(const RegionRec &p1,
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85 const RegionRec &p2) const {
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86 return p1.frame < p2.frame;
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87 }
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88 };
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89 };
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90
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91
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92 class RegionModel : public IntervalModel<RegionRec>
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93 {
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94 Q_OBJECT
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95
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96 public:
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97 RegionModel(int sampleRate, int resolution,
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98 bool notifyOnAdd = true) :
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99 IntervalModel<RegionRec>(sampleRate, resolution, notifyOnAdd),
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100 m_valueQuantization(0),
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101 m_haveDistinctValues(false)
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102 {
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103 }
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104
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105 RegionModel(int sampleRate, int resolution,
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106 float valueMinimum, float valueMaximum,
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107 bool notifyOnAdd = true) :
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108 IntervalModel<RegionRec>(sampleRate, resolution,
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109 valueMinimum, valueMaximum,
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110 notifyOnAdd),
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111 m_valueQuantization(0),
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112 m_haveDistinctValues(false)
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113 {
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114 }
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115
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116 virtual ~RegionModel()
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117 {
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118 }
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119
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120 float getValueQuantization() const { return m_valueQuantization; }
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121 void setValueQuantization(float q) { m_valueQuantization = q; }
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122
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123 bool haveDistinctValues() const { return m_haveDistinctValues; }
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124
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125 QString getTypeName() const { return tr("Region"); }
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126
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127 virtual void toXml(QTextStream &out,
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128 QString indent = "",
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129 QString extraAttributes = "") const
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130 {
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131 std::cerr << "RegionModel::toXml: extraAttributes = \""
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132 << extraAttributes.toStdString() << std::endl;
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133
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134 IntervalModel<RegionRec>::toXml
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135 (out,
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136 indent,
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137 QString("%1 subtype=\"region\" valueQuantization=\"%2\"")
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138 .arg(extraAttributes).arg(m_valueQuantization));
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139 }
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140
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141 /**
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142 * TabularModel methods.
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143 */
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144
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145 virtual int getColumnCount() const
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146 {
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147 return 5;
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148 }
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149
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150 virtual QString getHeading(int column) const
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151 {
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152 switch (column) {
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153 case 0: return tr("Time");
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154 case 1: return tr("Frame");
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155 case 2: return tr("Value");
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156 case 3: return tr("Duration");
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157 case 4: return tr("Label");
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158 default: return tr("Unknown");
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159 }
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160 }
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161
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162 virtual QVariant getData(int row, int column, int role) const
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163 {
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164 if (column < 4) {
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165 return IntervalModel<RegionRec>::getData(row, column, role);
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166 }
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167
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168 PointListConstIterator i = getPointListIteratorForRow(row);
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169 if (i == m_points.end()) return QVariant();
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170
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171 switch (column) {
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172 case 4: return i->label;
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173 default: return QVariant();
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174 }
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175 }
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176
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177 virtual Command *getSetDataCommand(int row, int column, const QVariant &value, int role)
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178 {
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179 if (column < 4) {
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180 return IntervalModel<RegionRec>::getSetDataCommand
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181 (row, column, value, role);
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182 }
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183
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184 if (role != Qt::EditRole) return 0;
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185 PointListIterator i = getPointListIteratorForRow(row);
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186 if (i == m_points.end()) return 0;
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187 EditCommand *command = new EditCommand(this, tr("Edit Data"));
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188
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189 Point point(*i);
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190 command->deletePoint(point);
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191
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192 switch (column) {
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193 case 4: point.label = value.toString(); break;
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194 }
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195
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196 command->addPoint(point);
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197 return command->finish();
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198 }
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199
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200 virtual SortType getSortType(int column) const
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201 {
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202 if (column == 4) return SortAlphabetical;
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203 return SortNumeric;
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204 }
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205
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206 virtual void addPoint(const Point &point)
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207 {
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208 if (point.value != 0.f) m_haveDistinctValues = true;
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209 IntervalModel<RegionRec>::addPoint(point);
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210 }
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211
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212 protected:
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213 float m_valueQuantization;
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214 bool m_haveDistinctValues;
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215 };
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216
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217 #endif
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