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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 #include "ViewManager.h"
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11 #include "AudioPlaySource.h"
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12 #include "Model.h"
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13
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14 #include <iostream>
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15
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16 //#define DEBUG_VIEW_MANAGER 1
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17
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18 ViewManager::ViewManager() :
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19 m_playSource(0),
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20 m_globalCentreFrame(0),
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21 m_globalZoom(1024),
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22 m_playbackFrame(0),
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23 m_mainModelSampleRate(0),
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24 m_lastLeft(0),
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25 m_lastRight(0),
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26 m_inProgressExclusive(true),
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27 m_toolMode(NavigateMode),
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28 m_playLoopMode(false),
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29 m_playSelectionMode(false)
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30 {
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31 connect(this,
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32 SIGNAL(centreFrameChanged(void *, unsigned long, bool)),
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33 SLOT(considerSeek(void *, unsigned long, bool)));
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34
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35 connect(this,
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36 SIGNAL(zoomLevelChanged(void *, unsigned long, bool)),
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37 SLOT(considerZoomChange(void *, unsigned long, bool)));
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38 }
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39
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40 unsigned long
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41 ViewManager::getGlobalCentreFrame() const
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42 {
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43 #ifdef DEBUG_VIEW_MANAGER
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44 std::cout << "ViewManager::getGlobalCentreFrame: returning " << m_globalCentreFrame << std::endl;
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45 #endif
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46 return m_globalCentreFrame;
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47 }
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48
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49 unsigned long
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50 ViewManager::getGlobalZoom() const
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51 {
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52 #ifdef DEBUG_VIEW_MANAGER
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53 std::cout << "ViewManager::getGlobalZoom: returning " << m_globalZoom << std::endl;
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54 #endif
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55 return m_globalZoom;
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56 }
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57
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58 unsigned long
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59 ViewManager::getPlaybackFrame() const
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60 {
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61 if (m_playSource && m_playSource->isPlaying()) {
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62 m_playbackFrame = m_playSource->getCurrentPlayingFrame();
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63 }
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64 return m_playbackFrame;
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65 }
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66
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67 void
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68 ViewManager::setPlaybackFrame(unsigned long f)
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69 {
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70 if (m_playbackFrame != f) {
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71 m_playbackFrame = f;
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72 if (m_playSource && m_playSource->isPlaying()) {
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73 m_playSource->play(f);
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74 }
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75 emit playbackFrameChanged(f);
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76 }
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77 }
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78
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79 bool
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80 ViewManager::haveInProgressSelection() const
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81 {
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82 return !m_inProgressSelection.isEmpty();
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83 }
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84
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85 const Selection &
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86 ViewManager::getInProgressSelection(bool &exclusive) const
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87 {
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88 exclusive = m_inProgressExclusive;
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89 return m_inProgressSelection;
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90 }
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91
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92 void
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93 ViewManager::setInProgressSelection(const Selection &selection, bool exclusive)
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94 {
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95 m_inProgressExclusive = exclusive;
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96 m_inProgressSelection = selection;
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97 if (exclusive) clearSelections();
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98 emit inProgressSelectionChanged();
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99 }
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100
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101 void
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102 ViewManager::clearInProgressSelection()
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103 {
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104 m_inProgressSelection = Selection();
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105 emit inProgressSelectionChanged();
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106 }
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107
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108 const MultiSelection &
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109 ViewManager::getSelection() const
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110 {
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111 return m_selections;
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112 }
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113
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114 const MultiSelection::SelectionList &
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115 ViewManager::getSelections() const
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116 {
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117 return m_selections.getSelections();
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118 }
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119
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120 void
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121 ViewManager::setSelection(const Selection &selection)
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122 {
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123 m_selections.setSelection(selection);
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124 emit selectionChanged();
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125 }
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126
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127 void
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128 ViewManager::addSelection(const Selection &selection)
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129 {
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130 m_selections.addSelection(selection);
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131 emit selectionChanged();
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132 }
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133
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134 void
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135 ViewManager::removeSelection(const Selection &selection)
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136 {
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137 m_selections.removeSelection(selection);
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138 emit selectionChanged();
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139 }
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140
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141 void
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142 ViewManager::clearSelections()
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143 {
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144 m_selections.clearSelections();
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145 emit selectionChanged();
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146 }
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147
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148 Selection
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149 ViewManager::getContainingSelection(size_t frame, bool defaultToFollowing) const
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150 {
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151 return m_selections.getContainingSelection(frame, defaultToFollowing);
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152 }
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153
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154 void
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155 ViewManager::setToolMode(ToolMode mode)
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156 {
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157 m_toolMode = mode;
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158
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159 emit toolModeChanged();
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160 }
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161
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162 void
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163 ViewManager::setPlayLoopMode(bool mode)
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164 {
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165 m_playLoopMode = mode;
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166
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167 emit playLoopModeChanged();
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168 }
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169
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170 void
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171 ViewManager::setPlaySelectionMode(bool mode)
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172 {
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173 m_playSelectionMode = mode;
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174
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175 emit playSelectionModeChanged();
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176 }
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177
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178 size_t
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179 ViewManager::getPlaybackSampleRate() const
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180 {
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181 if (m_playSource) {
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182 return m_playSource->getTargetSampleRate();
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183 }
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184 return 0;
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185 }
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186
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187 void
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188 ViewManager::setAudioPlaySource(AudioPlaySource *source)
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189 {
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190 if (!m_playSource) {
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191 QTimer::singleShot(100, this, SLOT(checkPlayStatus()));
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192 }
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193 m_playSource = source;
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194 }
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195
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196 void
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197 ViewManager::playStatusChanged(bool playing)
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198 {
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199 checkPlayStatus();
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200 }
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201
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202 void
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203 ViewManager::checkPlayStatus()
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204 {
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205 if (m_playSource && m_playSource->isPlaying()) {
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206
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207 float left = 0, right = 0;
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208 if (m_playSource->getOutputLevels(left, right)) {
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209 if (left != m_lastLeft || right != m_lastRight) {
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210 emit outputLevelsChanged(left, right);
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211 m_lastLeft = left;
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212 m_lastRight = right;
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213 }
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214 }
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215
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216 m_playbackFrame = m_playSource->getCurrentPlayingFrame();
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217
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218 #ifdef DEBUG_VIEW_MANAGER
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219 std::cout << "ViewManager::checkPlayStatus: Playing, frame " << m_playbackFrame << ", levels " << m_lastLeft << "," << m_lastRight << std::endl;
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220 #endif
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221
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222 emit playbackFrameChanged(m_playbackFrame);
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223
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224 QTimer::singleShot(20, this, SLOT(checkPlayStatus()));
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225
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226 } else {
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227
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228 QTimer::singleShot(100, this, SLOT(checkPlayStatus()));
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229
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230 if (m_lastLeft != 0.0 || m_lastRight != 0.0) {
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231 emit outputLevelsChanged(0.0, 0.0);
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232 m_lastLeft = 0.0;
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233 m_lastRight = 0.0;
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234 }
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235
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236 #ifdef DEBUG_VIEW_MANAGER
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237 // std::cout << "ViewManager::checkPlayStatus: Not playing" << std::endl;
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238 #endif
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239 }
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240 }
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241
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242 bool
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243 ViewManager::isPlaying() const
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244 {
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245 return m_playSource && m_playSource->isPlaying();
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246 }
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247
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248 void
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249 ViewManager::considerSeek(void *p, unsigned long f, bool locked)
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250 {
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251 if (locked) {
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252 m_globalCentreFrame = f;
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253 }
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254
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255 #ifdef DEBUG_VIEW_MANAGER
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256 std::cout << "ViewManager::considerSeek(" << p << ", " << f << ", " << locked << ")" << std::endl;
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257 #endif
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258
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259 if (p == this || !locked) return;
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260
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261 if (m_playSource && m_playSource->isPlaying()) {
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262 unsigned long playFrame = m_playSource->getCurrentPlayingFrame();
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263 unsigned long diff = std::max(f, playFrame) - std::min(f, playFrame);
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264 if (diff > 20000) {
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265 m_playbackFrame = f;
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266 m_playSource->play(f);
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267 #ifdef DEBUG_VIEW_MANAGER
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268 std::cout << "ViewManager::considerSeek: reseeking from " << playFrame << " to " << f << std::endl;
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269 #endif
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270 }
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271 } else {
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272 m_playbackFrame = f; //!!! only if that view is in scroll mode?
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273 }
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274 }
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275
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276 void
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277 ViewManager::considerZoomChange(void *p, unsigned long z, bool locked)
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278 {
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279 if (locked) {
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280 m_globalZoom = z;
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281 }
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282
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283 #ifdef DEBUG_VIEW_MANAGER
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284 std::cout << "ViewManager::considerZoomChange(" << p << ", " << z << ", " << locked << ")" << std::endl;
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285 #endif
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286 }
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287
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288 #ifdef INCLUDE_MOCFILES
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289 #include "ViewManager.moc.cpp"
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290 #endif
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291
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