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2 /* -*- c-basic-offset: 4 -*- vi:set ts=8 sts=4 sw=4: */
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4 /*
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5 A waveform viewer and audio annotation editor.
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6 Chris Cannam, Queen Mary University of London, 2005-2006
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7
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8 This is experimental software. Not for distribution.
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9 */
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10
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11 #include "PaneStack.h"
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12
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13 #include "widgets/Pane.h"
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14 #include "widgets/PropertyStack.h"
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15 #include "base/Layer.h"
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16 #include "base/ViewManager.h"
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17
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18 #include <QApplication>
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19 #include <QHBoxLayout>
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20 #include <QPainter>
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21 #include <QPalette>
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22 #include <QLabel>
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23
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24 #include <iostream>
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25
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26 PaneStack::PaneStack(QWidget *parent, ViewManager *viewManager) :
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27 QSplitter(parent),
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28 m_currentPane(0),
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29 m_viewManager(viewManager)
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30 {
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31 setOrientation(Qt::Vertical);
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32 setOpaqueResize(false);
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33 }
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34
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35 Pane *
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36 PaneStack::addPane(bool suppressPropertyBox)
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37 {
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38 QFrame *frame = new QFrame;
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39 QHBoxLayout *layout = new QHBoxLayout;
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40 layout->setMargin(0);
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41 layout->setSpacing(2);
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42
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43 QLabel *currentIndicator = new QLabel(frame);
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44 currentIndicator->setFixedWidth(QPainter(this).fontMetrics().width("x"));
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45 layout->addWidget(currentIndicator);
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46 layout->setStretchFactor(currentIndicator, 1);
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47 currentIndicator->setScaledContents(true);
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48 m_currentIndicators.push_back(currentIndicator);
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49
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50 Pane *pane = new Pane(frame);
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51 pane->setViewManager(m_viewManager);
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52 layout->addWidget(pane);
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53 layout->setStretchFactor(pane, 10);
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54 m_panes.push_back(pane);
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55
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56 QWidget *properties = 0;
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57 if (suppressPropertyBox) {
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58 properties = new QFrame();
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59 } else {
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60 properties = new PropertyStack(frame, pane);
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61 connect(properties, SIGNAL(propertyContainerSelected(PropertyContainer *)),
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62 this, SLOT(propertyContainerSelected(PropertyContainer *)));
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63 }
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64 layout->addWidget(properties);
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65 layout->setStretchFactor(properties, 1);
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66 m_propertyStacks.push_back(properties);
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67
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68 frame->setLayout(layout);
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69 addWidget(frame);
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70
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71 connect(pane, SIGNAL(propertyContainerAdded(PropertyContainer *)),
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72 this, SLOT(propertyContainerAdded(PropertyContainer *)));
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73 connect(pane, SIGNAL(propertyContainerRemoved(PropertyContainer *)),
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74 this, SLOT(propertyContainerRemoved(PropertyContainer *)));
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75 connect(pane, SIGNAL(paneInteractedWith()),
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76 this, SLOT(paneInteractedWith()));
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77
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78 if (!m_currentPane) {
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79 setCurrentPane(pane);
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80 }
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81
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82 return pane;
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83 }
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84
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85 Pane *
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86 PaneStack::getPane(int n)
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87 {
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88 return m_panes[n];
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89 }
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90
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91 void
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92 PaneStack::deletePane(Pane *pane)
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93 {
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94 int n = 0;
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95 std::vector<Pane *>::iterator i = m_panes.begin();
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96 std::vector<QWidget *>::iterator j = m_propertyStacks.begin();
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97 std::vector<QLabel *>::iterator k = m_currentIndicators.begin();
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98
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99 while (i != m_panes.end()) {
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100 if (*i == pane) break;
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101 ++i;
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102 ++j;
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103 ++k;
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104 ++n;
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105 }
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106 if (n >= int(m_panes.size())) return;
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107
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108 m_panes.erase(i);
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109 m_propertyStacks.erase(j);
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110 m_currentIndicators.erase(k);
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111 delete widget(n);
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112
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113 if (m_currentPane == pane) {
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114 if (m_panes.size() > 0) {
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115 setCurrentPane(m_panes[0]);
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116 } else {
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117 setCurrentPane(0);
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118 }
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119 }
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120 }
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121
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122 int
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123 PaneStack::getPaneCount() const
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124 {
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125 return m_panes.size();
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126 }
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127
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128 void
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129 PaneStack::setCurrentPane(Pane *pane) // may be null
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130 {
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131 if (m_currentPane == pane) return;
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132
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133 std::vector<Pane *>::iterator i = m_panes.begin();
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134 std::vector<QLabel *>::iterator k = m_currentIndicators.begin();
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135
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136 // We used to do this by setting the foreground and background
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137 // role, but it seems the background role is ignored and the
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138 // background drawn transparent in Qt 4.1 -- I can't quite see why
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139
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140 QPixmap selectedMap(1, 1);
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141 selectedMap.fill(QApplication::palette().color(QPalette::Foreground));
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142
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143 QPixmap unselectedMap(1, 1);
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144 unselectedMap.fill(QApplication::palette().color(QPalette::Background));
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145
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146 while (i != m_panes.end()) {
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147 if (*i == pane) {
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148 (*k)->setPixmap(selectedMap);
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149 } else {
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150 (*k)->setPixmap(unselectedMap);
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151 }
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152 ++i;
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153 ++k;
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154 }
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155 m_currentPane = pane;
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156
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157 emit currentPaneChanged(m_currentPane);
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158 }
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159
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160 Pane *
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161 PaneStack::getCurrentPane()
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162 {
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163 return m_currentPane;
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164 }
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165
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166 void
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167 PaneStack::propertyContainerAdded(PropertyContainer *)
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168 {
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169 sizePropertyStacks();
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170 }
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171
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172 void
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173 PaneStack::propertyContainerRemoved(PropertyContainer *)
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174 {
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175 sizePropertyStacks();
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176 }
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177
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178 void
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179 PaneStack::propertyContainerSelected(PropertyContainer *pc)
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180 {
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181 std::vector<Pane *>::iterator i = m_panes.begin();
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182 std::vector<QWidget *>::iterator j = m_propertyStacks.begin();
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183
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184 while (i != m_panes.end()) {
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185 PropertyStack *stack = dynamic_cast<PropertyStack *>(*j);
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186 if (stack && stack->containsContainer(pc)) {
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187 setCurrentPane(*i);
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188 break;
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189 }
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190 ++i;
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191 ++j;
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192 }
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193 }
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194
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195 void
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196 PaneStack::paneInteractedWith()
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197 {
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198 Pane *pane = dynamic_cast<Pane *>(sender());
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199 if (!pane) return;
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200 setCurrentPane(pane);
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201 }
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202
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203 void
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204 PaneStack::sizePropertyStacks()
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205 {
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206 int maxMinWidth = 0;
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207
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208 for (unsigned int i = 0; i < m_propertyStacks.size(); ++i) {
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209 if (!m_propertyStacks[i]) continue;
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210 std::cerr << "PaneStack::sizePropertyStacks: " << i << ": min "
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211 << m_propertyStacks[i]->minimumSizeHint().width() << ", current "
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212 << m_propertyStacks[i]->width() << std::endl;
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213
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214 if (m_propertyStacks[i]->minimumSizeHint().width() > maxMinWidth) {
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215 maxMinWidth = m_propertyStacks[i]->minimumSizeHint().width();
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216 }
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217 }
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218
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219 std::cerr << "PaneStack::sizePropertyStacks: max min width " << maxMinWidth << std::endl;
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220
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221 #ifdef Q_WS_MAC
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222 // This is necessary to compensate for cb->setMinimumSize(10, 10)
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223 // in PropertyBox in the Mac version (to avoid a mysterious crash)
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224 int setWidth = maxMinWidth * 3 / 2;
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225 #else
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226 int setWidth = maxMinWidth;
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227 #endif
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228
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229 for (unsigned int i = 0; i < m_propertyStacks.size(); ++i) {
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230 if (!m_propertyStacks[i]) continue;
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231 m_propertyStacks[i]->setMinimumWidth(setWidth);
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232 }
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233 }
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234
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235
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236 #ifdef INCLUDE_MOCFILES
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237 #include "PaneStack.moc.cpp"
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238 #endif
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239
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