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annotate src/gui/widgets/text.cc @ 365:f81bed4e04ac

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*: megacommit that probably breaks things
author Paper <paper@paper.us.eu.org>
date Wed, 02 Oct 2024 23:06:43 -0400
parents 6b0768158dcd
children ea3a74ed2ef9
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46
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1 #include "gui/widgets/text.h"
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2 #include "core/session.h"
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3 #include "core/strings.h"
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4
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5 #include <QDebug>
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6 #include <QFrame>
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7 #include <QLabel>
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8 #include <QTextBlock>
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9 #include <QVBoxLayout>
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10 #include <QScrollArea>
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11 #include <QDebug>
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12 #include <QPainter>
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13
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14 namespace TextWidgets {
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15
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16 /* Generic header meant to be used in conjunction with Section<T> */
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17
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18 Header::Header(QWidget* parent)
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19 : QWidget(parent)
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20 , title_(new QLabel)
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21 , separator_(new QFrame) {
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22 QVBoxLayout* layout = new QVBoxLayout(this);
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23 setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Maximum);
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24
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25 title_->setTextFormat(Qt::PlainText);
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26
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27 {
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28 QFont font = title_->font();
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29 font.setWeight(QFont::Bold);
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30 title_->setFont(font);
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31 }
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32
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33 separator_->setFrameShape(QFrame::HLine);
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34 separator_->setFrameShadow(QFrame::Sunken);
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35 separator_->setFixedHeight(2);
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36
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37 layout->addWidget(title_.data());
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38 layout->addWidget(separator_.data());
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39 layout->setSpacing(0);
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40 layout->setContentsMargins(0, 0, 0, 0);
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41 }
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42
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43 void Header::SetText(const std::string& text) {
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44 title_->setText(Strings::ToQString(text));
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45 updateGeometry();
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46 }
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47
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48 Label::Label(QWidget *parent) : QLabel(parent) {}
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49 Label::Label(const QString &string, QWidget *parent) : QLabel(string, parent) {}
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50
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51 void Label::SetElidingMode(bool elide) {
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52 elide_ = elide;
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53 update();
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54 }
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55
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56 void Label::paintEvent(QPaintEvent *event) {
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57 if (elide_) {
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58 /* bruh */
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59 if (wordWrap()) {
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60 QFrame::paintEvent(event);
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61
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62 const QString content = text();
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63
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64 QPainter painter(this);
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65 QFontMetrics fontMetrics = painter.fontMetrics();
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66
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67 bool didElide = false;
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68 int lineSpacing = fontMetrics.lineSpacing();
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69 int y = 0;
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70
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71 QTextLayout textLayout(content, painter.font());
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72 textLayout.beginLayout();
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73 for (;;) {
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74 QTextLine line = textLayout.createLine();
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75
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76 if (!line.isValid())
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77 break;
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78
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79 line.setLineWidth(width());
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80 int nextLineY = y + lineSpacing;
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81
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82 if (height() >= nextLineY + lineSpacing) {
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83 line.draw(&painter, QPoint(0, y));
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84 y = nextLineY;
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85 } else {
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86 QString lastLine = content.mid(line.textStart());
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87 QString elidedLastLine = fontMetrics.elidedText(lastLine, Qt::ElideRight, width());
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88 painter.drawText(QPoint(0, y + fontMetrics.ascent()), elidedLastLine);
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89 line = textLayout.createLine();
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90 didElide = line.isValid();
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91 break;
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92 }
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93 }
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94 textLayout.endLayout();
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95 } else {
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96 QString backup_text = QLabel::text();
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97
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98 QFontMetrics metric(fontMetrics());
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99 QString elided_text = metric.elidedText(backup_text, Qt::ElideRight, width());
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100
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101 QLabel::setText(elided_text);
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102 QLabel::paintEvent(event);
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103 QLabel::setText(backup_text);
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104 }
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105 } else {
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106 /* QLabel can handle everything... */
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107 QLabel::paintEvent(event);
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108 }
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109 }
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110
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111 /* ---------------------------------------------------------------------------------- */
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112 /* "Paragraph" widgets, as in widgets meant to hold a bunch of text. */
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113
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114 Paragraph::Paragraph(QWidget *parent) : QWidget(parent), label_(new QLabel) {
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115 QVBoxLayout *layout = new QVBoxLayout(this);
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116 layout->setSpacing(0);
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117 layout->setContentsMargins(0, 0, 0, 0);
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118
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119 label_->setTextInteractionFlags(Qt::TextBrowserInteraction);
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120
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121 /* defaults */
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122 SetWordWrap(true);
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123 SetSelectable(true);
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124
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125 layout->addWidget(label_.data());
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126 }
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127
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128 void Paragraph::SetText(const std::string& text) {
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129 label_->setText(Strings::ToQString(text));
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130 }
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131
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132 void Paragraph::SetSelectable(bool enable) {
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133 label_->setAttribute(Qt::WidgetAttribute::WA_TransparentForMouseEvents, !enable);
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134 label_->setCursor(enable ? Qt::IBeamCursor : Qt::ArrowCursor);
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135 }
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136
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137 void Paragraph::SetWordWrap(bool enable) {
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138 label_->setWordWrap(enable);
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139 }
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140
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141 /* LabelledParagraph implementation */
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142
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143 LabelledParagraph::LabelledParagraph(QWidget* parent)
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144 : QWidget(parent)
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145 , contents_(new QWidget)
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146 , contents_layout_(new QGridLayout) {
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147 QHBoxLayout* ly = new QHBoxLayout(this);
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148
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149 contents_layout_->setVerticalSpacing(1);
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150 contents_layout_->setHorizontalSpacing(20);
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151 contents_layout_->setContentsMargins(0, 0, 0, 0);
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152 contents_layout_->setColumnStretch(1, 0);
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153
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154 contents_->setLayout(contents_layout_.data());
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155
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156 ly->addWidget(contents_.data());
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157 ly->setContentsMargins(0, 0, 0, 0);
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158 }
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159
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160 LabelledParagraph::~LabelledParagraph() {
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161 data_.clear();
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162 }
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163
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164 void LabelledParagraph::Clear(void) {
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165 for (auto& [label, data] : data_) {
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166 contents_layout_->removeWidget(label.data());
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167 contents_layout_->removeWidget(data.data());
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168 }
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169
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170 data_.clear();
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171 }
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172
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173 void LabelledParagraph::SetData(const std::vector<std::pair<std::string, std::string>>& data) {
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174 Clear();
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175
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176 data_.reserve(data.size());
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177 for (std::size_t i = 0; i < data.size(); i++) {
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178 QSharedPointer<Label> first(new Label);
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179 QSharedPointer<Label> second(new Label);
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180
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181 first->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);
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182
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183 first->setText(Strings::ToQString(data[i].first));
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184 second->setText(Strings::ToQString(data[i].second));
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185
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186 data_.push_back({first, second});
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187
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188 contents_layout_->addWidget(first.data(), i, 0);
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189 contents_layout_->addWidget(second.data(), i, 1);
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190 }
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191 }
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192
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193 void LabelledParagraph::SetStyle(int style) {
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194 const QString style_sheet = (style & LabelledParagraph::BoldedLabels) ? "font-weight: bold;" : "";
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195 for (auto& [label, data] : data_)
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196 label->setStyleSheet(style_sheet);
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197
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198 if (style & LabelledParagraph::ElidedData) {
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199 for (auto& [label, data] : data_) {
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200 data->setWordWrap(false);
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201 data->SetElidingMode(true);
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202 }
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203 }
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204 }
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205
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206 } // namespace TextWidgets