Working

app/app.pri

@@ -6,7 +6,7 @@ LANGUAGE = C++
 CONFIG += qt warn_on thread
 QT += core gui
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
-greaterThan(QT_MAJOR_VERSION, 6): QT += core5compat pdf
+greaterThan(QT_MAJOR_VERSION, 5): QT += core5compat pdf
 
 DEFINES += QT_STL QT_NO_CAST_FROM_ASCII QT_NO_CAST_TO_ASCII QT_NO_CAST_FROM_BYTEARRAY QT_STRICT_ITERATORS QT_NO_URL_CAST_FROM_STRING QT_NO_KEYWORDS
 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x050200
@@ -15,6 +15,7 @@ DEFINES += QT_STL QT_NO_CAST_FROM_ASCII QT_NO_CAST_TO_ASCII QT_NO_CAST_FROM_BYTE
 #QMAKE_CXXFLAGS += -Wall -Wextra -Wpedantic -Weffc++ -Wlogical-op -Wmissing-declarations -Wold-style-cast -Woverloaded-virtual -Wshadow -Wstrict-null-sentinel -Wswitch-default -Wuseless-cast -Wzero-as-null-pointer-constant -fmessage-length=0 -fdiagnostics-show-location=every-line
 #QMAKE_CXXFLAGS += -Wall -Wextra -Wpedantic -Wlogical-op -Wmissing-declarations -Wold-style-cast -Woverloaded-virtual
 #QMAKE_CXX = clang
+QMAKE_CXXFLAGS += -Og -ggdb
 
 DEFINES += ORGNAME=\\\"$${ORGNAME}\\\"
 DEFINES += APPNAME=\\\"$${APPNAME}\\\"

app/configappearancewidget.cpp

@@ -115,8 +115,12 @@ void ConfigAppearanceWidget::setItemToolTip(QTableWidgetItem *item, const QFont
 {
 	const QFontMetrics metrics(font);
 	ui.itemTable->setRowHeight(m_itemHighlighted, metrics.height() + m_itemMargin);
-	if (metrics.width(item->text()) >= ui.itemTable->contentsRect().width() - 30)
-		item->setToolTip(item->text());
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
+    if (metrics.horizontalAdvance(item->text()) >= ui.itemTable->contentsRect().width() - 30)
+#else
+    if (metrics.width(item->text()) >= ui.itemTable->contentsRect().width() - 30)
+#endif
+        item->setToolTip(item->text());
 	else
 		item->setToolTip(QString());
 }

app/configeditorwidget.cpp

@@ -22,7 +22,11 @@
 #include "configeditorwidget.h"
 
 #include <QtCore/QSettings>
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+#include <QtCore5Compat/QTextCodec>
+#else
 #include <QTextCodec>
+#endif
 #if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
 #include <QtWidgets/QApplication>
 #else
@@ -197,8 +201,12 @@ void ConfigEditorWidget::fillCodecComboBox(QComboBox *cb)
 	QVector<ComboItem> ciList; ciList.reserve(ca.length());
 	Q_FOREACH(const QByteArray &ba , ca)
 		ciList.append(ComboItem(codecNameToString(ba), ba));
-	qSort(ciList);
-	Q_FOREACH (const ComboItem& ci, ciList) {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
+    std::sort(ciList.begin(), ciList.end());
+#else
+    qSort(ciList);
+#endif
+    Q_FOREACH (const ComboItem& ci, ciList) {
 		cb->addItem(ci.text, ci.data);
 	}
 }

app/editreplacecurrentwidget.cpp

@@ -50,7 +50,11 @@ ReplaceCurrentWidget::ReplaceCurrentWidget(QWidget *parent) : QWidget(parent)
 	buttonsLayout->addWidget(dontReplaceButton);
 	buttonsLayout->addWidget(cancelButton);
 	buttonsLayout->addStretch();
-	buttonsLayout->setMargin(0);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    buttonsLayout->setContentsMargins(0, 0, 0, 0);
+#else
+    buttonsLayout->setMargin(0);
+#endif
 	buttonsWidget->setLayout(buttonsLayout);
 	mainLayout->addWidget(m_replaceLabel);
 	mainLayout->addWidget(buttonsWidget);

app/editreplacewidget.cpp

@@ -100,7 +100,7 @@ void ReplaceWidget::doFind()
 	if (ui.comboBoxFind->findText(currentText) < 0)
 		ui.comboBoxFind->addItem(currentText);
 
-	QTextDocument::FindFlags flags = 0;
+    QTextDocument::FindFlags flags = (QTextDocument::FindFlags)0;
 	if (ui.checkBoxCaseSensitive->isChecked())
 		flags |= QTextDocument::FindCaseSensitively;
 	if (ui.checkBoxWholeWords->isChecked())
@@ -121,7 +121,7 @@ void ReplaceWidget::doReplace()
 	if (ui.comboBoxReplace->findText(replacementText) < 0)
 		ui.comboBoxReplace->addItem(replacementText);
 
-	QTextDocument::FindFlags flags = 0;
+    QTextDocument::FindFlags flags = (QTextDocument::FindFlags)0;
 	if (ui.checkBoxCaseSensitive->isChecked())
 		flags |= QTextDocument::FindCaseSensitively;
 	if (ui.checkBoxWholeWords->isChecked())

app/linenumberwidget.cpp

@@ -74,7 +74,11 @@ void LineNumberWidget::paintEvent(QPaintEvent *event)
 			{
 				if (userBookmarks.at(i) == lineNumber)
 				{
-					painter.fillRect(2, top, fm.width(QLatin1Char('B')) + 4, lineHeight, m_highlightBrush);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)
+                    painter.fillRect(2, top, fm.horizontalAdvance(QLatin1Char('B')) + 4, lineHeight, m_highlightBrush);
+#else
+                    painter.fillRect(2, top, fm.width(QLatin1Char('B')) + 4, lineHeight, m_highlightBrush);
+#endif
 					painter.setPen(m_highlightedTextPen);
 					painter.drawText(4, top, width() - 4, lineHeight, Qt::AlignLeft | Qt::AlignTop, QLatin1String("B"));
 					painter.setPen(m_highlightPen);
@@ -97,8 +101,12 @@ void LineNumberWidget::paintEvent(QPaintEvent *event)
 void LineNumberWidget::mousePressEvent(QMouseEvent *event)
 {
 	event->accept();
-	const QPoint p = m_editor->viewport()->mapFromGlobal(event->globalPos());
-	const int lineNumber = m_editor->cursorForPosition(p).blockNumber() + 1;
+#if QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)
+    const QPointF p = m_editor->viewport()->mapFromGlobal(event->globalPosition());
+#else
+    const QPoint p = m_editor->viewport()->mapFromGlobal(event->globalPos());
+#endif
+    const int lineNumber = m_editor->cursorForPosition(p.toPoint()).blockNumber() + 1;
 	if (lineNumber <= 0)
 		return;
 

app/loghighlighter.cpp

@@ -37,15 +37,23 @@ LogHighlighter::LogHighlighter(QTextDocument *parent)
 	                << tr("This program will not work!");
 	Q_FOREACH (const QString &pattern, keywordPatterns)
 	{
-		rule.pattern = QRegExp(pattern);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)
+        rule.pattern = QRegularExpression(pattern);
+#else
+        rule.pattern = QRegExp(pattern);
+#endif
 		rule.format = keywordFormat;
 		m_highlightingRules.append(rule);
 	}
 
 	QTextCharFormat commandFormat;
 	commandFormat.setForeground(Qt::darkBlue);
 	commandFormat.setFontWeight(QFont::Bold);
-	rule.pattern = QRegExp(QLatin1String("^\\[[^\\]\\d][^\\]]*\\]"));
+#if QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)
+    rule.pattern = QRegularExpression(QLatin1String("^\\[[^\\]\\d][^\\]]*\\]"));
+#else
+    rule.pattern = QRegExp(QLatin1String("^\\[[^\\]\\d][^\\]]*\\]"));
+#endif
 	rule.format = commandFormat;
 	m_highlightingRules.append(rule);
 
@@ -65,16 +73,28 @@ void LogHighlighter::highlightBlock(const QString &text)
 	{
 //		const QRegExp expression(rule.pattern);
 //		int index = text.indexOf(expression);
-		QRegExp expression(rule.pattern);
-		int index = expression.indexIn(text);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)
+        QRegularExpression expression(rule.pattern);
+        QRegularExpressionMatch match = expression.match(text);
+        while (match.hasMatch())
+        {
+            const int length = match.capturedLength();
+            setFormat(match.capturedStart(), length, rule.format);
+//			index = text.indexOf(expression, index + length);
+            match = expression.match(text, match.capturedEnd() + 1);
+        }
+#else
+        QRegExp expression(rule.pattern);
+        int index = text.indexOf(expression);
 		while (index >= 0)
 		{
 			const int length = expression.matchedLength();
 			setFormat(index, length, rule.format);
 //			index = text.indexOf(expression, index + length);
 			index = expression.indexIn(text, index + length);
 		}
-	}
+#endif
+    }
 
 	// Highlight statistics (at the end of the log)
 	setCurrentBlockState(0); // The current block state tracks multiline formatting

app/loghighlighter.h

@@ -23,6 +23,7 @@
 
 #include <QtGui/QSyntaxHighlighter>
 #include <QtGui/QTextCharFormat>
+#include <QRegularExpression>
 
 /** A simple, incomplete highlighter for LaTeX .log files
  * @author Florian Hackenberger <[email protected]>
@@ -44,7 +45,11 @@ class LogHighlighter : public QSyntaxHighlighter
 private:
 	struct LogHighlightingRule
 	{
-		QRegExp pattern; /// The pattern to match for formatting
+#if QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)
+        QRegularExpression pattern; /// The pattern to match for formatting
+#else
+        QRegExp pattern; /// The pattern to match for formatting
+#endif
 		QTextCharFormat format; /// The style of the formatting
 	};
 	/// All highlighting rules with their formatting for easy iteration

app/logtextedit.cpp

@@ -69,7 +69,11 @@ void LogTextEdit::setLogPalette(bool runFailed)
 	if (runFailed)
 	{
 		QPalette failedPalette(QApplication::palette());
-		failedPalette.setColor(QPalette::Background, QColor(255, 102, 102));
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
+        failedPalette.setColor(QPalette::Window, QColor(255, 102, 102));
+#else
+        failedPalette.setColor(QPalette::Background, QColor(255, 102, 102));
+#endif
 		setAutoFillBackground(true);
 		setPalette(failedPalette);
 	}