pdf preview: proper highlighting for quoted (inside ") queries

gui/mainwindow.cpp

@@ -217,14 +217,21 @@ void MainWindow::makePdfPreview()
 	scaleText.chop(1);
 
 	QVector<QString> wordsToHighlight;
+	QRegularExpression extractor(R"#("([^"]*)"|(\w+))#");
 	for(const Token &token : this->currentQuery.getTokens())
 	{
 		if(token.type == FILTER_CONTENT_CONTAINS)
 		{
-			auto splitted = token.value.split(" ");
-			for(QString &str : splitted)
+			QRegularExpressionMatchIterator i = extractor.globalMatch(token.value);
+			while(i.hasNext())
 			{
-				wordsToHighlight.append(str);
+				QRegularExpressionMatch m = i.next();
+				QString value = m.captured(1);
+				if(value.isEmpty())
+				{
+					value = m.captured(2);
+				}
+				wordsToHighlight.append(value);
 			}
 		}
 	}

gui/pdfworker.cpp

@@ -84,7 +84,7 @@ struct Renderer
 			QImage img = pdfPage->renderToImage(scaleX, scaleY);
 			for(QString &word : wordsToHighlight)
 			{
-				QList<QRectF> rects = pdfPage->search(word);
+				QList<QRectF> rects = pdfPage->search(word, Poppler::Page::CaseInsensitive);
 				for(QRectF &rect : rects)
 				{
 					QPainter painter(&img);