using PDF to wait for SVG

src/gui/protein_view/proteinwindow.cpp

@@ -145,11 +145,11 @@ void ProteinWindow::doSaveSvg() {
         QSettings settings;
         QString default_location = settings.value("path/export_svg", "").toString();
 
-        QString proposed_filename = QString("%1/protein_%1.svg").arg(_p_protein_match->getProteinXtpSp().get()->getAccession());
+        QString proposed_filename = QString("%1/protein_%1.pdf").arg(_p_protein_match->getProteinXtpSp().get()->getAccession());
 
-        QString filename = QFileDialog::getSaveFileName(this, tr("Save SVG file"),
+        QString filename = QFileDialog::getSaveFileName(this, tr("Save PDF file"),
                            proposed_filename,
-                           tr("Scalable Vector Graphic (*.svg)"));
+                           tr("pdf (*.pdf)"));
 
         if (filename.isEmpty()) {
             return;
@@ -157,13 +157,21 @@ void ProteinWindow::doSaveSvg() {
 
         settings.setValue("path/export_svg", QFileInfo(filename).absolutePath());
 
-        QSvgGenerator generator;
-        //generator.setOutputDevice(&buffer);
-        QSize size(600, 1000);
-        generator.setFileName(filename);
-        generator.setSize(size);
-        generator.setViewBox(QRect(0, 0, size.width(), size.height()));
-        generator.setTitle(_p_protein_match->getProteinXtpSp().get()->getAccession());
+        //https://bugreports.qt.io/browse/QTBUG-52538
+        QPrinter printer(QPrinter::PrinterResolution);
+        printer.setOutputFormat(QPrinter::PdfFormat);
+        printer.setPaperSize(QPrinter::A4);
+        printer.setOutputFileName(filename);
+        /*
+            QSvgGenerator generator;
+            //generator.setOutputDevice(&buffer);
+            QSize size(600, 1000);
+            generator.setFileName(filename);
+            generator.setSize(size);
+            generator.setViewBox(QRect(0, 0, size.width(), size.height()));
+            generator.setTitle(_p_protein_match->getProteinXtpSp().get()->getAccession());
+            */
+
         //generator.setDescription(description);
         //QPainter painter;
         //painter.begin(&generator);
@@ -176,7 +184,7 @@ void ProteinWindow::doSaveSvg() {
         font.setStyleHint(QFont::Monospace);
         font.setLetterSpacing(QFont::AbsoluteSpacing,0);
         font.setPointSize(16);        //generator.setDefaultFont(font);
-        
+
         QTextOption text_option;
         text_option.setWrapMode(QTextOption::WrapAnywhere);
         text_option.setFlags(QTextOption::IncludeTrailingSpaces|QTextOption::ShowTabsAndSpaces);
@@ -185,21 +193,22 @@ void ProteinWindow::doSaveSvg() {
         QTextDocument *doc = ui->sequenceTextEdit->document()->clone();
         doc->setUndoRedoEnabled(false);
         //doc->setHtml("<p><span style=\"color:#000000; font-weight:600\">"+text_x+"</span></p>");
-        doc->setTextWidth(size.width());
+        doc->setTextWidth(printer.pageRect().size().width());
         doc->setDefaultFont(font);
-        doc->setPageSize(size);
-        doc->setUseDesignMetrics(true);
-        doc->setDefaultTextOption ( QTextOption (Qt::AlignHCenter )  );
-        doc->setDefaultTextOption(text_option);
+        doc->setPageSize(printer.pageRect().size());
         //// height from doc QTextDocument
         //// http://fop-miniscribus.googlecode.com/svn/trunk/fop_miniscribus.1.0.0/src/floating_box/floatdiagram.cpp
         //////setMaximumHeight(DocumentHighgtActual());
+        doc->setPageSize(printer.pageRect().size()); // This is necessary if you want to hide the page number
+        doc->print(&printer);
 
-        QPainter *painter = new QPainter(&generator);
-        painter->setRenderHint(QPainter::Antialiasing, true);
-        painter->setFont(font);
-        doc->drawContents(painter);
-        painter->end();
+        /*
+            QPainter *painter = new QPainter(&generator);
+            painter->setRenderHint(QPainter::Antialiasing, true);
+            painter->setFont(font);
+            doc->drawContents(painter);
+            painter->end();
+            */
 
 
         /*