problem with svg generator bug QTBUG-52538

src/core/proteinmatch.cpp

@@ -364,7 +364,7 @@ const QString ProteinMatch::getHtmlSequence(PeptideEvidence * peptide_evidence_t
         }
     }
     QString sequence = getProteinXtpSp().get()->getSequence();
-    QString sequence_html;
+    QString sequence_html("<style type=\"text/css\">\nspan { margin: 0px;padding: 0px; }\n</style>");
     for (unsigned int i=0; i < prot_size; i++) {
         if(highlight_bool[i]) {
             sequence_html.append(QString("<span style=\"background-color:%2;\">%1").arg(sequence[i]).arg(_color_highlighted_peptide_background.name()));

src/gui/protein_view/proteinwindow.cpp

@@ -168,62 +168,76 @@ void ProteinWindow::doSaveSvg() {
         //QPainter painter;
         //painter.begin(&generator);
         //painter.setViewport(0,0, size.width(), size.height());
+
+        // ui->sequenceTextEdit->document()->drawContents(&painter);
+        // painter.end();
+        //QFont::Monospace
+        QFont font("Monospace");
+        font.setStyleHint(QFont::Monospace);
+        font.setLetterSpacing(QFont::AbsoluteSpacing,0);
+        font.setPointSize(16);        //generator.setDefaultFont(font);
         
-       // ui->sequenceTextEdit->document()->drawContents(&painter);
-       // painter.end();
-        
-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->setUseDesignMetrics(true);
-    doc->setDefaultTextOption ( QTextOption (Qt::AlignHCenter )  ); 
-    //// height from doc QTextDocument
-    //// http://fop-miniscribus.googlecode.com/svn/trunk/fop_miniscribus.1.0.0/src/floating_box/floatdiagram.cpp
-    //////setMaximumHeight(DocumentHighgtActual());  
- 
-        QPainter *p = new QPainter(&generator);
-        p->setRenderHint(QPainter::Antialiasing, true);
-        doc->drawContents(p);
-        p->end();
- 
-        
-/*
-        QSvgGenerator svg;
-svg.setFileName(filename);
-QTextDocument *doc = ui->sequenceTextEdit->document()->clone();
-QRect rectSize(0, 0, (int) doc->size().width(), (int) doc->size().height());
-QPainter painter(&svg);
-//painter.setViewport(rectSize);
-//doc->documentLayout()->setPaintDevice(&svg);
-doc->drawContents(&painter);
-*/
-
-/*
-QtWebEngine::initialize();
-    QWebEnginePage page;
-    QEventLoop loop;
-    loop.connect(&page, &QWebEnginePage::loadFinished, [&page, &loop, &filename]() {
-        page.printToPdf([&loop, &filename] (QByteArray ba) {
-            QFile f(filename);
-            if (f.open(QIODevice::WriteOnly))
-            {
-                f.write(ba);
-                f.close();
-            } else {
-                qDebug() << "Error opening file for writing" << filename << f.errorString();
-            }
-            loop.exit();
-        });
-    });
-    qDebug() << ui->sequenceTextEdit->toHtml();
-    page.setHtml(ui->sequenceTextEdit->toHtml());
-    loop.exec();
-    */
+        QTextOption text_option;
+        text_option.setWrapMode(QTextOption::WrapAnywhere);
+        text_option.setFlags(QTextOption::IncludeTrailingSpaces|QTextOption::ShowTabsAndSpaces);
+        text_option.setUseDesignMetrics(0);
+
+        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->setDefaultFont(font);
+        doc->setPageSize(size);
+        doc->setUseDesignMetrics(true);
+        doc->setDefaultTextOption ( QTextOption (Qt::AlignHCenter )  );
+        doc->setDefaultTextOption(text_option);
+        //// height from doc QTextDocument
+        //// http://fop-miniscribus.googlecode.com/svn/trunk/fop_miniscribus.1.0.0/src/floating_box/floatdiagram.cpp
+        //////setMaximumHeight(DocumentHighgtActual());
+
+        QPainter *painter = new QPainter(&generator);
+        painter->setRenderHint(QPainter::Antialiasing, true);
+        painter->setFont(font);
+        doc->drawContents(painter);
+        painter->end();
+
+
+        /*
+                QSvgGenerator svg;
+        svg.setFileName(filename);
+        QTextDocument *doc = ui->sequenceTextEdit->document()->clone();
+        QRect rectSize(0, 0, (int) doc->size().width(), (int) doc->size().height());
+        QPainter painter(&svg);
+        //painter.setViewport(rectSize);
+        //doc->documentLayout()->setPaintDevice(&svg);
+        doc->drawContents(&painter);
+        */
+
+        /*
+        QtWebEngine::initialize();
+            QWebEnginePage page;
+            QEventLoop loop;
+            loop.connect(&page, &QWebEnginePage::loadFinished, [&page, &loop, &filename]() {
+                page.printToPdf([&loop, &filename] (QByteArray ba) {
+                    QFile f(filename);
+                    if (f.open(QIODevice::WriteOnly))
+                    {
+                        f.write(ba);
+                        f.close();
+                    } else {
+                        qDebug() << "Error opening file for writing" << filename << f.errorString();
+                    }
+                    loop.exit();
+                });
+            });
+            qDebug() << ui->sequenceTextEdit->toHtml();
+            page.setHtml(ui->sequenceTextEdit->toHtml());
+            loop.exec();
+            */
     }
     catch (pappso::PappsoException & error) {
         QMessageBox::warning(this,
                              tr("Error trying to save spectrum to SVG file :"), error.qwhat());
     }
-    
+
 }