#3399 export: set colormode to color more often

Signed-off-by: Patrizio Bekerle <[email protected]>

Author: pbek

CHANGELOG.md

@@ -1,5 +1,12 @@
 # QOwnNotes Changelog
 
+## 25.12.2
+
+- Try to fix PDF export not generating color output on some computers
+  - The printer color mode is now explicitly set to color at multiple strategic points during PDF export
+  - This ensures color PDFs are generated regardless of saved printer settings or system defaults
+  - The fix applies to all platforms (Linux, Windows, macOS)
+
 ## 25.12.1
 
 - A lot of refactoring was done to fix build warnings for Qt6, while maintaining

src/mainwindow.cpp

@@ -5417,6 +5417,9 @@ bool MainWindow::prepareExportNoteAsPDFPrinter(QPrinter *printer) {
 #ifdef Q_OS_LINUX
     Utils::Misc::loadPrinterSettings(printer, QStringLiteral("Printer/NotePDFExport"));
 
+    // Ensure color mode is always set to Color for PDF export
+    printer->setColorMode(QPrinter::Color);
+
     // under Linux we use the QPageSetupDialog to change layout
     // settings of the PDF export
     QPageSetupDialog pageSetupDialog(printer, this);
@@ -5425,11 +5428,17 @@ bool MainWindow::prepareExportNoteAsPDFPrinter(QPrinter *printer) {
         return false;
     }
 
+    // Ensure color mode is still set to Color before storing settings
+    printer->setColorMode(QPrinter::Color);
+
     Utils::Misc::storePrinterSettings(printer, QStringLiteral("Printer/NotePDFExport"));
 #else
     // under OS X and Windows the QPageSetupDialog dialog doesn't work,
     // we will use a workaround to select page sizes and the orientation
 
+    // Ensure color mode is always set to Color for PDF export
+    printer->setColorMode(QPrinter::Color);
+
     SettingsService settings;
 
     // select the page size
@@ -5506,6 +5515,8 @@ bool MainWindow::prepareExportNoteAsPDFPrinter(QPrinter *printer) {
         fileName.append(QLatin1String(".pdf"));
     }
 
+    // Ensure color mode is set to Color right before setting output format
+    printer->setColorMode(QPrinter::Color);
     printer->setOutputFormat(QPrinter::PdfFormat);
     printer->setOutputFileName(fileName);
     return true;