From 369fc153b1326a755c752d240e288b9e1bc3ac61 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Mon, 24 Jan 2022 12:45:06 +0100
Subject: [PATCH] Gui: code refactoring that handles printer settings, also
 support color mode

---
 src/Gui/MDIView.cpp        | 35 ++++++++++++++++++++++++++++++++---
 src/Gui/MDIView.h          |  4 ++++
 src/Gui/View3DInventor.cpp | 13 +++++--------
 3 files changed, 41 insertions(+), 11 deletions(-)

diff --git a/src/Gui/MDIView.cpp b/src/Gui/MDIView.cpp
index a6f3a652e6..5de18f7b63 100644
--- a/src/Gui/MDIView.cpp
+++ b/src/Gui/MDIView.cpp
@@ -26,12 +26,15 @@
 #ifndef _PreComp_
 # include <boost_signals2.hpp>
 # include <boost_bind_bind.hpp>
-# include <qapplication.h>
-# include <qregexp.h>
+# include <QApplication>
+# include <QRegExp>
 # include <QEvent>
 # include <QCloseEvent>
 # include <QMdiSubWindow>
-#include <iostream>
+# include <QPrinter>
+# include <QPrintDialog>
+# include <QPrinterInfo>
+# include <iostream>
 #endif
 
 
@@ -244,6 +247,32 @@ void MDIView::printPreview()
     std::cerr << "Printing preview not implemented for " << this->metaObject()->className() << std::endl;
 }
 
+void MDIView::savePrinterSettings(QPrinter* printer)
+{
+    auto hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Printer");
+    hGrp = hGrp->GetGroup(printer->printerName().toUtf8());
+
+    hGrp->SetInt("DefaultPageSize", printer->pageLayout().pageSize().id());
+    hGrp->SetInt("DefaultPageOrientation", static_cast<int>(printer->pageLayout().orientation()));
+    hGrp->SetInt("DefaultColorMode", static_cast<int>(printer->colorMode()));
+}
+
+void MDIView::restorePrinterSettings(QPrinter* printer)
+{
+    auto hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Printer");
+    hGrp = hGrp->GetGroup(printer->printerName().toUtf8());
+
+    QPrinterInfo info = QPrinterInfo::defaultPrinter();
+    int initialDefaultPageSize = info.isNull() ? QPageSize::A4 : info.defaultPageSize().id();
+    int defaultPageSize = hGrp->GetInt("DefaultPageSize", initialDefaultPageSize);
+    int defaultPageOrientation = hGrp->GetInt("DefaultPageOrientation", QPageLayout::Portrait);
+    int defaultColorMode = hGrp->GetInt("DefaultColorMode", QPrinter::ColorMode::Color);
+
+    printer->setPageSize(QPageSize(static_cast<QPageSize::PageSizeId>(defaultPageSize)));
+    printer->setPageOrientation(static_cast<QPageLayout::Orientation>(defaultPageOrientation));
+    printer->setColorMode(static_cast<QPrinter::ColorMode>(defaultColorMode));
+}
+
 QStringList MDIView::undoActions() const
 {
     QStringList actions;
diff --git a/src/Gui/MDIView.h b/src/Gui/MDIView.h
index 5a0e97431a..036bb63f33 100644
--- a/src/Gui/MDIView.h
+++ b/src/Gui/MDIView.h
@@ -93,6 +93,10 @@ public:
     virtual void printPdf();
     /** Show a preview dialog */
     virtual void printPreview();
+    /** Save the printer configuration */
+    void savePrinterSettings(QPrinter* printer);
+    /** Restore the printer configuration */
+    void restorePrinterSettings(QPrinter* printer);
     //@}
 
     /** @name Undo/Redo actions */
diff --git a/src/Gui/View3DInventor.cpp b/src/Gui/View3DInventor.cpp
index ab8e284b10..44d282e5c5 100644
--- a/src/Gui/View3DInventor.cpp
+++ b/src/Gui/View3DInventor.cpp
@@ -494,10 +494,13 @@ void View3DInventor::print()
 {
     QPrinter printer(QPrinter::ScreenResolution);
     printer.setFullPage(true);
+    restorePrinterSettings(&printer);
+
     QPrintDialog dlg(&printer, this);
     if (dlg.exec() == QDialog::Accepted) {
         Gui::WaitCursor wc;
         print(&printer);
+        savePrinterSettings(&printer);
     }
 }
 
@@ -518,19 +521,13 @@ void View3DInventor::printPreview()
 {
     QPrinter printer(QPrinter::ScreenResolution);
     printer.setFullPage(true);
-    hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/View");
-    int initialDefaultPageSize = !QPrinterInfo::defaultPrinter().isNull() ? QPrinterInfo::defaultPrinter().defaultPageSize().id() : QPageSize::A4;
-    int defaultPageSize = hGrp->GetInt("DefaultPageSize", initialDefaultPageSize);
-    int defaultPageOrientation = hGrp->GetInt("DefaultPageOrientation", QPageLayout::Portrait);
-    printer.setPageSize(QPageSize(static_cast<QPageSize::PageSizeId>(defaultPageSize)));
-    printer.setPageOrientation(static_cast<QPageLayout::Orientation>(defaultPageOrientation));
+    restorePrinterSettings(&printer);
 
     QPrintPreviewDialog dlg(&printer, this);
     connect(&dlg, SIGNAL(paintRequested (QPrinter *)),
             this, SLOT(print(QPrinter *)));
     dlg.exec();
-    hGrp -> SetInt("DefaultPageSize", printer.pageLayout().pageSize().id());
-    hGrp -> SetInt("DefaultPageOrientation", static_cast<int>(printer.pageLayout().orientation()));
+    savePrinterSettings(&printer);
 }
 
 void View3DInventor::print(QPrinter* printer)