Use millimeters when declaring QPrinter page size

(This is needed to allow to set a resolution with the printer used by the map renderer)
qgis · May 14, 2017 · a4b7af7 · a4b7af7
1 parent f8f7d60
commit a4b7af7
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/src/app/qgisapp.cpp b/src/app/qgisapp.cpp
@@ -5883,8 +5883,10 @@ void QgisApp::saveMapAsPdf()
     printer->setOutputFileName( fileName );
     printer->setOutputFormat( QPrinter::PdfFormat );
     printer->setOrientation( QPrinter::Portrait );
-    printer->setPaperSize( dlg.size(), QPrinter::DevicePixel );
-    printer->setPageMargins( 0, 0, 0, 0, QPrinter::DevicePixel );
+    // paper size needs to be given in millimeters in order to be able to set a resolution to pass onto the map renderer
+    printer->setPaperSize( dlg.size()  * 25.4 / dlg.dpi(), QPrinter::Millimeter );
+    printer->setPageMargins( 0, 0, 0, 0, QPrinter::Millimeter );
+    printer->setResolution( dlg.dpi() );
 
     QPainter *p = new QPainter();
     QImage *image = nullptr;
@@ -5907,7 +5909,6 @@ void QgisApp::saveMapAsPdf()
     }
     else
     {
-      printer->setResolution( dlg.dpi() );
       p->begin( printer );
     }