Fixed QPrinter.setPaperSize deprecation issue

Author: PierreRaybaut

qwt/plot_renderer.py

@@ -22,6 +22,7 @@
     QColor,
     QImage,
     QImageWriter,
+    QPageSize,
     QPaintDevice,
     QPainter,
     QPainterPath,
@@ -246,7 +247,7 @@ def renderDocument(
                 printer.setOutputFormat(QPrinter.PostScriptFormat)
             printer.setColorMode(QPrinter.Color)
             printer.setFullPage(True)
-            printer.setPaperSize(sizeMM, QPrinter.Millimeter)
+            printer.setPageSize(QPageSize(sizeMM, QPageSize.Millimeter))
             printer.setDocName(title)
             printer.setOutputFileName(filename)
             printer.setResolution(resolution)
@@ -725,3 +726,4 @@ def exportTo(self, plot, documentname, sizeMM=None, resolution=85):
             return False
         self.renderDocument(plot, filename, sizeMM, resolution)
         return True
+        return True

qwt/tests/test_bodedemo.py

@@ -252,7 +252,10 @@ def print_(self, unattended=False):
 
         printer.setCreator("Bode example")
         printer.setPageOrientation(QPageLayout.Landscape)
-        printer.setColorMode(QPrinter.Color)
+        try:
+            printer.setColorMode(QPrinter.Color)
+        except AttributeError:
+            pass
 
         docName = str(self.plot.title().text())
         if not docName: