2 files changed, 20 insertions, 2 deletions
diff --git a/printing/printing_context_mac.h b/printing/printing_context_mac.h
index 54ad559..e19ceba 100644
--- a/printing/printing_context_mac.h
+++ b/printing/printing_context_mac.h
@@ -59,6 +59,10 @@ class PrintingContextMac : public PrintingContext {
   // Returns true if |collate| is set.
   bool SetCollateInPrintSettings(bool collate);
 
+  // Sets orientation in native print info object.
+  // Returns true if the orientation was set.
+  bool SetOrientationIsLandscape(bool landscape);
+
   // The native print info object.
   scoped_nsobject<NSPrintInfo> print_info_;
 
diff --git a/printing/printing_context_mac.mm b/printing/printing_context_mac.mm
index cc5b808..25f0ef6 100644
--- a/printing/printing_context_mac.mm
+++ b/printing/printing_context_mac.mm
@@ -100,8 +100,6 @@ PrintingContext::Result PrintingContextMac::UpdatePrintSettings(
     return OnError();
   }
 
-  settings_.SetOrientation(landscape);
-
   if (!SetPrinter(printer_name))
     return OnError();
 
@@ -111,6 +109,9 @@ PrintingContext::Result PrintingContextMac::UpdatePrintSettings(
   if (!SetCollateInPrintSettings(collate))
     return OnError();
 
+  if (!SetOrientationIsLandscape(landscape))
+    return OnError();
+
   [print_info_.get() updateFromPMPrintSettings];
 
   InitPrintSettingsFromPrintInfo(ranges);
@@ -159,6 +160,19 @@ bool PrintingContextMac::SetCollateInPrintSettings(bool collate) {
   return PMSetCollate(pmPrintSettings, collate) == noErr;
 }
 
+bool PrintingContextMac::SetOrientationIsLandscape(bool landscape) {
+  PMPageFormat page_format =
+      static_cast<PMPageFormat>([print_info_.get() PMPageFormat]);
+
+  PMOrientation orientation = landscape ? kPMLandscape : kPMPortrait;
+
+  if (PMSetOrientation(page_format, orientation, false) != noErr)
+    return false;
+
+  [print_info_.get() updateFromPMPageFormat];
+  return true;
+}
+
 void PrintingContextMac::ParsePrintInfo(NSPrintInfo* print_info) {
   ResetSettings();
   print_info_.reset([print_info retain]);