Add support to extract viewer preference

This change adds the support to extract "NumCopies", "PrintPageRange", "Duplex" viewer preferences for printing.

BUG=169120
R=bo_xu@foxitsoftware.com, vitalybuka@chromium.org

Review URL: https://codereview.chromium.org/345123002

1 files changed, 36 insertions, 0 deletions

diff --git a/fpdfsdk/include/fpdfview.h b/fpdfsdk/include/fpdfview.h
index f4f13750bc..1b7ae2e251 100644
--- a/fpdfsdk/include/fpdfview.h
+++ b/fpdfsdk/include/fpdfview.h
@@ -34,6 +34,7 @@ typedef void*	FPDF_BOOKMARK;
 typedef void*	FPDF_DEST;
 typedef void*	FPDF_ACTION;
 typedef void*	FPDF_LINK;
+typedef void*   FPDF_PAGERANGE;
 
 // Basic data types
 typedef int				FPDF_BOOL;
@@ -42,6 +43,14 @@ typedef unsigned long	FPDF_DWORD;
 
 typedef	float			FS_FLOAT;
 
+// Duplex types
+typedef enum _FPDF_DUPLEXTYPE_ {
+    DuplexUndefined = 0,
+    Simplex,
+    DuplexFlipShortEdge,
+    DuplexFlipLongEdge
+} FPDF_DUPLEXTYPE;
+
 // String types
 typedef unsigned short			FPDF_WCHAR;
 typedef unsigned char const*	FPDF_LPCBYTE;
@@ -556,6 +565,33 @@ DLLEXPORT void STDCALL FPDFBitmap_Destroy(FPDF_BITMAP bitmap);
 //
 DLLEXPORT FPDF_BOOL STDCALL FPDF_VIEWERREF_GetPrintScaling(FPDF_DOCUMENT document);
 
+// Function: FPDF_VIEWERREF_GetNumCopies
+//			Returns the number of copies to be printed.
+// Parameters:
+//			document	-	Handle to the loaded document.
+// Return value:
+//          The number of copies to be printed.
+//
+DLLEXPORT int STDCALL FPDF_VIEWERREF_GetNumCopies(FPDF_DOCUMENT document);
+
+// Function: FPDF_VIEWERREF_GetPrintPageRange
+//			Page numbers to initialize print dialog box when file is printed.
+// Parameters:
+//			document	-	Handle to the loaded document.
+// Return value:
+//          The print page range to be used for printing.
+//
+DLLEXPORT FPDF_PAGERANGE STDCALL FPDF_VIEWERREF_GetPrintPageRange(FPDF_DOCUMENT document);
+
+// Function: FPDF_VIEWERREF_GetDuplex
+//			Returns the paper handling option to be used when printing from print dialog.
+// Parameters:
+//			document	-	Handle to the loaded document.
+// Return value:
+//          The paper handling option to be used when printing.
+//
+DLLEXPORT FPDF_DUPLEXTYPE STDCALL FPDF_VIEWERREF_GetDuplex(FPDF_DOCUMENT document);
+
 // Function: FPDF_GetNamedDestByName
 //			get a special dest handle by the index.
 // Parameters: