Add support to extract viewer preference

core/src/fpdfdoc/doc_viewerPreferences.cpp

Index: core/src/fpdfdoc/doc_viewerPreferences.cpp
diff --git a/core/src/fpdfdoc/doc_viewerPreferences.cpp b/core/src/fpdfdoc/doc_viewerPreferences.cpp
index 617485cfc27b6e5b5d55da488991673826e65fbe..51909ce183f16cf8d4d70411e8ec84880cab373f 100644
--- a/core/src/fpdfdoc/doc_viewerPreferences.cpp
+++ b/core/src/fpdfdoc/doc_viewerPreferences.cpp
@@ -29,3 +29,46 @@ FX_BOOL CPDF_ViewerPreferences::PrintScaling() const
     }
     return FX_BSTRC("None") != pDict->GetString(FX_BSTRC("PrintScaling"));
 }
+FX_INT32 CPDF_ViewerPreferences::NumCopies() const
+{
+    CPDF_Dictionary *pDict = m_pDoc->GetRoot();
+    pDict = pDict->GetDict(FX_BSTRC("ViewerPreferences"));
+    if (!pDict)	{
+        return FALSE;
+    }
+    return pDict->GetInteger(FX_BSTRC("NumCopies"));
+}
+CPDF_Array* CPDF_ViewerPreferences::PrintPageRange() const
+{
+    CPDF_Dictionary *pDict = m_pDoc->GetRoot();
+    CPDF_Array *pRange = NULL;
+    pDict = pDict->GetDict(FX_BSTRC("ViewerPreferences"));
+    if (!pDict)	{
+        return pRange;
+    }
+    pRange = pDict->GetArray(FX_BSTRC("PrintPageRange"));
+    return pRange;
+}
+FX_INT32 CPDF_ViewerPreferences::Duplex() const

[Bo Xu, 2014/06/29 20:58:16]

This function should return a CFX_ByteString like "Simplex".

Then leave the ( ? == ?) part to fpdfview.cpp, so you can define the enum there.

The design of foxit "core" and "fpdfsdk" was to try to return the raw data from
"core" and process it in "fpdfsdk".

[Nikhil, 2014/07/07 08:54:18]

Done.

+{
+    CPDF_Dictionary *pDict = m_pDoc->GetRoot();
+    CFX_ByteString duplex;
+    DuplexType type;

[Vitaly Buka (NO REVIEWS), 2014/06/25 18:02:24]

no need "type" variable.

[Nikhil, 2014/06/26 10:21:38]

Done.

+    pDict = pDict->GetDict(FX_BSTRC("ViewerPreferences"));
+    if (!pDict)	{
+        return type;
+    }
+
+    // Extract and map Duplex property.
+    duplex = pDict->GetString(FX_BSTRC("Duplex"));
+    if (FX_BSTRC("None") == duplex)
+        type = None;

[Vitaly Buka (NO REVIEWS), 2014/06/25 18:02:24]

return immediatly

[Nikhil, 2014/06/26 10:21:38]

Done.

+    if (FX_BSTRC("Simplex") == duplex)
+        type = Simplex;
+    if (FX_BSTRC("DuplexFlipShortEdge") == duplex)
+        type = DuplexFlipShortEdge;
+    if (FX_BSTRC("DuplexFlipLongEdge") == duplex)
+        type = DuplexFlipLongEdge;
+
+    return type;
+}