Deal with ca and CA transparency operators in pdf. add comments to generated classes.

experimental/PdfViewer/SkPdfCalgrayColorSpaceDictionary_autogen.h

 #ifndef __DEFINED__SkPdfCalgrayColorSpaceDictionary
 #define __DEFINED__SkPdfCalgrayColorSpaceDictionary
 
 #include "SkPdfEnums_autogen.h"
 #include "SkPdfArray_autogen.h"
 #include "SkPdfDictionary_autogen.h"
 
+// Entries in a CalGray color space dictionary
 class SkPdfCalgrayColorSpaceDictionary : public SkPdfDictionary {
 public:
   virtual SkPdfObjectType getType() const { return kCalgrayColorSpaceDictionary_SkPdfObjectType;}
   virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kCalgrayColorSpaceDictionary_SkPdfObjectType + 1);}
 public:
   virtual SkPdfCalgrayColorSpaceDictionary* asCalgrayColorSpaceDictionary() {return this;}
   virtual const SkPdfCalgrayColorSpaceDictionary* asCalgrayColorSpaceDictionary() const {return this;}
 
 private:
   virtual SkPdfALinkAnnotationDictionary* asALinkAnnotationDictionary() {return NULL;}
@@ skipping 496 matching lines @@
 
 public:
 private:
 public:
   SkPdfCalgrayColorSpaceDictionary(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfDictionary(podofoDoc, podofoObj) {}
 
   virtual bool valid() const {return true;}
 
   SkPdfCalgrayColorSpaceDictionary& operator=(const SkPdfCalgrayColorSpaceDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
 
+/** (Required) An array of three numbers [XW YW ZW ] specifying the tri-
+ *  stimulus value, in the CIE 1931 XYZ space, of the diffuse white point; see
+ *  "CalRGB Color Spaces," below, for further discussion. The numbers XW and
+ *  ZW must be positive, and YW must be equal to 1.0.
+**/
+  bool has_WhitePoint() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "WhitePoint", "", NULL));
+  }
+
   SkPdfArray WhitePoint() const {
     SkPdfArray ret;
     if (ArrayFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "WhitePoint", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return SkPdfArray();
   }
 
+/** (Optional) An array of three numbers [ XB YB ZB ] specifying the tristimulus
+ *  value, in the CIE 1931 XYZ space, of the diffuse black point; see "CalRGB
+ *  Color Spaces," below, for further discussion. All three of these numbers must
+ *  be nonnegative. Default value: [0.0 0.0 0.0].
+**/
+  bool has_BlackPoint() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BlackPoint", "", NULL));
+  }
+
   SkPdfArray BlackPoint() const {
     SkPdfArray ret;
     if (ArrayFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BlackPoint", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return SkPdfArray();
   }
 
+/** (Optional) A number G defining the gamma for the gray (A) component. G
+ *  must be positive and will generally be greater than or equal to 1. Default
+ *  value: 1.
+**/
+  bool has_Gamma() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Gamma", "", NULL));
+  }
+
   double Gamma() const {
     double ret;
     if (DoubleFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Gamma", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return 0;
   }
 
 };
 
 #endif  // __DEFINED__SkPdfCalgrayColorSpaceDictionary