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

experimental/PdfViewer/SkPdfWidgetAnnotationDictionary_autogen.h

 #ifndef __DEFINED__SkPdfWidgetAnnotationDictionary
 #define __DEFINED__SkPdfWidgetAnnotationDictionary
 
 #include "SkPdfEnums_autogen.h"
 #include "SkPdfArray_autogen.h"
 #include "SkPdfDictionary_autogen.h"
 
+// Additional entries specific to a widget annotation
 class SkPdfWidgetAnnotationDictionary : public SkPdfDictionary {
 public:
   virtual SkPdfObjectType getType() const { return kWidgetAnnotationDictionary_SkPdfObjectType;}
   virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kWidgetAnnotationDictionary_SkPdfObjectType + 1);}
 public:
   virtual SkPdfWidgetAnnotationDictionary* asWidgetAnnotationDictionary() {return this;}
   virtual const SkPdfWidgetAnnotationDictionary* asWidgetAnnotationDictionary() const {return this;}
 
 private:
   virtual SkPdfALinkAnnotationDictionary* asALinkAnnotationDictionary() {return NULL;}
@@ skipping 496 matching lines @@
 
 public:
 private:
 public:
   SkPdfWidgetAnnotationDictionary(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfDictionary(podofoDoc, podofoObj) {}
 
   virtual bool valid() const {return true;}
 
   SkPdfWidgetAnnotationDictionary& operator=(const SkPdfWidgetAnnotationDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
 
+/** (Required) The type of annotation that this dictionary describes; must be Widget
+ *  for a widget annotation.
+**/
+  bool has_Subtype() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Subtype", "", NULL));
+  }
+
   std::string Subtype() const {
     std::string ret;
     if (NameFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Subtype", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return "";
   }
 
+/** (Optional; PDF 1.4) An alternate representation of the annotation's contents in
+ *  human-readable form, useful when extracting the document's contents in sup-
+ *  port of accessibility to disabled users or for other purposes (see Section 9.8.2,
+ *  "Alternate Descriptions").
+**/
+  bool has_Contents() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Contents", "", NULL));
+  }
+
   std::string Contents() const {
     std::string ret;
     if (StringFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Contents", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return "";
   }
 
+/** (Optional) The annotation's highlighting mode, the visual effect to be used when
+ *  the mouse button is pressed or held down inside its active area:
+ *     N    (None) No highlighting.
+ *     I    (Invert) Invert the contents of the annotation rectangle.
+ *     O    (Outline) Invert the annotation's border.
+ *     P    (Push) Display the annotation's down appearance, if any (see Section
+ *          8.4.4, "Appearance Streams"). If no down appearance is defined, offset
+ *          the contents of the annotation rectangle to appear as if it were being
+ *          "pushed" below the surface of the page.
+ *     T    (Toggle) Same as P (which is preferred).
+ *  A highlighting mode other than P overrides any down appearance defined for
+ *  the annotation. Default value: I.
+**/
+  bool has_H() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "H", "", NULL));
+  }
+
   std::string H() const {
     std::string ret;
     if (NameFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "H", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return "";
   }
 
+/** (Optional) An appearance characteristics dictionary to be used in constructing a
+ *  dynamic appearance stream specifying the annotation's visual presentation on
+ *  the page; see "Variable Text" on page 533 for further discussion.
+ *  Note: The name MK for this entry is of historical significance only and has no direct
+ *  meaning.
+**/
+  bool has_MK() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "MK", "", NULL));
+  }
+
   SkPdfDictionary* MK() const {
     SkPdfDictionary* ret;
     if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "MK", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return NULL;
   }
 
 };
 
 #endif  // __DEFINED__SkPdfWidgetAnnotationDictionary