Basic support for Type3 Fonts in Pdf + various refactorings

experimental/PdfViewer/autogen/SkPdfType6ShadingDictionary_autogen.h

+#ifndef __DEFINED__SkPdfType6ShadingDictionary
+#define __DEFINED__SkPdfType6ShadingDictionary
+
+#include "SkPdfUtils.h"
+#include "SkPdfEnums_autogen.h"
+#include "SkPdfArray_autogen.h"
+#include "SkPdfShadingDictionary_autogen.h"
+
+// Additional entries specific to a type 6 shading dictionary
+class SkPdfType6ShadingDictionary : public SkPdfShadingDictionary {
+public:
+  virtual SkPdfObjectType getType() const { return kType6ShadingDictionary_SkPdfObjectType;}
+  virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kType6ShadingDictionary_SkPdfObjectType + 1);}
+public:
+  virtual SkPdfType6ShadingDictionary* asType6ShadingDictionary() {return this;}
+  virtual const SkPdfType6ShadingDictionary* asType6ShadingDictionary() const {return this;}
+
+private:
+  virtual SkPdfType1ShadingDictionary* asType1ShadingDictionary() {return NULL;}
+  virtual const SkPdfType1ShadingDictionary* asType1ShadingDictionary() const {return NULL;}
+
+  virtual SkPdfType2ShadingDictionary* asType2ShadingDictionary() {return NULL;}
+  virtual const SkPdfType2ShadingDictionary* asType2ShadingDictionary() const {return NULL;}
+
+  virtual SkPdfType3ShadingDictionary* asType3ShadingDictionary() {return NULL;}
+  virtual const SkPdfType3ShadingDictionary* asType3ShadingDictionary() const {return NULL;}
+
+  virtual SkPdfType4ShadingDictionary* asType4ShadingDictionary() {return NULL;}
+  virtual const SkPdfType4ShadingDictionary* asType4ShadingDictionary() const {return NULL;}
+
+  virtual SkPdfType5ShadingDictionary* asType5ShadingDictionary() {return NULL;}
+  virtual const SkPdfType5ShadingDictionary* asType5ShadingDictionary() const {return NULL;}
+
+public:
+private:
+public:
+  SkPdfType6ShadingDictionary(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfShadingDictionary(podofoDoc, podofoObj) {}
+
+  SkPdfType6ShadingDictionary(const SkPdfType6ShadingDictionary& from) : SkPdfShadingDictionary(from.fPodofoDoc, from.fPodofoObj) {}
+
+  virtual bool valid() const {return true;}
+
+  SkPdfType6ShadingDictionary& operator=(const SkPdfType6ShadingDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
+
+/** (Required) The number of bits used to represent each geometric coordi-
+ *  nate. Valid values are 1, 2, 4, 8, 12, 16, 24, and 32.
+**/
+  bool has_BitsPerCoordinate() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BitsPerCoordinate", "", NULL));
+  }
+
+  long BitsPerCoordinate() const {
+    long ret;
+    if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BitsPerCoordinate", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return 0;
+  }
+
+/** (Required) The number of bits used to represent each color component.
+ *  Valid values are 1, 2, 4, 8, 12, and 16.
+**/
+  bool has_BitsPerComponent() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BitsPerComponent", "", NULL));
+  }
+
+  long BitsPerComponent() const {
+    long ret;
+    if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BitsPerComponent", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return 0;
+  }
+
+/** (Required) The number of bits used to represent the edge flag for each
+ *  patch (see below). Valid values of BitsPerFlag are 2, 4, and 8, but only the
+ *  least significant 2 bits in each flag value are used. Valid values for the edge
+ *  flag itself are 0, 1, 2, and 3.
+**/
+  bool has_BitsPerFlag() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BitsPerFlag", "", NULL));
+  }
+
+  long BitsPerFlag() const {
+    long ret;
+    if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BitsPerFlag", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return 0;
+  }
+
+/** (Required) An array of numbers specifying how to map coordinates and
+ *  color components into the appropriate ranges of values. The decoding
+ *  method is similar to that used in image dictionaries (see "Decode Arrays"
+ *  on page 271). The ranges are specified as follows:
+ *      [ xmin xmax ymin ymax c1,min c1,max ... cn,min cn,max ]
+ *  Note that only one pair of c values should be specified if a Function entry
+ *  is present.
+**/
+  bool has_Decode() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Decode", "", NULL));
+  }
+
+  SkPdfArray* Decode() const {
+    SkPdfArray* ret;
+    if (ArrayFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Decode", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return NULL;
+  }
+
+/** (Optional) A 1-in, n-out function or an array of n 1-in, 1-out functions
+ *  (where n is the number of color components in the shading dictionary's
+ *  color space). If this entry is present, the color data for each vertex must be
+ *  specified by a single parametric variable rather than by n separate color
+ *  components; the designated function(s) will be called with each interpo-
+ *  lated value of the parametric variable to determine the actual color at each
+ *  point. Each input value will be forced into the range interval specified for
+ *  the corresponding color component in the shading dictionary's Decode
+ *  array. Each function's domain must be a superset of that interval. If the
+ *  value returned by the function for a given color component is out of
+ *  range, it will be adjusted to the nearest valid value.
+ *  This entry may not be used with an Indexed color space.
+**/
+  bool has_Function() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Function", "", NULL));
+  }
+
+  SkPdfFunction Function() const {
+    SkPdfFunction ret;
+    if (FunctionFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Function", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return SkPdfFunction();
+  }
+
+};
+
+#endif  // __DEFINED__SkPdfType6ShadingDictionary