Basic support for Type3 Fonts in Pdf + various refactorings

experimental/PdfViewer/SkPdfType4ShadingDictionary_autogen.h

-#ifndef __DEFINED__SkPdfType4ShadingDictionary
-#define __DEFINED__SkPdfType4ShadingDictionary
-
-#include "SkPdfEnums_autogen.h"
-#include "SkPdfArray_autogen.h"
-#include "SkPdfShadingDictionary_autogen.h"
-
-// Additional entries specific to a type 4 shading dictionary
-class SkPdfType4ShadingDictionary : public SkPdfShadingDictionary {
-public:
-  virtual SkPdfObjectType getType() const { return kType4ShadingDictionary_SkPdfObjectType;}
-  virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kType4ShadingDictionary_SkPdfObjectType + 1);}
-public:
-  virtual SkPdfType4ShadingDictionary* asType4ShadingDictionary() {return this;}
-  virtual const SkPdfType4ShadingDictionary* asType4ShadingDictionary() 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 SkPdfType5ShadingDictionary* asType5ShadingDictionary() {return NULL;}
-  virtual const SkPdfType5ShadingDictionary* asType5ShadingDictionary() const {return NULL;}
-
-  virtual SkPdfType6ShadingDictionary* asType6ShadingDictionary() {return NULL;}
-  virtual const SkPdfType6ShadingDictionary* asType6ShadingDictionary() const {return NULL;}
-
-public:
-private:
-public:
-  SkPdfType4ShadingDictionary(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfShadingDictionary(podofoDoc, podofoObj) {}
-
-  virtual bool valid() const {return true;}
-
-  SkPdfType4ShadingDictionary& operator=(const SkPdfType4ShadingDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
-
-/** (Required) The number of bits used to represent each vertex coordinate.
- *  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 ver-
- *  tex (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, and 2.
-**/
-  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 vertex coordinates
- *  and color components into the appropriate ranges of values. The de-
- *  coding 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));
-  }
-
-  SkRect Decode() const {
-    SkRect ret;
-    if (SkRectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Decode", "", &ret)) return ret;
-    // TODO(edisonn): warn about missing required field, assert for known good pdfs
-    return SkRect();
-  }
-
-/** (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__SkPdfType4ShadingDictionary