Basic support for Type3 Fonts in Pdf + various refactorings

experimental/PdfViewer/autogen/SkPdfType1FormDictionary_autogen.h

+#ifndef __DEFINED__SkPdfType1FormDictionary
+#define __DEFINED__SkPdfType1FormDictionary
+
+#include "SkPdfUtils.h"
+#include "SkPdfEnums_autogen.h"
+#include "SkPdfArray_autogen.h"
+#include "SkPdfXObjectDictionary_autogen.h"
+
+// Additional entries specific to a type 1 form dictionary
+class SkPdfType1FormDictionary : public SkPdfXObjectDictionary {
+public:
+  virtual SkPdfObjectType getType() const { return kType1FormDictionary_SkPdfObjectType;}
+  virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kType1FormDictionary_SkPdfObjectType + 1);}
+public:
+  virtual SkPdfType1FormDictionary* asType1FormDictionary() {return this;}
+  virtual const SkPdfType1FormDictionary* asType1FormDictionary() const {return this;}
+
+private:
+  virtual SkPdfImageDictionary* asImageDictionary() {return NULL;}
+  virtual const SkPdfImageDictionary* asImageDictionary() const {return NULL;}
+
+public:
+private:
+public:
+  SkPdfType1FormDictionary(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfXObjectDictionary(podofoDoc, podofoObj) {}
+
+  SkPdfType1FormDictionary(const SkPdfType1FormDictionary& from) : SkPdfXObjectDictionary(from.fPodofoDoc, from.fPodofoObj) {}
+
+  virtual bool valid() const {return true;}
+
+  SkPdfType1FormDictionary& operator=(const SkPdfType1FormDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
+
+/** (Optional) The type of PDF object that this dictionary describes; if present,
+ *  must be XObject for a form XObject.
+**/
+  bool has_Type() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Type", "", NULL));
+  }
+
+  std::string Type() const {
+    std::string ret;
+    if (NameFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Type", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return "";
+  }
+
+/** (Required) The type of XObject that this dictionary describes; must be Form
+ *  for a form XObject.
+**/
+  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) A code identifying the type of form XObject that this dictionary
+ *  describes. The only valid value defined at the time of publication is 1. Default
+ *  value: 1.
+**/
+  bool has_FormType() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "FormType", "", NULL));
+  }
+
+  long FormType() const {
+    long ret;
+    if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "FormType", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return 0;
+  }
+
+/** (Required in PDF 1.0; optional otherwise) The name by which this form
+ *  XObject is referenced in the XObject subdictionary of the current resource
+ *  dictionary (see Section 3.7.2, "Resource Dictionaries").
+ *  Note: This entry is obsolescent and its use is no longer recommended. (See
+ *  implementation note 38 in Appendix H.)
+**/
+  bool has_Name() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Name", "", NULL));
+  }
+
+  std::string Name() const {
+    std::string ret;
+    if (NameFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Name", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return "";
+  }
+
+/** (Required if PieceInfo is present; optional otherwise; PDF 1.3) The date and
+ *  time (see Section 3.8.2, "Dates") when the form XObject's contents were
+ *  most recently modified. If a page-piece dictionary (PieceInfo) is present, the
+ *  modification date is used to ascertain which of the application data diction-
+ *  aries it contains correspond to the current content of the form (see Section
+ *  9.4, "Page-Piece Dictionaries").
+**/
+  bool has_LastModified() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "LastModified", "", NULL));
+  }
+
+  SkPdfDate LastModified() const {
+    SkPdfDate ret;
+    if (DateFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "LastModified", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return SkPdfDate();
+  }
+
+/** (Required) An array of four numbers in the form coordinate system (see
+ *  below), giving the coordinates of the left, bottom, right, and top edges,
+ *  respectively, of the form XObject's bounding box. These boundaries are used
+ *  to clip the form XObject and to determine its size for caching.
+**/
+  bool has_BBox() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BBox", "", NULL));
+  }
+
+  SkRect* BBox() const {
+    SkRect* ret;
+    if (SkRectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BBox", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return NULL;
+  }
+
+/** (Optional) An array of six numbers specifying the form matrix, which maps
+ *  form space into user space (see Section 4.2.3, "Transformation Matrices").
+ *  Default value: the identity matrix [1 0 0 1 0 0].
+**/
+  bool has_Matrix() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Matrix", "", NULL));
+  }
+
+  SkMatrix* Matrix() const {
+    SkMatrix* ret;
+    if (SkMatrixFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Matrix", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return NULL;
+  }
+
+/** (Optional but strongly recommended; PDF 1.2) A dictionary specifying any
+ *  resources (such as fonts and images) required by the form XObject (see Sec-
+ *  tion 3.7, "Content Streams and Resources").
+ *  In PDF 1.1 and earlier, all named resources used in the form XObject must be
+ *  included in the resource dictionary of each page object on which the form
+ *  XObject appears, whether or not they also appear in the resource dictionary
+ *  of the form XObject itself. It can be useful to specify these resources in the
+ *  form XObject's own resource dictionary as well, in order to determine which
+ *  resources are used inside the form XObject. If a resource is included in both
+ *  dictionaries, it should have the same name in both locations.
+ *       In PDF 1.2 and later versions, form XObjects can be independent of the
+ *       content streams in which they appear, and this is strongly recommended
+ *       although not required. In an independent form XObject, the resource dic-
+ *       tionary of the form XObject is required and contains all named resources
+ *       used by the form XObject. These resources are not "promoted" to the outer
+ *       content stream's resource dictionary, although that stream's resource diction-
+ *       ary will refer to the form XObject itself.
+**/
+  bool has_Resources() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Resources", "", NULL));
+  }
+
+  SkPdfResourceDictionary* Resources() const {
+    SkPdfResourceDictionary* ret;
+    if (DictionaryFromDictionary2(fPodofoDoc, fPodofoObj->GetDictionary(), "Resources", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return NULL;
+  }
+
+/** (Optional; PDF 1.4) A group attributes dictionary indicating that the contents
+ *  of the form XObject are to be treated as a group and specifying the attributes
+ *  of that group (see Section 4.9.2, "Group XObjects").
+ *  Note: If a Ref entry (see below) is present, the group attributes also apply to the
+ *  external page imported by that entry. This allows such an imported page to be
+ *  treated as a group without further modification.
+**/
+  bool has_Group() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Group", "", NULL));
+  }
+
+  SkPdfDictionary* Group() const {
+    SkPdfDictionary* ret;
+    if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Group", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return NULL;
+  }
+
+/** (Optional; PDF 1.4) A reference dictionary identifying a page to be imported
+ *  from another PDF file, and for which the form XObject serves as a proxy (see
+ *  Section 4.9.3, "Reference XObjects").
+**/
+  bool has_Ref() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Ref", "", NULL));
+  }
+
+  SkPdfDictionary* Ref() const {
+    SkPdfDictionary* ret;
+    if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Ref", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return NULL;
+  }
+
+/** (Optional; PDF 1.4) A metadata stream containing metadata for the form
+ *  XObject (see Section 9.2.2, "Metadata Streams").
+**/
+  bool has_Metadata() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Metadata", "", NULL));
+  }
+
+  SkPdfStream* Metadata() const {
+    SkPdfStream* ret;
+    if (StreamFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Metadata", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return NULL;
+  }
+
+/** (Optional; PDF 1.3) A page-piece dictionary associated with the form
+ *  XObject (see Section 9.4, "Page-Piece Dictionaries").
+**/
+  bool has_PieceInfo() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "PieceInfo", "", NULL));
+  }
+
+  SkPdfDictionary* PieceInfo() const {
+    SkPdfDictionary* ret;
+    if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "PieceInfo", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return NULL;
+  }
+
+/** (Required if the form XObject is a structural content item; PDF 1.3) The integer
+ *  key of the form XObject's entry in the structural parent tree (see "Finding
+ *  Structure Elements from Content Items" on page 600).
+**/
+  bool has_StructParent() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "StructParent", "", NULL));
+  }
+
+  long StructParent() const {
+    long ret;
+    if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "StructParent", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return 0;
+  }
+
+/** (Required if the form XObject contains marked-content sequences that are struc-
+ *  tural content items; PDF 1.3) The integer key of the form XObject's entry in
+ *  the structural parent tree (see "Finding Structure Elements from Content
+ *  Items" on page 600).
+ *  Note: At most one of the entries StructParent or StructParents may be present. A
+ *  form XObject can be either a content item in its entirety or a container for
+ *  marked-content sequences that are content items, but not both.
+**/
+  bool has_StructParents() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "StructParents", "", NULL));
+  }
+
+  long StructParents() const {
+    long ret;
+    if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "StructParents", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return 0;
+  }
+
+/** (Optional; PDF 1.2) An OPI version dictionary for the form XObject (see
+ *  Section 9.10.6, "Open Prepress Interface (OPI)").
+**/
+  bool has_OPI() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "OPI", "", NULL));
+  }
+
+  SkPdfDictionary* OPI() const {
+    SkPdfDictionary* ret;
+    if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "OPI", "", &ret)) return ret;
+    // TODO(edisonn): warn about missing required field, assert for known good pdfs
+    return NULL;
+  }
+
+};
+
+#endif  // __DEFINED__SkPdfType1FormDictionary