Basic support for Type3 Fonts in Pdf + various refactorings

experimental/PdfViewer/SkPdfUtils.h

Index: experimental/PdfViewer/SkPdfUtils.h
===================================================================
--- experimental/PdfViewer/SkPdfUtils.h	(revision 0)
+++ experimental/PdfViewer/SkPdfUtils.h	(revision 0)
@@ -0,0 +1,126 @@
+#ifndef __DEFINED__SkPdfUtils
+#define __DEFINED__SkPdfUtils
+
+#include "podofo.h"
+using namespace PoDoFo;
+
+#include "SkPdfBasics.h"
+
+const PdfObject* resolveReferenceObject(const PdfMemDocument* pdfDoc,
+                                  const PdfObject* obj,
+                                  bool resolveOneElementArrays = false);
+
+bool LongFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        long* data);
+
+bool DoubleFromDictionary(const PdfMemDocument* pdfDoc,
+                          const PdfDictionary& dict,
+                          const char* key,
+                          const char* abr,
+                          double* data);
+
+bool BoolFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        bool* data);
+
+bool NameFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        std::string* data);
+
+bool StringFromDictionary(const PdfMemDocument* pdfDoc,
+                          const PdfDictionary& dict,
+                          const char* key,
+                          const char* abr,
+                          std::string* data);
+
+class SkPdfDictionary;
+bool DictionaryFromDictionary(const PdfMemDocument* pdfDoc,
+                              const PdfDictionary& dict,
+                              const char* key,
+                              const char* abr,
+                              SkPdfDictionary** data);
+
+template <typename T>
+bool DictionaryFromDictionary2(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        T** data);
+
+class SkPdfObject;
+bool ObjectFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        SkPdfObject** data);
+
+
+struct SkPdfFileSpec {};
+class SkPdfArray;
+class SkPdfStream;
+struct SkPdfDate {};
+struct SkPdfTree {};
+struct SkPdfFunction {};
+
+bool ArrayFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        SkPdfArray** data);
+
+bool SkMatrixFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        SkMatrix** data);
+
+bool FileSpecFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        SkPdfFileSpec* data);
+
+
+bool StreamFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        SkPdfStream** data);
+
+bool TreeFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        SkPdfTree** data);
+
+bool DateFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        SkPdfDate* data);
+
+bool SkRectFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        SkRect** data);
+
+bool FunctionFromDictionary(const PdfMemDocument* pdfDoc,
+                        const PdfDictionary& dict,
+                        const char* key,
+                        const char* abr,
+                        SkPdfFunction* data);
+
+bool skpdfmap(const PdfMemDocument& podofoDoc, const PdfObject& podofoObj, SkPdfObject** out);
+SkMatrix SkMatrixFromPdfArray(SkPdfArray* pdfArray);
+
+PdfResult doType3Char(PdfContext* pdfContext, SkCanvas* canvas, SkPdfObject* skobj, SkRect bBox, SkMatrix matrix, double textSize);
+
+#endif   // __DEFINED__SkPdfUtils