Remove experimental/PdfViewer

experimental/PdfViewer/pdfparser/native/SkPdfNativeDoc.h

-/*
- * Copyright 2013 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkPdfNativeDoc_DEFINED
-#define SkPdfNativeDoc_DEFINED
-
-#include "SkRect.h"
-#include "SkTDArray.h"
-
-class SkCanvas;
-
-class SkPdfAllocator;
-class SkPdfMapper;
-class SkPdfNativeObject;
-class SkPdfReal;
-class SkPdfInteger;
-class SkPdfString;
-class SkPdfResourceDictionary;
-class SkPdfCatalogDictionary;
-class SkPdfPageObjectDictionary;
-class SkPdfPageTreeNodeDictionary;
-
-class SkPdfNativeTokenizer;
-
-class SkStream;
-
-// TODO(edisonn): Implement a smart stream that can seek, and that can also fall back to reading
-// the bytes in order. For example, we can try to read the stream optimistically, but if there
-// are issues in the pdf, we must read the pdf from the beginning, and fix whatever errors we can.
-// This would be useful to show quickly page 100 in a pdf (www.example.com/foo.pdf#page100)
-// But if the pdf is missing the xref, then we will have to read most of pdf to be able to render
-// page 100.
-
-/** \class SkPdfNativeDoc
- *
- *  The SkPdfNativeDoc class is used to load a PDF in memory and it represents a PDF Document.
- *
- */
-class SkPdfNativeDoc {
-private:
-    // Information about public objects in pdf that can be referenced with ID GEN R
-    struct PublicObjectEntry {
-        // Offset in the file where the object starts.
-        long fOffset;
-
-        // Offset in file where the object ends. Could be used to quickly fail if there is a
-        // problem in pdf structure.
-        // long endOffset;  // TODO(edisonn): determine the end of the object,
-                            // to be used when the doc is corrupted, for fast failure.
-
-        // Refered object.
-        SkPdfNativeObject* fObj;
-
-        // If refered object is a reference, we resolve recursively the reference until we find
-        // the real object.
-        SkPdfNativeObject* fResolvedReference;
-
-        // Used to break a recursive reference to itself.
-        bool fIsReferenceResolved;
-    };
-
-public:
-    // TODO(edisonn) should be deprecated
-    SkPdfNativeDoc(const char* path);
-
-    // TODO(edisonn) should be deprecated
-    // FIXME: Untested.
-    // Does not affect ownership of stream.
-    SkPdfNativeDoc(SkStream* stream);
-
-    ~SkPdfNativeDoc();
-
-    // returns the number of pages in the pdf
-    int pages() const;
-
-    // returns the page resources
-    SkPdfResourceDictionary* pageResources(int page);
-
-    // returns the page's mediabox i points - the page physical boundaries.
-    SkRect MediaBox(int page);
-
-    //returns objects that are references and can be queried.
-    size_t objects() const;
-
-    // returns an object.
-    // TODO(edisonn): pdf updates are not supported yet.
-    //                add generation parameter to support page updates.
-    SkPdfNativeObject* object(int id /*, int generation*/ );
-
-    // returns the object that holds all the page informnation
-    // TODO(edisonn): pdf updates are not supported yet.
-    //                add generation parameter to support page updates.
-    SkPdfPageObjectDictionary* page(int page/*, int generation*/);
-
-    // TODO(edisonn): deprecate the mapper - was used when we supported multiple
-    // parsers (podofo)
-    // The mapper maps allows an object to be mapped to a different dictionary type
-    // and it could verify the integrity of the object.
-    const SkPdfMapper* mapper() const;
-
-    // Allocator of the pdf - this holds all objects that are publicly referenced
-    // and all the objects that they refer
-    SkPdfAllocator* allocator() const;
-
-    // Allows a renderer to create values to be dumped on the stack for operators to process them.
-    SkPdfReal* createReal(double value) const;
-    SkPdfInteger* createInteger(int value) const;
-    // the string does not own the char*
-    SkPdfString* createString(const unsigned char* sz, size_t len) const;
-
-    // Resolve a reference object. Will recursively resolve the reference
-    // until a real object is found
-    SkPdfNativeObject* resolveReference(SkPdfNativeObject* ref);
-
-    // Reports an approximation of all the memory usage.
-    size_t bytesUsed() const;
-
-private:
-
-    // Takes ownership of bytes.
-    void init(const void* bytes, size_t length);
-
-    // loads a pdf that has missing xref
-    void loadWithoutXRef();
-
-    const unsigned char* readCrossReferenceSection(const unsigned char* xrefStart,
-                                                   const unsigned char* trailerEnd);
-    const unsigned char* readTrailer(const unsigned char* trailerStart,
-                                     const unsigned char* trailerEnd,
-                                     bool storeCatalog, long* prev, bool skipKeyword);
-
-    // TODO(edisonn): pdfs with updates not supported right now, generation ignored.
-    void addCrossSectionInfo(int id, int generation, int offset, bool isFreed);
-    static void reset(PublicObjectEntry* obj) {
-        obj->fObj = NULL;
-        obj->fResolvedReference = NULL;
-        obj->fOffset = -1;
-        obj->fIsReferenceResolved = false;
-    }
-
-    SkPdfNativeObject* readObject(int id/*, int generation*/);
-
-    void fillPages(SkPdfPageTreeNodeDictionary* tree);
-
-    SkPdfAllocator* fAllocator;
-    SkPdfMapper* fMapper;
-    const unsigned char* fFileContent;
-    size_t fContentLength;
-    SkPdfNativeObject* fRootCatalogRef;
-    SkPdfCatalogDictionary* fRootCatalog;
-
-    mutable SkTDArray<PublicObjectEntry> fObjects;
-    SkTDArray<SkPdfPageObjectDictionary*> fPages;
-};
-
-#endif  // SkPdfNativeDoc_DEFINED