[PDF] Make stream compression optional on a per device basis.

There are a lot of small pieces to make this change work:
- SkPDFDocument (and SkPDFCatalog) take flags to disable compression (and font embedding - not implemented yet, can disable font subsetting for now).
- SkPDFStream now defers compression until the size/emit step.
- Classes that *had* a stream (because they didn't know the stream size at construction time) now *are* streams to make the substitution work correctly.
- The SkPDFShader implementation got pulled apart into two classes, one that is a SkPDFDict, and one that is a SkPDFStream (making the common ancestor SkPDFObject).
- Added helper methods in SkPDFObject for children that have simple resource lists.
- Added an iterator to SkPDFDict so that a substitute SkPDFStream can get a copy of the stream dictionary.
- Change SkPDFDocument to have a pointer to an SkPDFCatalog to remove a new circular header reference.

Review URL: http://codereview.appspot.com/4700045

git-svn-id: http://skia.googlecode.com/svn/trunk@1911 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 1 insertions, 19 deletions

diff --git a/include/pdf/SkPDFFormXObject.h b/include/pdf/SkPDFFormXObject.h
index 41719f0820..1e0ad4604a 100644
--- a/include/pdf/SkPDFFormXObject.h
+++ b/include/pdf/SkPDFFormXObject.h
@@ -36,7 +36,7 @@ class SkPDFCatalog;
 // The caller could keep track of the form XObjects it creates and
 // canonicalize them, but the Skia API doesn't provide enough context to
 // automatically do it (trivially).
-class SkPDFFormXObject : public SkPDFObject {
+class SkPDFFormXObject : public SkPDFStream {
 public:
     /** Create a PDF form XObject. Entries for the dictionary entries are
      *  automatically added.
@@ -46,27 +46,9 @@ public:
     virtual ~SkPDFFormXObject();
 
     // The SkPDFObject interface.
-    virtual void emitObject(SkWStream* stream, SkPDFCatalog* catalog,
-                            bool indirect);
-    virtual size_t getOutputSize(SkPDFCatalog* catalog, bool indirect);
     virtual void getResources(SkTDArray<SkPDFObject*>* resourceList);
 
-    /** Add the value to the stream dictionary with the given key.  Refs value.
-     *  @param key   The key for this dictionary entry.
-     *  @param value The value for this dictionary entry.
-     *  @return The value argument is returned.
-     */
-    SkPDFObject* insert(SkPDFName* key, SkPDFObject* value);
-
-    /** Add the value to the stream dictionary with the given key.  Refs value.
-     *  @param key   The text of the key for this dictionary entry.
-     *  @param value The value for this dictionary entry.
-     *  @return The value argument is returned.
-     */
-    SkPDFObject* insert(const char key[], SkPDFObject* value);
-
 private:
-    SkRefPtr<SkPDFStream> fStream;
     SkTDArray<SkPDFObject*> fResources;
 };