SkPDF: unify drawText and drawPosText

src/pdf/SkPDFFont.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkPDFFont_DEFINED
 #define SkPDFFont_DEFINED
@@ skipping 88 matching lines @@
     bool hasGlyph(uint16_t glyphID);
 
     /** Convert (in place) the input glyph IDs into the font encoding.  If the
      *  font has more glyphs than can be encoded (like a type 1 font with more
      *  than 255 glyphs) this method only converts up to the first out of range
      *  glyph ID.
      *  @param glyphIDs       The input text as glyph IDs.
      *  @param numGlyphs      The number of input glyphs.
      *  @return               Returns the number of glyphs consumed.
      */
-    int glyphsToPDFFontEncoding(uint16_t* glyphIDs, int numGlyphs);
+    int glyphsToPDFFontEncoding(SkGlyphID* glyphIDs, int numGlyphs) const;
+    /**
+     * Like above, but does not modify glyphIDs array.
+     */
+    int glyphsToPDFFontEncodingCount(const SkGlyphID* glyphIDs,
+                                     int numGlyphs) const;
 
     /** Get the font resource for the passed typeface and glyphID. The
      *  reference count of the object is incremented and it is the caller's
      *  responsibility to unreference it when done.  This is needed to
      *  accommodate the weak reference pattern used when the returned object
      *  is new and has no other references.
      *  @param typeface  The typeface to find.
      *  @param glyphID   Specify which section of a large font is of interest.
      */
     static SkPDFFont* GetFontResource(SkPDFCanon* canon,
@@ skipping 80 matching lines @@
     uint16_t fLastGlyphID;
     sk_sp<const SkAdvancedTypefaceMetrics> fFontInfo;
     sk_sp<SkPDFDict> fDescriptor;
 
     SkAdvancedTypefaceMetrics::FontType fFontType;
 
     typedef SkPDFDict INHERITED;
 };
 
 #endif