Switch Layer Hoisting over to SkRecord backend

src/core/SkPictureReplacementPlayback.h

-/*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkPictureReplacementPlayback_DEFINED
-#define SkPictureReplacementPlayback_DEFINED
-
-#include "SkPicturePlayback.h"
-
-// This playback class replaces complete "saveLayer ... restore" runs with a
-// single drawBitmap call.
-class SkPictureReplacementPlayback : public SkPicturePlayback {
-public:
-    // PlaybackReplacements collects op ranges that can be replaced with
-    // a single drawBitmap call (using a precomputed bitmap).
-    class PlaybackReplacements {
-    public:
-        // All the operations between fStart and fStop (inclusive) will be replaced with
-        // a single drawBitmap call using fPos, fBM and fPaint.
-        // fPaint will be NULL if the picture's paint wasn't copyable
-        struct ReplacementInfo {
-            size_t          fStart;
-            size_t          fStop;
-            SkIPoint        fPos;
-            SkBitmap*       fBM;     // fBM is allocated so ReplacementInfo can remain POD
-            const SkPaint*  fPaint;  // Note: this object doesn't own the paint
-
-            SkIRect         fSrcRect;
-        };
-
-        ~PlaybackReplacements() { this->freeAll(); }
-
-        // Add a new replacement range. The replacement ranges should be
-        // sorted in increasing order and non-overlapping (esp. no nested
-        // saveLayers).
-        ReplacementInfo* push();
-
-        // look up a replacement range by its start offset
-        ReplacementInfo* lookupByStart(size_t start);
-
-    private:
-        SkTDArray<ReplacementInfo> fReplacements;
-
-        void freeAll();
-
-#ifdef SK_DEBUG
-        void validate() const;
-#endif
-    };
-
-    // This class doesn't take ownership of either 'replacements' or 'activeOpsList'
-    // The caller must guarantee they exist across any calls to 'draw'.
-    // 'activeOpsList' can be NULL but in that case BBH acceleration will not 
-    // be used ('replacements' can be NULL too but that defeats the purpose
-    // of using this class).
-    SkPictureReplacementPlayback(const SkPicture* picture, 
-                                 PlaybackReplacements* replacements,
-                                 const SkPicture::OperationList* activeOpsList)
-        : INHERITED(picture)
-        , fReplacements(replacements)
-        , fActiveOpsList(activeOpsList) {
-    }
-
-    virtual void draw(SkCanvas* canvas, SkDrawPictureCallback*) SK_OVERRIDE;
-
-private:
-    PlaybackReplacements*           fReplacements;
-    const SkPicture::OperationList* fActiveOpsList;
-
-    // This method checks if the current op pointed at by 'iter' and 'reader'
-    // is within a replacement range. If so, it issues the drawBitmap call,
-    // updates 'iter' and 'reader' to be after the restore operation, and
-    // returns true. If the operation is not in a replacement range (and thus
-    // needs to be drawn normally) false is returned.
-    bool replaceOps(SkPictureStateTree::Iterator* iter,
-                    SkReader32* reader,
-                    SkCanvas* canvas,
-                    const SkMatrix& initialMatrix);
-
-    typedef SkPicturePlayback INHERITED;
-};
-
-#endif