Adding option in SkPicture to record device-space bounds of draw commands.

src/core/SkBBoxRecord.h

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkBBoxRecord_DEFINED
 #define SkBBoxRecord_DEFINED
 
 #include "SkPictureRecord.h"
 
 /**
   * This is an abstract SkPictureRecord subclass that intercepts draw calls and computes an
   * axis-aligned bounding box for each draw that it sees, subclasses implement handleBBox()
   * which will be called every time we get a new bounding box.
   */
 class SkBBoxRecord : public SkPictureRecord {
 public:
 
     SkBBoxRecord(uint32_t recordFlags, SkDevice* device)
             : INHERITED(recordFlags, device) { }
     virtual ~SkBBoxRecord() { }
 
     /**
      * This is called each time we get a bounding box, it will be axis-aligned,
      * in device coordinates, and expanded to include stroking, shadows, etc.
      */
+#if SK_RECORD_BOUNDS_IN_PICTURE
+    virtual void handleBBox(uint32_t offset) = 0;
+#else
     virtual void handleBBox(const SkRect& bbox) = 0;
+#endif
 
     virtual void drawOval(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE;
     virtual void drawRRect(const SkRRect& rrect, const SkPaint& paint) SK_OVERRIDE;
     virtual void drawRect(const SkRect& rect, const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPath(const SkPath& path, const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
                             const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
     virtual void clear(SkColor) SK_OVERRIDE;
     virtual void drawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
@@ skipping 28 matching lines @@
      * Takes a bounding box in current canvas view space, accounts for stroking and effects, and
      * computes an axis-aligned bounding box in device coordinates, then passes it to handleBBox()
      * returns false if the draw is completely clipped out, and may safely be ignored.
      **/
     bool transformBounds(const SkRect& bounds, const SkPaint* paint);
 
     typedef SkPictureRecord INHERITED;
 };
 
 #endif