cc/picture_pile_impl.h

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CC_PICTURE_PILE_IMPL_H_
   6 #define CC_PICTURE_PILE_IMPL_H_
   7
   8 #include <list>
   9 #include <map>
  10
  11 #include "base/threading/thread.h"
  12 #include "cc/cc_export.h"
  13 #include "cc/picture_pile_base.h"
  14 #include "skia/ext/refptr.h"
  15 #include "third_party/skia/include/core/SkPicture.h"
  16
  17 namespace cc {
  18 struct RenderingStats;
  19
  20 class CC_EXPORT PicturePileImpl : public PicturePileBase {
  21  public:
  22   static scoped_refptr<PicturePileImpl> Create();
  23
  24   // Get paint-safe version of this picture for a specific thread.
  25   PicturePileImpl* GetCloneForDrawingOnThread(base::Thread*);
  26
  27   // Clone a paint-safe version of this picture.
  28   scoped_refptr<PicturePileImpl> CloneForDrawing() const;
  29
  30   // Raster a subrect of this PicturePileImpl into the given canvas.
  31   // It's only safe to call paint on a cloned version.
  32   // It is assumed that contentsScale has already been applied to this canvas.
  33   void Raster(
  34       SkCanvas* canvas,
  35       gfx::Rect content_rect,
  36       float contents_scale,
  37       int64* total_pixels_rasterized);
  38
  39   void GatherPixelRefs(
  40       gfx::Rect content_rect,
  41       float contents_scale,
  42       std::list<skia::LazyPixelRef*>& pixel_refs);
  43
  44   void PushPropertiesTo(PicturePileImpl* other);
  45
  46   skia::RefPtr<SkPicture> GetFlattenedPicture();
  47
  48   void set_slow_down_raster_scale_factor(int factor) {
  49     slow_down_raster_scale_factor_for_debug_ = factor;
  50   }
  51
  52   bool IsCheapInRect(gfx::Rect content_rect, float contents_scale) const;
  53
  54  protected:
  55   friend class PicturePile;
  56
  57   PicturePileImpl();
  58   virtual ~PicturePileImpl();
  59
  60   typedef std::map<base::PlatformThreadId, scoped_refptr<PicturePileImpl> >
  61       CloneMap;
  62   CloneMap clones_;
  63
  64   int slow_down_raster_scale_factor_for_debug_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(PicturePileImpl);
  67 };
  68
  69 }  // namespace cc
  70
  71 #endif  // CC_PICTURE_PILE_IMPL_H_