Revert of Refactor content/common/gpu into gpu/ipc/service

gpu/ipc/service/ca_layer_tree_mac.h

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef GPU_IPC_SERVICE_CA_LAYER_TREE_MAC_H_
-#define GPU_IPC_SERVICE_CA_LAYER_TREE_MAC_H_
-
-#include <IOSurface/IOSurface.h>
-#include <QuartzCore/QuartzCore.h>
-#include <deque>
-#include <vector>
-
-#include "base/mac/scoped_cftyperef.h"
-#include "base/mac/scoped_nsobject.h"
-#include "base/memory/scoped_ptr.h"
-#include "gpu/gpu_export.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/geometry/rect_f.h"
-#include "ui/gfx/mac/io_surface.h"
-#include "ui/gfx/transform.h"
-
-@class AVSampleBufferDisplayLayer;
-
-namespace gpu {
-
-// The CALayerTree will construct a hierarchy of CALayers from a linear list,
-// using the algorithm and structure referenced described in
-// https://docs.google.com/document/d/1DtSN9zzvCF44_FQPM7ie01UxGHagQ66zfF5L9HnigQY/edit?usp=sharing
-class GPU_EXPORT CALayerTree {
- public:
-  CALayerTree();
-
-  // This will remove all CALayers from this tree from their superlayer.
-  ~CALayerTree();
-
-  // Append the description of a new CALayer to the tree. This will not
-  // create any new CALayers until CommitScheduledCALayers is called. This
-  // cannot be called anymore after CommitScheduledCALayers has been called.
-  bool ScheduleCALayer(bool is_clipped,
-                       const gfx::Rect& clip_rect,
-                       unsigned sorting_context_id,
-                       const gfx::Transform& transform,
-                       base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
-                       const gfx::RectF& contents_rect,
-                       const gfx::Rect& rect,
-                       unsigned background_color,
-                       unsigned edge_aa_mask,
-                       float opacity);
-
-  // Create a CALayer tree for the scheduled layers, and set |superlayer| to
-  // have only this tree as its sublayers. If |old_tree| is non-null, then try
-  // to re-use the CALayers of |old_tree| as much as possible. |old_tree| will
-  // be destroyed at the end of the function, and any CALayers in it which were
-  // not re-used by |this| will be removed from the CALayer hierarchy.
-  void CommitScheduledCALayers(CALayer* superlayer,
-                               scoped_ptr<CALayerTree> old_tree,
-                               float scale_factor);
-
- private:
-  struct RootLayer;
-  struct ClipAndSortingLayer;
-  struct TransformLayer;
-  struct ContentLayer;
-
-  struct RootLayer {
-    RootLayer();
-
-    // This will remove |ca_layer| from its superlayer, if |ca_layer| is
-    // non-nil.
-    ~RootLayer();
-
-    // Append a new content layer, without modifying the actual CALayer
-    // structure.
-    bool AddContentLayer(bool is_clipped,
-                         const gfx::Rect& clip_rect,
-                         unsigned sorting_context_id,
-                         const gfx::Transform& transform,
-                         base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
-                         const gfx::RectF& contents_rect,
-                         const gfx::Rect& rect,
-                         unsigned background_color,
-                         unsigned edge_aa_mask,
-                         float opacity);
-
-    // Allocate CALayers for this layer and its children, and set their
-    // properties appropriately. Re-use the CALayers from |old_layer| if
-    // possible. If re-using a CALayer from |old_layer|, reset its |ca_layer|
-    // to nil, so that its destructor will not remove an active CALayer.
-    void CommitToCA(CALayer* superlayer,
-                    RootLayer* old_layer,
-                    float scale_factor);
-
-    std::vector<ClipAndSortingLayer> clip_and_sorting_layers;
-    base::scoped_nsobject<CALayer> ca_layer;
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(RootLayer);
-  };
-  struct ClipAndSortingLayer {
-    ClipAndSortingLayer(bool is_clipped,
-                        gfx::Rect clip_rect,
-                        unsigned sorting_context_id,
-                        bool is_singleton_sorting_context);
-    ClipAndSortingLayer(ClipAndSortingLayer&& layer);
-
-    // See the behavior of RootLayer for the effects of these functions on the
-    // |ca_layer| member and |old_layer| argument.
-    ~ClipAndSortingLayer();
-    void AddContentLayer(const gfx::Transform& transform,
-                         base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
-                         const gfx::RectF& contents_rect,
-                         const gfx::Rect& rect,
-                         unsigned background_color,
-                         unsigned edge_aa_mask,
-                         float opacity);
-    void CommitToCA(CALayer* superlayer,
-                    ClipAndSortingLayer* old_layer,
-                    float scale_factor);
-
-    std::vector<TransformLayer> transform_layers;
-    bool is_clipped = false;
-    gfx::Rect clip_rect;
-    unsigned sorting_context_id = 0;
-    bool is_singleton_sorting_context = false;
-    base::scoped_nsobject<CALayer> ca_layer;
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(ClipAndSortingLayer);
-  };
-  struct TransformLayer {
-    TransformLayer(const gfx::Transform& transform);
-    TransformLayer(TransformLayer&& layer);
-
-    // See the behavior of RootLayer for the effects of these functions on the
-    // |ca_layer| member and |old_layer| argument.
-    ~TransformLayer();
-    void AddContentLayer(base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
-                         const gfx::RectF& contents_rect,
-                         const gfx::Rect& rect,
-                         unsigned background_color,
-                         unsigned edge_aa_mask,
-                         float opacity);
-    void CommitToCA(CALayer* superlayer,
-                    TransformLayer* old_layer,
-                    float scale_factor);
-
-    gfx::Transform transform;
-    std::vector<ContentLayer> content_layers;
-    base::scoped_nsobject<CALayer> ca_layer;
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(TransformLayer);
-  };
-  struct ContentLayer {
-    ContentLayer(base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
-                 const gfx::RectF& contents_rect,
-                 const gfx::Rect& rect,
-                 unsigned background_color,
-                 unsigned edge_aa_mask,
-                 float opacity);
-    ContentLayer(ContentLayer&& layer);
-
-    // See the behavior of RootLayer for the effects of these functions on the
-    // |ca_layer| member and |old_layer| argument.
-    ~ContentLayer();
-    void CommitToCA(CALayer* parent,
-                    ContentLayer* old_layer,
-                    float scale_factor);
-
-    // Ensure that the IOSurface be marked as in-use as soon as it is received.
-    // When they are committed to the window server, that will also increment
-    // their use count.
-    const gfx::ScopedInUseIOSurface io_surface;
-    gfx::RectF contents_rect;
-    gfx::Rect rect;
-    unsigned background_color = 0;
-    // Note that the CoreAnimation edge antialiasing mask is not the same as
-    // the edge antialiasing mask passed to the constructor.
-    CAEdgeAntialiasingMask ca_edge_aa_mask = 0;
-    float opacity = 1;
-    base::scoped_nsobject<CALayer> ca_layer;
-
-    // If this layer's contents can be represented as an
-    // AVSampleBufferDisplayLayer, then |ca_layer| will point to |av_layer|.
-    base::scoped_nsobject<AVSampleBufferDisplayLayer> av_layer;
-    bool use_av_layer = false;
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(ContentLayer);
-  };
-
-  RootLayer root_layer_;
-  float scale_factor_ = 1;
-  bool has_committed_ = false;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(CALayerTree);
-};
-
-}  // namespace gpu
-
-#endif  // GPU_IPC_SERVICE_CA_LAYER_TREE_MAC_H_