summaryrefslogtreecommitdiff
path: root/layout/ipc/RenderFrameParent.h
blob: 274f8ff6df35afd57999800737717c6743a5b15e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=8 et :
 */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_layout_RenderFrameParent_h
#define mozilla_layout_RenderFrameParent_h

#include "mozilla/Attributes.h"
#include <map>

#include "mozilla/layers/APZUtils.h"
#include "mozilla/layers/LayersTypes.h"
#include "mozilla/layout/PRenderFrameParent.h"
#include "nsDisplayList.h"

class nsFrameLoader;
class nsSubDocumentFrame;

namespace mozilla {

class InputEvent;

namespace layers {
class AsyncDragMetrics;
class TargetConfig;
struct TextureFactoryIdentifier;
struct ScrollableLayerGuid;
} // namespace layers

namespace layout {

class RenderFrameParent : public PRenderFrameParent
{
  typedef mozilla::layers::AsyncDragMetrics AsyncDragMetrics;
  typedef mozilla::layers::FrameMetrics FrameMetrics;
  typedef mozilla::layers::ContainerLayer ContainerLayer;
  typedef mozilla::layers::Layer Layer;
  typedef mozilla::layers::LayerManager LayerManager;
  typedef mozilla::layers::TargetConfig TargetConfig;
  typedef mozilla::ContainerLayerParameters ContainerLayerParameters;
  typedef mozilla::layers::TextureFactoryIdentifier TextureFactoryIdentifier;
  typedef mozilla::layers::ScrollableLayerGuid ScrollableLayerGuid;
  typedef mozilla::layers::TouchBehaviorFlags TouchBehaviorFlags;
  typedef mozilla::layers::ZoomConstraints ZoomConstraints;
  typedef FrameMetrics::ViewID ViewID;

public:


  /**
   * Select the desired scrolling behavior.  If ASYNC_PAN_ZOOM is
   * chosen, then RenderFrameParent will watch input events and use
   * them to asynchronously pan and zoom.
   */
  RenderFrameParent(nsFrameLoader* aFrameLoader, bool* aSuccess);
  virtual ~RenderFrameParent();

  bool Init(nsFrameLoader* aFrameLoader);
  bool IsInitted();
  void Destroy();

  void BuildDisplayList(nsDisplayListBuilder* aBuilder,
                        nsSubDocumentFrame* aFrame,
                        const nsRect& aDirtyRect,
                        const nsDisplayListSet& aLists);

  already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
                                     nsIFrame* aFrame,
                                     LayerManager* aManager,
                                     const nsIntRect& aVisibleRect,
                                     nsDisplayItem* aItem,
                                     const ContainerLayerParameters& aContainerParameters);

  void OwnerContentChanged(nsIContent* aContent);

  bool HitTest(const nsRect& aRect);

  void GetTextureFactoryIdentifier(TextureFactoryIdentifier* aTextureFactoryIdentifier);

  inline uint64_t GetLayersId() { return mLayersId; }

  void TakeFocusForClickFromTap();

  void EnsureLayersConnected();

protected:
  void ActorDestroy(ActorDestroyReason why) override;

  virtual bool RecvNotifyCompositorTransaction() override;

private:
  void TriggerRepaint();
  void DispatchEventForPanZoomController(const InputEvent& aEvent);

  uint64_t GetLayerTreeId() const;

  // When our child frame is pushing transactions directly to the
  // compositor, this is the ID of its layer tree in the compositor's
  // context.
  uint64_t mLayersId;

  RefPtr<nsFrameLoader> mFrameLoader;
  RefPtr<ContainerLayer> mContainer;

  // True after Destroy() has been called, which is triggered
  // originally by nsFrameLoader::Destroy().  After this point, we can
  // no longer safely ask the frame loader to find its nearest layer
  // manager, because it may have been disconnected from the DOM.
  // It's still OK to *tell* the frame loader that we've painted after
  // it's destroyed; it'll just ignore us, and we won't be able to
  // find an nsIFrame to invalidate.  See ShadowLayersUpdated().
  //
  // Prefer the extra bit of state to null'ing out mFrameLoader in
  // Destroy() so that less code needs to be special-cased for after
  // Destroy().
  // 
  // It's possible for mFrameLoader==null and
  // mFrameLoaderDestroyed==false.
  bool mFrameLoaderDestroyed;

  bool mAsyncPanZoomEnabled;
  bool mInitted;
};

} // namespace layout
} // namespace mozilla

/**
 * A DisplayRemote exists solely to graft a child process's shadow
 * layer tree (for a given RenderFrameParent) into its parent
 * process's layer tree.
 */
class nsDisplayRemote : public nsDisplayItem
{
  typedef mozilla::layout::RenderFrameParent RenderFrameParent;

public:
  nsDisplayRemote(nsDisplayListBuilder* aBuilder, nsSubDocumentFrame* aFrame,
                  RenderFrameParent* aRemoteFrame);

  virtual LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
                                   LayerManager* aManager,
                                   const ContainerLayerParameters& aParameters) override
  { return mozilla::LAYER_ACTIVE_FORCE; }

  virtual already_AddRefed<Layer>
  BuildLayer(nsDisplayListBuilder* aBuilder, LayerManager* aManager,
             const ContainerLayerParameters& aContainerParameters) override;

  NS_DISPLAY_DECL_NAME("Remote", TYPE_REMOTE)

private:
  RenderFrameParent* mRemoteFrame;
  mozilla::layers::EventRegionsOverride mEventRegionsOverride;
};


#endif  // mozilla_layout_RenderFrameParent_h