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Side by Side Diff: ui/aura/mus/surface_id_handler.h

Issue 2445163002: Make aura work with mus (Closed)
Patch Set: NON_EXPORTED_BASE_CLASS Created 4 years, 1 month ago
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1 // Copyright 2016 The Chromium Authors. All rights reserved. 1 // Copyright 2016 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef SERVICES_UI_PUBLIC_CPP_SURFACE_ID_HANDLER_H_ 5 #ifndef UI_AURA_MUS_SURFACE_ID_HANDLER_H_
6 #define SERVICES_UI_PUBLIC_CPP_SURFACE_ID_HANDLER_H_ 6 #define UI_AURA_MUS_SURFACE_ID_HANDLER_H_
7 7
8 #include "cc/surfaces/surface_id.h" 8 #include "cc/surfaces/surface_id.h"
9 #include "cc/surfaces/surface_sequence.h" 9 #include "cc/surfaces/surface_sequence.h"
10 #include "ui/gfx/geometry/size.h" 10 #include "ui/gfx/geometry/size.h"
11 11
12 namespace ui { 12 namespace aura {
13 13
14 class Window; 14 class Window;
15 15
16 // Holds information about the current surface held by a Window. 16 // Holds information about the current surface held by a Window.
17 // |surface_id| uniquely identifies the surface in the display 17 // |surface_id| uniquely identifies the surface in the display
18 // compositor. 18 // compositor.
19 // |surface_sequence| is a reference to the surface to retain 19 // |surface_sequence| is a reference to the surface to retain
20 // this surface even after a new surface has been created. 20 // this surface even after a new surface has been created.
21 // |frame_size| is the size of the frame held by the surface. 21 // |frame_size| is the size of the frame held by the surface.
22 // |device_scale_factor| is the scale factor that the frame was 22 // |device_scale_factor| is the scale factor that the frame was
23 // renderered for. 23 // renderered for.
24 struct SurfaceInfo { 24 struct SurfaceInfo {
25 cc::SurfaceId surface_id; 25 cc::SurfaceId surface_id;
26 cc::SurfaceSequence surface_sequence; 26 cc::SurfaceSequence surface_sequence;
27 gfx::Size frame_size; 27 gfx::Size frame_size;
28 float device_scale_factor; 28 float device_scale_factor;
29 }; 29 };
30 30
31 class SurfaceIdHandler { 31 class SurfaceIdHandler {
32 public: 32 public:
33 // Called when a child window allocates a new surface ID. 33 // Called when a child window allocates a new surface ID.
34 // If the handler wishes to retain ownership of the |surface_info|, 34 // If the handler wishes to retain ownership of the |surface_info|,
35 // it can move it. If a child's surface has been cleared then 35 // it can move it. If a child's surface has been cleared then
36 // |surface_info| will refer to a null pointer. 36 // |surface_info| will refer to a null pointer.
37 virtual void OnChildWindowSurfaceChanged( 37 virtual void OnChildWindowSurfaceChanged(
38 Window* window, 38 Window* window,
39 std::unique_ptr<SurfaceInfo>* surface_info) = 0; 39 std::unique_ptr<SurfaceInfo>* surface_info) = 0;
40 }; 40 };
41 41
42 } // namespace ui 42 } // namespace aura
43 43
44 #endif // SERVICES_UI_PUBLIC_CPP_SURFACE_ID_HANDLER_H_ 44 #endif // UI_AURA_MUS_SURFACE_ID_HANDLER_H_
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