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| 1 // Copyright 2014 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 UI_OZONE_PUBLIC_OVERLAY_CANDIDATES_OZONE_H_ | |
| 6 #define UI_OZONE_PUBLIC_OVERLAY_CANDIDATES_OZONE_H_ | |
| 7 | |
| 8 #include <vector> | |
| 9 | |
| 10 #include "base/basictypes.h" | |
| 11 #include "ui/gfx/rect_f.h" | |
| 12 #include "ui/ozone/ozone_base_export.h" | |
| 13 #include "ui/ozone/public/surface_factory_ozone.h" | |
| 14 | |
| 15 namespace ui { | |
| 16 | |
| 17 // This class can be used to answer questions about possible overlay | |
| 18 // configurations for a particular output device. We get an instance of this | |
| 19 // class from SurfaceFactoryOzone given an AcceleratedWidget. | |
| 20 class OZONE_BASE_EXPORT OverlayCandidatesOzone { | |
| 21 public: | |
| 22 struct OverlaySurfaceCandidate { | |
| 23 OverlaySurfaceCandidate(); | |
| 24 ~OverlaySurfaceCandidate(); | |
| 25 | |
| 26 // Transformation to apply to layer during composition. | |
| 27 gfx::OverlayTransform transform; | |
| 28 // Format of the buffer to composite. | |
| 29 SurfaceFactoryOzone::BufferFormat format; | |
| 30 // Rect on the display to position the overlay to. | |
| 31 gfx::Rect display_rect; | |
| 32 // Crop within the buffer to be placed inside |display_rect|. | |
| 33 gfx::RectF crop_rect; | |
| 34 // Stacking order of the overlay plane relative to the main surface, | |
| 35 // which is 0. Signed to allow for "underlays". | |
| 36 int plane_z_order; | |
| 37 | |
| 38 // To be modified by the implementer if this candidate can go into | |
| 39 // an overlay. | |
| 40 bool overlay_handled; | |
| 41 }; | |
| 42 | |
| 43 typedef std::vector<OverlaySurfaceCandidate> OverlaySurfaceCandidateList; | |
| 44 | |
| 45 // A list of possible overlay candidates is presented to this function. | |
| 46 // The expected result is that those candidates that can be in a separate | |
| 47 // plane are marked with |overlay_handled| set to true, otherwise they are | |
| 48 // to be tranditionally composited. | |
| 49 virtual void CheckOverlaySupport(OverlaySurfaceCandidateList* surfaces); | |
| 50 | |
| 51 virtual ~OverlayCandidatesOzone(); | |
| 52 }; | |
| 53 | |
| 54 } // namespace ui | |
| 55 | |
| 56 #endif // UI_OZONE_PUBLIC_OVERLAY_CANDIDATES_OZONE_H_ | |
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