| // Copyright 2014 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 UI_OZONE_PUBLIC_OVERLAY_CANDIDATES_OZONE_H_ |
| #define UI_OZONE_PUBLIC_OVERLAY_CANDIDATES_OZONE_H_ |
| |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "ui/gfx/rect_f.h" |
| #include "ui/ozone/ozone_base_export.h" |
| #include "ui/ozone/public/surface_factory_ozone.h" |
| |
| namespace ui { |
| |
| // This class can be used to answer questions about possible overlay |
| // configurations for a particular output device. We get an instance of this |
| // class from SurfaceFactoryOzone given an AcceleratedWidget. |
| class OZONE_BASE_EXPORT OverlayCandidatesOzone { |
| public: |
| struct OverlaySurfaceCandidate { |
| OverlaySurfaceCandidate(); |
| ~OverlaySurfaceCandidate(); |
| |
| // Transformation to apply to layer during composition. |
| gfx::OverlayTransform transform; |
| // Format of the buffer to composite. |
| SurfaceFactoryOzone::BufferFormat format; |
| // Rect on the display to position the overlay to. |
| gfx::Rect display_rect; |
| // Crop within the buffer to be placed inside |display_rect|. |
| gfx::RectF crop_rect; |
| // Stacking order of the overlay plane relative to the main surface, |
| // which is 0. Signed to allow for "underlays". |
| int plane_z_order; |
| |
| // To be modified by the implementer if this candidate can go into |
| // an overlay. |
| bool overlay_handled; |
| }; |
| |
| typedef std::vector<OverlaySurfaceCandidate> OverlaySurfaceCandidateList; |
| |
| // A list of possible overlay candidates is presented to this function. |
| // The expected result is that those candidates that can be in a separate |
| // plane are marked with |overlay_handled| set to true, otherwise they are |
| // to be tranditionally composited. |
| virtual void CheckOverlaySupport(OverlaySurfaceCandidateList* surfaces); |
| |
| virtual ~OverlayCandidatesOzone(); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_OZONE_PUBLIC_OVERLAY_CANDIDATES_OZONE_H_ |