| // 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_DISPLAY_TYPES_NATIVE_DISPLAY_DELEGATE_H_ |
| #define UI_DISPLAY_TYPES_NATIVE_DISPLAY_DELEGATE_H_ |
| |
| #include <stdint.h> |
| |
| #include <vector> |
| |
| #include "base/callback.h" |
| #include "ui/display/types/display_constants.h" |
| #include "ui/display/types/display_types_export.h" |
| #include "ui/display/types/fake_display_controller.h" |
| |
| namespace gfx { |
| class Point; |
| } |
| |
| namespace display { |
| class DisplayMode; |
| class DisplaySnapshot; |
| class NativeDisplayObserver; |
| |
| struct GammaRampRGBEntry; |
| |
| using GetDisplaysCallback = |
| base::OnceCallback<void(const std::vector<DisplaySnapshot*>&)>; |
| using ConfigureCallback = base::OnceCallback<void(bool)>; |
| using GetHDCPStateCallback = base::OnceCallback<void(bool, HDCPState)>; |
| using SetHDCPStateCallback = base::OnceCallback<void(bool)>; |
| using DisplayControlCallback = base::OnceCallback<void(bool)>; |
| |
| // Interface for classes that perform display configuration actions on behalf |
| // of DisplayConfigurator. |
| // Implementations may perform calls asynchronously. In the case of functions |
| // taking callbacks, the callbacks may be called asynchronously when the results |
| // are available. The implementations must provide a strong guarantee that the |
| // callbacks are always called. |
| class DISPLAY_TYPES_EXPORT NativeDisplayDelegate { |
| public: |
| virtual ~NativeDisplayDelegate(); |
| |
| virtual void Initialize() = 0; |
| |
| // Take control of the display from any other controlling process. |
| virtual void TakeDisplayControl(DisplayControlCallback callback) = 0; |
| |
| // Let others control the display. |
| virtual void RelinquishDisplayControl(DisplayControlCallback callback) = 0; |
| |
| // Queries for a list of fresh displays and returns them via |callback|. |
| // Note the query operation may be expensive and take over 60 milliseconds. |
| virtual void GetDisplays(GetDisplaysCallback callback) = 0; |
| |
| // Configures the display represented by |output| to use |mode| and positions |
| // the display to |origin| in the framebuffer. |mode| can be NULL, which |
| // represents disabling the display. The callback will return the status of |
| // the operation. |
| virtual void Configure(const DisplaySnapshot& output, |
| const DisplayMode* mode, |
| const gfx::Point& origin, |
| ConfigureCallback callback) = 0; |
| |
| // Gets HDCP state of output. |
| virtual void GetHDCPState(const DisplaySnapshot& output, |
| GetHDCPStateCallback callback) = 0; |
| |
| // Sets HDCP state of output. |
| virtual void SetHDCPState(const DisplaySnapshot& output, |
| HDCPState state, |
| SetHDCPStateCallback callback) = 0; |
| |
| // Set the gamma tables and corection matrix for the display. |
| virtual bool SetColorCorrection( |
| const DisplaySnapshot& output, |
| const std::vector<GammaRampRGBEntry>& degamma_lut, |
| const std::vector<GammaRampRGBEntry>& gamma_lut, |
| const std::vector<float>& correction_matrix) = 0; |
| |
| virtual void AddObserver(NativeDisplayObserver* observer) = 0; |
| |
| virtual void RemoveObserver(NativeDisplayObserver* observer) = 0; |
| |
| // Returns a fake display controller that can modify the fake display state. |
| // Will return null if not needed, most likely because the delegate is |
| // intended for use on device and doesn't need to fake the display state. |
| virtual FakeDisplayController* GetFakeDisplayController() = 0; |
| }; |
| |
| } // namespace display |
| |
| #endif // UI_DISPLAY_TYPES_NATIVE_DISPLAY_DELEGATE_H_ |