chromeos/display/native_display_delegate.h

   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 CHROMEOS_DISPLAY_NATIVE_DISPLAY_DELEGATE_H_
   6 #define CHROMEOS_DISPLAY_NATIVE_DISPLAY_DELEGATE_H_
   7
   8 #include "chromeos/display/output_configurator.h"
   9 #include "ui/display/display_constants.h"
  10
  11 namespace chromeos {
  12
  13 class NativeDisplayObserver;
  14
  15 // Interface for classes that perform display configuration actions on behalf
  16 // of OutputConfigurator.
  17 // TODO(dnicoara) This interface will eventually be platform independent,
  18 // however it first requires refactoring the datatypes: crbug.com/333413
  19 class NativeDisplayDelegate {
  20  public:
  21   virtual ~NativeDisplayDelegate() {}
  22
  23   // Initializes the XRandR extension, saving the base event ID to |event_base|.
  24   virtual void Initialize() = 0;
  25
  26   // Grabs the X server and refreshes XRandR-related resources.  While
  27   // the server is grabbed, other clients are blocked.  Must be balanced
  28   // by a call to UngrabServer().
  29   virtual void GrabServer() = 0;
  30
  31   // Ungrabs the server and frees XRandR-related resources.
  32   virtual void UngrabServer() = 0;
  33
  34   // Flushes all pending requests and waits for replies.
  35   virtual void SyncWithServer() = 0;
  36
  37   // Sets the window's background color to |color_argb|.
  38   virtual void SetBackgroundColor(uint32 color_argb) = 0;
  39
  40   // Enables DPMS and forces it to the "on" state.
  41   virtual void ForceDPMSOn() = 0;
  42
  43   // Returns information about the current outputs. This method may block for
  44   // 60 milliseconds or more. The returned outputs are not fully initialized;
  45   // the rest of the work happens in
  46   // OutputConfigurator::UpdateCachedOutputs().
  47   virtual std::vector<OutputConfigurator::OutputSnapshot> GetOutputs() = 0;
  48
  49   // Adds |mode| to |output|.
  50   virtual void AddMode(const OutputConfigurator::OutputSnapshot& output,
  51                        RRMode mode) = 0;
  52
  53   // Calls XRRSetCrtcConfig() with the given options but some of our default
  54   // output count and rotation arguments. Returns true on success.
  55   virtual bool Configure(const OutputConfigurator::OutputSnapshot& output,
  56                          RRMode mode,
  57                          int x,
  58                          int y) = 0;
  59
  60   // Called to set the frame buffer (underlying XRR "screen") size.  Has
  61   // a side-effect of disabling all CRTCs.
  62   virtual void CreateFrameBuffer(
  63       int width,
  64       int height,
  65       const std::vector<OutputConfigurator::OutputSnapshot>& outputs) = 0;
  66
  67   // Gets HDCP state of output.
  68   virtual bool GetHDCPState(const OutputConfigurator::OutputSnapshot& output,
  69                             ui::HDCPState* state) = 0;
  70
  71   // Sets HDCP state of output.
  72   virtual bool SetHDCPState(const OutputConfigurator::OutputSnapshot& output,
  73                             ui::HDCPState state) = 0;
  74
  75   virtual void AddObserver(NativeDisplayObserver* observer) = 0;
  76
  77   virtual void RemoveObserver(NativeDisplayObserver* observer) = 0;
  78 };
  79
  80 }  // namespace chromeos
  81
  82 #endif  // CHROMEOS_DISPLAY_NATIVE_DISPLAY_DELEGATE_H_