ui/display/chromeos/x11/native_display_delegate_x11.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 UI_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_DELEGATE_X11_H_
   6 #define UI_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_DELEGATE_X11_H_
   7
   8 #include <stdint.h>
   9
  10 #include <map>
  11 #include <vector>
  12
  13 #include "base/compiler_specific.h"
  14 #include "base/event_types.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/memory/scoped_vector.h"
  17 #include "base/observer_list.h"
  18 #include "ui/display/display_export.h"
  19 #include "ui/display/types/chromeos/native_display_delegate.h"
  20 #include "ui/gfx/geometry/point.h"
  21 #include "ui/gfx/geometry/size.h"
  22
  23 // Forward declarations for Xlib and Xrandr.
  24 // This is so unused X definitions don't pollute the namespace.
  25 typedef unsigned long XID;
  26 typedef XID RROutput;
  27 typedef XID RRCrtc;
  28 typedef XID RRMode;
  29 typedef XID Window;
  30
  31 struct _XDisplay;
  32 typedef struct _XDisplay Display;
  33 struct _XRROutputInfo;
  34 typedef _XRROutputInfo XRROutputInfo;
  35 struct _XRRScreenResources;
  36 typedef _XRRScreenResources XRRScreenResources;
  37 struct _XRRCrtcGamma;
  38 typedef _XRRCrtcGamma XRRCrtcGamma;
  39
  40 namespace ui {
  41
  42 class DisplayModeX11;
  43 class DisplaySnapshotX11;
  44 class NativeDisplayEventDispatcherX11;
  45
  46 class DISPLAY_EXPORT NativeDisplayDelegateX11 : public NativeDisplayDelegate {
  47  public:
  48   // Helper class that allows NativeDisplayEventDispatcherX11 and
  49   // NativeDisplayDelegateX11::PlatformEventObserverX11 to interact with this
  50   // class or with mocks in tests.
  51   class HelperDelegate {
  52    public:
  53     virtual ~HelperDelegate() {}
  54
  55     // Tells XRandR to update its configuration in response to |event|, an
  56     // RRScreenChangeNotify event.
  57     virtual void UpdateXRandRConfiguration(const base::NativeEvent& event) = 0;
  58
  59     // Returns the list of current outputs. This is used to discard duplicate
  60     // events.
  61     virtual const std::vector<DisplaySnapshot*>& GetCachedDisplays() const = 0;
  62
  63     // Notify |observers_| that a change in configuration has occurred.
  64     virtual void NotifyDisplayObservers() = 0;
  65   };
  66
  67   NativeDisplayDelegateX11();
  68   virtual ~NativeDisplayDelegateX11();
  69
  70   // NativeDisplayDelegate overrides:
  71   virtual void Initialize() OVERRIDE;
  72   virtual void GrabServer() OVERRIDE;
  73   virtual void UngrabServer() OVERRIDE;
  74   virtual void SyncWithServer() OVERRIDE;
  75   virtual void SetBackgroundColor(uint32_t color_argb) OVERRIDE;
  76   virtual void ForceDPMSOn() OVERRIDE;
  77   virtual std::vector<DisplaySnapshot*> GetDisplays() OVERRIDE;
  78   virtual void AddMode(const DisplaySnapshot& output,
  79                        const DisplayMode* mode) OVERRIDE;
  80   virtual bool Configure(const DisplaySnapshot& output,
  81                          const DisplayMode* mode,
  82                          const gfx::Point& origin) OVERRIDE;
  83   virtual void CreateFrameBuffer(const gfx::Size& size) OVERRIDE;
  84   virtual bool GetHDCPState(const DisplaySnapshot& output,
  85                             HDCPState* state) OVERRIDE;
  86   virtual bool SetHDCPState(const DisplaySnapshot& output,
  87                             HDCPState state) OVERRIDE;
  88   virtual std::vector<ColorCalibrationProfile>
  89       GetAvailableColorCalibrationProfiles(
  90           const DisplaySnapshot& output) OVERRIDE;
  91   virtual bool SetColorCalibrationProfile(
  92       const DisplaySnapshot& output,
  93       ColorCalibrationProfile new_profile) OVERRIDE;
  94   virtual void AddObserver(NativeDisplayObserver* observer) OVERRIDE;
  95   virtual void RemoveObserver(NativeDisplayObserver* observer) OVERRIDE;
  96
  97  private:
  98   class HelperDelegateX11;
  99
 100   // Parses all the modes made available by |screen_|.
 101   void InitModes();
 102
 103   // Helper method for GetOutputs() that returns an OutputSnapshot struct based
 104   // on the passed-in information.
 105   DisplaySnapshotX11* InitDisplaySnapshot(RROutput id,
 106                                           XRROutputInfo* info,
 107                                           RRCrtc* last_used_crtc,
 108                                           int index);
 109
 110   // Destroys unused CRTCs.
 111   void DestroyUnusedCrtcs();
 112
 113   // Parks used CRTCs in a way which allows a framebuffer resize. This is faster
 114   // than turning them off, resizing, then turning them back on.
 115   // |min_screen_size| represent the smallest size between the current
 116   // framebuffer size and the requested framebuffer size.
 117   void UpdateCrtcsForNewFramebuffer(const gfx::Size& min_screen_size);
 118
 119   bool ConfigureCrtc(RRCrtc crtc, RRMode mode, RROutput output, int x, int y);
 120
 121   // Returns whether |id| is configured to preserve aspect when scaling.
 122   bool IsOutputAspectPreservingScaling(RROutput id);
 123
 124   // Creates the gamma ramp for |new_profile|, or NULL if it doesn't exist.
 125   // The caller should take the ownership.
 126   XRRCrtcGamma* CreateGammaRampForProfile(
 127       const DisplaySnapshotX11& x11_output,
 128       ColorCalibrationProfile new_profile);
 129
 130   void DrawBackground();
 131
 132   Display* display_;
 133   Window window_;
 134
 135   // Initialized when the server is grabbed and freed when it's ungrabbed.
 136   XRRScreenResources* screen_;
 137
 138   std::map<RRMode, DisplayModeX11*> modes_;
 139
 140   // Every time GetOutputs() is called we cache the updated list of outputs in
 141   // |cached_outputs_| so that we can check for duplicate events rather than
 142   // propagate them.
 143   ScopedVector<DisplaySnapshot> cached_outputs_;
 144
 145   scoped_ptr<HelperDelegate> helper_delegate_;
 146
 147   // Processes X11 display events associated with the root window and notifies
 148   // |observers_| when a display change has occurred.
 149   scoped_ptr<NativeDisplayEventDispatcherX11> platform_event_dispatcher_;
 150
 151   // List of observers waiting for display configuration change events.
 152   ObserverList<NativeDisplayObserver> observers_;
 153
 154   // A background color used during boot time + multi displays.
 155   uint32_t background_color_argb_;
 156
 157   DISALLOW_COPY_AND_ASSIGN(NativeDisplayDelegateX11);
 158 };
 159
 160 }  // namespace ui
 161
 162 #endif  // UI_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_DELEGATE_X11_H_