Merge monitor_reconfigure into powerd.

monitor_reconfigure.h

+// Copyright (c) 2011 The Chromium OS 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 POWER_MANAGER_MONITOR_RECONFIGURE_H_
+#define POWER_MANAGER_MONITOR_RECONFIGURE_H_
+
+#include <map>
+#include <vector>
+
+#include <X11/Xlib.h>
+#include <X11/extensions/Xrandr.h>
+
+#include "power_manager/resolution_selector.h"
+#include "power_manager/udev_controller.h"
+
+namespace power_manager {
+
+class BacklightController;
+class MonitorReconfigure;
+
+// Delegate class for udev events.
+class MonitorReconfigureDelegate : public UdevDelegate {
+ public:
+  MonitorReconfigureDelegate(MonitorReconfigure* monitor_reconfigure)
+    : monitor_reconfigure_(monitor_reconfigure) {}
+
+  virtual void Run(GIOChannel* source, GIOCondition condition);
+ private:
+  MonitorReconfigure* monitor_reconfigure_;
+};
+
+// MonitorReconfigure is the class responsible for setting the external
+// monitor to the max resolution based on the modes supported by the native
+// monitor and the external monitor.
+class MonitorReconfigure {
+ public:
+  // We need a default constructor for unit tests.
+  MonitorReconfigure();
+  // |backlight_ctl| is a pointer to the backlight controller for the
+  // internal screen.
+  MonitorReconfigure(BacklightController* backlight_ctl);
+  ~MonitorReconfigure();
+
+  // Initialization.
+  bool Init();
+
+  // Main entry point.
+  void Run();
+
+ private:
+  // Initializes the |lcd_output_| and |external_output_| members.
+  void DetermineOutputs();
+
+  // Returns whether an external monitor is connected.
+  bool IsExternalMonitorConnected();
+
+  // Sorts |output_info|'s modes by decreasing number of pixels, storing the
+  // results in |modes_out|.
+  void SortModesByResolution(RROutput output,
+                             std::vector<ResolutionSelector::Mode>* modes_out);
+
+  // Set the resolution for a particular device or for the screen.
+  bool SetDeviceResolution(RROutput output,
+                           const XRROutputInfo* output_info,
+                           const ResolutionSelector::Mode& resolution);
+  bool SetScreenResolution(const ResolutionSelector::Mode& resolution);
+
+  // Disable output to a device.
+  bool DisableDevice(const XRROutputInfo* output_info);
+
+  // Mapping between mode XIDs and mode information structures.
+  std::map<int, XRRModeInfo*> mode_map_;
+
+  // X Resources needed between functions.
+  Display* display_;
+  Window window_;
+  XRRScreenResources* screen_info_;
+
+  RROutput lcd_output_;
+  XRROutputInfo* lcd_output_info_;
+
+  RROutput external_output_;
+  XRROutputInfo* external_output_info_;
+
+  // Not owned.
+  BacklightController* backlight_ctl_;
+
+  // Delegate for the Udev controller.
+  MonitorReconfigureDelegate* delegate_;
+
+  // Udev controller.
+  UdevController* controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(MonitorReconfigure);
+};
+
+}  // namespace power_manager
+
+#endif  // POWER_MANAGER_MONITOR_RECONFIGURE_H_