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_MAIN_H_
+#define POWER_MANAGER_MONITOR_RECONFIGURE_MAIN_H_
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include <X11/Xlib.h>
+#include <X11/extensions/Xrandr.h>
+
+#include "power_manager/backlight_controller.h"
+#include "power_manager/resolution_selector.h"
+#include "power_manager/udev_listener.h"
+
+namespace power_manager {
+
+class MonitorReconfigureMain;
+
+// Callback class for udev events.
+class MonitorReconfigureCallback : public UdevCallback {
+ public:
+  MonitorReconfigureCallback(MonitorReconfigureMain* monitor_reconfigure)
+    : monitor_reconfigure_(monitor_reconfigure) {}
+
+  void Run(GIOChannel* source, GIOCondition condition);
+ private:
+  MonitorReconfigureMain* monitor_reconfigure_;
+};
+
+// MonitorReconfigureMain 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 MonitorReconfigureMain {
+ public:
+  // |window| is the root window.
+  MonitorReconfigureMain(BacklightController* backlight_ctl);
+  ~MonitorReconfigureMain();
+
+  // 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_;
+
+  // Callback for the Udev listener.
+  MonitorReconfigureCallback* callback_;
+
+  // Udev linstener.
+  UdevListener* listener_;
+
+};
+
+}  // namespace power_manager
+
+#endif  // POWER_MANAGER_MONITOR_RECONFIGURE_MAIN_H_