Rename the remaining usage of Monitor to Display

chromeos/monitor/output_configurator.cc

Index: chromeos/monitor/output_configurator.cc
diff --git a/chromeos/monitor/output_configurator.cc b/chromeos/monitor/output_configurator.cc
deleted file mode 100644
index 8e47f07fe80ac4f8db177c465c6e41c96cc47143..0000000000000000000000000000000000000000
--- a/chromeos/monitor/output_configurator.cc
+++ /dev/null
@@ -1,804 +0,0 @@
-// Copyright (c) 2012 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.
-
-#include "chromeos/monitor/output_configurator.h"
-
-#include <X11/Xlib.h>
-#include <X11/extensions/dpms.h>
-#include <X11/extensions/Xrandr.h>
-
-// Xlib defines Status as int which causes our include of dbus/bus.h to fail
-// when it tries to name an enum Status.  Thus, we need to undefine it (note
-// that this will cause a problem if code needs to use the Status type).
-// RootWindow causes similar problems in that there is a Chromium type with that
-// name.
-#undef Status
-#undef RootWindow
-
-#include "base/chromeos/chromeos_version.h"
-#include "base/logging.h"
-#include "base/message_pump_aurax11.h"
-#include "chromeos/dbus/dbus_thread_manager.h"
-#include "dbus/bus.h"
-#include "dbus/exported_object.h"
-#include "dbus/message.h"
-#include "dbus/object_path.h"
-#include "dbus/object_proxy.h"
-#include "third_party/cros_system_api/dbus/service_constants.h"
-
-namespace chromeos {
-
-namespace {
-// DPI measurements.
-const float kMmInInch = 25.4;
-const float kDpi96 = 96.0;
-const float kPixelsToMmScale = kMmInInch / kDpi96;
-
-// The DPI threshold to detech high density screen.
-// Higher DPI than this will use device_scale_factor=2
-// Should be kept in sync with monitor_change_observer_x11.cc
-const unsigned int kHighDensityDIPThreshold = 160;
-
-// Prefixes for the built-in displays.
-const char kInternal_LVDS[] = "LVDS";
-const char kInternal_eDP[] = "eDP";
-
-// Gap between screens so cursor at bottom of active monitor doesn't partially
-// appear on top of inactive monitor. Higher numbers guard against larger
-// cursors, but also waste more memory. We will double this gap for screens
-// with a device_scale_factor of 2. While this gap will not guard against all
-// possible cursors in X, it should handle the ones we actually use. See
-// crbug.com/130188
-const int kVerticalGap = 30;
-
-// TODO: Determine if we need to organize modes in a way which provides better
-// than O(n) lookup time.  In many call sites, for example, the "next" mode is
-// typically what we are looking for so using this helper might be too
-// expensive.
-static XRRModeInfo* ModeInfoForID(XRRScreenResources* screen, RRMode modeID) {
-  XRRModeInfo* result = NULL;
-  for (int i = 0; (i < screen->nmode) && (result == NULL); i++)
-    if (modeID == screen->modes[i].id)
-      result = &screen->modes[i];
-
-  // We can't fail to find a mode referenced from the same screen.
-  CHECK(result != NULL);
-  return result;
-}
-
-// Identifies the modes which will be used by the respective outputs when in a
-// mirror mode.  This means that the two modes will have the same resolution.
-// The RROutput IDs |one| and |two| are used to look up the modes and
-// |out_one_mode| and |out_two_mode| are the out-parameters for the respective
-// modes.
-// Returns false if it fails to find a compatible set of modes.
-static bool FindMirrorModeForOutputs(Display* display,
-                                     XRRScreenResources* screen,
-                                     RROutput one,
-                                     RROutput two,
-                                     RRMode* out_one_mode,
-                                     RRMode* out_two_mode) {
-  XRROutputInfo* primary = XRRGetOutputInfo(display, screen, one);
-  XRROutputInfo* secondary = XRRGetOutputInfo(display, screen, two);
-
-  int one_index = 0;
-  int two_index = 0;
-  bool found = false;
-  while (!found &&
-      (one_index < primary->nmode) &&
-      (two_index < secondary->nmode)) {
-    RRMode one_id = primary->modes[one_index];
-    RRMode two_id = secondary->modes[two_index];
-    XRRModeInfo* one_mode = ModeInfoForID(screen, one_id);
-    XRRModeInfo* two_mode = ModeInfoForID(screen, two_id);
-    int one_width = one_mode->width;
-    int one_height = one_mode->height;
-    int two_width = two_mode->width;
-    int two_height = two_mode->height;
-    if ((one_width == two_width) && (one_height == two_height)) {
-      *out_one_mode = one_id;
-      *out_two_mode = two_id;
-      found = true;
-    } else {
-      // The sort order of the modes is NOT by mode area but is sorted by width,
-      // then by height within each like width.
-      if (one_width > two_width) {
-        one_index += 1;
-      } else if (one_width < two_width) {
-        two_index += 1;
-      } else {
-        if (one_height > two_height) {
-          one_index += 1;
-        } else {
-          two_index += 1;
-        }
-      }
-    }
-  }
-  XRRFreeOutputInfo(primary);
-  XRRFreeOutputInfo(secondary);
-  return found;
-}
-
-// A helper to call XRRSetCrtcConfig with the given options but some of our
-// default output count and rotation arguments.
-static void ConfigureCrtc(Display *display,
-                          XRRScreenResources* screen,
-                          RRCrtc crtc,
-                          int x,
-                          int y,
-                          RRMode mode,
-                          RROutput output) {
-  const Rotation kRotate = RR_Rotate_0;
-  RROutput* outputs = NULL;
-  int num_outputs = 0;
-
-  // Check the output and mode argument - if either are None, we should disable.
-  if ((output != None) && (mode != None)) {
-    outputs = &output;
-    num_outputs = 1;
-  }
-
-  XRRSetCrtcConfig(display,
-                   screen,
-                   crtc,
-                   CurrentTime,
-                   x,
-                   y,
-                   mode,
-                   kRotate,
-                   outputs,
-                   num_outputs);
-  if (num_outputs == 1) {
-    // We are enabling a display so make sure it is turned on.
-    CHECK(DPMSEnable(display));
-    CHECK(DPMSForceLevel(display, DPMSModeOn));
-  }
-}
-
-// Called to set the frame buffer (underling XRR "screen") size.  Has a
-// side-effect of disabling all CRTCs.
-static void CreateFrameBuffer(Display* display,
-                              XRRScreenResources* screen,
-                              Window window,
-                              int width,
-                              int height) {
-  // Note that setting the screen size fails if any CRTCs are currently
-  // pointing into it so disable them all.
-  for (int i = 0; i < screen->ncrtc; ++i) {
-    const int x = 0;
-    const int y = 0;
-    const RRMode kMode = None;
-    const RROutput kOutput = None;
-
-    ConfigureCrtc(display,
-                  screen,
-                  screen->crtcs[i],
-                  x,
-                  y,
-                  kMode,
-                  kOutput);
-  }
-  int mm_width = width * kPixelsToMmScale;
-  int mm_height = height * kPixelsToMmScale;
-  XRRSetScreenSize(display, window, width, height, mm_width, mm_height);
-}
-
-// A helper to get the current CRTC, Mode, and height for a given output.  This
-// is read from the XRandR configuration and not any of our caches.
-static void GetOutputConfiguration(Display* display,
-                                   XRRScreenResources* screen,
-                                   RROutput output,
-                                   RRCrtc* crtc,
-                                   RRMode* mode,
-                                   int* height) {
-  XRROutputInfo* output_info = XRRGetOutputInfo(display, screen, output);
-  CHECK(output_info != NULL);
-  *crtc = output_info->crtc;
-  XRRCrtcInfo* crtc_info = XRRGetCrtcInfo(display, screen, *crtc);
-  if (crtc_info != NULL) {
-    *mode = crtc_info->mode;
-    *height = crtc_info->height;
-    XRRFreeCrtcInfo(crtc_info);
-  }
-  XRRFreeOutputInfo(output_info);
-}
-
-// A helper to determine the device_scale_factor given pixel width and mm_width.
-// This currently only reports two scale factors (1.0 and 2.0)
-static float ComputeDeviceScaleFactor(unsigned int width,
-                                      unsigned long mm_width) {
-  float device_scale_factor = 1.0f;
-  if (mm_width > 0 && (kMmInInch * width / mm_width) > kHighDensityDIPThreshold)
-    device_scale_factor = 2.0f;
-  return device_scale_factor;
-}
-
-}  // namespace
-
-bool OutputConfigurator::TryRecacheOutputs(Display* display,
-                                           XRRScreenResources* screen) {
-  bool outputs_did_change = false;
-  int previous_connected_count = 0;
-  int new_connected_count = 0;
-
-  if (output_count_ != screen->noutput) {
-    outputs_did_change = true;
-  } else {
-    // The outputs might have changed so compare the connected states in the
-    // screen to our existing cache.
-    for (int i = 0; (i < output_count_) && !outputs_did_change; ++i) {
-      RROutput thisID = screen->outputs[i];
-      XRROutputInfo* output = XRRGetOutputInfo(display, screen, thisID);
-      bool now_connected = (RR_Connected == output->connection);
-      outputs_did_change = (now_connected != output_cache_[i].is_connected);
-      XRRFreeOutputInfo(output);
-
-      if (output_cache_[i].is_connected)
-        previous_connected_count += 1;
-      if (now_connected)
-        new_connected_count += 1;
-    }
-  }
-
-  if (outputs_did_change) {
-    // We now know that we need to recache so free and re-alloc the buffer.
-    output_count_ = screen->noutput;
-    if (output_count_ == 0) {
-      output_cache_.reset(NULL);
-    } else {
-      // Ideally, this would be allocated inline in the OutputConfigurator
-      // instance since we support at most 2 connected outputs but this dynamic
-      // allocation was specifically requested.
-      output_cache_.reset(new CachedOutputDescription[output_count_]);
-    }
-
-    // TODO: This approach to finding CRTCs only supports two.  Expand on this.
-    RRCrtc used_crtc = None;
-    primary_output_index_ = -1;
-    secondary_output_index_ = -1;
-
-    for (int i = 0; i < output_count_; ++i) {
-      RROutput this_id = screen->outputs[i];
-      XRROutputInfo* output = XRRGetOutputInfo(display, screen, this_id);
-      bool is_connected = (RR_Connected == output->connection);
-      RRCrtc crtc = None;
-      RRMode ideal_mode = None;
-      int x = 0;
-      int y = 0;
-      unsigned long mm_width = output->mm_width;
-      unsigned long mm_height = output->mm_height;
-      bool is_internal = false;
-
-      if (is_connected) {
-        for (int j = 0; (j < output->ncrtc) && (None == crtc); ++j) {
-          RRCrtc possible = output->crtcs[j];
-          if (possible != used_crtc) {
-            crtc = possible;
-            used_crtc = possible;
-          }
-        }
-
-        const char* name = output->name;
-        is_internal =
-            (strncmp(kInternal_LVDS,
-                     name,
-                     arraysize(kInternal_LVDS) - 1) == 0) ||
-            (strncmp(kInternal_eDP,
-                     name,
-                     arraysize(kInternal_eDP) - 1) == 0);
-        if (output->nmode > 0)
-          ideal_mode = output->modes[0];
-
-        if (crtc != None) {
-          XRRCrtcInfo* crtcInfo = XRRGetCrtcInfo(display, screen, crtc);
-          x = crtcInfo->x;
-          y = crtcInfo->y;
-          XRRFreeCrtcInfo(crtcInfo);
-        }
-
-        // Save this for later mirror mode detection.
-        if (primary_output_index_ == -1)
-          primary_output_index_ = i;
-        else if (secondary_output_index_ == -1)
-          secondary_output_index_ = i;
-      }
-      XRRFreeOutputInfo(output);
-
-      // Now save the cached state for this output (we will default to mirror
-      // disabled and detect that after we have identified the first two
-      // connected outputs).
-      VLOG(1) << "Recache output index: " << i
-              << ", output id: " << this_id
-              << ", crtc id: " << crtc
-              << ", ideal mode id: " << ideal_mode
-              << ", x: " << x
-              << ", y: " << y
-              << ", is connected: " << is_connected
-              << ", is_internal: " << is_internal
-              << ", mm_width: " << mm_width
-              << ", mm_height: " << mm_height;
-      output_cache_[i].output = this_id;
-      output_cache_[i].crtc = crtc;
-      output_cache_[i].mirror_mode = None;
-      output_cache_[i].ideal_mode = ideal_mode;
-      output_cache_[i].x = x;
-      output_cache_[i].y = y;
-      output_cache_[i].is_connected = is_connected;
-      output_cache_[i].is_powered_on = true;
-      output_cache_[i].is_internal = is_internal;
-      output_cache_[i].mm_width = mm_width;
-      output_cache_[i].mm_height = mm_height;
-    }
-
-    // Now, detect the mirror modes if we have two connected outputs.
-    if ((primary_output_index_ != -1) && (secondary_output_index_ != -1)) {
-      mirror_supported_ = FindMirrorModeForOutputs(
-          display,
-          screen,
-          output_cache_[primary_output_index_].output,
-          output_cache_[secondary_output_index_].output,
-          &output_cache_[primary_output_index_].mirror_mode,
-          &output_cache_[secondary_output_index_].mirror_mode);
-
-      RRMode primary_mode = output_cache_[primary_output_index_].mirror_mode;
-      RRMode second_mode = output_cache_[secondary_output_index_].mirror_mode;
-      VLOG(1) << "Mirror mode supported " << mirror_supported_
-              << " primary " << primary_mode
-              << " secondary " << second_mode;
-    }
-  }
-  return outputs_did_change;
-}
-
-OutputConfigurator::OutputConfigurator()
-    : is_running_on_chrome_os_(base::chromeos::IsRunningOnChromeOS()),
-      output_count_(0),
-      output_cache_(NULL),
-      mirror_supported_(false),
-      primary_output_index_(-1),
-      secondary_output_index_(-1),
-      xrandr_event_base_(0),
-      output_state_(STATE_INVALID) {
-  if (is_running_on_chrome_os_) {
-    // Send the signal to powerd to tell it that we will take over output
-    // control.
-    // Note that this can be removed once the legacy powerd support is removed.
-    chromeos::DBusThreadManager* manager = chromeos::DBusThreadManager::Get();
-    dbus::Bus* bus = manager->GetSystemBus();
-    dbus::ExportedObject* remote_object = bus->GetExportedObject(
-        dbus::ObjectPath(power_manager::kPowerManagerServicePath));
-    dbus::Signal signal(power_manager::kPowerManagerInterface,
-                        power_manager::kUseNewMonitorConfigSignal);
-    CHECK(signal.raw_message() != NULL);
-    remote_object->SendSignal(&signal);
-
-    // Cache the initial output state.
-    Display* display = base::MessagePumpAuraX11::GetDefaultXDisplay();
-    CHECK(display != NULL);
-    XGrabServer(display);
-    Window window = DefaultRootWindow(display);
-    XRRScreenResources* screen = XRRGetScreenResources(display, window);
-    CHECK(screen != NULL);
-    bool did_detect_outputs = TryRecacheOutputs(display, screen);
-    CHECK(did_detect_outputs);
-    State current_state = InferCurrentState(display, screen);
-    if (current_state == STATE_INVALID) {
-      // Unknown state.  Transition into the default state.
-      State state = GetDefaultState();
-      UpdateCacheAndXrandrToState(display, screen, window, state);
-    } else {
-      // This is a valid state so just save it to |output_state_|.
-      output_state_ = current_state;
-    }
-    // Find xrandr_event_base_ since we need it to interpret events, later.
-    int error_base_ignored = 0;
-    XRRQueryExtension(display, &xrandr_event_base_, &error_base_ignored);
-    // Relinquish X resources.
-    XRRFreeScreenResources(screen);
-    XUngrabServer(display);
-    CheckIsProjectingAndNotify();
-  }
-}
-
-OutputConfigurator::~OutputConfigurator() {
-}
-
-void OutputConfigurator::UpdateCacheAndXrandrToState(
-    Display* display,
-    XRRScreenResources* screen,
-    Window window,
-    State new_state) {
-  // Default rules:
-  // - single display = rebuild framebuffer and set to ideal_mode.
-  // - multi display = rebuild framebuffer and set to mirror_mode.
-
-  // First, calculate the width and height of the framebuffer (we could retain
-  // the existing buffer, if it isn't resizing, but that causes an odd display
-  // state where the CRTCs are repositioned over the root windows before Chrome
-  // can move them).  It is a feature worth considering, though, and wouldn't
-  // be difficult to implement (just check the current framebuffer size before
-  // changing it).
-  int width = 0;
-  int height = 0;
-  int primary_height = 0;
-  int secondary_height = 0;
-  int vertical_gap = 0;
-  if (new_state == STATE_SINGLE) {
-    CHECK_NE(-1, primary_output_index_);
-
-    XRRModeInfo* ideal_mode = ModeInfoForID(
-        screen,
-        output_cache_[primary_output_index_].ideal_mode);
-    width = ideal_mode->width;
-    height = ideal_mode->height;
-  } else if (new_state == STATE_DUAL_MIRROR) {
-    CHECK_NE(-1, primary_output_index_);
-    CHECK_NE(-1, secondary_output_index_);
-
-    XRRModeInfo* mirror_mode = ModeInfoForID(
-        screen,
-        output_cache_[primary_output_index_].mirror_mode);
-    width = mirror_mode->width;
-    height = mirror_mode->height;
-  } else if ((new_state == STATE_DUAL_PRIMARY_ONLY) ||
-             (new_state == STATE_DUAL_SECONDARY_ONLY)) {
-    CHECK_NE(-1, primary_output_index_);
-    CHECK_NE(-1, secondary_output_index_);
-
-    XRRModeInfo* one_ideal = ModeInfoForID(
-        screen,
-        output_cache_[primary_output_index_].ideal_mode);
-    XRRModeInfo* two_ideal = ModeInfoForID(
-        screen,
-        output_cache_[secondary_output_index_].ideal_mode);
-
-    // Compute the device scale factor for the topmost display. We only need
-    // to take this device's scale factor into account as we are creating a gap
-    // to avoid the cursor drawing onto the second (unused) display when the
-    // cursor is near the bottom of the topmost display.
-    float top_scale_factor;
-    if (new_state == STATE_DUAL_PRIMARY_ONLY) {
-      top_scale_factor = ComputeDeviceScaleFactor(one_ideal->width,
-          output_cache_[primary_output_index_].mm_width);
-    } else {
-      top_scale_factor = ComputeDeviceScaleFactor(two_ideal->width,
-          output_cache_[secondary_output_index_].mm_width);
-    }
-    vertical_gap = kVerticalGap * top_scale_factor;
-
-    width = std::max<int>(one_ideal->width, two_ideal->width);
-    height = one_ideal->height + two_ideal->height + vertical_gap;
-    primary_height = one_ideal->height;
-    secondary_height = two_ideal->height;
-  }
-  CreateFrameBuffer(display, screen, window, width, height);
-
-  // Now, tile the outputs appropriately.
-  const int x = 0;
-  const int y = 0;
-  switch (new_state) {
-    case STATE_SINGLE:
-      ConfigureCrtc(display,
-                    screen,
-                    output_cache_[primary_output_index_].crtc,
-                    x,
-                    y,
-                    output_cache_[primary_output_index_].ideal_mode,
-                    output_cache_[primary_output_index_].output);
-      break;
-    case STATE_DUAL_MIRROR:
-    case STATE_DUAL_PRIMARY_ONLY:
-    case STATE_DUAL_SECONDARY_ONLY: {
-      RRMode primary_mode = output_cache_[primary_output_index_].mirror_mode;
-      RRMode secondary_mode =
-          output_cache_[secondary_output_index_].mirror_mode;
-      int primary_y = y;
-      int secondary_y = y;
-
-      if (new_state != STATE_DUAL_MIRROR) {
-        primary_mode = output_cache_[primary_output_index_].ideal_mode;
-        secondary_mode = output_cache_[secondary_output_index_].ideal_mode;
-      }
-      if (new_state == STATE_DUAL_PRIMARY_ONLY)
-        secondary_y = y + primary_height + vertical_gap;
-      if (new_state == STATE_DUAL_SECONDARY_ONLY)
-        primary_y = y + secondary_height + vertical_gap;
-
-      ConfigureCrtc(display,
-                    screen,
-                    output_cache_[primary_output_index_].crtc,
-                    x,
-                    primary_y,
-                    primary_mode,
-                    output_cache_[primary_output_index_].output);
-      ConfigureCrtc(display,
-                    screen,
-                    output_cache_[secondary_output_index_].crtc,
-                    x,
-                    secondary_y,
-                    secondary_mode,
-                    output_cache_[secondary_output_index_].output);
-      }
-      break;
-    case STATE_HEADLESS:
-      // Do nothing.
-      break;
-    default:
-      NOTREACHED() << "Unhandled state " << new_state;
-  }
-  output_state_ = new_state;
-}
-
-bool OutputConfigurator::RecacheAndUseDefaultState() {
-  Display* display = base::MessagePumpAuraX11::GetDefaultXDisplay();
-  CHECK(display != NULL);
-  XGrabServer(display);
-  Window window = DefaultRootWindow(display);
-  XRRScreenResources* screen = XRRGetScreenResources(display, window);
-  CHECK(screen != NULL);
-
-  bool did_detect_change = TryRecacheOutputs(display, screen);
-  if (did_detect_change) {
-    State state = GetDefaultState();
-    UpdateCacheAndXrandrToState(display, screen, window, state);
-  }
-  XRRFreeScreenResources(screen);
-  XUngrabServer(display);
-  return did_detect_change;
-}
-
-State OutputConfigurator::GetDefaultState() const {
-  State state = STATE_HEADLESS;
-  if (-1 != primary_output_index_) {
-    if (-1 != secondary_output_index_)
-      state = mirror_supported_ ? STATE_DUAL_MIRROR : STATE_DUAL_PRIMARY_ONLY;
-    else
-      state = STATE_SINGLE;
-  }
-  return state;
-}
-
-State OutputConfigurator::InferCurrentState(Display* display,
-                                            XRRScreenResources* screen) const {
-  // STATE_INVALID will be our default or "unknown" state.
-  State state = STATE_INVALID;
-  // First step:  count the number of connected outputs.
-  if (secondary_output_index_ == -1) {
-    // No secondary display.
-    if (primary_output_index_ == -1) {
-      // No primary display implies HEADLESS.
-      state = STATE_HEADLESS;
-    } else {
-      // The common case of primary-only.
-      // The only sanity check we require in this case is that the current mode
-      // of the output's CRTC is the ideal mode we determined for it.
-      RRCrtc primary_crtc = None;
-      RRMode primary_mode = None;
-      int primary_height = 0;
-      GetOutputConfiguration(display,
-                            screen,
-                            output_cache_[primary_output_index_].output,
-                            &primary_crtc,
-                            &primary_mode,
-                            &primary_height);
-      if (primary_mode == output_cache_[primary_output_index_].ideal_mode)
-        state = STATE_SINGLE;
-    }
-  } else {
-    // We have two displays attached so we need to look at their configuration.
-    // Note that, for simplicity, we will only detect the states that we would
-    // have used and will assume anything unexpected is INVALID (which should
-    // not happen in any expected usage scenario).
-    RRCrtc primary_crtc = None;
-    RRMode primary_mode = None;
-    int primary_height = 0;
-    GetOutputConfiguration(display,
-                           screen,
-                           output_cache_[primary_output_index_].output,
-                           &primary_crtc,
-                           &primary_mode,
-                           &primary_height);
-    RRCrtc secondary_crtc = None;
-    RRMode secondary_mode = None;
-    int secondary_height = 0;
-    GetOutputConfiguration(display,
-                           screen,
-                           output_cache_[secondary_output_index_].output,
-                           &secondary_crtc,
-                           &secondary_mode,
-                           &secondary_height);
-    // Make sure the CRTCs are matched to the expected outputs.
-    if ((output_cache_[primary_output_index_].crtc == primary_crtc) &&
-        (output_cache_[secondary_output_index_].crtc == secondary_crtc)) {
-      // Check the mode matching:  either both mirror or both ideal.
-      if ((output_cache_[primary_output_index_].mirror_mode == primary_mode) &&
-          (output_cache_[secondary_output_index_].mirror_mode ==
-              secondary_mode)) {
-        // We are already in mirror mode.
-        state = STATE_DUAL_MIRROR;
-      } else if ((output_cache_[primary_output_index_].ideal_mode ==
-              primary_mode) &&
-          (output_cache_[secondary_output_index_].ideal_mode ==
-              secondary_mode)) {
-        // Both outputs are in their "ideal" mode so check their Y-offsets to
-        // see which "ideal" configuration this is.
-        if (primary_height == output_cache_[secondary_output_index_].y) {
-          // Secondary is tiled first.
-          state = STATE_DUAL_SECONDARY_ONLY;
-        } else if (secondary_height == output_cache_[primary_output_index_].y) {
-          // Primary is tiled first.
-          state = STATE_DUAL_PRIMARY_ONLY;
-        }
-      }
-    }
-  }
-
-  return state;
-}
-
-bool OutputConfigurator::CycleDisplayMode() {
-  VLOG(1) << "CycleDisplayMode";
-  bool did_change = false;
-  if (is_running_on_chrome_os_) {
-    // Rules:
-    // - if there are 0 or 1 displays, do nothing and return false.
-    // - use y-coord of CRTCs to determine if we are mirror, primary-first, or
-    // secondary-first.  The cycle order is:
-    //   mirror->primary->secondary->mirror.
-    State new_state = STATE_INVALID;
-    switch (output_state_) {
-      case STATE_DUAL_MIRROR:
-        new_state = STATE_DUAL_PRIMARY_ONLY;
-        break;
-      case STATE_DUAL_PRIMARY_ONLY:
-        new_state = STATE_DUAL_SECONDARY_ONLY;
-        break;
-      case STATE_DUAL_SECONDARY_ONLY:
-        new_state = mirror_supported_ ?
-            STATE_DUAL_MIRROR :
-            STATE_DUAL_PRIMARY_ONLY;
-        break;
-      default:
-        // Do nothing - we aren't in a mode which we can rotate.
-        break;
-    }
-    if (STATE_INVALID != new_state)
-      did_change = SetDisplayMode(new_state);
-  }
-  return did_change;
-}
-
-bool OutputConfigurator::ScreenPowerSet(bool power_on, bool all_displays) {
-  VLOG(1) << "OutputConfigurator::SetScreensOn " << power_on
-          << " all displays " << all_displays;
-  bool success = false;
-  if (is_running_on_chrome_os_) {
-    Display* display = base::MessagePumpAuraX11::GetDefaultXDisplay();
-    CHECK(display != NULL);
-    XGrabServer(display);
-    Window window = DefaultRootWindow(display);
-    XRRScreenResources* screen = XRRGetScreenResources(display, window);
-    CHECK(screen != NULL);
-
-    // Set the CRTCs based on whether we want to turn the power on or off and
-    // select the outputs to operate on by name or all_displays.
-    for (int i = 0; i < output_count_; ++i) {
-      if (all_displays || output_cache_[i].is_internal) {
-        const int x = output_cache_[i].x;
-        const int y = output_cache_[i].y;
-        RROutput output = output_cache_[i].output;
-        RRCrtc crtc = output_cache_[i].crtc;
-        RRMode mode = None;
-        if (power_on) {
-          mode = (STATE_DUAL_MIRROR == output_state_) ?
-              output_cache_[i].mirror_mode :
-              output_cache_[i].ideal_mode;
-        }
-
-        VLOG(1) << "SET POWER crtc: " << crtc
-                << ", mode " << mode
-                << ", output " << output
-                << ", x " << x
-                << ", y " << y;
-        ConfigureCrtc(display,
-                      screen,
-                      crtc,
-                      x,
-                      y,
-                      mode,
-                      output);
-        output_cache_[i].is_powered_on = power_on;
-        success = true;
-      }
-    }
-
-    // Force the DPMS on since the driver doesn't always detect that it should
-    // turn on.
-    if (power_on) {
-      CHECK(DPMSEnable(display));
-      CHECK(DPMSForceLevel(display, DPMSModeOn));
-    }
-
-    XRRFreeScreenResources(screen);
-    XUngrabServer(display);
-  }
-  return success;
-}
-
-bool OutputConfigurator::SetDisplayMode(State new_state) {
-  if (output_state_ == STATE_INVALID ||
-      output_state_ == STATE_HEADLESS ||
-      output_state_ == STATE_SINGLE)
-    return false;
-
-  Display* display = base::MessagePumpAuraX11::GetDefaultXDisplay();
-  CHECK(display != NULL);
-  XGrabServer(display);
-  Window window = DefaultRootWindow(display);
-  XRRScreenResources* screen = XRRGetScreenResources(display, window);
-  CHECK(screen != NULL);
-
-  UpdateCacheAndXrandrToState(display,
-                              screen,
-                              window,
-                              new_state);
-  XRRFreeScreenResources(screen);
-  XUngrabServer(display);
-  return true;
-}
-
-bool OutputConfigurator::Dispatch(const base::NativeEvent& event) {
-  // Ignore this event if the Xrandr extension isn't supported.
-  if (is_running_on_chrome_os_ &&
-      (event->type - xrandr_event_base_ == RRNotify)) {
-    XEvent* xevent = static_cast<XEvent*>(event);
-    XRRNotifyEvent* notify_event =
-        reinterpret_cast<XRRNotifyEvent*>(xevent);
-    if (notify_event->subtype == RRNotify_OutputChange) {
-      XRROutputChangeNotifyEvent* output_change_event =
-          reinterpret_cast<XRROutputChangeNotifyEvent*>(xevent);
-      if ((output_change_event->connection == RR_Connected) ||
-          (output_change_event->connection == RR_Disconnected)) {
-        RecacheAndUseDefaultState();
-        CheckIsProjectingAndNotify();
-      }
-      // Ignore the case of RR_UnkownConnection.
-    }
-  }
-  return true;
-}
-
-void OutputConfigurator::CheckIsProjectingAndNotify() {
-  // Determine if there is an "internal" output and how many outputs are
-  // connected.
-  bool has_internal_output = false;
-  int connected_output_count = 0;
-  for (int i = 0; i < output_count_; ++i) {
-    if (output_cache_[i].is_connected) {
-      connected_output_count += 1;
-      has_internal_output |= output_cache_[i].is_internal;
-    }
-  }
-
-  // "Projecting" is defined as having more than 1 output connected while at
-  // least one of them is an internal output.
-  bool is_projecting = has_internal_output && (connected_output_count > 1);
-  chromeos::DBusThreadManager* manager = chromeos::DBusThreadManager::Get();
-  dbus::Bus* bus = manager->GetSystemBus();
-  dbus::ObjectProxy* power_manager_proxy = bus->GetObjectProxy(
-      power_manager::kPowerManagerServiceName,
-      dbus::ObjectPath(power_manager::kPowerManagerServicePath));
-  dbus::MethodCall method_call(
-      power_manager::kPowerManagerInterface,
-      power_manager::kSetIsProjectingMethod);
-  dbus::MessageWriter writer(&method_call);
-  writer.AppendBool(is_projecting);
-  power_manager_proxy->CallMethod(
-      &method_call,
-      dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
-      dbus::ObjectProxy::EmptyResponseCallback());
-}
-
-}  // namespace chromeos