Rename the remaining usage of Monitor to Display

ui/aura/monitor_change_observer_x11.cc

-// 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 "ui/aura/monitor_change_observer_x11.h"
-
-#include <algorithm>
-#include <map>
-#include <set>
-#include <vector>
-
-#include <X11/extensions/Xrandr.h>
-
-#include "base/message_pump_aurax11.h"
-#include "ui/aura/dispatcher_linux.h"
-#include "ui/aura/env.h"
-#include "ui/aura/monitor_manager.h"
-#include "ui/compositor/dip_util.h"
-#include "ui/gfx/display.h"
-
-namespace aura {
-namespace internal {
-
-namespace {
-
-// The DPI threshold to detect high density screen.
-// Higher DPI than this will use device_scale_factor=2.
-// Note: This value has to be kept in sync with the mouse/touchpad driver
-// which controls mouse pointer acceleration. If you need to update this value,
-// please update the bug (crosbug.com/31628) first and make sure that the
-// driver will use the same value.
-// This value also has to be kept in sync with the value in
-// chromeos/monitor/output_configurator.cc. See crbug.com/130188
-const unsigned int kHighDensityDIPThreshold = 160;
-
-// 1 inch in mm.
-const float kInchInMm = 25.4f;
-
-XRRModeInfo* FindMode(XRRScreenResources* screen_resources, XID current_mode) {
-  for (int m = 0; m < screen_resources->nmode; m++) {
-    XRRModeInfo *mode = &screen_resources->modes[m];
-    if (mode->id == current_mode)
-      return mode;
-  }
-  return NULL;
-}
-
-bool CompareDisplayY(const gfx::Display& lhs, const gfx::Display& rhs) {
-  return lhs.bounds_in_pixel().y() < rhs.bounds_in_pixel().y();
-}
-
-}  // namespace
-
-MonitorChangeObserverX11::MonitorChangeObserverX11()
-    : xdisplay_(base::MessagePumpAuraX11::GetDefaultXDisplay()),
-      x_root_window_(DefaultRootWindow(xdisplay_)),
-      xrandr_event_base_(0) {
-  int error_base_ignored;
-  XRRQueryExtension(xdisplay_, &xrandr_event_base_, &error_base_ignored);
-  static_cast<DispatcherLinux*>(Env::GetInstance()->GetDispatcher())->
-      AddDispatcherForRootWindow(this);
-}
-
-MonitorChangeObserverX11::~MonitorChangeObserverX11() {
-  static_cast<DispatcherLinux*>(Env::GetInstance()->GetDispatcher())->
-      RemoveDispatcherForRootWindow(this);
-}
-
-bool MonitorChangeObserverX11::Dispatch(const base::NativeEvent& event) {
-  if (event->type - xrandr_event_base_ == RRScreenChangeNotify) {
-    NotifyDisplayChange();
-  }
-  return true;
-}
-
-void MonitorChangeObserverX11::NotifyDisplayChange() {
-  if (!MonitorManager::use_fullscreen_host_window())
-    return;  // Use the default monitor that monitor manager determined.
-
-  XRRScreenResources* screen_resources =
-      XRRGetScreenResources(xdisplay_, x_root_window_);
-  std::map<XID, XRRCrtcInfo*> crtc_info_map;
-
-  for (int c = 0; c < screen_resources->ncrtc; c++) {
-    XID crtc_id = screen_resources->crtcs[c];
-    XRRCrtcInfo *crtc_info =
-        XRRGetCrtcInfo(xdisplay_, screen_resources, crtc_id);
-    crtc_info_map[crtc_id] = crtc_info;
-  }
-
-  std::vector<gfx::Display> displays;
-  std::set<int> y_coords;
-  for (int o = 0; o < screen_resources->noutput; o++) {
-    XRROutputInfo *output_info =
-        XRRGetOutputInfo(xdisplay_,
-                         screen_resources,
-                         screen_resources->outputs[o]);
-    if (output_info->connection != RR_Connected) {
-      XRRFreeOutputInfo(output_info);
-      continue;
-    }
-    XRRCrtcInfo* crtc_info = crtc_info_map[output_info->crtc];
-    if (!crtc_info) {
-      LOG(WARNING) << "Crtc not found for output: output=" << o;
-      continue;
-    }
-    XRRModeInfo* mode = FindMode(screen_resources, crtc_info->mode);
-    if (!mode) {
-      LOG(WARNING) << "Could not find a mode for the output: output=" << o;
-      continue;
-    }
-    // Mirrored monitors have the same y coordinates.
-    if (y_coords.find(crtc_info->y) != y_coords.end())
-      continue;
-    // TODO(oshima): Create unique ID for the monitor.
-    displays.push_back(gfx::Display(
-        0,
-        gfx::Rect(crtc_info->x, crtc_info->y, mode->width, mode->height)));
-
-    float device_scale_factor = 1.0f;
-    if (output_info->mm_width > 0 &&
-        (kInchInMm * mode->width / output_info->mm_width) >
-        kHighDensityDIPThreshold) {
-      device_scale_factor = 2.0f;
-    }
-    displays.back().set_device_scale_factor(device_scale_factor);
-    y_coords.insert(crtc_info->y);
-    XRRFreeOutputInfo(output_info);
-  }
-
-  // Free all allocated resources.
-  for (std::map<XID, XRRCrtcInfo*>::const_iterator iter = crtc_info_map.begin();
-       iter != crtc_info_map.end(); ++iter) {
-    XRRFreeCrtcInfo(iter->second);
-  }
-  XRRFreeScreenResources(screen_resources);
-
-  // PowerManager lays out the outputs vertically. Sort them by Y
-  // coordinates.
-  std::sort(displays.begin(), displays.end(), CompareDisplayY);
-  // TODO(oshima): Assisgn index as ID for now. Use unique ID.
-  int id = 0;
-  for (std::vector<gfx::Display>::iterator iter = displays.begin();
-       iter != displays.end(); ++iter, ++id)
-    (*iter).set_id(id);
-
-  Env::GetInstance()->monitor_manager()->OnNativeMonitorsChanged(displays);
-}
-
-}  // namespace internal
-}  // namespace aura