Store rotation/ui scale to local state.

ash/display/display_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 "ash/display/display_change_observer_x11.h"
 
 #include <algorithm>
 #include <map>
 #include <set>
 #include <vector>
 
 #include <X11/extensions/Xrandr.h>
 
 #include "ash/display/display_info.h"
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
 #include "base/message_pump_aurax11.h"
+#include "ash/display/display_controller.h"
 #include "grit/ash_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/x/x11_util.h"
 #include "ui/compositor/dip_util.h"
 #include "ui/gfx/display.h"
 
 namespace ash {
 namespace internal {
 
 namespace {
@@ skipping 93 matching lines @@
           id == gfx::Display::kInvalidDisplayID ? output_index : id);
       break;
     }
   }
   XRRFreeScreenResources(screen_resources);
 }
 
 DisplayChangeObserverX11::~DisplayChangeObserverX11() {
 }
 
+chromeos::OutputState DisplayChangeObserverX11::GetStateForOutputs(
+    const std::vector<RROutput>& outputs) const {
+  CHECK(outputs.size() == 2);
+  DisplayIdPair pair = std::make_pair(GetDisplayId(outputs[0], 0),
+                                      GetDisplayId(outputs[1], 1));
+  DisplayLayout layout = Shell::GetInstance()->display_controller()->
+      GetRegisteredDisplayLayout(pair);
+  return layout.mirrored ?
+      chromeos::STATE_DUAL_MIRROR : chromeos::STATE_DUAL_EXTENDED;
+}
+
 void DisplayChangeObserverX11::OnDisplayModeChanged() {
   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;
@@ skipping 64 matching lines @@
     XRRFreeCrtcInfo(iter->second);
   }
   XRRFreeScreenResources(screen_resources);
 
   // DisplayManager can be null during the boot.
   Shell::GetInstance()->display_manager()->OnNativeDisplaysChanged(displays);
 }
 
 }  // namespace internal
 }  // namespace ash