Disable XI2 events on mirror window

ash/display/mirror_window_controller.cc

 // Copyright (c) 2013 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/mirror_window_controller.h"
 
 #if defined(USE_X11)
 #include <X11/Xlib.h>
+#include <X11/extensions/XInput2.h>
 
 // Xlib.h defines RootWindow.
 #undef RootWindow
 #endif
 
 #include "ash/display/cursor_window_controller.h"
 #include "ash/display/display_controller.h"
 #include "ash/display/display_info.h"
 #include "ash/display/display_manager.h"
 #include "ash/display/root_window_transformers.h"
@@ skipping 19 matching lines @@
 
 namespace ash {
 namespace {
 
 #if defined(USE_X11)
 // Mirror window shouldn't handle input events.
 void DisableInput(XID window) {
   long event_mask = ExposureMask | VisibilityChangeMask |
       StructureNotifyMask | PropertyChangeMask;
   XSelectInput(gfx::GetXDisplay(), window, event_mask);
+  unsigned char mask[XIMaskLen(XI_LASTEVENT)];
+  memset(mask, 0, sizeof(mask));

[oshima, 2014/09/11 17:33:55]

nit:

unsigned char mask[..] = {0}

[kpschoedel, 2014/09/11 17:49:19]

Done.

+  XIEventMask evmask;
+  evmask.deviceid = XIAllDevices;
+  evmask.mask_len = sizeof(mask);
+  evmask.mask = mask;
+  XISelectEvents(gfx::GetXDisplay(), window, &evmask, 1);
 }
 #endif
 
 class NoneCaptureClient : public aura::client::CaptureClient {
  public:
   NoneCaptureClient() {}
   virtual ~NoneCaptureClient() {}
 
  private:
   // Does a capture on the |window|.
@@ skipping 117 matching lines @@
       display_manager->mirrored_display_id());
   const DisplayInfo& source_display_info = display_manager->GetDisplayInfo(
       Shell::GetScreen()->GetPrimaryDisplay().id());
   DCHECK(display_manager->IsMirrored());
   return scoped_ptr<RootWindowTransformer>(
       CreateRootWindowTransformerForMirroredDisplay(source_display_info,
                                                     mirror_display_info));
 }
 
 }  // namespace ash