aura-linux: Supports ISO Level3 Latch key.

ui/events/event.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/events/event.h"
 
 #if defined(USE_X11)
 #include <X11/extensions/XInput2.h>
 #include <X11/Xlib.h>
 #endif
@@ skipping 545 matching lines @@
 #if defined(OS_WIN)
   return (native_event().message == WM_CHAR) ? key_code_ :
       GetCharacterFromKeyCode(key_code_, flags());
 #elif defined(USE_X11)
   if (!native_event())
     return GetCharacterFromKeyCode(key_code_, flags());
 
   DCHECK(native_event()->type == KeyPress ||
          native_event()->type == KeyRelease);
 
-  uint16 ch = 0;
-  if (!IsControlDown())
-    ch = GetCharacterFromXEvent(native_event());
-  return ch ? ch : GetCharacterFromKeyCode(key_code_, flags());
+  // When a control key is held, prefer ASCII characters to non ASCII
+  // characters in order to use it for shortcut keys.  GetCharacterFromKeyCode
+  // returns 'a' for VKEY_A even if the key is actually bound to 'à' in X11.
+  // GetCharacterFromXEvent returns 'à' in that case.
+  return IsControlDown() ?
+      GetCharacterFromKeyCode(key_code_, flags()) :
+      GetCharacterFromXEvent(native_event());
 #else
   if (native_event()) {
     DCHECK(EventTypeFromNative(native_event()) == ET_KEY_PRESSED ||
            EventTypeFromNative(native_event()) == ET_KEY_RELEASED);
   }
 
   return GetCharacterFromKeyCode(key_code_, flags());
 #endif
 }
 
@@ skipping 143 matching lines @@
 int GestureEvent::GetLowestTouchId() const {
   if (touch_ids_bitfield_ == 0)
     return -1;
   int i = -1;
   // Find the index of the least significant 1 bit
   while (!(1 << ++i & touch_ids_bitfield_));
   return i;
 }
 
 }  // namespace ui