ui/events/ozone/layout/xkb/xkb_key_code_converter.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_EVENTS_OZONE_LAYOUT_XKB_XKB_KEY_CODE_CONVERTER_H_
   6 #define UI_EVENTS_OZONE_LAYOUT_XKB_XKB_KEY_CODE_CONVERTER_H_
   7
   8 #include <xkbcommon/xkbcommon.h>
   9
  10 namespace ui {
  11
  12 enum class DomCode;
  13
  14 // XKB scan code values are platform-dependent; this provides the layout engine
  15 // with the mapping from DomCode to xkb_keycode_t. (This mapping is in principle
  16 // derivable from the XKB keyboard layout, but xkbcommon does not provide a
  17 // practical interface to do so.)
  18 class EVENTS_OZONE_LAYOUT_EXPORT XkbKeyCodeConverter {
  19  public:
  20   XkbKeyCodeConverter();
  21   virtual ~XkbKeyCodeConverter();
  22   xkb_keycode_t InvalidXkbKeyCode() const { return invalid_xkb_keycode_; }
  23   virtual xkb_keycode_t DomCodeToXkbKeyCode(DomCode dom_code) const = 0;
  24
  25  protected:
  26   xkb_keycode_t invalid_xkb_keycode_;
  27 };
  28
  29 }  // namespace ui
  30
  31 #endif  // UI_EVENTS_OZONE_LAYOUT_XKB_XKB_KEY_CODE_CONVERTER_H_