| // Copyright (c) 2016 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. |
| |
| #ifndef UI_EVENTS_KEYCODES_PLATFORM_KEY_MAP_WIN_H_ |
| #define UI_EVENTS_KEYCODES_PLATFORM_KEY_MAP_WIN_H_ |
| |
| #include <windows.h> |
| |
| #include <unordered_map> |
| |
| #include "base/hash.h" |
| #include "ui/events/events_base_export.h" |
| #include "ui/events/keycodes/dom/dom_key.h" |
| #include "ui/events/keycodes/keyboard_codes_win.h" |
| |
| namespace ui { |
| |
| enum class DomCode; |
| |
| class EVENTS_BASE_EXPORT PlatformKeyMap { |
| public: |
| // Create and load key map table with specified keyboard layout. |
| explicit PlatformKeyMap(HKL layout); |
| ~PlatformKeyMap(); |
| |
| // Returns the DomKey 'meaning' of |code| in the context of specified |
| // |ui_event_flags| and stored keyboard layout. |
| DomKey DomCodeAndFlagsToDomKey(DomCode code, |
| int ui_event_flags) const; |
| |
| // Returns the DomKey 'meaning' of |code| in the context of specified |
| // |ui_event_flags| and the keyboard layout of current thread. |
| // Updates a per-thread key map cache whenever the layout changes. |
| static DomKey DomCodeAndFlagsToDomKeyStatic( |
| DomCode code, |
| int ui_event_flags); |
| |
| private: |
| PlatformKeyMap(); |
| |
| // TODO(chongz): Expose this function in response to WM_INPUTLANGCHANGE. |
| void UpdateLayout(HKL layout); |
| |
| HKL keyboard_layout_ = 0; |
| |
| // TODO(chongz): Change type to DomCode when we got a generic pair hash class. |
| typedef std::pair<int /*DomCode*/, int /*EventFlags*/> DomCodeEventFlagsPair; |
| typedef std::unordered_map<DomCodeEventFlagsPair, |
| DomKey, |
| base::IntPairHash<std::pair<int, int>>> |
| DomCodeToKeyMap; |
| DomCodeToKeyMap code_to_key_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PlatformKeyMap); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_EVENTS_KEYCODES_PLATFORM_KEY_MAP_WIN_H_ |