| // Copyright 2010-2014, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
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| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
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| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // Utilities for commands::KeyEvent. |
| |
| #ifndef MOZC_SESSION_KEY_EVENT_UTIL_H_ |
| #define MOZC_SESSION_KEY_EVENT_UTIL_H_ |
| |
| #include "base/port.h" |
| |
| namespace mozc { |
| namespace commands { |
| class KeyEvent; |
| } // namespace commands |
| |
| typedef uint64 KeyInformation; |
| |
| // This is pure static class. |
| class KeyEventUtil { |
| public: |
| static uint32 GetModifiers(const commands::KeyEvent &key_event); |
| |
| // |Modifiers(16bit)|SpecialKey(16bit)|Unicode(32bit)| |
| static bool GetKeyInformation(const commands::KeyEvent &key_event, |
| KeyInformation *key); |
| |
| // Normalizes given key event for key command looking-up. This function does |
| // - remove commands::KeyEvent::CAPS from the modifier keys |
| // - revert the flip of alphabetical key code caused by CapsLock |
| // so that shortcut keys can be used as if CapsLock was not enabled. b/5627459 |
| // In addition, this function removes left / right specified modifiers. |
| static void NormalizeModifiers(const commands::KeyEvent &key_event, |
| commands::KeyEvent *new_key_event); |
| |
| // Normalizes a numpad key to a normal key (e.g. NUMPAD0 => '0') |
| static void NormalizeNumpadKey(const commands::KeyEvent &key_event, |
| commands::KeyEvent *new_key_event); |
| |
| // Removes modifier keys which are specified by |remove_modifiers|. |
| static void RemoveModifiers(const commands::KeyEvent &key_event, |
| uint32 remove_modifiers, |
| commands::KeyEvent *new_key_event); |
| |
| // Returns a fallback keyevent generated from key_event. In the |
| // current implementation, if the input key_event does not contains |
| // any special keys or modifier keys, that printable key will be replaced |
| // with the ASCII special key. |
| static bool MaybeGetKeyStub(const commands::KeyEvent &key_event, |
| KeyInformation *key); |
| |
| static bool HasAlt(uint32 modifiers); |
| static bool HasCtrl(uint32 modifiers); |
| static bool HasShift(uint32 modifiers); |
| static bool HasCaps(uint32 modifiers); |
| |
| // These functions doesn't consider CAPS. |
| static bool IsAlt(uint32 modifiers); |
| static bool IsCtrl(uint32 modifiers); |
| static bool IsShift(uint32 modifiers); |
| static bool IsAltCtrl(uint32 modifiers); |
| static bool IsAltShift(uint32 modifiers); |
| static bool IsCtrlShift(uint32 modifiers); |
| static bool IsAltCtrlShift(uint32 modifiers); |
| |
| static bool IsLowerAlphabet(const commands::KeyEvent &key_event); |
| static bool IsUpperAlphabet(const commands::KeyEvent &key_event); |
| static bool IsNumpadKey(const commands::KeyEvent &key_event); |
| |
| private: |
| DISALLOW_IMPLICIT_CONSTRUCTORS(KeyEventUtil); |
| }; |
| |
| } // namespace mozc |
| |
| #endif // MOZC_SESSION_KEY_EVENT_UTIL_H_ |