| // Copyright 2014 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_OZONE_EVDEV_KEYBOARD_EVDEV_H_ |
| #define UI_EVENTS_OZONE_EVDEV_KEYBOARD_EVDEV_H_ |
| |
| #include <linux/input.h> |
| |
| #include <bitset> |
| |
| #include "base/macros.h" |
| #include "base/time/time.h" |
| #include "base/timer/timer.h" |
| #include "ui/events/ozone/evdev/event_auto_repeat_handler.h" |
| #include "ui/events/ozone/evdev/event_device_util.h" |
| #include "ui/events/ozone/evdev/event_dispatch_callback.h" |
| #include "ui/events/ozone/evdev/events_ozone_evdev_export.h" |
| #include "ui/events/ozone/layout/keyboard_layout_engine.h" |
| |
| namespace ui { |
| |
| class EventModifiers; |
| enum class DomCode; |
| |
| // Keyboard for evdev. |
| // |
| // This object is responsible for combining all attached keyboards into |
| // one logical keyboard, applying modifiers & implementing key repeat. |
| // |
| // It also currently also applies the layout. |
| class EVENTS_OZONE_EVDEV_EXPORT KeyboardEvdev |
| : public EventAutoRepeatHandler::Delegate { |
| public: |
| KeyboardEvdev(EventModifiers* modifiers, |
| KeyboardLayoutEngine* keyboard_layout_engine, |
| const EventDispatchCallback& callback); |
| ~KeyboardEvdev(); |
| |
| // Handlers for raw key presses & releases. |
| // |
| // |code| is a Linux key code (from <linux/input.h>). |down| represents the |
| // key state. |suppress_auto_repeat| prevents the event from triggering |
| // auto-repeat, if enabled. |device_id| uniquely identifies the source |
| // keyboard device. |
| void OnKeyChange(unsigned int code, |
| bool down, |
| bool suppress_auto_repeat, |
| base::TimeTicks timestamp, |
| int device_id); |
| |
| // Handle Caps Lock modifier. |
| void SetCapsLockEnabled(bool enabled); |
| bool IsCapsLockEnabled(); |
| |
| // Configuration for key repeat. |
| bool IsAutoRepeatEnabled(); |
| void SetAutoRepeatEnabled(bool enabled); |
| void SetAutoRepeatRate(const base::TimeDelta& delay, |
| const base::TimeDelta& interval); |
| void GetAutoRepeatRate(base::TimeDelta* delay, base::TimeDelta* interval); |
| |
| // Handle keyboard layout changes. |
| bool SetCurrentLayoutByName(const std::string& layout_name); |
| |
| private: |
| void UpdateModifier(int modifier_flag, bool down); |
| void RefreshModifiers(); |
| void UpdateCapsLockLed(); |
| |
| // EventAutoRepeatHandler::Delegate |
| void DispatchKey(unsigned int key, |
| bool down, |
| bool repeat, |
| base::TimeTicks timestamp, |
| int device_id) override; |
| |
| // Aggregated key state. There is only one bit of state per key; we do not |
| // attempt to count presses of the same key on multiple keyboards. |
| // |
| // A key is down iff the most recent event pertaining to that key was a key |
| // down event rather than a key up event. Therefore, a particular key position |
| // can be considered released even if it is being depresssed on one or more |
| // keyboards. |
| std::bitset<KEY_CNT> key_state_; |
| |
| // Callback for dispatching events. |
| EventDispatchCallback callback_; |
| |
| // Shared modifier state. |
| EventModifiers* modifiers_; |
| |
| // Shared layout engine. |
| KeyboardLayoutEngine* keyboard_layout_engine_; |
| |
| // Key repeat handler. |
| EventAutoRepeatHandler auto_repeat_handler_; |
| |
| base::WeakPtrFactory<KeyboardEvdev> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(KeyboardEvdev); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_EVENTS_OZONE_EVDEV_KEYBOARD_EVDEV_H_ |