ascii_composer.h

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//
// Copyright RIME Developers
// Distributed under the BSD License
//
// 2011-12-18 GONG Chen <chen.sst@gmail.com>
//
#ifndef RIME_ASCII_COMPOSER_H_
#define RIME_ASCII_COMPOSER_H_
 
#include <chrono>
#include <rime/common.h>
#include <rime/component.h>
#include <rime/processor.h>
 
namespace rime {
 
class Context;
class Schema;
 
enum AsciiModeSwitchStyle {
  kAsciiModeSwitchNoop,
  kAsciiModeSwitchInline,
  kAsciiModeSwitchCommitText,
  kAsciiModeSwitchCommitCode,
  kAsciiModeSwitchClear,
  kAsciiModeSet,
  kAsciiModeUnset,
};
 
using AsciiModeSwitchKeyBindings = map<int /* keycode */, AsciiModeSwitchStyle>;
 
class AsciiComposer : public Processor {
 public:
  AsciiComposer(const Ticket& ticket);
  ~AsciiComposer();
 
  virtual ProcessResult ProcessKeyEvent(const KeyEvent& key_event);
 
 protected:
  ProcessResult ProcessCapsLock(const KeyEvent& key_event);
  void LoadConfig(Schema* schema);
  bool ToggleAsciiModeWithKey(int key_code);
  void SwitchAsciiMode(bool ascii_mode, AsciiModeSwitchStyle style);
  void OnContextUpdate(Context* ctx);
 
  // config options
  AsciiModeSwitchKeyBindings bindings_;
  AsciiModeSwitchStyle caps_lock_switch_style_ = kAsciiModeSwitchNoop;
  bool good_old_caps_lock_ = false;
  // state
  bool toggle_with_caps_ = false;
  bool shift_key_pressed_ = false;
  bool ctrl_key_pressed_ = false;
  bool alt_key_pressed_ = false;
  bool super_key_pressed_ = false;
  using TimePoint = std::chrono::steady_clock::time_point;
  TimePoint toggle_expired_;
  connection connection_;
};
 
}  // namespace rime
 
#endif  // RIME_ASCII_COMPOSER_H_