371 lines
9.7 KiB
C++
371 lines
9.7 KiB
C++
#ifndef _library__keymapper__hpp__included__
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#define _library__keymapper__hpp__included__
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#include "command.hpp"
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#include <set>
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#include <list>
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#include <stdexcept>
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#include <string>
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#include "keyboard.hpp"
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class inverse_bind;
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class controller_key;
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std::pair<keyboard_key*, unsigned> keymapper_lookup_subkey(keyboard& kbd, const std::string& name, bool axis)
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throw(std::bad_alloc, std::runtime_error);
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/**
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* Key specifier
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*/
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struct key_specifier
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{
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/**
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* Create a new key specifier (invalid).
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*/
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key_specifier() throw(std::bad_alloc);
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/**
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* Create a new key specifier from keyspec.
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*
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* Parameter keyspec: The key specifier.
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*/
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key_specifier(const std::string& keyspec) throw(std::bad_alloc, std::runtime_error);
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/**
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* Get the key specifier as a keyspec.
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*/
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operator std::string() throw(std::bad_alloc);
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/**
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* Is valid?
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*/
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operator bool() throw();
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/**
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* Is not valid?
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*/
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bool operator!() throw();
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/**
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* Clear the keyspec.
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*/
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void clear() throw();
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/**
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* Compare for equality.
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*/
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bool operator==(const key_specifier& keyspec);
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/**
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* Compare for not-equality.
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*/
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bool operator!=(const key_specifier& keyspec);
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/**
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* The modifier.
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*/
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std::string mod;
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/**
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* The mask.
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*/
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std::string mask;
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/**
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* The key itself.
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*/
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std::string key;
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};
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/**
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* Keyboard mapper. Maps keyboard keys into commands.
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*/
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class keyboard_mapper : public keyboard_event_listener
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{
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public:
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/**
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* Create new keyboard mapper.
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*/
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keyboard_mapper(keyboard& kbd, command::group& domain) throw(std::bad_alloc);
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/**
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* Destroy a keyboard mapper.
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*/
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~keyboard_mapper() throw();
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/**
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* Binds a key, erroring out if binding would conflict with existing one.
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*
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* parameter mod: Modifier set to require to be pressed.
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* parameter modmask: Modifier set to take into account.
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* parameter keyname: Key to bind the action to.
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* parameter command: The command to bind.
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* throws std::bad_alloc: Not enough memory.
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* throws std::runtime_error: The binding would conflict with existing one or invalid modifier/key.
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*/
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void bind(std::string mod, std::string modmask, std::string keyname, std::string command)
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throw(std::bad_alloc, std::runtime_error);
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/**
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* Unbinds a key, erroring out if binding does not exist.
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*
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* parameter mod: Modifier set to require to be pressed.
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* parameter modmask: Modifier set to take into account.
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* parameter keyname: Key to bind the action to.
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* throws std::bad_alloc: Not enough memory.
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* throws std::runtime_error: The binding does not exist.
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*/
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void unbind(std::string mod, std::string modmask, std::string keyname) throw(std::bad_alloc,
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std::runtime_error);
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/**
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* Get keys bound.
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*
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* Returns: The set of keyspecs that are bound.
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*/
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std::list<key_specifier> get_bindings() throw(std::bad_alloc);
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/**
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* Get command for key.
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*/
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std::string get(const key_specifier& keyspec) throw(std::bad_alloc);
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/**
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* Bind command for key.
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*
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* Parameter keyspec: The key specifier to bind to.
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* Parameter cmd: The command to bind. If "", the key is unbound.
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*/
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void set(const key_specifier& keyspec, const std::string& cmd) throw(std::bad_alloc, std::runtime_error);
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/**
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* Get set of inverse binds.
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*
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* Returns: The set of all inverses.
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*/
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std::set<inverse_bind*> get_inverses() throw(std::bad_alloc);
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/**
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* Find inverse bind by command.
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*
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* Parameter command: The command.
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* Returns: The inverse bind, or NULL if none.
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*/
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inverse_bind* get_inverse(const std::string& command) throw(std::bad_alloc);
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/**
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* Get set of controller keys.
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*
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* Returns: The set of all controller keys.
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*/
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std::set<controller_key*> get_controller_keys() throw(std::bad_alloc);
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/**
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* Get specific controller key.
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*/
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controller_key* get_controllerkey(const std::string& command) throw(std::bad_alloc);
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/**
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* Get list of controller keys for specific keyboard key.
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*/
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std::list<controller_key*> get_controllerkeys_kbdkey(keyboard_key* kbdkey) throw(std::bad_alloc);
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/**
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* Proxy for inverse bind registrations.
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*/
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struct _inverse_proxy
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{
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_inverse_proxy(keyboard_mapper& mapper) : _mapper(mapper) {}
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void do_register(const std::string& name, inverse_bind& ibind)
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{
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_mapper.do_register_inverse(name, ibind);
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}
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void do_unregister(const std::string& name)
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{
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_mapper.do_unregister_inverse(name);
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}
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private:
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keyboard_mapper& _mapper;
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} inverse_proxy;
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/**
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* Proxy for controller key registrations.
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*/
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struct _controllerkey_proxy
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{
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_controllerkey_proxy(keyboard_mapper& mapper) : _mapper(mapper) {}
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void do_register(const std::string& name, controller_key& ckey)
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{
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_mapper.do_register_ckey(name, ckey);
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}
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void do_unregister(const std::string& name)
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{
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_mapper.do_unregister_ckey(name);
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}
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private:
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keyboard_mapper& _mapper;
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} controllerkey_proxy;
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/**
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* Register inverse bind.
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*/
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void do_register_inverse(const std::string& name, inverse_bind& bind) throw(std::bad_alloc);
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/**
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* Unregister inverse bind.
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*/
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void do_unregister_inverse(const std::string& name) throw(std::bad_alloc);
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/**
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* Register controller key.
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*/
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void do_register_ckey(const std::string& name, controller_key& ckey) throw(std::bad_alloc);
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/**
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* Unregister inverse bind.
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*/
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void do_unregister_ckey(const std::string& name) throw(std::bad_alloc);
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/**
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* Get keyboard.
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*/
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keyboard& get_keyboard() throw();
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/**
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* Get command group to run commands in..
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*/
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command::group& get_command_group() throw();
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/**
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* Fixup command based on polarity.
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*
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* Parameter cmd: The raw command.
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* Parameter polarity: Polarity (true is rising edge, false is falling edge).
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* Returns: The fixed command, or "" if nothing should be run.
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*/
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static std::string fixup_command_polarity(std::string cmd, bool polarity) throw(std::bad_alloc);
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private:
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struct triplet
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{
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triplet(keyboard_modifier_set mod, keyboard_modifier_set mask, keyboard_key& key, unsigned subkey);
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triplet(keyboard_key& key, unsigned subkey);
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triplet(keyboard& k, const key_specifier& spec);
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bool operator<(const struct triplet& a) const;
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bool operator==(const struct triplet& a) const;
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bool operator<=(const struct triplet& a) const { return !(a > *this); }
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bool operator!=(const struct triplet& a) const { return !(a == *this); }
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bool operator>=(const struct triplet& a) const { return !(a < *this); }
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bool operator>(const struct triplet& a) const { return (a < *this); }
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key_specifier as_keyspec() const throw(std::bad_alloc);
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bool index;
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keyboard_modifier_set mod;
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keyboard_modifier_set mask;
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keyboard_key* key;
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unsigned subkey;
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};
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void change_command(const key_specifier& spec, const std::string& old, const std::string& newc);
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void on_key_event(keyboard_modifier_set& mods, keyboard_key& key, keyboard_event& event);
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void on_key_event_subkey(keyboard_modifier_set& mods, keyboard_key& key, unsigned skey, bool polarity);
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keyboard_mapper(const keyboard_mapper&);
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keyboard_mapper& operator=(const keyboard_mapper&);
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std::map<std::string, inverse_bind*> ibinds;
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std::map<std::string, controller_key*> ckeys;
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std::map<triplet, std::string> bindings;
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std::set<keyboard_key*> listening;
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keyboard& kbd;
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command::group& domain;
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mutex_class mutex;
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};
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/**
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* Inverse bind. Can map up to 2 keys to some command (and follows forward binds).
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*/
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class inverse_bind
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{
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public:
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/**
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* Create inverse bind.
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*
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* Parameter mapper: The keyboard mapper to follow.
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* Parameter command: Command this is for.
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* Parameter name: Name of inverse key.
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*/
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inverse_bind(keyboard_mapper& mapper, const std::string& command, const std::string& name)
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throw(std::bad_alloc);
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/**
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* Destructor.
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*/
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~inverse_bind() throw();
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/**
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* Get keyspec.
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*
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* Parameter index: Index of the keyspec to get.
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* Returns: The keyspec.
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*/
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key_specifier get(unsigned index) throw(std::bad_alloc);
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/**
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* Clear key (subsequent keys fill the gap).
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*
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* Parameter index: Index of key to clear.
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*/
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void clear(unsigned index) throw(std::bad_alloc);
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/**
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* Add key to set.
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*
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* Parameter keyspec: The new keyspec.
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*/
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void append(const key_specifier& keyspec) throw(std::bad_alloc);
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/**
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* Get name for command.
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*
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* Returns: The name.
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*/
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std::string getname() throw(std::bad_alloc);
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private:
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friend class keyboard_mapper;
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inverse_bind(const inverse_bind&);
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inverse_bind& operator=(const inverse_bind&);
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void addkey(const key_specifier& keyspec);
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keyboard_mapper& mapper;
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std::string cmd;
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std::string oname;
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std::vector<key_specifier> specs;
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mutex_class mutex;
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};
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/**
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* A controller key.
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*
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* Can overlap with any other bind.
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*/
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class controller_key : public keyboard_event_listener
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{
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public:
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/**
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* Create a new controller key.
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*
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* Parameter mapper: The keyboard mapper to follow.
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* Parameter command: Command to run.
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* Parameter name: Name of controller key.
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* Parameter axis: If true, create a axis-type key.
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*/
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controller_key(keyboard_mapper& mapper, const std::string& command, const std::string& name,
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bool axis = false) throw(std::bad_alloc);
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/**
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* Destructor.
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*/
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~controller_key() throw();
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/**
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* Get the trigger key.
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*/
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std::pair<keyboard_key*, unsigned> get(unsigned index) throw();
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/**
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* Get the trigger key.
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*/
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std::string get_string(unsigned index) throw(std::bad_alloc);
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/**
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* Set the trigger key (appends).
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*/
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void append(keyboard_key* key, unsigned subkey) throw();
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/**
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* Set the trigger key (appends).
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*/
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void append(const std::string& key) throw(std::bad_alloc, std::runtime_error);
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/**
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* Remove the trigger key.
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*/
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void remove(keyboard_key* key, unsigned subkey) throw();
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/**
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* Get the command.
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*/
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const std::string& get_command() const throw() { return cmd; }
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/**
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* Get the name.
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*/
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const std::string& get_name() const throw() { return oname; }
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/**
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* Is axis-type?
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*/
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bool is_axis() const throw() { return axis; }
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private:
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void on_key_event(keyboard_modifier_set& mods, keyboard_key& key, keyboard_event& event);
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keyboard_mapper& mapper;
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std::string cmd;
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std::string oname;
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std::vector<std::pair<keyboard_key*, unsigned>> keys;
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bool axis;
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mutex_class mutex;
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};
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#endif
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