Keyboard.hh

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#ifndef KEYBOARD_HH
#define KEYBOARD_HH
 
#include "KeyboardSettings.hh"
#include "MSXEventListener.hh"
#include "StateChangeListener.hh"
#include "UnicodeKeymap.hh"
 
#include "Event.hh"
#include "EventListener.hh"
#include "RecordedCommand.hh"
#include "Schedulable.hh"
#include "SimpleDebuggable.hh"
#include "serialize_meta.hh"
 
#include <array>
#include <cstdint>
#include <deque>
#include <span>
#include <string_view>
#include <vector>
 
namespace openmsx {
 
class MSXMotherBoard;
class Scheduler;
class CommandController;
class DeviceConfig;
class EventDistributor;
class MSXEventDistributor;
class StateChangeDistributor;
class StateChange;
class TclObject;
class Interpreter;
 
struct KeyCodeMsxMapping {
        SDL_Keycode hostKeyCode;
        KeyMatrixPosition msx;
};
struct ScanCodeMsxMapping {
        SDL_Scancode hostScanCode;
        KeyMatrixPosition msx;
};
 
class Keyboard final : private MSXEventListener, private StateChangeListener
                     , private Schedulable
{
public:
        static constexpr int MAX_KEYSYM = 0x150;
        enum class Matrix { MSX, SVI, CVJOY, SEGA, NUM };
 
        Keyboard(MSXMotherBoard& motherBoard, Scheduler& scheduler,
                 CommandController& commandController,
                 EventDistributor& eventDistributor,
                 MSXEventDistributor& msxEventDistributor,
                 StateChangeDistributor& stateChangeDistributor,
                 Matrix matrix, const DeviceConfig& config);
 
        ~Keyboard();
 
        [[nodiscard]] const MsxChar2Unicode& getMsxChar2Unicode() const;
 
        [[nodiscard]] std::span<const uint8_t, KeyMatrixPosition::NUM_ROWS> getKeys() const;
 
        void transferHostKeyMatrix(const Keyboard& source);
        void setFocus(bool newFocus, EmuTime::param time);
 
        template<typename Archive>
        void serialize(Archive& ar, unsigned version);
 
private:
        // MSXEventListener
        void signalMSXEvent(const Event& event,
                            EmuTime::param time) noexcept override;
        // StateChangeListener
        void signalStateChange(const StateChange& event) override;
        void stopReplay(EmuTime::param time) noexcept override;
 
        // Schedulable
        void executeUntil(EmuTime::param time) override;
 
        void syncHostKeyMatrix(EmuTime::param time);
        void pressKeyMatrixEvent(EmuTime::param time, KeyMatrixPosition pos);
        void releaseKeyMatrixEvent(EmuTime::param time, KeyMatrixPosition pos);
        void changeKeyMatrixEvent (EmuTime::param time, uint8_t row, uint8_t newValue);
 
        void processCapslockEvent(EmuTime::param time, bool down);
        void processCodeKanaChange(EmuTime::param time, bool down);
        void processGraphChange(EmuTime::param time, bool down);
        void processKeypadEnterKey(EmuTime::param time, bool down);
        void processSdlKey(EmuTime::param time, SDLKey key);
        bool processQueuedEvent(const Event& event, EmuTime::param time);
        bool processKeyEvent(EmuTime::param time, bool down, const KeyEvent& keyEvent);
        void updateKeyMatrix(EmuTime::param time, bool down, KeyMatrixPosition pos);
        void processCmd(Interpreter& interp, std::span<const TclObject> tokens, bool up);
        bool pressUnicodeByUser(
                        EmuTime::param time, UnicodeKeymap::KeyInfo keyInfo, unsigned unicode,
                        bool down);
        uint8_t pressAscii(unsigned unicode, bool down);
        void pressLockKeys(uint8_t lockKeysMask, bool down);
        [[nodiscard]] bool commonKeys(unsigned unicode1, unsigned unicode2) const;
        void debug(const char* format, ...) const;
 
        uint8_t needsLockToggle(const UnicodeKeymap::KeyInfo& keyInfo) const;
 
private:
        CommandController& commandController;
        MSXEventDistributor& msxEventDistributor;
        StateChangeDistributor& stateChangeDistributor;
 
        std::vector<KeyCodeMsxMapping> keyCodeTab;
        std::vector<ScanCodeMsxMapping> scanCodeTab;
 
        const array_with_enum_index<UnicodeKeymap::KeyInfo::Modifier, KeyMatrixPosition>& modifierPos;
 
        struct KeyMatrixUpCmd final : RecordedCommand {
                KeyMatrixUpCmd(CommandController& commandController,
                               StateChangeDistributor& stateChangeDistributor,
                               Scheduler& scheduler);
                void execute(std::span<const TclObject> tokens, TclObject& result,
                             EmuTime::param time) override;
                [[nodiscard]] std::string help(std::span<const TclObject> tokens) const override;
        } keyMatrixUpCmd;
 
        struct KeyMatrixDownCmd final : RecordedCommand {
                KeyMatrixDownCmd(CommandController& commandController,
                                 StateChangeDistributor& stateChangeDistributor,
                                 Scheduler& scheduler);
                void execute(std::span<const TclObject> tokens, TclObject& result,
                             EmuTime::param time) override;
                [[nodiscard]] std::string help(std::span<const TclObject> tokens) const override;
        } keyMatrixDownCmd;
 
        class KeyInserter final : public RecordedCommand, public Schedulable {
        public:
                KeyInserter(CommandController& commandController,
                            StateChangeDistributor& stateChangeDistributor,
                            Scheduler& scheduler);
                [[nodiscard]] bool isActive() const { return pendingSyncPoint(); }
                template<typename Archive>
                void serialize(Archive& ar, unsigned version);
 
        private:
                void type(std::string_view str);
                void reschedule(EmuTime::param time);
 
                // Command
                void execute(std::span<const TclObject> tokens, TclObject& result,
                             EmuTime::param time) override;
                [[nodiscard]] std::string help(std::span<const TclObject> tokens) const override;
                void tabCompletion(std::vector<std::string>& tokens) const override;
 
                // Schedulable
                void executeUntil(EmuTime::param time) override;
 
        private:
                std::string text_utf8;
                unsigned last = 0;
                uint8_t lockKeysMask = 0;
                bool releaseLast = false;
                uint8_t oldLocksOn = 0;
 
                bool releaseBeforePress = false;
                int typingFrequency = 15;
        } keyTypeCmd;
 
        struct Msxcode2UnicodeCmd final : public Command {
                explicit Msxcode2UnicodeCmd(CommandController& commandController);
                void execute(std::span<const TclObject> tokens, TclObject& result) override;
                [[nodiscard]] std::string help(std::span<const TclObject> tokens) const override;
        } msxcode2UnicodeCmd;
 
        struct Unicode2MsxcodeCmd final : public Command {
                explicit Unicode2MsxcodeCmd(CommandController& commandController);
                void execute(std::span<const TclObject> tokens, TclObject& result) override;
                [[nodiscard]] std::string help(std::span<const TclObject> tokens) const override;
        } unicode2MsxcodeCmd;
 
        class CapsLockAligner final : private EventListener, private Schedulable {
        public:
                CapsLockAligner(EventDistributor& eventDistributor,
                                Scheduler& scheduler);
                ~CapsLockAligner();
 
        private:
                // EventListener
                bool signalEvent(const Event& event) override;
 
                // Schedulable
                void executeUntil(EmuTime::param time) override;
 
                void alignCapsLock(EmuTime::param time);
 
        private:
                EventDistributor& eventDistributor;
 
                enum CapsLockAlignerStateType {
                        MUST_ALIGN_CAPSLOCK, MUST_DISTRIBUTE_KEY_RELEASE, IDLE
                } state = IDLE;
        } capsLockAligner;
 
        KeyboardSettings keyboardSettings;
 
        class MsxKeyEventQueue final : public Schedulable {
        public:
                MsxKeyEventQueue(Scheduler& scheduler, Interpreter& interp);
                void process_asap(EmuTime::param time,
                                  const Event& event);
                void clear();
                template<typename Archive>
                void serialize(Archive& ar, unsigned version);
        private:
                // Schedulable
                void executeUntil(EmuTime::param time) override;
        private:
                std::deque<Event> eventQueue;
                Interpreter& interp;
        } msxKeyEventQueue;
 
        struct KeybDebuggable final : SimpleDebuggable {
                explicit KeybDebuggable(MSXMotherBoard& motherBoard);
                [[nodiscard]] uint8_t read(unsigned address) override;
                void write(unsigned address, uint8_t value) override;
        } keybDebuggable;
 
        UnicodeKeymap unicodeKeymap;
        // Remembers the last unicode for a key-press-keycode. To be used later
        // on the corresponding key-release, because those don't have unicode info.
        std::vector<std::pair<SDL_Keycode, uint32_t>> lastUnicodeForKeycode; // sorted on SDL_keycode
 
        std::array<uint8_t, KeyMatrixPosition::NUM_ROWS> cmdKeyMatrix;
        std::array<uint8_t, KeyMatrixPosition::NUM_ROWS> typeKeyMatrix;
        std::array<uint8_t, KeyMatrixPosition::NUM_ROWS> userKeyMatrix;
        std::array<uint8_t, KeyMatrixPosition::NUM_ROWS> hostKeyMatrix;
        mutable std::array<uint8_t, KeyMatrixPosition::NUM_ROWS> keyMatrix;
 
        uint8_t msxModifiers = 0xff;
 
        const bool hasKeypad;
        const bool blockRow11;
        const bool keyGhosting;
        const bool keyGhostingSGCprotected;
        const uint8_t modifierIsLock;
        mutable bool keysChanged = false;
        uint8_t locksOn = 0;
 
        bool focus = true;
};
SERIALIZE_CLASS_VERSION(Keyboard, 4);
 
} // namespace openmsx
 
#endif