Started work on keyboard input

core/hostevents.h

@@ -38,6 +38,8 @@ public:
 enum : uint32_t {
     MOUSE_EVENT_MOTION = 1 << 0,
     MOUSE_EVENT_BUTTON = 1 << 1,
+    KEYBOARD_EVENT_DOWN = 1 << 0,
+    KEYBOARD_EVENT_UP = 1 << 1,
 };
 
 class MouseEvent {
@@ -51,6 +53,16 @@ public:
     uint8_t     buttons_state;
 };
 
+class KeyboardEvent {
+public:
+    KeyboardEvent() = default;
+    ~KeyboardEvent() = default;
+
+    uint32_t flags;
+    uint32_t key;
+    uint16_t keys_state;
+};
+
 class EventManager {
 public:
     static EventManager* get_instance() {
@@ -72,6 +84,11 @@ public:
         _mouse_signal.connect_method(inst, func);
     }
 
+    template <typename T>
+    void add_keyboard_handler(T* inst, void (T::*func)(const KeyboardEvent&)) {
+        _keyboard_signal.connect_method(inst, func);
+    }
+
     template <typename T>
     void add_post_handler(T *inst, void (T::*func)()) {
         _post_signal.connect_method(inst, func);
@@ -81,9 +98,10 @@ private:
     static EventManager* event_manager;
     EventManager() {}; // private constructor to implement a singleton
 
-    CoreSignal<const WindowEvent&>  _window_signal;
-    CoreSignal<const MouseEvent&>   _mouse_signal;
-    CoreSignal<>                    _post_signal;
+    CoreSignal<const WindowEvent&>     _window_signal;
+    CoreSignal<const MouseEvent&>      _mouse_signal;
+    CoreSignal<const KeyboardEvent&>   _keyboard_signal;
+    CoreSignal<>                       _post_signal;
 
     uint64_t    events_captured = 0;
     uint64_t    unhandled_events = 0;

devices/common/adb/adbkeyboard.cpp

@@ -0,0 +1,84 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-23 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+/** @file Apple Desktop Bus Keyboard emulation. */
+
+#include <devices/common/adb/adbkeyboard.h>
+#include <devices/deviceregistry.h>
+
+AdbKeyboard::AdbKeyboard(std::string name) : AdbDevice(name) {
+    EventManager::get_instance()->add_keyboard_handler(this, &AdbKeyboard::event_handler);
+
+    this->reset();
+}
+
+void AdbKeyboard::event_handler(const KeyboardEvent& event) {
+    if (event.flags & KEYBOARD_EVENT_DOWN) {
+    } 
+    else if (event.flags & KEYBOARD_EVENT_UP) {
+    }
+}
+
+void AdbKeyboard::reset() {
+    this->my_addr        = ADB_ADDR_KBD;
+    this->dev_handler_id = 2;    // Extended ADB keyboard
+    this->exc_event_flag = 2;
+    this->srq_flag       = 1;    // enable service requests
+}
+
+bool AdbKeyboard::get_register_0() {
+}
+
+void AdbKeyboard::set_register_2() {
+}
+
+void AdbKeyboard::set_register_3() {
+    if (this->host_obj->get_input_count() < 2)    // ensure we got enough data
+        return;
+
+    const uint8_t* in_data = this->host_obj->get_input_buf();
+
+    switch (in_data[1]) {
+    case 0:
+        this->my_addr  = in_data[0] & 0xF;
+        this->srq_flag = !!(in_data[0] & 0x20);
+        break;
+    case 1:
+    case 2:
+        this->dev_handler_id = in_data[1];
+        break;
+    case 3:    // extended keyboard protocol isn't supported yet
+        break;
+    case 0xFE:    // move to a new address if there was no collision
+        if (!this->got_collision) {
+            this->my_addr = in_data[0] & 0xF;
+        }
+        break;
+    default:
+        LOG_F(WARNING, "%s: unknown handler ID = 0x%X", this->name.c_str(), in_data[1]);
+    }
+}
+
+static const DeviceDescription AdbKeyboard_Descriptor = {
+    AdbKeyboard::create, {}, {}
+};
+
+REGISTER_DEVICE(AdbKeyboard, AdbKeyboard_Descriptor);

devices/common/adb/adbkeyboard.h

@@ -0,0 +1,58 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-23 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+/** @file Apple Desktop Bus Keyboard definitions. */
+
+#ifndef ADB_KEYBOARD_H
+#define ADB_KEYBOARD_H
+
+#include <core/hostevents.h>
+#include <devices/common/adb/adbdevice.h>
+#include <devices/common/hwcomponent.h>
+
+#include <memory>
+#include <string>
+
+class AdbKeyboard : public AdbDevice {
+public:
+    AdbKeyboard(std::string name);
+    ~AdbKeyboard() = default;
+
+    static std::unique_ptr<HWComponent> create() {
+        return std::unique_ptr<AdbKeyboard>(new AdbKeyboard("ADB-KEYBOARD"));
+    }
+
+    void reset() override;
+    void event_handler(const KeyboardEvent& event);
+
+    bool get_register_0() override;
+    void set_register_2() override;
+    void set_register_3() override;
+
+
+private:
+    int32_t x_rel         = 0;
+    int32_t y_rel         = 0;
+    uint8_t buttons_state = 0;
+    bool changed          = false;
+};
+
+#endif    // ADB_KEYBOARD_H

devices/common/viacuda.cpp

@@ -731,7 +731,7 @@ void ViaCuda::i2c_comb_transaction(
 }
 
 static const vector<string> Cuda_Subdevices = {
-    "AdbBus", "AdbMouse"
+    "AdbBus", "AdbMouse", "AdbKeyboard"
 };
 
 static const DeviceDescription ViaCuda_Descriptor = {