mouse.cpp

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#include <drivers/peripherals/mouse.h>
 
using namespace MaxOS;
using namespace MaxOS::common;
using namespace MaxOS::drivers;
using namespace MaxOS::drivers::peripherals;
using namespace MaxOS::hardwarecommunication;
 
MouseEventHandler::MouseEventHandler() = default;
 
Event<MouseEvents>* MouseEventHandler::on_event(Event<MouseEvents>* event) {
    switch(event->type) {
 
        case MouseEvents::MOVE:
            this->on_mouse_move_event(((MouseMoveEvent*) event)->x,
                                      ((MouseMoveEvent*) event)->y);
            break;
 
        case MouseEvents::DOWN:
            this->on_mouse_down_event(((MouseDownEvent*) event)->button);
            break;
 
        case MouseEvents::UP:
            this->on_mouse_up_event(((MouseUpEvent*) event)->button);
            break;
 
    }
 
    return event;
}
 
void MouseEventHandler::on_mouse_down_event(uint8_t) {
 
}
 
void MouseEventHandler::on_mouse_up_event(uint8_t) {
 
}
 
void MouseEventHandler::on_mouse_move_event(int8_t, int8_t) {
 
}
 
MouseEventHandler::~MouseEventHandler() = default;
 
MouseDriver::MouseDriver()
        : InterruptHandler(0x2C, 0xC, 0x28),
        data_port(0x60),
        command_port(0x64) {
 
}
 
MouseDriver::~MouseDriver() = default;
 
void MouseDriver::activate() {
 
    //  Get the current state of the mouse
    command_port.write(0x20);
    uint8_t status = (data_port.read() | 2);
 
    // Write the new state
    command_port.write(0x60);
    data_port.write(status);
 
    // Tell the PIC to start listening to the mouse
    command_port.write(0xAB);
 
    // Activate the mouse
    command_port.write(0xD4);
    data_port.write(0xF4);
    data_port.read();
}
 
void MouseDriver::handle_interrupt() {
 
    // Check if there is data to handle
    uint8_t status = command_port.read();
    if(!(status & 0x20))
        return;
 
    // Read the data
    m_buffer[m_offset] = data_port.read();
    m_offset = (m_offset + 1) % 3;
 
    // If the mouse data transmission is incomplete (3rd piece of data isn't through)
    if(m_offset != 0)
        return;
 
    // If the mouse is moved (y-axis is inverted)
    if(m_buffer[1] != 0 || m_buffer[2] != 0)
        raise_event(new MouseMoveEvent(m_buffer[1], -m_buffer[2]));
 
    // Handle button presses
    for(int i = 0; i < 3; ++i) {
 
        // This button is still in the same state
        if((m_buffer[0] & (0x1 << i)) == (m_buttons & (0x1 << i)))
            continue;
 
        // Pass to handlers
        bool is_pressed = (m_buttons & (0x1 << i)) != 0;
        if(is_pressed)
            raise_event(new MouseDownEvent(m_buffer[i]));
        else
            raise_event(new MouseUpEvent(m_buffer[i]));
    }
 
    m_buttons = m_buffer[0];
}
 
string MouseDriver::device_name() {
    return "Mouse";
}
 
MouseUpEvent::MouseUpEvent(uint8_t button)
        : Event<MouseEvents>(MouseEvents::UP),
        button(button) {
 
}
 
MouseUpEvent::~MouseUpEvent() = default;
 
MouseDownEvent::MouseDownEvent(uint8_t button)
        : Event<MouseEvents>(MouseEvents::DOWN),
        button(button) {
}
 
MouseDownEvent::~MouseDownEvent() = default;
 
MouseMoveEvent::MouseMoveEvent(int8_t x, int8_t y)
        : Event<MouseEvents>(MouseEvents::MOVE),
        x(x),
        y(y) {
}
 
MouseMoveEvent::~MouseMoveEvent() = default;