136 lines
4.9 KiB
Zig
136 lines
4.9 KiB
Zig
const std = @import("std");
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const uefi = std.os.uefi;
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const Event = uefi.Event;
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const Guid = uefi.Guid;
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const Status = uefi.Status;
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const cc = uefi.cc;
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const Error = Status.Error;
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/// Character input devices, e.g. Keyboard
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pub const SimpleTextInputEx = extern struct {
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_reset: *const fn (*SimpleTextInputEx, bool) callconv(cc) Status,
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_read_key_stroke_ex: *const fn (*SimpleTextInputEx, *Key) callconv(cc) Status,
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wait_for_key_ex: Event,
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_set_state: *const fn (*SimpleTextInputEx, *const u8) callconv(cc) Status,
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_register_key_notify: *const fn (*SimpleTextInputEx, *const Key, *const fn (*const Key) callconv(cc) Status, **anyopaque) callconv(cc) Status,
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_unregister_key_notify: *const fn (*SimpleTextInputEx, *const anyopaque) callconv(cc) Status,
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pub const ResetError = uefi.UnexpectedError || error{DeviceError};
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pub const ReadKeyStrokeError = uefi.UnexpectedError || error{
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NotReady,
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DeviceError,
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Unsupported,
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};
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pub const SetStateError = uefi.UnexpectedError || error{
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DeviceError,
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Unsupported,
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};
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pub const RegisterKeyNotifyError = uefi.UnexpectedError || error{OutOfResources};
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pub const UnregisterKeyNotifyError = uefi.UnexpectedError || error{InvalidParameter};
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/// Resets the input device hardware.
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pub fn reset(self: *SimpleTextInputEx, verify: bool) ResetError!void {
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switch (self._reset(self, verify)) {
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.success => {},
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.device_error => return Error.DeviceError,
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else => |status| return uefi.unexpectedStatus(status),
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}
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}
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/// Reads the next keystroke from the input device.
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pub fn readKeyStroke(self: *SimpleTextInputEx) ReadKeyStrokeError!Key {
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var key: Key = undefined;
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switch (self._read_key_stroke_ex(self, &key)) {
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.success => return key,
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.not_ready => return Error.NotReady,
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.device_error => return Error.DeviceError,
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.unsupported => return Error.Unsupported,
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else => |status| return uefi.unexpectedStatus(status),
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}
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}
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/// Set certain state for the input device.
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pub fn setState(self: *SimpleTextInputEx, state: *const Key.State.Toggle) SetStateError!void {
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switch (self._set_state(self, @ptrCast(state))) {
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.success => {},
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.device_error => return Error.DeviceError,
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.unsupported => return Error.Unsupported,
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else => |status| return uefi.unexpectedStatus(status),
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}
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}
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/// Register a notification function for a particular keystroke for the input device.
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pub fn registerKeyNotify(
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self: *SimpleTextInputEx,
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key_data: *const Key,
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notify: *const fn (*const Key) callconv(cc) Status,
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) RegisterKeyNotifyError!uefi.Handle {
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var handle: uefi.Handle = undefined;
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switch (self._register_key_notify(self, key_data, notify, &handle)) {
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.success => return handle,
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.out_of_resources => return Error.OutOfResources,
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else => |status| return uefi.unexpectedStatus(status),
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}
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}
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/// Remove the notification that was previously registered.
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pub fn unregisterKeyNotify(
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self: *SimpleTextInputEx,
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handle: uefi.Handle,
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) UnregisterKeyNotifyError!void {
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switch (self._unregister_key_notify(self, handle)) {
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.success => {},
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.invalid_parameter => return Error.InvalidParameter,
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else => |status| return uefi.unexpectedStatus(status),
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}
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}
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pub const guid align(8) = Guid{
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.time_low = 0xdd9e7534,
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.time_mid = 0x7762,
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.time_high_and_version = 0x4698,
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.clock_seq_high_and_reserved = 0x8c,
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.clock_seq_low = 0x14,
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.node = [_]u8{ 0xf5, 0x85, 0x17, 0xa6, 0x25, 0xaa },
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};
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pub const Key = extern struct {
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input: Input,
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state: State,
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pub const State = extern struct {
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shift: Shift,
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toggle: Toggle,
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pub const Shift = packed struct(u32) {
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right_shift_pressed: bool,
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left_shift_pressed: bool,
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right_control_pressed: bool,
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left_control_pressed: bool,
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right_alt_pressed: bool,
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left_alt_pressed: bool,
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right_logo_pressed: bool,
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left_logo_pressed: bool,
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menu_key_pressed: bool,
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sys_req_pressed: bool,
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_pad: u21 = 0,
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shift_state_valid: bool,
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};
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pub const Toggle = packed struct(u8) {
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scroll_lock_active: bool,
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num_lock_active: bool,
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caps_lock_active: bool,
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_pad: u3 = 0,
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key_state_exposed: bool,
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toggle_state_valid: bool,
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};
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};
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pub const Input = extern struct {
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scan_code: u16,
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unicode_char: u16,
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};
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};
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};
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