288 lines
7.1 KiB
Rust
288 lines
7.1 KiB
Rust
use std::path::Path;
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use std::{mem, slice};
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use std::ffi::CString;
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use libc::c_int;
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use nix::{self, fcntl, unistd, errno::Errno};
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use nix::sys::stat;
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use ffi::*;
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use {Result as Res, Device};
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use std::collections::hash_map::Values;
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#[cfg(feature = "udev")]
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use udev;
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/// Device builder.
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pub struct Builder {
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fd: c_int,
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def: uinput_user_dev,
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abs: Option<c_int>,
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}
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impl Builder {
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/// Create a builder from the specified path.
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pub fn open<P: AsRef<Path>>(path: P) -> Res<Self> {
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Ok(Builder {
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fd: try!(fcntl::open(path.as_ref(), fcntl::OFlag::O_WRONLY | fcntl::OFlag::O_NONBLOCK, stat::Mode::empty())),
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def: unsafe { mem::zeroed() },
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abs: None,
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})
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}
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#[cfg(feature = "udev")]
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/// Create a builder from the default path taken from udev.
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pub fn default() -> Res<Self> {
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let context = try!(udev::Context::new());
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let mut enumerator = try!(udev::Enumerator::new(&context));
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try!(enumerator.match_subsystem("misc"));
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try!(enumerator.match_sysname("uinput"));
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let device = try!(try!(enumerator.scan_devices())
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.next().ok_or(Error::NotFound));
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Builder::open(try!(device.devnode().ok_or(Error::NotFound)))
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}
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#[cfg(not(feature = "udev"))]
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/// Create a builder from `/dev/uinput`.
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pub fn default() -> Res<Self> {
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Builder::open("/dev/uinput")
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}
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/// Set the name.
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pub fn name<T: AsRef<str>>(mut self, value: T) -> Res<Self> {
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let string = try!(CString::new(value.as_ref()));
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let bytes = string.as_bytes_with_nul();
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if bytes.len() > UINPUT_MAX_NAME_SIZE as usize {
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try!(Err(nix::Error::from_errno(Errno::EINVAL)));
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}
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(&mut self.def.name)[..bytes.len()]
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.clone_from_slice(unsafe { mem::transmute(bytes) });
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Ok(self)
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}
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/// Set the bus type.
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pub fn bus(mut self, value: u16) -> Self {
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self.def.id.bustype = value;
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self
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}
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/// Set the vendor ID.
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pub fn vendor(mut self, value: u16) -> Self {
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self.def.id.vendor = value;
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self
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}
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/// Set the product ID.
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pub fn product(mut self, value: u16) -> Self {
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self.def.id.product = value;
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self
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}
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/// Set the version.
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pub fn version(mut self, value: u16) -> Self {
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self.def.id.version = value;
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self
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}
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pub fn event(mut self, key_codes: Values<&str, c_int>) -> Res<Self> {
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self.abs = None;
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//let test_ev_key : c_int = EV_KEY as c_int;
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unsafe {
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//try!(Errno::result(ui_set_evbit(self.fd, EV_KEY)));
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//try!(Errno::result(ui_set_keybit(self.fd, KEY_H)));
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Errno::result(ui_set_evbit(self.fd, EV_KEY as i32))?;
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//ui_set_keybit(self.fd, KEY_H as *const c_int)?;
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for key_code in key_codes {
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Errno::result(ui_set_keybit(self.fd, *key_code as i32))?;
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}
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//try!(ui_set_keybit(self.fd, &KEY_H));
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}
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Ok(self)
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}
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/*
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/// Enable the given event.
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pub fn event<T: Into<Event>>(mut self, value: T) -> Res<Self> {
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self.abs = None;
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match value.into() {
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Event::All => {
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try!(self.event(Event::Keyboard(event::Keyboard::All)))
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.event(Event::Controller(event::Controller::All))
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}
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Event::Keyboard(value) => {
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match value {
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event::Keyboard::All => {
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let mut builder = self;
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for item in event::keyboard::Key::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::keyboard::KeyPad::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::keyboard::Misc::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::keyboard::InputAssist::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::keyboard::Function::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::keyboard::Braille::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::keyboard::Numeric::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::keyboard::TouchPad::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::keyboard::Camera::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::keyboard::Attendant::iter_variants() {
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builder = try!(builder.event(item));
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}
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Ok(builder)
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}
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value => {
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unsafe {
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try!(Errno::result(ui_set_evbit(self.fd, value.kind())));
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try!(Errno::result(ui_set_keybit(self.fd, value.code())));
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}
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Ok(self)
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}
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}
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}
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Event::Controller(value) => {
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match value {
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event::Controller::All => {
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let mut builder = self;
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for item in event::controller::Misc::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::controller::Mouse::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::controller::JoyStick::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::controller::GamePad::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::controller::Digi::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::controller::Wheel::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::controller::DPad::iter_variants() {
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builder = try!(builder.event(item));
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}
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for item in event::controller::TriggerHappy::iter_variants() {
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builder = try!(builder.event(item));
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}
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Ok(builder)
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}
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value => {
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unsafe {
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try!(Errno::result(ui_set_evbit(self.fd, value.kind())));
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try!(Errno::result(ui_set_keybit(self.fd, value.code())));
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}
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Ok(self)
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}
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}
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}
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Event::Relative(value) => {
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unsafe {
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try!(Errno::result(ui_set_evbit(self.fd, value.kind())));
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try!(Errno::result(ui_set_relbit(self.fd, value.code())));
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}
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Ok(self)
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}
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Event::Absolute(value) => {
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unsafe {
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try!(Errno::result(ui_set_evbit(self.fd, value.kind())));
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try!(Errno::result(ui_set_absbit(self.fd, value.code())));
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}
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self.abs = Some(value.code());
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Ok(self)
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}
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}
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}
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*/
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/// Set the maximum value for the previously enabled absolute event.
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pub fn max(mut self, value: i32) -> Self {
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self.def.absmax[self.abs.unwrap() as usize] = value;
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self
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}
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/// Set the minimum value for the previously enabled absolute event.
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pub fn min(mut self, value: i32) -> Self {
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self.def.absmin[self.abs.unwrap() as usize] = value;
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self
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}
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/// Set the fuzz value for the previously enabled absolute event.
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pub fn fuzz(mut self, value: i32) -> Self {
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self.def.absfuzz[self.abs.unwrap() as usize] = value;
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self
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}
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/// Set the flat value for the previously enabled absolute event.
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pub fn flat(mut self, value: i32) -> Self {
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self.def.absflat[self.abs.unwrap() as usize] = value;
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self
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}
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/// Create the defined device.
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pub fn create(self) -> Res<Device> {
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unsafe {
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let ptr = &self.def as *const _ as *const u8;
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let size = mem::size_of_val(&self.def);
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try!(unistd::write(self.fd, slice::from_raw_parts(ptr, size)));
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//todo: try!(Errno::result(ui_dev_create(self.fd)));
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// try1: Errno::result(ui_dev_create(self.fd)).unwrap();
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try!(Errno::result(ui_dev_create(self.fd)));
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}
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Ok(Device::new(self.fd))
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}
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}
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