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event.rs
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event.rs
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/*!
Event Handling
*/
use std::ffi::CStr;
use std::mem;
use libc::{c_int, c_void, uint32_t};
use num::FromPrimitive;
use std::ptr;
use std::borrow::ToOwned;
use std::iter::FromIterator;
use std::marker::PhantomData;
use controller;
use controller::{Axis, Button};
use joystick;
use joystick::HatState;
use keyboard;
use keyboard::Mod;
use sys::keycode::SDL_Keymod;
use keyboard::Keycode;
use mouse;
use mouse::{Mouse, MouseState};
use keyboard::Scancode;
use get_error;
use SdlResult;
use ErrorMessage;
use sys::event as ll;
impl ::EventSubsystem {
/// Removes all events in the event queue that match the specified event type.
pub fn flush_event(&self, event_type: EventType) {
unsafe { ll::SDL_FlushEvent(event_type as uint32_t) };
}
/// Removes all events in the event queue that match the specified type range.
pub fn flush_events(&self, min_type: u32, max_type: u32) {
unsafe { ll::SDL_FlushEvents(min_type, max_type) };
}
/// Reads the events at the front of the event queue, until the maximum amount
/// of events is read.
///
/// The events will _not_ be removed from the queue.
///
/// # Example
/// ```no_run
/// use sdl2::event::Event;
///
/// let sdl_context = sdl2::init().unwrap();
/// let event_subsystem = sdl_context.event().unwrap();
///
/// // Read up to 1024 events
/// let events: Vec<Event> = event_subsystem.peek_events(1024);
///
/// // Print each one
/// for event in events {
/// println!("{:?}", event);
/// }
/// ```
pub fn peek_events<B>(&self, max_amount: u32) -> B
where B: FromIterator<Event>
{
unsafe {
let mut events = Vec::with_capacity(max_amount as usize);
let result = {
let events_ptr = events.as_mut_ptr();
ll::SDL_PeepEvents(
events_ptr,
max_amount as c_int,
ll::SDL_PEEKEVENT,
ll::SDL_FIRSTEVENT,
ll::SDL_LASTEVENT
)
};
if result < 0 {
// The only error possible is "Couldn't lock event queue"
panic!(get_error());
} else {
events.set_len(result as usize);
events.into_iter().map(|event_raw| {
Event::from_ll(event_raw)
}).collect()
}
}
}
/// Pushes an event to the event queue.
pub fn push_event(&self, event: Event) -> SdlResult<()> {
match event.to_ll() {
Some(mut raw_event) => {
let ok = unsafe { ll::SDL_PushEvent(&mut raw_event) == 1 };
if ok { Ok(()) }
else { Err(get_error()) }
},
None => {
Err(ErrorMessage("Cannot push unsupported event type to the queue".into()))
}
}
}
}
/// Types of events that can be delivered.
#[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
#[repr(u32)]
pub enum EventType {
First = ll::SDL_FIRSTEVENT,
Quit = ll::SDL_QUIT,
AppTerminating = ll::SDL_APP_TERMINATING,
AppLowMemory = ll::SDL_APP_LOWMEMORY,
AppWillEnterBackground = ll::SDL_APP_WILLENTERBACKGROUND,
AppDidEnterBackground = ll::SDL_APP_DIDENTERBACKGROUND,
AppWillEnterForeground = ll::SDL_APP_WILLENTERFOREGROUND,
AppDidEnterForeground = ll::SDL_APP_DIDENTERFOREGROUND,
Window = ll::SDL_WINDOWEVENT,
// TODO: SysWM = ll::SDL_SYSWMEVENT,
KeyDown = ll::SDL_KEYDOWN,
KeyUp = ll::SDL_KEYUP,
TextEditing = ll::SDL_TEXTEDITING,
TextInput = ll::SDL_TEXTINPUT,
MouseMotion = ll::SDL_MOUSEMOTION,
MouseButtonDown = ll::SDL_MOUSEBUTTONDOWN,
MouseButtonUp = ll::SDL_MOUSEBUTTONUP,
MouseWheel = ll::SDL_MOUSEWHEEL,
JoyAxisMotion = ll::SDL_JOYAXISMOTION,
JoyBallMotion = ll::SDL_JOYBALLMOTION,
JoyHatMotion = ll::SDL_JOYHATMOTION,
JoyButtonDown = ll::SDL_JOYBUTTONDOWN,
JoyButtonUp = ll::SDL_JOYBUTTONUP,
JoyDeviceAdded = ll::SDL_JOYDEVICEADDED,
JoyDeviceRemoved = ll::SDL_JOYDEVICEREMOVED,
ControllerAxisMotion = ll::SDL_CONTROLLERAXISMOTION,
ControllerButtonDown = ll::SDL_CONTROLLERBUTTONDOWN,
ControllerButtonUp = ll::SDL_CONTROLLERBUTTONUP,
ControllerDeviceAdded = ll::SDL_CONTROLLERDEVICEADDED,
ControllerDeviceRemoved = ll::SDL_CONTROLLERDEVICEREMOVED,
ControllerDeviceRemapped = ll::SDL_CONTROLLERDEVICEREMAPPED,
FingerDown = ll::SDL_FINGERDOWN,
FingerUp = ll::SDL_FINGERUP,
FingerMotion = ll::SDL_FINGERMOTION,
DollarGesture = ll::SDL_DOLLARGESTURE,
DollarRecord = ll::SDL_DOLLARRECORD,
MultiGesture = ll::SDL_MULTIGESTURE,
ClipboardUpdate = ll::SDL_CLIPBOARDUPDATE,
DropFile = ll::SDL_DROPFILE,
User = ll::SDL_USEREVENT,
Last = ll::SDL_LASTEVENT,
}
impl FromPrimitive for EventType {
fn from_i64(n: i64) -> Option<EventType> {
use self::EventType::*;
Some( match n as ll::SDL_EventType {
ll::SDL_FIRSTEVENT => First,
ll::SDL_QUIT => Quit,
ll::SDL_APP_TERMINATING => AppTerminating,
ll::SDL_APP_LOWMEMORY => AppLowMemory,
ll::SDL_APP_WILLENTERBACKGROUND => AppWillEnterBackground,
ll::SDL_APP_DIDENTERBACKGROUND => AppDidEnterBackground,
ll::SDL_APP_WILLENTERFOREGROUND => AppWillEnterForeground,
ll::SDL_APP_DIDENTERFOREGROUND => AppDidEnterForeground,
ll::SDL_WINDOWEVENT => Window,
ll::SDL_KEYDOWN => KeyDown,
ll::SDL_KEYUP => KeyUp,
ll::SDL_TEXTEDITING => TextEditing,
ll::SDL_TEXTINPUT => TextInput,
ll::SDL_MOUSEMOTION => MouseMotion,
ll::SDL_MOUSEBUTTONDOWN => MouseButtonDown,
ll::SDL_MOUSEBUTTONUP => MouseButtonUp,
ll::SDL_MOUSEWHEEL => MouseWheel,
ll::SDL_JOYAXISMOTION => JoyAxisMotion,
ll::SDL_JOYBALLMOTION => JoyBallMotion,
ll::SDL_JOYHATMOTION => JoyHatMotion,
ll::SDL_JOYBUTTONDOWN => JoyButtonDown,
ll::SDL_JOYBUTTONUP => JoyButtonUp,
ll::SDL_JOYDEVICEADDED => JoyDeviceAdded,
ll::SDL_JOYDEVICEREMOVED => JoyDeviceRemoved,
ll::SDL_CONTROLLERAXISMOTION => ControllerAxisMotion,
ll::SDL_CONTROLLERBUTTONDOWN => ControllerButtonDown,
ll::SDL_CONTROLLERBUTTONUP => ControllerButtonUp,
ll::SDL_CONTROLLERDEVICEADDED => ControllerDeviceAdded,
ll::SDL_CONTROLLERDEVICEREMOVED => ControllerDeviceRemoved,
ll::SDL_CONTROLLERDEVICEREMAPPED => ControllerDeviceRemapped,
ll::SDL_FINGERDOWN => FingerDown,
ll::SDL_FINGERUP => FingerUp,
ll::SDL_FINGERMOTION => FingerMotion,
ll::SDL_DOLLARGESTURE => DollarGesture,
ll::SDL_DOLLARRECORD => DollarRecord,
ll::SDL_MULTIGESTURE => MultiGesture,
ll::SDL_CLIPBOARDUPDATE => ClipboardUpdate,
ll::SDL_DROPFILE => DropFile,
ll::SDL_USEREVENT => User,
ll::SDL_LASTEVENT => Last,
_ => return None,
})
}
fn from_u64(n: u64) -> Option<EventType> { FromPrimitive::from_i64(n as i64) }
}
#[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
/// An enum of window events.
pub enum WindowEventId {
None,
Shown,
Hidden,
Exposed,
Moved,
Resized,
SizeChanged,
Minimized,
Maximized,
Restored,
Enter,
Leave,
FocusGained,
FocusLost,
Close,
}
impl WindowEventId {
fn from_ll(id: u8) -> WindowEventId {
match id {
1 => WindowEventId::Shown,
2 => WindowEventId::Hidden,
3 => WindowEventId::Exposed,
4 => WindowEventId::Moved,
5 => WindowEventId::Resized,
6 => WindowEventId::SizeChanged,
7 => WindowEventId::Minimized,
8 => WindowEventId::Maximized,
9 => WindowEventId::Restored,
10 => WindowEventId::Enter,
11 => WindowEventId::Leave,
12 => WindowEventId::FocusGained,
13 => WindowEventId::FocusLost,
14 => WindowEventId::Close,
_ => WindowEventId::None
}
}
}
#[derive(Clone, PartialEq)]
/// Different event types.
pub enum Event {
Quit { timestamp: u32 },
AppTerminating { timestamp: u32 },
AppLowMemory { timestamp: u32 },
AppWillEnterBackground { timestamp: u32 },
AppDidEnterBackground { timestamp: u32 },
AppWillEnterForeground { timestamp: u32 },
AppDidEnterForeground { timestamp: u32 },
Window {
timestamp: u32 ,
window_id: u32,
win_event_id: WindowEventId,
data1: i32,
data2: i32
},
// TODO: SysWMEvent
KeyDown {
timestamp: u32 ,
window_id: u32,
keycode: Option<Keycode>,
scancode: Option<Scancode>,
keymod: Mod,
repeat: bool
},
KeyUp {
timestamp: u32 ,
window_id: u32,
keycode: Option<Keycode>,
scancode: Option<Scancode>,
keymod: Mod,
repeat: bool
},
TextEditing {
timestamp: u32,
window_id: u32,
text: String,
start: i32,
length: i32
},
TextInput {
timestamp: u32,
window_id: u32,
text: String
},
MouseMotion {
timestamp: u32,
window_id: u32,
which: u32,
mousestate: MouseState,
x: i32,
y: i32,
xrel: i32,
yrel: i32
},
MouseButtonDown {
timestamp: u32,
window_id: u32,
which: u32,
mouse_btn: Mouse,
x: i32,
y: i32
},
MouseButtonUp {
timestamp: u32,
window_id: u32,
which: u32,
mouse_btn: Mouse,
x: i32,
y: i32
},
MouseWheel {
timestamp: u32,
window_id: u32,
which: u32,
x: i32,
y: i32
},
JoyAxisMotion {
timestamp: u32,
which: i32,
axis_idx: u8,
value: i16
},
JoyBallMotion {
timestamp: u32,
which: i32,
ball_idx: u8,
xrel: i16,
yrel: i16
},
JoyHatMotion {
timestamp: u32,
which: i32,
hat_idx: u8,
state: HatState
},
JoyButtonDown {
timestamp: u32,
which: i32,
button_idx: u8
},
JoyButtonUp {
timestamp: u32,
which: i32,
button_idx: u8
},
JoyDeviceAdded {
timestamp: u32,
which: i32
},
JoyDeviceRemoved {
timestamp: u32,
which: i32
},
ControllerAxisMotion {
timestamp: u32,
which: i32,
axis: Axis,
value: i16
},
ControllerButtonDown {
timestamp: u32,
which: i32,
button: Button
},
ControllerButtonUp {
timestamp: u32,
which: i32,
button: Button
},
ControllerDeviceAdded {
timestamp: u32,
which: i32
},
ControllerDeviceRemoved {
timestamp: u32,
which: i32
},
ControllerDeviceRemapped {
timestamp: u32,
which: i32
},
FingerDown {
timestamp: u32,
touch_id: i64,
finger_id: i64,
x: f32,
y: f32,
dx: f32,
dy: f32,
pressure: f32
},
FingerUp {
timestamp: u32,
touch_id: i64,
finger_id: i64,
x: f32,
y: f32,
dx: f32,
dy: f32,
pressure: f32
},
FingerMotion {
timestamp: u32,
touch_id: i64,
finger_id: i64,
x: f32,
y: f32,
dx: f32,
dy: f32,
pressure: f32
},
DollarGesture {
timestamp: u32,
touch_id: i64,
gesture_id: i64,
num_fingers: u32,
error: f32,
x: f32,
y: f32
},
DollarRecord {
timestamp: u32,
touch_id: i64,
gesture_id: i64,
num_fingers: u32,
error: f32,
x: f32,
y: f32
},
MultiGesture {
timestamp: u32,
touch_id: i64,
d_theta: f32,
d_dist: f32,
x: f32,
y: f32,
num_fingers: u16
},
ClipboardUpdate {
timestamp: u32
},
DropFile {
timestamp: u32,
filename: String
},
User {
timestamp: u32,
window_id: u32,
type_: u32,
code: i32
},
Unknown {
timestamp: u32,
type_: u32
}
}
impl ::std::fmt::Debug for Event {
fn fmt(&self, out: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
out.write_str(match *self {
Event::Quit{..} => "Event::Quit",
Event::AppTerminating{..} => "Event::AppTerminating",
Event::AppLowMemory{..} => "Event::AppLowMemory",
Event::AppWillEnterBackground{..} => "Event::AppWillEnterBackground",
Event::AppDidEnterBackground{..} => "Event::AppDidEnterBackground",
Event::AppWillEnterForeground{..} => "Event::AppWillEnterForeground",
Event::AppDidEnterForeground{..} => "Event::AppDidEnterForeground",
Event::Window{..} => "Event::Window",
Event::KeyDown{..} => "Event::KeyDown",
Event::KeyUp{..} => "Event::KeyUp",
Event::TextEditing{..} => "Event::TextEditing",
Event::TextInput{..} => "Event::TextInput",
Event::MouseMotion{..} => "Event::MouseMotion",
Event::MouseButtonDown{..} => "Event::MouseButtonDown",
Event::MouseButtonUp{..} => "Event::MouseButtonUp",
Event::MouseWheel{..} => "Event::MouseWheel",
Event::JoyAxisMotion{..} => "Event::JoyAxisMotion",
Event::JoyBallMotion{..} => "Event::JoyBallMotion",
Event::JoyHatMotion{..} => "Event::JoyHatMotion",
Event::JoyButtonDown{..} => "Event::JoyButtonDown",
Event::JoyButtonUp{..} => "Event::JoyButtonUp",
Event::JoyDeviceAdded{..} => "Event::JoyDeviceAdded",
Event::JoyDeviceRemoved{..} => "Event::JoyDeviceRemoved",
Event::ControllerAxisMotion{..} => "Event::ControllerAxisMotion",
Event::ControllerButtonDown{..} => "Event::ControllerButtonDown",
Event::ControllerButtonUp{..} => "Event::ControllerButtonUp",
Event::ControllerDeviceAdded{..} => "Event::ControllerDeviceAdded",
Event::ControllerDeviceRemoved{..} => "Event::ControllerDeviceRemoved",
Event::ControllerDeviceRemapped{..} => "Event::ControllerDeviceRemapped",
Event::FingerDown{..} => "Event::FingerDown",
Event::FingerUp{..} => "Event::FingerUp",
Event::FingerMotion{..} => "Event::FingerMotion",
Event::DollarGesture{..} => "Event::DollarGesture",
Event::DollarRecord{..} => "Event::DollarRecord",
Event::MultiGesture{..} => "Event::MultiGesture",
Event::ClipboardUpdate{..} => "Event::ClipboardUpdate",
Event::DropFile{..} => "Event::DropFile",
Event::User{..} => "Event::User",
Event::Unknown{..} => "Event::Unknown",
})
}
}
// TODO: Remove this when from_utf8 is updated in Rust
impl Event {
fn to_ll(self) -> Option<ll::SDL_Event> {
let mut ret = unsafe { mem::uninitialized() };
match self {
// just ignore timestamp
Event::User { window_id, type_, code, .. } => {
let event = ll::SDL_UserEvent {
type_: type_ as uint32_t,
timestamp: 0,
windowID: window_id,
code: code as i32,
data1: ptr::null_mut(),
data2: ptr::null_mut(),
};
unsafe {
ptr::copy(&event, &mut ret as *mut ll::SDL_Event as *mut ll::SDL_UserEvent, 1);
}
Some(ret)
},
_ => {
// don't know how to convert!
None
}
}
}
fn from_ll(mut raw: ll::SDL_Event) -> Event {
let raw_type = raw.type_();
let raw_type = if raw_type.is_null() {
panic!("Event payload is null")
} else {
unsafe { *raw_type }
};
// if event type has not been defined, treat it as a UserEvent
let event_type: EventType = FromPrimitive::from_usize(raw_type as usize).unwrap_or(EventType::User);
unsafe { match event_type {
EventType::Quit => {
let ref event = *raw.quit();
Event::Quit { timestamp: event.timestamp }
}
EventType::AppTerminating => {
let ref event = *raw.common();
Event::AppTerminating { timestamp: event.timestamp }
}
EventType::AppLowMemory => {
let ref event = *raw.common();
Event::AppLowMemory { timestamp: event.timestamp }
}
EventType::AppWillEnterBackground => {
let ref event = *raw.common();
Event::AppWillEnterBackground { timestamp: event.timestamp }
}
EventType::AppDidEnterBackground => {
let ref event = *raw.common();
Event::AppDidEnterBackground { timestamp: event.timestamp }
}
EventType::AppWillEnterForeground => {
let ref event = *raw.common();
Event::AppWillEnterForeground { timestamp: event.timestamp }
}
EventType::AppDidEnterForeground => {
let ref event = *raw.common();
Event::AppDidEnterForeground { timestamp: event.timestamp }
}
EventType::Window => {
let ref event = *raw.window();
Event::Window {
timestamp: event.timestamp,
window_id: event.windowID,
win_event_id: WindowEventId::from_ll(event.event),
data1: event.data1,
data2: event.data2
}
}
// TODO: SysWMEventType
EventType::KeyDown => {
let ref event = *raw.key();
Event::KeyDown {
timestamp: event.timestamp,
window_id: event.windowID,
keycode: FromPrimitive::from_i32(event.keysym.sym),
scancode: FromPrimitive::from_u32(event.keysym.scancode),
keymod: keyboard::Mod::from_bits(event.keysym._mod as SDL_Keymod).unwrap(),
repeat: event.repeat != 0
}
}
EventType::KeyUp => {
let ref event = *raw.key();
Event::KeyUp {
timestamp: event.timestamp,
window_id: event.windowID,
keycode: FromPrimitive::from_i32(event.keysym.sym),
scancode: FromPrimitive::from_u32(event.keysym.scancode),
keymod: keyboard::Mod::from_bits(event.keysym._mod as SDL_Keymod).unwrap(),
repeat: event.repeat != 0
}
}
EventType::TextEditing => {
let ref event = *raw.edit();
let text = String::from_utf8_lossy(
&event.text.iter()
.take_while(|&b| (*b) != 0i8)
.map(|&b| b as u8)
.collect::<Vec<u8>>()
).to_owned().into_owned();
Event::TextEditing {
timestamp: event.timestamp,
window_id: event.windowID,
text: text,
start: event.start,
length: event.length
}
}
EventType::TextInput => {
let ref event = *raw.text();
let text = String::from_utf8_lossy(
&event.text.iter()
.take_while(|&b| (*b) != 0i8)
.map(|&b| b as u8)
.collect::<Vec<u8>>()
).to_owned().into_owned();
Event::TextInput {
timestamp: event.timestamp,
window_id: event.windowID,
text: text
}
}
EventType::MouseMotion => {
let ref event = *raw.motion();
Event::MouseMotion {
timestamp: event.timestamp,
window_id: event.windowID,
which: event.which,
mousestate: mouse::MouseState::from_flags(event.state),
x: event.x,
y: event.y,
xrel: event.xrel,
yrel: event.yrel
}
}
EventType::MouseButtonDown => {
let ref event = *raw.button();
Event::MouseButtonDown {
timestamp: event.timestamp,
window_id: event.windowID,
which: event.which,
mouse_btn: mouse::Mouse::from_ll(event.button),
x: event.x,
y: event.y
}
}
EventType::MouseButtonUp => {
let ref event = *raw.button();
Event::MouseButtonUp {
timestamp: event.timestamp,
window_id: event.windowID,
which: event.which,
mouse_btn: mouse::Mouse::from_ll(event.button),
x: event.x,
y: event.y
}
}
EventType::MouseWheel => {
let ref event = *raw.wheel();
Event::MouseWheel {
timestamp: event.timestamp,
window_id: event.windowID,
which: event.which,
x: event.x,
y: event.y
}
}
EventType::JoyAxisMotion => {
let ref event = *raw.jaxis();
Event::JoyAxisMotion {
timestamp: event.timestamp,
which: event.which,
axis_idx: event.axis,
value: event.value
}
}
EventType::JoyBallMotion => {
let ref event = *raw.jball();
Event::JoyBallMotion {
timestamp: event.timestamp,
which: event.which,
ball_idx: event.ball,
xrel: event.xrel,
yrel: event.yrel
}
}
EventType::JoyHatMotion => {
let ref event = *raw.jhat();
Event::JoyHatMotion {
timestamp: event.timestamp,
which: event.which,
hat_idx: event.hat,
state: joystick::HatState::from_raw(event.value),
}
}
EventType::JoyButtonDown => {
let ref event = *raw.jbutton();
Event::JoyButtonDown {
timestamp: event.timestamp,
which: event.which,
button_idx: event.button
}
}
EventType::JoyButtonUp => {
let ref event = *raw.jbutton();
Event::JoyButtonUp {
timestamp: event.timestamp,
which: event.which,
button_idx: event.button
}
}
EventType::JoyDeviceAdded => {
let ref event = *raw.jdevice();
Event::JoyDeviceAdded {
timestamp: event.timestamp,
which: event.which
}
}
EventType::JoyDeviceRemoved => {
let ref event = *raw.jdevice();
Event::JoyDeviceRemoved {
timestamp: event.timestamp,
which: event.which
}
}
EventType::ControllerAxisMotion => {
let ref event = *raw.caxis();
let axis = controller::Axis::from_ll(event.axis as ::sys::controller::SDL_GameControllerAxis).unwrap();
Event::ControllerAxisMotion {
timestamp: event.timestamp,
which: event.which,
axis: axis,
value: event.value
}
}
EventType::ControllerButtonDown => {
let ref event = *raw.cbutton();
let button = controller::Button::from_ll(event.button as ::sys::controller::SDL_GameControllerButton).unwrap();
Event::ControllerButtonDown {
timestamp: event.timestamp,
which: event.which,
button: button
}
}
EventType::ControllerButtonUp => {
let ref event = *raw.cbutton();
let button = controller::Button::from_ll(event.button as ::sys::controller::SDL_GameControllerButton).unwrap();
Event::ControllerButtonUp {
timestamp: event.timestamp,
which: event.which,
button: button
}
}
EventType::ControllerDeviceAdded => {
let ref event = *raw.cdevice();
Event::ControllerDeviceAdded {
timestamp: event.timestamp,
which: event.which
}
}
EventType::ControllerDeviceRemoved => {
let ref event = *raw.cdevice();
Event::ControllerDeviceRemoved {
timestamp: event.timestamp,
which: event.which
}
}
EventType::ControllerDeviceRemapped => {
let ref event = *raw.cdevice();
Event::ControllerDeviceRemapped {
timestamp: event.timestamp,
which: event.which
}
}
EventType::FingerDown => {
let ref event = *raw.tfinger();
Event::FingerDown {
timestamp: event.timestamp,
touch_id: event.touchId,
finger_id: event.fingerId,
x: event.x,
y: event.y,
dx: event.dx,
dy: event.dy,
pressure: event.pressure
}
}
EventType::FingerUp => {
let ref event = *raw.tfinger();
Event::FingerUp {
timestamp: event.timestamp,
touch_id: event.touchId,
finger_id: event.fingerId,
x: event.x,
y: event.y,
dx: event.dx,
dy: event.dy,
pressure: event.pressure
}
}
EventType::FingerMotion => {
let ref event = *raw.tfinger();
Event::FingerMotion {
timestamp: event.timestamp,
touch_id: event.touchId,
finger_id: event.fingerId,
x: event.x,
y: event.y,
dx: event.dx,
dy: event.dy,
pressure: event.pressure
}
}
EventType::DollarGesture => {
let ref event = *raw.dgesture();
Event::DollarGesture {
timestamp: event.timestamp,
touch_id: event.touchId,
gesture_id: event.gestureId,
num_fingers: event.numFingers,
error: event.error,
x: event.x,
y: event.y
}
}
EventType::DollarRecord => {
let ref event = *raw.dgesture();
Event::DollarRecord {
timestamp: event.timestamp,
touch_id: event.touchId,
gesture_id: event.gestureId,
num_fingers: event.numFingers,
error: event.error,
x: event.x,
y: event.y
}
}
EventType::MultiGesture => {
let ref event = *raw.mgesture();
Event::MultiGesture {
timestamp: event.timestamp,
touch_id: event.touchId,
d_theta: event.dTheta,
d_dist: event.dDist,
x: event.x,
y: event.y,
num_fingers: event.numFingers
}
}
EventType::ClipboardUpdate => {
let ref event = *raw.common();
Event::ClipboardUpdate {
timestamp: event.timestamp
}
}
EventType::DropFile => {
let ref event = *raw.drop();
let buf = CStr::from_ptr(event.file).to_bytes();
let text = String::from_utf8_lossy(buf).to_string();
ll::SDL_free(event.file as *mut c_void);
Event::DropFile {
timestamp: event.timestamp,
filename: text
}
}
EventType::First => panic!("Unused event, EventType::First, was encountered"),
EventType::Last => panic!("Unusable event, EventType::Last, was encountered"),
// If we have no other match and the event type is >= 32768
// this is a user event
EventType::User => {
if raw_type < 32768 {
// The type is unknown to us.
// It's a newer SDL2 type.
let ref event = *raw.common();
Event::Unknown {
timestamp: event.timestamp,
type_: event.type_
}
} else {
let ref event = *raw.user();
Event::User {
timestamp: event.timestamp,
window_id: event.windowID,
type_: raw_type,
code: event.code
}
}
}
}} // close unsafe & match
}
}
unsafe fn poll_event() -> Option<Event> {
let mut raw = mem::uninitialized();
let has_pending = ll::SDL_PollEvent(&mut raw) == 1;
if has_pending { Some(Event::from_ll(raw)) }
else { None }
}
unsafe fn wait_event() -> Event {
let mut raw = mem::uninitialized();
let success = ll::SDL_WaitEvent(&mut raw) == 1;
if success { Event::from_ll(raw) }
else { panic!(get_error()) }
}
unsafe fn wait_event_timeout(timeout: u32) -> Option<Event> {
let mut raw = mem::uninitialized();
let success = ll::SDL_WaitEventTimeout(&mut raw, timeout as c_int) == 1;
if success { Some(Event::from_ll(raw)) }