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/*
* Copyright 2023 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//! Common definitions of the Android Input Framework in rust.
use bitflags::bitflags;
use std::fmt;
/// The InputDevice ID.
#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct DeviceId(pub i32);
#[repr(u32)]
pub enum SourceClass {
None = input_bindgen::AINPUT_SOURCE_CLASS_NONE,
Button = input_bindgen::AINPUT_SOURCE_CLASS_BUTTON,
Pointer = input_bindgen::AINPUT_SOURCE_CLASS_POINTER,
Navigation = input_bindgen::AINPUT_SOURCE_CLASS_NAVIGATION,
Position = input_bindgen::AINPUT_SOURCE_CLASS_POSITION,
Joystick = input_bindgen::AINPUT_SOURCE_CLASS_JOYSTICK,
}
bitflags! {
/// Source of the input device or input events.
#[derive(Debug, PartialEq)]
pub struct Source: u32 {
// Constants from SourceClass, added here for compatibility reasons
/// SourceClass::Button
const SourceClassButton = SourceClass::Button as u32;
/// SourceClass::Pointer
const SourceClassPointer = SourceClass::Pointer as u32;
/// SourceClass::Navigation
const SourceClassNavigation = SourceClass::Navigation as u32;
/// SourceClass::Position
const SourceClassPosition = SourceClass::Position as u32;
/// SourceClass::Joystick
const SourceClassJoystick = SourceClass::Joystick as u32;
/// SOURCE_UNKNOWN
const Unknown = input_bindgen::AINPUT_SOURCE_UNKNOWN;
/// SOURCE_KEYBOARD
const Keyboard = input_bindgen::AINPUT_SOURCE_KEYBOARD;
/// SOURCE_DPAD
const Dpad = input_bindgen::AINPUT_SOURCE_DPAD;
/// SOURCE_GAMEPAD
const Gamepad = input_bindgen::AINPUT_SOURCE_GAMEPAD;
/// SOURCE_TOUCHSCREEN
const Touchscreen = input_bindgen::AINPUT_SOURCE_TOUCHSCREEN;
/// SOURCE_MOUSE
const Mouse = input_bindgen::AINPUT_SOURCE_MOUSE;
/// SOURCE_STYLUS
const Stylus = input_bindgen::AINPUT_SOURCE_STYLUS;
/// SOURCE_BLUETOOTH_STYLUS
const BluetoothStylus = input_bindgen::AINPUT_SOURCE_BLUETOOTH_STYLUS;
/// SOURCE_TRACKBALL
const Trackball = input_bindgen::AINPUT_SOURCE_TRACKBALL;
/// SOURCE_MOUSE_RELATIVE
const MouseRelative = input_bindgen::AINPUT_SOURCE_MOUSE_RELATIVE;
/// SOURCE_TOUCHPAD
const Touchpad = input_bindgen::AINPUT_SOURCE_TOUCHPAD;
/// SOURCE_TOUCH_NAVIGATION
const TouchNavigation = input_bindgen::AINPUT_SOURCE_TOUCH_NAVIGATION;
/// SOURCE_JOYSTICK
const Joystick = input_bindgen::AINPUT_SOURCE_JOYSTICK;
/// SOURCE_HDMI
const HDMI = input_bindgen::AINPUT_SOURCE_HDMI;
/// SOURCE_SENSOR
const Sensor = input_bindgen::AINPUT_SOURCE_SENSOR;
/// SOURCE_ROTARY_ENCODER
const RotaryEncoder = input_bindgen::AINPUT_SOURCE_ROTARY_ENCODER;
}
}
/// A rust enum representation of a MotionEvent action.
#[repr(u32)]
pub enum MotionAction {
/// ACTION_DOWN
Down = input_bindgen::AMOTION_EVENT_ACTION_DOWN,
/// ACTION_UP
Up = input_bindgen::AMOTION_EVENT_ACTION_UP,
/// ACTION_MOVE
Move = input_bindgen::AMOTION_EVENT_ACTION_MOVE,
/// ACTION_CANCEL
Cancel = input_bindgen::AMOTION_EVENT_ACTION_CANCEL,
/// ACTION_OUTSIDE
Outside = input_bindgen::AMOTION_EVENT_ACTION_OUTSIDE,
/// ACTION_POINTER_DOWN
PointerDown {
/// The index of the affected pointer.
action_index: usize,
} = input_bindgen::AMOTION_EVENT_ACTION_POINTER_DOWN,
/// ACTION_POINTER_UP
PointerUp {
/// The index of the affected pointer.
action_index: usize,
} = input_bindgen::AMOTION_EVENT_ACTION_POINTER_UP,
/// ACTION_HOVER_ENTER
HoverEnter = input_bindgen::AMOTION_EVENT_ACTION_HOVER_ENTER,
/// ACTION_HOVER_MOVE
HoverMove = input_bindgen::AMOTION_EVENT_ACTION_HOVER_MOVE,
/// ACTION_HOVER_EXIT
HoverExit = input_bindgen::AMOTION_EVENT_ACTION_HOVER_EXIT,
/// ACTION_SCROLL
Scroll = input_bindgen::AMOTION_EVENT_ACTION_SCROLL,
/// ACTION_BUTTON_PRESS
ButtonPress = input_bindgen::AMOTION_EVENT_ACTION_BUTTON_PRESS,
/// ACTION_BUTTON_RELEASE
ButtonRelease = input_bindgen::AMOTION_EVENT_ACTION_BUTTON_RELEASE,
}
impl fmt::Display for MotionAction {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
MotionAction::Down => write!(f, "DOWN"),
MotionAction::Up => write!(f, "UP"),
MotionAction::Move => write!(f, "MOVE"),
MotionAction::Cancel => write!(f, "CANCEL"),
MotionAction::Outside => write!(f, "OUTSIDE"),
MotionAction::PointerDown { action_index } => {
write!(f, "POINTER_DOWN({})", action_index)
}
MotionAction::PointerUp { action_index } => write!(f, "POINTER_UP({})", action_index),
MotionAction::HoverMove => write!(f, "HOVER_MOVE"),
MotionAction::Scroll => write!(f, "SCROLL"),
MotionAction::HoverEnter => write!(f, "HOVER_ENTER"),
MotionAction::HoverExit => write!(f, "HOVER_EXIT"),
MotionAction::ButtonPress => write!(f, "BUTTON_PRESS"),
MotionAction::ButtonRelease => write!(f, "BUTTON_RELEASE"),
}
}
}
impl From<u32> for MotionAction {
fn from(action: u32) -> Self {
let (action_masked, action_index) = MotionAction::breakdown_action(action);
match action_masked {
input_bindgen::AMOTION_EVENT_ACTION_DOWN => MotionAction::Down,
input_bindgen::AMOTION_EVENT_ACTION_UP => MotionAction::Up,
input_bindgen::AMOTION_EVENT_ACTION_MOVE => MotionAction::Move,
input_bindgen::AMOTION_EVENT_ACTION_CANCEL => MotionAction::Cancel,
input_bindgen::AMOTION_EVENT_ACTION_OUTSIDE => MotionAction::Outside,
input_bindgen::AMOTION_EVENT_ACTION_POINTER_DOWN => {
MotionAction::PointerDown { action_index }
}
input_bindgen::AMOTION_EVENT_ACTION_POINTER_UP => {
MotionAction::PointerUp { action_index }
}
input_bindgen::AMOTION_EVENT_ACTION_HOVER_ENTER => MotionAction::HoverEnter,
input_bindgen::AMOTION_EVENT_ACTION_HOVER_MOVE => MotionAction::HoverMove,
input_bindgen::AMOTION_EVENT_ACTION_HOVER_EXIT => MotionAction::HoverExit,
input_bindgen::AMOTION_EVENT_ACTION_SCROLL => MotionAction::Scroll,
input_bindgen::AMOTION_EVENT_ACTION_BUTTON_PRESS => MotionAction::ButtonPress,
input_bindgen::AMOTION_EVENT_ACTION_BUTTON_RELEASE => MotionAction::ButtonRelease,
_ => panic!("Unknown action: {}", action),
}
}
}
impl MotionAction {
fn breakdown_action(action: u32) -> (u32, usize) {
let action_masked = action & input_bindgen::AMOTION_EVENT_ACTION_MASK;
let index = (action & input_bindgen::AMOTION_EVENT_ACTION_POINTER_INDEX_MASK)
>> input_bindgen::AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
(action_masked, index.try_into().unwrap())
}
}
bitflags! {
/// MotionEvent flags.
#[derive(Debug)]
pub struct MotionFlags: u32 {
/// FLAG_CANCELED
const CANCELED = input_bindgen::AMOTION_EVENT_FLAG_CANCELED as u32;
/// FLAG_WINDOW_IS_OBSCURED
const WINDOW_IS_OBSCURED = input_bindgen::AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED;
/// FLAG_WINDOW_IS_PARTIALLY_OBSCURED
const WINDOW_IS_PARTIALLY_OBSCURED =
input_bindgen::AMOTION_EVENT_FLAG_WINDOW_IS_PARTIALLY_OBSCURED;
/// FLAG_IS_ACCESSIBILITY_EVENT
const IS_ACCESSIBILITY_EVENT =
input_bindgen::AMOTION_EVENT_FLAG_IS_ACCESSIBILITY_EVENT;
/// FLAG_NO_FOCUS_CHANGE
const NO_FOCUS_CHANGE = input_bindgen::AMOTION_EVENT_FLAG_NO_FOCUS_CHANGE;
}
}
impl Source {
/// Return true if this source is from the provided class
pub fn is_from_class(&self, source_class: SourceClass) -> bool {
let class_bits = source_class as u32;
self.bits() & class_bits == class_bits
}
}
#[cfg(test)]
mod tests {
use crate::input::SourceClass;
use crate::Source;
#[test]
fn convert_source_class_pointer() {
let source = Source::from_bits(input_bindgen::AINPUT_SOURCE_CLASS_POINTER).unwrap();
assert!(source.is_from_class(SourceClass::Pointer));
}
}
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