ndk-odin/input.odin

//+build android
package android

foreign import android "system:android"

/**
 * Key states (may be returned by queries about the current state of a
 * particular key code, scan code or switch).
 */
KeyState :: enum {
    /** The key state is unknown or the requested key itself is not supported. */
    UNKNOWN = -1,

    /** The key is up. */
    UP = 0,

    /** The key is down. */
    DOWN = 1,

    /** The key is down but is a virtual key press that is being emulated by the system. */
    VIRTUAL = 2
}

/**
 * Meta key / modifier state.
 */
MetaKeyStateBits :: enum i32 {
    ALT_ON = 1,
    ALT_LEFT_ON = 4,
    ALT_RIGHT_ON = 5,

    SHIFT_ON = 0,
    SHIFT_LEFT_ON = 6,
    SHIFT_RIGHT_ON = 7,

    SYM_ON = 2,
    FUNCTION_ON = 3,

    CTRL_ON = 12,
    CTRL_LEFT_ON = 13,
    CTRL_RIGHT_ON = 14,

    META_ON = 16,
    META_LEFT_ON = 17,
    META_RIGHT_ON = 18,

    CAPS_LOCK_ON = 20,
    NUM_LOCK_ON = 21,
    SCROLL_LOCK_ON = 22,
}

MetaKeyState :: bit_set[MetaKeyStateBits; i32]

/**
 * Input event types.
 */
InputEventType :: enum i32 {
    /** Indicates that the input event is a key event. */
    KEY = 1,

    /** Indicates that the input event is a motion event. */
    MOTION = 2,

    /** Focus event */
    FOCUS = 3,

    /** Capture event */
    CAPTURE = 4,

    /** Drag event */
    DRAG = 5,

    /** TouchMode event */
    TOUCH_MODE = 6,
}

/**
 * Key event actions.
 */
KeyEventAction :: enum i32 {
    /** The key has been pressed down. */
    DOWN = 0,

    /** The key has been released. */
    UP = 1,

    /**
     * Multiple duplicate key events have occurred in a row, or a
     * complex string is being delivered.  The repeat_count property
     * of the key event contains the number of times the given key
     * code should be executed.
     */
    MULTIPLE = 2
}

/**
 * Key event flags.
 */
KeyEventFlagsBits :: enum {
    /** This mask is set if the device woke because of this key event. */
    WOKE_HERE = 0,

    /** This mask is set if the key event was generated by a software keyboard. */
    SOFT_KEYBOARD = 1,

    /** This mask is set if we don't want the key event to cause us to leave touch mode. */
    KEEP_TOUCH_MODE = 2,

    /**
     * This mask is set if an event was known to come from a trusted
     * part of the system.  That is, the event is known to come from
     * the user, and could not have been spoofed by a third party
     * component.
     */
    FROM_SYSTEM = 3,

    /**
     * This mask is used for compatibility, to identify enter keys that are
     * coming from an IME whose enter key has been auto-labelled "next" or
     * "done".  This allows TextView to dispatch these as normal enter keys
     * for old applications, but still do the appropriate action when
     * receiving them.
     */
    EDITOR_ACTION = 4,

    /**
     * When associated with up key events, this indicates that the key press
     * has been canceled.  Typically this is used with virtual touch screen
     * keys, where the user can slide from the virtual key area on to the
     * display: in that case, the application will receive a canceled up
     * event and should not perform the action normally associated with the
     * key.  Note that for this to work, the application can not perform an
     * action for a key until it receives an up or the long press timeout has
     * expired.
     */
    CANCELED = 5,

    /**
     * This key event was generated by a virtual (on-screen) hard key area.
     * Typically this is an area of the touchscreen, outside of the regular
     * display, dedicated to "hardware" buttons.
     */
    VIRTUAL_HARD_KEY = 6,

    /**
     * This flag is set for the first key repeat that occurs after the
     * long press timeout.
     */
    LONG_PRESS = 7,

    /**
     * Set when a key event has #AKEY_EVENT_FLAG_CANCELED set because a long
     * press action was executed while it was down.
     */
    CANCELED_LONG_PRESS = 8,

    /**
     * Set for #AKEY_EVENT_ACTION_UP when this event's key code is still being
     * tracked from its initial down.  That is, somebody requested that tracking
     * started on the key down and a long press has not caused
     * the tracking to be canceled.
     */
    FLAG_TRACKING = 9,

    /**
     * Set when a key event has been synthesized to implement default behavior
     * for an event that the application did not handle.
     * Fallback key events are generated by unhandled trackball motions
     * (to emulate a directional keypad) and by certain unhandled key presses
     * that are declared in the key map (such as special function numeric keypad
     * keys when numlock is off).
     */
    FLAG_FALLBACK = 10,
}

KeyEventFlags :: bit_set[KeyEventFlagsBits]

/**
 * Bit shift for the action bits holding the pointer index as
 * defined by #AMOTION_EVENT_ACTION_POINTER_INDEX_MASK.
 */
AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT :: 8

MotionEventAction :: enum i32 {
    /** Bit mask of the parts of the action code that are the action itself. */
    MASK = 0xff,

    /**
     * Bits in the action code that represent a pointer index, used with
     * #AMOTION_EVENT_ACTION_POINTER_DOWN and AMOTION_EVENT_ACTION_POINTER_UP.  Shifting
     * down by #AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT provides the actual pointer
     * index where the data for the pointer going up or down can be found.
     */
    INDEX_MASK  = 0xff00,

    /** A pressed gesture has started, the motion contains the initial starting location. */
    DOWN = 0,

    /**
     * A pressed gesture has finished, the motion contains the final release location
     * as well as any intermediate points since the last down or move event.
     */
    UP = 1,

    /**
     * A change has happened during a press gesture (between #AMOTION_EVENT_ACTION_DOWN and
     * #AMOTION_EVENT_ACTION_UP).  The motion contains the most recent point, as well as
     * any intermediate points since the last down or move event.
     */
    MOVE = 2,

    /**
     * The current gesture has been aborted.
     * You will not receive any more points in it.  You should treat this as
     * an up event, but not perform any action that you normally would.
     */
    CANCEL = 3,

    /**
     * A movement has happened outside of the normal bounds of the UI element.
     * This does not provide a full gesture, but only the initial location of the movement/touch.
     */
    OUTSIDE = 4,

    /**
     * A non-primary pointer has gone down.
     * The bits in #AMOTION_EVENT_ACTION_POINTER_INDEX_MASK indicate which pointer changed.
     */
    POINTER_DOWN = 5,

    /**
     * A non-primary pointer has gone up.
     * The bits in #AMOTION_EVENT_ACTION_POINTER_INDEX_MASK indicate which pointer changed.
     */
    POINTER_UP = 6,

    /**
     * A change happened but the pointer is not down (unlike #AMOTION_EVENT_ACTION_MOVE).
     * The motion contains the most recent point, as well as any intermediate points since
     * the last hover move event.
     */
    HOVER_MOVE = 7,

    /**
     * The motion event contains relative vertical and/or horizontal scroll offsets.
     * Use {@link AMotionEvent_getAxisValue} to retrieve the information from
     * #AMOTION_EVENT_AXIS_VSCROLL and #AMOTION_EVENT_AXIS_HSCROLL.
     * The pointer may or may not be down when this event is dispatched.
     * This action is always delivered to the winder under the pointer, which
     * may not be the window currently touched.
     */
    SCROLL = 8,

    /** The pointer is not down but has entered the boundaries of a window or view. */
    HOVER_ENTER = 9,

    /** The pointer is not down but has exited the boundaries of a window or view. */
    HOVER_EXIT = 10,

    /* One or more buttons have been pressed. */
    BUTTON_PRESS = 11,

    /* One or more buttons have been released. */
    BUTTON_RELEASE = 12,
}

/**
 * Motion event flags.
 */
MotionEventFlagsBits :: enum i32 {
    /**
     * This flag indicates that the window that received this motion event is partly
     * or wholly obscured by another visible window above it.  This flag is set to true
     * even if the event did not directly pass through the obscured area.
     * A security sensitive application can check this flag to identify situations in which
     * a malicious application may have covered up part of its content for the purpose
     * of misleading the user or hijacking touches.  An appropriate response might be
     * to drop the suspect touches or to take additional precautions to confirm the user's
     * actual intent.
     */
    WINDOW_IS_OBSCURED = 0,
}

MotionEventFlags :: bit_set[MotionEventFlagsBits; i32]

/**
 * Motion event edge touch flags.
 */
MotionEventEdgeFlagsBits :: enum i32 {
    /** Flag indicating the motion event intersected the top edge of the screen. */
    TOP = 0,
    /** Flag indicating the motion event intersected the bottom edge of the screen. */
    BOTTOM = 1,
    /** Flag indicating the motion event intersected the left edge of the screen. */
    LEFT = 2,
    /** Flag indicating the motion event intersected the right edge of the screen. */
    RIGHT = 3,
}

MotionEventEdgeFlags :: bit_set[MotionEventEdgeFlagsBits; i32]

/**
 * Constants that identify each individual axis of a motion event.
 * @anchor AMOTION_EVENT_AXIS
 */
MotionEventAxis :: enum i32 {
    /**
     * Axis constant: X axis of a motion event.
     *
     * - For a touch screen, reports the absolute X screen position of the center of
     * the touch contact area.  The units are display pixels.
     * - For a touch pad, reports the absolute X surface position of the center of the touch
     * contact area. The units are device-dependent.
     * - For a mouse, reports the absolute X screen position of the mouse pointer.
     * The units are display pixels.
     * - For a trackball, reports the relative horizontal displacement of the trackball.
     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
     * - For a joystick, reports the absolute X position of the joystick.
     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
     */
    X = 0,
    /**
     * Axis constant: Y axis of a motion event.
     *
     * - For a touch screen, reports the absolute Y screen position of the center of
     * the touch contact area.  The units are display pixels.
     * - For a touch pad, reports the absolute Y surface position of the center of the touch
     * contact area. The units are device-dependent.
     * - For a mouse, reports the absolute Y screen position of the mouse pointer.
     * The units are display pixels.
     * - For a trackball, reports the relative vertical displacement of the trackball.
     * The value is normalized to a range from -1.0 (up) to 1.0 (down).
     * - For a joystick, reports the absolute Y position of the joystick.
     * The value is normalized to a range from -1.0 (up or far) to 1.0 (down or near).
     */
    Y = 1,
    /**
     * Axis constant: Pressure axis of a motion event.
     *
     * - For a touch screen or touch pad, reports the approximate pressure applied to the surface
     * by a finger or other tool.  The value is normalized to a range from
     * 0 (no pressure at all) to 1 (normal pressure), although values higher than 1
     * may be generated depending on the calibration of the input device.
     * - For a trackball, the value is set to 1 if the trackball button is pressed
     * or 0 otherwise.
     * - For a mouse, the value is set to 1 if the primary mouse button is pressed
     * or 0 otherwise.
     */
    PRESSURE = 2,
    /**
     * Axis constant: Size axis of a motion event.
     *
     * - For a touch screen or touch pad, reports the approximate size of the contact area in
     * relation to the maximum detectable size for the device.  The value is normalized
     * to a range from 0 (smallest detectable size) to 1 (largest detectable size),
     * although it is not a linear scale. This value is of limited use.
     * To obtain calibrated size information, see
     * {@link AMOTION_EVENT_AXIS_TOUCH_MAJOR} or {@link AMOTION_EVENT_AXIS_TOOL_MAJOR}.
     */
    SIZE = 3,
    /**
     * Axis constant: TouchMajor axis of a motion event.
     *
     * - For a touch screen, reports the length of the major axis of an ellipse that
     * represents the touch area at the point of contact.
     * The units are display pixels.
     * - For a touch pad, reports the length of the major axis of an ellipse that
     * represents the touch area at the point of contact.
     * The units are device-dependent.
     */
    TOUCH_MAJOR = 4,
    /**
     * Axis constant: TouchMinor axis of a motion event.
     *
     * - For a touch screen, reports the length of the minor axis of an ellipse that
     * represents the touch area at the point of contact.
     * The units are display pixels.
     * - For a touch pad, reports the length of the minor axis of an ellipse that
     * represents the touch area at the point of contact.
     * The units are device-dependent.
     *
     * When the touch is circular, the major and minor axis lengths will be equal to one another.
     */
    TOUCH_MINOR = 5,
    /**
     * Axis constant: ToolMajor axis of a motion event.
     *
     * - For a touch screen, reports the length of the major axis of an ellipse that
     * represents the size of the approaching finger or tool used to make contact.
     * - For a touch pad, reports the length of the major axis of an ellipse that
     * represents the size of the approaching finger or tool used to make contact.
     * The units are device-dependent.
     *
     * When the touch is circular, the major and minor axis lengths will be equal to one another.
     *
     * The tool size may be larger than the touch size since the tool may not be fully
     * in contact with the touch sensor.
     */
    TOOL_MAJOR = 6,
    /**
     * Axis constant: ToolMinor axis of a motion event.
     *
     * - For a touch screen, reports the length of the minor axis of an ellipse that
     * represents the size of the approaching finger or tool used to make contact.
     * - For a touch pad, reports the length of the minor axis of an ellipse that
     * represents the size of the approaching finger or tool used to make contact.
     * The units are device-dependent.
     *
     * When the touch is circular, the major and minor axis lengths will be equal to one another.
     *
     * The tool size may be larger than the touch size since the tool may not be fully
     * in contact with the touch sensor.
     */
    TOOL_MINOR = 7,
    /**
     * Axis constant: Orientation axis of a motion event.
     *
     * - For a touch screen or touch pad, reports the orientation of the finger
     * or tool in radians relative to the vertical plane of the device.
     * An angle of 0 radians indicates that the major axis of contact is oriented
     * upwards, is perfectly circular or is of unknown orientation.  A positive angle
     * indicates that the major axis of contact is oriented to the right.  A negative angle
     * indicates that the major axis of contact is oriented to the left.
     * The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians
     * (finger pointing fully right).
     * - For a stylus, the orientation indicates the direction in which the stylus
     * is pointing in relation to the vertical axis of the current orientation of the screen.
     * The range is from -PI radians to PI radians, where 0 is pointing up,
     * -PI/2 radians is pointing left, -PI or PI radians is pointing down, and PI/2 radians
     * is pointing right.  See also #AMOTION_EVENT_AXIS_TILT.
     */
    ORIENTATION = 8,
    /**
     * Axis constant: Vertical Scroll axis of a motion event.
     *
     * - For a mouse, reports the relative movement of the vertical scroll wheel.
     * The value is normalized to a range from -1.0 (down) to 1.0 (up).
     *
     * This axis should be used to scroll views vertically.
     */
    VSCROLL = 9,
    /**
     * Axis constant: Horizontal Scroll axis of a motion event.
     *
     * - For a mouse, reports the relative movement of the horizontal scroll wheel.
     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
     *
     * This axis should be used to scroll views horizontally.
     */
    HSCROLL = 10,
    /**
     * Axis constant: Z axis of a motion event.
     *
     * - For a joystick, reports the absolute Z position of the joystick.
     * The value is normalized to a range from -1.0 (high) to 1.0 (low).
     * <em>On game pads with two analog joysticks, this axis is often reinterpreted
     * to report the absolute X position of the second joystick instead.</em>
     */
    Z = 11,
    /**
     * Axis constant: X Rotation axis of a motion event.
     *
     * - For a joystick, reports the absolute rotation angle about the X axis.
     * The value is normalized to a range from -1.0 (counter-clockwise) to 1.0 (clockwise).
     */
    RX = 12,
    /**
     * Axis constant: Y Rotation axis of a motion event.
     *
     * - For a joystick, reports the absolute rotation angle about the Y axis.
     * The value is normalized to a range from -1.0 (counter-clockwise) to 1.0 (clockwise).
     */
    RY = 13,
    /**
     * Axis constant: Z Rotation axis of a motion event.
     *
     * - For a joystick, reports the absolute rotation angle about the Z axis.
     * The value is normalized to a range from -1.0 (counter-clockwise) to 1.0 (clockwise).
     * On game pads with two analog joysticks, this axis is often reinterpreted
     * to report the absolute Y position of the second joystick instead.
     */
    RZ = 14,
    /**
     * Axis constant: Hat X axis of a motion event.
     *
     * - For a joystick, reports the absolute X position of the directional hat control.
     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
     */
    HAT_X = 15,
    /**
     * Axis constant: Hat Y axis of a motion event.
     *
     * - For a joystick, reports the absolute Y position of the directional hat control.
     * The value is normalized to a range from -1.0 (up) to 1.0 (down).
     */
    HAT_Y = 16,
    /**
     * Axis constant: Left Trigger axis of a motion event.
     *
     * - For a joystick, reports the absolute position of the left trigger control.
     * The value is normalized to a range from 0.0 (released) to 1.0 (fully pressed).
     */
    LTRIGGER = 17,
    /**
     * Axis constant: Right Trigger axis of a motion event.
     *
     * - For a joystick, reports the absolute position of the right trigger control.
     * The value is normalized to a range from 0.0 (released) to 1.0 (fully pressed).
     */
    RTRIGGER = 18,
    /**
     * Axis constant: Throttle axis of a motion event.
     *
     * - For a joystick, reports the absolute position of the throttle control.
     * The value is normalized to a range from 0.0 (fully open) to 1.0 (fully closed).
     */
    THROTTLE = 19,
    /**
     * Axis constant: Rudder axis of a motion event.
     *
     * - For a joystick, reports the absolute position of the rudder control.
     * The value is normalized to a range from -1.0 (turn left) to 1.0 (turn right).
     */
    RUDDER = 20,
    /**
     * Axis constant: Wheel axis of a motion event.
     *
     * - For a joystick, reports the absolute position of the steering wheel control.
     * The value is normalized to a range from -1.0 (turn left) to 1.0 (turn right).
     */
    WHEEL = 21,
    /**
     * Axis constant: Gas axis of a motion event.
     *
     * - For a joystick, reports the absolute position of the gas (accelerator) control.
     * The value is normalized to a range from 0.0 (no acceleration)
     * to 1.0 (maximum acceleration).
     */
    GAS = 22,
    /**
     * Axis constant: Brake axis of a motion event.
     *
     * - For a joystick, reports the absolute position of the brake control.
     * The value is normalized to a range from 0.0 (no braking) to 1.0 (maximum braking).
     */
    BRAKE = 23,
    /**
     * Axis constant: Distance axis of a motion event.
     *
     * - For a stylus, reports the distance of the stylus from the screen.
     * A value of 0.0 indicates direct contact and larger values indicate increasing
     * distance from the surface.
     */
    DISTANCE = 24,
    /**
     * Axis constant: Tilt axis of a motion event.
     *
     * - For a stylus, reports the tilt angle of the stylus in radians where
     * 0 radians indicates that the stylus is being held perpendicular to the
     * surface, and PI/2 radians indicates that the stylus is being held flat
     * against the surface.
     */
    TILT = 25,
    /**
     * Axis constant:  Generic scroll axis of a motion event.
     *
     * - This is used for scroll axis motion events that can't be classified as strictly
     *   vertical or horizontal. The movement of a rotating scroller is an example of this.
     */
    SCROLL = 26,
    /**
     * Axis constant: The movement of x position of a motion event.
     *
     * - For a mouse, reports a difference of x position between the previous position.
     * This is useful when pointer is captured, in that case the mouse pointer doesn't
     * change the location but this axis reports the difference which allows the app
     * to see how the mouse is moved.
     */
    RELATIVE_X = 27,
    /**
     * Axis constant: The movement of y position of a motion event.
     *
     * Same as #AMOTION_EVENT_AXIS_RELATIVE_X, but for y position.
     */
    RELATIVE_Y = 28,
    /**
     * Axis constant: Generic 1 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_1 = 32,
    /**
     * Axis constant: Generic 2 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_2 = 33,
    /**
     * Axis constant: Generic 3 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_3 = 34,
    /**
     * Axis constant: Generic 4 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_4 = 35,
    /**
     * Axis constant: Generic 5 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_5 = 36,
    /**
     * Axis constant: Generic 6 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_6 = 37,
    /**
     * Axis constant: Generic 7 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_7 = 38,
    /**
     * Axis constant: Generic 8 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_8 = 39,
    /**
     * Axis constant: Generic 9 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_9 = 40,
    /**
     * Axis constant: Generic 10 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_10 = 41,
    /**
     * Axis constant: Generic 11 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_11 = 42,
    /**
     * Axis constant: Generic 12 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_12 = 43,
    /**
     * Axis constant: Generic 13 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_13 = 44,
    /**
     * Axis constant: Generic 14 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_14 = 45,
    /**
     * Axis constant: Generic 15 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_15 = 46,
    /**
     * Axis constant: Generic 16 axis of a motion event.
     * The interpretation of a generic axis is device-specific.
     */
    GENERIC_16 = 47,
}

/**
 * Constants that identify buttons that are associated with motion events.
 * Refer to the documentation on the MotionEvent class for descriptions of each button.
 */
// TODO: bit_set this?
MotionEventButton :: enum {
    PRIMARY = 1 << 0,
    SECONDARY = 1 << 1,
    TERTIARY = 1 << 2,
    BACK = 1 << 3,
    FORWARD = 1 << 4,
    STYLUS_PRIMARY = 1 << 5,
    STYLUS_SECONDARY = 1 << 6,
}

/**
 * Constants that identify tool types.
 * Refer to the documentation on the MotionEvent class for descriptions of each tool type.
 */
ToolType :: enum i32 {
    UNKNOWN = 0,
    FINGER = 1,
    STYLUS = 2,
    MOUSE = 3,
    ERASER = 4,
    PALM = 5,
}

/**
 * Constants that identify different gesture classification types.
 */
AMotionClassification :: enum i32 {
    /**
     * Classification constant: None.
     *
     * No additional information is available about the current motion event stream.
     */
    NONE = 0,
    /**
     * Classification constant: Ambiguous gesture.
     *
     * The user's intent with respect to the current event stream is not yet determined. Events
     * starting in #AMOTION_EVENT_CLASSIFICATION_AMBIGUOUS_GESTURE will eventually resolve into
     * either #AMOTION_EVENT_CLASSIFICATION_DEEP_PRESS or #AMOTION_EVENT_CLASSIFICATION_NONE.
     * Gestural actions, such as scrolling, should be inhibited until the classification resolves
     * to another value or the event stream ends.
     */
    AMBIGUOUS_GESTURE = 1,
    /**
     * Classification constant: Deep press.
     *
     * The current event stream represents the user intentionally pressing harder on the screen.
     * This classification type should be used to accelerate the long press behaviour.
     */
    DEEP_PRESS = 2,
}

/**
 * Input source masks.
 *
 * Refer to the documentation on android.view.InputDevice for more details about input sources
 * and their correct interpretation.
 */
InputSourceClass :: enum i32 {
    NONE = 0x00000000,
    BUTTON = 0x00000001,
    POINTER = 0x00000002,
    NAVIGATION = 0x00000004,
    POSITION = 0x00000008,
    JOYSTICK = 0x00000010,
	MASK = 0x000000ff,
}

/**
 * Input sources.
 */
InputSource :: enum i32 {
    UNKNOWN = 0x00000000,

    KEYBOARD = 0x00000100 | i32(InputSourceClass.BUTTON),
    DPAD = 0x00000200 | i32(InputSourceClass.BUTTON),
    GAMEPAD = 0x00000400 | i32(InputSourceClass.BUTTON),
    TOUCHSCREEN = 0x00001000 | i32(InputSourceClass.POINTER),
    MOUSE = 0x00002000 | i32(InputSourceClass.POINTER),
    STYLUS = 0x00004000 | i32(InputSourceClass.POINTER),
    BLUETOOTH_STYLUS = 0x00008000 | STYLUS,
    TRACKBALL = 0x00010000 | i32(InputSourceClass.NAVIGATION),
    MOUSE_RELATIVE = 0x00020000 | i32(InputSourceClass.NAVIGATION),
    TOUCHPAD = 0x00100000 | i32(InputSourceClass.POSITION),
    TOUCH_NAVIGATION = 0x00200000 | i32(InputSourceClass.NONE),
    JOYSTICK = 0x01000000 | i32(InputSourceClass.JOYSTICK),
    HDMI = 0x02000000 | i32(InputSourceClass.BUTTON),
    SENSOR = 0x04000000 | i32(InputSourceClass.NONE),
    ROTARY_ENCODER = 0x00400000 | i32(InputSourceClass.NONE),

    ANY = -256, // 0xffffff00
}

/**
 * Keyboard types.
 *
 * Refer to the documentation on android.view.InputDevice for more details.
 * Note: When adding a new keyboard type here InputDeviceInfo::setKeyboardType needs to be updated.
 */
KeyBoardType :: enum {
    NONE = 0,
    NON_ALPHABETIC = 1,
    TYPE_ALPHABETIC = 2,
}

/**
 * Constants used to retrieve information about the range of motion for a particular
 * coordinate of a motion event.
 *
 * Refer to the documentation on android.view.InputDevice for more details about input sources
 * and their correct interpretation.
 *
 * @deprecated These constants are deprecated. Use {@link AMOTION_EVENT_AXIS AMOTION_EVENT_AXIS_*}
 * constants instead.
 */
// TODO: should I just delete this ??
MotionRange :: enum {
    X = 0,
    Y = 1,
    PRESSURE = 2,
    SIZE = 3,
    TOUCH_MAJOR = 4,
    TOUCH_MINOR = 5,
    TOOL_MAJOR = 6,
    TOOL_MINOR = 7,
    ORIENTATION = 8,
}

/**
 * Input events.
 *
 * Input events are opaque structures.  Use the provided accessors functions to
 * read their properties.
 */
AInputEvent :: struct{}
/**
 * Input queue
 *
 * An input queue is the facility through which you retrieve input
 * events.
 */
AInputQueue :: struct{}

foreign android {
	/** Get the input event type. */
	AInputEvent_getType :: proc(event: ^AInputEvent) -> InputEventType ---

	/** Get the id for the device that an input event came from.
	*
	* Input events can be generated by multiple different input devices.
	* Use the input device id to obtain information about the input
	* device that was responsible for generating a particular event.
	*
	* An input device id of 0 indicates that the event didn't come from a physical device
	* other numbers are arbitrary and you shouldn't depend on the values.
	* Use the provided input device query API to obtain information about input devices.
	*/
	AInputEvent_getDeviceId :: proc(event: ^AInputEvent) -> i32 ---

	/** Get the input event source. */
	AInputEvent_getSource :: proc(event: ^AInputEvent) -> InputSource ---

	/**
	* Releases interface objects created by {@link AKeyEvent_fromJava()}
	* and {@link AMotionEvent_fromJava()}.
	* After returning, the specified {@link AInputEvent}* object becomes invalid and should no longer
	* be used. The underlying Java object remains valid and does not change its state.
	*
	* Available since API level 31.
	*/
	AInputEvent_release :: proc(event: ^AInputEvent) ---

	/** Get the key event action. */
	AKeyEvent_getAction :: proc(key_event: ^AInputEvent) -> KeyEventAction ---

	/** Get the key event flags. */
	AKeyEvent_getFlags :: proc(key_event: ^AInputEvent) -> KeyEventFlags ---

	/**
	* Get the key code of the key event.
	* This is the physical key that was pressed, not the Unicode character.
	*/
	AKeyEvent_getKeyCode :: proc(key_event: ^AInputEvent) -> i32 ---

	/**
	* Get the hardware key id of this key event.
	* These values are not reliable and vary from device to device.
	*/
	AKeyEvent_getScanCode :: proc(key_event: ^AInputEvent) -> i32 ---

	/** Get the meta key state. */
	AKeyEvent_getMetaState :: proc(key_event: ^AInputEvent) -> MetaKeyState ---

	/**
	* Get the repeat count of the event.
	* For both key up an key down events, this is the number of times the key has
	* repeated with the first down starting at 0 and counting up from there.  For
	* multiple key events, this is the number of down/up pairs that have occurred.
	*/
	AKeyEvent_getRepeatCount :: proc(key_event: ^AInputEvent) -> i32 ---

	/**
	* Get the time of the most recent key down event, in the
	* java.lang.System.nanoTime() time base.  If this is a down event,
	* this will be the same as eventTime.
	* Note that when chording keys, this value is the down time of the most recently
	* pressed key, which may not be the same physical key of this event.
	*/
	AKeyEvent_getDownTime :: proc(key_event: ^AInputEvent) -> i64 ---

	/**
	* Get the time this event occurred, in the
	* java.lang.System.nanoTime() time base.
	*/
	AKeyEvent_getEventTime :: proc(key_event: ^AInputEvent) -> i64 ---

	/**
	* Creates a native {@link AInputEvent}* object that is a copy of the specified Java
	* android.view.KeyEvent. The result may be used with generic and KeyEvent-specific AInputEvent_*
	* functions. The object returned by this function must be disposed using
	* {@link AInputEvent_release()}.
	*
	* Available since API level 31.
	*/
	AKeyEvent_fromJava :: proc(env: ^JNIEnv, keyEvent: jobject) -> ^AInputEvent ---

	/** Get the combined motion event action code and pointer index. */
	AMotionEvent_getAction :: proc(motion_event: ^AInputEvent) -> MotionEventAction ---

	/** Get the motion event flags. */
	AMotionEvent_getFlags :: proc(motion_event: ^AInputEvent) -> MotionEventFlags ---

	/**
	* Get the state of any meta / modifier keys that were in effect when the
	* event was generated.
	*/
	AMotionEvent_getMetaState :: proc(motion_event: ^AInputEvent) -> MetaKeyState ---

	/** Get the button state of all buttons that are pressed. */
	// TODO: Do we have an enum or bit_set for this ??? this might be MotionEventButton but we'll double check by 
	// writing some code and printing values.
	AMotionEvent_getButtonState :: proc(motion_event: ^AInputEvent) -> i32 ---

	/**
	* Get a bitfield indicating which edges, if any, were touched by this motion event.
	* For touch events, clients can use this to determine if the user's finger was
	* touching the edge of the display.
	*/
	AMotionEvent_getEdgeFlags :: proc(motion_event: ^AInputEvent) -> MotionEventEdgeFlags ---

	/**
	* Get the time when the user originally pressed down to start a stream of
	* position events, in the java.lang.System.nanoTime() time base.
	*/
	AMotionEvent_getDownTime :: proc(motion_event: ^AInputEvent) -> i64 ---

	/**
	* Get the time when this specific event was generated,
	* in the java.lang.System.nanoTime() time base.
	*/
	AMotionEvent_getEventTime :: proc(motion_event: ^AInputEvent) -> i64 ---

	/**
	* Get the X coordinate offset.
	* For touch events on the screen, this is the delta that was added to the raw
	* screen coordinates to adjust for the absolute position of the containing windows
	* and views.
	*/
	AMotionEvent_getXOffset :: proc(motion_event: ^AInputEvent) -> f32 ---

	/**
	* Get the Y coordinate offset.
	* For touch events on the screen, this is the delta that was added to the raw
	* screen coordinates to adjust for the absolute position of the containing windows
	* and views.
	*/
	AMotionEvent_getYOffset :: proc(motion_event: ^AInputEvent) -> f32 ---

	/**
	* Get the precision of the X coordinates being reported.
	* You can multiply this number with an X coordinate sample to find the
	* actual hardware value of the X coordinate.
	*/
	AMotionEvent_getXPrecision :: proc(#by_ptr motion_event: AInputEvent) -> f32 ---

	/**
	* Get the precision of the Y coordinates being reported.
	* You can multiply this number with a Y coordinate sample to find the
	* actual hardware value of the Y coordinate.
	*/
	AMotionEvent_getYPrecision :: proc(#by_ptr motion_event: AInputEvent) -> f32 ---

	/**
	* Get the number of pointers of data contained in this event.
	* Always >= 1.
	*/
	AMotionEvent_getPointerCount :: proc(motion_event: ^AInputEvent) -> uint ---

	/**
	* Get the pointer identifier associated with a particular pointer
	* data index in this event.  The identifier tells you the actual pointer
	* number associated with the data, accounting for individual pointers
	* going up and down since the start of the current gesture.
	*/
	AMotionEvent_getPointerId :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> i32 ---

	/**
	* Get the tool type of a pointer for the given pointer index.
	* The tool type indicates the type of tool used to make contact such as a
	* finger or stylus, if known.
	*/
	AMotionEvent_getToolType :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> ToolType ---

	/**
	* Get the original raw X coordinate of this event.
	* For touch events on the screen, this is the original location of the event
	* on the screen, before it had been adjusted for the containing window
	* and views.
	*/
	AMotionEvent_getRawX :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> f32 ---

	/**
	* Get the original raw X coordinate of this event.
	* For touch events on the screen, this is the original location of the event
	* on the screen, before it had been adjusted for the containing window
	* and views.
	*/
	AMotionEvent_getRawY :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> f32 ---

	/**
	* Get the current X coordinate of this event for the given pointer index.
	* Whole numbers are pixels the value may have a fraction for input devices
	* that are sub-pixel precise.
	*/
	AMotionEvent_getX :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> f32 ---

	/**
	* Get the current Y coordinate of this event for the given pointer index.
	* Whole numbers are pixels the value may have a fraction for input devices
	* that are sub-pixel precise.
	*/
	AMotionEvent_getY :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> f32 ---

	/**
	* Get the current pressure of this event for the given pointer index.
	* The pressure generally ranges from 0 (no pressure at all) to 1 (normal pressure),
	* although values higher than 1 may be generated depending on the calibration of
	* the input device.
	*/
	AMotionEvent_getPressure :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> f32 ---

	/**
	* Get the current scaled value of the approximate size for the given pointer index.
	* This represents some approximation of the area of the screen being
	* pressed the actual value in pixels corresponding to the
	* touch is normalized with the device specific range of values
	* and scaled to a value between 0 and 1.  The value of size can be used to
	* determine fat touch events.
	*/
	AMotionEvent_getSize :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> f32 ---

	/**
	* Get the current length of the major axis of an ellipse that describes the touch area
	* at the point of contact for the given pointer index.
	*/
	AMotionEvent_getTouchMajor :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> f32 ---

	/**
	* Get the current length of the minor axis of an ellipse that describes the touch area
	* at the point of contact for the given pointer index.
	*/
	AMotionEvent_getTouchMinor :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> f32 ---

	/**
	* Get the current length of the major axis of an ellipse that describes the size
	* of the approaching tool for the given pointer index.
	* The tool area represents the estimated size of the finger or pen that is
	* touching the device independent of its actual touch area at the point of contact.
	*/
	AMotionEvent_getToolMajor :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> f32 ---

	/**
	* Get the current length of the minor axis of an ellipse that describes the size
	* of the approaching tool for the given pointer index.
	* The tool area represents the estimated size of the finger or pen that is
	* touching the device independent of its actual touch area at the point of contact.
	*/
	AMotionEvent_getToolMinor :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> f32 ---

	/**
	* Get the current orientation of the touch area and tool area in radians clockwise from
	* vertical for the given pointer index.
	* An angle of 0 degrees indicates that the major axis of contact is oriented
	* upwards, is perfectly circular or is of unknown orientation.  A positive angle
	* indicates that the major axis of contact is oriented to the right.  A negative angle
	* indicates that the major axis of contact is oriented to the left.
	* The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians
	* (finger pointing fully right).
	*/
	AMotionEvent_getOrientation :: proc(motion_event: ^AInputEvent, pointer_index: uint) -> f32 ---

	/** Get the value of the request axis for the given pointer index. */
	AMotionEvent_getAxisValue :: proc(motion_event: ^AInputEvent, axis: MotionEventAxis, pointer_index: uint) -> f32 ---

	/**
	* Get the number of historical points in this event.  These are movements that
	* have occurred between this event and the previous event.  This only applies
	* to #AMOTION_EVENT_ACTION_MOVE events -- all other actions will have a size of 0.
	* Historical samples are indexed from oldest to newest.
	*/
	AMotionEvent_getHistorySize :: proc(motion_event: ^AInputEvent) -> uint ---

	/**
	* Get the time that a historical movement occurred between this event and
	* the previous event, in the java.lang.System.nanoTime() time base.
	*/
	AMotionEvent_getHistoricalEventTime :: proc(motion_event: ^AInputEvent, history_index: uint) -> i64 ---

	/**
	* Get the historical raw X coordinate of this event for the given pointer index that
	* occurred between this event and the previous motion event.
	* For touch events on the screen, this is the original location of the event
	* on the screen, before it had been adjusted for the containing window
	* and views.
	* Whole numbers are pixels the value may have a fraction for input devices
	* that are sub-pixel precise.
	*/
	AMotionEvent_getHistoricalRawX :: proc(motion_event: ^AInputEvent, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the historical raw Y coordinate of this event for the given pointer index that
	* occurred between this event and the previous motion event.
	* For touch events on the screen, this is the original location of the event
	* on the screen, before it had been adjusted for the containing window
	* and views.
	* Whole numbers are pixels the value may have a fraction for input devices
	* that are sub-pixel precise.
	*/
	AMotionEvent_getHistoricalRawY :: proc(motion_event: ^AInputEvent, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the historical X coordinate of this event for the given pointer index that
	* occurred between this event and the previous motion event.
	* Whole numbers are pixels the value may have a fraction for input devices
	* that are sub-pixel precise.
	*/
	AMotionEvent_getHistoricalX :: proc(motion_event: ^AInputEvent, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the historical Y coordinate of this event for the given pointer index that
	* occurred between this event and the previous motion event.
	* Whole numbers are pixels the value may have a fraction for input devices
	* that are sub-pixel precise.
	*/
	AMotionEvent_getHistoricalY :: proc(motion_event: ^AInputEvent, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the historical pressure of this event for the given pointer index that
	* occurred between this event and the previous motion event.
	* The pressure generally ranges from 0 (no pressure at all) to 1 (normal pressure),
	* although values higher than 1 may be generated depending on the calibration of
	* the input device.
	*/
	AMotionEvent_getHistoricalPressure :: proc(motion_event: ^AInputEvent, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the current scaled value of the approximate size for the given pointer index that
	* occurred between this event and the previous motion event.
	* This represents some approximation of the area of the screen being
	* pressed the actual value in pixels corresponding to the
	* touch is normalized with the device specific range of values
	* and scaled to a value between 0 and 1.  The value of size can be used to
	* determine fat touch events.
	*/
	AMotionEvent_getHistoricalSize :: proc(motion_event: ^AInputEvent, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the historical length of the major axis of an ellipse that describes the touch area
	* at the point of contact for the given pointer index that
	* occurred between this event and the previous motion event.
	*/
	AMotionEvent_getHistoricalTouchMajor :: proc(motion_event: ^AInputEvent, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the historical length of the minor axis of an ellipse that describes the touch area
	* at the point of contact for the given pointer index that
	* occurred between this event and the previous motion event.
	*/
	AMotionEvent_getHistoricalTouchMinor :: proc(motion_event: ^AInputEvent, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the historical length of the major axis of an ellipse that describes the size
	* of the approaching tool for the given pointer index that
	* occurred between this event and the previous motion event.
	* The tool area represents the estimated size of the finger or pen that is
	* touching the device independent of its actual touch area at the point of contact.
	*/
	AMotionEvent_getHistoricalToolMajor :: proc(motion_event: ^AInputEvent, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the historical length of the minor axis of an ellipse that describes the size
	* of the approaching tool for the given pointer index that
	* occurred between this event and the previous motion event.
	* The tool area represents the estimated size of the finger or pen that is
	* touching the device independent of its actual touch area at the point of contact.
	*/
	AMotionEvent_getHistoricalToolMinor :: proc(motion_event: ^AInputEvent, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the historical orientation of the touch area and tool area in radians clockwise from
	* vertical for the given pointer index that
	* occurred between this event and the previous motion event.
	* An angle of 0 degrees indicates that the major axis of contact is oriented
	* upwards, is perfectly circular or is of unknown orientation.  A positive angle
	* indicates that the major axis of contact is oriented to the right.  A negative angle
	* indicates that the major axis of contact is oriented to the left.
	* The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians
	* (finger pointing fully right).
	*/
	AMotionEvent_getHistoricalOrientation :: proc(motion_event: ^AInputEvent, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the historical value of the request axis for the given pointer index
	* that occurred between this event and the previous motion event.
	*/
	AMotionEvent_getHistoricalAxisValue :: proc(motion_event: ^AInputEvent, axis: MotionEventAxis, pointer_index: uint, history_index: uint) -> f32 ---

	/**
	* Get the action button for the motion event. Returns a valid action button when the
	* event is associated with a button press or button release action. For other actions
	* the return value is undefined.
	*
	* Available since API level 33.
	*
	* @see #AMOTION_EVENT_BUTTON_PRIMARY
	* @see #AMOTION_EVENT_BUTTON_SECONDARY
	* @see #AMOTION_EVENT_BUTTON_TERTIARY
	* @see #AMOTION_EVENT_BUTTON_BACK
	* @see #AMOTION_EVENT_BUTTON_FORWARD
	* @see #AMOTION_EVENT_BUTTON_STYLUS_PRIMARY
	* @see #AMOTION_EVENT_BUTTON_STYLUS_SECONDARY
	*/
	AMotionEvent_getActionButton :: proc(motion_event: ^AInputEvent) -> MotionEventButton ---

	/**
	* Returns the classification for the current gesture.
	* The classification may change as more events become available for the same gesture.
	*
	* Available since API level 33.
	*
	* @see #AMOTION_EVENT_CLASSIFICATION_NONE
	* @see #AMOTION_EVENT_CLASSIFICATION_AMBIGUOUS_GESTURE
	* @see #AMOTION_EVENT_CLASSIFICATION_DEEP_PRESS
	*/
	AMotionEvent_getClassification :: proc(motion_event: ^AInputEvent) -> AMotionClassification ---

	/**
	* Creates a native {@link AInputEvent}* object that is a copy of the specified Java
	* android.view.MotionEvent. The result may be used with generic and MotionEvent-specific
	* AInputEvent_* functions. The object returned by this function must be disposed using
	* {@link AInputEvent_release()}.
	*
	* Available since API level 31.
	*/
	AMotionEvent_fromJava :: proc(env: ^JNIEnv, motionEvent: jobject) -> ^AInputEvent ---

	/**
	* Add this input queue to a looper for processing.  See
	* {@link ALooper_addFd()} for information on the ident, callback, and data params.
	*/
	AInputQueue_attachLooper :: proc(queue: ^AInputQueue, looper: ^ALooper, ident: i32, callback: ALooper_callbackFunc, data: rawptr) ---

	/**
	* Remove the input queue from the looper it is currently attached to.
	*/
	AInputQueue_detachLooper :: proc(queue: ^AInputQueue) ---

	/**
	* Returns true if there are one or more events available in the
	* input queue.  Returns 1 if the queue has events 0 if
	* it does not have events and a negative value if there is an error.
	*/
	AInputQueue_hasEvents :: proc(queue: ^AInputQueue) -> i32 ---

	/**
	* Returns the next available event from the queue.  Returns a negative
	* value if no events are available or an error has occurred.
	*/
	AInputQueue_getEvent :: proc(queue: ^AInputQueue, outEvent: ^^AInputEvent) -> i32 ---

	/**
	* Sends the key for standard pre-dispatching -- that is, possibly deliver
	* it to the current IME to be consumed before the app.  Returns 0 if it
	* was not pre-dispatched, meaning you can process it right now.  If non-zero
	* is returned, you must abandon the current event processing and allow the
	* event to appear again in the event queue (if it does not get consumed during
	* pre-dispatching).
	*/
	AInputQueue_preDispatchEvent :: proc(queue: ^AInputQueue, event: ^AInputEvent) -> i32 ---

	/**
	* Report that dispatching has finished with the given event.
	* This must be called after receiving an event with {@link AInputQueue_getEvent()}.
	*/
	AInputQueue_finishEvent :: proc(queue: ^AInputQueue, event: ^AInputEvent, handled: i32) ---

	/**
	* Returns the {@link AInputQueue}* object associated with the supplied Java InputQueue
	* object. The returned native object holds a weak reference to the Java object,
	* and is only valid as long as the Java object has not yet been disposed. You
	* should ensure that there is a strong reference to the Java object and that it
	* has not been disposed before using the returned object.
	*
	* Available since API level 33.
	*/
	AInputQueue_fromJava :: proc(env: ^JNIEnv, inputQueue: jobject) -> ^AInputQueue ---
}