;;; guile-sdl3 -- Scheme bindings for SDL3
;;; Copyright © 2024 David Thompson <dthompson2@worcester.edu>
;;;
;;; 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.

;;; Commentary:
;;
;; Low-level FFI binding utilities.
;;
;;; Code:

(define-module (sdl3 bindings events)
  #:use-module (bstruct)
  #:use-module (sdl3 bindings utils)
  #:use-module (system foreign)
  #:export (SDL_EventType
            symbol->event-type
            event-type->symbol
            SDL_EVENT_FIRST
            SDL_EVENT_QUIT
            SDL_EVENT_TERMINATING
            SDL_EVENT_LOW_MEMORY
            SDL_EVENT_WILL_ENTER_BACKGROUND
            SDL_EVENT_DID_ENTER_BACKGROUND
            SDL_EVENT_WILL_ENTER_FOREGROUND
            SDL_EVENT_DID_ENTER_FOREGROUND
            SDL_EVENT_LOCALE_CHANGED
            SDL_EVENT_SYSTEM_THEME_CHANGED
            SDL_EVENT_DISPLAY_ORIENTATION
            SDL_EVENT_DISPLAY_ADDED
            SDL_EVENT_DISPLAY_REMOVED
            SDL_EVENT_DISPLAY_MOVED
            SDL_EVENT_DISPLAY_DESKTOP_MODE_CHANGED
            SDL_EVENT_DISPLAY_CURRENT_MODE_CHANGED
            SDL_EVENT_DISPLAY_CONTENT_SCALE_CHANGED
            SDL_EVENT_WINDOW_SHOWN
            SDL_EVENT_WINDOW_HIDDEN
            SDL_EVENT_WINDOW_EXPOSED
            SDL_EVENT_WINDOW_MOVED
            SDL_EVENT_WINDOW_RESIZED
            SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED
            SDL_EVENT_WINDOW_METAL_VIEW_RESIZED
            SDL_EVENT_WINDOW_MINIMIZED
            SDL_EVENT_WINDOW_MAXIMIZED
            SDL_EVENT_WINDOW_RESTORED
            SDL_EVENT_WINDOW_MOUSE_ENTER
            SDL_EVENT_WINDOW_MOUSE_LEAVE
            SDL_EVENT_WINDOW_FOCUS_GAINED
            SDL_EVENT_WINDOW_FOCUS_LOST
            SDL_EVENT_WINDOW_CLOSE_REQUESTED
            SDL_EVENT_WINDOW_HIT_TEST
            SDL_EVENT_WINDOW_ICCPROF_CHANGED
            SDL_EVENT_WINDOW_DISPLAY_CHANGED
            SDL_EVENT_WINDOW_DISPLAY_SCALE_CHANGED
            SDL_EVENT_WINDOW_SAFE_AREA_CHANGED
            SDL_EVENT_WINDOW_OCCLUDED
            SDL_EVENT_WINDOW_ENTER_FULLSCREEN
            SDL_EVENT_WINDOW_LEAVE_FULLSCREEN
            SDL_EVENT_WINDOW_DESTROYED
            SDL_EVENT_WINDOW_HDR_STATE_CHANGED
            SDL_EVENT_KEY_DOWN
            SDL_EVENT_KEY_UP
            SDL_EVENT_TEXT_EDITING
            SDL_EVENT_TEXT_INPUT
            SDL_EVENT_KEYMAP_CHANGED
            SDL_EVENT_KEYBOARD_ADDED
            SDL_EVENT_KEYBOARD_REMOVED
            SDL_EVENT_TEXT_EDITING_CANDIDATES
            SDL_EVENT_MOUSE_MOTION
            SDL_EVENT_MOUSE_BUTTON_DOWN
            SDL_EVENT_MOUSE_BUTTON_UP
            SDL_EVENT_MOUSE_WHEEL
            SDL_EVENT_MOUSE_ADDED
            SDL_EVENT_MOUSE_REMOVED
            SDL_EVENT_JOYSTICK_AXIS_MOTION
            SDL_EVENT_JOYSTICK_BALL_MOTION
            SDL_EVENT_JOYSTICK_HAT_MOTION
            SDL_EVENT_JOYSTICK_BUTTON_DOWN
            SDL_EVENT_JOYSTICK_BUTTON_UP
            SDL_EVENT_JOYSTICK_ADDED
            SDL_EVENT_JOYSTICK_REMOVED
            SDL_EVENT_JOYSTICK_BATTERY_UPDATED
            SDL_EVENT_JOYSTICK_UPDATE_COMPLETE
            SDL_EVENT_GAMEPAD_AXIS_MOTION
            SDL_EVENT_GAMEPAD_BUTTON_DOWN
            SDL_EVENT_GAMEPAD_BUTTON_UP
            SDL_EVENT_GAMEPAD_ADDED
            SDL_EVENT_GAMEPAD_REMOVED
            SDL_EVENT_GAMEPAD_REMAPPED
            SDL_EVENT_GAMEPAD_TOUCHPAD_DOWN
            SDL_EVENT_GAMEPAD_TOUCHPAD_MOTION
            SDL_EVENT_GAMEPAD_TOUCHPAD_UP
            SDL_EVENT_GAMEPAD_SENSOR_UPDATE
            SDL_EVENT_GAMEPAD_UPDATE_COMPLETE
            SDL_EVENT_GAMEPAD_STEAM_HANDLE_UPDATED
            SDL_EVENT_FINGER_DOWN
            SDL_EVENT_FINGER_UP
            SDL_EVENT_FINGER_MOTION
            SDL_EVENT_CLIPBOARD_UPDATE
            SDL_EVENT_DROP_FILE
            SDL_EVENT_DROP_TEXT
            SDL_EVENT_DROP_BEGIN
            SDL_EVENT_DROP_COMPLETE
            SDL_EVENT_DROP_POSITION
            SDL_EVENT_AUDIO_DEVICE_ADDED
            SDL_EVENT_AUDIO_DEVICE_REMOVED
            SDL_EVENT_AUDIO_DEVICE_FORMAT_CHANGED
            SDL_EVENT_SENSOR_UPDATE
            SDL_EVENT_PEN_PROXIMITY_IN
            SDL_EVENT_PEN_PROXIMITY_OUT
            SDL_EVENT_PEN_DOWN
            SDL_EVENT_PEN_UP
            SDL_EVENT_PEN_BUTTON_DOWN
            SDL_EVENT_PEN_BUTTON_UP
            SDL_EVENT_PEN_MOTION
            SDL_EVENT_PEN_AXIS
            SDL_EVENT_CAMERA_DEVICE_ADDED
            SDL_EVENT_CAMERA_DEVICE_REMOVED
            SDL_EVENT_CAMERA_DEVICE_APPROVED
            SDL_EVENT_CAMERA_DEVICE_DENIED
            SDL_EVENT_RENDER_TARGETS_RESET
            SDL_EVENT_RENDER_DEVICE_RESET
            SDL_EVENT_POLL_SENTINEL
            SDL_EVENT_DISPLAY_FIRST
            SDL_EVENT_DISPLAY_LAST
            SDL_EVENT_WINDOW_FIRST
            SDL_EVENT_WINDOW_LAST
            SDL_EVENT_USER
            SDL_EVENT_LAST
            SDL_EVENT_ENUM_PADDING

            SDL_CommonEvent
            SDL_DisplayEvent
            SDL_WindowEvent
            SDL_KeyboardDeviceEvent
            SDL_KeyboardEvent
            SDL_TextEditingEvent
            SDL_TextEditingCandidatesEvent
            SDL_TextInputEvent
            SDL_MouseDeviceEvent
            SDL_MouseMotionEvent
            SDL_MouseButtonEvent
            SDL_MouseWheelEvent
            SDL_JoyAxisEvent
            SDL_JoyBallEvent
            SDL_JoyHatEvent
            SDL_JoyButtonEvent
            SDL_JoyDeviceEvent
            SDL_JoyBatteryEvent
            SDL_GamepadAxisEvent
            SDL_GamepadButtonEvent
            SDL_GamepadDeviceEvent
            SDL_GamepadTouchpadEvent
            SDL_GamepadSensorEvent
            SDL_AudioDeviceEvent
            SDL_CameraDeviceEvent
            SDL_TouchFingerEvent
            SDL_PenProximityEvent
            SDL_PenMotionEvent
            SDL_PenTouchEvent
            SDL_PenButtonEvent
            SDL_PenAxisEvent
            SDL_DropEvent
            SDL_ClipboardEvent
            SDL_SensorEvent
            SDL_QuitEvent
            SDL_UserEvent
            SDL_Event

            SDL_PumpEvents
            SDL_HasEvent
            SDL_HasEvents
            SDL_FlushEvent
            SDL_FlushEvents
            SDL_PollEvent
            SDL_WaitEvent
            SDL_WaitEventTimeout
            SDL_PushEvent))

(define-enum SDL_EventType
  symbol->event-type
  event-type->symbol
  (first SDL_EVENT_FIRST)
  (quit SDL_EVENT_QUIT #x100)
  (terminating SDL_EVENT_TERMINATING)
  (low-memory SDL_EVENT_LOW_MEMORY)
  (will-enter-background SDL_EVENT_WILL_ENTER_BACKGROUND)
  (did-enter-background SDL_EVENT_DID_ENTER_BACKGROUND)
  (will-enter-foreground SDL_EVENT_WILL_ENTER_FOREGROUND)
  (did-enter-foreground SDL_EVENT_DID_ENTER_FOREGROUND)
  (locale-changed SDL_EVENT_LOCALE_CHANGED)
  (system-theme-changed SDL_EVENT_SYSTEM_THEME_CHANGED)
  (display-orientation SDL_EVENT_DISPLAY_ORIENTATION #x151)
  (display-added SDL_EVENT_DISPLAY_ADDED)
  (display-removed SDL_EVENT_DISPLAY_REMOVED)
  (display-moved SDL_EVENT_DISPLAY_MOVED)
  (display-desktop-mode-changed SDL_EVENT_DISPLAY_DESKTOP_MODE_CHANGED)
  (display-current-mode-changed SDL_EVENT_DISPLAY_CURRENT_MODE_CHANGED)
  (display-content-scale-changed SDL_EVENT_DISPLAY_CONTENT_SCALE_CHANGED)
  (window-shown SDL_EVENT_WINDOW_SHOWN #x202)
  (window-hidden SDL_EVENT_WINDOW_HIDDEN)
  (window-exposed SDL_EVENT_WINDOW_EXPOSED)
  (window-moved SDL_EVENT_WINDOW_MOVED)
  (window-resized SDL_EVENT_WINDOW_RESIZED)
  (window-pixel-size-changed SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED)
  (window-metal-view-resized SDL_EVENT_WINDOW_METAL_VIEW_RESIZED)
  (window-minimized SDL_EVENT_WINDOW_MINIMIZED)
  (window-maximized SDL_EVENT_WINDOW_MAXIMIZED)
  (window-restored SDL_EVENT_WINDOW_RESTORED)
  (window-mouse-enter SDL_EVENT_WINDOW_MOUSE_ENTER)
  (window-mouse-leave SDL_EVENT_WINDOW_MOUSE_LEAVE)
  (window-focus-gained SDL_EVENT_WINDOW_FOCUS_GAINED)
  (window-focus-lost SDL_EVENT_WINDOW_FOCUS_LOST)
  (window-close-requested SDL_EVENT_WINDOW_CLOSE_REQUESTED)
  (window-hit-test SDL_EVENT_WINDOW_HIT_TEST)
  (window-iccprof-changed SDL_EVENT_WINDOW_ICCPROF_CHANGED)
  (window-display-changed SDL_EVENT_WINDOW_DISPLAY_CHANGED)
  (window-display-scale-changed SDL_EVENT_WINDOW_DISPLAY_SCALE_CHANGED)
  (window-safe-area-changed SDL_EVENT_WINDOW_SAFE_AREA_CHANGED)
  (window-occluded SDL_EVENT_WINDOW_OCCLUDED)
  (window-enter-fullscreen SDL_EVENT_WINDOW_ENTER_FULLSCREEN)
  (window-leave-fullscreen SDL_EVENT_WINDOW_LEAVE_FULLSCREEN)
  (window-destroyed SDL_EVENT_WINDOW_DESTROYED)
  (window-hdr-state-changed SDL_EVENT_WINDOW_HDR_STATE_CHANGED)
  (key-down SDL_EVENT_KEY_DOWN #x300)
  (key-up SDL_EVENT_KEY_UP)
  (text-editing SDL_EVENT_TEXT_EDITING)
  (text-input SDL_EVENT_TEXT_INPUT)
  (keymap-changed SDL_EVENT_KEYMAP_CHANGED)
  (keyboard-added SDL_EVENT_KEYBOARD_ADDED)
  (keyboard-removed SDL_EVENT_KEYBOARD_REMOVED)
  (text-editing-candidates SDL_EVENT_TEXT_EDITING_CANDIDATES)
  (mouse-motion SDL_EVENT_MOUSE_MOTION #x400)
  (mouse-button-down SDL_EVENT_MOUSE_BUTTON_DOWN)
  (mouse-button-up SDL_EVENT_MOUSE_BUTTON_UP)
  (mouse-wheel SDL_EVENT_MOUSE_WHEEL)
  (mouse-added SDL_EVENT_MOUSE_ADDED)
  (mouse-removed SDL_EVENT_MOUSE_REMOVED)
  (joystick-axis-motion SDL_EVENT_JOYSTICK_AXIS_MOTION #x600)
  (joystick-ball-motion SDL_EVENT_JOYSTICK_BALL_MOTION)
  (joystick-hat-motion SDL_EVENT_JOYSTICK_HAT_MOTION)
  (joystick-button-down SDL_EVENT_JOYSTICK_BUTTON_DOWN)
  (joystick-button-up SDL_EVENT_JOYSTICK_BUTTON_UP)
  (joystick-added SDL_EVENT_JOYSTICK_ADDED)
  (joystick-removed SDL_EVENT_JOYSTICK_REMOVED)
  (joystick-battery-updated SDL_EVENT_JOYSTICK_BATTERY_UPDATED)
  (joystick-update-complete SDL_EVENT_JOYSTICK_UPDATE_COMPLETE)
  (gamepad-axis-motion SDL_EVENT_GAMEPAD_AXIS_MOTION #x650)
  (gamepad-button-down SDL_EVENT_GAMEPAD_BUTTON_DOWN)
  (gamepad-button-up SDL_EVENT_GAMEPAD_BUTTON_UP)
  (gamepad-added SDL_EVENT_GAMEPAD_ADDED)
  (gamepad-removed SDL_EVENT_GAMEPAD_REMOVED)
  (gamepad-remapped SDL_EVENT_GAMEPAD_REMAPPED)
  (gamepad-touchpad-down SDL_EVENT_GAMEPAD_TOUCHPAD_DOWN)
  (gamepad-touchpad-motion SDL_EVENT_GAMEPAD_TOUCHPAD_MOTION)
  (gamepad-touchpad-up SDL_EVENT_GAMEPAD_TOUCHPAD_UP)
  (gamepad-sensor-update SDL_EVENT_GAMEPAD_SENSOR_UPDATE)
  (gamepad-update-complete SDL_EVENT_GAMEPAD_UPDATE_COMPLETE)
  (gamepad-steam-handle-updated SDL_EVENT_GAMEPAD_STEAM_HANDLE_UPDATED)
  (finger-down SDL_EVENT_FINGER_DOWN #x700)
  (finger-up SDL_EVENT_FINGER_UP)
  (finger-motion SDL_EVENT_FINGER_MOTION)
  (clipboard-update SDL_EVENT_CLIPBOARD_UPDATE #x900)
  (drop-file SDL_EVENT_DROP_FILE #x1000)
  (drop-text SDL_EVENT_DROP_TEXT)
  (drop-begin SDL_EVENT_DROP_BEGIN)
  (drop-complete SDL_EVENT_DROP_COMPLETE)
  (drop-position SDL_EVENT_DROP_POSITION)
  (audio-device-added SDL_EVENT_AUDIO_DEVICE_ADDED #x1100)
  (audio-device-removed SDL_EVENT_AUDIO_DEVICE_REMOVED)
  (audio-device-format-changed SDL_EVENT_AUDIO_DEVICE_FORMAT_CHANGED)
  (sensor-update SDL_EVENT_SENSOR_UPDATE #x1200)
  (pen-proximity-in SDL_EVENT_PEN_PROXIMITY_IN #x1300)
  (pen-proximity-out SDL_EVENT_PEN_PROXIMITY_OUT)
  (pen-down SDL_EVENT_PEN_DOWN)
  (pen-up SDL_EVENT_PEN_UP)
  (pen-button-down SDL_EVENT_PEN_BUTTON_DOWN)
  (pen-button-up SDL_EVENT_PEN_BUTTON_UP)
  (pen-motion SDL_EVENT_PEN_MOTION)
  (pen-axis SDL_EVENT_PEN_AXIS)
  (camera-device-added SDL_EVENT_CAMERA_DEVICE_ADDED #x1400)
  (camera-device-removed SDL_EVENT_CAMERA_DEVICE_REMOVED)
  (camera-device-approved SDL_EVENT_CAMERA_DEVICE_APPROVED)
  (camera-device-denied SDL_EVENT_CAMERA_DEVICE_DENIED)
  (render-targets-reset SDL_EVENT_RENDER_TARGETS_RESET #x2000)
  (render-device-reset SDL_EVENT_RENDER_DEVICE_RESET)
  (poll-sentinel SDL_EVENT_POLL_SENTINEL #x7F00))

(define SDL_EVENT_DISPLAY_FIRST SDL_EVENT_DISPLAY_ORIENTATION)
(define SDL_EVENT_DISPLAY_LAST  SDL_EVENT_DISPLAY_CONTENT_SCALE_CHANGED)
(define SDL_EVENT_WINDOW_FIRST  SDL_EVENT_WINDOW_SHOWN)
(define SDL_EVENT_WINDOW_LAST   SDL_EVENT_WINDOW_HDR_STATE_CHANGED)
(define SDL_EVENT_USER          #x8000)
(define SDL_EVENT_LAST          #xFFFF)
(define SDL_EVENT_ENUM_PADDING  #x7FFFFFFF)

(define-bstruct SDL_CommonEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)))

(define-bstruct SDL_DisplayEvent
  (struct
   (type int) ; SDL_EventType
   (reserved uint32)
   (timestamp uint64)
   (displayID uint32) ; SDL_DisplayID
   (data1 int32)
   (data2 int32)))

(define-bstruct SDL_WindowEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (data1 int32)
   (data2 int32)))

(define-bstruct SDL_KeyboardDeviceEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_KeyboardID
   ))

(define-bstruct SDL_KeyboardEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (which uint32) ; SDL_KeyboardID
   (scancode int) ; SDL_Scancode
   (key int) ; SDL_Keycode
   (mod uint16) ; SDL_Keymod
   (raw uint16)
   (down uint8) ; bool
   (repeat uint8) ; bool
   ))

(define-bstruct SDL_TextEditingEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (text (* uint8)) ; char*
   (start int32)
   (length int32)))

(define-bstruct SDL_TextEditingCandidatesEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (candidates (* uint8))
   (num_candidates int32)
   (selected_candidate int32)
   (horizontal uint8) ; bool
   (_ uint8)
   (_ uint8)
   (_ uint8)))

(define-bstruct SDL_TextInputEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (text (* uint8))))

(define-bstruct SDL_MouseDeviceEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_MouseID
   ))

(define-bstruct SDL_MouseMotionEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (which uint32) ; SDL_MouseID
   (state uint32) ; SDL_MouseButtonFlags
   (x float)
   (y float)
   (xrel float)
   (yrel float)))

(define-bstruct SDL_MouseButtonEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (which uint32) ; SDL_MouseID
   (button uint8)
   (down uint8) ; bool
   (clicks uint8)
   (_ uint8)
   (x float)
   (y float)))

(define-bstruct SDL_MouseWheelEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (which uint32) ; SDL_MouseID
   (x float)
   (y float)
   (direction int) ; SDL_MouseWheelDirection
   (mouse_x float)
   (mouse_y float)))

(define-bstruct SDL_JoyAxisEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_JoystickID
   (axis uint8)
   (_ uint8)
   (_ uint8)
   (_ uint8)
   (value int16)
   (_ uint16)))

(define-bstruct SDL_JoyBallEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_JoystickID
   (ball uint8)
   (_ uint8)
   (_ uint8)
   (_ uint8)
   (xrel int32)
   (yrel int32)))

(define-bstruct SDL_JoyHatEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_JoystickID
   (hat uint8)
   (value uint8)
   (_ uint8)
   (_ uint8)))

(define-bstruct SDL_JoyButtonEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_JoystickID
   (button uint8)
   (down uint8) ; bool
   (_ uint8)
   (_ uint8)
   ))

(define-bstruct SDL_JoyDeviceEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_JoystickID
   ))

(define-bstruct SDL_JoyBatteryEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_JoystickID
   (state int) ; SDL_PowerState
   (percent int)))

(define-bstruct SDL_GamepadAxisEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_JoystickID
   (axis uint8)
   (_ uint8)
   (_ uint8)
   (_ uint8)
   (value int16)
   (_ uint16)))

(define-bstruct SDL_GamepadButtonEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_JoystickID
   (button uint8)
   (down uint8) ; bool
   (_ uint8)
   (_ uint8)))

(define-bstruct SDL_GamepadDeviceEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_JoystickID
   ))

(define-bstruct SDL_GamepadTouchpadEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_JoystickID
   (touchpad int32)
   (finger int32)
   (x float)
   (y float)
   (pressure float)))

(define-bstruct SDL_GamepadSensorEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_JoystickID
   (sensor int32)
   (data (array 3 float))
   (sensor_timestamp uint64)))

(define-bstruct SDL_AudioDeviceEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_AudioDeviceID
   (recording uint8) ; bool
   (_ uint8)
   (_ uint8)
   (_ uint8)))

(define-bstruct SDL_CameraDeviceEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_CameraID
   ))

(define-bstruct SDL_TouchFingerEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (touchID uint32) ; SDL_TouchID
   (fingerID uint32) ; SDL_FingerID
   (x float)
   (y float)
   (dx float)
   (dy float)
   (pressure float)
   (windowID uint32) ; SDL_WindowID
   ))

(define-bstruct SDL_PenProximityEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (which uint32) ; SDL_PenID
   ))

(define-bstruct SDL_PenMotionEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (which uint32) ; SDL_PenID
   (pen_state uint32) ; SDL_PenInputFlags
   ))

(define-bstruct SDL_PenTouchEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (which uint32) ; SDL_PenID
   (pen_state uint32) ; SDL_PenInputFlags
   (x float)
   (y float)
   (eraser uint8) ; bool
   (down uint8) ; bool
   ))

(define-bstruct SDL_PenButtonEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (which uint32) ; SDL_PenID
   (pen_state uint32) ; SDL_PenInputFlags
   (x float)
   (y float)
   (button uint8)
   (down uint8) ; bool
   ))

(define-bstruct SDL_PenAxisEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32)                       ; SDL_WindowID
   (which uint32)                          ; SDL_PenID
   (pen_state uint32)                      ; SDL_PenInputFlags
   (x float)
   (y float)
   (axis int)                           ; SDL_PenAxis
   (value float)))

(define-bstruct SDL_DropEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (x float)
   (y float)
   (source (* uint8)) ; char*
   (data (* uint8)) ; char*
   ))

(define-bstruct SDL_ClipboardEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)))

(define-bstruct SDL_SensorEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (which uint32) ; SDL_SensorID
   (data (array 6 float))
   (sensor_timestamp uint64)))

(define-bstruct SDL_QuitEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)))

(define-bstruct SDL_UserEvent
  (struct
   (type uint32)
   (reserved uint32)
   (timestamp uint64)
   (windowID uint32) ; SDL_WindowID
   (code int32)
   (data1 (* void))
   (data2 (* void))))

(define-bstruct SDL_Event
  (union
   (type uint32)
   (common SDL_CommonEvent)
   (display SDL_DisplayEvent)
   (window SDL_WindowEvent)
   (kdevice SDL_KeyboardDeviceEvent)
   (key SDL_KeyboardEvent)
   (edit SDL_TextEditingEvent)
   (edit_candidates SDL_TextEditingCandidatesEvent)
   (text SDL_TextInputEvent)
   (mdevice SDL_MouseDeviceEvent)
   (motion SDL_MouseMotionEvent)
   (button SDL_MouseButtonEvent)
   (wheel SDL_MouseWheelEvent)
   (jdevice SDL_JoyDeviceEvent)
   (jaxis SDL_JoyAxisEvent)
   (jball SDL_JoyBallEvent)
   (jhat SDL_JoyHatEvent)
   (jbutton SDL_JoyButtonEvent)
   (jbattery SDL_JoyBatteryEvent)
   (gdevice SDL_GamepadDeviceEvent)
   (gaxis SDL_GamepadAxisEvent)
   (gbutton SDL_GamepadButtonEvent)
   (gtouchpad SDL_GamepadTouchpadEvent)
   (gsensor SDL_GamepadSensorEvent)
   (adevice SDL_AudioDeviceEvent)
   (cdevice SDL_CameraDeviceEvent)
   (sensor SDL_SensorEvent)
   (quit SDL_QuitEvent)
   (user SDL_UserEvent)
   (tfinger SDL_TouchFingerEvent)
   (pproximity SDL_PenProximityEvent)
   (ptouch SDL_PenTouchEvent)
   (pmotion SDL_PenMotionEvent)
   (pbutton SDL_PenButtonEvent)
   (paxis SDL_PenAxisEvent)
   (drop SDL_DropEvent)
   (clipboard SDL_ClipboardEvent)
   (_ (array 128 uint8))))

(define-sdl SDL_PumpEvents)
;; SDL_PeepEvents
(define-sdl SDL_HasEvent uint32 -> bool)
(define-sdl SDL_HasEvents uint32 uint32 -> bool)
(define-sdl SDL_FlushEvent uint32)
(define-sdl SDL_FlushEvents uint32 uint32)
(define-sdl SDL_PollEvent '* -> bool)
(define-sdl SDL_WaitEvent '* -> bool)
(define-sdl SDL_WaitEventTimeout '* int32 -> bool)
(define-sdl SDL_PushEvent '* -> bool)
;; SDL_SetEventFilter
;; SDL_GetEventFilter
;; SDL_AddEventWatch
;; SDL_RemoveEventWatch
;; SDL_FilterEvents
;; SDL_SetEventEnabled
;; SDL_EventEnabled
;; SDL_RegisterEvents
;; SDL_GetWindowFromEvent