Add event bindings.

So far, only window and keyboard events are handled.  More to come in
future patches.

This patch adds a *ton* of constants that I'm not going to mention in
this log because it would be too damn long.

* sdl2/bindings.scm (sdl-poll-event): New procedure.
* sdl2/events.scm: New file.
* Makefile.am (SOURCES): Add it.

1 files changed, 673 insertions, 0 deletions

diff --git a/sdl2/events.scm b/sdl2/events.scm
new file mode 100644
index 0000000..ad798a8
--- /dev/null
+++ b/sdl2/events.scm
@@ -0,0 +1,673 @@
+;;; guile-sdl2 --- FFI bindings for SDL2
+;;; Copyright © 2015 David Thompson <davet@gnu.org>
+;;;
+;;; This file is part of guile-sdl2.
+;;;
+;;; Guile-sdl2 is free software; you can redistribute it and/or modify
+;;; it under the terms of the GNU Lesser General Public License as
+;;; published by the Free Software Foundation; either version 3 of the
+;;; License, or (at your option) any later version.
+;;;
+;;; Guile-sdl2 is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;; General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Lesser General Public
+;;; License along with guile-sdl2.  If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; SDL event handling.
+;;
+;;; Code:
+
+(define-module (sdl2 events)
+  #:use-module (ice-9 hash-table)
+  #:use-module (ice-9 match)
+  #:use-module (rnrs bytevectors)
+  #:use-module (srfi srfi-1)
+  #:use-module (srfi srfi-4)
+  #:use-module (srfi srfi-9)
+  #:use-module (system foreign)
+  #:use-module ((sdl2 bindings) #:prefix ffi:)
+  #:use-module (sdl2)
+  #:export (make-window-event
+            window-event?
+            window-event-timestamp
+            window-event-window-id
+            window-event-type
+            window-event-vector
+
+            make-keyboard-event
+            keyboard-event?
+            keyboard-event-timestamp
+            keyboard-event-window-id
+            keyboard-event-pressed?
+            keyboard-event-repeat
+            keyboard-event-keysym
+
+            poll-event))
+
+(define (make-sdl-event)
+  (make-u8vector 56 0)) ; sizeof(SDL_Event) is 56
+
+(define (sdl-event-type event)
+  (u32vector-ref event 0))
+
+
+;;;
+;;; Window
+;;;
+
+(define-record-type <window-event>
+  (make-window-event timestamp window-id type vector)
+  window-event?
+  (timestamp window-event timestamp)
+  (window-id window-event-window-id)
+  (type window-event-type)
+  (vector window-event-vector))
+
+(define (parse-window-event ptr)
+  (define (type-symbol n)
+    (list-ref '(none
+                shown
+                hidden
+                exposed
+                moved
+                resized
+                size-changed
+                minimized
+                maximized
+                restored
+                enter
+                leave
+                focus-gained
+                focus-lost
+                close)
+              n))
+
+  (define types
+    (list uint32  ; type
+          uint32  ; timestamp
+          uint32  ; windowID
+          uint8   ; event
+          uint8   ; padding1
+          uint8   ; padding2
+          uint8   ; padding3
+          int32   ; data1
+          int32)) ; data2
+
+  (match (parse-c-struct ptr types)
+    ((_ timestamp id event _ _ _ data1 data2)
+     (make-window-event timestamp id (type-symbol event) (cons data1 data2)))))
+
+
+;;;
+;;; Keyboard
+;;;
+
+(define-record-type <keyboard-event>
+  (make-keyboard-event timestamp window-id pressed? repeat
+                       key scancode modifiers)
+  keyboard-event?
+  (timestamp keyboard-event-timestamp)
+  (window-id keyboard-event-window-id)
+  (pressed? keyboard-event-pressed?)
+  (repeat keyboard-event-repeat)
+  (key keyboard-event-key)
+  (scancode keyboard-event-scancode)
+  (modifiers keyboard-event-modifiers))
+
+(define keycode-map
+  (alist->hash-table
+   `((,ffi:SDLK_UNKNOWN . unknown)
+     (,ffi:SDLK_RETURN . return)
+     (,ffi:SDLK_ESCAPE . escape)
+     (,ffi:SDLK_BACKSPACE . backspace)
+     (,ffi:SDLK_TAB . tab)
+     (,ffi:SDLK_SPACE . space)
+     (,ffi:SDLK_EXCLAIM . exclaim)
+     (,ffi:SDLK_QUOTEDBL . double-quote)
+     (,ffi:SDLK_HASH . hash)
+     (,ffi:SDLK_PERCENT . percent)
+     (,ffi:SDLK_DOLLAR . dollar)
+     (,ffi:SDLK_AMPERSAND . ampersand)
+     (,ffi:SDLK_QUOTE . quote)
+     (,ffi:SDLK_LEFTPAREN . left-paren)
+     (,ffi:SDLK_RIGHTPAREN . right-paren)
+     (,ffi:SDLK_ASTERISK . asterisk)
+     (,ffi:SDLK_PLUS . plus)
+     (,ffi:SDLK_COMMA . comma)
+     (,ffi:SDLK_MINUS . minus)
+     (,ffi:SDLK_PERIOD . period)
+     (,ffi:SDLK_SLASH . slash)
+     (,ffi:SDLK_0 . 0)
+     (,ffi:SDLK_1 . 1)
+     (,ffi:SDLK_2 . 2)
+     (,ffi:SDLK_3 . 3)
+     (,ffi:SDLK_4 . 4)
+     (,ffi:SDLK_5 . 5)
+     (,ffi:SDLK_6 . 6)
+     (,ffi:SDLK_7 . 7)
+     (,ffi:SDLK_8 . 8)
+     (,ffi:SDLK_9 . 9)
+     (,ffi:SDLK_COLON . colon)
+     (,ffi:SDLK_SEMICOLON . semicolon)
+     (,ffi:SDLK_LESS . less)
+     (,ffi:SDLK_EQUALS . equals)
+     (,ffi:SDLK_GREATER . greater)
+     (,ffi:SDLK_QUESTION . question)
+     (,ffi:SDLK_AT . at)
+     (,ffi:SDLK_LEFTBRACKET . left-bracket)
+     (,ffi:SDLK_BACKSLASH . backslash)
+     (,ffi:SDLK_RIGHTBRACKET . right-bracket)
+     (,ffi:SDLK_CARET . caret)
+     (,ffi:SDLK_UNDERSCORE . underscore)
+     (,ffi:SDLK_BACKQUOTE . backquote)
+     (,ffi:SDLK_a . a)
+     (,ffi:SDLK_b . b)
+     (,ffi:SDLK_c . c)
+     (,ffi:SDLK_d . d)
+     (,ffi:SDLK_e . e)
+     (,ffi:SDLK_f . f)
+     (,ffi:SDLK_g . g)
+     (,ffi:SDLK_h . h)
+     (,ffi:SDLK_i . i)
+     (,ffi:SDLK_j . j)
+     (,ffi:SDLK_k . k)
+     (,ffi:SDLK_l . l)
+     (,ffi:SDLK_m . m)
+     (,ffi:SDLK_n . n)
+     (,ffi:SDLK_o . o)
+     (,ffi:SDLK_p . p)
+     (,ffi:SDLK_q . q)
+     (,ffi:SDLK_r . r)
+     (,ffi:SDLK_s . s)
+     (,ffi:SDLK_t . t)
+     (,ffi:SDLK_u . u)
+     (,ffi:SDLK_v . v)
+     (,ffi:SDLK_w . w)
+     (,ffi:SDLK_x . x)
+     (,ffi:SDLK_y . y)
+     (,ffi:SDLK_z . z)
+     (,ffi:SDLK_CAPSLOCK . caps-lock)
+     (,ffi:SDLK_F1 . f1)
+     (,ffi:SDLK_F2 . f2)
+     (,ffi:SDLK_F3 . f3)
+     (,ffi:SDLK_F4 . f4)
+     (,ffi:SDLK_F5 . f5)
+     (,ffi:SDLK_F6 . f6)
+     (,ffi:SDLK_F7 . f7)
+     (,ffi:SDLK_F8 . f8)
+     (,ffi:SDLK_F9 . f9)
+     (,ffi:SDLK_F10 . f10)
+     (,ffi:SDLK_F11 . f11)
+     (,ffi:SDLK_F12 . f12)
+     (,ffi:SDLK_PRINTSCREEN . print-screen)
+     (,ffi:SDLK_SCROLLLOCK . scroll-lock)
+     (,ffi:SDLK_PAUSE . pause)
+     (,ffi:SDLK_INSERT . insert)
+     (,ffi:SDLK_HOME . home)
+     (,ffi:SDLK_PAGEUP . page-up)
+     (,ffi:SDLK_DELETE . delete)
+     (,ffi:SDLK_END . end)
+     (,ffi:SDLK_PAGEDOWN . page-down)
+     (,ffi:SDLK_RIGHT . right)
+     (,ffi:SDLK_LEFT . left)
+     (,ffi:SDLK_DOWN . down)
+     (,ffi:SDLK_UP . up)
+     (,ffi:SDLK_NUMLOCKCLEAR . num-lock-clear)
+     (,ffi:SDLK_KP_DIVIDE . keypad-divide)
+     (,ffi:SDLK_KP_MULTIPLY . keypad-multiply)
+     (,ffi:SDLK_KP_MINUS . keypad-minus)
+     (,ffi:SDLK_KP_PLUS . keypad-plus)
+     (,ffi:SDLK_KP_ENTER . keypad-enter)
+     (,ffi:SDLK_KP_1 . keypad-1)
+     (,ffi:SDLK_KP_2 . keypad-2)
+     (,ffi:SDLK_KP_3 . keypad-3)
+     (,ffi:SDLK_KP_4 . keypad-4)
+     (,ffi:SDLK_KP_5 . keypad-5)
+     (,ffi:SDLK_KP_6 . keypad-6)
+     (,ffi:SDLK_KP_7 . keypad-7)
+     (,ffi:SDLK_KP_8 . keypad-8)
+     (,ffi:SDLK_KP_9 . keypad-9)
+     (,ffi:SDLK_KP_0 . keypad-0)
+     (,ffi:SDLK_KP_PERIOD . keypad-period)
+     (,ffi:SDLK_APPLICATION . application)
+     (,ffi:SDLK_POWER . power)
+     (,ffi:SDLK_KP_EQUALS . keypad-equals)
+     (,ffi:SDLK_F13 . f13)
+     (,ffi:SDLK_F14 . f14)
+     (,ffi:SDLK_F15 . f15)
+     (,ffi:SDLK_F16 . f16)
+     (,ffi:SDLK_F17 . f17)
+     (,ffi:SDLK_F18 . f18)
+     (,ffi:SDLK_F19 . f19)
+     (,ffi:SDLK_F20 . f20)
+     (,ffi:SDLK_F21 . f21)
+     (,ffi:SDLK_F22 . f22)
+     (,ffi:SDLK_F23 . f23)
+     (,ffi:SDLK_F24 . f24)
+     (,ffi:SDLK_EXECUTE . execute)
+     (,ffi:SDLK_HELP . help)
+     (,ffi:SDLK_MENU . menu)
+     (,ffi:SDLK_SELECT . select)
+     (,ffi:SDLK_STOP . stop)
+     (,ffi:SDLK_AGAIN . again)
+     (,ffi:SDLK_UNDO . undo)
+     (,ffi:SDLK_CUT . cut)
+     (,ffi:SDLK_COPY . copy)
+     (,ffi:SDLK_PASTE . paste)
+     (,ffi:SDLK_FIND . find)
+     (,ffi:SDLK_MUTE . mute)
+     (,ffi:SDLK_VOLUMEUP . volume-up)
+     (,ffi:SDLK_VOLUMEDOWN . volume-down)
+     (,ffi:SDLK_KP_COMMA . keypad-comma)
+     (,ffi:SDLK_KP_EQUALSAS400 . keypad-equalsas400)
+     (,ffi:SDLK_ALTERASE . alt-erase)
+     (,ffi:SDLK_SYSREQ . sysreq)
+     (,ffi:SDLK_CANCEL . cancel)
+     (,ffi:SDLK_CLEAR . clear)
+     (,ffi:SDLK_PRIOR . prior)
+     (,ffi:SDLK_RETURN2 . return-2)
+     (,ffi:SDLK_SEPARATOR . separator)
+     (,ffi:SDLK_OUT . out)
+     (,ffi:SDLK_OPER . oper)
+     (,ffi:SDLK_CLEARAGAIN . clear-again)
+     (,ffi:SDLK_CRSEL . crsel)
+     (,ffi:SDLK_EXSEL . exsel)
+     (,ffi:SDLK_KP_00 . keypad-00)
+     (,ffi:SDLK_KP_000 . keypad-000)
+     (,ffi:SDLK_THOUSANDSSEPARATOR . thousands-separator)
+     (,ffi:SDLK_DECIMALSEPARATOR . decimal-separator)
+     (,ffi:SDLK_CURRENCYUNIT . currency-unit)
+     (,ffi:SDLK_CURRENCYSUBUNIT . currency-subunit)
+     (,ffi:SDLK_KP_LEFTPAREN . keypad-left-paren)
+     (,ffi:SDLK_KP_RIGHTPAREN . keypad-right-paren)
+     (,ffi:SDLK_KP_LEFTBRACE . keypad-left-brace)
+     (,ffi:SDLK_KP_RIGHTBRACE . keypad-right-brace)
+     (,ffi:SDLK_KP_TAB . keypad-tab)
+     (,ffi:SDLK_KP_BACKSPACE . keypad-backspace)
+     (,ffi:SDLK_KP_A . keypad-a)
+     (,ffi:SDLK_KP_B . keypad-b)
+     (,ffi:SDLK_KP_C . keypad-c)
+     (,ffi:SDLK_KP_D . keypad-d)
+     (,ffi:SDLK_KP_E . keypad-e)
+     (,ffi:SDLK_KP_F . keypad-f)
+     (,ffi:SDLK_KP_XOR . keypad-xor)
+     (,ffi:SDLK_KP_POWER . keypad-power)
+     (,ffi:SDLK_KP_PERCENT . keypad-percent)
+     (,ffi:SDLK_KP_LESS . keypad-less)
+     (,ffi:SDLK_KP_GREATER . keypad-greater)
+     (,ffi:SDLK_KP_AMPERSAND . keypad-ampersand)
+     (,ffi:SDLK_KP_DBLAMPERSAND . keypad-double-ampersand)
+     (,ffi:SDLK_KP_VERTICALBAR . keypad-vertical-bar)
+     (,ffi:SDLK_KP_DBLVERTICALBAR . keypad-double-vertical-bar)
+     (,ffi:SDLK_KP_COLON . keypad-colon)
+     (,ffi:SDLK_KP_HASH . keypad-hash)
+     (,ffi:SDLK_KP_SPACE . keypad-space)
+     (,ffi:SDLK_KP_AT . keypad-at)
+     (,ffi:SDLK_KP_EXCLAM . keypad-exclam)
+     (,ffi:SDLK_KP_MEMSTORE . keypad-mem-store)
+     (,ffi:SDLK_KP_MEMRECALL . keypad-mem-recall)
+     (,ffi:SDLK_KP_MEMCLEAR . keypad-mem-clear)
+     (,ffi:SDLK_KP_MEMADD . keypad-mem-add)
+     (,ffi:SDLK_KP_MEMSUBTRACT . keypad-mem-subtract)
+     (,ffi:SDLK_KP_MEMMULTIPLY . keypad-mem-multiply)
+     (,ffi:SDLK_KP_MEMDIVIDE . keypad-mem-divide)
+     (,ffi:SDLK_KP_PLUSMINUS . keypad-plus-minus)
+     (,ffi:SDLK_KP_CLEAR . keypad-clear)
+     (,ffi:SDLK_KP_CLEARENTRY . keypad-clear-entry)
+     (,ffi:SDLK_KP_BINARY . keypad-binary)
+     (,ffi:SDLK_KP_OCTAL . keypad-octal)
+     (,ffi:SDLK_KP_DECIMAL . keypad-decimal)
+     (,ffi:SDLK_KP_HEXADECIMAL . keypad-hexadecimal)
+     (,ffi:SDLK_LCTRL . left-control)
+     (,ffi:SDLK_LSHIFT . left-shift)
+     (,ffi:SDLK_LALT . left-alt)
+     (,ffi:SDLK_LGUI . left-gui)
+     (,ffi:SDLK_RCTRL . right-control)
+     (,ffi:SDLK_RSHIFT . right-shift)
+     (,ffi:SDLK_RALT . right-alt)
+     (,ffi:SDLK_RGUI . right-gui)
+     (,ffi:SDLK_MODE . mode)
+     (,ffi:SDLK_AUDIONEXT . audio-next)
+     (,ffi:SDLK_AUDIOPREV . audio-prev)
+     (,ffi:SDLK_AUDIOSTOP . audio-stop)
+     (,ffi:SDLK_AUDIOPLAY . audio-play)
+     (,ffi:SDLK_AUDIOMUTE . audio-mute)
+     (,ffi:SDLK_MEDIASELECT . media-select)
+     (,ffi:SDLK_WWW . www)
+     (,ffi:SDLK_MAIL . mail)
+     (,ffi:SDLK_CALCULATOR . calculator)
+     (,ffi:SDLK_COMPUTER . computer)
+     (,ffi:SDLK_AC_SEARCH . ac-search)
+     (,ffi:SDLK_AC_HOME . ac-home)
+     (,ffi:SDLK_AC_BACK . ac-back)
+     (,ffi:SDLK_AC_FORWARD . ac-forward)
+     (,ffi:SDLK_AC_STOP . ac-stop)
+     (,ffi:SDLK_AC_REFRESH . ac-refresh)
+     (,ffi:SDLK_AC_BOOKMARKS . ac-bookmarks)
+     (,ffi:SDLK_BRIGHTNESSDOWN . brightness-down)
+     (,ffi:SDLK_BRIGHTNESSUP . brightness-up)
+     (,ffi:SDLK_DISPLAYSWITCH . display-switch)
+     (,ffi:SDLK_KBDILLUMTOGGLE . keyboard-illum-toggle)
+     (,ffi:SDLK_KBDILLUMDOWN . keyboard-illum-down)
+     (,ffi:SDLK_KBDILLUMUP . keyboard-illum-up)
+     (,ffi:SDLK_EJECT . eject)
+     (,ffi:SDLK_SLEEP . sleep))))
+
+(define scancode-map
+  (alist->hash-table
+   `((,ffi:SDL_SCANCODE_UNKNOWN . unknown)
+     (,ffi:SDL_SCANCODE_A . a)
+     (,ffi:SDL_SCANCODE_B . b)
+     (,ffi:SDL_SCANCODE_C . c)
+     (,ffi:SDL_SCANCODE_D . d)
+     (,ffi:SDL_SCANCODE_E . e)
+     (,ffi:SDL_SCANCODE_F . f)
+     (,ffi:SDL_SCANCODE_G . g)
+     (,ffi:SDL_SCANCODE_H . h)
+     (,ffi:SDL_SCANCODE_I . i)
+     (,ffi:SDL_SCANCODE_J . j)
+     (,ffi:SDL_SCANCODE_K . k)
+     (,ffi:SDL_SCANCODE_L . l)
+     (,ffi:SDL_SCANCODE_M . m)
+     (,ffi:SDL_SCANCODE_N . n)
+     (,ffi:SDL_SCANCODE_O . o)
+     (,ffi:SDL_SCANCODE_P . p)
+     (,ffi:SDL_SCANCODE_Q . q)
+     (,ffi:SDL_SCANCODE_R . r)
+     (,ffi:SDL_SCANCODE_S . s)
+     (,ffi:SDL_SCANCODE_T . t)
+     (,ffi:SDL_SCANCODE_U . u)
+     (,ffi:SDL_SCANCODE_V . v)
+     (,ffi:SDL_SCANCODE_W . w)
+     (,ffi:SDL_SCANCODE_X . x)
+     (,ffi:SDL_SCANCODE_Y . y)
+     (,ffi:SDL_SCANCODE_Z . z)
+     (,ffi:SDL_SCANCODE_1 . 1)
+     (,ffi:SDL_SCANCODE_2 . 2)
+     (,ffi:SDL_SCANCODE_3 . 3)
+     (,ffi:SDL_SCANCODE_4 . 4)
+     (,ffi:SDL_SCANCODE_5 . 5)
+     (,ffi:SDL_SCANCODE_6 . 6)
+     (,ffi:SDL_SCANCODE_7 . 7)
+     (,ffi:SDL_SCANCODE_8 . 8)
+     (,ffi:SDL_SCANCODE_9 . 9)
+     (,ffi:SDL_SCANCODE_0 . 0)
+     (,ffi:SDL_SCANCODE_RETURN . return)
+     (,ffi:SDL_SCANCODE_ESCAPE . escape)
+     (,ffi:SDL_SCANCODE_BACKSPACE . backspace)
+     (,ffi:SDL_SCANCODE_TAB . tab)
+     (,ffi:SDL_SCANCODE_SPACE . space)
+     (,ffi:SDL_SCANCODE_MINUS . minus)
+     (,ffi:SDL_SCANCODE_EQUALS . equals)
+     (,ffi:SDL_SCANCODE_LEFTBRACKET . left-bracket)
+     (,ffi:SDL_SCANCODE_RIGHTBRACKET . right-bracket)
+     (,ffi:SDL_SCANCODE_BACKSLASH . backslash)
+     (,ffi:SDL_SCANCODE_NONUSHASH . nonushash)
+     (,ffi:SDL_SCANCODE_SEMICOLON . semicolon)
+     (,ffi:SDL_SCANCODE_APOSTROPHE . apostrophe)
+     (,ffi:SDL_SCANCODE_GRAVE . grave)
+     (,ffi:SDL_SCANCODE_COMMA . comma)
+     (,ffi:SDL_SCANCODE_PERIOD . period)
+     (,ffi:SDL_SCANCODE_SLASH . slash)
+     (,ffi:SDL_SCANCODE_CAPSLOCK . caps-lock)
+     (,ffi:SDL_SCANCODE_F1 . f1)
+     (,ffi:SDL_SCANCODE_F2 . f2)
+     (,ffi:SDL_SCANCODE_F3 . f3)
+     (,ffi:SDL_SCANCODE_F4 . f4)
+     (,ffi:SDL_SCANCODE_F5 . f5)
+     (,ffi:SDL_SCANCODE_F6 . f6)
+     (,ffi:SDL_SCANCODE_F7 . f7)
+     (,ffi:SDL_SCANCODE_F8 . f8)
+     (,ffi:SDL_SCANCODE_F9 . f9)
+     (,ffi:SDL_SCANCODE_F10 . f10)
+     (,ffi:SDL_SCANCODE_F11 . f11)
+     (,ffi:SDL_SCANCODE_F12 . f12)
+     (,ffi:SDL_SCANCODE_PRINTSCREEN . print-screen)
+     (,ffi:SDL_SCANCODE_SCROLLLOCK . scroll-lock)
+     (,ffi:SDL_SCANCODE_PAUSE . pause)
+     (,ffi:SDL_SCANCODE_INSERT . insert)
+     (,ffi:SDL_SCANCODE_HOME . home)
+     (,ffi:SDL_SCANCODE_PAGEUP . page-up)
+     (,ffi:SDL_SCANCODE_DELETE . delete)
+     (,ffi:SDL_SCANCODE_END . end)
+     (,ffi:SDL_SCANCODE_PAGEDOWN . page-down)
+     (,ffi:SDL_SCANCODE_RIGHT . right)
+     (,ffi:SDL_SCANCODE_LEFT . left)
+     (,ffi:SDL_SCANCODE_DOWN . down)
+     (,ffi:SDL_SCANCODE_UP . up)
+     (,ffi:SDL_SCANCODE_NUMLOCKCLEAR . num-lock-clear)
+     (,ffi:SDL_SCANCODE_KP_DIVIDE . keypad-divide)
+     (,ffi:SDL_SCANCODE_KP_MULTIPLY . keypad-multiply)
+     (,ffi:SDL_SCANCODE_KP_MINUS . keypad-minus)
+     (,ffi:SDL_SCANCODE_KP_PLUS . keypad-plus)
+     (,ffi:SDL_SCANCODE_KP_ENTER . keypad-enter)
+     (,ffi:SDL_SCANCODE_KP_1 . keypad-1)
+     (,ffi:SDL_SCANCODE_KP_2 . keypad-2)
+     (,ffi:SDL_SCANCODE_KP_3 . keypad-3)
+     (,ffi:SDL_SCANCODE_KP_4 . keypad-4)
+     (,ffi:SDL_SCANCODE_KP_5 . keypad-5)
+     (,ffi:SDL_SCANCODE_KP_6 . keypad-6)
+     (,ffi:SDL_SCANCODE_KP_7 . keypad-7)
+     (,ffi:SDL_SCANCODE_KP_8 . keypad-8)
+     (,ffi:SDL_SCANCODE_KP_9 . keypad-9)
+     (,ffi:SDL_SCANCODE_KP_0 . keypad-0)
+     (,ffi:SDL_SCANCODE_KP_PERIOD . keypad-period)
+     (,ffi:SDL_SCANCODE_NONUSBACKSLASH . nonusbackslash)
+     (,ffi:SDL_SCANCODE_APPLICATION . application)
+     (,ffi:SDL_SCANCODE_POWER . power)
+     (,ffi:SDL_SCANCODE_KP_EQUALS . keypad-equals)
+     (,ffi:SDL_SCANCODE_F13 . f13)
+     (,ffi:SDL_SCANCODE_F14 . f14)
+     (,ffi:SDL_SCANCODE_F15 . f15)
+     (,ffi:SDL_SCANCODE_F16 . f16)
+     (,ffi:SDL_SCANCODE_F17 . f17)
+     (,ffi:SDL_SCANCODE_F18 . f18)
+     (,ffi:SDL_SCANCODE_F19 . f19)
+     (,ffi:SDL_SCANCODE_F20 . f20)
+     (,ffi:SDL_SCANCODE_F21 . f21)
+     (,ffi:SDL_SCANCODE_F22 . f22)
+     (,ffi:SDL_SCANCODE_F23 . f23)
+     (,ffi:SDL_SCANCODE_F24 . f24)
+     (,ffi:SDL_SCANCODE_EXECUTE . execute)
+     (,ffi:SDL_SCANCODE_HELP . help)
+     (,ffi:SDL_SCANCODE_MENU . menu)
+     (,ffi:SDL_SCANCODE_SELECT . select)
+     (,ffi:SDL_SCANCODE_STOP . stop)
+     (,ffi:SDL_SCANCODE_AGAIN . again)
+     (,ffi:SDL_SCANCODE_UNDO . undo)
+     (,ffi:SDL_SCANCODE_CUT . cut)
+     (,ffi:SDL_SCANCODE_COPY . copy)
+     (,ffi:SDL_SCANCODE_PASTE . paste)
+     (,ffi:SDL_SCANCODE_FIND . find)
+     (,ffi:SDL_SCANCODE_MUTE . mute)
+     (,ffi:SDL_SCANCODE_VOLUMEUP . volume-up)
+     (,ffi:SDL_SCANCODE_VOLUMEDOWN . volume-down)
+     (,ffi:SDL_SCANCODE_KP_COMMA . keypad-comma)
+     (,ffi:SDL_SCANCODE_KP_EQUALSAS400 . keypad-equalsas400)
+     (,ffi:SDL_SCANCODE_INTERNATIONAL1 . international-1)
+     (,ffi:SDL_SCANCODE_INTERNATIONAL2 . international-2)
+     (,ffi:SDL_SCANCODE_INTERNATIONAL3 . international-3)
+     (,ffi:SDL_SCANCODE_INTERNATIONAL4 . international-4)
+     (,ffi:SDL_SCANCODE_INTERNATIONAL5 . international-5)
+     (,ffi:SDL_SCANCODE_INTERNATIONAL6 . international-6)
+     (,ffi:SDL_SCANCODE_INTERNATIONAL7 . international-7)
+     (,ffi:SDL_SCANCODE_INTERNATIONAL8 . international-8)
+     (,ffi:SDL_SCANCODE_INTERNATIONAL9 . international-9)
+     (,ffi:SDL_SCANCODE_LANG1 . lang-1)
+     (,ffi:SDL_SCANCODE_LANG2 . lang-2)
+     (,ffi:SDL_SCANCODE_LANG3 . lang-3)
+     (,ffi:SDL_SCANCODE_LANG4 . lang-4)
+     (,ffi:SDL_SCANCODE_LANG5 . lang-5)
+     (,ffi:SDL_SCANCODE_LANG6 . lang-6)
+     (,ffi:SDL_SCANCODE_LANG7 . lang-7)
+     (,ffi:SDL_SCANCODE_LANG8 . lang-8)
+     (,ffi:SDL_SCANCODE_LANG9 . lang-9)
+     (,ffi:SDL_SCANCODE_ALTERASE . alt-erase)
+     (,ffi:SDL_SCANCODE_SYSREQ . sysreq)
+     (,ffi:SDL_SCANCODE_CANCEL . cancel)
+     (,ffi:SDL_SCANCODE_CLEAR . clear)
+     (,ffi:SDL_SCANCODE_PRIOR . prior)
+     (,ffi:SDL_SCANCODE_RETURN2 . return-2)
+     (,ffi:SDL_SCANCODE_SEPARATOR . separator)
+     (,ffi:SDL_SCANCODE_OUT . out)
+     (,ffi:SDL_SCANCODE_OPER . oper)
+     (,ffi:SDL_SCANCODE_CLEARAGAIN . clear-again)
+     (,ffi:SDL_SCANCODE_CRSEL . crsel)
+     (,ffi:SDL_SCANCODE_EXSEL . exsel)
+     (,ffi:SDL_SCANCODE_KP_00 . keypad-00)
+     (,ffi:SDL_SCANCODE_KP_000 . keypad-000)
+     (,ffi:SDL_SCANCODE_THOUSANDSSEPARATOR . thousands-separator)
+     (,ffi:SDL_SCANCODE_DECIMALSEPARATOR . decimal-separator)
+     (,ffi:SDL_SCANCODE_CURRENCYUNIT . currency-unit)
+     (,ffi:SDL_SCANCODE_CURRENCYSUBUNIT . current-subunit)
+     (,ffi:SDL_SCANCODE_KP_LEFTPAREN . keypad-left-paren)
+     (,ffi:SDL_SCANCODE_KP_RIGHTPAREN . keypad-right-paren)
+     (,ffi:SDL_SCANCODE_KP_LEFTBRACE . keypad-left-brace)
+     (,ffi:SDL_SCANCODE_KP_RIGHTBRACE . keypad-right-brace)
+     (,ffi:SDL_SCANCODE_KP_TAB . keypad-tab)
+     (,ffi:SDL_SCANCODE_KP_BACKSPACE . keypad-backspace)
+     (,ffi:SDL_SCANCODE_KP_A . keypad-a)
+     (,ffi:SDL_SCANCODE_KP_B . keypad-b)
+     (,ffi:SDL_SCANCODE_KP_C . keypad-c)
+     (,ffi:SDL_SCANCODE_KP_D . keypad-d)
+     (,ffi:SDL_SCANCODE_KP_E . keypad-e)
+     (,ffi:SDL_SCANCODE_KP_F . keypad-f)
+     (,ffi:SDL_SCANCODE_KP_XOR . keypad-xor)
+     (,ffi:SDL_SCANCODE_KP_POWER . keypad-power)
+     (,ffi:SDL_SCANCODE_KP_PERCENT . keypad-percent)
+     (,ffi:SDL_SCANCODE_KP_LESS . keypad-less)
+     (,ffi:SDL_SCANCODE_KP_GREATER . keypad-greater)
+     (,ffi:SDL_SCANCODE_KP_AMPERSAND . keypad-ampersand)
+     (,ffi:SDL_SCANCODE_KP_DBLAMPERSAND . keypad-double-ampersand)
+     (,ffi:SDL_SCANCODE_KP_VERTICALBAR . keypad-vertical-bar)
+     (,ffi:SDL_SCANCODE_KP_DBLVERTICALBAR . keypad-double-vertical-bar)
+     (,ffi:SDL_SCANCODE_KP_COLON . keypad-colon)
+     (,ffi:SDL_SCANCODE_KP_HASH . keypad-hash)
+     (,ffi:SDL_SCANCODE_KP_SPACE . keypad-space)
+     (,ffi:SDL_SCANCODE_KP_AT . keypad-at)
+     (,ffi:SDL_SCANCODE_KP_EXCLAM . keypad-exclam)
+     (,ffi:SDL_SCANCODE_KP_MEMSTORE . keypad-mem-store)
+     (,ffi:SDL_SCANCODE_KP_MEMRECALL . keypad-mem-recall)
+     (,ffi:SDL_SCANCODE_KP_MEMCLEAR . keypad-mem-clear)
+     (,ffi:SDL_SCANCODE_KP_MEMADD . keypad-mem-add)
+     (,ffi:SDL_SCANCODE_KP_MEMSUBTRACT . keypadd-mem-subtract)
+     (,ffi:SDL_SCANCODE_KP_MEMMULTIPLY . keypad-mem-multiply)
+     (,ffi:SDL_SCANCODE_KP_MEMDIVIDE . keypad-mem-divide)
+     (,ffi:SDL_SCANCODE_KP_PLUSMINUS . keypad-plus-minus)
+     (,ffi:SDL_SCANCODE_KP_CLEAR . keypad-clear)
+     (,ffi:SDL_SCANCODE_KP_CLEARENTRY . keypad-clear-entry)
+     (,ffi:SDL_SCANCODE_KP_BINARY . keypad-binary)
+     (,ffi:SDL_SCANCODE_KP_OCTAL . keypad-octal)
+     (,ffi:SDL_SCANCODE_KP_DECIMAL . keypad-decimal)
+     (,ffi:SDL_SCANCODE_KP_HEXADECIMAL . keypad-hexadecimal)
+     (,ffi:SDL_SCANCODE_LCTRL . left-control)
+     (,ffi:SDL_SCANCODE_LSHIFT . left-shift)
+     (,ffi:SDL_SCANCODE_LALT . left-alt)
+     (,ffi:SDL_SCANCODE_LGUI . left-gui)
+     (,ffi:SDL_SCANCODE_RCTRL . right-control)
+     (,ffi:SDL_SCANCODE_RSHIFT . right-shift)
+     (,ffi:SDL_SCANCODE_RALT . right-alt)
+     (,ffi:SDL_SCANCODE_RGUI . right-cui)
+     (,ffi:SDL_SCANCODE_MODE . mode)
+     (,ffi:SDL_SCANCODE_AUDIONEXT . audio-next)
+     (,ffi:SDL_SCANCODE_AUDIOPREV . audio-prev)
+     (,ffi:SDL_SCANCODE_AUDIOSTOP . audio-stop)
+     (,ffi:SDL_SCANCODE_AUDIOPLAY . audio-play)
+     (,ffi:SDL_SCANCODE_AUDIOMUTE . audio-mute)
+     (,ffi:SDL_SCANCODE_MEDIASELECT . media-select)
+     (,ffi:SDL_SCANCODE_WWW . www)
+     (,ffi:SDL_SCANCODE_MAIL . mail)
+     (,ffi:SDL_SCANCODE_CALCULATOR . calculator)
+     (,ffi:SDL_SCANCODE_COMPUTER . computer)
+     (,ffi:SDL_SCANCODE_AC_SEARCH . ac-search)
+     (,ffi:SDL_SCANCODE_AC_HOME . ac-home)
+     (,ffi:SDL_SCANCODE_AC_BACK . ac-back)
+     (,ffi:SDL_SCANCODE_AC_FORWARD . ac-forward)
+     (,ffi:SDL_SCANCODE_AC_STOP . ac-stop)
+     (,ffi:SDL_SCANCODE_AC_REFRESH . ac-refresh)
+     (,ffi:SDL_SCANCODE_AC_BOOKMARKS . ac-bookmarks)
+     (,ffi:SDL_SCANCODE_BRIGHTNESSDOWN . brightness-down)
+     (,ffi:SDL_SCANCODE_BRIGHTNESSUP . brightness-up)
+     (,ffi:SDL_SCANCODE_DISPLAYSWITCH . display-switch)
+     (,ffi:SDL_SCANCODE_KBDILLUMTOGGLE . keyboard-illum-toggle)
+     (,ffi:SDL_SCANCODE_KBDILLUMDOWN . keyboard-illum-down)
+     (,ffi:SDL_SCANCODE_KBDILLUMUP . keyboard-illum-up)
+     (,ffi:SDL_SCANCODE_EJECT . eject)
+     (,ffi:SDL_SCANCODE_SLEEP . sleep)
+     (,ffi:SDL_SCANCODE_APP1 . app-1)
+     (,ffi:SDL_SCANCODE_APP2 . app-2))))
+
+(define (parse-keyboard-event ptr)
+  (define types
+    (list uint32  ; type
+          uint32  ; timestamp
+          uint32  ; windowID
+          uint8   ; state
+          uint8   ; repeat
+          uint8   ; padding2
+          uint8   ; padding3
+          (list int       ; scancode
+                int       ; sym
+                uint16    ; mod
+                uint32))) ; unused
+
+  (define (mod->list mod)
+    (fold (lambda (pair prev)
+            (match pair
+              ((sym . bit)
+               (if (zero? (logand mod bit))
+                   prev
+                   (cons sym prev)))))
+          '()
+          `((left-shift    . ,ffi:KMOD_LSHIFT)
+            (right-shift   . ,ffi:KMOD_RSHIFT)
+            (left-control  . ,ffi:KMOD_LCTRL)
+            (right-control . ,ffi:KMOD_RCTRL)
+            (left-alt      . ,ffi:KMOD_LALT)
+            (right-alt     . ,ffi:KMOD_RALT)
+            (left-gui      . ,ffi:KMOD_LGUI)
+            (right-gui     . ,ffi:KMOD_RGUI)
+            (num-lock      . ,ffi:KMOD_NUM)
+            (caps-lock     . ,ffi:KMOD_CAPS)
+            (alt-gr        . ,ffi:KMOD_MODE))))
+
+  (define (keycode->symbol keycode)
+    (hash-ref keycode-map keycode))
+
+  (define (scancode->symbol scancode)
+    (hash-ref scancode-map scancode))
+
+  (match (parse-c-struct ptr types)
+    ((_ timestamp window-id state repeat _ _ (scancode sym mod _))
+     (make-keyboard-event timestamp
+                          window-id
+                          (= state ffi:SDL_PRESSED)
+                          repeat
+                          (keycode->symbol sym)
+                          (scancode->symbol scancode)
+                          (mod->list mod)))))
+
+
+;;;
+;;; Event management
+;;;
+
+(define (poll-event)
+  (let* ((e (make-sdl-event))
+         (ptr (bytevector->pointer e))
+         (result (ffi:sdl-poll-event ptr)))
+    (and (= result 1)
+         (let ((type (sdl-event-type e)))
+           (cond
+            ((= type ffi:SDL_WINDOWEVENT)
+             (parse-window-event ptr))
+            ((or (= type ffi:SDL_KEYDOWN)
+                 (= type ffi:SDL_KEYUP))
+             (parse-keyboard-event ptr))
+            (else 'fixme:unsupported-event))))))