key callbacks, tidy

CHANGELOG.md

@@ -9,7 +9,41 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/)
 ### Added
 
 - support for Windows
-- support for actually doing anything
+- native Wayland support
+
+### Removed
+
+- `C'u8` as an alias to `CChar`
+
+## [0.2.2] -- 2025-12-16
+
+### Added
+
+- enums `RGFW_keymod` and `RGFW_key` as `CUChar` aliases
+    - all variants bound as constants
+- `C'RGFW_bool` as `CUChar` alias. 0 is true, else is false
+- new callback
+    - `RGFW_keyfunc`
+- various new methods in `RGFW.hsc`
+    - `RGFW_window_setShouldClose`
+    - `RGFW_pollEvents`
+    - `RGFW_setKeyCallback`
+- key callback functionallity in demo application
+    - `esc` closes the window
+
+### Changed
+
+- modularized `hs-rgfw.cabal` for the sake of tidiness
+
+### Deprecated
+
+- `C'u8` as a type alias to `CChar`
+    - such declarations are needed in C but not in Haskell
+    - `CUChar` is the preferable type for cross-platform later
+
+### Fixed
+
+- correctly inherit `version` in `flake.nix`
 
 ## [0.2.1] -- 2025-12-16
 

flake.nix

@@ -8,7 +8,7 @@
     self,
     ...
   }: let
-    version = "0.2.1";
+    version = "0.2.2";
     package = {
       mkDerivation,
       base,
@@ -23,7 +23,7 @@
     }:
       mkDerivation {
         pname = "hs-rgfw";
-        version = "0.2.0";
+        inherit version;
         src = ./.;
         libraryHaskellDepends = [
           base

hs-rgfw.cabal

@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               hs-rgfw
-version:            0.2.1
+version:            0.2.2
 homepage:           https://git.mtgmonkey.net/Andromeda/hs-rgfw
 license:            BSD-3-Clause
 license-file:       LICENSE
@@ -13,35 +13,41 @@ extra-doc-files: CHANGELOG.md
 common warnings
     ghc-options:
         -Wall
+common buildc
+    include-dirs:
+        include,
+        include/RGFW
+    c-sources: include/RGFW_HS.c
+    install-includes:
+        RGFW_HS.c
+common pkgconfig
+    pkgconfig-depends:
+        gl,
+        x11,
+        xcursor,
+        xrandr,
+        xi
+common default-language
+    default-language: Haskell2010
 library
-    import: warnings
+    import:
+        warnings,
+        buildc,
+        pkgconfig,
+        default-language
     exposed-modules: RGFW
     build-depends:
         base >=4.18,
         bindings-DSL <1000
-    pkgconfig-depends:
-        gl,
-        x11,
-        xcursor,
-        xrandr,
-        xi
     hs-source-dirs: lib
-    include-dirs: include/RGFW
-    default-language: Haskell2010
 executable hs-rgfw
-    import: warnings
+    import:
+        warnings,
+        buildc,
+        pkgconfig,
+        default-language
     main-is: Main.hs
     build-depends:
         base >=4.18,
         hs-rgfw
-    pkgconfig-depends:
-        gl,
-        x11,
-        xcursor,
-        xrandr,
-        xi
     hs-source-dirs: src
-    include-dirs: include
-    c-sources: include/RGFW_HS.c
-    install-includes: RGFW_HS.h
-    default-language: Haskell2010

lib/RGFW.hsc

@@ -5,12 +5,19 @@ import Foreign.Ptr
 #strict_import
 #include <RGFW.h>
 
+-- | DEPRECATED, please use a CUChar instead.
 #synonym_t u8 , CChar
 
+#synonym_t RGFW_bool , CUChar
+
+--------------------------------------------------------------------------------
+-- OPAQUE TYPES
+--------------------------------------------------------------------------------
 #opaque_t RGFW_window
 
-#ccall RGFW_createWindow , CString -> CInt -> CInt -> CInt -> CInt -> CUInt -> IO (Ptr <struct RGFW_window>)
-
+--------------------------------------------------------------------------------
+-- ENUMS
+--------------------------------------------------------------------------------
 #synonym_t RGFW_windowFlags , CUInt
 #num RGFW_windowNoBorder
 #num RGFW_windowNoResize
@@ -32,6 +39,151 @@ import Foreign.Ptr
 #num RGFW_windowEGL
 #num RGFW_windowedFullscreen
 
-#ccall RGFW_window_shouldClose , Ptr <struct RGFW_window> -> IO CUChar
+#synonym_t RGFW_keymod , CUChar
+#num RGFW_modCapsLock
+#num RGFW_modNumLock
+#num RGFW_modControl
+#num RGFW_modAlt
+#num RGFW_modShift
+#num RGFW_modSuper
+#num RGFW_modScrollLock
 
+#synonym_t RGFW_key , CUChar
+#num RGFW_keyNULL
+#num RGFW_escape
+#num RGFW_backtick
+#num RGFW_0
+#num RGFW_1
+#num RGFW_2
+#num RGFW_3
+#num RGFW_4
+#num RGFW_5
+#num RGFW_6
+#num RGFW_7
+#num RGFW_8
+#num RGFW_9
+#num RGFW_minus
+#num RGFW_equals
+#num RGFW_backSpace
+#num RGFW_tab
+#num RGFW_space
+#num RGFW_a
+#num RGFW_b
+#num RGFW_c
+#num RGFW_d
+#num RGFW_e
+#num RGFW_f
+#num RGFW_g
+#num RGFW_h
+#num RGFW_i
+#num RGFW_j
+#num RGFW_k
+#num RGFW_l
+#num RGFW_m
+#num RGFW_n
+#num RGFW_o
+#num RGFW_p
+#num RGFW_q
+#num RGFW_r
+#num RGFW_s
+#num RGFW_t
+#num RGFW_u
+#num RGFW_v
+#num RGFW_w
+#num RGFW_x
+#num RGFW_y
+#num RGFW_z
+#num RGFW_period
+#num RGFW_comma
+#num RGFW_slash
+#num RGFW_bracket
+#num RGFW_closeBracket
+#num RGFW_semicolon
+#num RGFW_apostrophe
+#num RGFW_backSlash
+#num RGFW_return
+#num RGFW_enter
+#num RGFW_delete
+#num RGFW_F1
+#num RGFW_F2
+#num RGFW_F3
+#num RGFW_F4
+#num RGFW_F5
+#num RGFW_F6
+#num RGFW_F7
+#num RGFW_F8
+#num RGFW_F9
+#num RGFW_F10
+#num RGFW_F11
+#num RGFW_F12
+#num RGFW_F13
+#num RGFW_F14
+#num RGFW_F15
+#num RGFW_F16
+#num RGFW_F17
+#num RGFW_F18
+#num RGFW_F19
+#num RGFW_F20
+#num RGFW_F21
+#num RGFW_F22
+#num RGFW_F23
+#num RGFW_F24
+#num RGFW_F25
+#num RGFW_capsLock
+#num RGFW_shiftL
+#num RGFW_controlL
+#num RGFW_altL
+#num RGFW_superL
+#num RGFW_shiftR
+#num RGFW_controlR
+#num RGFW_altR
+#num RGFW_superR
+#num RGFW_up
+#num RGFW_down
+#num RGFW_left
+#num RGFW_right
+#num RGFW_insert
+#num RGFW_menu
+#num RGFW_end
+#num RGFW_home
+#num RGFW_pageUp
+#num RGFW_pageDown
+#num RGFW_numLock
+#num RGFW_kpSlash
+#num RGFW_kpMultiply
+#num RGFW_kpPlus
+#num RGFW_kpMinus
+#num RGFW_kpEqual
+#num RGFW_kp1
+#num RGFW_kp2
+#num RGFW_kp3
+#num RGFW_kp4
+#num RGFW_kp5
+#num RGFW_kp6
+#num RGFW_kp7
+#num RGFW_kp8
+#num RGFW_kp9
+#num RGFW_kp0
+#num RGFW_kpPeriod
+#num RGFW_kpReturn
+#num RGFW_scrollLock
+#num RGFW_printScreen
+#num RGFW_pause
+#num RGFW_world1
+#num RGFW_world2
+#num RGFW_keyLast
+
+--------------------------------------------------------------------------------
+-- FUNCTIONS : WINDOWING
+--------------------------------------------------------------------------------
+#ccall RGFW_createWindow , CString -> CInt -> CInt -> CInt -> CInt -> CUInt -> IO (Ptr <struct RGFW_window>)
+#ccall RGFW_window_shouldClose , Ptr <struct RGFW_window> -> IO CUChar
 #ccall RGFW_window_swapBuffers_OpenGL , Ptr <struct RGFW_window> -> IO ()
+#ccall RGFW_window_setShouldClose , Ptr <struct RGFW_window> -> CUChar -> IO ()
+
+--------------------------------------------------------------------------------
+-- FUNCTIONS : EVENTS
+--------------------------------------------------------------------------------
+#ccall RGFW_pollEvents , IO ()
+#callback RGFW_keyfunc , Ptr <struct RGFW_window> -> CUChar -> CUChar -> CUChar -> CUChar -> CUChar -> IO ()
+#ccall RGFW_setKeyCallback , <RGFW_keyfunc> -> IO <RGFW_keyfunc>

src/Main.hs

@@ -1,6 +1,8 @@
 module Main (main) where
 
 import Foreign.C.String (withCString)
+import Foreign.C.Types
+import Foreign.Ptr
 
 import RGFW
 
@@ -23,14 +25,27 @@ main = do
         , c'RGFW_windowedFullscreen
         ]
     )
+  keyfuncPtr <- mk'RGFW_keyfunc keyfunc
+  c'RGFW_setKeyCallback keyfuncPtr
   putStrLn $ show window
   let loop ctr = do
         shouldClose <- c'RGFW_window_shouldClose window
         if 0 /= shouldClose
         then return shouldClose
         else do
+          c'RGFW_pollEvents
           c'RGFW_window_swapBuffers_OpenGL window
           loop $ ctr + 1
   exitCode <- loop (0 :: Integer)
   putStrLn $ show exitCode
+  freeHaskellFunPtr keyfuncPtr
   return ()
+
+type RGFW_keyfunc = Ptr C'RGFW_window -> C'RGFW_key -> CUChar -> C'RGFW_keymod -> C'RGFW_bool -> C'RGFW_bool -> IO ()
+
+keyfunc :: RGFW_keyfunc
+keyfunc window key sym mod repeat pressed = do
+  if key == c'RGFW_escape && mod == 0 then do
+    c'RGFW_window_setShouldClose window 1
+  else
+    return ()