76 lines
2.0 KiB
Factor
76 lines
2.0 KiB
Factor
! Copyright (C) 2004, 2005 Slava Pestov.
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! See http://factor.sf.net/license.txt for BSD license.
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IN: sdl
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USING: kernel lists math namespaces sequences ;
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SYMBOL: surface
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SYMBOL: width
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SYMBOL: height
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SYMBOL: bpp
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: init-screen ( width height bpp flags -- )
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>r 3dup bpp set height set width set r>
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SDL_SetVideoMode surface set ;
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: with-screen ( width height bpp flags quot -- )
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#! Set up SDL graphics and call the quotation.
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SDL_INIT_EVERYTHING SDL_Init drop
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1 SDL_EnableUNICODE drop
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SDL_DEFAULT_REPEAT_DELAY SDL_DEFAULT_REPEAT_INTERVAL
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SDL_EnableKeyRepeat drop
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[ >r init-screen r> call SDL_Quit ] with-scope ; inline
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: rgb ( [ r g b ] -- n )
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3unseq
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255
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swap >fixnum 8 shift bitor
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swap >fixnum 16 shift bitor
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swap >fixnum 24 shift bitor ;
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: make-color ( r g b -- color )
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#! Make an SDL_Color struct. This will go away soon in favor
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#! of pass-by-value support in the FFI.
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255 24 shift
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swap 16 shift bitor
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swap 8 shift bitor
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swap bitor ;
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: make-rect ( x y w h -- rect )
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<sdl-rect>
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[ set-sdl-rect-h ] keep
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[ set-sdl-rect-w ] keep
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[ set-sdl-rect-y ] keep
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[ set-sdl-rect-x ] keep ;
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: with-pixels ( quot -- )
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width get [
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height get [
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[ rot dup slip swap surface get swap ] 2keep
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[ rot pixelColor ] 2keep
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] repeat
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] repeat drop ; inline
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: must-lock-surface? ( surface -- ? )
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#! This is a macro in SDL_video.h.
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dup surface-offset 0 = [
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surface-flags
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SDL_HWSURFACE SDL_ASYNCBLIT bitor SDL_RLEACCEL bitor
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bitand 0 = not
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] [
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drop t
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] ifte ;
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: with-surface ( quot -- )
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#! Execute a quotation, locking the current surface if it
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#! is required (eg, hardware surface).
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[
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surface get dup must-lock-surface? [
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dup SDL_LockSurface drop slip dup SDL_UnlockSurface
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] [
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slip
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] ifte SDL_Flip drop
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] with-scope ; inline
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: surface-rect ( x y surface -- rect )
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dup surface-w swap surface-h make-rect ;
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