factor/library/sdl/sdl-utils.factor

161 lines
4.0 KiB
Factor

! Copyright (C) 2004, 2005 Slava Pestov.
! See http://factor.sf.net/license.txt for BSD license.
IN: sdl
USING: alien math namespaces compiler words parser kernel errors
lists prettyprint sdl-event sdl-gfx sdl-keyboard sdl-video
streams strings sdl-ttf hashtables ;
SYMBOL: surface
SYMBOL: width
SYMBOL: height
SYMBOL: bpp
SYMBOL: surface
: init-screen ( width height bpp flags -- )
>r 3dup bpp set height set width set r>
SDL_SetVideoMode surface set ;
: with-screen ( width height bpp flags quot -- )
#! Set up SDL graphics and call the quotation.
SDL_INIT_EVERYTHING SDL_Init drop TTF_Init
1 SDL_EnableUNICODE drop
SDL_DEFAULT_REPEAT_DELAY SDL_DEFAULT_REPEAT_INTERVAL
SDL_EnableKeyRepeat drop
[ >r init-screen r> call SDL_Quit ] with-scope ; inline
: rgb ( [ r g b ] -- n )
3unlist
255
swap 8 shift bitor
swap 16 shift bitor
swap 24 shift bitor ;
: make-color ( r g b -- color )
#! Make an SDL_Color struct. This will go away soon in favor
#! of pass-by-value support in the FFI.
255 24 shift
swap 16 shift bitor
swap 8 shift bitor
swap bitor ;
: black [ 0 0 0 ] ;
: white [ 255 255 255 ] ;
: red [ 255 0 0 ] ;
: green [ 0 255 0 ] ;
: blue [ 0 0 255 ] ;
: clear-surface ( color -- )
>r surface get 0 0 width get height get r> boxColor ;
: with-pixels ( quot -- )
width get [
height get [
[ rot dup slip swap surface get swap ] 2keep
[ rot pixelColor ] 2keep
] repeat
] repeat drop ; inline
: with-surface ( quot -- )
#! Execute a quotation, locking the current surface if it
#! is required (eg, hardware surface).
[
surface get dup must-lock-surface? [
dup SDL_LockSurface drop slip dup SDL_UnlockSurface
] [
slip
] ifte SDL_Flip drop
] with-scope ; inline
: event-loop ( event -- )
dup SDL_WaitEvent [
dup event-type SDL_QUIT = [
drop
] [
event-loop
] ifte
] [
drop
] ifte ;
SYMBOL: fonts
: null? ( alien -- ? )
dup [ alien-address 0 = ] when ;
: <font> ( name ptsize -- font )
>r resource-path swap cat2 r> TTF_OpenFont ;
SYMBOL: logical-fonts
: logical-font ( name -- name )
dup logical-fonts get hash dup [ nip ] [ drop ] ifte ;
global [
{{
[[ "Monospaced" "/fonts/VeraMono.ttf" ]]
[[ "Serif" "/fonts/VeraSe.ttf" ]]
[[ "Sans Serif" "/fonts/Vera.ttf" ]]
}} logical-fonts set
] bind
: (lookup-font) ( [[ name ptsize ]] -- font )
unswons logical-font swons dup get dup alien? [
dup alien-address 0 = [
drop f
] when
] when ;
: lookup-font ( [[ name ptsize ]] -- font )
fonts get [
(lookup-font) [
nip
] [
[ uncons <font> dup ] keep set
] ifte*
] bind ;
: make-rect ( x y w h -- rect )
<rect>
[ set-rect-h ] keep
[ set-rect-w ] keep
[ set-rect-y ] keep
[ set-rect-x ] keep ;
: surface-rect ( x y surface -- rect )
dup surface-w swap surface-h make-rect ;
: draw-surface ( x y surface -- )
surface get SDL_UnlockSurface
[
[ surface-rect ] keep swap surface get 0 0
] keep surface-rect swap rot SDL_UpperBlit drop
surface get dup must-lock-surface? [
SDL_LockSurface
] when drop ;
: filter-nulls ( str -- str )
"\0" over str-contains? [
[ dup CHAR: \0 = [ drop CHAR: \s ] when ] str-map
] when ;
: draw-string ( x y font text fg -- width )
>r filter-nulls r> over str-length 0 = [
2drop 3drop 0
] [
>r >r lookup-font r> r>
TTF_RenderUNICODE_Blended
[ draw-surface ] keep
[ surface-w ] keep
SDL_FreeSurface
] ifte ;
: size-string ( font text -- w h )
>r lookup-font r> filter-nulls dup str-length 0 = [
drop TTF_FontHeight 0 swap
] [
<int-box> <int-box> [ TTF_SizeUNICODE drop ] 2keep
swap int-box-i swap int-box-i
] ifte ;
global [ <namespace> fonts set ] bind