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more freetype tweaks

cvs
Slava Pestov 2005-10-23 21:13:21 +00:00
parent 13b45b0fb1
commit 2bc2f23b45
1 changed files with 10 additions and 7 deletions
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17
library/freetype/freetype-gl.factor
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@ -81,12 +81,14 @@ TUPLE: font ascent descent height handle sprites ;
ttf-name ttf-path >r freetype get r> ttf-name ttf-path >r freetype get r>
0 f <void*> [ FT_New_Face freetype-error ] keep *void* ; 0 f <void*> [ FT_New_Face freetype-error ] keep *void* ;
: dpi 72 ; : dpi 72 ; inline
: fix>int 64 /i ; : ft-floor -6 shift ; inline
: ft-ceil 63 + -64 bitand -6 shift ; inline
: font-units>pixels ( n font -- n ) : font-units>pixels ( n font -- n )
face-size face-size-y-scale FT_MulFix fix>int ; face-size face-size-y-scale FT_MulFix ;
: init-ascent ( font face -- ) : init-ascent ( font face -- )
dup face-y-max swap font-units>pixels swap set-font-ascent ; dup face-y-max swap font-units>pixels swap set-font-ascent ;
@ -96,7 +98,8 @@ TUPLE: font ascent descent height handle sprites ;
: init-font ( font -- ) : init-font ( font -- )
dup font-handle 2dup init-ascent dupd init-descent dup font-handle 2dup init-ascent dupd init-descent
dup font-ascent over font-descent - swap set-font-height ; dup font-ascent over font-descent - ft-ceil
swap set-font-height ;
C: font ( handle -- font ) C: font ( handle -- font )
[ set-font-handle ] keep dup flush-font dup init-font ; [ set-font-handle ] keep dup flush-font dup init-font ;
@ -115,8 +118,8 @@ C: font ( handle -- font )
freetype-error face-glyph ; freetype-error face-glyph ;
: glyph-size ( glyph -- dim ) : glyph-size ( glyph -- dim )
dup glyph-advance-x fix>int dup glyph-hori-advance ft-ceil
swap glyph-height fix>int 0 3array ; swap glyph-height ft-ceil 0 3array ;
: render-glyph ( font char -- bitmap ) : render-glyph ( font char -- bitmap )
#! Render a character and return a pointer to the bitmap. #! Render a character and return a pointer to the bitmap.
@ -157,7 +160,7 @@ C: font ( handle -- font )
] with-locked-block ; ] with-locked-block ;
: glyph-texture-loc ( glyph font -- loc ) : glyph-texture-loc ( glyph font -- loc )
font-ascent swap glyph-hori-bearing-y fix>int - font-ascent swap glyph-hori-bearing-y - ft-floor
0 swap 0 3array ; 0 swap 0 3array ;
: glyph-texture-size ( glyph -- dim ) : glyph-texture-size ( glyph -- dim )