factor/basis/pango/pango.factor

! Copyright (C) 2008 Matthew Willis.
! Copyright (C) 2009 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license
USING: arrays system alien.destructors alien.c-types alien.syntax alien
combinators math.rectangles kernel math alien.libraries ;
IN: pango

! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! Helpful functions from other parts of pango
! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

<< {
    { [ os winnt? ] [ "pango" "libpango-1.0-0.dll" "cdecl" add-library ] }
    { [ os macosx? ] [ "pango" "/opt/local/lib/libpango-1.0.0.dylib" "cdecl" add-library ] }
    { [ os unix? ] [ ] }
} cond >>

LIBRARY: pango

CONSTANT: PANGO_SCALE 1024

: pango>float ( n -- x ) PANGO_SCALE /f ; inline
: float>pango ( x -- n ) PANGO_SCALE * >integer ; inline

FUNCTION: PangoContext*
pango_context_new ( ) ;

C-STRUCT: PangoRectangle
    { "int" "x" }
    { "int" "y" }
    { "int" "width" }
    { "int" "height" } ;

: PangoRectangle>rect ( PangoRectangle -- rect )
    [ [ PangoRectangle-x pango>float ] [ PangoRectangle-y pango>float ] bi 2array ]
    [ [ PangoRectangle-width pango>float ] [ PangoRectangle-height pango>float ] bi 2array ] bi
    <rect> ;