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avoid another Pango function that request 1.22

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This commit is contained in:
Matthew Flatt 2010-08-11 20:45:37 -06:00
parent 7a70c28197
commit b486d43304
1 changed files with 15 additions and 1 deletions
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16
collects/racket/draw/pango.rkt
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@ -54,6 +54,7 @@
(define PangoAttribute (_cpointer 'PangoAttribute))
(define PangoLanguage (_cpointer 'PangoLanguage))
(define PangoCoverage (_cpointer 'PangoCoverage))
(define PangoLayoutIter (_cpointer 'PangoLayoutIter))
(define-cstruct _PangoRectangle ([x _int]
[y _int]
@ -100,9 +101,22 @@
(define-pango pango_layout_set_text (_fun PangoLayout [s : _string] [_int = -1] -> _void))
(define-pangocairo pango_cairo_show_layout (_fun _cairo_t PangoLayout -> _void))
(define-pango pango_layout_iter_free (_fun PangoLayoutIter -> _void)
#:wrap (deallocator))
(define-pango pango_layout_get_iter (_fun PangoLayout -> PangoLayoutIter)
#:wrap (allocator pango_layout_iter_free))
(define-pango pango_layout_iter_get_baseline (_fun PangoLayoutIter -> _int))
(define-pango pango_layout_get_context (_fun PangoLayout -> PangoContext)) ;; not an allocator
(define-pango pango_layout_get_extents (_fun PangoLayout _pointer _PangoRectangle-pointer -> _void))
(define-pango pango_layout_get_baseline (_fun PangoLayout -> _int))
(define-pango pango_layout_get_baseline (_fun PangoLayout -> _int)
;; The convenince function pango_layout_get_baseline() is in 1.22 and later
#:fail (lambda ()
(lambda (layout)
(let ([iter (pango_layout_get_iter layout)])
(begin0
(pango_layout_iter_get_baseline iter)
(pango_layout_iter_free iter))))))
(define-pango pango_layout_new (_fun PangoContext -> PangoLayout)
#:wrap (allocator g_object_unref))