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turn off font-metric hinting in all drawing contexts

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which makes font-metric results consistent across DC types
This commit is contained in:
Matthew Flatt 2010-12-17 07:04:21 -07:00
parent 4195cf3297
commit 4e0069d6d8
2 changed files with 8 additions and 0 deletions
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1
collects/racket/draw/private/dc.rkt
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@ -511,6 +511,7 @@
[(unsmoothed) CAIRO_ANTIALIAS_NONE]
[(partly-smoothed) CAIRO_ANTIALIAS_GRAY]
[(smoothed) CAIRO_ANTIALIAS_SUBPIXEL]))
(cairo_font_options_set_hint_metrics o2 CAIRO_HINT_METRICS_OFF)
(pango_cairo_context_set_font_options context o2)
(cairo_font_options_destroy o2)))

7
collects/racket/draw/unsafe/cairo.rkt
View File

@ -161,6 +161,7 @@
(define-cairo cairo_get_font_options (_fun _cairo_t _cairo_font_options_t -> _void))
(define-cairo cairo_set_font_options (_fun _cairo_t _cairo_font_options_t -> _void))
(define-cairo cairo_font_options_set_antialias (_fun _cairo_font_options_t _int -> _void))
(define-cairo cairo_font_options_set_hint_metrics (_fun _cairo_font_options_t _int -> _void))
(define-cairo cairo_show_glyphs (_fun _cairo_t _cairo_glyph_t-pointer _int -> _void))
@ -306,4 +307,10 @@
CAIRO_EXTEND_REFLECT
CAIRO_EXTEND_PAD)
(define-enum
0
CAIRO_HINT_METRICS_DEFAULT
CAIRO_HINT_METRICS_OFF
CAIRO_HINT_METRICS_ON)
(define/provide CAIRO_CONTENT_COLOR_ALPHA #x3000)