36 lines
1.2 KiB
Factor
36 lines
1.2 KiB
Factor
! Copyright (C) 2009, 2010 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors assocs cache kernel math math.vectors sequences
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fonts namespaces ui.text ui.text.private windows.uniscribe ;
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IN: ui.text.uniscribe
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SINGLETON: uniscribe-renderer
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M: uniscribe-renderer string-dim
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[ " " string-dim { 0 1 } v* ]
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[ cached-script-string size>> ] if-empty ;
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M: uniscribe-renderer flush-layout-cache
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cached-script-strings get-global purge-cache ;
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M: uniscribe-renderer string>image ( font string -- image loc )
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cached-script-string script-string>image { 0 0 } ;
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M: uniscribe-renderer x>offset ( x font string -- n )
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[ 2drop 0 ] [
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cached-script-string x>line-offset 0 = [ 1 + ] unless
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] if-empty ;
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M: uniscribe-renderer offset>x ( n font string -- x )
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[ 2drop 0 ] [ cached-script-string line-offset>x ] if-empty ;
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M: uniscribe-renderer font-metrics ( font -- metrics )
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" " cached-script-string metrics>> clone f >>width ;
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M: uniscribe-renderer line-metrics ( font string -- metrics )
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[ " " line-metrics clone 0 >>width ]
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[ cached-script-string metrics>> 50 >>width 10 >>cap-height 10 >>x-height ]
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if-empty ;
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uniscribe-renderer font-renderer set-global
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