78 lines
2.2 KiB
Factor
78 lines
2.2 KiB
Factor
! Copyright (C) 2009 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors colors.constants combinators kernel math
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namespaces ;
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IN: fonts
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CONSTANT: default-serif-font-name "serif"
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CONSTANT: default-sans-serif-font-name "sans-serif"
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CONSTANT: default-monospace-font-name "monospace"
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CONSTANT: default-font-size 12
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SYMBOL: default-font-foreground-color
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COLOR: black default-font-foreground-color set-global
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SYMBOL: default-font-background-color
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COLOR: white default-font-background-color set-global
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TUPLE: font name size bold? italic? foreground background ;
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: <font> ( -- font )
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font new
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default-font-foreground-color get >>foreground
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default-font-background-color get >>background ; inline
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: font-with-foreground ( font color -- font' )
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[ clone ] dip >>foreground ; inline
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: font-with-background ( font color -- font' )
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[ clone ] dip >>background ; inline
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: font-with-size ( font size -- font' )
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[ clone ] dip >>size ; inline
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: reverse-video-font ( font -- font )
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clone dup
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[ foreground>> ] [ background>> ] bi
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[ >>background ] [ >>foreground ] bi* ;
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: derive-font ( base font -- font' )
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[
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[ clone ] dip over {
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[ [ name>> ] either? >>name ]
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[ [ size>> ] either? >>size ]
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[ [ bold?>> ] either? >>bold? ]
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[ [ italic?>> ] either? >>italic? ]
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[ [ foreground>> ] either? >>foreground ]
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[ [ background>> ] either? >>background ]
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} 2cleave
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] when* ;
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: serif-font ( -- font )
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<font>
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default-serif-font-name >>name
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default-font-size >>size ;
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: sans-serif-font ( -- font )
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<font>
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default-sans-serif-font-name >>name
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default-font-size >>size ;
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: monospace-font ( -- font )
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<font>
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default-monospace-font-name >>name
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default-font-size >>size ;
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: strip-font-colors ( font -- font' )
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clone f >>background f >>foreground ;
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TUPLE: metrics width ascent descent height leading cap-height x-height ;
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: compute-height ( metrics -- metrics )
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dup [ ascent>> ] [ descent>> ] bi + >>height ; inline
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TUPLE: selection string start end color ;
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C: <selection> selection
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