39 lines
1.2 KiB
Factor
39 lines
1.2 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 alien.c-types assocs cache kernel math math.vectors
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namespaces opengl.textures pango.cairo pango.layouts ui.gadgets.worlds
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ui.text ui.text.private pango sequences ;
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IN: ui.text.pango
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SINGLETON: pango-renderer
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M: pango-renderer string-dim
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[ " " string-dim { 0 1 } v* ]
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[ cached-layout logical-rect>> dim>> [ >integer ] map ] if-empty ;
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M: pango-renderer flush-layout-cache
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cached-layouts get purge-cache ;
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: rendered-layout ( font string -- texture )
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world get world-text-handle [
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cached-layout [ image>> ] [ text-position vneg ] bi <texture>
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] 2cache ;
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M: pango-renderer draw-string ( font string -- )
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rendered-layout draw-texture ;
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M: pango-renderer x>offset ( x font string -- n )
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cached-layout swap x>line-offset ;
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M: pango-renderer offset>x ( n font string -- x )
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cached-layout swap line-offset>x ;
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M: pango-renderer font-metrics ( font -- metrics )
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" " cached-layout metrics>> clone f >>width ;
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M: pango-renderer line-metrics ( font string -- metrics )
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[ " " line-metrics clone 0 >>width ]
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[ cached-layout metrics>> ]
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if-empty ;
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pango-renderer font-renderer set-global |