46 lines
1.3 KiB
Factor
46 lines
1.3 KiB
Factor
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! (c) 2008 Joe Groff, see license for details
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USING: accessors alien.c-types continuations images kernel math
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sequences ui.gadgets ui.gadgets.private ui.gadgets.worlds
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ui.private ui ui.backend destructors locals ;
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IN: ui.offscreen
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TUPLE: offscreen-world < world ;
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M: offscreen-world world-pixel-format-attributes
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{ offscreen T{ depth-bits { value 16 } } } ;
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: <offscreen-world> ( gadget title status -- world )
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offscreen-world new-world ;
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M: offscreen-world graft*
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(open-offscreen-buffer) ;
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M: offscreen-world ungraft*
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[ (ungraft-world) ]
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[ handle>> (close-offscreen-buffer) ]
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[ reset-world ] tri ;
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: open-offscreen ( gadget -- world )
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"" f <offscreen-world>
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[ open-world-window ] [ relayout-1 ] [ ] tri
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notify-queued ;
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: close-offscreen ( world -- )
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ungraft notify-queued ;
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:: bgrx>bitmap ( alien w h -- image )
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<image>
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{ w h } >>dim
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alien w h * 4 * memory>byte-array >>bitmap
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BGRX >>component-order ;
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: offscreen-world>bitmap ( world -- image )
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offscreen-pixels bgrx>bitmap ;
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: do-offscreen ( gadget quot: ( offscreen-world -- ) -- )
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[ open-offscreen ] dip
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over [ slip ] [ close-offscreen ] [ ] cleanup ; inline
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: gadget>bitmap ( gadget -- image )
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[ offscreen-world>bitmap ] do-offscreen ;
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