29 lines
714 B
Factor
29 lines
714 B
Factor
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! Copyright (C) 2005, 2006 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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IN: gadgets-scrolling
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USING: arrays gadgets gadgets-layouts generic kernel math
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namespaces sequences ;
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! A viewport can be scrolled.
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TUPLE: viewport ;
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: find-viewport [ viewport? ] find-parent ;
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: viewport-dim gadget-child pref-dim ;
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C: viewport ( content -- viewport )
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dup delegate>gadget
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t over set-gadget-root?
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[ add-gadget ] keep ;
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M: viewport pref-dim* gadget-child pref-dim ;
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M: viewport layout* ( viewport -- )
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gadget-child dup prefer layout ;
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M: viewport focusable-child* ( viewport -- gadget )
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gadget-child ;
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M: viewport pref-dim* ( viewport -- dim )
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gadget-child pref-dim ;
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