53 lines
1.5 KiB
Factor
53 lines
1.5 KiB
Factor
! Copyright (C) 2005 Slava Pestov.
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! See http://factor.sf.net/license.txt for BSD license.
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IN: gadgets-books
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USING: gadgets gadgets-buttons gadgets-labels gadgets-layouts
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gadgets-theme generic kernel lists math namespaces sequences
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styles ;
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TUPLE: book page ;
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C: book ( pages -- book )
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[ >r make-stack r> set-gadget-delegate ] keep
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0 over set-book-page ;
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M: book layout* ( book -- )
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dup delegate layout*
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dup gadget-children [ hide-gadget ] each
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dup book-page swap gadget-children nth
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[ show-gadget ] when* ;
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: show-page ( n book -- )
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[ gadget-children length rem ] keep
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[ set-book-page ] keep relayout-1 ;
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: first-page ( book -- ) 0 swap show-page ;
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: prev-page ( book -- ) [ book-page 1- ] keep show-page ;
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: next-page ( book -- ) [ book-page 1+ ] keep show-page ;
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: last-page ( book -- ) -1 swap show-page ;
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TUPLE: book-browser book ;
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: find-book ( gadget -- )
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[ book-browser? ] find-parent book-browser-book ;
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: <book-button> ( polygon quot -- button )
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\ find-book swons >r gray swap <polygon-gadget> r>
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<bevel-button> ;
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: <book-buttons> ( book -- gadget )
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[
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arrow-|left [ first-page ] <book-button> ,
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arrow-left [ prev-page ] <book-button> ,
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arrow-right [ next-page ] <book-button> ,
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arrow-right| [ last-page ] <book-button> ,
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] { } make make-shelf ;
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C: book-browser ( book -- gadget )
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dup delegate>frame
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<book-buttons> over @top frame-add
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[ 2dup set-book-browser-book @center frame-add ] keep ;
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