47 lines
1.1 KiB
Factor
Executable File
47 lines
1.1 KiB
Factor
Executable File
! Copyright (C) 2005, 2007 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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IN: ui.gadgets.viewports
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USING: arrays ui.gadgets ui.gadgets.borders
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kernel math namespaces sequences models math.vectors ;
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: viewport-gap { 3 3 } ; inline
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TUPLE: viewport ;
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: find-viewport [ viewport? ] find-parent ;
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: viewport-dim ( viewport -- dim )
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gadget-child pref-dim viewport-gap 2 v*n v+ ;
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: <viewport> ( content model -- viewport )
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<gadget> viewport construct-control
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t over set-gadget-clipped?
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[ add-gadget ] keep ;
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M: viewport layout*
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dup rect-dim viewport-gap 2 v*n v-
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over gadget-child pref-dim vmax
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swap gadget-child set-layout-dim ;
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M: viewport focusable-child*
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gadget-child ;
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M: viewport pref-dim* viewport-dim ;
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: scroller-value ( scroller -- loc )
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gadget-model range-value [ >fixnum ] map ;
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M: viewport model-changed
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nip
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dup relayout-1
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dup scroller-value
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vneg viewport-gap v+
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swap gadget-child set-rect-loc ;
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: visible-dim ( gadget -- dim )
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dup gadget-parent viewport? [
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gadget-parent rect-dim viewport-gap 2 v*n v-
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] [
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rect-dim
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] if ;
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