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[REBOL] Re: list vs. text-list

From: greggirwin:mindspring at: 1-Apr-2003 17:32

dbc> I've been trying to get a scrollable list working in View. I'm using List, dbc> since it was easier to get the column formatting correct, than in Text-list. dbc> Now the problem is I need to make the dbc> List vertically scrollable. Is there a way to do this easily? Sort of easily. :) Below is an example for you. Let me know if it helps, and watch for wrap. -- Gregg REBOL [ Title: "Scrolling LIST Example" File: %list-scroll-demo.r Author: "Gregg Irwin" ] main-lst: sld: t-1: t-2: t-3: t-4: t-5: c-1: none count: ; The index of the current item being fetched for display. ml-cnt: ; Used to track the result list slider value. visible-rows: ; How many result items are visible at one time. 0 items: make block! 400 repeat i 400 [ append/only items reduce [ i random "ACBD" random 1000 random "AGCT" ] ] lay: layout [ origin 5x5 space 1x0 across style col-hdr text 50 center black mint - 20 col-hdr "C1" col-hdr "C2" col-hdr "C3" col-hdr "C4" return pad -2x0 main-lst: list 207x300 [ across space 1x0 origin 0x0 style cell text 50x20 black mint + 25 center middle c-1: cell cell cell cell ] supply [ count: count + ml-cnt item: pick items count face/text: either item [pick item index][none] ] sld: scroller 16x300 [ if ml-cnt <> (val: to-integer value * subtract length? items visible-rows) [ ml-cnt: val show main-lst ] ] ] visible-rows: to integer! (main-lst/size/y / c-1/size/y) sld/redrag divide visible-rows max 1 length? items sld/step: max .001 divide 1 max 1 length? items sld/page: sld/step * visible-rows view lay