slack: ctrl-b for page-up
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@ -221,6 +221,34 @@ fn page-down _env: (addr environment), _items: (addr item-list) {
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}
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}
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fn page-up _env: (addr environment), _items: (addr item-list) {
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fn page-up _env: (addr environment), _items: (addr item-list) {
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var env/edi: (addr environment) <- copy _env
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var items/esi: (addr item-list) <- copy _items
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var items-data-ah/eax: (addr handle array item) <- get items, data
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var _items-data/eax: (addr array item) <- lookup *items-data-ah
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var items-data/ebx: (addr array item) <- copy _items-data
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var newest-item-index-a/esi: (addr int) <- get items, newest
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var src/eax: (addr int) <- get env, item-index
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var new-item-index/ecx: int <- copy *src
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var y/edx: int <- copy 2
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{
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compare new-item-index, *newest-item-index-a
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break-if->
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compare y, 0x28/screen-height-minus-menu
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break-if->=
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var offset/eax: (offset item) <- compute-offset items-data, new-item-index
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var item/eax: (addr item) <- index items-data, offset
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var item-text-ah/eax: (addr handle array byte) <- get item, text
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var item-text/eax: (addr array byte) <- lookup *item-text-ah
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var h/eax: int <- estimate-height item-text
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set-cursor-position 0/screen, 0 0
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draw-int32-decimal-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, h, 4/fg 0/bg
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y <- add h
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new-item-index <- increment
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loop
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}
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new-item-index <- decrement
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var dest/eax: (addr int) <- get env, item-index
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copy-to *dest, new-item-index
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}
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}
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# keep sync'd with render-item
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# keep sync'd with render-item
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