mirror of
https://github.com/jesseduffield/lazygit.git
synced 2026-06-09 22:05:16 +02:00
Stefan Haller
196e0a3c17
I copied all files except dot files (.github and .gitignore), the _examples folder, and go.mod/go.sum. At some point we may want to copy the files back to the gocui repo when other clients (e.g. lazydocker) want to use the newer versions of them.
29 lines
1.1 KiB
Go
29 lines
1.1 KiB
Go
package gocui
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import "math"
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// returns start and height of scrollbar
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// `max` is the maximum possible value of `position`
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func calcScrollbar(listSize int, pageSize int, position int, scrollAreaSize int) (int, int) {
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height := calcScrollbarHeight(listSize, pageSize, scrollAreaSize)
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// assume we can't scroll past the last item
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maxPosition := listSize - pageSize
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if maxPosition <= 0 {
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return 0, height
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}
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if position == maxPosition {
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return scrollAreaSize - height, height
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}
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// we only want to show the scrollbar at the top or bottom positions if we're at the end. Hence the .Ceil (for moving the scrollbar once we scroll down) and the -1 (for pretending there's a smaller range than we actually have, with the above condition ensuring we snap to the bottom once we're at the end of the list)
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start := int(math.Ceil(((float64(position) / float64(maxPosition)) * float64(scrollAreaSize-height-1))))
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return start, height
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}
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func calcScrollbarHeight(listSize int, pageSize int, scrollAreaSize int) int {
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if pageSize >= listSize {
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return scrollAreaSize
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}
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return int((float64(pageSize) / float64(listSize)) * float64(scrollAreaSize))
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}
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