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https://github.com/jesseduffield/lazygit.git
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f933a2f7ec
We upgraded our minimum Go version to 1.21 in commit 57ac9c2189458a7f0e63c2e9cac8334694a3d545. We can now replace our `utils.Min` and `utils.Max` functions with the built-in `min` and `max`. Reference: https://go.dev/ref/spec#Min_and_max Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
50 lines
1.7 KiB
Go
50 lines
1.7 KiB
Go
package patch_exploring
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func calculateOrigin(currentOrigin int, bufferHeight int, numLines int, firstLineIdx int, lastLineIdx int, selectedLineIdx int, mode selectMode) int {
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needToSeeIdx, wantToSeeIdx := getNeedAndWantLineIdx(firstLineIdx, lastLineIdx, selectedLineIdx, mode)
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return calculateNewOriginWithNeededAndWantedIdx(currentOrigin, bufferHeight, numLines, needToSeeIdx, wantToSeeIdx)
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}
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// we want to scroll our origin so that the index we need to see is in view
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// and the other index we want to see (e.g. the other side of a line range)
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// is as close to being in view as possible.
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func calculateNewOriginWithNeededAndWantedIdx(currentOrigin int, bufferHeight int, numLines int, needToSeeIdx int, wantToSeeIdx int) int {
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origin := currentOrigin
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if needToSeeIdx < currentOrigin || needToSeeIdx > currentOrigin+bufferHeight {
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origin = max(min(needToSeeIdx-bufferHeight/2, numLines-bufferHeight-1), 0)
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}
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bottom := origin + bufferHeight
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if wantToSeeIdx < origin {
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requiredChange := origin - wantToSeeIdx
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allowedChange := bottom - needToSeeIdx
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return origin - min(requiredChange, allowedChange)
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} else if wantToSeeIdx > origin+bufferHeight {
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requiredChange := wantToSeeIdx - bottom
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allowedChange := needToSeeIdx - origin
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return origin + min(requiredChange, allowedChange)
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} else {
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return origin
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}
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}
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func getNeedAndWantLineIdx(firstLineIdx int, lastLineIdx int, selectedLineIdx int, mode selectMode) (int, int) {
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switch mode {
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case LINE:
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return selectedLineIdx, selectedLineIdx
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case RANGE:
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if selectedLineIdx == firstLineIdx {
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return firstLineIdx, lastLineIdx
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} else {
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return lastLineIdx, firstLineIdx
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}
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case HUNK:
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return firstLineIdx, lastLineIdx
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default:
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// we should never land here
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panic("unknown mode")
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}
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}
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