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Simplify window fraction logic - scroll - scrollbackbuffer program for st |
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git clone git://git.suckless.org/scroll |
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commit 66f97243ff888b8cdcd69b57d3abdaf58a070ec9 |
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parent 4ed0bd4aa3382ec3b73693b4379cfa8cc91e0e7e |
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Author: Jochen Sprickerhof <[email protected]> |
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Date: Sun, 12 Apr 2020 22:53:03 +0200 |
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Simplify window fraction logic |
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Diffstat: |
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M scroll.c | 8 ++++---- |
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1 file changed, 4 insertions(+), 4 deletions(-) |
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--- |
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diff --git a/scroll.c b/scroll.c |
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@@ -296,8 +296,8 @@ scrollup(int n) |
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int rows = 2; |
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struct line *scrollend = bottom; |
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- if (n < 0) |
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- n = ws.ws_row / (-n) > 0 ? ws.ws_row / (-n) : 1; |
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+ if (n < 0) /* scroll by fraction of window rows, but at least one line… |
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+ n = ws.ws_row > (-n) ? ws.ws_row / (-n) : 1; |
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/* wind back scrollend pointer by one page plus n */ |
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for (; scrollend != NULL && TAILQ_NEXT(scrollend, entries) != NULL && |
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@@ -338,8 +338,8 @@ scrolldown(char *buf, size_t size, int n) |
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if (bottom == NULL || bottom == TAILQ_FIRST(&head)) |
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return; |
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- if (n < 0) |
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- n = ws.ws_row / (-n) > 0 ? ws.ws_row / (-n) : 1; |
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+ if (n < 0) /* scroll by fraction of window rows, but at least one line… |
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+ n = ws.ws_row > (-n) ? ws.ws_row / (-n) : 1; |
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bottom = TAILQ_PREV(bottom, tailhead, entries); |
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/* print n lines */ |
