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* xdisp.c (redisplay_window): Make the scrollbar reflect the

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extent of the visible region, not the whole buffer.
This commit is contained in:
Jim Blandy 1993-05-18 22:45:53 +00:00
parent 1334b321d6
commit 3505ea7012
1 changed files with 9 additions and 1 deletions
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10
src/xdisp.c
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@ -1060,6 +1060,11 @@ redisplay_window (window, just_this_one)
int start, end, whole;
/* Calculate the start and end positions for the current window.
At some point, it would be nice to choose between scrollbars
which reflect the whole buffer size, with special markers
indicating narrowing, and scrollbars which reflect only the
visible region.
Note that minibuffers sometimes aren't displaying any text. */
if (! MINI_WINDOW_P (w)
|| (w == XWINDOW (minibuf_window) && ! echo_area_glyphs))
@ -1068,7 +1073,10 @@ redisplay_window (window, just_this_one)
/* I don't think this is guaranteed to be right. For the
moment, we'll pretend it is. */
end = Z - XINT (w->window_end_pos);
whole = Z - BEG;
whole = ZV - BEGV;
if (end < start) end = start;
if (whole > (end - start)) whole = end - start;
}
else
start = end = whole = 0;