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Fix bug #13055 with cursor positioning inside scroll-margin.

Browse source 
src/xdisp.c (redisplay_window): If the cursor is visible, but inside
 the scroll margin, move point outside the margin.
This commit is contained in:
Eli Zaretskii 2012-12-03 22:48:12 +02:00
parent 005c8d1340
commit 3cf3c60796
2 changed files with 34 additions and 0 deletions
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5
src/ChangeLog
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@ -1,3 +1,8 @@
2012-12-03 Eli Zaretskii <eliz@gnu.org>
* xdisp.c (redisplay_window): If the cursor is visible, but inside
the scroll margin, move point outside the margin. (Bug#13055)
2012-12-03 Jan Djärv <jan.h.d@swipnet.se>
* gtkutil.c (my_log_handler): New function.

29
src/xdisp.c
View file

@ -15717,6 +15717,35 @@ redisplay_window (Lisp_Object window, int just_this_one_p)
Move it back to a fully-visible line. */
new_vpos = window_box_height (w);
}
else if (w->cursor.vpos >=0)
{
/* Some people insist on not letting point enter the scroll
margin, even though this part handles windows that didn't
scroll at all. */
struct frame *f = XFRAME (w->frame);
int margin = min (scroll_margin, WINDOW_TOTAL_LINES (w) / 4);
int pixel_margin = margin * FRAME_LINE_HEIGHT (f);
bool header_line = WINDOW_WANTS_HEADER_LINE_P (w);
/* Note: We add an extra FRAME_LINE_HEIGHT, because the loop
below, which finds the row to move point to, advances by
the Y coordinate of the _next_ row, see the definition of
MATRIX_ROW_BOTTOM_Y. */
if (w->cursor.vpos < margin + header_line)
new_vpos
= pixel_margin + (header_line
? CURRENT_HEADER_LINE_HEIGHT (w)
: 0) + FRAME_LINE_HEIGHT (f);
else
{
int window_height = window_box_height (w);
if (header_line)
window_height += CURRENT_HEADER_LINE_HEIGHT (w);
if (w->cursor.y >= window_height - pixel_margin)
new_vpos = window_height - pixel_margin;
}
}
/* If we need to move point for either of the above reasons,
now actually do it. */