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(set_cursor_from_row): If cursor cannot be set in row,

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don't update w->cursor and return 0.  Return 1 on success.
(try_cursor_movement): Repeat set_cursor_from_row on successive rows
until it succeeds.
This commit is contained in:
Kim F. Storm 2006-05-28 20:19:07 +00:00
parent 794033ae3c
commit a4f3f618eb
1 changed files with 23 additions and 4 deletions
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27
src/xdisp.c
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@ -11620,9 +11620,11 @@ redisplay_window_1 (window)
/* Set cursor position of W. PT is assumed to be displayed in ROW.
DELTA is the number of bytes by which positions recorded in ROW
differ from current buffer positions. */
differ from current buffer positions.
void
Return 0 if cursor is not on this row. 1 otherwise. */
int
set_cursor_from_row (w, row, matrix, delta, delta_bytes, dy, dvpos)
struct window *w;
struct glyph_row *row;
@ -11772,6 +11774,11 @@ set_cursor_from_row (w, row, matrix, delta, delta_bytes, dy, dvpos)
SKIP_GLYPHS (glyph, end, x, EQ (glyph->object, string));
}
}
/* If we reached the end of the line, and end was from a string,
cursor is not on this line. */
if (glyph == end)
return 0;
}
w->cursor.hpos = glyph - row->glyphs[TEXT_AREA];
@ -11805,6 +11812,8 @@ set_cursor_from_row (w, row, matrix, delta, delta_bytes, dy, dvpos)
else
CHARPOS (this_line_start_pos) = 0;
}
return 1;
}
@ -12488,8 +12497,18 @@ try_cursor_movement (window, startp, scroll_step)
rc = CURSOR_MOVEMENT_MUST_SCROLL;
else
{
set_cursor_from_row (w, row, w->current_matrix, 0, 0, 0, 0);
rc = CURSOR_MOVEMENT_SUCCESS;
do
{
if (set_cursor_from_row (w, row, w->current_matrix, 0, 0, 0, 0))
{
rc = CURSOR_MOVEMENT_SUCCESS;
break;
}
++row;
}
while (MATRIX_ROW_BOTTOM_Y (row) < last_y
&& MATRIX_ROW_START_CHARPOS (row) == PT
&& cursor_row_p (w, row));
}
}
}