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(fast_find_position): Don't overstep the last window row.

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(IT_note_mouse_highlight): Initialize portion to -1.  Remove
unused variable `area'.  When looking for a row under (X,Y), give
up if some of the previous rows is not enabled.
This commit is contained in:
Eli Zaretskii 2000-12-12 14:55:35 +00:00
parent 09cefa66ee
commit 440ffd67db
1 changed files with 15 additions and 4 deletions
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19
src/msdos.c
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@ -1360,6 +1360,11 @@ fast_find_position (struct window *w, int pos, int *hpos, int *vpos)
}
else if (line_start_position > 0)
best_row = row;
/* Don't overstep the last matrix row, lest we get into the
never-never land... */
if (row->y + 1 >= yb)
break;
++row;
}
@ -1456,7 +1461,7 @@ static void
IT_note_mouse_highlight (struct frame *f, int x, int y)
{
struct display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
int portion;
int portion = -1;
Lisp_Object window;
struct window *w;
@ -1515,16 +1520,22 @@ IT_note_mouse_highlight (struct frame *f, int x, int y)
&& (XFASTINT (w->last_overlay_modified)
== BUF_OVERLAY_MODIFF (XBUFFER (w->buffer))))
{
int pos, i, area;
int pos, i;
struct glyph_row *row;
struct glyph *glyph;
int nrows = w->current_matrix->nrows;
/* Find the glyph under X/Y. */
glyph = NULL;
if (y < w->current_matrix->nrows)
if (y >= 0 && y < nrows)
{
row = MATRIX_ROW (w->current_matrix, y);
if (row->enabled_p
/* Give up if some row before the one we are looking for is
not enabled. */
for (i = 0; i <= y; i++)
if (!MATRIX_ROW (w->current_matrix, i)->enabled_p)
break;
if (i > y /* all rows upto and including the one at Y are enabled */
&& row->displays_text_p
&& x < window_box_width (w, TEXT_AREA))
{