void
sc_remove_mouse_image(scr_stat *scp)
{
int size;
int i;
if (ISGRAPHSC(scp))
return;
SC_VIDEO_LOCK(scp->sc);
(*scp->rndr->draw_mouse)(scp,
(scp->mouse_oldpos%scp->xsize + scp->xoff)
* scp->font_width,
(scp->mouse_oldpos/scp->xsize + scp->yoff)
* scp->font_size,
FALSE);
size = scp->xsize*scp->ysize;
i = scp->mouse_oldpos;
mark_for_update(scp, i);
mark_for_update(scp, i);
#ifndef PC98
if (i + scp->xsize + 1 < size) {
mark_for_update(scp, i + scp->xsize + 1);
} else if (i + scp->xsize < size) {
mark_for_update(scp, i + scp->xsize);
} else if (i + 1 < size) {
mark_for_update(scp, i + 1);
}
#endif /* PC98 */
scp->status &= ~MOUSE_VISIBLE;
SC_VIDEO_UNLOCK(scp->sc);
}
void
sc_remove_mouse_image(scr_stat *scp)
{
int cols, i, rows;
if (ISGRAPHSC(scp))
return;
SC_VIDEO_LOCK(scp->sc);
(*scp->rndr->draw_mouse)(scp, scp->mouse_oldxpos, scp->mouse_oldypos,
FALSE);
/*
* To simplify the renderer and ensure undrawing with correct
* attributes, mark for update a region containing the cursor
* (usually 2x2 character cells joined by almost a full line o
* character cells).
*
* The renderer should only undraw any pixels outside of the text
* window (e.g., ones in borders and hardware cursors).
*/
i = scp->mouse_oldpos;
mark_for_update(scp, i);
mark_for_update(scp, i);
cols = 1 + howmany(10 - 1, scp->font_width); /* up to VGA cursor width 9 */
cols = imax(cols, 2); /* in case it is text mode 2x2 char cells */
cols = imin(cols, scp->xsize - i % scp->xsize);
rows = 1 + howmany(16 - 1, scp->font_size); /* up to VGA cursor height 16 */
rows = imax(rows, 2); /* don't bother reducing 3 to 2 if text */
rows = imin(rows, scp->ysize - i / scp->xsize);
mark_for_update(scp, i + (rows - 1) * scp->xsize + cols - 1);
scp->status &= ~MOUSE_VISIBLE;
SC_VIDEO_UNLOCK(scp->sc);
}
void
sc_draw_mouse_image(scr_stat *scp)
{
if (ISGRAPHSC(scp))
return;
SC_VIDEO_LOCK(scp->sc);
(*scp->rndr->draw_mouse)(scp, scp->mouse_xpos, scp->mouse_ypos, TRUE);
scp->mouse_oldpos = scp->mouse_pos;
scp->mouse_oldxpos = scp->mouse_xpos;
scp->mouse_oldypos = scp->mouse_ypos;
scp->status |= MOUSE_VISIBLE;
SC_VIDEO_UNLOCK(scp->sc);
}
