nvi/vi/vs_split.c

38  *	Create a new screen, horizontally.
45 	SCR *new,
66 	/* Get a new screen map. */
67 	CALLOC(sp, _HMAP(new), SMAP *, SIZE_HMAP(sp), sizeof(SMAP));
68 	if (_HMAP(new) == NULL)
70 	_HMAP(new)->lno = sp->lno;
71 	_HMAP(new)->coff = 0;
72 	_HMAP(new)->soff = 1;
86 	new->coff = sp->coff;
87 	new->cols = sp->cols;
92 	 * half of the current screen, the new screen goes under the current
102 		new->rows = sp->rows - half;	/* New. */
103 		new->roff = sp->roff;
105 		sp->roff += new->rows;
111 		memcpy(_HMAP(sp), _HMAP(sp) + new->rows,
112 		    (sp->t_maxrows - new->rows) * sizeof(SMAP));
114 		new->rows = half;		/* New. */
116 		new->roff = sp->roff + sp->rows;
121 	new->t_maxrows = IS_ONELINE(new) ? 1 : new->rows - 1;
128 	 * new screen sizes.
133 			sp->t_rows -= new->rows;
142 		new->t_minrows = new->t_rows = O_VAL(sp, O_WINDOW);
143 		if (new->t_rows > new->t_maxrows)
144 			new->t_rows = new->t_maxrows;
145 		if (new->t_minrows > new->t_maxrows)
146 			new->t_minrows = new->t_maxrows;
151 		 * The new screen may be a small screen, even if the parent
156 		new->t_minrows = new->t_rows = O_VAL(sp, O_WINDOW);
157 		if (new->t_rows > new->rows - 1)
158 			new->t_minrows = new->t_rows =
159 			    IS_ONELINE(new) ? 1 : new->rows - 1;
162 	/* Adjust the ends of the new and old maps. */
165 	_TMAP(new) = IS_ONELINE(new) ?
166 	    _HMAP(new) : _HMAP(new) + (new->t_rows - 1);
171 	if ((new->defscroll = new->t_maxrows / 2) == 0)
172 		new->defscroll = 1;
175 	vs_insert(new, sp->gp);
178 	(void)gp->scr_split(sp, new);
193 	 * Draw the new screen from scratch, and add a status line.
195 	F_SET(new,
203  *	Create a new screen, vertically.
208 vs_vsplit(SCR *sp, SCR *new)
226 	/* Get a new screen map. */
227 	CALLOC(sp, _HMAP(new), SMAP *, SIZE_HMAP(sp), sizeof(SMAP));
228 	if (_HMAP(new) == NULL)
230 	_HMAP(new)->lno = sp->lno;
231 	_HMAP(new)->coff = 0;
232 	_HMAP(new)->soff = 1;
248 	new->cols = sp->cols - cols - 1;
250 	new->coff = sp->coff + cols + 1;
254 	new->rows = sp->rows;
255 	new->t_rows = sp->t_rows;
256 	new->t_maxrows = sp->t_maxrows;
257 	new->t_minrows = sp->t_minrows;
258 	new->roff = sp->roff;
259 	new->defscroll = sp->defscroll;
260 	_TMAP(new) = _HMAP(new) + (new->t_rows - 1);
263 	vs_insert(new, sp->gp);
266 	(void)gp->scr_split(sp, new);
284 	 * Draw the new screen from scratch, and add a status line.
286 	F_SET(new,
294  *	Insert the new screen into the correct place in the logical
609  *	Background the current screen, and foreground a new one.
644 		/* Remove the new screen from the background queue. */
744 	 * The new screens may have different screen options sizes than the
746 	 * than the new screen sizes.
760 	/* Allocate a new screen map. */
770 	 * The new screen replaces the old screen in the parent/child list.
771 	 * We insert the new screen after the old one.  If we're exiting,
784 	/* Draw the new screen from scratch, and add a status line. */