grid-cell.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2012 Nicholas Marriott <nicm@users.sourceforge.net>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include <sys/types.h>
  20
  21 #include <string.h>
  22
  23 #include "tmux.h"
  24
  25 /* Get cell width. */
  26 u_int
  27 grid_cell_width(const struct grid_cell *gc)
  28 {
  29         return (gc->xstate >> 4);
  30 }
  31
  32 /* Get cell data. */
  33 void
  34 grid_cell_get(const struct grid_cell *gc, struct utf8_data *ud)
  35 {
  36         ud->size = gc->xstate & 0xf;
  37         ud->width = gc->xstate >> 4;
  38         memcpy(ud->data, gc->xdata, ud->size);
  39 }
  40
  41 /* Set cell data. */
  42 void
  43 grid_cell_set(struct grid_cell *gc, const struct utf8_data *ud)
  44 {
  45         memcpy(gc->xdata, ud->data, ud->size);
  46         gc->xstate = (ud->width << 4) | ud->size;
  47 }
  48
  49 /* Set a single character as cell data. */
  50 void
  51 grid_cell_one(struct grid_cell *gc, u_char ch)
  52 {
  53         *gc->xdata = ch;
  54         gc->xstate = (1 << 4) | 1;
  55 }