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/* $OpenBSD: screen-redraw.c,v 1.2 2009/06/25 05:56:44 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
#include "tmux.h"
int screen_redraw_check_cell(struct client *, u_int, u_int);
/* Check if cell inside a pane. */
int
screen_redraw_check_cell(struct client *c, u_int px, u_int py)
{
struct window *w = c->session->curw->window;
struct window_pane *wp;
if (px > w->sx || py > w->sy)
return (0);
TAILQ_FOREACH(wp, &w->panes, entry) {
/* Inside pane. */
if (px >= wp->xoff && px < wp->xoff + wp->sx &&
py >= wp->yoff && py < wp->yoff + wp->sy)
return (1);
/* Left/right borders. */
if (py >= wp->yoff && py < wp->yoff + wp->sy) {
if (wp->xoff != 0 && px == wp->xoff - 1)
return (1);
if (px == wp->xoff + wp->sx)
return (1);
}
/* Top/bottom borders. */
if (px >= wp->xoff && px < wp->xoff + wp->sx) {
if (wp->yoff != 0 && py == wp->yoff - 1)
return (1);
if (py == wp->yoff + wp->sy)
return (1);
}
}
return (0);
}
/* Redraw entire screen.. */
void
screen_redraw_screen(struct client *c)
{
struct window *w = c->session->curw->window;
struct tty *tty = &c->tty;
struct window_pane *wp;
u_int i, j, sx, sy;
int status, has_acs;
u_char choriz, cvert, cbackg;
/* Get status line, er, status. */
status = options_get_number(&c->session->options, "status");
/* Work out ACS characters. */
if (tty_term_has(tty->term, TTYC_ACSC)) {
has_acs = 1;
choriz = tty_get_acs(tty, 'q');
cvert = tty_get_acs(tty, 'x');
cbackg = tty_get_acs(tty, '~');
} else {
has_acs = 0;
choriz = '-';
cvert = '|';
cbackg = '.';
}
/* Clear the screen. */
tty_reset(tty);
if (has_acs)
tty_putcode(tty, TTYC_SMACS);
for (j = 0; j < tty->sy - status; j++) {
for (i = 0; i < tty->sx; i++) {
if (!screen_redraw_check_cell(c, i, j)) {
tty_cursor(tty, i, j, 0, 0);
tty_putc(tty, cbackg);
}
}
}
if (has_acs)
tty_putcode(tty, TTYC_RMACS);
/* Draw the panes. */
TAILQ_FOREACH(wp, &w->panes, entry) {
if (wp->flags & PANE_HIDDEN)
continue;
tty_reset(tty);
sx = wp->sx;
sy = wp->sy;
/* Draw left and right borders. */
if (has_acs)
tty_putcode(tty, TTYC_SMACS);
if (wp->xoff > 0) {
for (i = wp->yoff; i < wp->yoff + sy; i++) {
tty_cursor(tty, wp->xoff - 1, i, 0, 0);
tty_putc(tty, cvert);
}
}
if (wp->xoff + sx < tty->sx) {
for (i = wp->yoff; i < wp->yoff + sy; i++) {
tty_cursor(tty, wp->xoff + sx, i, 0, 0);
tty_putc(&c->tty, cvert);
}
}
/* Draw top and bottom borders. */
if (wp->yoff > 0) {
tty_cursor(tty, wp->xoff, wp->yoff - 1, 0, 0);
for (i = 0; i < sx; i++)
tty_putc(tty, choriz);
}
if (wp->yoff + sy < tty->sy - status) {
tty_cursor(tty, wp->xoff, wp->yoff + sy, 0, 0);
for (i = 0; i < sx; i++)
tty_putc(tty, choriz);
}
if (has_acs)
tty_putcode(tty, TTYC_RMACS);
/* Draw the pane. */
screen_redraw_pane(c, wp);
}
/* Draw the status line. */
screen_redraw_status(c);
}
/* Draw a single pane. */
void
screen_redraw_pane(struct client *c, struct window_pane *wp)
{
u_int i;
for (i = 0; i < wp->sy; i++)
tty_draw_line(&c->tty, wp->screen, i, wp->xoff, wp->yoff);
}
/* Draw the status line. */
void
screen_redraw_status(struct client *c)
{
tty_draw_line(&c->tty, &c->status, 0, 0, c->tty.sy - 1);
}
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