tmux/screen-redraw.c

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/* $Id: screen-redraw.c,v 1.17 2009-01-12 18:22:47 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"
void screen_redraw_blankx(struct client *, u_int, u_int);
void screen_redraw_blanky(struct client *, u_int, u_int);
void screen_redraw_line(struct client *, struct screen *, u_int, u_int);
/* Redraw entire screen.. */
void
screen_redraw_screen(struct client *c, struct screen *s)
{
struct window *w = c->session->curw->window;
struct window_pane *wp;
u_int i, cx, cy, sy;
int status;
/* Override the normal screen if one is given. */
if (s != NULL) {
for (i = 0; i < screen_size_y(s); i++)
screen_redraw_line(c, s, 0, i);
return;
}
/*
* A normal client screen is made up of three parts: a top window, a
* bottom window and a status line. The bottom window may be turned
* off; the status line is always drawn.
*/
/* Draw the top window. */
wp = w->panes[0];
s = wp->screen;
sy = screen_size_y(s);
if (screen_size_y(s) == c->sy && w->panes[1] == NULL)
sy--;
cx = s->cx;
cy = s->cy;
for (i = 0; i < sy; i++)
screen_redraw_line(c, s, wp->yoff, i);
s->cx = cx;
s->cy = cy;
/* Draw the bottom window. */
if (c->sy > 2 && w->panes[1] != NULL) {
wp = w->panes[1];
s = wp->screen;
sy = screen_size_y(s);
if (wp->yoff + screen_size_y(s) == s->cy)
sy--;
cx = s->cx;
cy = s->cy;
for (i = 0; i < sy; i++)
screen_redraw_line(c, s, wp->yoff, i);
s->cx = cx;
s->cy = cy;
}
/* Fill in empty space. */
if (w->sx < c->sx)
screen_redraw_blankx(c, w->sx, c->sx - w->sx);
if (w->sy < c->sy - status)
screen_redraw_blanky(c, w->sy, c->sy - w->sy);
/* Draw separator line. */
s = w->panes[0]->screen;
if (c->sy > 1 && screen_size_y(s) != w->sy)
screen_redraw_blanky(c, screen_size_y(s), 1);
/* Draw the status line. */
screen_redraw_status(c);
}
/* Draw the status line. */
void
screen_redraw_status(struct client *c)
{
screen_redraw_line(c, &c->status, c->sy - 1, 0);
}
/* Draw blank columns. */
void
screen_redraw_blankx(struct client *c, u_int ox, u_int nx)
{
u_int i, j;
tty_putcode(&c->tty, TTYC_SGR0);
for (j = 0; j < c->sy; j++) {
tty_putcode2(&c->tty, TTYC_CUP, j, ox);
for (i = 0; i < nx; i++)
tty_putc(&c->tty, ' ');
}
c->tty.cx = UINT_MAX;
c->tty.cy = UINT_MAX;
memcpy(&c->tty.cell, &grid_default_cell, sizeof c->tty.cell);
}
/* Draw blank lines. */
void
screen_redraw_blanky(struct client *c, u_int oy, u_int ny)
{
u_int i, j;
tty_putcode(&c->tty, TTYC_SGR0);
for (j = 0; j < ny; j++) {
tty_putcode2(&c->tty, TTYC_CUP, oy + j, 0);
for (i = 0; i < c->sx; i++) {
if (j == 0)
tty_putc(&c->tty, '-');
else
tty_putc(&c->tty, ' ');
}
}
c->tty.cx = UINT_MAX;
c->tty.cy = UINT_MAX;
memcpy(&c->tty.cell, &grid_default_cell, sizeof c->tty.cell);
}
/* Draw a line. */
void
screen_redraw_line(struct client *c, struct screen *s, u_int oy, u_int py)
{
const struct grid_cell *gc;
struct grid_cell tc;
u_int i, sx;
sx = screen_size_x(s);
if (sx > c->sx)
sx = c->sx;
for (i = 0; i < sx; i++) {
s->cx = i;
s->cy = py;
gc = grid_view_peek_cell(s->grid, i, py);
if (screen_check_selection(s, i, py)) {
memcpy(&tc, &s->sel.cell, sizeof tc);
tc.data = gc->data;
tty_write(&c->tty, s, oy, TTY_CELL, &tc);
} else
tty_write(&c->tty, s, oy, TTY_CELL, gc);
}
}