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/* $Id: screen-redraw.c,v 1.53 2010/09/18 15:43:53 tcunha 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_cell_border1(struct window_pane *, u_int, u_int);
int screen_redraw_cell_border(struct client *, u_int, u_int);
int screen_redraw_check_cell(struct client *, u_int, u_int);
void screen_redraw_draw_number(struct client *, struct window_pane *);
#define CELL_INSIDE 0
#define CELL_LEFTRIGHT 1
#define CELL_TOPBOTTOM 2
#define CELL_TOPLEFT 3
#define CELL_TOPRIGHT 4
#define CELL_BOTTOMLEFT 5
#define CELL_BOTTOMRIGHT 6
#define CELL_TOPJOIN 7
#define CELL_BOTTOMJOIN 8
#define CELL_LEFTJOIN 9
#define CELL_RIGHTJOIN 10
#define CELL_JOIN 11
#define CELL_OUTSIDE 12
#define CELL_BORDERS " xqlkmjwvtun~"
/* Check if cell is on the border of a particular pane. */
int
screen_redraw_cell_border1(struct window_pane *wp, u_int px, u_int py)
{
/* Inside pane. */
if (px >= wp->xoff && px < wp->xoff + wp->sx &&
py >= wp->yoff && py < wp->yoff + wp->sy)
return (0);
/* Left/right borders. */
if ((wp->yoff == 0 || py >= wp->yoff - 1) && 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 ((wp->xoff == 0 || px >= wp->xoff - 1) && px <= wp->xoff + wp->sx) {
if (wp->yoff != 0 && py == wp->yoff - 1)
return (1);
if (py == wp->yoff + wp->sy)
return (1);
}
/* Outside pane. */
return (-1);
}
/* Check if a cell is on the pane border. */
int
screen_redraw_cell_border(struct client *c, u_int px, u_int py)
{
struct window *w = c->session->curw->window;
struct window_pane *wp;
int retval;
/* Check all the panes. */
TAILQ_FOREACH(wp, &w->panes, entry) {
if (!window_pane_visible(wp))
continue;
if ((retval = screen_redraw_cell_border1(wp, px, py)) != -1)
return (retval);
}
return (0);
}
/* 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;
int borders;
if (px > w->sx || py > w->sy)
return (CELL_OUTSIDE);
TAILQ_FOREACH(wp, &w->panes, entry) {
if (!window_pane_visible(wp))
continue;
/* If outside the pane and its border, skip it. */
if ((wp->xoff != 0 && px < wp->xoff - 1) ||
px > wp->xoff + wp->sx ||
(wp->yoff != 0 && py < wp->yoff - 1) ||
py > wp->yoff + wp->sy)
continue;
/* If definitely inside, return so. */
if (!screen_redraw_cell_border(c, px, py))
return (CELL_INSIDE);
/*
* Construct a bitmask of whether the cells to the left (bit
* 4), right, top, and bottom (bit 1) of this cell are borders.
*/
borders = 0;
if (px == 0 || screen_redraw_cell_border(c, px - 1, py))
borders |= 8;
if (px <= w->sx && screen_redraw_cell_border(c, px + 1, py))
borders |= 4;
if (py == 0 || screen_redraw_cell_border(c, px, py - 1))
borders |= 2;
if (py <= w->sy && screen_redraw_cell_border(c, px, py + 1))
borders |= 1;
/*
* Figure out what kind of border this cell is. Only one bit
* set doesn't make sense (can't have a border cell with no
* others connected).
*/
switch (borders) {
case 15: /* 1111, left right top bottom */
return (CELL_JOIN);
case 14: /* 1110, left right top */
return (CELL_BOTTOMJOIN);
case 13: /* 1101, left right bottom */
return (CELL_TOPJOIN);
case 12: /* 1100, left right */
return (CELL_TOPBOTTOM);
case 11: /* 1011, left top bottom */
return (CELL_RIGHTJOIN);
case 10: /* 1010, left top */
return (CELL_BOTTOMRIGHT);
case 9: /* 1001, left bottom */
return (CELL_TOPRIGHT);
case 7: /* 0111, right top bottom */
return (CELL_LEFTJOIN);
case 6: /* 0110, right top */
return (CELL_BOTTOMLEFT);
case 5: /* 0101, right bottom */
return (CELL_TOPLEFT);
case 3: /* 0011, top bottom */
return (CELL_LEFTRIGHT);
}
}
return (CELL_OUTSIDE);
}
/* Redraw entire screen. */
void
screen_redraw_screen(struct client *c, int status_only, int borders_only)
{
struct window *w = c->session->curw->window;
struct tty *tty = &c->tty;
struct window_pane *wp;
struct grid_cell active_gc, other_gc;
u_int i, j, type;
int status, fg, bg;
/* Get status line, er, status. */
if (c->message_string != NULL || c->prompt_string != NULL)
status = 1;
else
status = options_get_number(&c->session->options, "status");
/* If only drawing status and it is present, don't need the rest. */
if (status_only && status) {
tty_draw_line(tty, &c->status, 0, 0, tty->sy - 1);
tty_reset(tty);
return;
}
/* Set up pane border attributes. */
memcpy(&other_gc, &grid_default_cell, sizeof other_gc);
memcpy(&active_gc, &grid_default_cell, sizeof active_gc);
active_gc.data = other_gc.data = 'x'; /* not space */
active_gc.attr = other_gc.attr = GRID_ATTR_CHARSET;
fg = options_get_number(&c->session->options, "pane-border-fg");
colour_set_fg(&other_gc, fg);
bg = options_get_number(&c->session->options, "pane-border-bg");
colour_set_bg(&other_gc, bg);
fg = options_get_number(&c->session->options, "pane-active-border-fg");
colour_set_fg(&active_gc, fg);
bg = options_get_number(&c->session->options, "pane-active-border-bg");
colour_set_bg(&active_gc, bg);
/* Draw background and borders. */
for (j = 0; j < tty->sy - status; j++) {
if (status_only && j != tty->sy - 1)
continue;
for (i = 0; i < tty->sx; i++) {
type = screen_redraw_check_cell(c, i, j);
if (type == CELL_INSIDE)
continue;
if (screen_redraw_cell_border1(w->active, i, j) == 1)
tty_attributes(tty, &active_gc);
else
tty_attributes(tty, &other_gc);
tty_cursor(tty, i, j);
tty_putc(tty, CELL_BORDERS[type]);
}
}
/* If only drawing borders, that's it. */
if (borders_only)
return;
/* Draw the panes, if necessary. */
TAILQ_FOREACH(wp, &w->panes, entry) {
if (!window_pane_visible(wp))
continue;
for (i = 0; i < wp->sy; i++) {
if (status_only && wp->yoff + i != tty->sy - 1)
continue;
tty_draw_line(tty, wp->screen, i, wp->xoff, wp->yoff);
}
if (c->flags & CLIENT_IDENTIFY)
screen_redraw_draw_number(c, wp);
}
/* Draw the status line. */
if (status)
tty_draw_line(tty, &c->status, 0, 0, tty->sy - 1);
tty_reset(tty);
}
/* 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);
tty_reset(&c->tty);
}
/* Draw number on a pane. */
void
screen_redraw_draw_number(struct client *c, struct window_pane *wp)
{
struct tty *tty = &c->tty;
struct session *s = c->session;
struct options *oo = &s->options;
struct window *w = wp->window;
struct grid_cell gc;
u_int idx, px, py, i, j, xoff, yoff;
int colour, active_colour;
char buf[16], *ptr;
size_t len;
idx = window_pane_index(w, wp);
len = xsnprintf(buf, sizeof buf, "%u", idx);
if (wp->sx < len)
return;
colour = options_get_number(oo, "display-panes-colour");
active_colour = options_get_number(oo, "display-panes-active-colour");
px = wp->sx / 2; py = wp->sy / 2;
xoff = wp->xoff; yoff = wp->yoff;
if (wp->sx < len * 6 || wp->sy < 5) {
tty_cursor(tty, xoff + px - len / 2, yoff + py);
memcpy(&gc, &grid_default_cell, sizeof gc);
gc.data = '_'; /* not space */
if (w->active == wp)
colour_set_fg(&gc, active_colour);
else
colour_set_fg(&gc, colour);
tty_attributes(tty, &gc);
tty_puts(tty, buf);
return;
}
px -= len * 3;
py -= 2;
memcpy(&gc, &grid_default_cell, sizeof gc);
gc.data = '_'; /* not space */
if (w->active == wp)
colour_set_bg(&gc, active_colour);
else
colour_set_bg(&gc, colour);
tty_attributes(tty, &gc);
for (ptr = buf; *ptr != '\0'; ptr++) {
if (*ptr < '0' || *ptr > '9')
continue;
idx = *ptr - '0';
for (j = 0; j < 5; j++) {
for (i = px; i < px + 5; i++) {
tty_cursor(tty, xoff + i, yoff + py + j);
if (clock_table[idx][j][i - px])
tty_putc(tty, ' ');
}
}
px += 6;
}
}
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