Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/tmux/screen-redraw.c	Lines:	0	276	0.0 %
Date:	2016-12-06	Branches:	0	256	0.0 %


/* $OpenBSD: screen-redraw.c,v 1.37 2016/07/15 00:42:56 nicm Exp $ */

/*
 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 *
 * 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, int,
	    struct window_pane **);
int	screen_redraw_check_is(u_int, u_int, int, int, struct window *,
	    struct window_pane *, struct window_pane *);

int 	screen_redraw_make_pane_status(struct client *, struct window *,
	    struct window_pane *);
void	screen_redraw_draw_pane_status(struct client *, int);

void	screen_redraw_draw_borders(struct client *, int, int, u_int);
void	screen_redraw_draw_panes(struct client *, u_int);
void	screen_redraw_draw_status(struct client *, u_int);
void	screen_redraw_draw_number(struct client *, struct window_pane *, u_int);

#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~"

#define CELL_STATUS_OFF 0
#define CELL_STATUS_TOP 1
#define CELL_STATUS_BOTTOM 2

/* 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 (2);
	}

	/* 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 (3);
		if (py == wp->yoff + wp->sy)
			return (4);
	}

	/* 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, int pane_status,
    struct window_pane **wpp)
{
	struct window		*w = c->session->curw->window;
	struct window_pane	*wp;
	int			 borders;
	u_int			 right, line;

	if (px > w->sx || py > w->sy)
		return (CELL_OUTSIDE);

	if (pane_status != CELL_STATUS_OFF) {
		TAILQ_FOREACH(wp, &w->panes, entry) {
			if (!window_pane_visible(wp))
				continue;

			if (pane_status == CELL_STATUS_TOP)
				line = wp->yoff - 1;
			else
				line = wp->yoff + wp->sy;
			right = wp->xoff + 2 + wp->status_size - 1;

			if (py == line && px >= wp->xoff + 2 && px <= right)
				return (CELL_INSIDE);
		}
	}

	TAILQ_FOREACH(wp, &w->panes, entry) {
		if (!window_pane_visible(wp))
			continue;
		*wpp = wp;

		/* 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 (pane_status == CELL_STATUS_TOP) {
			if (py != 0 && screen_redraw_cell_border(c, px, py - 1))
				borders |= 2;
		} else {
			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);
		}
	}

	*wpp = NULL;
	return (CELL_OUTSIDE);
}

/* Check if the border of a particular pane. */
int
screen_redraw_check_is(u_int px, u_int py, int type, int pane_status,
    struct window *w, struct window_pane *wantwp, struct window_pane *wp)
{
	int	border;

	/* Is this off the active pane border? */
	border = screen_redraw_cell_border1(wantwp, px, py);
	if (border == 0 || border == -1)
		return (0);
	if (pane_status == CELL_STATUS_TOP && border == 4)
		return (0);
	if (pane_status == CELL_STATUS_BOTTOM && border == 3)
		return (0);

	/* If there are more than two panes, that's enough. */
	if (window_count_panes(w) != 2)
		return (1);

	/* Else if the cell is not a border cell, forget it. */
	if (wp == NULL || (type == CELL_OUTSIDE || type == CELL_INSIDE))
		return (1);

	/* With status lines mark the entire line. */
	if (pane_status != CELL_STATUS_OFF)
		return (1);

	/* Check if the pane covers the whole width. */
	if (wp->xoff == 0 && wp->sx == w->sx) {
		/* This can either be the top pane or the bottom pane. */
		if (wp->yoff == 0) { /* top pane */
			if (wp == wantwp)
				return (px <= wp->sx / 2);
			return (px > wp->sx / 2);
		}
		return (0);
	}

	/* Check if the pane covers the whole height. */
	if (wp->yoff == 0 && wp->sy == w->sy) {
		/* This can either be the left pane or the right pane. */
		if (wp->xoff == 0) { /* left pane */
			if (wp == wantwp)
				return (py <= wp->sy / 2);
			return (py > wp->sy / 2);
		}
		return (0);
	}

	return (1);
}

/* Update pane status. */
int
screen_redraw_make_pane_status(struct client *c, struct window *w,
    struct window_pane *wp)
{
	struct grid_cell	 gc;
	const char		*fmt;
	struct format_tree	*ft;
	char			*out;
	size_t			 outlen, old_size = wp->status_size;
	struct screen_write_ctx	 ctx;

	if (wp == w->active)
		style_apply(&gc, w->options, "pane-active-border-style");
	else
		style_apply(&gc, w->options, "pane-border-style");

	fmt = options_get_string(w->options, "pane-border-format");

	ft = format_create(NULL, 0);
	format_defaults(ft, c, NULL, NULL, wp);

	screen_free(&wp->status_screen);
	screen_init(&wp->status_screen, wp->sx, 1, 0);
	wp->status_screen.mode = 0;

	out = format_expand(ft, fmt);
	outlen = screen_write_cstrlen("%s", out);
	if (outlen > wp->sx - 4)
		outlen = wp->sx - 4;
	screen_resize(&wp->status_screen, outlen, 1, 0);

	screen_write_start(&ctx, NULL, &wp->status_screen);
	screen_write_cursormove(&ctx, 0, 0);
	screen_write_clearline(&ctx);
	screen_write_cnputs(&ctx, outlen, &gc, "%s", out);
	screen_write_stop(&ctx);

	format_free(ft);

	wp->status_size = outlen;
	return (wp->status_size != old_size);
}

/* Draw pane status. */
void
screen_redraw_draw_pane_status(struct client *c, int pane_status)
{
	struct window		*w = c->session->curw->window;
	struct options		*oo = c->session->options;
	struct tty		*tty = &c->tty;
	struct window_pane	*wp;
	int			 spos;
	u_int			 yoff;

	spos = options_get_number(oo, "status-position");
	TAILQ_FOREACH(wp, &w->panes, entry) {
		if (pane_status == CELL_STATUS_TOP)
			yoff = wp->yoff - 1;
		else
			yoff = wp->yoff + wp->sy;
		if (spos == 0)
			yoff += 1;

		tty_draw_line(tty, NULL, &wp->status_screen, 0, wp->xoff + 2,
		    yoff);
	}
	tty_cursor(tty, 0, 0);
}

/* Redraw entire screen. */
void
screen_redraw_screen(struct client *c, int draw_panes, int draw_status,
    int draw_borders)
{
	struct options		*oo = c->session->options;
	struct tty		*tty = &c->tty;
	struct window		*w = c->session->curw->window;
	struct window_pane	*wp;
	u_int			 top;
	int	 		 status, pane_status, spos;

	/* Suspended clients should not be updated. */
	if (c->flags & CLIENT_SUSPENDED)
		return;

	/* Get status line, er, status. */
	spos = options_get_number(oo, "status-position");
	if (c->message_string != NULL || c->prompt_string != NULL)
		status = 1;
	else
		status = options_get_number(oo, "status");
	top = 0;
	if (status && spos == 0)
		top = 1;
	if (!status)
		draw_status = 0;

	/* Update pane status lines. */
	pane_status = options_get_number(w->options, "pane-border-status");
	if (pane_status != CELL_STATUS_OFF && (draw_borders || draw_status)) {
		TAILQ_FOREACH(wp, &w->panes, entry) {
			if (screen_redraw_make_pane_status(c, w, wp))
				draw_borders = draw_status = 1;
		}
	}

	/* Draw the elements. */
	if (draw_borders)
		screen_redraw_draw_borders(c, status, pane_status, top);
	if (draw_panes)
		screen_redraw_draw_panes(c, top);
	if (draw_status)
		screen_redraw_draw_status(c, top);
	if (pane_status != CELL_STATUS_OFF && (draw_borders || draw_status))
		screen_redraw_draw_pane_status(c, pane_status);
	tty_reset(tty);
}

/* Draw a single pane. */
void
screen_redraw_pane(struct client *c, struct window_pane *wp)
{
	u_int	i, yoff;

	if (!window_pane_visible(wp))
		return;

	yoff = wp->yoff;
	if (status_at_line(c) == 0)
		yoff++;

	for (i = 0; i < wp->sy; i++)
		tty_draw_pane(&c->tty, wp, i, wp->xoff, yoff);
	tty_reset(&c->tty);
}

/* Draw the borders. */
void
screen_redraw_draw_borders(struct client *c, int status, int pane_status,
    u_int top)
{
	struct session		*s = c->session;
	struct window		*w = s->curw->window;
	struct options		*oo = w->options;
	struct tty		*tty = &c->tty;
	struct window_pane	*wp;
	struct grid_cell	 m_active_gc, active_gc, m_other_gc, other_gc;
	struct grid_cell	 msg_gc;
	u_int		 	 i, j, type, msgx = 0, msgy = 0;
	int			 active, small, flags;
	char			 msg[256];
	const char		*tmp;
	size_t			 msglen = 0;

	small = (tty->sy - status + top > w->sy) || (tty->sx > w->sx);
	if (small) {
		flags = w->flags & (WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT);
		if (flags == (WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT))
			tmp = "force-width, force-height";
		else if (flags == WINDOW_FORCEWIDTH)
			tmp = "force-width";
		else if (flags == WINDOW_FORCEHEIGHT)
			tmp = "force-height";
		else
			tmp = "a smaller client";
		xsnprintf(msg, sizeof msg, "(size %ux%u from %s)",
		    w->sx, w->sy, tmp);
		msglen = strlen(msg);

		if (tty->sy - 1 - status + top > w->sy && tty->sx >= msglen) {
			msgx = tty->sx - msglen;
			msgy = tty->sy - 1 - status + top;
		} else if (tty->sx - w->sx > msglen) {
			msgx = tty->sx - msglen;
			msgy = tty->sy - 1 - status + top;
		} else
			small = 0;
	}

	style_apply(&other_gc, oo, "pane-border-style");
	style_apply(&active_gc, oo, "pane-active-border-style");
	active_gc.attr = other_gc.attr = GRID_ATTR_CHARSET;

	memcpy(&m_other_gc, &other_gc, sizeof m_other_gc);
	m_other_gc.attr ^= GRID_ATTR_REVERSE;
	memcpy(&m_active_gc, &active_gc, sizeof m_active_gc);
	m_active_gc.attr ^= GRID_ATTR_REVERSE;

	for (j = 0; j < tty->sy - status; j++) {
		for (i = 0; i < tty->sx; i++) {
			type = screen_redraw_check_cell(c, i, j, pane_status,
			    &wp);
			if (type == CELL_INSIDE)
				continue;
			if (type == CELL_OUTSIDE && small &&
			    i > msgx && j == msgy)
				continue;
			active = screen_redraw_check_is(i, j, type, pane_status,
			    w, w->active, wp);
			if (server_is_marked(s, s->curw, marked_pane.wp) &&
			    screen_redraw_check_is(i, j, type, pane_status, w,
			    marked_pane.wp, wp)) {
				if (active)
					tty_attributes(tty, &m_active_gc, NULL);
				else
					tty_attributes(tty, &m_other_gc, NULL);
			} else if (active)
				tty_attributes(tty, &active_gc, NULL);
			else
				tty_attributes(tty, &other_gc, NULL);
			tty_cursor(tty, i, top + j);
			tty_putc(tty, CELL_BORDERS[type]);
		}
	}

	if (small) {
		memcpy(&msg_gc, &grid_default_cell, sizeof msg_gc);
		tty_attributes(tty, &msg_gc, NULL);
		tty_cursor(tty, msgx, msgy);
		tty_puts(tty, msg);
	}
}

/* Draw the panes. */
void
screen_redraw_draw_panes(struct client *c, u_int top)
{
	struct window		*w = c->session->curw->window;
	struct tty		*tty = &c->tty;
	struct window_pane	*wp;
	u_int		 	 i;

	TAILQ_FOREACH(wp, &w->panes, entry) {
		if (!window_pane_visible(wp))
			continue;
		for (i = 0; i < wp->sy; i++)
			tty_draw_pane(tty, wp, i, wp->xoff, top + wp->yoff);
		if (c->flags & CLIENT_IDENTIFY)
			screen_redraw_draw_number(c, wp, top);
	}
}

/* Draw the status line. */
void
screen_redraw_draw_status(struct client *c, u_int top)
{
	struct tty	*tty = &c->tty;

	if (top)
		tty_draw_line(tty, NULL, &c->status, 0, 0, 0);
	else
		tty_draw_line(tty, NULL, &c->status, 0, 0, tty->sy - 1);
}

/* Draw number on a pane. */
void
screen_redraw_draw_number(struct client *c, struct window_pane *wp, u_int top)
{
	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;

	if (window_pane_index(wp, &idx) != 0)
		fatalx("index not found");
	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 (top)
		yoff++;

	if (wp->sx < len * 6 || wp->sy < 5) {
		tty_cursor(tty, xoff + px - len / 2, yoff + py);
		goto draw_text;
	}

	px -= len * 3;
	py -= 2;

	memcpy(&gc, &grid_default_cell, sizeof gc);
	if (w->active == wp)
		gc.bg = active_colour;
	else
		gc.bg = colour;
	tty_attributes(tty, &gc, wp);
	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 (window_clock_table[idx][j][i - px])
					tty_putc(tty, ' ');
			}
		}
		px += 6;
	}

	len = xsnprintf(buf, sizeof buf, "%ux%u", wp->sx, wp->sy);
	if (wp->sx < len || wp->sy < 6)
		return;
	tty_cursor(tty, xoff + wp->sx - len, yoff);

draw_text:
	memcpy(&gc, &grid_default_cell, sizeof gc);
	if (w->active == wp)
		gc.fg = active_colour;
	else
		gc.fg = colour;
	tty_attributes(tty, &gc, wp);
	tty_puts(tty, buf);

	tty_cursor(tty, 0, 0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: screen-redraw.c,v 1.37 2016/07/15 00:42:56 nicm Exp $ */
2
3			/*
4			* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
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			int screen_redraw_cell_border1(struct window_pane *, u_int, u_int);
26			int screen_redraw_cell_border(struct client *, u_int, u_int);
27			int screen_redraw_check_cell(struct client *, u_int, u_int, int,
28			struct window_pane **);
29			int screen_redraw_check_is(u_int, u_int, int, int, struct window *,
30			struct window_pane , struct window_pane );
31
32			int screen_redraw_make_pane_status(struct client , struct window ,
33			struct window_pane *);
34			void screen_redraw_draw_pane_status(struct client *, int);
35
36			void screen_redraw_draw_borders(struct client *, int, int, u_int);
37			void screen_redraw_draw_panes(struct client *, u_int);
38			void screen_redraw_draw_status(struct client *, u_int);
39			void screen_redraw_draw_number(struct client , struct window_pane , u_int);
40
41			#define CELL_INSIDE 0
42			#define CELL_LEFTRIGHT 1
43			#define CELL_TOPBOTTOM 2
44			#define CELL_TOPLEFT 3
45			#define CELL_TOPRIGHT 4
46			#define CELL_BOTTOMLEFT 5
47			#define CELL_BOTTOMRIGHT 6
48			#define CELL_TOPJOIN 7
49			#define CELL_BOTTOMJOIN 8
50			#define CELL_LEFTJOIN 9
51			#define CELL_RIGHTJOIN 10
52			#define CELL_JOIN 11
53			#define CELL_OUTSIDE 12
54
55			#define CELL_BORDERS " xqlkmjwvtun~"
56
57			#define CELL_STATUS_OFF 0
58			#define CELL_STATUS_TOP 1
59			#define CELL_STATUS_BOTTOM 2
60
61			/* Check if cell is on the border of a particular pane. */
62			int
63			screen_redraw_cell_border1(struct window_pane *wp, u_int px, u_int py)
64			{
65			/* Inside pane. */
66			if (px >= wp->xoff && px < wp->xoff + wp->sx &&
67			py >= wp->yoff && py < wp->yoff + wp->sy)
68			return (0);
69
70			/* Left/right borders. */
71			if ((wp->yoff == 0 \|\| py >= wp->yoff - 1) && py <= wp->yoff + wp->sy) {
72			if (wp->xoff != 0 && px == wp->xoff - 1)
73			return (1);
74			if (px == wp->xoff + wp->sx)
75			return (2);
76			}
77
78			/* Top/bottom borders. */
79			if ((wp->xoff == 0 \|\| px >= wp->xoff - 1) && px <= wp->xoff + wp->sx) {
80			if (wp->yoff != 0 && py == wp->yoff - 1)
81			return (3);
82			if (py == wp->yoff + wp->sy)
83			return (4);
84			}
85
86			/* Outside pane. */
87			return (-1);
88			}
89
90			/* Check if a cell is on the pane border. */
91			int
92			screen_redraw_cell_border(struct client *c, u_int px, u_int py)
93			{
94			struct window *w = c->session->curw->window;
95			struct window_pane *wp;
96			int retval;
97
98			/* Check all the panes. */
99			TAILQ_FOREACH(wp, &w->panes, entry) {
100			if (!window_pane_visible(wp))
101			continue;
102			if ((retval = screen_redraw_cell_border1(wp, px, py)) != -1)
103			return (!!retval);
104			}
105
106			return (0);
107			}
108
109			/* Check if cell inside a pane. */
110			int
111			screen_redraw_check_cell(struct client *c, u_int px, u_int py, int pane_status,
112			struct window_pane **wpp)
113			{
114			struct window *w = c->session->curw->window;
115			struct window_pane *wp;
116			int borders;
117			u_int right, line;
118
119			if (px > w->sx \|\| py > w->sy)
120			return (CELL_OUTSIDE);
121
122			if (pane_status != CELL_STATUS_OFF) {
123			TAILQ_FOREACH(wp, &w->panes, entry) {
124			if (!window_pane_visible(wp))
125			continue;
126
127			if (pane_status == CELL_STATUS_TOP)
128			line = wp->yoff - 1;
129			else
130			line = wp->yoff + wp->sy;
131			right = wp->xoff + 2 + wp->status_size - 1;
132
133			if (py == line && px >= wp->xoff + 2 && px <= right)
134			return (CELL_INSIDE);
135			}
136			}
137
138			TAILQ_FOREACH(wp, &w->panes, entry) {
139			if (!window_pane_visible(wp))
140			continue;
141			*wpp = wp;
142
143			/* If outside the pane and its border, skip it. */
144			if ((wp->xoff != 0 && px < wp->xoff - 1) \|\|
145			px > wp->xoff + wp->sx \|\|
146			(wp->yoff != 0 && py < wp->yoff - 1) \|\|
147			py > wp->yoff + wp->sy)
148			continue;
149
150			/* If definitely inside, return so. */
151			if (!screen_redraw_cell_border(c, px, py))
152			return (CELL_INSIDE);
153
154			/*
155			* Construct a bitmask of whether the cells to the left (bit
156			* 4), right, top, and bottom (bit 1) of this cell are borders.
157			*/
158			borders = 0;
159			if (px == 0 \|\| screen_redraw_cell_border(c, px - 1, py))
160			borders \|= 8;
161			if (px <= w->sx && screen_redraw_cell_border(c, px + 1, py))
162			borders \|= 4;
163			if (pane_status == CELL_STATUS_TOP) {
164			if (py != 0 && screen_redraw_cell_border(c, px, py - 1))
165			borders \|= 2;
166			} else {
167			if (py == 0 \|\| screen_redraw_cell_border(c, px, py - 1))
168			borders \|= 2;
169			}
170			if (py <= w->sy && screen_redraw_cell_border(c, px, py + 1))
171			borders \|= 1;
172
173			/*
174			* Figure out what kind of border this cell is. Only one bit
175			* set doesn't make sense (can't have a border cell with no
176			* others connected).
177			*/
178			switch (borders) {
179			case 15: /* 1111, left right top bottom */
180			return (CELL_JOIN);
181			case 14: /* 1110, left right top */
182			return (CELL_BOTTOMJOIN);
183			case 13: /* 1101, left right bottom */
184			return (CELL_TOPJOIN);
185			case 12: /* 1100, left right */
186			return (CELL_TOPBOTTOM);
187			case 11: /* 1011, left top bottom */
188			return (CELL_RIGHTJOIN);
189			case 10: /* 1010, left top */
190			return (CELL_BOTTOMRIGHT);
191			case 9: /* 1001, left bottom */
192			return (CELL_TOPRIGHT);
193			case 7: /* 0111, right top bottom */
194			return (CELL_LEFTJOIN);
195			case 6: /* 0110, right top */
196			return (CELL_BOTTOMLEFT);
197			case 5: /* 0101, right bottom */
198			return (CELL_TOPLEFT);
199			case 3: /* 0011, top bottom */
200			return (CELL_LEFTRIGHT);
201			}
202			}
203
204			*wpp = NULL;
205			return (CELL_OUTSIDE);
206			}
207
208			/* Check if the border of a particular pane. */
209			int
210			screen_redraw_check_is(u_int px, u_int py, int type, int pane_status,
211			struct window w, struct window_pane wantwp, struct window_pane *wp)
212			{
213			int border;
214
215			/* Is this off the active pane border? */
216			border = screen_redraw_cell_border1(wantwp, px, py);
217			if (border == 0 \|\| border == -1)
218			return (0);
219			if (pane_status == CELL_STATUS_TOP && border == 4)
220			return (0);
221			if (pane_status == CELL_STATUS_BOTTOM && border == 3)
222			return (0);
223
224			/* If there are more than two panes, that's enough. */
225			if (window_count_panes(w) != 2)
226			return (1);
227
228			/* Else if the cell is not a border cell, forget it. */
229			if (wp == NULL \|\| (type == CELL_OUTSIDE \|\| type == CELL_INSIDE))
230			return (1);
231
232			/* With status lines mark the entire line. */
233			if (pane_status != CELL_STATUS_OFF)
234			return (1);
235
236			/* Check if the pane covers the whole width. */
237			if (wp->xoff == 0 && wp->sx == w->sx) {
238			/* This can either be the top pane or the bottom pane. */
239			if (wp->yoff == 0) { /* top pane */
240			if (wp == wantwp)
241			return (px <= wp->sx / 2);
242			return (px > wp->sx / 2);
243			}
244			return (0);
245			}
246
247			/* Check if the pane covers the whole height. */
248			if (wp->yoff == 0 && wp->sy == w->sy) {
249			/* This can either be the left pane or the right pane. */
250			if (wp->xoff == 0) { /* left pane */
251			if (wp == wantwp)
252			return (py <= wp->sy / 2);
253			return (py > wp->sy / 2);
254			}
255			return (0);
256			}
257
258			return (1);
259			}
260
261			/* Update pane status. */
262			int
263			screen_redraw_make_pane_status(struct client c, struct window w,
264			struct window_pane *wp)
265			{
266			struct grid_cell gc;
267			const char *fmt;
268			struct format_tree *ft;
269			char *out;
270			size_t outlen, old_size = wp->status_size;
271			struct screen_write_ctx ctx;
272
273			if (wp == w->active)
274			style_apply(&gc, w->options, "pane-active-border-style");
275			else
276			style_apply(&gc, w->options, "pane-border-style");
277
278			fmt = options_get_string(w->options, "pane-border-format");
279
280			ft = format_create(NULL, 0);
281			format_defaults(ft, c, NULL, NULL, wp);
282
283			screen_free(&wp->status_screen);
284			screen_init(&wp->status_screen, wp->sx, 1, 0);
285			wp->status_screen.mode = 0;
286
287			out = format_expand(ft, fmt);
288			outlen = screen_write_cstrlen("%s", out);
289			if (outlen > wp->sx - 4)
290			outlen = wp->sx - 4;
291			screen_resize(&wp->status_screen, outlen, 1, 0);
292
293			screen_write_start(&ctx, NULL, &wp->status_screen);
294			screen_write_cursormove(&ctx, 0, 0);
295			screen_write_clearline(&ctx);
296			screen_write_cnputs(&ctx, outlen, &gc, "%s", out);
297			screen_write_stop(&ctx);
298
299			format_free(ft);
300
301			wp->status_size = outlen;
302			return (wp->status_size != old_size);
303			}
304
305			/* Draw pane status. */
306			void
307			screen_redraw_draw_pane_status(struct client *c, int pane_status)
308			{
309			struct window *w = c->session->curw->window;
310			struct options *oo = c->session->options;
311			struct tty *tty = &c->tty;
312			struct window_pane *wp;
313			int spos;
314			u_int yoff;
315
316			spos = options_get_number(oo, "status-position");
317			TAILQ_FOREACH(wp, &w->panes, entry) {
318			if (pane_status == CELL_STATUS_TOP)
319			yoff = wp->yoff - 1;
320			else
321			yoff = wp->yoff + wp->sy;
322			if (spos == 0)
323			yoff += 1;
324
325			tty_draw_line(tty, NULL, &wp->status_screen, 0, wp->xoff + 2,
326			yoff);
327			}
328			tty_cursor(tty, 0, 0);
329			}
330
331			/* Redraw entire screen. */
332			void
333			screen_redraw_screen(struct client *c, int draw_panes, int draw_status,
334			int draw_borders)
335			{
336			struct options *oo = c->session->options;
337			struct tty *tty = &c->tty;
338			struct window *w = c->session->curw->window;
339			struct window_pane *wp;
340			u_int top;
341			int status, pane_status, spos;
342
343			/* Suspended clients should not be updated. */
344			if (c->flags & CLIENT_SUSPENDED)
345			return;
346
347			/* Get status line, er, status. */
348			spos = options_get_number(oo, "status-position");
349			if (c->message_string != NULL \|\| c->prompt_string != NULL)
350			status = 1;
351			else
352			status = options_get_number(oo, "status");
353			top = 0;
354			if (status && spos == 0)
355			top = 1;
356			if (!status)
357			draw_status = 0;
358
359			/* Update pane status lines. */
360			pane_status = options_get_number(w->options, "pane-border-status");
361			if (pane_status != CELL_STATUS_OFF && (draw_borders \|\| draw_status)) {
362			TAILQ_FOREACH(wp, &w->panes, entry) {
363			if (screen_redraw_make_pane_status(c, w, wp))
364			draw_borders = draw_status = 1;
365			}
366			}
367
368			/* Draw the elements. */
369			if (draw_borders)
370			screen_redraw_draw_borders(c, status, pane_status, top);
371			if (draw_panes)
372			screen_redraw_draw_panes(c, top);
373			if (draw_status)
374			screen_redraw_draw_status(c, top);
375			if (pane_status != CELL_STATUS_OFF && (draw_borders \|\| draw_status))
376			screen_redraw_draw_pane_status(c, pane_status);
377			tty_reset(tty);
378			}
379
380			/* Draw a single pane. */
381			void
382			screen_redraw_pane(struct client c, struct window_pane wp)
383			{
384			u_int i, yoff;
385
386			if (!window_pane_visible(wp))
387			return;
388
389			yoff = wp->yoff;
390			if (status_at_line(c) == 0)
391			yoff++;
392
393			for (i = 0; i < wp->sy; i++)
394			tty_draw_pane(&c->tty, wp, i, wp->xoff, yoff);
395			tty_reset(&c->tty);
396			}
397
398			/* Draw the borders. */
399			void
400			screen_redraw_draw_borders(struct client *c, int status, int pane_status,
401			u_int top)
402			{
403			struct session *s = c->session;
404			struct window *w = s->curw->window;
405			struct options *oo = w->options;
406			struct tty *tty = &c->tty;
407			struct window_pane *wp;
408			struct grid_cell m_active_gc, active_gc, m_other_gc, other_gc;
409			struct grid_cell msg_gc;
410			u_int i, j, type, msgx = 0, msgy = 0;
411			int active, small, flags;
412			char msg[256];
413			const char *tmp;
414			size_t msglen = 0;
415
416			small = (tty->sy - status + top > w->sy) \|\| (tty->sx > w->sx);
417			if (small) {
418			flags = w->flags & (WINDOW_FORCEWIDTH\|WINDOW_FORCEHEIGHT);
419			if (flags == (WINDOW_FORCEWIDTH\|WINDOW_FORCEHEIGHT))
420			tmp = "force-width, force-height";
421			else if (flags == WINDOW_FORCEWIDTH)
422			tmp = "force-width";
423			else if (flags == WINDOW_FORCEHEIGHT)
424			tmp = "force-height";
425			else
426			tmp = "a smaller client";
427			xsnprintf(msg, sizeof msg, "(size %ux%u from %s)",
428			w->sx, w->sy, tmp);
429			msglen = strlen(msg);
430
431			if (tty->sy - 1 - status + top > w->sy && tty->sx >= msglen) {
432			msgx = tty->sx - msglen;
433			msgy = tty->sy - 1 - status + top;
434			} else if (tty->sx - w->sx > msglen) {
435			msgx = tty->sx - msglen;
436			msgy = tty->sy - 1 - status + top;
437			} else
438			small = 0;
439			}
440
441			style_apply(&other_gc, oo, "pane-border-style");
442			style_apply(&active_gc, oo, "pane-active-border-style");
443			active_gc.attr = other_gc.attr = GRID_ATTR_CHARSET;
444
445			memcpy(&m_other_gc, &other_gc, sizeof m_other_gc);
446			m_other_gc.attr ^= GRID_ATTR_REVERSE;
447			memcpy(&m_active_gc, &active_gc, sizeof m_active_gc);
448			m_active_gc.attr ^= GRID_ATTR_REVERSE;
449
450			for (j = 0; j < tty->sy - status; j++) {
451			for (i = 0; i < tty->sx; i++) {
452			type = screen_redraw_check_cell(c, i, j, pane_status,
453			&wp);
454			if (type == CELL_INSIDE)
455			continue;
456			if (type == CELL_OUTSIDE && small &&
457			i > msgx && j == msgy)
458			continue;
459			active = screen_redraw_check_is(i, j, type, pane_status,
460			w, w->active, wp);
461			if (server_is_marked(s, s->curw, marked_pane.wp) &&
462			screen_redraw_check_is(i, j, type, pane_status, w,
463			marked_pane.wp, wp)) {
464			if (active)
465			tty_attributes(tty, &m_active_gc, NULL);
466			else
467			tty_attributes(tty, &m_other_gc, NULL);
468			} else if (active)
469			tty_attributes(tty, &active_gc, NULL);
470			else
471			tty_attributes(tty, &other_gc, NULL);
472			tty_cursor(tty, i, top + j);
473			tty_putc(tty, CELL_BORDERS[type]);
474			}
475			}
476
477			if (small) {
478			memcpy(&msg_gc, &grid_default_cell, sizeof msg_gc);
479			tty_attributes(tty, &msg_gc, NULL);
480			tty_cursor(tty, msgx, msgy);
481			tty_puts(tty, msg);
482			}
483			}
484
485			/* Draw the panes. */
486			void
487			screen_redraw_draw_panes(struct client *c, u_int top)
488			{
489			struct window *w = c->session->curw->window;
490			struct tty *tty = &c->tty;
491			struct window_pane *wp;
492			u_int i;
493
494			TAILQ_FOREACH(wp, &w->panes, entry) {
495			if (!window_pane_visible(wp))
496			continue;
497			for (i = 0; i < wp->sy; i++)
498			tty_draw_pane(tty, wp, i, wp->xoff, top + wp->yoff);
499			if (c->flags & CLIENT_IDENTIFY)
500			screen_redraw_draw_number(c, wp, top);
501			}
502			}
503
504			/* Draw the status line. */
505			void
506			screen_redraw_draw_status(struct client *c, u_int top)
507			{
508			struct tty *tty = &c->tty;
509
510			if (top)
511			tty_draw_line(tty, NULL, &c->status, 0, 0, 0);
512			else
513			tty_draw_line(tty, NULL, &c->status, 0, 0, tty->sy - 1);
514			}
515
516			/* Draw number on a pane. */
517			void
518			screen_redraw_draw_number(struct client c, struct window_pane wp, u_int top)
519			{
520			struct tty *tty = &c->tty;
521			struct session *s = c->session;
522			struct options *oo = s->options;
523			struct window *w = wp->window;
524			struct grid_cell gc;
525			u_int idx, px, py, i, j, xoff, yoff;
526			int colour, active_colour;
527			char buf[16], *ptr;
528			size_t len;
529
530			if (window_pane_index(wp, &idx) != 0)
531			fatalx("index not found");
532			len = xsnprintf(buf, sizeof buf, "%u", idx);
533
534			if (wp->sx < len)
535			return;
536			colour = options_get_number(oo, "display-panes-colour");
537			active_colour = options_get_number(oo, "display-panes-active-colour");
538
539			px = wp->sx / 2; py = wp->sy / 2;
540			xoff = wp->xoff; yoff = wp->yoff;
541
542			if (top)
543			yoff++;
544
545			if (wp->sx < len * 6 \|\| wp->sy < 5) {
546			tty_cursor(tty, xoff + px - len / 2, yoff + py);
547			goto draw_text;
548			}
549
550			px -= len * 3;
551			py -= 2;
552
553			memcpy(&gc, &grid_default_cell, sizeof gc);
554			if (w->active == wp)
555			gc.bg = active_colour;
556			else
557			gc.bg = colour;
558			tty_attributes(tty, &gc, wp);
559			for (ptr = buf; *ptr != '\0'; ptr++) {
560			if (ptr < '0' \|\| ptr > '9')
561			continue;
562			idx = *ptr - '0';
563
564			for (j = 0; j < 5; j++) {
565			for (i = px; i < px + 5; i++) {
566			tty_cursor(tty, xoff + i, yoff + py + j);
567			if (window_clock_table[idx][j][i - px])
568			tty_putc(tty, ' ');
569			}
570			}
571			px += 6;
572			}
573
574			len = xsnprintf(buf, sizeof buf, "%ux%u", wp->sx, wp->sy);
575			if (wp->sx < len \|\| wp->sy < 6)
576			return;
577			tty_cursor(tty, xoff + wp->sx - len, yoff);
578
579			draw_text:
580			memcpy(&gc, &grid_default_cell, sizeof gc);
581			if (w->active == wp)
582			gc.fg = active_colour;
583			else
584			gc.fg = colour;
585			tty_attributes(tty, &gc, wp);
586			tty_puts(tty, buf);
587
588			tty_cursor(tty, 0, 0);
589			}