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/* $OpenBSD$ */
/*
* 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,
struct window_pane **);
int screen_redraw_check_active(u_int, u_int, int, struct window *,
struct window_pane *);
void screen_redraw_draw_borders(struct client *, 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 *);
#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_pane **wpp)
{
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;
*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 (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 active pane indicator. */
int
screen_redraw_check_active(u_int px, u_int py, int type, struct window *w,
struct window_pane *wp)
{
/* Is this off the active pane border? */
if (screen_redraw_cell_border1(w->active, px, py) != 1)
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);
/* 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 == w->active)
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 == w->active)
return (py <= wp->sy / 2);
return (py > wp->sy / 2);
}
return (0);
}
return (type);
}
/* Redraw entire screen. */
void
screen_redraw_screen(struct client *c, int draw_panes, int draw_status,
int draw_borders)
{
struct options *oo = &c->sessio
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