/* $OpenBSD: screen-redraw.c,v 1.8 2009/07/31 10:12:49 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_cell_border(struct client *, u_int, u_int); int screen_redraw_check_cell(struct client *, u_int, 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 /* 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; /* Check all the panes. */ TAILQ_FOREACH(wp, &w->panes, entry) { if (!window_pane_visible(wp)) continue; /* 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); } } 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) { struct window *w = c->session->curw->window; struct tty *tty = &c->tty; struct window_pane *wp; u_int i, j, type; int status; const u_char *base, *ptr; u_char ch, border[20]; /* 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); return; } /* Draw background and borders. */ tty_reset(tty); strlcpy(border, " |-....--||+.", sizeof border); if (tty_term_has(tty->term, TTYC_ACSC)) { base = " xqlkmjwvtun~"; for (ptr = base; *ptr != '\0'; ptr++) { if ((ch = tty_get_acs(tty, *ptr)) != '\0') border[ptr - base] = ch; } tty_putcode(tty, TTYC_SMACS); } 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) { tty_cursor(tty, i, j, 0, 0); tty_putc(tty, border[type]); } } } tty_putcode(tty, TTYC_RMACS); /* Draw the panes. */ 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); } } /* Draw the status line. */ if (status) tty_draw_line(tty, &c->status, 0, 0, tty->sy - 1); } /* 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); }