diff options
Diffstat (limited to 'src/fe-text/screen.c')
| -rw-r--r-- | src/fe-text/screen.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/src/fe-text/screen.c b/src/fe-text/screen.c new file mode 100644 index 00000000..19c79f5a --- /dev/null +++ b/src/fe-text/screen.c @@ -0,0 +1,254 @@ +/* + screen.c : All virtual screen management, real screen management is in + con_???.c files. + + Copyright (C) 1999 Timo Sirainen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include "module.h" +#include "signals.h" +#include "settings.h" + +#include "screen.h" +#include "gui-readline.h" +#include "gui-windows.h" + +#ifdef HAVE_SYS_IOCTL_H +#include <sys/ioctl.h> +#endif +#include <signal.h> + +#ifndef COLOR_PAIRS +#define COLOR_PAIRS 64 +#endif + +#define MIN_SCREEN_WIDTH 20 + +static gint scrx, scry; +gboolean use_colors; +static gint freeze_refresh; + +#ifdef SIGWINCH + +static void sig_winch(int p) +{ +#ifdef TIOCGWINSZ + struct winsize ws; + gint ychange, xchange; + + /* Get new window size */ + if (ioctl(0, TIOCGWINSZ, &ws) < 0) + return; + + if (ws.ws_row == LINES && ws.ws_col == COLS) + { + /* Same size, abort. */ + return; + } + + if (ws.ws_col < MIN_SCREEN_WIDTH) + ws.ws_col = MIN_SCREEN_WIDTH; + + /* Resize curses terminal */ + ychange = ws.ws_row-LINES; + xchange = ws.ws_col-COLS; +#ifdef HAVE_CURSES_RESIZETERM + resizeterm(ws.ws_row, ws.ws_col); +#else + deinit_screen(); + init_screen(); +#endif + + last_text_line += ychange; + gui_windows_resize(ychange, xchange != 0); +#endif +} +#endif + +/* SIGINT != ^C .. any better way to make this work? */ +void sigint_handler(int p) +{ + ungetch(3); + readline(); +} + +static void read_settings(void) +{ + use_colors = settings_get_bool("colors"); + irssi_redraw(); +} + +/* Initialize screen, detect screen length */ +gint init_screen(void) +{ + gchar ansi_tab[8] = { 0, 4, 2, 6, 1, 5, 3, 7 }; + gint num; + + if (!initscr()) return 0; + + if (COLS < MIN_SCREEN_WIDTH) + COLS = MIN_SCREEN_WIDTH; + + signal(SIGINT, sigint_handler); + cbreak(); noecho(); idlok(stdscr, 1); +#ifdef HAVE_CURSES_IDCOK + idcok(stdscr, 1); +#endif + intrflush(stdscr, FALSE); halfdelay(1); keypad(stdscr, 1); + + settings_add_bool("lookandfeel", "colors", TRUE); + + use_colors = settings_get_bool("colors") && has_colors(); + if (has_colors()) start_color(); + +#ifdef HAVE_NCURSES_USE_DEFAULT_COLORS + /* this lets us to use the "default" background color for colors <= 7 so + background pixmaps etc. show up right */ + use_default_colors(); + + for (num = 1; num < COLOR_PAIRS; num++) + init_pair(num, ansi_tab[num & 7], num <= 7 ? -1 : ansi_tab[num >> 3]); + + init_pair(63, 0, -1); /* hm.. not THAT good idea, but probably more people + want dark grey than white on white.. */ +#else + for (num = 1; num < COLOR_PAIRS; num++) + init_pair(num, ansi_tab[num & 7], ansi_tab[num >> 3]); + init_pair(63, 0, 0); +#endif + + scrx = scry = 0; + if (last_text_line == 0) + { + first_text_line = 0; + last_text_line = LINES-1; + } +#ifdef SIGWINCH + signal(SIGWINCH, sig_winch); +#endif + + freeze_refresh = 0; + clear(); + + signal_add("setup changed", (SIGNAL_FUNC) read_settings); + return 1; +} + +/* Deinitialize screen */ +void deinit_screen(void) +{ + signal_remove("setup changed", (SIGNAL_FUNC) read_settings); + endwin(); +} + +void set_color(gint col) +{ + gint attr; + + if (!use_colors) + { + if ((col & 0x70) != 0) + attr = A_REVERSE; + else + attr = 0; + } + else + { + if (col & ATTR_COLOR8) + attr = A_DIM | COLOR_PAIR(63); + else + attr = COLOR_PAIR((col&7) + (col&0x70)/2); + } + + if (col & 0x08) attr |= A_BOLD; + if (col & 0x80) attr |= A_BLINK; + + if (col & ATTR_UNDERLINE) attr |= A_UNDERLINE; + if (col & ATTR_REVERSE) attr |= A_REVERSE; + + attrset(attr); +} + +void set_bg(gint col) +{ + gint attr; + + if (!use_colors) + { + if ((col & 0x70) != 0) + attr = A_REVERSE; + else + attr = 0; + } + else + { + if (col == 8) + attr = A_DIM | COLOR_PAIR(63); + else + attr = COLOR_PAIR((col&7) + (col&0x70)/2); + } + + if (col & 0x08) attr |= A_BOLD; + if (col & 0x80) attr |= A_BLINK; + + bkgdset(' ' | attr); +} + +/* Scroll area up */ +void scroll_up(gint y1, gint y2) +{ + scrollok(stdscr, TRUE); + setscrreg(y1, y2); scrl(1); + scrollok(stdscr, FALSE); +} + +/* Scroll area down */ +void scroll_down(gint y1, gint y2) +{ + scrollok(stdscr, TRUE); + setscrreg(y1, y2); scrl(-1); + scrollok(stdscr, FALSE); +} + +void move_cursor(gint y, gint x) +{ + scry = y; + scrx = x; +} + +void screen_refresh_freeze(void) +{ + freeze_refresh++; +} + +void screen_refresh_thaw(void) +{ + if (freeze_refresh > 0) + { + freeze_refresh--; + if (freeze_refresh == 0) screen_refresh(); + } +} + +void screen_refresh(void) +{ + if (freeze_refresh == 0) + { + move(scry, scrx); + refresh(); + } +} |