/* $Aumix: aumix/src/curses.c,v 1.6 2002/10/23 15:07:40 trevor Exp $ *//* curses.c:  functions specific to ncurses mode * copyright (c) 1993, 1996-2000, 2002 the authors--see AUTHORS file * * * This file is part of aumix. * * Aumix 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. * * Aumix 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 * aumix; if not, write to the Free Software Foundation, Inc., 59 Temple Place, * Suite 330, Boston, MA 02111-1307, USA. */#include "common.h"#ifdef HAVE_CURSES#include <ctype.h>		/* tolower() */#include "curses.h"#include "interactive.h"#include "mouse.h"char           *chark, *charl, *charm, *charo, *charq, *chars, *charu, *lang;int             current_dev, level_increment, balance_increment, menu_width, level_width, label_width, balance_width, levelbalmode, cols_saved, lines_saved;int             in_keysbox = FALSE;void            InitScreenCurses(void){	int             ii, trackwidth, y = 0;	static char    *menuitems[] = {		LOCAL_TEXT_NOOP("Quit"),		LOCAL_TEXT_NOOP("Load"),		LOCAL_TEXT_NOOP("Save"),		LOCAL_TEXT_NOOP("Keys"),		LOCAL_TEXT_NOOP("Mute"),		LOCAL_TEXT_NOOP("Only"),		LOCAL_TEXT_NOOP("Undo")	};/* from ALL_LINGUAS in top-level configure.in *//* This might be nicer with something like:	typedef struct menulanguage {		char    *language;		int      width;	}               menulanguage;*/	char            hotkey[2] = "";	menu_width = MENUSIZES[1];	/* "en" default */	for (ii = 0; ii < sizeof(LANGUAGES) / sizeof(*LANGUAGES); ii++) {		if ((lang = (char *) getenv("LANG")) && !strncmp(lang, LANGUAGES[ii], 5)) {			menu_width = MENUSIZES[ii];			break;		}	}	label_width = LABELSIZES[1];	/* "en" default */	for (ii = 0; ii < sizeof(LANGUAGES) / sizeof(*LANGUAGES); ii++) {		if ((lang = (char *) getenv("LANG")) && !strncmp(lang, LANGUAGES[ii], 5)) {			label_width = LABELSIZES[ii];			break;		}	}	cols_saved = COLS;	lines_saved = LINES;	/*	 * Adjust width of tracks according to number of columns available.	 */	/* fail-safe defaults */	level_increment = 1;	balance_increment = 1;	level_width = 1;	balance_width = 1;	trackwidth = COLS - XOFFSET - menu_width - R_P_WIDTH - ARROW_WIDTH * 2 - label_width;	trackwidth = trackwidth - 2;	/* Don't count zero positions in calculations. */	if (trackwidth > 1) {		balance_width = trackwidth / 2;		if (balance_width > MAXLEVEL)			balance_width = MAXLEVEL;		balance_increment = MAXLEVEL / balance_width;		if (MAXLEVEL > (balance_increment * balance_width))			balance_increment++;		balance_width = 1 + MAXLEVEL / balance_increment;		level_width = trackwidth - balance_width;		if (level_width > 0)			level_increment = MAXLEVEL / level_width;		if ((level_increment * level_width) < MAXLEVEL)			level_increment++;		level_width = 1 + MAXLEVEL / level_increment;	}	bkgdset(COLOR_PAIR(TRACK_COLOR));	clear();	for (ii = 0; ii < sizeof(menuitems) / sizeof(*menuitems); ii++) {		attrset(COLOR_PAIR(MENU_COLOR));		/*		 * Leave two lines above menu, one for "aumix" and one for "muted" or "only".		 */		mvaddstr(ii + 2, 0, (char *) LOCAL_TEXT(menuitems[ii]));		attrset(COLOR_PAIR(HOTKEY_COLOR) | A_BOLD);		hotkey[1] = '\0';	/* Add the null since strncpy won't. */		strncpy(hotkey, (char *) LOCAL_TEXT(menuitems[ii]), 1);		mvaddstr(ii + 2, 0, hotkey);	}	attrset(COLOR_PAIR(MENU_COLOR) | A_UNDERLINE);	mvaddstr(0, 0, "aumix");	attrset(COLOR_PAIR(AXIS_COLOR));	y = CountChannels(SOUND_MIXER_NRDEVICES);	if (YOFFSET + y <= LINES) {		mvaddstr(YOFFSET + y, XOFFSET + menu_width + R_P_WIDTH, (char *) LOCAL_TEXT("0"));		mvaddstr(YOFFSET + y, XOFFSET + menu_width + R_P_WIDTH + (level_width - strlen(LOCAL_TEXT("Level"))) / 2, (char *) LOCAL_TEXT("Level"));		mvaddstr(YOFFSET + y, XOFFSET + menu_width + R_P_WIDTH + level_width - 3, (char *) LOCAL_TEXT("100"));		mvaddstr(YOFFSET + y, XOFFSET + menu_width + R_P_WIDTH + level_width + label_width + ARROW_WIDTH * 2, (char *) LOCAL_TEXT("L"));		mvaddstr(YOFFSET + y, XOFFSET + menu_width + R_P_WIDTH + level_width + label_width + ARROW_WIDTH * 2 + (balance_width - strlen(LOCAL_TEXT("Balance"))) / 2, (char *) LOCAL_TEXT("Balance"));		mvaddstr(YOFFSET + y, XOFFSET + menu_width + R_P_WIDTH + level_width + label_width + ARROW_WIDTH * 2 + balance_width - 1, (char *) LOCAL_TEXT("R"));	}	y = 0;			/* Now recycle it for a different use. */	for (ii = 0; ii < SOUND_MIXER_NRDEVICES; ii++) {		if ((1 << ii) & (devmask | recmask)) {			attrset(COLOR_PAIR(AXIS_COLOR));			/* draw control labels */			mvaddstr(YOFFSET + y++, XOFFSET + menu_width + R_P_WIDTH + level_width + ARROW_WIDTH, LOCAL_TEXT(dev_label[ii]));		}	}	PlaceCursor();	RefreshAllSettings();	HighlightLabelCurses();}void            PlaceCursor(void){	/*	 * The different attributes are to avoid ncurses optimizations. Let's hope ncurses doesn't optimize this away on terminals that can't underline.	 */	attrset(COLOR_PAIR(MENU_COLOR) | A_NORMAL);	mvaddch(0, 4, 'x');	refresh();	attrset(COLOR_PAIR(MENU_COLOR) | A_UNDERLINE);	mvaddch(0, 4, 'x');	refresh();}void            HighlightLabelCurses(void){	attrset(COLOR_PAIR(ACTIVE_COLOR) | ((has_colors()) ? A_BOLD : A_REVERSE));	mvaddstr(YOFFSET + CountChannels(current_dev), XOFFSET + menu_width + R_P_WIDTH + level_width + ARROW_WIDTH, LOCAL_TEXT(dev_label[current_dev]));	PlaceCursor();}void            KeysBoxCurses(void){	/*	 * "This interface is made obsolete by setitimer(2)."--alarm(3), FreeBSD	 */	alarm(0);		/* Disable updates. */	timeout(-1);		/* Wait indefinitely for input. */	in_keysbox = TRUE;	clear();	attrset(COLOR_PAIR(AXIS_COLOR));	move(3, 0);	addstr((char *) LOCAL_TEXT("page arrows\n"));	addstr((char *) LOCAL_TEXT("tab enter < > , .\n"));	addstr((char *) LOCAL_TEXT("+ - [ ] arrows digits\n"));	addstr((char *) LOCAL_TEXT("space\n"));	addstr((char *) LOCAL_TEXT("|\n"));	printw((char *) LOCAL_TEXT("\nPress a key or mouse button to resume."));	move(1, 0);	printw((char *) LOCAL_TEXT("Key                       Function\n"));	printw((char *) LOCAL_TEXT("------------------------- --------------------"));	mvaddstr(3, 26, (char *) LOCAL_TEXT("change channel\n"));	mvaddstr(4, 26, (char *) LOCAL_TEXT("toggle level/balance\n"));	mvaddstr(5, 26, (char *) LOCAL_TEXT("adjust slider\n"));	mvaddstr(6, 26, (char *) LOCAL_TEXT("toggle record/play\n"));	mvaddstr(7, 26, (char *) LOCAL_TEXT("center balance\n"));	refresh();	Getch();	alarm(REFRESH_PERIOD);	/* Enable updates again. */	in_keysbox = FALSE;	timeout(1000);	clear();	InitScreen();	DrawLevelBalModeCurses(current_dev, levelbalmode);	HighlightLabelCurses();}void            ShowMutingCurses(void){	attrset(COLOR_PAIR(AXIS_COLOR));	move(1, 0);		/* Move down one line, for the title "aumix". */	switch (mutestate) {	case MUTE_OFF:		printw("%s", LOCAL_TEXT("     "));		break;	case MUTE_GLOBAL:		printw("%s", LOCAL_TEXT("muted"));		break;	case MUTE_ONLY:		printw("%s", LOCAL_TEXT("only "));	}	PlaceCursor();}void            SetDefaultColors(void){	int             background = COLOR_BLACK;	int             foreground = COLOR_WHITE;#if defined HAVE_USEDEFAULT	if (use_default_colors() == OK) {		background = -1;		foreground = -1;	}#endif				/* HAVE_USEDEFAULT */	init_pair(MENU_COLOR, COLOR_CYAN, COLOR_BLUE);	init_pair(HOTKEY_COLOR, COLOR_RED, COLOR_BLUE);	init_pair(HANDLE_COLOR, foreground, background);	init_pair(TRACK_COLOR, COLOR_BLUE, background);	init_pair(RECORD_COLOR, COLOR_RED, background);	init_pair(PLAY_COLOR, COLOR_GREEN, background);	init_pair(ACTIVE_COLOR, COLOR_YELLOW, COLOR_RED);	init_pair(AXIS_COLOR, foreground, background);}void            WakeUpCurses(void){	if ((COLS != cols_saved) || (LINES != lines_saved)) {	/* Window was resized. */		InitScreen();		DrawLevelBalMode(current_dev, levelbalmode);	}	RefreshNewSettings();}void            InitCurses(void){	char           *s;	ReadInteractiveKeys();	/*	 * When running in an xterm, make sure DISPLAY is set, because ncurses won't process mouse activity properly if it isn't.	 */	if ((s = getenv("TERM")) && !strncmp(s, "xterm", 5))		if ((s = getenv("DISPLAY")) == NULL)			putenv("DISPLAY=");	initscr();	noecho();	leaveok(stdscr, TRUE);	keypad(stdscr, TRUE);	meta(stdscr, TRUE);	/* not default on FreeBSD 4.0 before 1999-11-30 */	cbreak();	/*	 * says curs_kernel(3):	 * 	 * The SVr4 man pages warn that the return value of curs_set "is currently incorrect".  This implementation gets it right, but it may be unwise to count on the correctness of the return value anywhere else.	 */	(void) curs_set(0);	timeout(1000);	start_color();}int             InitColors(char *scheme){	FILE           *schemefile;	char            filename[PATH_MAX], *item, *fore, *back;	char            buf[BUFSIZ], *p;	static char    *colors[] =	{"black", "red", "green", "yellow", "blue", "magenta", "cyan", "white"};	static char    *items[] =	{"active", "axis", "handle", "hotkey", "menu", "play", "record", "track"};	int             bg, fg, ii;	if ((strlen(scheme) + strlen(DATADIR) + 1) >= PATH_MAX)		ErrorExitWarn(EFILE, 'e');	schemefile = fopen(filename, "r");	if (schemefile == NULL) {		sprintf(filename, "%s/%s", DATADIR, scheme);		schemefile = fopen(filename, "r");		if (schemefile == NULL)			return EFILE;	}	while (fgets(buf, BUFSIZ, schemefile)) {		p = buf;		while (*p && isspace(*p))	/* skip whitespace */			p++;		if (*p == 0 || *p == '#')	/* skip empty lines and comments */			continue;		/*		 * Says the Linux strtok(3) man page:		 *