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cc3152dc9a183a58dc543ecade66942e99701ec4
nethack/win/curses/cursmisc.c
k21971 a0d57d0a74 curses - remove unused variable in curses_str_remainder() 
and remove incorrect use of 'count' which could result in messages being
repeated indefiitely.
2019-10-19 00:43:52 +11:00

1066 lines
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/* vim:set cin ft=c sw=4 sts=4 ts=8 et ai cino=Ls\:0t0(0 : -*- mode:c;fill-column:80;tab-width:8;c-basic-offset:4;indent-tabs-mode:nil;c-file-style:"k&r" -*-*/
/* NetHack 3.6 cursmisc.c */
/* Copyright (c) Karl Garrison, 2010. */
/* NetHack may be freely redistributed. See license for details. */
#include "curses.h"
#include "hack.h"
#include "wincurs.h"
#include "cursmisc.h"
#include "func_tab.h"
#include "dlb.h"
#include <ctype.h>
/* Misc. curses interface functions */
/* Private declarations */
static int curs_x = -1;
static int curs_y = -1;
static int parse_escape_sequence(void);
/* Macros for Control and Alt keys */
#ifndef M
# ifndef NHSTDC
# define M(c) (0x80 | (c))
# else
# define M(c) ((c) - 128)
# endif/* NHSTDC */
#endif
#ifndef C
# define C(c) (0x1f & (c))
#endif
/* Read a character of input from the user */
int
curses_read_char()
{
int ch;
#if defined(ALT_0) || defined(ALT_9) || defined(ALT_A) || defined(ALT_Z)
int tmpch;
#endif
/* cancel message suppression; all messages have had a chance to be read */
curses_got_input();
ch = getch();
#if defined(ALT_0) || defined(ALT_9) || defined(ALT_A) || defined(ALT_Z)
tmpch = ch;
#endif
ch = curses_convert_keys(ch);
if (ch == 0) {
ch = '\033'; /* map NUL to ESC since nethack doesn't expect NUL */
}
#if defined(ALT_0) && defined(ALT_9) /* PDCurses, maybe others */
if ((ch >= ALT_0) && (ch <= ALT_9)) {
tmpch = (ch - ALT_0) + '0';
ch = M(tmpch);
}
#endif
#if defined(ALT_A) && defined(ALT_Z) /* PDCurses, maybe others */
if ((ch >= ALT_A) && (ch <= ALT_Z)) {
tmpch = (ch - ALT_A) + 'a';
ch = M(tmpch);
}
#endif
#ifdef KEY_RESIZE
/* Handle resize events via get_nh_event, not this code */
if (ch == KEY_RESIZE) {
ch = C('r'); /* NetHack doesn't know what to do with KEY_RESIZE */
}
#endif
if (counting && !isdigit(ch)) { /* Dismiss count window if necissary */
curses_count_window(NULL);
curses_refresh_nethack_windows();
}
return ch;
}
/* Turn on or off the specified color and / or attribute */
void
curses_toggle_color_attr(WINDOW *win, int color, int attr, int onoff)
{
#ifdef TEXTCOLOR
int curses_color;
/* if color is disabled, just show attribute */
if ((win == mapwin) ? !iflags.wc_color
/* statuswin is for #if STATUS_HILITES
but doesn't need to be conditional */
: !(iflags.wc2_guicolor || win == statuswin)) {
#endif
if (attr != NONE) {
if (onoff == ON)
wattron(win, attr);
else
wattroff(win, attr);
}
return;
#ifdef TEXTCOLOR
}
if (color == 0) { /* make black fg visible */
# ifdef USE_DARKGRAY
if (iflags.wc2_darkgray) {
if (can_change_color() && (COLORS > 16)) {
/* colorpair for black is already darkgray */
} else { /* Use bold for a bright black */
wattron(win, A_BOLD);
}
} else
# endif/* USE_DARKGRAY */
color = CLR_BLUE;
}
curses_color = color + 1;
if (COLORS < 16) {
if (curses_color > 8 && curses_color < 17)
curses_color -= 8;
else if (curses_color > (17 + 16))
curses_color -= 16;
}
if (onoff == ON) { /* Turn on color/attributes */
if (color != NONE) {
if ((((color > 7) && (color < 17)) ||
(color > 17 + 17)) && (COLORS < 16)) {
wattron(win, A_BOLD);
}
wattron(win, COLOR_PAIR(curses_color));
}
if (attr != NONE) {
wattron(win, attr);
}
} else { /* Turn off color/attributes */
if (color != NONE) {
if ((color > 7) && (COLORS < 16)) {
wattroff(win, A_BOLD);
}
# ifdef USE_DARKGRAY
if ((color == 0) && (!can_change_color() || (COLORS <= 16))) {
wattroff(win, A_BOLD);
}
# else
if (iflags.use_inverse) {
wattroff(win, A_REVERSE);
}
# endif/* DARKGRAY */
wattroff(win, COLOR_PAIR(curses_color));
}
if (attr != NONE) {
wattroff(win, attr);
}
}
#else
nhUse(color);
#endif /* TEXTCOLOR */
}
/* call curses_toggle_color_attr() with 'menucolors' instead of 'guicolor'
as the control flag */
void
curses_menu_color_attr(WINDOW *win, int color, int attr, int onoff)
{
boolean save_guicolor = iflags.wc2_guicolor;
/* curses_toggle_color_attr() uses 'guicolor' to decide whether to
honor specified color, but menu windows have their own
more-specific control, 'menucolors', so override with that here */
iflags.wc2_guicolor = iflags.use_menu_color;
curses_toggle_color_attr(win, color, attr, onoff);
iflags.wc2_guicolor = save_guicolor;
}
/* clean up and quit - taken from tty port */
void
curses_bail(const char *mesg)
{
clearlocks();
curses_exit_nhwindows(mesg);
nh_terminate(EXIT_SUCCESS);
}
/* Return a winid for a new window of the given type */
winid
curses_get_wid(int type)
{
static winid menu_wid = 20; /* Always even */
static winid text_wid = 21; /* Always odd */
winid ret;
switch (type) {
case NHW_MESSAGE:
return MESSAGE_WIN;
case NHW_MAP:
return MAP_WIN;
case NHW_STATUS:
return STATUS_WIN;
case NHW_MENU:
ret = menu_wid;
break;
case NHW_TEXT:
ret = text_wid;
break;
default:
impossible("curses_get_wid: unsupported window type");
ret = -1;
}
while (curses_window_exists(ret)) {
ret += 2;
if ((ret + 2) > 10000) { /* Avoid "wid2k" problem */
ret -= 9900;
}
}
if (type == NHW_MENU) {
menu_wid += 2;
} else {
text_wid += 2;
}
return ret;
}
/*
* Allocate a copy of the given string. If null, return a string of
* zero length.
*
* This is taken from copy_of() in tty/wintty.c.
*/
char *
curses_copy_of(const char *s)
{
if (!s)
s = "";
return dupstr(s);
}
/* Determine the number of lines needed for a string for a dialog window
of the given width */
int
curses_num_lines(const char *str, int width)
{
int last_space, count;
int curline = 1;
char substr[BUFSZ];
char tmpstr[BUFSZ];
strncpy(substr, str, BUFSZ-1);
substr[BUFSZ-1] = '\0';
while (strlen(substr) > (size_t) width) {
last_space = 0;
for (count = 0; count <= width; count++) {
if (substr[count] == ' ')
last_space = count;
}
if (last_space == 0) { /* No spaces found */
last_space = count - 1;
}
for (count = (last_space + 1); count < (int) strlen(substr); count++) {
tmpstr[count - (last_space + 1)] = substr[count];
}
tmpstr[count - (last_space + 1)] = '\0';
strcpy(substr, tmpstr);
curline++;
}
return curline;
}
/* Break string into smaller lines to fit into a dialog window of the
given width */
char *
curses_break_str(const char *str, int width, int line_num)
{
int last_space, count;
char *retstr;
int curline = 0;
int strsize = (int) strlen(str) + 1;
#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
char substr[strsize];
char curstr[strsize];
char tmpstr[strsize];
strcpy(substr, str);
#else
#ifndef BUFSZ
#define BUFSZ 256
#endif
char substr[BUFSZ * 2];
char curstr[BUFSZ * 2];
char tmpstr[BUFSZ * 2];
if (strsize > (BUFSZ * 2) - 1) {
paniclog("curses", "curses_break_str() string too long.");
strncpy(substr, str, (BUFSZ * 2) - 2);
substr[(BUFSZ * 2) - 1] = '\0';
} else
strcpy(substr, str);
#endif
while (curline < line_num) {
if (strlen(substr) == 0) {
break;
}
curline++;
last_space = 0;
for (count = 0; count <= width; count++) {
if (substr[count] == ' ') {
last_space = count;
} else if (substr[count] == '\0') {
last_space = count;
break;
}
}
if (last_space == 0) { /* No spaces found */
last_space = count - 1;
}
for (count = 0; count < last_space; count++) {
curstr[count] = substr[count];
}
curstr[count] = '\0';
if (substr[count] == '\0') {
break;
}
for (count = (last_space + 1); count < (int) strlen(substr); count++) {
tmpstr[count - (last_space + 1)] = substr[count];
}
tmpstr[count - (last_space + 1)] = '\0';
strcpy(substr, tmpstr);
}
if (curline < line_num) {
return NULL;
}
retstr = curses_copy_of(curstr);
return retstr;
}
/* Return the remaining portion of a string after hacking-off line_num lines */
char *
curses_str_remainder(const char *str, int width, int line_num)
{
int last_space, count;
char *retstr;
int curline = 0;
int strsize = strlen(str) + 1;
#if __STDC_VERSION__ >= 199901L
char substr[strsize];
char tmpstr[strsize];
strcpy(substr, str);
#else
#ifndef BUFSZ
#define BUFSZ 256
#endif
char substr[BUFSZ * 2];
char tmpstr[BUFSZ * 2];
if (strsize > (BUFSZ * 2) - 1) {
paniclog("curses", "curses_str_remainder() string too long.");
strncpy(substr, str, (BUFSZ * 2) - 2);
substr[(BUFSZ * 2) - 1] = '\0';
} else
strcpy(substr, str);
#endif
while (curline < line_num) {
if (strlen(substr) == 0) {
break;
}
curline++;
last_space = 0;
for (count = 0; count <= width; count++) {
if (substr[count] == ' ') {
last_space = count;
} else if (substr[count] == '\0') {
last_space = count;
break;
}
}
if (last_space == 0) { /* No spaces found */
last_space = count - 1;
}
if (substr[last_space] == '\0') {
break;
}
for (count = (last_space + 1); count < (int) strlen(substr); count++) {
tmpstr[count - (last_space + 1)] = substr[count];
}
tmpstr[count - (last_space + 1)] = '\0';
strcpy(substr, tmpstr);
}
if (curline < line_num) {
return NULL;
}
retstr = curses_copy_of(substr);
return retstr;
}
/* Determine if the given NetHack winid is a menu window */
boolean
curses_is_menu(winid wid)
{
if ((wid > 19) && !(wid % 2)) { /* Even number */
return TRUE;
} else {
return FALSE;
}
}
/* Determine if the given NetHack winid is a text window */
boolean
curses_is_text(winid wid)
{
if ((wid > 19) && (wid % 2)) { /* Odd number */
return TRUE;
} else {
return FALSE;
}
}
/* convert nethack's DECgraphics encoding into curses' ACS encoding */
int
curses_convert_glyph(int ch, int glyph)
{
/* The DEC line drawing characters use 0x5f through 0x7e instead
of the much more straightforward 0x60 through 0x7f, possibly
because 0x7f is effectively a control character (Rubout);
nethack ORs 0x80 to flag line drawing--that's stripped below */
static int decchars[33]; /* for chars 0x5f through 0x7f (95..127) */
ch &= 0xff; /* 0..255 only */
if (!(ch & 0x80))
return ch; /* no conversion needed */
/* this conversion routine is only called for SYMHANDLING(H_DEC) and
we decline to support special graphics symbols on the rogue level */
if (Is_rogue_level(&u.uz)) {
/* attempting to use line drawing characters will end up being
rendered as lowercase gibberish */
ch &= ~0x80;
return ch;
}
/*
* Curses has complete access to all characters that DECgraphics uses.
* However, their character value isn't consistent between terminals
* and implementations. For actual DEC terminals and faithful emulators,
* line-drawing characters are specified as lowercase letters (mostly)
* and a control code is sent to the terminal telling it to switch
* character sets (that's how the tty interface handles them).
* Curses remaps the characters instead.
*/
/* one-time initialization; some ACS_x aren't compile-time constant */
if (!decchars[0]) {
/* [0] is non-breakable space; irrelevant to nethack */
decchars[0x5f - 0x5f] = ' '; /* NBSP */
decchars[0x60 - 0x5f] = ACS_DIAMOND; /* [1] solid diamond */
decchars[0x61 - 0x5f] = ACS_CKBOARD; /* [2] checkerboard */
/* several "line drawing" characters are two-letter glyphs
which could be substituted for invisible control codes;
nethack's DECgraphics doesn't use any of them so we're
satisfied with conversion to a simple letter;
[3] "HT" as one char, with small raised upper case H over
and/or preceding small lowered upper case T */
decchars[0x62 - 0x5f] = 'H'; /* "HT" (horizontal tab) */
decchars[0x63 - 0x5f] = 'F'; /* "FF" as one char (form feed) */
decchars[0x64 - 0x5f] = 'C'; /* "CR" as one (carriage return) */
decchars[0x65 - 0x5f] = 'L'; /* [6] "LF" as one (line feed) */
decchars[0x66 - 0x5f] = ACS_DEGREE; /* small raised circle */
/* [8] plus or minus sign, '+' with horizontal line below */
decchars[0x67 - 0x5f] = ACS_PLMINUS;
decchars[0x68 - 0x5f] = 'N'; /* [9] "NL" as one char (new line) */
decchars[0x69 - 0x5f] = 'V'; /* [10] "VT" as one (vertical tab) */
decchars[0x6a - 0x5f] = ACS_LRCORNER; /* lower right corner */
decchars[0x6b - 0x5f] = ACS_URCORNER; /* upper right corner, 7-ish */
decchars[0x6c - 0x5f] = ACS_ULCORNER; /* upper left corner */
decchars[0x6d - 0x5f] = ACS_LLCORNER; /* lower left corner, 'L' */
/* [15] center cross, like big '+' sign */
decchars[0x6e - 0x5f] = ACS_PLUS;
decchars[0x6f - 0x5f] = ACS_S1; /* very high horizontal line */
decchars[0x70 - 0x5f] = ACS_S3; /* medium high horizontal line */
decchars[0x71 - 0x5f] = ACS_HLINE; /* centered horizontal line */
decchars[0x72 - 0x5f] = ACS_S7; /* medium low horizontal line */
decchars[0x73 - 0x5f] = ACS_S9; /* very low horizontal line */
/* [21] left tee, 'H' with right-hand vertical stroke removed;
note on left vs right: the ACS name (also DEC's terminal
documentation) refers to vertical bar rather than cross stroke,
nethack's left/right refers to direction of the cross stroke */
decchars[0x74 - 0x5f] = ACS_LTEE; /* ACS left tee, NH right tee */
/* [22] right tee, 'H' with left-hand vertical stroke removed */
decchars[0x75 - 0x5f] = ACS_RTEE; /* ACS right tee, NH left tee */
/* [23] bottom tee, '+' with lower half of vertical stroke
removed and remaining stroke pointed up (unside-down 'T');
nethack is inconsistent here--unlike with left/right, its
bottom/top directions agree with ACS */
decchars[0x76 - 0x5f] = ACS_BTEE; /* bottom tee, stroke up */
/* [24] top tee, '+' with upper half of vertical stroke removed */
decchars[0x77 - 0x5f] = ACS_TTEE; /* top tee, stroke down, 'T' */
decchars[0x78 - 0x5f] = ACS_VLINE; /* centered vertical line */
decchars[0x79 - 0x5f] = ACS_LEQUAL; /* less than or equal to */
/* [27] greater than or equal to, '>' with underscore */
decchars[0x7a - 0x5f] = ACS_GEQUAL;
/* [28] Greek pi ('n'-like; case is ambiguous: small size
suggests lower case but flat top suggests upper case) */
decchars[0x7b - 0x5f] = ACS_PI;
/* [29] not equal sign, combination of '=' and '/' */
decchars[0x7c - 0x5f] = ACS_NEQUAL;
/* [30] British pound sign (curly 'L' with embellishments) */
decchars[0x7d - 0x5f] = ACS_STERLING;
decchars[0x7e - 0x5f] = ACS_BULLET; /* [31] centered dot */
/* [32] is not used for DEC line drawing but is a potential
value for someone who assumes that 0x60..0x7f is the valid
range, so we're prepared to accept--and sanitize--it */
decchars[0x7f - 0x5f] = '?';
}
/* high bit set means special handling */
if (ch & 0x80) {
int convindx, symbol;
ch &= ~0x80; /* force plain ASCII for last resort */
convindx = ch - 0x5f;
/* if it's in the lower case block of ASCII (which includes
a few punctuation characters), use the conversion table */
if (convindx >= 0 && convindx < SIZE(decchars)) {
ch = decchars[convindx];
/* in case ACS_foo maps to 0 when current terminal is unable
to handle a particular character; if so, revert to default
rather than using DECgr value with high bit stripped */
if (!ch) {
symbol = glyph_to_cmap(glyph);
ch = (int) defsyms[symbol].sym;
}
}
}
return ch;
}
/* Move text cursor to specified coordinates in the given NetHack window */
void
curses_move_cursor(winid wid, int x, int y)
{
int sx, sy, ex, ey;
int xadj = 0;
int yadj = 0;
#ifndef PDCURSES
WINDOW *win = curses_get_nhwin(MAP_WIN);
#endif
if (wid != MAP_WIN) {
return;
}
#ifdef PDCURSES
/* PDCurses seems to not handle wmove correctly, so we use move and
physical screen coordinates instead */
curses_get_window_xy(wid, &xadj, &yadj);
#endif
curs_x = x + xadj;
curs_y = y + yadj;
curses_map_borders(&sx, &sy, &ex, &ey, x, y);
if (curses_window_has_border(wid)) {
curs_x++;
curs_y++;
}
if (x >= sx && x <= ex && y >= sy && y <= ey) {
/* map column #0 isn't used; shift column #1 to first screen column */
curs_x -= (sx + 1);
curs_y -= sy;
#ifdef PDCURSES
move(curs_y, curs_x);
#else
wmove(win, curs_y, curs_x);
#endif
}
}
/* Perform actions that should be done every turn before nhgetch() */
void
curses_prehousekeeping()
{
#ifndef PDCURSES
WINDOW *win = curses_get_nhwin(MAP_WIN);
#endif /* PDCURSES */
if ((curs_x > -1) && (curs_y > -1)) {
curs_set(1);
#ifdef PDCURSES
/* PDCurses seems to not handle wmove correctly, so we use move
and physical screen coordinates instead */
move(curs_y, curs_x);
#else
wmove(win, curs_y, curs_x);
#endif /* PDCURSES */
curses_refresh_nhwin(MAP_WIN);
}
}
/* Perform actions that should be done every turn after nhgetch() */
void
curses_posthousekeeping()
{
curs_set(0);
/* curses_decrement_highlights(FALSE); */
curses_clear_unhighlight_message_window();
}
void
curses_view_file(const char *filename, boolean must_exist)
{
winid wid;
anything Id;
char buf[BUFSZ];
menu_item *selected = NULL;
dlb *fp = dlb_fopen(filename, "r");
if (fp == NULL) {
if (must_exist)
pline("Cannot open \"%s\" for reading!", filename);
return;
}
wid = curses_get_wid(NHW_MENU);
curses_create_nhmenu(wid);
Id = zeroany;
while (dlb_fgets(buf, BUFSZ, fp) != NULL) {
curses_add_menu(wid, NO_GLYPH, &Id, 0, 0, A_NORMAL, buf, FALSE);
}
dlb_fclose(fp);
curses_end_menu(wid, "");
curses_select_menu(wid, PICK_NONE, &selected);
curses_del_wid(wid);
}
void
curses_rtrim(char *str)
{
char *s;
for (s = str; *s != '\0'; ++s);
for (--s; isspace(*s) && s > str; --s);
if (s == str)
*s = '\0';
else
*(++s) = '\0';
}
/* Read numbers until non-digit is encountered, and return number
in int form. */
int
curses_get_count(int first_digit)
{
long current_count = first_digit;
int current_char;
current_char = curses_read_char();
while (isdigit(current_char)) {
current_count = (current_count * 10) + (current_char - '0');
if (current_count > LARGEST_INT) {
current_count = LARGEST_INT;
}
custompline(SUPPRESS_HISTORY, "Count: %ld", current_count);
current_char = curses_read_char();
}
ungetch(current_char);
if (current_char == '\033') { /* Cancelled with escape */
current_count = -1;
}
return current_count;
}
/* Convert the given NetHack text attributes into the format curses
understands, and return that format mask. */
int
curses_convert_attr(int attr)
{
int curses_attr;
/* first, strip off control flags masked onto the display attributes
(caller should have already done this...) */
attr &= ~(ATR_URGENT | ATR_NOHISTORY);
switch (attr) {
case ATR_NONE:
curses_attr = A_NORMAL;
break;
case ATR_ULINE:
curses_attr = A_UNDERLINE;
break;
case ATR_BOLD:
curses_attr = A_BOLD;
break;
case ATR_DIM:
curses_attr = A_DIM;
break;
case ATR_BLINK:
curses_attr = A_BLINK;
break;
case ATR_INVERSE:
curses_attr = A_REVERSE;
break;
default:
curses_attr = A_NORMAL;
}
return curses_attr;
}
/* Map letter attributes from a string to bitmask. Return mask on
success (might be 0), or -1 if not found. */
int
curses_read_attrs(const char *attrs)
{
int retattr = 0;
if (!attrs || !*attrs)
return A_NORMAL;
if (strchr(attrs, 'b') || strchr(attrs, 'B'))
retattr |= A_BOLD;
if (strchr(attrs, 'i') || strchr(attrs, 'I')) /* inverse */
retattr |= A_REVERSE;
if (strchr(attrs, 'u') || strchr(attrs, 'U'))
retattr |= A_UNDERLINE;
if (strchr(attrs, 'k') || strchr(attrs, 'K'))
retattr |= A_BLINK;
if (strchr(attrs, 'd') || strchr(attrs, 'D'))
retattr |= A_DIM;
#ifdef A_ITALIC
if (strchr(attrs, 't') || strchr(attrs, 'T'))
retattr |= A_ITALIC;
#endif
#ifdef A_LEFTLINE
if (strchr(attrs, 'l') || strchr(attrs, 'L'))
retattr |= A_LEFTLINE;
#endif
#ifdef A_RIGHTLINE
if (strchr(attrs, 'r') || strchr(attrs, 'R'))
retattr |= A_RIGHTLINE;
#endif
if (retattr == 0) {
/* still default; check for none/normal */
if (strchr(attrs, 'n') || strchr(attrs, 'N'))
retattr = A_NORMAL;
else
retattr = -1; /* error */
}
return retattr;
}
/* format iflags.wc2_petattr into "+a+b..." for set bits a, b, ...
(used by core's 'O' command; return value points past leading '+') */
char *
curses_fmt_attrs(outbuf)
char *outbuf;
{
int attr = iflags.wc2_petattr;
outbuf[0] = '\0';
if (attr == A_NORMAL) {
Strcpy(outbuf, "+N(None)");
} else {
if (attr & A_BOLD)
Strcat(outbuf, "+B(Bold)");
if (attr & A_REVERSE)
Strcat(outbuf, "+I(Inverse)");
if (attr & A_UNDERLINE)
Strcat(outbuf, "+U(Underline)");
if (attr & A_BLINK)
Strcat(outbuf, "+K(blinK)");
if (attr & A_DIM)
Strcat(outbuf, "+D(Dim)");
#ifdef A_ITALIC
if (attr & A_ITALIC)
Strcat(outbuf, "+T(iTalic)");
#endif
#ifdef A_LEFTLINE
if (attr & A_LEFTLINE)
Strcat(outbuf, "+L(Left line)");
#endif
#ifdef A_RIGHTLINE
if (attr & A_RIGHTLINE)
Strcat(outbuf, "+R(Right line)");
#endif
}
if (!*outbuf)
Sprintf(outbuf, "+unknown [%d]", attr);
return &outbuf[1];
}
/* Convert special keys into values that NetHack can understand.
Currently this is limited to arrow keys, but this may be expanded. */
int
curses_convert_keys(int key)
{
int ret = key;
if (ret == '\033') {
ret = parse_escape_sequence();
}
/* Handle arrow keys */
switch (key) {
case KEY_BACKSPACE:
/* we can't distinguish between a separate backspace key and
explicit Ctrl+H intended to rush to the left; without this,
a value for ^H greater than 255 is passed back to core's
readchar() and stripping the value down to 0..255 yields ^G! */
ret = C('H');
break;
case KEY_LEFT:
if (iflags.num_pad) {
ret = '4';
} else {
ret = 'h';
}
break;
case KEY_RIGHT:
if (iflags.num_pad) {
ret = '6';
} else {
ret = 'l';
}
break;
case KEY_UP:
if (iflags.num_pad) {
ret = '8';
} else {
ret = 'k';
}
break;
case KEY_DOWN:
if (iflags.num_pad) {
ret = '2';
} else {
ret = 'j';
}
break;
#ifdef KEY_A1
case KEY_A1:
if (iflags.num_pad) {
ret = '7';
} else {
ret = 'y';
}
break;
#endif /* KEY_A1 */
#ifdef KEY_A3
case KEY_A3:
if (iflags.num_pad) {
ret = '9';
} else {
ret = 'u';
}
break;
#endif /* KEY_A3 */
#ifdef KEY_C1
case KEY_C1:
if (iflags.num_pad) {
ret = '1';
} else {
ret = 'b';
}
break;
#endif /* KEY_C1 */
#ifdef KEY_C3
case KEY_C3:
if (iflags.num_pad) {
ret = '3';
} else {
ret = 'n';
}
break;
#endif /* KEY_C3 */
#ifdef KEY_B2
case KEY_B2:
if (iflags.num_pad) {
ret = '5';
} else {
ret = 'g';
}
break;
#endif /* KEY_B2 */
}
return ret;
}
/*
* We treat buttons 2 and 3 as equivalent so that it doesn't matter which
* one is for right-click and which for middle-click. The core uses CLICK_2
* for right-click ("not left"-click) even though 2 might be middle button.
*
* BUTTON_CTRL was enabled at one point but was not working as intended.
* Ctrl+left_click was generating pairs of duplicated events with Ctrl and
* Report_mouse_position bits set (even though Report_mouse_position wasn't
* enabled) but no button click bit set. (It sort of worked because Ctrl+
* Report_mouse_position wasn't a left click so passed along CLICK_2, but
* the duplication made that too annoying to use. Attempting to immediately
* drain the second one wasn't working as intended either.)
*/
#define MOUSEBUTTONS (BUTTON1_CLICKED | BUTTON2_CLICKED | BUTTON3_CLICKED)
/* Process mouse events. Mouse movement is processed until no further
mouse movement events are available. Returns 0 for a mouse click
event, or the first non-mouse key event in the case of mouse
movement. */
int
curses_get_mouse(int *mousex, int *mousey, int *mod)
{
int key = '\033';
#ifdef NCURSES_MOUSE_VERSION
MEVENT event;
if (getmouse(&event) == OK) { /* True if user has clicked */
if ((event.bstate & MOUSEBUTTONS) != 0) {
/*
* The ncurses man page documents wmouse_trafo() incorrectly.
* It says that last argument 'TRUE' translates from screen
* to window and 'FALSE' translates from window to screen,
* but those are backwards. The mouse_trafo() macro calls
* last argument 'to_screen', suggesting that the backwards
* implementation is the intended behavior and the man page
* is describing it wrong.
*/
/* See if coords are in map window & convert coords */
if (wmouse_trafo(mapwin, &event.y, &event.x, FALSE)) {
key = '\0'; /* core uses this to detect a mouse click */
*mousex = event.x + 1; /* +1: screen 0..78 is map 1..79 */
*mousey = event.y;
if (curses_window_has_border(MAP_WIN)) {
(*mousex)--;
(*mousey)--;
}
*mod = ((event.bstate & (BUTTON1_CLICKED | BUTTON_CTRL))
== BUTTON1_CLICKED) ? CLICK_1 : CLICK_2;
}
}
}
#endif /* NCURSES_MOUSE_VERSION */
return key;
}
void
curses_mouse_support(mode)
int mode; /* 0: off, 1: on, 2: alternate on */
{
#ifdef NCURSES_MOUSE_VERSION
mmask_t result, oldmask, newmask;
if (!mode)
newmask = 0;
else
newmask = MOUSEBUTTONS; /* buttons 1, 2, and 3 */
result = mousemask(newmask, &oldmask);
nhUse(result);
#else
nhUse(mode);
#endif
}
static int
parse_escape_sequence(void)
{
#ifndef PDCURSES
int ret;
timeout(10);
ret = getch();
if (ret != ERR) { /* Likely an escape sequence */
if (((ret >= 'a') && (ret <= 'z')) || ((ret >= '0') && (ret <= '9'))) {
ret |= 0x80; /* Meta key support for most terminals */
} else if (ret == 'O') { /* Numeric keypad */
ret = getch();
if ((ret != ERR) && (ret >= 112) && (ret <= 121)) {
ret = ret - 112 + '0'; /* Convert to number */
} else {
ret = '\033'; /* Escape */
}
}
} else {
ret = '\033'; /* Just an escape character */
}
timeout(-1);
return ret;
#else
return '\033';
#endif /* !PDCURSES */
}
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