Merge remote-tracking branch 'upstream/master'

# Conflicts:
#	config.def.h
#	st.c
#	st.h
This commit is contained in:
Przemek Grondek 2022-05-16 23:14:04 +02:00
commit 1318eabdac
9 changed files with 374 additions and 223 deletions

63
FAQ
View File

@ -2,12 +2,14 @@
Use the excellent tool of [utmp](https://git.suckless.org/utmp/) for this task.
## Some _random program_ complains that st is unknown/not recognised/unsupported/whatever!
It means that st doesnt have any terminfo entry on your system. Chances are
you did not `make install`. If you just want to test it without installing it,
you can manually run `tic -sx st.info`.
## Nothing works, and nothing is said about an unknown terminal!
* Some programs just assume theyre running in xterm i.e. they dont rely on
@ -15,6 +17,7 @@ you can manually run `tic -sx st.info`.
* Some programs dont complain about the lacking st description and default to
another terminal. In that case see the question about terminfo.
## How do I scroll back up?
* Using a terminal multiplexer.
@ -23,10 +26,12 @@ you can manually run `tic -sx st.info`.
* Using the excellent tool of [scroll](https://git.suckless.org/scroll/).
* Using the scrollback [patch](https://st.suckless.org/patches/scrollback/).
## I would like to have utmp and/or scroll functionality by default
You can add the absolute patch of both programs in your config.h
file. You only have to modify the value of utmp and scroll variables.
You can add the absolute path of both programs in your config.h file. You only
have to modify the value of utmp and scroll variables.
## Why doesn't the Del key work in some programs?
@ -83,12 +88,14 @@ If you are using zsh, then read the zsh FAQ
Putting these lines into your .zshrc will fix the problems.
## How can I use meta in 8bit mode?
St supports meta in 8bit mode, but the default terminfo entry doesn't
use this capability. If you want it, you have to use the 'st-meta' value
in TERM.
## I cannot compile st in OpenBSD
OpenBSD lacks librt, despite it being mandatory in POSIX
@ -97,6 +104,7 @@ If you want to compile st for OpenBSD you have to remove -lrt from config.mk, an
st will compile without any loss of functionality, because all the functions are
included in libc on this platform.
## The Backspace Case
St is emulating the Linux way of handling backspace being delete and delete being
@ -158,19 +166,60 @@ terminal users wants its backspace to be how he feels it:
[1] http://www.ibb.net/~anne/keyboard.html
[2] http://www.tldp.org/HOWTO/Keyboard-and-Console-HOWTO-5.html
## But I really want the old grumpy behaviour of my terminal
Apply [1].
[1] https://st.suckless.org/patches/delkey
## Why do images not work in st (in programs such as w3m)?
This is a terrible hack that overdraws an image on top of the terminal emulator
window. It also relies on a very specific way the terminal draws it's contents.
## Why do images not work in st using the w3m image hack?
w3mimg uses a hack that draws an image on top of the terminal emulator Drawable
window. The hack relies on the terminal to use a single buffer to draw its
contents directly.
st uses double-buffered drawing so the image is quickly replaced and may show a
short flicker effect.
Below is a patch example to change st double-buffering to a single Drawable
buffer.
diff --git a/x.c b/x.c
--- a/x.c
+++ b/x.c
@@ -732,10 +732,6 @@ xresize(int col, int row)
win.tw = col * win.cw;
win.th = row * win.ch;
- XFreePixmap(xw.dpy, xw.buf);
- xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
- DefaultDepth(xw.dpy, xw.scr));
- XftDrawChange(xw.draw, xw.buf);
xclear(0, 0, win.w, win.h);
/* resize to new width */
@@ -1148,8 +1144,7 @@ xinit(int cols, int rows)
gcvalues.graphics_exposures = False;
dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
&gcvalues);
- xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
- DefaultDepth(xw.dpy, xw.scr));
+ xw.buf = xw.win;
XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
@@ -1632,8 +1627,6 @@ xdrawline(Line line, int x1, int y1, int x2)
void
xfinishdraw(void)
{
- XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
- win.h, 0, 0);
XSetForeground(xw.dpy, dc.gc,
dc.col[IS_SET(MODE_REVERSE)?
defaultfg : defaultbg].pixel);
A more proper (but limited way) would be using sixels. Which st doesn't
support.
## BadLength X error in Xft when trying to render emoji

View File

@ -1,6 +1,6 @@
MIT/X Consortium License
© 2014-2018 Hiltjo Posthuma <hiltjo at codemadness dot org>
© 2014-2022 Hiltjo Posthuma <hiltjo at codemadness dot org>
© 2018 Devin J. Pohly <djpohly at gmail dot com>
© 2014-2017 Quentin Rameau <quinq at fifth dot space>
© 2009-2012 Aurélien APTEL <aurelien dot aptel at gmail dot com>

View File

@ -43,9 +43,18 @@ static unsigned int tripleclicktimeout = 600;
/* alt screens */
int allowaltscreen = 1;
/* frames per second st should at maximum draw to the screen */
static unsigned int xfps = 120;
static unsigned int actionfps = 30;
/* allow certain non-interactive (insecure) window operations such as:
setting the clipboard text */
int allowwindowops = 0;
/*
* draw latency range in ms - from new content/keypress/etc until drawing.
* within this range, st draws when content stops arriving (idle). mostly it's
* near minlatency, but it waits longer for slow updates to avoid partial draw.
* low minlatency will tear/flicker more, as it can "detect" idle too early.
*/
static double minlatency = 8;
static double maxlatency = 33;
/*
* blinking timeout (set to 0 to disable blinking) for the terminal blinking
@ -126,7 +135,8 @@ static const char *colorname[] = {
/* more colors can be added after 255 to use with DefaultXX */
"#cccccc",
"#555555",
"black",
"gray90", /* default foreground colour */
"black", /* default background colour */
};
@ -134,9 +144,9 @@ static const char *colorname[] = {
* Default colors (colorname index)
* foreground, background, cursor, reverse cursor
*/
unsigned int defaultfg = 7;
unsigned int defaultbg = 258;
static unsigned int defaultcs = 256;
unsigned int defaultfg = 258;
unsigned int defaultbg = 259;
unsigned int defaultcs = 256;
static unsigned int defaultrcs = 257;
/*
@ -182,7 +192,9 @@ static uint forcemousemod = ShiftMask;
static MouseShortcut mshortcuts[] = {
/* mask button function argument release */
{ XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 },
{ ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} },
{ XK_ANY_MOD, Button4, ttysend, {.s = "\031"} },
{ ShiftMask, Button5, ttysend, {.s = "\033[6;2~"} },
{ XK_ANY_MOD, Button5, ttysend, {.s = "\005"} },
};

View File

@ -1,5 +1,5 @@
# st version
VERSION = 0.8.3
VERSION = 0.8.5
# Customize below to fit your system
@ -28,8 +28,9 @@ STLDFLAGS = $(LIBS) $(LDFLAGS)
# OpenBSD:
#CPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
#LIBS = -L$(X11LIB) -lm -lX11 -lutil -lXft \
# `pkg-config --libs fontconfig` \
# `pkg-config --libs freetype2`
# `$(PKG_CONFIG) --libs fontconfig` \
# `$(PKG_CONFIG) --libs freetype2`
#MANPREFIX = ${PREFIX}/man
# compiler and linker
# CC = c99

225
st.c
View File

@ -39,7 +39,7 @@
/* macros */
#define IS_SET(flag) ((term.mode & (flag)) != 0)
#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == 0x7f)
#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
#define ISDELIM(u) (u && wcschr(worddelimiters, u))
@ -55,7 +55,6 @@ enum term_mode {
MODE_ECHO = 1 << 4,
MODE_PRINT = 1 << 5,
MODE_UTF8 = 1 << 6,
MODE_SIXEL = 1 << 7,
};
enum cursor_movement {
@ -82,12 +81,11 @@ enum charset {
enum escape_state {
ESC_START = 1,
ESC_CSI = 2,
ESC_STR = 4, /* OSC, PM, APC */
ESC_STR = 4, /* DCS, OSC, PM, APC */
ESC_ALTCHARSET = 8,
ESC_STR_END = 16, /* a final string was encountered */
ESC_TEST = 32, /* Enter in test mode */
ESC_UTF8 = 64,
ESC_DCS =128,
};
typedef struct {
@ -136,6 +134,7 @@ typedef struct {
int charset; /* current charset */
int icharset; /* selected charset for sequence */
int *tabs;
Rune lastc; /* last printed char outside of sequence, 0 if control */
} Term;
/* CSI Escape sequence structs */
@ -169,6 +168,7 @@ static void csidump(void);
static void csihandle(void);
static void csiparse(void);
static void csireset(void);
static void osc_color_response(int, int, int);
static int eschandle(uchar);
static void strdump(void);
static void strhandle(void);
@ -194,18 +194,18 @@ static void tputc(Rune);
static void treset(void);
static void tscrollup(int, int, int);
static void tscrolldown(int, int, int);
static void tsetattr(int *, int);
static void tsetchar(Rune, Glyph *, int, int);
static void tsetattr(const int *, int);
static void tsetchar(Rune, const Glyph *, int, int);
static void tsetdirt(int, int);
static void tsetscroll(int, int);
static void tswapscreen(void);
static void tsetmode(int, int, int *, int);
static void tsetmode(int, int, const int *, int);
static int twrite(const char *, int, int);
static void tfulldirt(void);
static void tcontrolcode(uchar );
static void tdectest(char );
static void tdefutf8(char);
static int32_t tdefcolor(int *, int *, int);
static int32_t tdefcolor(const int *, int *, int);
static void tdeftran(char);
static void tstrsequence(uchar);
@ -234,10 +234,10 @@ static int iofd = 1;
static int cmdfd;
static pid_t pid;
static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
static const uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
static const uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
static const Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
ssize_t
xwrite(int fd, const char *s, size_t len)
@ -277,12 +277,14 @@ xrealloc(void *p, size_t len)
}
char *
xstrdup(char *s)
xstrdup(const char *s)
{
if ((s = strdup(s)) == NULL)
char *p;
if ((p = strdup(s)) == NULL)
die("strdup: %s\n", strerror(errno));
return s;
return p;
}
size_t
@ -355,25 +357,10 @@ utf8validate(Rune *u, size_t i)
return i;
}
static const char base64_digits[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0,
63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, -1, 0, 0, 0, 0, 1,
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34,
35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
char
base64dec_getc(const char **src)
{
while (**src && !isprint(**src))
while (**src && !isprint((unsigned char)**src))
(*src)++;
return **src ? *((*src)++) : '='; /* emulate padding if string ends */
}
@ -383,6 +370,13 @@ base64dec(const char *src)
{
size_t in_len = strlen(src);
char *result, *dst;
static const char base64_digits[256] = {
[43] = 62, 0, 0, 0, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
0, 0, 0, -1, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0,
0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
};
if (in_len % 4)
in_len += 4 - (in_len % 4);
@ -526,7 +520,7 @@ selsnap(int *x, int *y, int direction)
{
int newx, newy, xt, yt;
int delim, prevdelim;
Glyph *gp, *prevgp;
const Glyph *gp, *prevgp;
switch (sel.snap) {
case SNAP_WORD:
@ -599,7 +593,7 @@ getsel(void)
{
char *str, *ptr;
int y, bufsize, lastx, linelen;
Glyph *gp, *last;
const Glyph *gp, *last;
if (sel.ob.x == -1)
return NULL;
@ -641,7 +635,8 @@ getsel(void)
* st.
* FIXME: Fix the computer world.
*/
if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
if ((y < sel.ne.y || lastx >= linelen) &&
(!(last->mode & ATTR_WRAP) || sel.type == SEL_RECTANGULAR))
*ptr++ = '\n';
}
*ptr = 0;
@ -737,7 +732,7 @@ sigchld(int a)
die("child exited with status %d\n", WEXITSTATUS(stat));
else if (WIFSIGNALED(stat))
die("child terminated due to signal %d\n", WTERMSIG(stat));
exit(0);
_exit(0);
}
void
@ -765,7 +760,7 @@ stty(char **args)
}
int
ttynew(char *line, char *cmd, char *out, char **args)
ttynew(const char *line, char *cmd, const char *out, char **args)
{
int m, s;
@ -798,14 +793,15 @@ ttynew(char *line, char *cmd, char *out, char **args)
break;
case 0:
close(iofd);
close(m);
setsid(); /* create a new process group */
dup2(s, 0);
dup2(s, 1);
dup2(s, 2);
if (ioctl(s, TIOCSCTTY, NULL) < 0)
die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
if (s > 2)
close(s);
close(m);
#ifdef __OpenBSD__
if (pledge("stdio getpw proc exec", NULL) == -1)
die("pledge\n");
@ -848,7 +844,6 @@ ttyread(void)
if (buflen > 0)
memmove(buf, buf + written, buflen);
return ret;
}
}
@ -1163,28 +1158,18 @@ selscroll(int orig, int n)
if (sel.ob.x == -1)
return;
if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
if (BETWEEN(sel.nb.y, orig, term.bot) != BETWEEN(sel.ne.y, orig, term.bot)) {
selclear();
} else if (BETWEEN(sel.nb.y, orig, term.bot)) {
sel.ob.y += n;
sel.oe.y += n;
if (sel.ob.y < term.top || sel.ob.y > term.bot ||
sel.oe.y < term.top || sel.oe.y > term.bot) {
selclear();
return;
}
if (sel.type == SEL_RECTANGULAR) {
if (sel.ob.y < term.top)
sel.ob.y = term.top;
if (sel.oe.y > term.bot)
sel.oe.y = term.bot;
} else {
if (sel.ob.y < term.top) {
sel.ob.y = term.top;
sel.ob.x = 0;
}
if (sel.oe.y > term.bot) {
sel.oe.y = term.bot;
sel.oe.x = term.col;
}
}
selnormalize();
}
}
}
void
@ -1255,9 +1240,9 @@ tmoveto(int x, int y)
}
void
tsetchar(Rune u, Glyph *attr, int x, int y)
tsetchar(Rune u, const Glyph *attr, int x, int y)
{
static char *vt100_0[62] = { /* 0x41 - 0x7e */
static const char *vt100_0[62] = { /* 0x41 - 0x7e */
"", "", "", "", "", "", "", /* A - G */
0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
@ -1372,7 +1357,7 @@ tdeleteline(int n)
}
int32_t
tdefcolor(int *attr, int *npar, int l)
tdefcolor(const int *attr, int *npar, int l)
{
int32_t idx = -1;
uint r, g, b;
@ -1422,7 +1407,7 @@ tdefcolor(int *attr, int *npar, int l)
}
void
tsetattr(int *attr, int l)
tsetattr(const int *attr, int l)
{
int i;
int32_t idx;
@ -1540,9 +1525,9 @@ tsetscroll(int t, int b)
}
void
tsetmode(int priv, int set, int *args, int narg)
tsetmode(int priv, int set, const int *args, int narg)
{
int alt, *lim;
int alt; const int *lim;
for (lim = args + narg; args < lim; ++args) {
if (priv) {
@ -1718,6 +1703,12 @@ csihandle(void)
if (csiescseq.arg[0] == 0)
ttywrite(vtiden, strlen(vtiden), 0);
break;
case 'b': /* REP -- if last char is printable print it <n> more times */
DEFAULT(csiescseq.arg[0], 1);
if (term.lastc)
while (csiescseq.arg[0]-- > 0)
tputc(term.lastc);
break;
case 'C': /* CUF -- Cursor <n> Forward */
case 'a': /* HPR -- Cursor <n> Forward */
DEFAULT(csiescseq.arg[0], 1);
@ -1841,7 +1832,7 @@ csihandle(void)
break;
case 'n': /* DSR Device Status Report (cursor position) */
if (csiescseq.arg[0] == 6) {
len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
len = snprintf(buf, sizeof(buf), "\033[%i;%iR",
term.c.y+1, term.c.x+1);
ttywrite(buf, len, 0);
}
@ -1905,11 +1896,41 @@ csireset(void)
memset(&csiescseq, 0, sizeof(csiescseq));
}
void
osc_color_response(int num, int index, int is_osc4)
{
int n;
char buf[32];
unsigned char r, g, b;
if (xgetcolor(is_osc4 ? num : index, &r, &g, &b)) {
fprintf(stderr, "erresc: failed to fetch %s color %d\n",
is_osc4 ? "osc4" : "osc",
is_osc4 ? num : index);
return;
}
n = snprintf(buf, sizeof buf, "\033]%s%d;rgb:%02x%02x/%02x%02x/%02x%02x\007",
is_osc4 ? "4;" : "", num, r, r, g, g, b, b);
if (n < 0 || n >= sizeof(buf)) {
fprintf(stderr, "error: %s while printing %s response\n",
n < 0 ? "snprintf failed" : "truncation occurred",
is_osc4 ? "osc4" : "osc");
} else {
ttywrite(buf, n, 1);
}
}
void
strhandle(void)
{
char *p = NULL, *dec;
int j, narg, par;
const struct { int idx; char *str; } osc_table[] = {
{ defaultfg, "foreground" },
{ defaultbg, "background" },
{ defaultcs, "cursor" }
};
term.esc &= ~(ESC_STR_END|ESC_STR);
strparse();
@ -1919,13 +1940,21 @@ strhandle(void)
case ']': /* OSC -- Operating System Command */
switch (par) {
case 0:
if (narg > 1) {
xsettitle(strescseq.args[1]);
xseticontitle(strescseq.args[1]);
}
return;
case 1:
if (narg > 1)
xseticontitle(strescseq.args[1]);
return;
case 2:
if (narg > 1)
xsettitle(strescseq.args[1]);
return;
case 52:
if (narg > 2) {
if (narg > 2 && allowwindowops) {
dec = base64dec(strescseq.args[2]);
if (dec) {
xsetsel(dec);
@ -1935,14 +1964,35 @@ strhandle(void)
}
}
return;
case 10:
case 11:
case 12:
if (narg < 2)
break;
p = strescseq.args[1];
if ((j = par - 10) < 0 || j >= LEN(osc_table))
break; /* shouldn't be possible */
if (!strcmp(p, "?")) {
osc_color_response(par, osc_table[j].idx, 0);
} else if (xsetcolorname(osc_table[j].idx, p)) {
fprintf(stderr, "erresc: invalid %s color: %s\n",
osc_table[j].str, p);
} else {
tfulldirt();
}
return;
case 4: /* color set */
if (narg < 3)
break;
p = strescseq.args[2];
/* FALLTHROUGH */
case 104: /* color reset, here p = NULL */
case 104: /* color reset */
j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
if (xsetcolorname(j, p)) {
if (p && !strcmp(p, "?")) {
osc_color_response(j, 0, 1);
} else if (xsetcolorname(j, p)) {
if (par == 104 && narg <= 1)
return; /* color reset without parameter */
fprintf(stderr, "erresc: invalid color j=%d, p=%s\n",
@ -1952,7 +2002,7 @@ strhandle(void)
* TODO if defaultbg color is changed, borders
* are dirty
*/
redraw();
tfulldirt();
}
return;
}
@ -1961,7 +2011,6 @@ strhandle(void)
xsettitle(strescseq.args[0]);
return;
case 'P': /* DCS -- Device Control String */
term.mode |= ESC_DCS;
case '_': /* APC -- Application Program Command */
case '^': /* PM -- Privacy Message */
return;
@ -2079,12 +2128,12 @@ void
tdumpline(int n)
{
char buf[UTF_SIZ];
Glyph *bp, *end;
const Glyph *bp, *end;
bp = &term.line[n][0];
end = &bp[MIN(tlinelen(n), term.col) - 1];
if (bp != end || bp->u != ' ') {
for ( ;bp <= end; ++bp)
for ( ; bp <= end; ++bp)
tprinter(buf, utf8encode(bp->u, buf));
}
tprinter("\n", 1);
@ -2155,12 +2204,9 @@ tdectest(char c)
void
tstrsequence(uchar c)
{
strreset();
switch (c) {
case 0x90: /* DCS -- Device Control String */
c = 'P';
term.esc |= ESC_DCS;
break;
case 0x9f: /* APC -- Application Program Command */
c = '_';
@ -2172,6 +2218,7 @@ tstrsequence(uchar c)
c = ']';
break;
}
strreset();
strescseq.type = c;
term.esc |= ESC_STR;
}
@ -2214,6 +2261,7 @@ tcontrolcode(uchar ascii)
return;
case '\032': /* SUB */
tsetchar('?', &term.c.attr, term.c.x, term.c.y);
/* FALLTHROUGH */
case '\030': /* CAN */
csireset();
break;
@ -2368,16 +2416,14 @@ tputc(Rune u)
Glyph *gp;
control = ISCONTROL(u);
if (!IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
if (u < 127 || !IS_SET(MODE_UTF8)) {
c[0] = u;
width = len = 1;
} else {
len = utf8encode(u, c);
if (!control && (width = wcwidth(u)) == -1) {
memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
if (!control && (width = wcwidth(u)) == -1)
width = 1;
}
}
if (IS_SET(MODE_PRINT))
tprinter(c, len);
@ -2391,23 +2437,11 @@ tputc(Rune u)
if (term.esc & ESC_STR) {
if (u == '\a' || u == 030 || u == 032 || u == 033 ||
ISCONTROLC1(u)) {
term.esc &= ~(ESC_START|ESC_STR|ESC_DCS);
if (IS_SET(MODE_SIXEL)) {
/* TODO: render sixel */;
term.mode &= ~MODE_SIXEL;
return;
}
term.esc &= ~(ESC_START|ESC_STR);
term.esc |= ESC_STR_END;
goto check_control_code;
}
if (IS_SET(MODE_SIXEL)) {
/* TODO: implement sixel mode */
return;
}
if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
term.mode |= MODE_SIXEL;
if (strescseq.len+len >= strescseq.siz) {
/*
* Here is a bug in terminals. If the user never sends
@ -2444,6 +2478,8 @@ check_control_code:
/*
* control codes are not shown ever
*/
if (!term.esc)
term.lastc = 0;
return;
} else if (term.esc & ESC_START) {
if (term.esc & ESC_CSI) {
@ -2474,7 +2510,7 @@ check_control_code:
*/
return;
}
if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
if (selected(term.c.x, term.c.y))
selclear();
gp = &term.line[term.c.y][term.c.x];
@ -2493,10 +2529,15 @@ check_control_code:
}
tsetchar(u, &term.c.attr, term.c.x, term.c.y);
term.lastc = u;
if (width == 2) {
gp->mode |= ATTR_WIDE;
if (term.c.x+1 < term.col) {
if (gp[1].mode == ATTR_WIDE && term.c.x+2 < term.col) {
gp[2].u = ' ';
gp[2].mode &= ~ATTR_WDUMMY;
}
gp[1].u = '\0';
gp[1].mode = ATTR_WDUMMY;
}
@ -2516,7 +2557,7 @@ twrite(const char *buf, int buflen, int show_ctrl)
int n;
for (n = 0; n < buflen; n += charsize) {
if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
if (IS_SET(MODE_UTF8)) {
/* process a complete utf8 char */
charsize = utf8decode(buf + n, &u, buflen - n);
if (charsize == 0)

6
st.h
View File

@ -94,7 +94,7 @@ void tnew(int, int);
void tresize(int, int);
void tsetdirtattr(int);
void ttyhangup(void);
int ttynew(char *, char *, char *, char **);
int ttynew(const char *, char *, const char *, char **);
size_t ttyread(void);
void ttyresize(int, int);
void ttywrite(const char *, size_t, int);
@ -112,7 +112,7 @@ size_t utf8encode(Rune, char *);
void *xmalloc(size_t);
void *xrealloc(void *, size_t);
char *xstrdup(char *);
char *xstrdup(const char *);
int isboxdraw(Rune);
ushort boxdrawindex(const Glyph *);
@ -129,9 +129,11 @@ extern char *stty_args;
extern char *vtiden;
extern wchar_t *worddelimiters;
extern int allowaltscreen;
extern int allowwindowops;
extern char *termname;
extern unsigned int tabspaces;
extern unsigned int defaultfg;
extern unsigned int defaultbg;
extern unsigned int defaultcs;
extern const int boxdraw, boxdraw_bold, boxdraw_braille;
extern float alpha;

View File

@ -158,6 +158,7 @@ st-mono| simpleterm monocolor,
rc=\E8,
rev=\E[7m,
ri=\EM,
rin=\E[%p1%dT,
ritm=\E[23m,
rmacs=\E(B,
rmcup=\E[?1049l,
@ -183,6 +184,8 @@ st-mono| simpleterm monocolor,
# XTerm extensions
rmxx=\E[29m,
smxx=\E[9m,
# disabled rep for now: causes some issues with older ncurses versions.
# rep=%p1%c\E[%p2%{1}%-%db,
# tmux extensions, see TERMINFO EXTENSIONS in tmux(1)
Tc,
Ms=\E]52;%p1%s;%p2%s\007,

2
win.h
View File

@ -30,6 +30,8 @@ void xdrawline(Line, int, int, int);
void xfinishdraw(void);
void xloadcols(void);
int xsetcolorname(int, const char *);
int xgetcolor(int, unsigned char *, unsigned char *, unsigned char *);
void xseticontitle(char *);
void xsettitle(char *);
int xsetcursor(int);
void xsetmode(int, unsigned int);

249
x.c
View File

@ -48,7 +48,7 @@ typedef struct {
/* X modifiers */
#define XK_ANY_MOD UINT_MAX
#define XK_NO_MOD 0
#define XK_SWITCH_MOD (1<<13)
#define XK_SWITCH_MOD (1<<13|1<<14)
/* function definitions used in config.h */
static void clipcopy(const Arg *);
@ -93,7 +93,7 @@ typedef struct {
Window win;
Drawable buf;
GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
Atom xembed, wmdeletewin, netwmname, netwmpid;
Atom xembed, wmdeletewin, netwmname, netwmiconname, netwmpid;
struct {
XIM xim;
XIC xic;
@ -157,7 +157,7 @@ static void xresize(int, int);
static void xhints(void);
static int xloadcolor(int, const char *, Color *);
static int xloadfont(Font *, FcPattern *);
static void xloadfonts(char *, double);
static void xloadfonts(const char *, double);
static void xunloadfont(Font *);
static void xunloadfonts(void);
static void xsetenv(void);
@ -254,7 +254,7 @@ static char *opt_line = NULL;
static char *opt_name = NULL;
static char *opt_title = NULL;
static int oldbutton = 3; /* button event on startup: 3 = release */
static uint buttons; /* bit field of pressed buttons */
void
clipcopy(const Arg *dummy)
@ -366,59 +366,68 @@ mousesel(XEvent *e, int done)
void
mousereport(XEvent *e)
{
int len, x = evcol(e), y = evrow(e),
button = e->xbutton.button, state = e->xbutton.state;
int len, btn, code;
int x = evcol(e), y = evrow(e);
int state = e->xbutton.state;
char buf[40];
static int ox, oy;
/* from urxvt */
if (e->xbutton.type == MotionNotify) {
if (e->type == MotionNotify) {
if (x == ox && y == oy)
return;
if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
return;
/* MOUSE_MOTION: no reporting if no button is pressed */
if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
/* MODE_MOUSEMOTION: no reporting if no button is pressed */
if (IS_SET(MODE_MOUSEMOTION) && buttons == 0)
return;
button = oldbutton + 32;
ox = x;
oy = y;
/* Set btn to lowest-numbered pressed button, or 12 if no
* buttons are pressed. */
for (btn = 1; btn <= 11 && !(buttons & (1<<(btn-1))); btn++)
;
code = 32;
} else {
if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
button = 3;
} else {
button -= Button1;
if (button >= 3)
button += 64 - 3;
}
if (e->xbutton.type == ButtonPress) {
oldbutton = button;
ox = x;
oy = y;
} else if (e->xbutton.type == ButtonRelease) {
oldbutton = 3;
btn = e->xbutton.button;
/* Only buttons 1 through 11 can be encoded */
if (btn < 1 || btn > 11)
return;
if (e->type == ButtonRelease) {
/* MODE_MOUSEX10: no button release reporting */
if (IS_SET(MODE_MOUSEX10))
return;
if (button == 64 || button == 65)
/* Don't send release events for the scroll wheel */
if (btn == 4 || btn == 5)
return;
}
code = 0;
}
ox = x;
oy = y;
/* Encode btn into code. If no button is pressed for a motion event in
* MODE_MOUSEMANY, then encode it as a release. */
if ((!IS_SET(MODE_MOUSESGR) && e->type == ButtonRelease) || btn == 12)
code += 3;
else if (btn >= 8)
code += 128 + btn - 8;
else if (btn >= 4)
code += 64 + btn - 4;
else
code += btn - 1;
if (!IS_SET(MODE_MOUSEX10)) {
button += ((state & ShiftMask ) ? 4 : 0)
+ ((state & Mod4Mask ) ? 8 : 0)
code += ((state & ShiftMask ) ? 4 : 0)
+ ((state & Mod1Mask ) ? 8 : 0) /* meta key: alt */
+ ((state & ControlMask) ? 16 : 0);
}
if (IS_SET(MODE_MOUSESGR)) {
len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
button, x+1, y+1,
e->xbutton.type == ButtonRelease ? 'm' : 'M');
code, x+1, y+1,
e->type == ButtonRelease ? 'm' : 'M');
} else if (x < 223 && y < 223) {
len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
32+button, 32+x+1, 32+y+1);
32+code, 32+x+1, 32+y+1);
} else {
return;
}
@ -461,9 +470,13 @@ mouseaction(XEvent *e, uint release)
void
bpress(XEvent *e)
{
int btn = e->xbutton.button;
struct timespec now;
int snap;
if (1 <= btn && btn <= 11)
buttons |= 1 << (btn-1);
if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
mousereport(e);
return;
@ -472,7 +485,7 @@ bpress(XEvent *e)
if (mouseaction(e, 0))
return;
if (e->xbutton.button == Button1) {
if (btn == Button1) {
/*
* If the user clicks below predefined timeouts specific
* snapping behaviour is exposed.
@ -686,6 +699,11 @@ xsetsel(char *str)
void
brelease(XEvent *e)
{
int btn = e->xbutton.button;
if (1 <= btn && btn <= 11)
buttons &= ~(1 << (btn-1));
if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
mousereport(e);
return;
@ -693,7 +711,7 @@ brelease(XEvent *e)
if (mouseaction(e, 1))
return;
if (e->xbutton.button == Button1)
if (btn == Button1)
mousesel(e, 1);
}
@ -806,6 +824,19 @@ xloadcols(void)
loaded = 1;
}
int
xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b)
{
if (!BETWEEN(x, 0, dc.collen))
return 1;
*r = dc.col[x].color.red >> 8;
*g = dc.col[x].color.green >> 8;
*b = dc.col[x].color.blue >> 8;
return 0;
}
int
xsetcolorname(int x, const char *name)
{
@ -959,7 +990,7 @@ xloadfont(Font *f, FcPattern *pattern)
}
void
xloadfonts(char *fontstr, double fontsize)
xloadfonts(const char *fontstr, double fontsize)
{
FcPattern *pattern;
double fontval;
@ -967,7 +998,7 @@ xloadfonts(char *fontstr, double fontsize)
if (fontstr[0] == '-')
pattern = XftXlfdParse(fontstr, False, False);
else
pattern = FcNameParse((FcChar8 *)fontstr);
pattern = FcNameParse((const FcChar8 *)fontstr);
if (!pattern)
die("can't open font %s\n", fontstr);
@ -1203,6 +1234,7 @@ xinit(int cols, int rows)
xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
xw.netwmiconname = XInternAtom(xw.dpy, "_NET_WM_ICON_NAME", False);
XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
@ -1489,12 +1521,12 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
/* Render underline and strikethrough. */
if (base.mode & ATTR_UNDERLINE) {
XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent * chscale + 1,
width, 1);
}
if (base.mode & ATTR_STRUCK) {
XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent * chscale / 3,
width, 1);
}
@ -1554,8 +1586,9 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
/* draw the new one */
if (IS_SET(MODE_FOCUSED)) {
switch (win.cursor) {
case 7: /* st extension: snowman (U+2603) */
g.u = 0x2603;
case 7: /* st extension */
g.u = 0x2603; /* snowman (U+2603) */
/* FALLTHROUGH */
case 0: /* Blinking Block */
case 1: /* Blinking Block (Default) */
case 2: /* Steady Block */
@ -1606,14 +1639,29 @@ xsetenv(void)
setenv("WINDOWID", buf, 1);
}
void
xseticontitle(char *p)
{
XTextProperty prop;
DEFAULT(p, opt_title);
if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
&prop) != Success)
return;
XSetWMIconName(xw.dpy, xw.win, &prop);
XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmiconname);
XFree(prop.value);
}
void
xsettitle(char *p)
{
XTextProperty prop;
DEFAULT(p, opt_title);
Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
&prop);
if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
&prop) != Success)
return;
XSetWMName(xw.dpy, xw.win, &prop);
XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
XFree(prop.value);
@ -1717,8 +1765,7 @@ xsetmode(int set, unsigned int flags)
int
xsetcursor(int cursor)
{
DEFAULT(cursor, 1);
if (!BETWEEN(cursor, 0, 6))
if (!BETWEEN(cursor, 0, 7)) /* 7: st extension */
return 1;
win.cursor = cursor;
return 0;
@ -1895,10 +1942,9 @@ run(void)
XEvent ev;
int w = win.w, h = win.h;
fd_set rfd;
int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
int ttyfd;
struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
long deltatime;
int xfd = XConnectionNumber(xw.dpy), ttyfd, xev, drawing;
struct timespec seltv, *tv, now, lastblink, trigger;
double timeout;
/* Waiting for window mapping */
do {
@ -1919,51 +1965,31 @@ run(void)
ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
cresize(w, h);
clock_gettime(CLOCK_MONOTONIC, &last);
lastblink = last;
for (xev = actionfps;;) {
for (timeout = -1, drawing = 0, lastblink = (struct timespec){0};;) {
FD_ZERO(&rfd);
FD_SET(ttyfd, &rfd);
FD_SET(xfd, &rfd);
if (XPending(xw.dpy))
timeout = 0; /* existing events might not set xfd */
seltv.tv_sec = timeout / 1E3;
seltv.tv_nsec = 1E6 * (timeout - 1E3 * seltv.tv_sec);
tv = timeout >= 0 ? &seltv : NULL;
if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
if (errno == EINTR)
continue;
die("select failed: %s\n", strerror(errno));
}
if (FD_ISSET(ttyfd, &rfd)) {
ttyread();
if (blinktimeout) {
blinkset = tattrset(ATTR_BLINK);
if (!blinkset)
MODBIT(win.mode, 0, MODE_BLINK);
}
}
if (FD_ISSET(xfd, &rfd))
xev = actionfps;
clock_gettime(CLOCK_MONOTONIC, &now);
drawtimeout.tv_sec = 0;
drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
tv = &drawtimeout;
dodraw = 0;
if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
tsetdirtattr(ATTR_BLINK);
win.mode ^= MODE_BLINK;
lastblink = now;
dodraw = 1;
}
deltatime = TIMEDIFF(now, last);
if (deltatime > 1000 / (xev ? xfps : actionfps)) {
dodraw = 1;
last = now;
}
if (FD_ISSET(ttyfd, &rfd))
ttyread();
if (dodraw) {
xev = 0;
while (XPending(xw.dpy)) {
xev = 1;
XNextEvent(xw.dpy, &ev);
if (XFilterEvent(&ev, None))
continue;
@ -1971,30 +1997,45 @@ run(void)
(handler[ev.type])(&ev);
}
/*
* To reduce flicker and tearing, when new content or event
* triggers drawing, we first wait a bit to ensure we got
* everything, and if nothing new arrives - we draw.
* We start with trying to wait minlatency ms. If more content
* arrives sooner, we retry with shorter and shorter periods,
* and eventually draw even without idle after maxlatency ms.
* Typically this results in low latency while interacting,
* maximum latency intervals during `cat huge.txt`, and perfect
* sync with periodic updates from animations/key-repeats/etc.
*/
if (FD_ISSET(ttyfd, &rfd) || xev) {
if (!drawing) {
trigger = now;
drawing = 1;
}
timeout = (maxlatency - TIMEDIFF(now, trigger)) \
/ maxlatency * minlatency;
if (timeout > 0)
continue; /* we have time, try to find idle */
}
/* idle detected or maxlatency exhausted -> draw */
timeout = -1;
if (blinktimeout && tattrset(ATTR_BLINK)) {
timeout = blinktimeout - TIMEDIFF(now, lastblink);
if (timeout <= 0) {
if (-timeout > blinktimeout) /* start visible */
win.mode |= MODE_BLINK;
win.mode ^= MODE_BLINK;
tsetdirtattr(ATTR_BLINK);
lastblink = now;
timeout = blinktimeout;
}
}
draw();
XFlush(xw.dpy);
if (xev && !FD_ISSET(xfd, &rfd))
xev--;
if (!FD_ISSET(ttyfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
if (blinkset) {
if (TIMEDIFF(now, lastblink) \
> blinktimeout) {
drawtimeout.tv_nsec = 1000;
} else {
drawtimeout.tv_nsec = (1E6 * \
(blinktimeout - \
TIMEDIFF(now,
lastblink)));
}
drawtimeout.tv_sec = \
drawtimeout.tv_nsec / 1E9;
drawtimeout.tv_nsec %= (long)1E9;
} else {
tv = NULL;
}
}
}
drawing = 0;
}
}
@ -2016,7 +2057,7 @@ main(int argc, char *argv[])
{
xw.l = xw.t = 0;
xw.isfixed = False;
win.cursor = cursorshape;
xsetcursor(cursorshape);
ARGBEGIN {
case 'a':