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Pulls latest version of st - removes all patches

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This commit is contained in:
Jonathan Hodgson 2020-09-28 12:00:33 +01:00
parent bf144b728f
commit eb5b617652
12 changed files with 373 additions and 567 deletions
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71
FAQ
View file

@ -2,12 +2,14 @@
Use the excellent tool of [utmp](https://git.suckless.org/utmp/) for this task. 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! ## Some _random program_ complains that st is unknown/not recognised/unsupported/whatever!
It means that st doesn’t have any terminfo entry on your system. Chances are It means that st doesn’t 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 did not `make install`. If you just want to test it without installing it,
you can manually run `tic -sx st.info`. you can manually run `tic -sx st.info`.
## Nothing works, and nothing is said about an unknown terminal! ## Nothing works, and nothing is said about an unknown terminal!
* Some programs just assume they’re running in xterm i.e. they don’t rely on * Some programs just assume they’re running in xterm i.e. they don’t rely on
@ -15,12 +17,21 @@ you can manually run `tic -sx st.info`.
* Some programs don’t complain about the lacking st description and default to * Some programs don’t complain about the lacking st description and default to
another terminal. In that case see the question about terminfo. another terminal. In that case see the question about terminfo.
## How do I scroll back up? ## How do I scroll back up?
Using a terminal multiplexer. * Using a terminal multiplexer.
* `st -e tmux` using C-b [
* `st -e screen` using C-a ESC
* 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.
* `st -e tmux` using C-b [
* `st -e screen` using C-a ESC
## Why doesn't the Del key work in some programs? ## Why doesn't the Del key work in some programs?
@ -77,12 +88,14 @@ If you are using zsh, then read the zsh FAQ
Putting these lines into your .zshrc will fix the problems. Putting these lines into your .zshrc will fix the problems.
## How can I use meta in 8bit mode? ## How can I use meta in 8bit mode?
St supports meta in 8bit mode, but the default terminfo entry doesn't 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 use this capability. If you want it, you have to use the 'st-meta' value
in TERM. in TERM.
## I cannot compile st in OpenBSD ## I cannot compile st in OpenBSD
OpenBSD lacks librt, despite it being mandatory in POSIX OpenBSD lacks librt, despite it being mandatory in POSIX
@ -91,6 +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 st will compile without any loss of functionality, because all the functions are
included in libc on this platform. included in libc on this platform.
## The Backspace Case ## The Backspace Case
St is emulating the Linux way of handling backspace being delete and delete being St is emulating the Linux way of handling backspace being delete and delete being
@ -152,19 +166,60 @@ terminal users wants its backspace to be how he feels it:
[1] http://www.ibb.net/~anne/keyboard.html [1] http://www.ibb.net/~anne/keyboard.html
[2] http://www.tldp.org/HOWTO/Keyboard-and-Console-HOWTO-5.html [2] http://www.tldp.org/HOWTO/Keyboard-and-Console-HOWTO-5.html
## But I really want the old grumpy behaviour of my terminal ## But I really want the old grumpy behaviour of my terminal
Apply [1]. Apply [1].
[1] https://st.suckless.org/patches/delkey [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 ## Why do images not work in st using the w3m image hack?
window. It also relies on a very specific way the terminal draws it's contents.
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 ## BadLength X error in Xft when trying to render emoji

2
LICENSE
View file

@ -1,6 +1,6 @@
MIT/X Consortium License MIT/X Consortium License
© 2014-2018 Hiltjo Posthuma <hiltjo at codemadness dot org> © 2014-2020 Hiltjo Posthuma <hiltjo at codemadness dot org>
© 2018 Devin J. Pohly <djpohly at gmail dot com> © 2018 Devin J. Pohly <djpohly at gmail dot com>
© 2014-2017 Quentin Rameau <quinq at fifth dot space> © 2014-2017 Quentin Rameau <quinq at fifth dot space>
© 2009-2012 Aurélien APTEL <aurelien dot aptel at gmail dot com> © 2009-2012 Aurélien APTEL <aurelien dot aptel at gmail dot com>

6
Makefile
View file

@ -4,7 +4,7 @@
include config.mk include config.mk
SRC = st.c x.c hb.c SRC = st.c x.c
OBJ = $(SRC:.c=.o) OBJ = $(SRC:.c=.o)
all: options st all: options st
@ -22,8 +22,7 @@ config.h:
$(CC) $(STCFLAGS) -c $< $(CC) $(STCFLAGS) -c $<
st.o: config.h st.h win.h st.o: config.h st.h win.h
x.o: arg.h config.h st.h win.h hb.h x.o: arg.h config.h st.h win.h
hb.o: st.h
$(OBJ): config.h config.mk $(OBJ): config.h config.mk
@ -32,7 +31,6 @@ st: $(OBJ)
clean: clean:
rm -f st $(OBJ) st-$(VERSION).tar.gz rm -f st $(OBJ) st-$(VERSION).tar.gz
rm config.h
dist: clean dist: clean
mkdir -p st-$(VERSION) mkdir -p st-$(VERSION)

41
config.def.h
View file

@ -5,19 +5,21 @@
* *
* font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
*/ */
static char *font = "Iosevka Nerd Font-10:antialias=true:autohint=true"; static char *font = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
static int borderpx = 0; static int borderpx = 2;
/* /*
* What program is execed by st depends of these precedence rules: * What program is execed by st depends of these precedence rules:
* 1: program passed with -e * 1: program passed with -e
* 2: utmp option * 2: scroll and/or utmp
* 3: SHELL environment variable * 3: SHELL environment variable
* 4: value of shell in /etc/passwd * 4: value of shell in /etc/passwd
* 5: value of shell in config.h * 5: value of shell in config.h
*/ */
static char *shell = "/bin/sh"; static char *shell = "/bin/sh";
char *utmp = NULL; char *utmp = NULL;
/* scroll program: to enable use a string like "scroll" */
char *scroll = NULL;
char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400"; char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400";
/* identification sequence returned in DA and DECID */ /* identification sequence returned in DA and DECID */
@ -32,7 +34,7 @@ static float chscale = 1.0;
* *
* More advanced example: L" `'\"()[]{}" * More advanced example: L" `'\"()[]{}"
*/ */
wchar_t *worddelimiters = L" "; wchar_t *worddelimiters = L" ";
/* selection timeouts (in milliseconds) */ /* selection timeouts (in milliseconds) */
static unsigned int doubleclicktimeout = 300; static unsigned int doubleclicktimeout = 300;
@ -41,9 +43,18 @@ static unsigned int tripleclicktimeout = 600;
/* alt screens */ /* alt screens */
int allowaltscreen = 1; int allowaltscreen = 1;
/* frames per second st should at maximum draw to the screen */ /* allow certain non-interactive (insecure) window operations such as:
static unsigned int xfps = 120; setting the clipboard text */
static unsigned int actionfps = 30; 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 * blinking timeout (set to 0 to disable blinking) for the terminal blinking
@ -63,7 +74,7 @@ static unsigned int cursorthickness = 2;
static int bellvolume = 0; static int bellvolume = 0;
/* default TERM value */ /* default TERM value */
char *termname = "xterm-256color"; char *termname = "st-256color";
/* /*
* spaces per tab * spaces per tab
@ -82,9 +93,6 @@ char *termname = "xterm-256color";
*/ */
unsigned int tabspaces = 8; unsigned int tabspaces = 8;
/* bg opacity */
float alpha = 0.7;
/* Terminal colors (16 first used in escape sequence) */ /* Terminal colors (16 first used in escape sequence) */
static const char *colorname[] = { static const char *colorname[] = {
/* 8 normal colors */ /* 8 normal colors */
@ -112,7 +120,6 @@ static const char *colorname[] = {
/* more colors can be added after 255 to use with DefaultXX */ /* more colors can be added after 255 to use with DefaultXX */
"#cccccc", "#cccccc",
"#555555", "#555555",
"black",
}; };
@ -121,7 +128,7 @@ static const char *colorname[] = {
* foreground, background, cursor, reverse cursor * foreground, background, cursor, reverse cursor
*/ */
unsigned int defaultfg = 7; unsigned int defaultfg = 7;
unsigned int defaultbg = 258; unsigned int defaultbg = 0;
static unsigned int defaultcs = 256; static unsigned int defaultcs = 256;
static unsigned int defaultrcs = 257; static unsigned int defaultrcs = 257;
@ -167,10 +174,10 @@ static uint forcemousemod = ShiftMask;
*/ */
static MouseShortcut mshortcuts[] = { static MouseShortcut mshortcuts[] = {
/* mask button function argument release */ /* mask button function argument release */
{ ShiftMask, Button4, kscrollup, {.i = 1} },
{ ShiftMask, Button5, kscrolldown, {.i = 1} },
{ XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 }, { XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 },
{ ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} },
{ XK_ANY_MOD, Button4, ttysend, {.s = "\031"} }, { XK_ANY_MOD, Button4, ttysend, {.s = "\031"} },
{ ShiftMask, Button5, ttysend, {.s = "\033[6;2~"} },
{ XK_ANY_MOD, Button5, ttysend, {.s = "\005"} }, { XK_ANY_MOD, Button5, ttysend, {.s = "\005"} },
}; };
@ -184,8 +191,6 @@ static Shortcut shortcuts[] = {
{ ControlMask, XK_Print, toggleprinter, {.i = 0} }, { ControlMask, XK_Print, toggleprinter, {.i = 0} },
{ ShiftMask, XK_Print, printscreen, {.i = 0} }, { ShiftMask, XK_Print, printscreen, {.i = 0} },
{ XK_ANY_MOD, XK_Print, printsel, {.i = 0} }, { XK_ANY_MOD, XK_Print, printsel, {.i = 0} },
{ TERMMOD, XK_J, zoom, {.f = +1} },
{ TERMMOD, XK_K, zoom, {.f = -1} },
{ TERMMOD, XK_Prior, zoom, {.f = +1} }, { TERMMOD, XK_Prior, zoom, {.f = +1} },
{ TERMMOD, XK_Next, zoom, {.f = -1} }, { TERMMOD, XK_Next, zoom, {.f = -1} },
{ TERMMOD, XK_Home, zoomreset, {.f = 0} }, { TERMMOD, XK_Home, zoomreset, {.f = 0} },
@ -194,8 +199,6 @@ static Shortcut shortcuts[] = {
{ TERMMOD, XK_Y, selpaste, {.i = 0} }, { TERMMOD, XK_Y, selpaste, {.i = 0} },
{ ShiftMask, XK_Insert, selpaste, {.i = 0} }, { ShiftMask, XK_Insert, selpaste, {.i = 0} },
{ TERMMOD, XK_Num_Lock, numlock, {.i = 0} }, { TERMMOD, XK_Num_Lock, numlock, {.i = 0} },
{ ShiftMask, XK_Page_Up, kscrollup, {.i = -1} },
{ ShiftMask, XK_Page_Down, kscrolldown, {.i = -1} },
}; };
/* /*

14
config.mk
View file

@ -1,5 +1,5 @@
# st version # st version
VERSION = 0.8.2 VERSION = 0.8.4
# Customize below to fit your system # Customize below to fit your system
@ -15,12 +15,10 @@ PKG_CONFIG = pkg-config
# includes and libs # includes and libs
INCS = -I$(X11INC) \ INCS = -I$(X11INC) \
`$(PKG_CONFIG) --cflags fontconfig` \ `$(PKG_CONFIG) --cflags fontconfig` \
`$(PKG_CONFIG) --cflags freetype2` \ `$(PKG_CONFIG) --cflags freetype2`
`$(PKG_CONFIG) --cflags harfbuzz` LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft -lXrender\
`$(PKG_CONFIG) --libs fontconfig` \ `$(PKG_CONFIG) --libs fontconfig` \
`$(PKG_CONFIG) --libs freetype2` \ `$(PKG_CONFIG) --libs freetype2`
`$(PKG_CONFIG) --libs harfbuzz`
# flags # flags
STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600 STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
@ -30,8 +28,8 @@ STLDFLAGS = $(LIBS) $(LDFLAGS)
# OpenBSD: # OpenBSD:
#CPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600 -D_BSD_SOURCE #CPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
#LIBS = -L$(X11LIB) -lm -lX11 -lutil -lXft \ #LIBS = -L$(X11LIB) -lm -lX11 -lutil -lXft \
# `pkg-config --libs fontconfig` \ # `$(PKG_CONFIG) --libs fontconfig` \
# `pkg-config --libs freetype2` # `$(PKG_CONFIG) --libs freetype2`
# compiler and linker # compiler and linker
# CC = c99 # CC = c99

128
hb.c
View file

@ -1,128 +0,0 @@
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <X11/Xft/Xft.h>
#include <hb.h>
#include <hb-ft.h>
#include "st.h"
void hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length);
hb_font_t *hbfindfont(XftFont *match);
typedef struct {
XftFont *match;
hb_font_t *font;
} HbFontMatch;
static int hbfontslen = 0;
static HbFontMatch *hbfontcache = NULL;
void hbunloadfonts() {
for (int i = 0; i < hbfontslen; i++)
hb_font_destroy(hbfontcache[i].font);
if (hbfontcache != NULL) {
free(hbfontcache);
hbfontcache = NULL;
}
hbfontslen = 0;
}
hb_font_t *hbfindfont(XftFont *match) {
for (int i = 0; i < hbfontslen; i++) {
if (hbfontcache[i].match == match)
return hbfontcache[i].font;
}
// Font not found in cache, caching it now.
hbfontcache = realloc(hbfontcache, sizeof(HbFontMatch) * (hbfontslen + 1));
FT_Face face = XftLockFace(match);
hb_font_t *font = hb_ft_font_create(face, NULL);
if (font == NULL)
die("Failed to load Harfbuzz font.");
XftUnlockFace(match);
hbfontcache[hbfontslen].match = match;
hbfontcache[hbfontslen].font = font;
hbfontslen += 1;
return font;
}
void hbtransform(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y) {
int start = 0, length = 1, gstart = 0;
hb_codepoint_t *codepoints = calloc(len, sizeof(hb_codepoint_t));
for (int idx = 1, specidx = 1; idx < len; idx++) {
if (glyphs[idx].mode & ATTR_WDUMMY) {
length += 1;
continue;
}
if (specs[specidx].font != specs[start].font || ATTRCMP(glyphs[gstart], glyphs[idx]) || selected(x + idx, y) != selected(x + gstart, y)) {
hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
// Reset the sequence.
length = 1;
start = specidx;
gstart = idx;
} else {
length += 1;
}
specidx++;
}
// EOL.
hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
// Apply the transformation to glyph specs.
for (int i = 0, specidx = 0; i < len; i++) {
if (glyphs[i].mode & ATTR_WDUMMY)
continue;
if (codepoints[i] != specs[specidx].glyph)
((Glyph *)glyphs)[i].mode |= ATTR_LIGA;
specs[specidx++].glyph = codepoints[i];
}
free(codepoints);
}
void hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length) {
hb_font_t *font = hbfindfont(xfont);
if (font == NULL)
return;
Rune rune;
ushort mode = USHRT_MAX;
hb_buffer_t *buffer = hb_buffer_create();
hb_buffer_set_direction(buffer, HB_DIRECTION_LTR);
// Fill buffer with codepoints.
for (int i = start; i < (start+length); i++) {
rune = string[i].u;
mode = string[i].mode;
if (mode & ATTR_WDUMMY)
rune = 0x0020;
hb_buffer_add_codepoints(buffer, &rune, 1, 0, 1);
}
// Shape the segment.
hb_shape(font, buffer, NULL, 0);
// Get new glyph info.
unsigned int len = hb_buffer_get_length(buffer);
hb_glyph_info_t *info = hb_buffer_get_glyph_infos(buffer, NULL);
// Write new codepoints.
for (int i = 0; i < length; i++) {
hb_codepoint_t gid = info[i].codepoint;
codepoints[start+i] = gid;
}
// Cleanup.
hb_buffer_destroy(buffer);
}

7
hb.h
View file

@ -1,7 +0,0 @@
#include <X11/Xft/Xft.h>
#include <hb.h>
#include <hb-ft.h>
void hbunloadfonts();
void hbtransform(XftGlyphFontSpec *, const Glyph *, int, int, int);

3
st.1
View file

@ -170,7 +170,8 @@ See the LICENSE file for the terms of redistribution.
.SH SEE ALSO .SH SEE ALSO
.BR tabbed (1), .BR tabbed (1),
.BR utmp (1), .BR utmp (1),
.BR stty (1) .BR stty (1),
.BR scroll (1)
.SH BUGS .SH BUGS
See the TODO file in the distribution. See the TODO file in the distribution.

320
st.c
View file

@ -35,17 +35,13 @@
#define ESC_ARG_SIZ 16 #define ESC_ARG_SIZ 16
#define STR_BUF_SIZ ESC_BUF_SIZ #define STR_BUF_SIZ ESC_BUF_SIZ
#define STR_ARG_SIZ ESC_ARG_SIZ #define STR_ARG_SIZ ESC_ARG_SIZ
#define HISTSIZE 10000
/* macros */ /* macros */
#define IS_SET(flag) ((term.mode & (flag)) != 0) #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 ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c)) #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
#define ISDELIM(u) (u && wcschr(worddelimiters, u)) #define ISDELIM(u) (u && wcschr(worddelimiters, u))
#define TLINE(y) ((y) < term.scr ? term.hist[((y) + term.histi - \
term.scr + HISTSIZE + 1) % HISTSIZE] : \
term.line[(y) - term.scr])
enum term_mode { enum term_mode {
MODE_WRAP = 1 << 0, MODE_WRAP = 1 << 0,
@ -55,7 +51,6 @@ enum term_mode {
MODE_ECHO = 1 << 4, MODE_ECHO = 1 << 4,
MODE_PRINT = 1 << 5, MODE_PRINT = 1 << 5,
MODE_UTF8 = 1 << 6, MODE_UTF8 = 1 << 6,
MODE_SIXEL = 1 << 7,
}; };
enum cursor_movement { enum cursor_movement {
@ -82,12 +77,11 @@ enum charset {
enum escape_state { enum escape_state {
ESC_START = 1, ESC_START = 1,
ESC_CSI = 2, ESC_CSI = 2,
ESC_STR = 4, /* OSC, PM, APC */ ESC_STR = 4, /* DCS, OSC, PM, APC */
ESC_ALTCHARSET = 8, ESC_ALTCHARSET = 8,
ESC_STR_END = 16, /* a final string was encountered */ ESC_STR_END = 16, /* a final string was encountered */
ESC_TEST = 32, /* Enter in test mode */ ESC_TEST = 32, /* Enter in test mode */
ESC_UTF8 = 64, ESC_UTF8 = 64,
ESC_DCS =128,
}; };
typedef struct { typedef struct {
@ -121,9 +115,6 @@ typedef struct {
int col; /* nb col */ int col; /* nb col */
Line *line; /* screen */ Line *line; /* screen */
Line *alt; /* alternate screen */ Line *alt; /* alternate screen */
Line hist[HISTSIZE]; /* history buffer */
int histi; /* history index */
int scr; /* scroll back */
int *dirty; /* dirtyness of lines */ int *dirty; /* dirtyness of lines */
TCursor c; /* cursor */ TCursor c; /* cursor */
int ocx; /* old cursor col */ int ocx; /* old cursor col */
@ -136,6 +127,7 @@ typedef struct {
int charset; /* current charset */ int charset; /* current charset */
int icharset; /* selected charset for sequence */ int icharset; /* selected charset for sequence */
int *tabs; int *tabs;
Rune lastc; /* last printed char outside of sequence, 0 if control */
} Term; } Term;
/* CSI Escape sequence structs */ /* CSI Escape sequence structs */
@ -192,8 +184,8 @@ static void tnewline(int);
static void tputtab(int); static void tputtab(int);
static void tputc(Rune); static void tputc(Rune);
static void treset(void); static void treset(void);
static void tscrollup(int, int, int); static void tscrollup(int, int);
static void tscrolldown(int, int, int); static void tscrolldown(int, int);
static void tsetattr(int *, int); static void tsetattr(int *, int);
static void tsetchar(Rune, Glyph *, int, int); static void tsetchar(Rune, Glyph *, int, int);
static void tsetdirt(int, int); static void tsetdirt(int, int);
@ -373,7 +365,8 @@ static const char base64_digits[] = {
char char
base64dec_getc(const char **src) base64dec_getc(const char **src)
{ {
while (**src && !isprint(**src)) (*src)++; while (**src && !isprint(**src))
(*src)++;
return **src ? *((*src)++) : '='; /* emulate padding if string ends */ return **src ? *((*src)++) : '='; /* emulate padding if string ends */
} }
@ -421,10 +414,10 @@ tlinelen(int y)
{ {
int i = term.col; int i = term.col;
if (TLINE(y)[i - 1].mode & ATTR_WRAP) if (term.line[y][i - 1].mode & ATTR_WRAP)
return i; return i;
while (i > 0 && TLINE(y)[i - 1].u == ' ') while (i > 0 && term.line[y][i - 1].u == ' ')
--i; --i;
return i; return i;
@ -533,7 +526,7 @@ selsnap(int *x, int *y, int direction)
* Snap around if the word wraps around at the end or * Snap around if the word wraps around at the end or
* beginning of a line. * beginning of a line.
*/ */
prevgp = &TLINE(*y)[*x]; prevgp = &term.line[*y][*x];
prevdelim = ISDELIM(prevgp->u); prevdelim = ISDELIM(prevgp->u);
for (;;) { for (;;) {
newx = *x + direction; newx = *x + direction;
@ -548,14 +541,14 @@ selsnap(int *x, int *y, int direction)
yt = *y, xt = *x; yt = *y, xt = *x;
else else
yt = newy, xt = newx; yt = newy, xt = newx;
if (!(TLINE(yt)[xt].mode & ATTR_WRAP)) if (!(term.line[yt][xt].mode & ATTR_WRAP))
break; break;
} }
if (newx >= tlinelen(newy)) if (newx >= tlinelen(newy))
break; break;
gp = &TLINE(newy)[newx]; gp = &term.line[newy][newx];
delim = ISDELIM(gp->u); delim = ISDELIM(gp->u);
if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
|| (delim && gp->u != prevgp->u))) || (delim && gp->u != prevgp->u)))
@ -576,14 +569,14 @@ selsnap(int *x, int *y, int direction)
*x = (direction < 0) ? 0 : term.col - 1; *x = (direction < 0) ? 0 : term.col - 1;
if (direction < 0) { if (direction < 0) {
for (; *y > 0; *y += direction) { for (; *y > 0; *y += direction) {
if (!(TLINE(*y-1)[term.col-1].mode if (!(term.line[*y-1][term.col-1].mode
& ATTR_WRAP)) { & ATTR_WRAP)) {
break; break;
} }
} }
} else if (direction > 0) { } else if (direction > 0) {
for (; *y < term.row-1; *y += direction) { for (; *y < term.row-1; *y += direction) {
if (!(TLINE(*y)[term.col-1].mode if (!(term.line[*y][term.col-1].mode
& ATTR_WRAP)) { & ATTR_WRAP)) {
break; break;
} }
@ -614,13 +607,13 @@ getsel(void)
} }
if (sel.type == SEL_RECTANGULAR) { if (sel.type == SEL_RECTANGULAR) {
gp = &TLINE(y)[sel.nb.x]; gp = &term.line[y][sel.nb.x];
lastx = sel.ne.x; lastx = sel.ne.x;
} else { } else {
gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0]; gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1; lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
} }
last = &TLINE(y)[MIN(lastx, linelen-1)]; last = &term.line[y][MIN(lastx, linelen-1)];
while (last >= gp && last->u == ' ') while (last >= gp && last->u == ' ')
--last; --last;
@ -640,7 +633,8 @@ getsel(void)
* st. * st.
* FIXME: Fix the computer world. * 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++ = '\n';
} }
*ptr = 0; *ptr = 0;
@ -671,7 +665,7 @@ die(const char *errstr, ...)
void void
execsh(char *cmd, char **args) execsh(char *cmd, char **args)
{ {
char *sh, *prog; char *sh, *prog, *arg;
const struct passwd *pw; const struct passwd *pw;
errno = 0; errno = 0;
@ -685,13 +679,20 @@ execsh(char *cmd, char **args)
if ((sh = getenv("SHELL")) == NULL) if ((sh = getenv("SHELL")) == NULL)
sh = (pw->pw_shell[0]) ? pw->pw_shell : cmd; sh = (pw->pw_shell[0]) ? pw->pw_shell : cmd;
if (args) if (args) {
prog = args[0]; prog = args[0];
else if (utmp) arg = NULL;
} else if (scroll) {
prog = scroll;
arg = utmp ? utmp : sh;
} else if (utmp) {
prog = utmp; prog = utmp;
else arg = NULL;
} else {
prog = sh; prog = sh;
DEFAULT(args, ((char *[]) {prog, NULL})); arg = NULL;
}
DEFAULT(args, ((char *[]) {prog, arg, NULL}));
unsetenv("COLUMNS"); unsetenv("COLUMNS");
unsetenv("LINES"); unsetenv("LINES");
@ -729,7 +730,7 @@ sigchld(int a)
die("child exited with status %d\n", WEXITSTATUS(stat)); die("child exited with status %d\n", WEXITSTATUS(stat));
else if (WIFSIGNALED(stat)) else if (WIFSIGNALED(stat))
die("child terminated due to signal %d\n", WTERMSIG(stat)); die("child terminated due to signal %d\n", WTERMSIG(stat));
exit(0); _exit(0);
} }
void void
@ -822,30 +823,31 @@ ttyread(void)
{ {
static char buf[BUFSIZ]; static char buf[BUFSIZ];
static int buflen = 0; static int buflen = 0;
int written; int ret, written;
int ret;
/* append read bytes to unprocessed bytes */ /* append read bytes to unprocessed bytes */
if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0) ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);
switch (ret) {
case 0:
exit(0);
case -1:
die("couldn't read from shell: %s\n", strerror(errno)); die("couldn't read from shell: %s\n", strerror(errno));
buflen += ret; default:
buflen += ret;
written = twrite(buf, buflen, 0); written = twrite(buf, buflen, 0);
buflen -= written; buflen -= written;
/* keep any uncomplete utf8 char for the next call */ /* keep any incomplete UTF-8 byte sequence for the next call */
if (buflen > 0) if (buflen > 0)
memmove(buf, buf + written, buflen); memmove(buf, buf + written, buflen);
return ret;
return ret; }
} }
void void
ttywrite(const char *s, size_t n, int may_echo) ttywrite(const char *s, size_t n, int may_echo)
{ {
const char *next; const char *next;
Arg arg = (Arg) { .i = term.scr };
kscrolldown(&arg);
if (may_echo && IS_SET(MODE_ECHO)) if (may_echo && IS_SET(MODE_ECHO))
twrite(s, n, 1); twrite(s, n, 1);
@ -1057,53 +1059,13 @@ tswapscreen(void)
} }
void void
kscrolldown(const Arg* a) tscrolldown(int orig, int n)
{
int n = a->i;
if (n < 0)
n = term.row + n;
if (n > term.scr)
n = term.scr;
if (term.scr > 0) {
term.scr -= n;
selscroll(0, -n);
tfulldirt();
}
}
void
kscrollup(const Arg* a)
{
int n = a->i;
if (n < 0)
n = term.row + n;
if (term.scr <= HISTSIZE-n) {
term.scr += n;
selscroll(0, n);
tfulldirt();
}
}
void
tscrolldown(int orig, int n, int copyhist)
{ {
int i; int i;
Line temp; Line temp;
LIMIT(n, 0, term.bot-orig+1); LIMIT(n, 0, term.bot-orig+1);
if (copyhist) {
term.histi = (term.histi - 1 + HISTSIZE) % HISTSIZE;
temp = term.hist[term.histi];
term.hist[term.histi] = term.line[term.bot];
term.line[term.bot] = temp;
}
tsetdirt(orig, term.bot-n); tsetdirt(orig, term.bot-n);
tclearregion(0, term.bot-n+1, term.col-1, term.bot); tclearregion(0, term.bot-n+1, term.col-1, term.bot);
@ -1117,23 +1079,13 @@ tscrolldown(int orig, int n, int copyhist)
} }
void void
tscrollup(int orig, int n, int copyhist) tscrollup(int orig, int n)
{ {
int i; int i;
Line temp; Line temp;
LIMIT(n, 0, term.bot-orig+1); LIMIT(n, 0, term.bot-orig+1);
if (copyhist) {
term.histi = (term.histi + 1) % HISTSIZE;
temp = term.hist[term.histi];
term.hist[term.histi] = term.line[orig];
term.line[orig] = temp;
}
if (term.scr > 0 && term.scr < HISTSIZE)
term.scr = MIN(term.scr + n, HISTSIZE-1);
tclearregion(0, orig, term.col-1, orig+n-1); tclearregion(0, orig, term.col-1, orig+n-1);
tsetdirt(orig+n, term.bot); tsetdirt(orig+n, term.bot);
@ -1152,27 +1104,17 @@ selscroll(int orig, int n)
if (sel.ob.x == -1) if (sel.ob.x == -1)
return; return;
if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) { if (BETWEEN(sel.nb.y, orig, term.bot) != BETWEEN(sel.ne.y, orig, term.bot)) {
if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) { 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(); 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 { } else {
if (sel.ob.y < term.top) { selnormalize();
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();
} }
} }
@ -1182,7 +1124,7 @@ tnewline(int first_col)
int y = term.c.y; int y = term.c.y;
if (y == term.bot) { if (y == term.bot) {
tscrollup(term.top, 1, 1); tscrollup(term.top, 1);
} else { } else {
y++; y++;
} }
@ -1347,14 +1289,14 @@ void
tinsertblankline(int n) tinsertblankline(int n)
{ {
if (BETWEEN(term.c.y, term.top, term.bot)) if (BETWEEN(term.c.y, term.top, term.bot))
tscrolldown(term.c.y, n, 0); tscrolldown(term.c.y, n);
} }
void void
tdeleteline(int n) tdeleteline(int n)
{ {
if (BETWEEN(term.c.y, term.top, term.bot)) if (BETWEEN(term.c.y, term.top, term.bot))
tscrollup(term.c.y, n, 0); tscrollup(term.c.y, n);
} }
int32_t int32_t
@ -1704,6 +1646,12 @@ csihandle(void)
if (csiescseq.arg[0] == 0) if (csiescseq.arg[0] == 0)
ttywrite(vtiden, strlen(vtiden), 0); ttywrite(vtiden, strlen(vtiden), 0);
break; 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 'C': /* CUF -- Cursor <n> Forward */
case 'a': /* HPR -- Cursor <n> Forward */ case 'a': /* HPR -- Cursor <n> Forward */
DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[0], 1);
@ -1785,11 +1733,11 @@ csihandle(void)
break; break;
case 'S': /* SU -- Scroll <n> line up */ case 'S': /* SU -- Scroll <n> line up */
DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[0], 1);
tscrollup(term.top, csiescseq.arg[0], 0); tscrollup(term.top, csiescseq.arg[0]);
break; break;
case 'T': /* SD -- Scroll <n> line down */ case 'T': /* SD -- Scroll <n> line down */
DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[0], 1);
tscrolldown(term.top, csiescseq.arg[0], 0); tscrolldown(term.top, csiescseq.arg[0]);
break; break;
case 'L': /* IL -- Insert <n> blank lines */ case 'L': /* IL -- Insert <n> blank lines */
DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[0], 1);
@ -1827,7 +1775,7 @@ csihandle(void)
break; break;
case 'n': /* DSR – Device Status Report (cursor position) */ case 'n': /* DSR – Device Status Report (cursor position) */
if (csiescseq.arg[0] == 6) { 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); term.c.y+1, term.c.x+1);
ttywrite(buf, len, 0); ttywrite(buf, len, 0);
} }
@ -1911,7 +1859,7 @@ strhandle(void)
xsettitle(strescseq.args[1]); xsettitle(strescseq.args[1]);
return; return;
case 52: case 52:
if (narg > 2) { if (narg > 2 && allowwindowops) {
dec = base64dec(strescseq.args[2]); dec = base64dec(strescseq.args[2]);
if (dec) { if (dec) {
xsetsel(dec); xsetsel(dec);
@ -1947,7 +1895,6 @@ strhandle(void)
xsettitle(strescseq.args[0]); xsettitle(strescseq.args[0]);
return; return;
case 'P': /* DCS -- Device Control String */ case 'P': /* DCS -- Device Control String */
term.mode |= ESC_DCS;
case '_': /* APC -- Application Program Command */ case '_': /* APC -- Application Program Command */
case '^': /* PM -- Privacy Message */ case '^': /* PM -- Privacy Message */
return; return;
@ -1979,59 +1926,6 @@ strparse(void)
} }
} }
void
externalpipe(const Arg *arg)
{
int to[2];
char buf[UTF_SIZ];
void (*oldsigpipe)(int);
Glyph *bp, *end;
int lastpos, n, newline;
if (pipe(to) == -1)
return;
switch (fork()) {
case -1:
close(to[0]);
close(to[1]);
return;
case 0:
dup2(to[0], STDIN_FILENO);
close(to[0]);
close(to[1]);
execvp(((char **)arg->v)[0], (char **)arg->v);
fprintf(stderr, "st: execvp %s\n", ((char **)arg->v)[0]);
perror("failed");
exit(0);
}
close(to[0]);
/* ignore sigpipe for now, in case child exists early */
oldsigpipe = signal(SIGPIPE, SIG_IGN);
newline = 0;
for (n = 0; n < term.row; n++) {
bp = term.line[n];
lastpos = MIN(tlinelen(n) + 1, term.col) - 1;
if (lastpos < 0)
break;
end = &bp[lastpos + 1];
for (; bp < end; ++bp)
if (xwrite(to[1], buf, utf8encode(bp->u, buf)) < 0)
break;
if ((newline = term.line[n][lastpos].mode & ATTR_WRAP))
continue;
if (xwrite(to[1], "\n", 1) < 0)
break;
newline = 0;
}
if (newline)
(void)xwrite(to[1], "\n", 1);
close(to[1]);
/* restore */
signal(SIGPIPE, oldsigpipe);
}
void void
strdump(void) strdump(void)
{ {
@ -2123,7 +2017,7 @@ tdumpline(int n)
bp = &term.line[n][0]; bp = &term.line[n][0];
end = &bp[MIN(tlinelen(n), term.col) - 1]; end = &bp[MIN(tlinelen(n), term.col) - 1];
if (bp != end || bp->u != ' ') { if (bp != end || bp->u != ' ') {
for ( ;bp <= end; ++bp) for ( ; bp <= end; ++bp)
tprinter(buf, utf8encode(bp->u, buf)); tprinter(buf, utf8encode(bp->u, buf));
} }
tprinter("\n", 1); tprinter("\n", 1);
@ -2194,12 +2088,9 @@ tdectest(char c)
void void
tstrsequence(uchar c) tstrsequence(uchar c)
{ {
strreset();
switch (c) { switch (c) {
case 0x90: /* DCS -- Device Control String */ case 0x90: /* DCS -- Device Control String */
c = 'P'; c = 'P';
term.esc |= ESC_DCS;
break; break;
case 0x9f: /* APC -- Application Program Command */ case 0x9f: /* APC -- Application Program Command */
c = '_'; c = '_';
@ -2211,6 +2102,7 @@ tstrsequence(uchar c)
c = ']'; c = ']';
break; break;
} }
strreset();
strescseq.type = c; strescseq.type = c;
term.esc |= ESC_STR; term.esc |= ESC_STR;
} }
@ -2253,6 +2145,7 @@ tcontrolcode(uchar ascii)
return; return;
case '\032': /* SUB */ case '\032': /* SUB */
tsetchar('?', &term.c.attr, term.c.x, term.c.y); tsetchar('?', &term.c.attr, term.c.x, term.c.y);
/* FALLTHROUGH */
case '\030': /* CAN */ case '\030': /* CAN */
csireset(); csireset();
break; break;
@ -2348,7 +2241,7 @@ eschandle(uchar ascii)
return 0; return 0;
case 'D': /* IND -- Linefeed */ case 'D': /* IND -- Linefeed */
if (term.c.y == term.bot) { if (term.c.y == term.bot) {
tscrollup(term.top, 1, 1); tscrollup(term.top, 1);
} else { } else {
tmoveto(term.c.x, term.c.y+1); tmoveto(term.c.x, term.c.y+1);
} }
@ -2361,7 +2254,7 @@ eschandle(uchar ascii)
break; break;
case 'M': /* RI -- Reverse index */ case 'M': /* RI -- Reverse index */
if (term.c.y == term.top) { if (term.c.y == term.top) {
tscrolldown(term.top, 1, 1); tscrolldown(term.top, 1);
} else { } else {
tmoveto(term.c.x, term.c.y-1); tmoveto(term.c.x, term.c.y-1);
} }
@ -2407,15 +2300,13 @@ tputc(Rune u)
Glyph *gp; Glyph *gp;
control = ISCONTROL(u); control = ISCONTROL(u);
if (!IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) { if (u < 127 || !IS_SET(MODE_UTF8)) {
c[0] = u; c[0] = u;
width = len = 1; width = len = 1;
} else { } else {
len = utf8encode(u, c); len = utf8encode(u, c);
if (!control && (width = wcwidth(u)) == -1) { if (!control && (width = wcwidth(u)) == -1)
memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
width = 1; width = 1;
}
} }
if (IS_SET(MODE_PRINT)) if (IS_SET(MODE_PRINT))
@ -2430,23 +2321,11 @@ tputc(Rune u)
if (term.esc & ESC_STR) { if (term.esc & ESC_STR) {
if (u == '\a' || u == 030 || u == 032 || u == 033 || if (u == '\a' || u == 030 || u == 032 || u == 033 ||
ISCONTROLC1(u)) { ISCONTROLC1(u)) {
term.esc &= ~(ESC_START|ESC_STR|ESC_DCS); term.esc &= ~(ESC_START|ESC_STR);
if (IS_SET(MODE_SIXEL)) {
/* TODO: render sixel */;
term.mode &= ~MODE_SIXEL;
return;
}
term.esc |= ESC_STR_END; term.esc |= ESC_STR_END;
goto check_control_code; 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) { if (strescseq.len+len >= strescseq.siz) {
/* /*
* Here is a bug in terminals. If the user never sends * Here is a bug in terminals. If the user never sends
@ -2483,6 +2362,8 @@ check_control_code:
/* /*
* control codes are not shown ever * control codes are not shown ever
*/ */
if (!term.esc)
term.lastc = 0;
return; return;
} else if (term.esc & ESC_START) { } else if (term.esc & ESC_START) {
if (term.esc & ESC_CSI) { if (term.esc & ESC_CSI) {
@ -2513,7 +2394,7 @@ check_control_code:
*/ */
return; 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(); selclear();
gp = &term.line[term.c.y][term.c.x]; gp = &term.line[term.c.y][term.c.x];
@ -2532,6 +2413,7 @@ check_control_code:
} }
tsetchar(u, &term.c.attr, term.c.x, term.c.y); tsetchar(u, &term.c.attr, term.c.x, term.c.y);
term.lastc = u;
if (width == 2) { if (width == 2) {
gp->mode |= ATTR_WIDE; gp->mode |= ATTR_WIDE;
@ -2555,7 +2437,7 @@ twrite(const char *buf, int buflen, int show_ctrl)
int n; int n;
for (n = 0; n < buflen; n += charsize) { 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 */ /* process a complete utf8 char */
charsize = utf8decode(buf + n, &u, buflen - n); charsize = utf8decode(buf + n, &u, buflen - n);
if (charsize == 0) if (charsize == 0)
@ -2582,7 +2464,7 @@ twrite(const char *buf, int buflen, int show_ctrl)
void void
tresize(int col, int row) tresize(int col, int row)
{ {
int i, j; int i;
int minrow = MIN(row, term.row); int minrow = MIN(row, term.row);
int mincol = MIN(col, term.col); int mincol = MIN(col, term.col);
int *bp; int *bp;
@ -2619,14 +2501,6 @@ tresize(int col, int row)
term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty)); term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs)); term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
for (i = 0; i < HISTSIZE; i++) {
term.hist[i] = xrealloc(term.hist[i], col * sizeof(Glyph));
for (j = mincol; j < col; j++) {
term.hist[i][j] = term.c.attr;
term.hist[i][j].u = ' ';
}
}
/* resize each row to new width, zero-pad if needed */ /* resize each row to new width, zero-pad if needed */
for (i = 0; i < minrow; i++) { for (i = 0; i < minrow; i++) {
term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph)); term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
@ -2679,19 +2553,20 @@ void
drawregion(int x1, int y1, int x2, int y2) drawregion(int x1, int y1, int x2, int y2)
{ {
int y; int y;
for (y = y1; y < y2; y++) { for (y = y1; y < y2; y++) {
if (!term.dirty[y]) if (!term.dirty[y])
continue; continue;
term.dirty[y] = 0; term.dirty[y] = 0;
xdrawline(TLINE(y), x1, y, x2); xdrawline(term.line[y], x1, y, x2);
} }
} }
void void
draw(void) draw(void)
{ {
int cx = term.c.x; int cx = term.c.x, ocx = term.ocx, ocy = term.ocy;
if (!xstartdraw()) if (!xstartdraw())
return; return;
@ -2705,20 +2580,13 @@ draw(void)
cx--; cx--;
drawregion(0, 0, term.col, term.row); drawregion(0, 0, term.col, term.row);
if (term.scr == 0) { xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
// Draw current line to format ligatures properly. term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
xdrawline(term.line[term.c.y], 0, term.c.y, term.col); term.ocx = cx;
term.ocy = term.c.y;
xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
// If cursor was on a transformed glyph, we need to redraw the previous line
if (term.ocy != term.c.y && (term.line[term.ocy][term.ocx].mode & ATTR_LIGA))
xdrawline(term.line[term.ocy], 0, term.ocy, term.col);
}
term.ocx = cx, term.ocy = term.c.y;
xfinishdraw(); xfinishdraw();
xximspot(term.ocx, term.ocy); if (ocx != term.ocx || ocy != term.ocy)
xximspot(term.ocx, term.ocy);
} }
void void

18
st.h
View file

@ -11,8 +11,7 @@
#define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d)) #define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d))
#define DEFAULT(a, b) (a) = (a) ? (a) : (b) #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x) #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
#define ATTRCMP(a, b) (((a).mode & (~ATTR_WRAP) & (~ATTR_LIGA)) != ((b).mode & (~ATTR_WRAP) & (~ATTR_LIGA)) || \ #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
(a).fg != (b).fg || \
(a).bg != (b).bg) (a).bg != (b).bg)
#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \ #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
(t1.tv_nsec-t2.tv_nsec)/1E6) (t1.tv_nsec-t2.tv_nsec)/1E6)
@ -34,7 +33,6 @@ enum glyph_attribute {
ATTR_WRAP = 1 << 8, ATTR_WRAP = 1 << 8,
ATTR_WIDE = 1 << 9, ATTR_WIDE = 1 << 9,
ATTR_WDUMMY = 1 << 10, ATTR_WDUMMY = 1 << 10,
ATTR_LIGA = 1 << 11,
ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT, ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
}; };
@ -79,20 +77,10 @@ typedef union {
const char *s; const char *s;
} Arg; } Arg;
typedef struct {
uint b;
uint mask;
void (*func)(const Arg *);
const Arg arg;
} MouseKey;
void die(const char *, ...); void die(const char *, ...);
void redraw(void); void redraw(void);
void draw(void); void draw(void);
void kscrolldown(const Arg *);
void kscrollup(const Arg *);
void externalpipe(const Arg *);
void printscreen(const Arg *); void printscreen(const Arg *);
void printsel(const Arg *); void printsel(const Arg *);
void sendbreak(const Arg *); void sendbreak(const Arg *);
@ -125,13 +113,13 @@ char *xstrdup(char *);
/* config.h globals */ /* config.h globals */
extern char *utmp; extern char *utmp;
extern char *scroll;
extern char *stty_args; extern char *stty_args;
extern char *vtiden; extern char *vtiden;
extern wchar_t *worddelimiters; extern wchar_t *worddelimiters;
extern int allowaltscreen; extern int allowaltscreen;
extern int allowwindowops;
extern char *termname; extern char *termname;
extern unsigned int tabspaces; extern unsigned int tabspaces;
extern unsigned int defaultfg; extern unsigned int defaultfg;
extern unsigned int defaultbg; extern unsigned int defaultbg;
extern MouseKey mkeys[];
extern float alpha;

33
st.info
View file

@ -1,4 +1,4 @@
st| simpleterm, st-mono| simpleterm monocolor,
acsc=+C\,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~, acsc=+C\,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
am, am,
bce, bce,
@ -10,7 +10,7 @@ st| simpleterm,
civis=\E[?25l, civis=\E[?25l,
clear=\E[H\E[2J, clear=\E[H\E[2J,
cnorm=\E[?12l\E[?25h, cnorm=\E[?12l\E[?25h,
colors#8, colors#2,
cols#80, cols#80,
cr=^M, cr=^M,
csr=\E[%i%p1%d;%p2%dr, csr=\E[%i%p1%d;%p2%dr,
@ -158,6 +158,7 @@ st| simpleterm,
rc=\E8, rc=\E8,
rev=\E[7m, rev=\E[7m,
ri=\EM, ri=\EM,
rin=\E[%p1%dT,
ritm=\E[23m, ritm=\E[23m,
rmacs=\E(B, rmacs=\E(B,
rmcup=\E[?1049l, rmcup=\E[?1049l,
@ -168,13 +169,8 @@ st| simpleterm,
rs1=\Ec, rs1=\Ec,
rs2=\E[4l\E>\E[?1034l, rs2=\E[4l\E>\E[?1034l,
sc=\E7, sc=\E7,
setab=\E[4%p1%dm,
setaf=\E[3%p1%dm,
setb=\E[4%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
setf=\E[3%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
sgr0=\E[0m,
sgr=%?%p9%t\E(0%e\E(B%;\E[0%?%p6%t;1%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;%?%p7%t;8%;m,
sitm=\E[3m, sitm=\E[3m,
sgr0=\E[0m,
smacs=\E(0, smacs=\E(0,
smcup=\E[?1049h, smcup=\E[?1049h,
smir=\E[4h, smir=\E[4h,
@ -188,12 +184,23 @@ st| simpleterm,
# XTerm extensions # XTerm extensions
rmxx=\E[29m, rmxx=\E[29m,
smxx=\E[9m, 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) # tmux extensions, see TERMINFO EXTENSIONS in tmux(1)
Tc, Tc,
Ms=\E]52;%p1%s;%p2%s\007, Ms=\E]52;%p1%s;%p2%s\007,
Se=\E[2 q, Se=\E[2 q,
Ss=\E[%p1%d q, Ss=\E[%p1%d q,
st| simpleterm,
use=st-mono,
colors#8,
setab=\E[4%p1%dm,
setaf=\E[3%p1%dm,
setb=\E[4%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
setf=\E[3%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
sgr=%?%p9%t\E(0%e\E(B%;\E[0%?%p6%t;1%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;%?%p7%t;8%;m,
st-256color| simpleterm with 256 colors, st-256color| simpleterm with 256 colors,
use=st, use=st,
ccc, ccc,
@ -220,3 +227,13 @@ st-meta-256color| simpleterm with meta key and 256 colors,
smm=\E[?1034h, smm=\E[?1034h,
rs2=\E[4l\E>\E[?1034h, rs2=\E[4l\E>\E[?1034h,
is2=\E[4l\E>\E[?1034h, is2=\E[4l\E>\E[?1034h,
st-bs| simpleterm with backspace as backspace,
use=st,
kbs=\010,
kdch1=\177,
st-bs-256color| simpleterm with backspace as backspace and 256colors,
use=st-256color,
kbs=\010,
kdch1=\177,

297
x.c
View file

@ -15,11 +15,10 @@
#include <X11/Xft/Xft.h> #include <X11/Xft/Xft.h>
#include <X11/XKBlib.h> #include <X11/XKBlib.h>
static char *argv0; char *argv0;
#include "arg.h" #include "arg.h"
#include "st.h" #include "st.h"
#include "win.h" #include "win.h"
#include "hb.h"
/* types used in config.h */ /* types used in config.h */
typedef struct { typedef struct {
@ -95,14 +94,17 @@ typedef struct {
Drawable buf; Drawable buf;
GlyphFontSpec *specbuf; /* font spec buffer used for rendering */ GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
Atom xembed, wmdeletewin, netwmname, netwmpid; Atom xembed, wmdeletewin, netwmname, netwmpid;
XIM xim; struct {
XIC xic; XIM xim;
XIC xic;
XPoint spot;
XVaNestedList spotlist;
} ime;
Draw draw; Draw draw;
Visual *vis; Visual *vis;
XSetWindowAttributes attrs; XSetWindowAttributes attrs;
int scr; int scr;
int isfixed; /* is fixed geometry? */ int isfixed; /* is fixed geometry? */
int depth; /* bit depth */
int l, t; /* left and top offset */ int l, t; /* left and top offset */
int gm; /* geometry mask */ int gm; /* geometry mask */
} XWindow; } XWindow;
@ -144,9 +146,10 @@ static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
static void xdrawglyph(Glyph, int, int); static void xdrawglyph(Glyph, int, int);
static void xclear(int, int, int, int); static void xclear(int, int, int, int);
static int xgeommasktogravity(int); static int xgeommasktogravity(int);
static void ximopen(Display *); static int ximopen(Display *);
static void ximinstantiate(Display *, XPointer, XPointer); static void ximinstantiate(Display *, XPointer, XPointer);
static void ximdestroy(XIM, XPointer, XPointer); static void ximdestroy(XIM, XPointer, XPointer);
static int xicdestroy(XIC, XPointer, XPointer);
static void xinit(int, int); static void xinit(int, int);
static void cresize(int, int); static void cresize(int, int);
static void xresize(int, int); static void xresize(int, int);
@ -168,6 +171,7 @@ static void kpress(XEvent *);
static void cmessage(XEvent *); static void cmessage(XEvent *);
static void resize(XEvent *); static void resize(XEvent *);
static void focus(XEvent *); static void focus(XEvent *);
static uint buttonmask(uint);
static int mouseaction(XEvent *, uint); static int mouseaction(XEvent *, uint);
static void brelease(XEvent *); static void brelease(XEvent *);
static void bpress(XEvent *); static void bpress(XEvent *);
@ -239,7 +243,6 @@ static char *usedfont = NULL;
static double usedfontsize = 0; static double usedfontsize = 0;
static double defaultfontsize = 0; static double defaultfontsize = 0;
static char *opt_alpha = NULL;
static char *opt_class = NULL; static char *opt_class = NULL;
static char **opt_cmd = NULL; static char **opt_cmd = NULL;
static char *opt_embed = NULL; static char *opt_embed = NULL;
@ -421,16 +424,30 @@ mousereport(XEvent *e)
ttywrite(buf, len, 0); ttywrite(buf, len, 0);
} }
uint
buttonmask(uint button)
{
return button == Button1 ? Button1Mask
: button == Button2 ? Button2Mask
: button == Button3 ? Button3Mask
: button == Button4 ? Button4Mask
: button == Button5 ? Button5Mask
: 0;
}
int int
mouseaction(XEvent *e, uint release) mouseaction(XEvent *e, uint release)
{ {
MouseShortcut *ms; MouseShortcut *ms;
/* ignore Button<N>mask for Button<N> - it's set on release */
uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) { for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
if (ms->release == release && if (ms->release == release &&
ms->button == e->xbutton.button && ms->button == e->xbutton.button &&
(match(ms->mod, e->xbutton.state) || /* exact or forced */ (match(ms->mod, state) || /* exact or forced */
match(ms->mod, e->xbutton.state & ~forcemousemod))) { match(ms->mod, state & ~forcemousemod))) {
ms->func(&(ms->arg)); ms->func(&(ms->arg));
return 1; return 1;
} }
@ -656,7 +673,6 @@ setsel(char *str, Time t)
XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t); XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win) if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
selclear(); selclear();
clipcopy(NULL);
} }
void void
@ -718,7 +734,7 @@ xresize(int col, int row)
XFreePixmap(xw.dpy, xw.buf); XFreePixmap(xw.dpy, xw.buf);
xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h, xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
xw.depth); DefaultDepth(xw.dpy, xw.scr));
XftDrawChange(xw.draw, xw.buf); XftDrawChange(xw.draw, xw.buf);
xclear(0, 0, win.w, win.h); xclear(0, 0, win.w, win.h);
@ -778,13 +794,6 @@ xloadcols(void)
else else
die("could not allocate color %d\n", i); die("could not allocate color %d\n", i);
} }
/* set alpha value of bg color */
if (opt_alpha)
alpha = strtof(opt_alpha, NULL);
dc.col[defaultbg].color.alpha = (unsigned short)(0xffff * alpha);
dc.col[defaultbg].pixel &= 0x00FFFFFF;
dc.col[defaultbg].pixel |= (unsigned char)(0xff * alpha) << 24;
loaded = 1; loaded = 1;
} }
@ -1022,9 +1031,6 @@ xunloadfont(Font *f)
void void
xunloadfonts(void) xunloadfonts(void)
{ {
/* Clear Harfbuzz font cache */
hbunloadfonts();
/* Free the loaded fonts in the font cache. */ /* Free the loaded fonts in the font cache. */
while (frclen > 0) while (frclen > 0)
XftFontClose(xw.dpy, frc[--frclen].font); XftFontClose(xw.dpy, frc[--frclen].font);
@ -1035,41 +1041,58 @@ xunloadfonts(void)
xunloadfont(&dc.ibfont); xunloadfont(&dc.ibfont);
} }
void int
ximopen(Display *dpy) ximopen(Display *dpy)
{ {
XIMCallback destroy = { .client_data = NULL, .callback = ximdestroy }; XIMCallback imdestroy = { .client_data = NULL, .callback = ximdestroy };
XICCallback icdestroy = { .client_data = NULL, .callback = xicdestroy };
if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) { xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
XSetLocaleModifiers("@im=local"); if (xw.ime.xim == NULL)
if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) { return 0;
XSetLocaleModifiers("@im=");
if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &imdestroy, NULL))
die("XOpenIM failed. Could not open input device.\n"); fprintf(stderr, "XSetIMValues: "
} "Could not set XNDestroyCallback.\n");
xw.ime.spotlist = XVaCreateNestedList(0, XNSpotLocation, &xw.ime.spot,
NULL);
if (xw.ime.xic == NULL) {
xw.ime.xic = XCreateIC(xw.ime.xim, XNInputStyle,
XIMPreeditNothing | XIMStatusNothing,
XNClientWindow, xw.win,
XNDestroyCallback, &icdestroy,
NULL);
} }
if (XSetIMValues(xw.xim, XNDestroyCallback, &destroy, NULL) != NULL) if (xw.ime.xic == NULL)
die("XSetIMValues failed. Could not set input method value.\n"); fprintf(stderr, "XCreateIC: Could not create input context.\n");
xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
XNClientWindow, xw.win, XNFocusWindow, xw.win, NULL); return 1;
if (xw.xic == NULL)
die("XCreateIC failed. Could not obtain input method.\n");
} }
void void
ximinstantiate(Display *dpy, XPointer client, XPointer call) ximinstantiate(Display *dpy, XPointer client, XPointer call)
{ {
ximopen(dpy); if (ximopen(dpy))
XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL, XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
ximinstantiate, NULL); ximinstantiate, NULL);
} }
void void
ximdestroy(XIM xim, XPointer client, XPointer call) ximdestroy(XIM xim, XPointer client, XPointer call)
{ {
xw.xim = NULL; xw.ime.xim = NULL;
XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL, XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
ximinstantiate, NULL); ximinstantiate, NULL);
XFree(xw.ime.spotlist);
}
int
xicdestroy(XIC xim, XPointer client, XPointer call)
{
xw.ime.xic = NULL;
return 1;
} }
void void
@ -1080,23 +1103,11 @@ xinit(int cols, int rows)
Window parent; Window parent;
pid_t thispid = getpid(); pid_t thispid = getpid();
XColor xmousefg, xmousebg; XColor xmousefg, xmousebg;
XWindowAttributes attr;
XVisualInfo vis;
if (!(xw.dpy = XOpenDisplay(NULL))) if (!(xw.dpy = XOpenDisplay(NULL)))
die("can't open display\n"); die("can't open display\n");
xw.scr = XDefaultScreen(xw.dpy); xw.scr = XDefaultScreen(xw.dpy);
xw.vis = XDefaultVisual(xw.dpy, xw.scr);
if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0)))) {
parent = XRootWindow(xw.dpy, xw.scr);
xw.depth = 32;
} else {
XGetWindowAttributes(xw.dpy, parent, &attr);
xw.depth = attr.depth;
}
XMatchVisualInfo(xw.dpy, xw.scr, xw.depth, TrueColor, &vis);
xw.vis = vis.visual;
/* font */ /* font */
if (!FcInit()) if (!FcInit())
@ -1106,7 +1117,7 @@ xinit(int cols, int rows)
xloadfonts(usedfont, 0); xloadfonts(usedfont, 0);
/* colors */ /* colors */
xw.cmap = XCreateColormap(xw.dpy, parent, xw.vis, None); xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
xloadcols(); xloadcols();
/* adjust fixed window geometry */ /* adjust fixed window geometry */
@ -1126,15 +1137,19 @@ xinit(int cols, int rows)
| ButtonMotionMask | ButtonPressMask | ButtonReleaseMask; | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
xw.attrs.colormap = xw.cmap; xw.attrs.colormap = xw.cmap;
if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
parent = XRootWindow(xw.dpy, xw.scr);
xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t, xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
win.w, win.h, 0, xw.depth, InputOutput, win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
| CWEventMask | CWColormap, &xw.attrs); | CWEventMask | CWColormap, &xw.attrs);
memset(&gcvalues, 0, sizeof(gcvalues)); memset(&gcvalues, 0, sizeof(gcvalues));
gcvalues.graphics_exposures = False; gcvalues.graphics_exposures = False;
xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h, xw.depth); dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
dc.gc = XCreateGC(xw.dpy, xw.buf, GCGraphicsExposures, &gcvalues); &gcvalues);
xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
DefaultDepth(xw.dpy, xw.scr));
XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel); XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h); XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
@ -1145,7 +1160,10 @@ xinit(int cols, int rows)
xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap); xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
/* input methods */ /* input methods */
ximopen(xw.dpy); if (!ximopen(xw.dpy)) {
XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
ximinstantiate, NULL);
}
/* white cursor, black outline */ /* white cursor, black outline */
cursor = XCreateFontCursor(xw.dpy, mouseshape); cursor = XCreateFontCursor(xw.dpy, mouseshape);
@ -1211,7 +1229,7 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
mode = glyphs[i].mode; mode = glyphs[i].mode;
/* Skip dummy wide-character spacing. */ /* Skip dummy wide-character spacing. */
if (mode & ATTR_WDUMMY) if (mode == ATTR_WDUMMY)
continue; continue;
/* Determine font for glyph if different from previous glyph. */ /* Determine font for glyph if different from previous glyph. */
@ -1318,9 +1336,6 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
numspecs++; numspecs++;
} }
// Harfbuzz transformation for ligatures.
hbtransform(specs, glyphs, len, x, y);
return numspecs; return numspecs;
} }
@ -1511,8 +1526,9 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
/* draw the new one */ /* draw the new one */
if (IS_SET(MODE_FOCUSED)) { if (IS_SET(MODE_FOCUSED)) {
switch (win.cursor) { switch (win.cursor) {
case 7: /* st extension: snowman (U+2603) */ case 7: /* st extension */
g.u = 0x2603; g.u = 0x2603; /* snowman (U+2603) */
/* FALLTHROUGH */
case 0: /* Blinking Block */ case 0: /* Blinking Block */
case 1: /* Blinking Block (Default) */ case 1: /* Blinking Block (Default) */
case 2: /* Steady Block */ case 2: /* Steady Block */
@ -1626,11 +1642,13 @@ xfinishdraw(void)
void void
xximspot(int x, int y) xximspot(int x, int y)
{ {
XPoint spot = { borderpx + x * win.cw, borderpx + (y + 1) * win.ch }; if (xw.ime.xic == NULL)
XVaNestedList attr = XVaCreateNestedList(0, XNSpotLocation, &spot, NULL); return;
XSetICValues(xw.xic, XNPreeditAttributes, attr, NULL); xw.ime.spot.x = borderpx + x * win.cw;
XFree(attr); xw.ime.spot.y = borderpx + (y + 1) * win.ch;
XSetICValues(xw.ime.xic, XNPreeditAttributes, xw.ime.spotlist, NULL);
} }
void void
@ -1672,8 +1690,7 @@ xsetmode(int set, unsigned int flags)
int int
xsetcursor(int cursor) xsetcursor(int cursor)
{ {
DEFAULT(cursor, 1); if (!BETWEEN(cursor, 0, 7)) /* 7: st extension */
if (!BETWEEN(cursor, 0, 6))
return 1; return 1;
win.cursor = cursor; win.cursor = cursor;
return 0; return 0;
@ -1707,13 +1724,15 @@ focus(XEvent *ev)
return; return;
if (ev->type == FocusIn) { if (ev->type == FocusIn) {
XSetICFocus(xw.xic); if (xw.ime.xic)
XSetICFocus(xw.ime.xic);
win.mode |= MODE_FOCUSED; win.mode |= MODE_FOCUSED;
xseturgency(0); xseturgency(0);
if (IS_SET(MODE_FOCUS)) if (IS_SET(MODE_FOCUS))
ttywrite("\033[I", 3, 0); ttywrite("\033[I", 3, 0);
} else { } else {
XUnsetICFocus(xw.xic); if (xw.ime.xic)
XUnsetICFocus(xw.ime.xic);
win.mode &= ~MODE_FOCUSED; win.mode &= ~MODE_FOCUSED;
if (IS_SET(MODE_FOCUS)) if (IS_SET(MODE_FOCUS))
ttywrite("\033[O", 3, 0); ttywrite("\033[O", 3, 0);
@ -1768,7 +1787,7 @@ kpress(XEvent *ev)
{ {
XKeyEvent *e = &ev->xkey; XKeyEvent *e = &ev->xkey;
KeySym ksym; KeySym ksym;
char buf[32], *customkey; char buf[64], *customkey;
int len; int len;
Rune c; Rune c;
Status status; Status status;
@ -1777,7 +1796,10 @@ kpress(XEvent *ev)
if (IS_SET(MODE_KBDLOCK)) if (IS_SET(MODE_KBDLOCK))
return; return;
len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status); if (xw.ime.xic)
len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status);
else
len = XLookupString(e, buf, sizeof buf, &ksym, NULL);
/* 1. shortcuts */ /* 1. shortcuts */
for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) { for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
if (ksym == bp->keysym && match(bp->mod, e->state)) { if (ksym == bp->keysym && match(bp->mod, e->state)) {
@ -1845,10 +1867,9 @@ run(void)
XEvent ev; XEvent ev;
int w = win.w, h = win.h; int w = win.w, h = win.h;
fd_set rfd; fd_set rfd;
int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0; int xfd = XConnectionNumber(xw.dpy), ttyfd, xev, drawing;
int ttyfd; struct timespec seltv, *tv, now, lastblink, trigger;
struct timespec drawtimeout, *tv = NULL, now, last, lastblink; double timeout;
long deltatime;
/* Waiting for window mapping */ /* Waiting for window mapping */
do { do {
@ -1869,82 +1890,77 @@ run(void)
ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd); ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
cresize(w, h); cresize(w, h);
clock_gettime(CLOCK_MONOTONIC, &last); for (timeout = -1, drawing = 0, lastblink = (struct timespec){0};;) {
lastblink = last;
for (xev = actionfps;;) {
FD_ZERO(&rfd); FD_ZERO(&rfd);
FD_SET(ttyfd, &rfd); FD_SET(ttyfd, &rfd);
FD_SET(xfd, &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 (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
if (errno == EINTR) if (errno == EINTR)
continue; continue;
die("select failed: %s\n", strerror(errno)); 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); clock_gettime(CLOCK_MONOTONIC, &now);
drawtimeout.tv_sec = 0;
drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
tv = &drawtimeout;
dodraw = 0; if (FD_ISSET(ttyfd, &rfd))
if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) { ttyread();
tsetdirtattr(ATTR_BLINK);
win.mode ^= MODE_BLINK; xev = 0;
lastblink = now; while (XPending(xw.dpy)) {
dodraw = 1; xev = 1;
} XNextEvent(xw.dpy, &ev);
deltatime = TIMEDIFF(now, last); if (XFilterEvent(&ev, None))
if (deltatime > 1000 / (xev ? xfps : actionfps)) { continue;
dodraw = 1; if (handler[ev.type])
last = now; (handler[ev.type])(&ev);
} }
if (dodraw) { /*
while (XPending(xw.dpy)) { * To reduce flicker and tearing, when new content or event
XNextEvent(xw.dpy, &ev); * triggers drawing, we first wait a bit to ensure we got
if (XFilterEvent(&ev, None)) * everything, and if nothing new arrives - we draw.
continue; * We start with trying to wait minlatency ms. If more content
if (handler[ev.type]) * arrives sooner, we retry with shorter and shorter periods,
(handler[ev.type])(&ev); * 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 */
}
draw(); /* idle detected or maxlatency exhausted -> draw */
XFlush(xw.dpy); timeout = -1;
if (blinktimeout && tattrset(ATTR_BLINK)) {
if (xev && !FD_ISSET(xfd, &rfd)) timeout = blinktimeout - TIMEDIFF(now, lastblink);
xev--; if (timeout <= 0) {
if (!FD_ISSET(ttyfd, &rfd) && !FD_ISSET(xfd, &rfd)) { if (-timeout > blinktimeout) /* start visible */
if (blinkset) { win.mode |= MODE_BLINK;
if (TIMEDIFF(now, lastblink) \ win.mode ^= MODE_BLINK;
> blinktimeout) { tsetdirtattr(ATTR_BLINK);
drawtimeout.tv_nsec = 1000; lastblink = now;
} else { timeout = blinktimeout;
drawtimeout.tv_nsec = (1E6 * \
(blinktimeout - \
TIMEDIFF(now,
lastblink)));
}
drawtimeout.tv_sec = \
drawtimeout.tv_nsec / 1E9;
drawtimeout.tv_nsec %= (long)1E9;
} else {
tv = NULL;
}
} }
} }
draw();
XFlush(xw.dpy);
drawing = 0;
} }
} }
@ -1966,15 +1982,12 @@ main(int argc, char *argv[])
{ {
xw.l = xw.t = 0; xw.l = xw.t = 0;
xw.isfixed = False; xw.isfixed = False;
win.cursor = cursorshape; xsetcursor(cursorshape);
ARGBEGIN { ARGBEGIN {
case 'a': case 'a':
allowaltscreen = 0; allowaltscreen = 0;
break; break;
case 'A':
opt_alpha = EARGF(usage());
break;
case 'c': case 'c':
opt_class = EARGF(usage()); opt_class = EARGF(usage());
break; break;