#include <sys/wait.h>
#include <unistd.h>
#include <X11/Xlib.h>
+#include <X11/Xatom.h>
#include <X11/keysym.h>
#include <X11/Xutil.h>
#include <libutil.h>
#endif
+#define USAGE \
+ "st-" VERSION ", (c) 2010 st engineers\n" \
+ "usage: st [-t title] [-c class] [-e cmd] [-v]\n"
+
/* Arbitrary sizes */
#define ESC_TITLE_SIZ 256
#define ESC_BUF_SIZ 256
#define ESC_ARG_SIZ 16
#define DRAW_BUF_SIZ 1024
+#define UTF_SIZ 4
#define SERRNO strerror(errno)
#define MIN(a, b) ((a) < (b) ? (a) : (b))
CURSOR_SAVE, CURSOR_LOAD };
enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
-enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8 };
+enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8,
+ MODE_CRLF=16 };
enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
enum { SCREEN_UPDATE, SCREEN_REDRAW };
+enum { WIN_VISIBLE=1, WIN_REDRAW=2, WIN_FOCUSED=4 };
+
+#undef B0
+enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
typedef struct {
- char c; /* character code */
+ char c[UTF_SIZ]; /* character code */
char mode; /* attribute flags */
int fg; /* foreground */
int bg; /* background */
/* Purely graphic info */
typedef struct {
Display* dis;
+ Colormap cmap;
Window win;
Pixmap buf;
+ XIM xim;
+ XIC xic;
int scr;
int w; /* window width */
int h; /* window height */
int bufh; /* pixmap height */
int ch; /* char height */
int cw; /* char width */
- int hasfocus;
+ char state; /* focus, redraw, visible */
} XWindow;
typedef struct {
char s[ESC_BUF_SIZ];
} Key;
+typedef struct {
+ XFontSet fs;
+ short lbearing;
+ short rbearing;
+ int ascent;
+ int descent;
+} FontInfo;
+
/* Drawing Context */
typedef struct {
unsigned long col[256];
- XFontStruct* font;
- XFontStruct* bfont;
+ FontInfo font;
+ FontInfo bfont;
GC gc;
} DC;
+/* TODO: use better name for vars... */
typedef struct {
int mode;
int bx, by;
int ex, ey;
- int b[2], e[2];
+ struct {int x, y;} b, e;
char *clip;
} Selection;
static void tinsertblankline(int);
static void tmoveto(int, int);
static void tnew(int, int);
-static void tnewline(void);
+static void tnewline(int);
static void tputtab(void);
-static void tputc(char);
-static void tputs(char*, int);
+static void tputc(char*);
static void treset(void);
-static void tresize(int, int);
-static void tscrollup(int);
-static void tscrolldown(int);
+static int tresize(int, int);
+static void tscrollup(int, int);
+static void tscrolldown(int, int);
static void tsetattr(int*, int);
-static void tsetchar(char);
+static void tsetchar(char*);
static void tsetscroll(int, int);
static void tswapscreen(void);
static void ttyresize(int, int);
static void ttywrite(const char *, size_t);
-static void xdraws(char *, Glyph, int, int, int);
+static void xdraws(char *, Glyph, int, int, int, int);
static void xhints(void);
static void xclear(int, int, int, int);
static void xdrawcursor(void);
static void xinit(void);
static void xloadcols(void);
static void xseturgency(int);
+static void xsetsel(char*);
+static void xresize(int, int);
static void expose(XEvent *);
+static void visibility(XEvent *);
+static void unmap(XEvent *);
static char* kmap(KeySym);
static void kpress(XEvent *);
static void resize(XEvent *);
static void brelease(XEvent *);
static void bpress(XEvent *);
static void bmotion(XEvent *);
+static void selnotify(XEvent *);
+static void selrequest(XEvent *);
+
+static void selinit(void);
+static inline int selected(int, int);
+static void selcopy(void);
+static void selpaste(void);
+static int stou(char *, long *);
+static int utos(long *, char *);
+static int slen(char *);
+static int canstou(char *, int);
static void (*handler[LASTEvent])(XEvent *) = {
[KeyPress] = kpress,
- [Expose] = expose,
[ConfigureNotify] = resize,
+ [VisibilityNotify] = visibility,
+ [UnmapNotify] = unmap,
+ [Expose] = expose,
[FocusIn] = focus,
[FocusOut] = focus,
[MotionNotify] = bmotion,
[ButtonPress] = bpress,
[ButtonRelease] = brelease,
+ [SelectionNotify] = selnotify,
+ [SelectionRequest] = selrequest,
};
/* Globals */
static int cmdfd;
static pid_t pid;
static Selection sel;
+static char *opt_cmd = NULL;
+static char *opt_title = NULL;
+static char *opt_class = NULL;
+
+/* UTF-8 decode */
+static int stou(char *s, long *u) {
+ unsigned char c;
+ int i, n, rtn;
+
+ rtn = 1;
+ c = *s;
+ if(~c&B7) { /* 0xxxxxxx */
+ *u = c;
+ return rtn;
+ } else if ((c&(B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
+ *u = c&(B4|B3|B2|B1|B0);
+ n = 1;
+ } else if ((c&(B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
+ *u = c&(B3|B2|B1|B0);
+ n = 2;
+ } else if ((c&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
+ *u = c&(B2|B1|B0);
+ n = 3;
+ } else
+ goto invalid;
+ for (i=n,++s; i>0; --i,++rtn,++s) {
+ c = *s;
+ if ((c&(B7|B6)) != B7) /* 10xxxxxx */
+ goto invalid;
+ *u <<= 6;
+ *u |= c&(B5|B4|B3|B2|B1|B0);
+ }
+ if ((n == 1 && *u < 0x80) ||
+ (n == 2 && *u < 0x800) ||
+ (n == 3 && *u < 0x10000) ||
+ (*u >= 0xD800 && *u <= 0xDFFF))
+ goto invalid;
+ return rtn;
+invalid:
+ *u = 0xFFFD;
+ return rtn;
+}
-void
-selinit(void) {
+/* UTF-8 encode */
+static int utos(long *u, char *s) {
+ unsigned char *sp;
+ unsigned long uc;
+ int i, n;
+
+ sp = (unsigned char*) s;
+ uc = *u;
+ if (uc < 0x80) {
+ *sp = uc; /* 0xxxxxxx */
+ return 1;
+ } else if (*u < 0x800) {
+ *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
+ n = 1;
+ } else if (uc < 0x10000) {
+ *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
+ n = 2;
+ } else if (uc <= 0x10FFFF) {
+ *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
+ n = 3;
+ } else {
+ goto invalid;
+ }
+ for (i=n,++sp; i>0; --i,++sp)
+ *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
+ return n+1;
+invalid:
+ /* U+FFFD */
+ *s++ = '\xEF';
+ *s++ = '\xBF';
+ *s = '\xBD';
+ return 3;
+}
+
+/* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
+ UTF-8 otherwise return 0 */
+static int canstou(char *s, int b) {
+ unsigned char c = *s;
+ int n;
+
+ if (b < 1)
+ return 0;
+ else if (~c&B7)
+ return 1;
+ else if ((c&(B7|B6|B5)) == (B7|B6))
+ n = 1;
+ else if ((c&(B7|B6|B5|B4)) == (B7|B6|B5))
+ n = 2;
+ else if ((c&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4))
+ n = 3;
+ else
+ return 1;
+ for (--b,++s; n>0&&b>0; --n,--b,++s) {
+ c = *s;
+ if ((c&(B7|B6)) != B7)
+ break;
+ }
+ if (n > 0 && b == 0)
+ return 0;
+ else
+ return 1;
+}
+
+static int slen(char *s) {
+ unsigned char c = *s;
+
+ if (~c&B7)
+ return 1;
+ else if ((c&(B7|B6|B5)) == (B7|B6))
+ return 2;
+ else if ((c&(B7|B6|B5|B4)) == (B7|B6|B5))
+ return 3;
+ else
+ return 4;
+}
+
+static void selinit(void) {
sel.mode = 0;
sel.bx = -1;
sel.clip = NULL;
int ex = MAX(sel.bx, sel.ex);
return BETWEEN(x, bx, ex);
}
- return ((sel.b[1] < y&&y < sel.e[1]) || (y==sel.e[1] && x<=sel.e[0]))
- || (y==sel.b[1] && x>=sel.b[0] && (x<=sel.e[0] || sel.b[1]!=sel.e[1]));
+ return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
+ || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
}
static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
- if(b) *b = e->xbutton.state,
- *b=*b==4096?5:*b==2048?4:*b==1024?3:*b==512?2:*b==256?1:-1;
+ if(b)
+ *b = e->xbutton.button;
+
*x = e->xbutton.x/xw.cw;
*y = e->xbutton.y/xw.ch;
- sel.b[0] = sel.by < sel.ey ? sel.bx : sel.ex;
- sel.b[1] = MIN(sel.by, sel.ey);
- sel.e[0] = sel.by < sel.ey ? sel.ex : sel.bx;
- sel.e[1] = MAX(sel.by, sel.ey);
+ sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
+ sel.b.y = MIN(sel.by, sel.ey);
+ sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
+ sel.e.y = MAX(sel.by, sel.ey);
}
static void bpress(XEvent *e) {
sel.ey = sel.by = e->xbutton.y/xw.ch;
}
-static char *getseltext() {
+static void selcopy() {
char *str, *ptr;
- int ls, x, y, sz;
+ int ls, x, y, sz, sl;
+
if(sel.bx == -1)
- return NULL;
- sz = (term.col+1) * (sel.e[1]-sel.b[1]+1);
- ptr = str = malloc(sz);
- for(y = 0; y < term.row; y++) {
- for(x = 0; x < term.col; x++)
- if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y)))
- *ptr = term.line[y][x].c, ptr++;
- if(ls)
- *ptr = '\n', ptr++;
+ str = NULL;
+ else {
+ sz = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
+ ptr = str = malloc(sz);
+ for(y = 0; y < term.row; y++) {
+ for(x = 0; x < term.col; x++)
+ if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y))) {
+ sl = slen(term.line[y][x].c);
+ memcpy(ptr, term.line[y][x].c, sl);
+ ptr += sl;
+ }
+ if(ls)
+ *ptr = '\n', ptr++;
+ }
+ *ptr = 0;
}
- *ptr = 0;
- return str;
+ xsetsel(str);
}
-/* TODO: use X11 clipboard */
-static void selcopy(char *str) {
- free(sel.clip);
- sel.clip = str;
+static void selnotify(XEvent *e) {
+ unsigned long nitems;
+ unsigned long ofs, rem;
+ int format;
+ unsigned char *data;
+ Atom type;
+
+ ofs = 0;
+ do {
+ if(XGetWindowProperty(xw.dis, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
+ False, AnyPropertyType, &type, &format,
+ &nitems, &rem, &data)) {
+ fprintf(stderr, "Clipboard allocation failed\n");
+ return;
+ }
+ ttywrite((const char *) data, nitems * format / 8);
+ XFree(data);
+ /* number of 32-bit chunks returned */
+ ofs += nitems * format / 32;
+ } while(rem > 0);
}
static void selpaste() {
- if(sel.clip)
- ttywrite(sel.clip, strlen(sel.clip));
+ XConvertSelection(xw.dis, XA_PRIMARY, XA_STRING, XA_PRIMARY, xw.win, CurrentTime);
+}
+
+static void selrequest(XEvent *e)
+{
+ XSelectionRequestEvent *xsre;
+ XSelectionEvent xev;
+ Atom xa_targets;
+
+ xsre = (XSelectionRequestEvent *) e;
+ xev.type = SelectionNotify;
+ xev.requestor = xsre->requestor;
+ xev.selection = xsre->selection;
+ xev.target = xsre->target;
+ xev.time = xsre->time;
+ /* reject */
+ xev.property = None;
+
+ xa_targets = XInternAtom(xw.dis, "TARGETS", 0);
+ if(xsre->target == xa_targets) {
+ /* respond with the supported type */
+ Atom string = XA_STRING;
+ XChangeProperty(xsre->display, xsre->requestor, xsre->property,
+ XA_ATOM, 32, PropModeReplace,
+ (unsigned char *) &string, 1);
+ xev.property = xsre->property;
+ } else if(xsre->target == XA_STRING) {
+ XChangeProperty(xsre->display, xsre->requestor, xsre->property,
+ xsre->target, 8, PropModeReplace,
+ (unsigned char *) sel.clip, strlen(sel.clip));
+ xev.property = xsre->property;
+ }
+
+ /* all done, send a notification to the listener */
+ if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
+ fprintf(stderr, "Error sending SelectionNotify event\n");
+}
+
+static void xsetsel(char *str) {
+ /* register the selection for both the clipboard and the primary */
+ Atom clipboard;
+
+ free(sel.clip);
+ sel.clip = str;
+
+ XSetSelectionOwner(xw.dis, XA_PRIMARY, xw.win, CurrentTime);
+
+ clipboard = XInternAtom(xw.dis, "CLIPBOARD", 0);
+ XSetSelectionOwner(xw.dis, clipboard, xw.win, CurrentTime);
+
+ XFlush(xw.dis);
}
/* TODO: doubleclick to select word */
selpaste();
} else {
if(b==1)
- selcopy(getseltext());
+ selcopy();
}
draw(1);
}
static void bmotion(XEvent *e) {
if (sel.mode) {
getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
- draw(1);
+ // draw(1);
}
}
void
execsh(void) {
- char *args[3] = {getenv("SHELL"), "-i", NULL};
- DEFAULT(args[0], SHELL); /* if getenv() failed */
- putenv("TERM=" TNAME);
+ char *args[] = {getenv("SHELL"), "-i", NULL};
+ if(opt_cmd)
+ args[0] = opt_cmd, args[1] = NULL;
+ else
+ DEFAULT(args[0], SHELL);
+ putenv("TERM="TNAME);
execvp(args[0], args);
}
void
ttyread(void) {
- char buf[BUFSIZ] = {0};
- int ret;
+ char buf[BUFSIZ], *ptr;
+ char s[UTF_SIZ];
+ int ret, br;
+ static int buflen = 0;
+ long u;
- if((ret = read(cmdfd, buf, BUFSIZ)) < 0)
+ if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
die("Couldn't read from shell: %s\n", SERRNO);
- else
- tputs(buf, ret);
+ else {
+ buflen += ret;
+ for(ptr=buf; buflen>=UTF_SIZ||canstou(ptr,buflen); buflen-=br) {
+ br = stou(ptr, &u);
+ utos(&u, s);
+ tputc(s);
+ ptr += br;
+ }
+ memcpy(buf, ptr, buflen);
+ }
}
void
}
void
-tscrolldown (int n) {
+tscrolldown(int orig, int n) {
int i;
Line temp;
- LIMIT(n, 0, term.bot-term.top+1);
+ LIMIT(n, 0, term.bot-orig+1);
- for(i = 0; i < n; i++)
- memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
+ tclearregion(0, term.bot-n+1, term.col-1, term.bot);
- for(i = term.bot; i >= term.top+n; i--) {
+ for(i = term.bot; i >= orig+n; i--) {
temp = term.line[i];
term.line[i] = term.line[i-n];
term.line[i-n] = temp;
}
void
-tscrollup (int n) {
+tscrollup(int orig, int n) {
int i;
Line temp;
- LIMIT(n, 0, term.bot-term.top+1);
+ LIMIT(n, 0, term.bot-orig+1);
- for(i = 0; i < n; i++)
- memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
+ tclearregion(0, orig, term.col-1, orig+n-1);
- for(i = term.top; i <= term.bot-n; i++) {
+ for(i = orig; i <= term.bot-n; i++) {
temp = term.line[i];
term.line[i] = term.line[i+n];
term.line[i+n] = temp;
}
void
-tnewline(void) {
- int y = term.c.y + 1;
- if(y > term.bot)
- tscrollup(1), y = term.bot;
- tmoveto(0, y);
+tnewline(int first_col) {
+ int y = term.c.y;
+ if(y == term.bot)
+ tscrollup(term.top, 1);
+ else
+ y++;
+ tmoveto(first_col ? 0 : term.c.x, y);
}
void
}
void
-tsetchar(char c) {
+tsetchar(char *c) {
term.line[term.c.y][term.c.x] = term.c.attr;
- term.line[term.c.y][term.c.x].c = c;
+ memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
term.line[term.c.y][term.c.x].state |= GLYPH_SET;
}
void
tclearregion(int x1, int y1, int x2, int y2) {
- int y, temp;
+ int x, y, temp;
if(x1 > x2)
temp = x1, x1 = x2, x2 = temp;
LIMIT(y2, 0, term.row-1);
for(y = y1; y <= y2; y++)
- memset(&term.line[y][x1], 0, sizeof(Glyph)*(x2-x1+1));
+ for(x = x1; x <= x2; x++)
+ term.line[y][x].state = 0;
}
void
void
tinsertblankline(int n) {
- int i;
- Line blank;
- int bot = term.bot;
-
- if(term.c.y > term.bot)
- bot = term.row - 1;
- else if(term.c.y < term.top)
- bot = term.top - 1;
- if(term.c.y + n >= bot) {
- tclearregion(0, term.c.y, term.col-1, bot);
+ if(term.c.y < term.top || term.c.y > term.bot)
return;
- }
- for(i = bot; i >= term.c.y+n; i--) {
- /* swap deleted line <-> blanked line */
- blank = term.line[i];
- term.line[i] = term.line[i-n];
- term.line[i-n] = blank;
- /* blank it */
- memset(blank, 0, term.col * sizeof(Glyph));
- }
+
+ tscrolldown(term.c.y, n);
}
void
tdeleteline(int n) {
- int i;
- Line blank;
- int bot = term.bot;
-
- if(term.c.y > term.bot)
- bot = term.row - 1;
- else if(term.c.y < term.top)
- bot = term.top - 1;
- if(term.c.y + n >= bot) {
- tclearregion(0, term.c.y, term.col-1, bot);
+ if(term.c.y < term.top || term.c.y > term.bot)
return;
- }
- for(i = term.c.y; i <= bot-n; i++) {
- /* swap deleted line <-> blanked line */
- blank = term.line[i];
- term.line[i] = term.line[i+n];
- term.line[i+n] = blank;
- /* blank it */
- memset(blank, 0, term.col * sizeof(Glyph));
- }
+
+ tscrollup(term.c.y, n);
}
void
else if(BETWEEN(attr[i], 100, 107))
term.c.attr.fg = attr[i] - 100 + 8;
else
- fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
+ fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]), csidump();
+
break;
}
}
case 'J': /* ED -- Clear screen */
switch(escseq.arg[0]) {
case 0: /* below */
- tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
+ tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
+ if(term.c.y < term.row-1)
+ tclearregion(0, term.c.y+1, term.col-1, term.row-1);
break;
case 1: /* above */
- tclearregion(0, 0, term.c.x, term.c.y);
+ if(term.c.y > 1)
+ tclearregion(0, 0, term.col-1, term.c.y-1);
+ tclearregion(0, term.c.y, term.c.x, term.c.y);
break;
case 2: /* all */
tclearregion(0, 0, term.col-1, term.row-1);
break;
case 'S': /* SU -- Scroll <n> line up */
DEFAULT(escseq.arg[0], 1);
- tscrollup(escseq.arg[0]);
+ tscrollup(term.top, escseq.arg[0]);
break;
case 'T': /* SD -- Scroll <n> line down */
DEFAULT(escseq.arg[0], 1);
- tscrolldown(escseq.arg[0]);
+ tscrolldown(term.top, escseq.arg[0]);
break;
case 'L': /* IL -- Insert <n> blank lines */
DEFAULT(escseq.arg[0], 1);
case 1:
term.mode &= ~MODE_APPKEYPAD;
break;
+ case 5: /* TODO: DECSCNM -- Remove reverse video */
+ break;
case 7:
term.mode &= ~MODE_WRAP;
break;
case 12: /* att610 -- Stop blinking cursor (IGNORED) */
break;
+ case 20:
+ term.mode &= ~MODE_CRLF;
+ break;
case 25:
term.c.state |= CURSOR_HIDE;
break;
case 1:
term.mode |= MODE_APPKEYPAD;
break;
+ case 5: /* DECSCNM -- Reverve video */
+ /* TODO: set REVERSE on the whole screen (f) */
+ break;
case 7:
term.mode |= MODE_WRAP;
break;
- case 12: /* att610 -- Start blinking cursor (IGNORED) */
+ case 20:
+ term.mode |= MODE_CRLF;
break;
+ case 12: /* att610 -- Start blinking cursor (IGNORED) */
+ /* fallthrough for xterm cvvis = CSI [ ? 12 ; 25 h */
+ if(escseq.narg > 1 && escseq.arg[1] != 25)
+ break;
case 25:
term.c.state &= ~CURSOR_HIDE;
break;
}
void
-tputc(char c) {
+tputc(char *c) {
+ char ascii = *c;
if(term.esc & ESC_START) {
if(term.esc & ESC_CSI) {
- escseq.buf[escseq.len++] = c;
- if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
+ escseq.buf[escseq.len++] = ascii;
+ if(BETWEEN(ascii, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
term.esc = 0;
csiparse(), csihandle();
}
- } else if(term.esc & ESC_OSC) {
- if(c == ';') {
+ /* TODO: handle other OSC */
+ } else if(term.esc & ESC_OSC) {
+ if(ascii == ';') {
term.titlelen = 0;
term.esc = ESC_START | ESC_TITLE;
}
} else if(term.esc & ESC_TITLE) {
- if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
+ if(ascii == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
term.esc = 0;
term.title[term.titlelen] = '\0';
XStoreName(xw.dis, xw.win, term.title);
} else {
- term.title[term.titlelen++] = c;
+ term.title[term.titlelen++] = ascii;
}
} else if(term.esc & ESC_ALTCHARSET) {
- switch(c) {
+ switch(ascii) {
case '0': /* Line drawing crap */
term.c.attr.mode |= ATTR_GFX;
break;
term.c.attr.mode &= ~ATTR_GFX;
break;
default:
- printf("esc unhandled charset: ESC ( %c\n", c);
+ printf("esc unhandled charset: ESC ( %c\n", ascii);
}
term.esc = 0;
} else {
- switch(c) {
+ switch(ascii) {
case '[':
term.esc |= ESC_CSI;
break;
break;
case 'D': /* IND -- Linefeed */
if(term.c.y == term.bot)
- tscrollup(1);
+ tscrollup(term.top, 1);
else
tmoveto(term.c.x, term.c.y+1);
term.esc = 0;
break;
case 'E': /* NEL -- Next line */
- tnewline();
+ tnewline(1); /* always go to first col */
term.esc = 0;
break;
case 'M': /* RI -- Reverse index */
if(term.c.y == term.top)
- tscrolldown(1);
+ tscrolldown(term.top, 1);
else
tmoveto(term.c.x, term.c.y-1);
term.esc = 0;
term.esc = 0;
break;
default:
- fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
+ fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
+ (unsigned char) ascii, isprint(ascii)?ascii:'.');
term.esc = 0;
}
}
} else {
- switch(c) {
+ switch(ascii) {
case '\t':
tputtab();
break;
case '\r':
tmoveto(0, term.c.y);
break;
+ case '\f':
+ case '\v':
case '\n':
- tnewline();
+ /* go to first col if the mode is set */
+ tnewline(IS_SET(MODE_CRLF));
break;
case '\a':
- if(!xw.hasfocus)
+ if(!(xw.state & WIN_FOCUSED))
xseturgency(1);
break;
case '\033':
break;
default:
if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
- tnewline();
+ tnewline(1); /* always go to first col */
tsetchar(c);
if(term.c.x+1 < term.col)
tmoveto(term.c.x+1, term.c.y);
}
}
-void
-tputs(char *s, int len) {
- for(; len > 0; len--)
- tputc(*s++);
-}
-
-void
+int
tresize(int col, int row) {
- int i;
+ int i, x;
int minrow = MIN(row, term.row);
int mincol = MIN(col, term.col);
+ int slide = term.c.y - row + 1;
if(col < 1 || row < 1)
- return;
-
- /* free uneeded rows */
- for(i = row; i < term.row; i++) {
+ return 0;
+
+ /* free unneeded rows */
+ i = 0;
+ if(slide > 0) {
+ /* slide screen to keep cursor where we expect it -
+ * tscrollup would work here, but we can optimize to
+ * memmove because we're freeing the earlier lines */
+ for(/* i = 0 */; i < slide; i++) {
+ free(term.line[i]);
+ free(term.alt[i]);
+ }
+ memmove(term.line, term.line + slide, row * sizeof(Line));
+ memmove(term.alt, term.alt + slide, row * sizeof(Line));
+ }
+ for(i += row; i < term.row; i++) {
free(term.line[i]);
free(term.alt[i]);
}
for(i = 0; i < minrow; i++) {
term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph));
- memset(term.line[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
- memset(term.alt[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
+ for(x = mincol; x < col; x++) {
+ term.line[i][x].state = 0;
+ term.alt[i][x].state = 0;
+ }
}
/* allocate any new rows */
tmoveto(term.c.x, term.c.y);
/* reset scrolling region */
tsetscroll(0, row-1);
+ return (slide > 0);
+}
+
+void
+xresize(int col, int row) {
+ Pixmap newbuf;
+ int oldw, oldh;
+
+ oldw = xw.bufw;
+ oldh = xw.bufh;
+ xw.bufw = MAX(1, col * xw.cw);
+ xw.bufh = MAX(1, row * xw.ch);
+ newbuf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
+ XCopyArea(xw.dis, xw.buf, newbuf, dc.gc, 0, 0, xw.bufw, xw.bufh, 0, 0);
+ XFreePixmap(xw.dis, xw.buf);
+ XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
+ if(xw.bufw > oldw)
+ XFillRectangle(xw.dis, newbuf, dc.gc, oldw, 0,
+ xw.bufw-oldw, MIN(xw.bufh, oldh));
+ else if(xw.bufw < oldw && (BORDER > 0 || xw.w > xw.bufw))
+ XClearArea(xw.dis, xw.win, BORDER+xw.bufw, BORDER,
+ xw.w-xw.bufh-BORDER, BORDER+MIN(xw.bufh, oldh),
+ False);
+ if(xw.bufh > oldh)
+ XFillRectangle(xw.dis, newbuf, dc.gc, 0, oldh,
+ xw.bufw, xw.bufh-oldh);
+ else if(xw.bufh < oldh && (BORDER > 0 || xw.h > xw.bufh))
+ XClearArea(xw.dis, xw.win, BORDER, BORDER+xw.bufh,
+ xw.w-2*BORDER, xw.h-xw.bufh-BORDER,
+ False);
+ xw.buf = newbuf;
}
void
xloadcols(void) {
int i, r, g, b;
XColor color;
- Colormap cmap = DefaultColormap(xw.dis, xw.scr);
unsigned long white = WhitePixel(xw.dis, xw.scr);
for(i = 0; i < 16; i++) {
- if (!XAllocNamedColor(xw.dis, cmap, colorname[i], &color, &color)) {
+ if (!XAllocNamedColor(xw.dis, xw.cmap, colorname[i], &color, &color)) {
dc.col[i] = white;
fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
} else
color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
- if (!XAllocColor(xw.dis, cmap, &color)) {
+ if (!XAllocColor(xw.dis, xw.cmap, &color)) {
dc.col[i] = white;
fprintf(stderr, "Could not allocate color %d\n", i);
} else
for(r = 0; r < 24; r++, i++) {
color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
- if (!XAllocColor(xw.dis, cmap, &color)) {
+ if (!XAllocColor(xw.dis, xw.cmap, &color)) {
dc.col[i] = white;
fprintf(stderr, "Could not allocate color %d\n", i);
} else
void
xhints(void)
{
- XClassHint class = {TNAME, TNAME};
+ XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
XWMHints wm = {.flags = InputHint, .input = 1};
XSizeHints size = {
.flags = PSize | PResizeInc | PBaseSize,
}
void
+xsetfontinfo(FontInfo *fi)
+{
+ XFontStruct **xfonts;
+ int fnum;
+ int i;
+ char **fontnames;
+
+ fi->lbearing = 0;
+ fi->rbearing = 0;
+ fi->ascent = 0;
+ fi->descent = 0;
+ fnum = XFontsOfFontSet(fi->fs, &xfonts, &fontnames);
+ for(i=0; i<fnum; i++,xfonts++,fontnames++) {
+ puts(*fontnames);
+ if(fi->ascent < (*xfonts)->ascent)
+ fi->ascent = (*xfonts)->ascent;
+ if(fi->descent < (*xfonts)->descent)
+ fi->descent = (*xfonts)->descent;
+ if(fi->rbearing < (*xfonts)->max_bounds.rbearing)
+ fi->rbearing = (*xfonts)->max_bounds.rbearing;
+ if(fi->lbearing < (*xfonts)->min_bounds.lbearing)
+ fi->lbearing = (*xfonts)->min_bounds.lbearing;
+ }
+}
+
+void
xinit(void) {
+ XSetWindowAttributes attrs;
+ char **mc;
+ char *ds;
+ int nmc;
+
if(!(xw.dis = XOpenDisplay(NULL)))
die("Can't open display\n");
xw.scr = XDefaultScreen(xw.dis);
/* font */
- if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT)))
- die("Can't load font %s\n", dc.font ? BOLDFONT : FONT);
+ if ((dc.font.fs = XCreateFontSet(xw.dis, FONT, &mc, &nmc, &ds)) == NULL ||
+ (dc.bfont.fs = XCreateFontSet(xw.dis, BOLDFONT, &mc, &nmc, &ds)) == NULL)
+ die("Can't load font %s\n", dc.font.fs ? BOLDFONT : FONT);
+ xsetfontinfo(&dc.font);
+ xsetfontinfo(&dc.bfont);
/* XXX: Assuming same size for bold font */
- xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
- xw.ch = dc.font->ascent + dc.font->descent;
+ xw.cw = dc.font.rbearing - dc.font.lbearing;
+ xw.ch = dc.font.ascent + dc.font.descent;
/* colors */
+ xw.cmap = XDefaultColormap(xw.dis, xw.scr);
xloadcols();
- /* windows */
- xw.h = term.row * xw.ch + 2*BORDER;
- xw.w = term.col * xw.cw + 2*BORDER;
- xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
- xw.w, xw.h, 0,
- dc.col[DefaultBG],
- dc.col[DefaultBG]);
- xw.bufw = xw.w - 2*BORDER;
- xw.bufh = xw.h - 2*BORDER;
+ /* window - default size */
+ xw.bufh = 24 * xw.ch;
+ xw.bufw = 80 * xw.cw;
+ xw.h = xw.bufh + 2*BORDER;
+ xw.w = xw.bufw + 2*BORDER;
+
+ attrs.background_pixel = dc.col[DefaultBG];
+ attrs.border_pixel = dc.col[DefaultBG];
+ attrs.bit_gravity = NorthWestGravity;
+ attrs.event_mask = FocusChangeMask | KeyPressMask
+ | ExposureMask | VisibilityChangeMask | StructureNotifyMask
+ | PointerMotionMask | ButtonPressMask | ButtonReleaseMask;
+ attrs.colormap = xw.cmap;
+
+ xw.win = XCreateWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
+ xw.w, xw.h, 0, XDefaultDepth(xw.dis, xw.scr), InputOutput,
+ XDefaultVisual(xw.dis, xw.scr),
+ CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
+ | CWColormap,
+ &attrs);
xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
+
+
+ /* input methods */
+ xw.xim = XOpenIM(xw.dis, NULL, NULL, NULL);
+ xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
+ | XIMStatusNothing, XNClientWindow, xw.win,
+ XNFocusWindow, xw.win, NULL);
/* gc */
dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
- /* event mask */
- XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask
- | StructureNotifyMask | FocusChangeMask | PointerMotionMask
- | ButtonPressMask | ButtonReleaseMask);
-
XMapWindow(xw.dis, xw.win);
xhints();
- XStoreName(xw.dis, xw.win, "st");
+ XStoreName(xw.dis, xw.win, opt_title ? opt_title : "st");
XSync(xw.dis, 0);
}
void
-xdraws(char *s, Glyph base, int x, int y, int len) {
+xdraws(char *s, Glyph base, int x, int y, int cl, int sl) {
unsigned long xfg, xbg;
- int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;
+ int winx = x*xw.cw, winy = y*xw.ch + dc.font.ascent, width = cl*xw.cw;
int i;
if(base.mode & ATTR_REVERSE)
XSetBackground(xw.dis, dc.gc, xbg);
XSetForeground(xw.dis, dc.gc, xfg);
-
+
if(base.mode & ATTR_GFX)
- for(i = 0; i < len; i++)
- s[i] = gfx[(int)s[i]];
+ for(i = 0; i < cl; i++) {
+ char c = gfx[(unsigned int)s[i] % 256];
+ if(c)
+ s[i] = c;
+ else if(s[i] > 0x5f)
+ s[i] -= 0x5f;
+ }
- XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
- XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
+ XmbDrawImageString(xw.dis, xw.buf, base.mode & ATTR_BOLD ? dc.bfont.fs : dc.font.fs,
+ dc.gc, winx, winy, s, sl);
if(base.mode & ATTR_UNDERLINE)
XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
xdrawcursor(void) {
static int oldx = 0;
static int oldy = 0;
- Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};
+ int sl;
+ Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
LIMIT(oldx, 0, term.col-1);
LIMIT(oldy, 0, term.row-1);
if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
- g.c = term.line[term.c.y][term.c.x].c;
-
+ memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
+
/* remove the old cursor */
- if(term.line[oldy][oldx].state & GLYPH_SET)
- xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1);
- else
+ if(term.line[oldy][oldx].state & GLYPH_SET) {
+ sl = slen(term.line[oldy][oldx].c);
+ xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
+ } else
xclear(oldx, oldy, oldx, oldy);
/* draw the new one */
- if(!(term.c.state & CURSOR_HIDE) && xw.hasfocus) {
- xdraws(&g.c, g, term.c.x, term.c.y, 1);
+ if(!(term.c.state & CURSOR_HIDE) && (xw.state & WIN_FOCUSED)) {
+ sl = slen(g.c);
+ xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
oldx = term.c.x, oldy = term.c.y;
}
}
/* basic drawing routines */
void
xdrawc(int x, int y, Glyph g) {
+ int sl = slen(g.c);
XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
- XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
- XDrawImageString(xw.dis, xw.buf, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
+ XmbDrawImageString(xw.dis, xw.buf, g.mode&ATTR_BOLD?dc.bfont.fs:dc.font.fs,
+ dc.gc, r.x, r.y+dc.font.ascent, g.c, sl);
}
void
/* optimized drawing routine */
void
draw(int redraw_all) {
- int i, x, y, ox;
+ int ic, ib, x, y, ox, sl;
Glyph base, new;
char buf[DRAW_BUF_SIZ];
- XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
- XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.bufw, xw.bufh);
+ if(!(xw.state & WIN_VISIBLE))
+ return;
+
+ xclear(0, 0, term.col-1, term.row-1);
for(y = 0; y < term.row; y++) {
base = term.line[y][0];
- i = ox = 0;
+ ic = ib = ox = 0;
for(x = 0; x < term.col; x++) {
new = term.line[y][x];
- if(sel.bx!=-1 && new.c && selected(x, y))
+ if(sel.bx!=-1 && *(new.c) && selected(x, y))
new.mode ^= ATTR_REVERSE;
- if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
- i >= DRAW_BUF_SIZ)) {
- xdraws(buf, base, ox, y, i);
- i = 0;
+ if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
+ ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
+ xdraws(buf, base, ox, y, ic, ib);
+ ic = ib = 0;
}
if(new.state & GLYPH_SET) {
- if(i == 0) {
+ if(ib == 0) {
ox = x;
base = new;
}
- buf[i++] = new.c;
+ sl = slen(new.c);
+ memcpy(buf+ib, new.c, sl);
+ ib += sl;
+ ++ic;
}
}
- if(i > 0)
- xdraws(buf, base, ox, y, i);
+ if(ib > 0)
+ xdraws(buf, base, ox, y, ic, ib);
}
xdrawcursor();
XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
- XFlush(xw.dis);
}
#endif
void
expose(XEvent *ev) {
- draw(SCREEN_REDRAW);
+ XExposeEvent *e = &ev->xexpose;
+ if(xw.state & WIN_REDRAW) {
+ if(!e->count) {
+ xw.state &= ~WIN_REDRAW;
+ draw(SCREEN_REDRAW);
+ }
+ } else
+ XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, e->x-BORDER, e->y-BORDER,
+ e->width, e->height, e->x, e->y);
+}
+
+void
+visibility(XEvent *ev) {
+ XVisibilityEvent *e = &ev->xvisibility;
+ if(e->state == VisibilityFullyObscured)
+ xw.state &= ~WIN_VISIBLE;
+ else if(!(xw.state & WIN_VISIBLE))
+ /* need a full redraw for next Expose, not just a buf copy */
+ xw.state |= WIN_VISIBLE | WIN_REDRAW;
+}
+
+void
+unmap(XEvent *ev) {
+ xw.state &= ~WIN_VISIBLE;
}
void
void
focus(XEvent *ev) {
- if((xw.hasfocus = ev->type == FocusIn))
+ if(ev->type == FocusIn) {
+ xw.state |= WIN_FOCUSED;
xseturgency(0);
+ } else
+ xw.state &= ~WIN_FOCUSED;
draw(SCREEN_UPDATE);
}
int len;
int meta;
int shift;
+ Status status;
meta = e->state & Mod1Mask;
shift = e->state & ShiftMask;
- len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
-
+ len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
+
+ /* 1. custom keys from config.h */
if((customkey = kmap(ksym)))
ttywrite(customkey, strlen(customkey));
- else if(len > 0) {
- buf[sizeof(buf)-1] = '\0';
- if(meta && len == 1)
- ttywrite("\033", 1);
- ttywrite(buf, len);
- } else
+ /* 2. hardcoded (overrides X lookup) */
+ else
switch(ksym) {
case XK_Up:
case XK_Down:
break;
case XK_Insert:
if(shift)
- selpaste(), draw(1);
+ selpaste();
+ break;
+ case XK_Return:
+ if(IS_SET(MODE_CRLF))
+ ttywrite("\r\n", 2);
+ else
+ ttywrite("\r", 1);
break;
+ /* 3. X lookup */
default:
- fprintf(stderr, "errkey: %d\n", (int)ksym);
+ if(len > 0) {
+ buf[sizeof(buf)-1] = '\0';
+ if(meta && len == 1)
+ ttywrite("\033", 1);
+ ttywrite(buf, len);
+ } else /* 4. nothing to send */
+ fprintf(stderr, "errkey: %d\n", (int)ksym);
break;
}
}
xw.w = e->xconfigure.width;
xw.h = e->xconfigure.height;
- xw.bufw = xw.w - 2*BORDER;
- xw.bufh = xw.h - 2*BORDER;
- col = xw.bufw / xw.cw;
- row = xw.bufh / xw.ch;
- tresize(col, row);
+ col = (xw.w - 2*BORDER) / xw.cw;
+ row = (xw.h - 2*BORDER) / xw.ch;
+ if(col == term.col && row == term.row)
+ return;
+ if(tresize(col, row))
+ draw(SCREEN_REDRAW);
ttyresize(col, row);
- xw.bufh = MAX(1, xw.bufh);
- xw.bufw = MAX(1, xw.bufw);
- XFreePixmap(xw.dis, xw.buf);
- xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
- draw(SCREEN_REDRAW);
+ xresize(col, row);
}
void
}
while(XPending(xw.dis)) {
XNextEvent(xw.dis, &ev);
+ if (XFilterEvent(&ev, xw.win))
+ continue;
if(handler[ev.type])
(handler[ev.type])(&ev);
}
int
main(int argc, char *argv[]) {
- if(argc == 2 && !strncmp("-v", argv[1], 3))
- die("st-" VERSION ", (c) 2010 st engineers\n");
- else if(argc != 1)
- die("usage: st [-v]\n");
+ int i;
+
+ for(i = 1; i < argc; i++) {
+ switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
+ case 't':
+ if(++i < argc) opt_title = argv[i];
+ break;
+ case 'c':
+ if(++i < argc) opt_class = argv[i];
+ break;
+ case 'e':
+ if(++i < argc) opt_cmd = argv[i];
+ break;
+ case 'v':
+ default:
+ die(USAGE);
+ }
+ }
setlocale(LC_CTYPE, "");
tnew(80, 24);
ttynew();
Got questions, comments, patches, etc.? Contact Jason Woofenden