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1099 lines
22 KiB
1099 lines
22 KiB
/* See LICENSE for licence details. */
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#define _XOPEN_SOURCE
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <locale.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <sys/select.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <X11/Xlib.h>
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#include <X11/keysym.h>
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#include <X11/Xutil.h>
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#define TNAME "st"
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/* Arbitrary sizes */
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#define ESCSIZ 256
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#define ESCARG 16
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#define SERRNO strerror(errno)
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#define MAX(a, b) ((a) < (b) ? (b) : (a))
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#define LEN(a) (sizeof(a) / sizeof(a[0]))
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#define DEFAULT(a, b) (a) = (a) ? (a) : (b)
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#define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
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#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
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/* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
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enum { ATnone=0 , ATreverse=1 , ATunderline=2, ATbold=4 };
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enum { CSup, CSdown, CSright, CSleft, CShide, CSdraw, CSwrap, CSsave, CSload };
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enum { CRset=1, CRupdate=2 };
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enum { TMwrap=1, TMinsert=2 };
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enum { SCupdate, SCredraw };
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#include "config.h"
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typedef int Color;
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typedef struct {
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char c; /* character code */
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char mode; /* attribute flags */
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Color fg; /* foreground */
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Color bg; /* background */
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char state; /* state flag */
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} Glyph;
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typedef Glyph* Line;
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typedef struct {
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Glyph attr; /* current char attributes */
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char hidden;
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int x;
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int y;
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} TCursor;
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/* Escape sequence structs */
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/* ESC <pre> [[ [<priv>] <arg> [;]] <mode>] */
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typedef struct {
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char buf[ESCSIZ+1]; /* raw string */
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int len; /* raw string length */
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char pre;
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char priv;
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int arg[ESCARG+1];
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int narg; /* nb of args */
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char mode;
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} Escseq;
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/* Internal representation of the screen */
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typedef struct {
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int row; /* nb row */
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int col; /* nb col */
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Line* line; /* screen */
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TCursor c; /* cursor */
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int top; /* top scroll limit */
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int bot; /* bottom scroll limit */
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int mode; /* terminal mode */
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} Term;
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/* Purely graphic info */
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typedef struct {
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Display* dis;
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Window win;
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int scr;
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int w; /* window width */
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int h; /* window height */
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int ch; /* char height */
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int cw; /* char width */
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} XWindow;
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/* Drawing Context */
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typedef struct {
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unsigned long col[LEN(colorname)];
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XFontStruct* font;
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GC gc;
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} DC;
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void die(const char *errstr, ...);
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void draw(int);
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void execsh(void);
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void sigchld(int);
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char* kmap(KeySym);
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void kpress(XKeyEvent *);
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void resize(XEvent *);
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void run(void);
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int escaddc(char);
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int escfinal(char);
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void escdump(void);
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void eschandle(void);
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void escparse(void);
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void escreset(void);
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void tclearregion(int, int, int, int);
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void tcpos(int);
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void tcursor(int);
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void tdeletechar(int);
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void tdeleteline(int);
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void tdump(void);
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void tinsertblank(int);
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void tinsertblankline(int);
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void tmoveto(int, int);
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void tnew(int, int);
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void tnewline(void);
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void tputc(char);
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void tputs(char*, int);
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void tresize(int, int);
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void tscroll(void);
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void tsetattr(int*, int);
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void tsetchar(char);
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void tsetscroll(int, int);
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void ttynew(void);
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void ttyread(void);
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void ttyresize(int, int);
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void ttywrite(char *, size_t);
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unsigned long xgetcol(const char *);
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void xclear(int, int, int, int);
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void xcursor(int);
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void xdrawc(int, int, Glyph);
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void xinit(void);
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void xscroll(void);
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/* Globals */
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DC dc;
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XWindow xw;
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Term term;
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Escseq escseq;
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int cmdfd;
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pid_t pid;
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int running;
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void
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die(const char *errstr, ...) {
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va_list ap;
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va_start(ap, errstr);
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vfprintf(stderr, errstr, ap);
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va_end(ap);
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exit(EXIT_FAILURE);
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}
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void
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execsh(void) {
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char *args[3] = {SHELL, "-i", NULL};
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putenv("TERM=" TNAME);
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execvp(SHELL, args);
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}
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void
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xbell(void) { /* visual bell */
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XRectangle r = { 0, 0, xw.w, xw.h };
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XSetForeground(xw.dis, dc.gc, dc.col[BellCol]);
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XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
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/* usleep(30000); */
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draw(SCredraw);
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}
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void
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sigchld(int a) {
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int stat = 0;
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if(waitpid(pid, &stat, 0) < 0)
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die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
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if(WIFEXITED(stat))
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exit(WEXITSTATUS(stat));
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else
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exit(EXIT_FAILURE);
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}
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void
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ttynew(void) {
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int m, s;
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char *pts;
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if((m = posix_openpt(O_RDWR | O_NOCTTY)) < 0)
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die("openpt failed: %s\n", SERRNO);
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if(grantpt(m) < 0)
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die("grandpt failed: %s\n", SERRNO);
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if(unlockpt(m) < 0)
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die("unlockpt failed: %s\n", SERRNO);
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if(!(pts = ptsname(m)))
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die("ptsname failed: %s\n", SERRNO);
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if((s = open(pts, O_RDWR | O_NOCTTY)) < 0)
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die("Couldn't open slave: %s\n", SERRNO);
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fcntl(s, F_SETFL, O_NDELAY);
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switch(pid = fork()) {
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case -1:
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die("fork failed\n");
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break;
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case 0:
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setsid(); /* create a new process group */
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dup2(s, STDIN_FILENO);
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dup2(s, STDOUT_FILENO);
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dup2(s, STDERR_FILENO);
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if(ioctl(s, TIOCSCTTY, NULL) < 0)
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die("ioctl TTIOCSTTY failed: %s\n", SERRNO);
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execsh();
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break;
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default:
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close(s);
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cmdfd = m;
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signal(SIGCHLD, sigchld);
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}
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}
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void
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dump(char c) {
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static int col;
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fprintf(stderr, " %02x %c ", c, isprint(c)?c:'.');
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if(++col % 10 == 0)
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fprintf(stderr, "\n");
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}
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void
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ttyread(void) {
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char buf[BUFSIZ] = {0};
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int ret;
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switch(ret = read(cmdfd, buf, BUFSIZ)) {
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case -1:
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die("Couldn't read from shell: %s\n", SERRNO);
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break;
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default:
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tputs(buf, ret);
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}
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}
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void
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ttywrite(char *s, size_t n) {
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if(write(cmdfd, s, n) == -1)
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die("write error on tty: %s\n", SERRNO);
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}
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void
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ttyresize(int x, int y) {
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struct winsize w;
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w.ws_row = term.row;
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w.ws_col = term.col;
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w.ws_xpixel = w.ws_ypixel = 0;
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if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
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fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
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}
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int
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escfinal(char c) {
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if(escseq.len == 1)
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switch(c) {
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case '[':
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case ']':
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case '(':
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return 0;
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case '=':
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case '>':
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default:
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return 1;
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}
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else if(BETWEEN(c, 0x40, 0x7E))
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return 1;
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return 0;
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}
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void
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tcpos(int mode) {
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static int x = 0;
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static int y = 0;
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if(mode == CSsave)
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x = term.c.x, y = term.c.y;
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else if(mode == CSload)
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tmoveto(x, y);
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}
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void
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tnew(int col, int row) { /* screen size */
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term.row = row, term.col = col;
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term.top = 0, term.bot = term.row - 1;
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/* mode */
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term.mode = TMwrap;
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/* cursor */
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term.c.attr.mode = ATnone;
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term.c.attr.fg = DefaultFG;
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term.c.attr.bg = DefaultBG;
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term.c.x = term.c.y = 0;
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term.c.hidden = 0;
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/* allocate screen */
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term.line = calloc(term.row, sizeof(Line));
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for(row = 0 ; row < term.row; row++)
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term.line[row] = calloc(term.col, sizeof(Glyph));
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}
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void
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tscroll(void) {
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Line temp = term.line[term.top];
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int i;
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/* X stuff _before_ the line swapping (results in wrong line index) */
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xscroll();
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for(i = term.top; i < term.bot; i++)
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term.line[i] = term.line[i+1];
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memset(temp, 0, sizeof(Glyph) * term.col);
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term.line[term.bot] = temp;
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}
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void
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tnewline(void) {
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int y = term.c.y + 1;
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if(y > term.bot)
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tscroll(), y = term.bot;
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tmoveto(0, y);
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}
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int
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escaddc(char c) {
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escseq.buf[escseq.len++] = c;
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if(escfinal(c) || escseq.len >= ESCSIZ) {
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escparse(), eschandle();
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return 0;
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}
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return 1;
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}
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void
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escparse(void) {
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/* int noarg = 1; */
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char *p = escseq.buf;
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escseq.narg = 0;
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switch(escseq.pre = *p++) {
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case '[': /* CSI */
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if(*p == '?')
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escseq.priv = 1, p++;
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while(p < escseq.buf+escseq.len) {
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while(isdigit(*p)) {
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escseq.arg[escseq.narg] *= 10;
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escseq.arg[escseq.narg] += *(p++) - '0'/*, noarg = 0 */;
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}
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if(*p == ';')
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escseq.narg++, p++;
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else {
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escseq.mode = *p;
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escseq.narg++;
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return;
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}
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}
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break;
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case '(':
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/* XXX: graphic character set */
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break;
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}
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}
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void
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tmoveto(int x, int y) {
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term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x;
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term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y;
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}
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void
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tcursor(int dir) {
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int xf = term.c.x, yf = term.c.y;
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switch(dir) {
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case CSup:
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yf--;
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break;
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case CSdown:
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yf++;
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break;
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case CSleft:
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xf--;
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if(xf < 0) {
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xf = term.col-1, yf--;
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if(yf < term.top)
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yf = term.top, xf = 0;
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}
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break;
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case CSright:
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xf++;
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if(xf >= term.col) {
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xf = 0, yf++;
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if(yf > term.bot)
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yf = term.bot, tscroll();
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}
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break;
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}
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tmoveto(xf, yf);
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}
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void
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tsetchar(char c) {
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term.line[term.c.y][term.c.x] = term.c.attr;
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term.line[term.c.y][term.c.x].c = c;
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term.line[term.c.y][term.c.x].state |= CRset | CRupdate;
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}
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void
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tclearregion(int x1, int y1, int x2, int y2) {
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int x, y;
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LIMIT(x1, 0, term.col-1);
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LIMIT(x2, 0, term.col-1);
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LIMIT(y1, 0, term.row-1);
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LIMIT(y2, 0, term.row-1);
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/* XXX: could be optimized */
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for(x = x1; x <= x2; x++)
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for(y = y1; y <= y2; y++)
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memset(&term.line[y][x], 0, sizeof(Glyph));
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xclear(x1, y1, x2, y2);
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}
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void
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tdeletechar(int n) {
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int src = term.c.x + n;
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int dst = term.c.x;
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int size = term.col - src;
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if(src >= term.col) {
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tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
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return;
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}
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memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
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tclearregion(term.col-size, term.c.y, term.col-1, term.c.y);
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}
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void
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tinsertblank(int n) {
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int src = term.c.x;
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int dst = src + n;
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int size = term.col - n - src;
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if(dst >= term.col) {
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tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
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return;
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}
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memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
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tclearregion(src, term.c.y, dst, term.c.y);
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}
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void
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tsetlinestate(int n, int state) {
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int i;
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for(i = 0; i < term.col; i++)
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term.line[n][i].state |= state;
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}
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void
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tinsertblankline (int n) {
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int i;
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Line blank;
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int bot = term.bot;
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if(term.c.y > term.bot)
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bot = term.row - 1;
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else if(term.c.y < term.top)
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bot = term.top - 1;
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if(term.c.y + n >= bot) {
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tclearregion(0, term.c.y, term.col-1, bot);
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return;
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}
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for(i = bot; i >= term.c.y+n; i--) {
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/* swap deleted line <-> blanked line */
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blank = term.line[i];
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term.line[i] = term.line[i-n];
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term.line[i-n] = blank;
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/* blank it */
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memset(blank, 0, term.col * sizeof(Glyph));
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tsetlinestate(i, CRupdate);
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tsetlinestate(i-n, CRupdate);
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}
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}
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void
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tdeleteline(int n) {
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int i;
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Line blank;
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int bot = term.bot;
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if(term.c.y > term.bot)
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bot = term.row - 1;
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else if(term.c.y < term.top)
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bot = term.top - 1;
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if(term.c.y + n >= bot) {
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tclearregion(0, term.c.y, term.col-1, bot);
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return;
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}
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for(i = term.c.y; i <= bot-n; i++) {
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/* swap deleted line <-> blanked line */
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blank = term.line[i];
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term.line[i] = term.line[i+n];
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term.line[i+n] = blank;
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/* blank it */
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memset(blank, 0, term.col * sizeof(Glyph));
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tsetlinestate(i, CRupdate);
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tsetlinestate(i-n, CRupdate);
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}
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}
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|
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void
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tsetattr(int *attr, int l) {
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int i;
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for(i = 0; i < l; i++) {
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switch(attr[i]) {
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case 0:
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memset(&term.c.attr, 0, sizeof(term.c.attr));
|
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term.c.attr.fg = DefaultFG;
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term.c.attr.bg = DefaultBG;
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break;
|
|
case 1:
|
|
term.c.attr.mode |= ATbold;
|
|
break;
|
|
case 4:
|
|
term.c.attr.mode |= ATunderline;
|
|
break;
|
|
case 7:
|
|
term.c.attr.mode |= ATreverse;
|
|
break;
|
|
case 8:
|
|
term.c.hidden = CShide;
|
|
break;
|
|
case 22:
|
|
term.c.attr.mode &= ~ATbold;
|
|
break;
|
|
case 24:
|
|
term.c.attr.mode &= ~ATunderline;
|
|
break;
|
|
case 27:
|
|
term.c.attr.mode &= ~ATreverse;
|
|
break;
|
|
case 39:
|
|
term.c.attr.fg = DefaultFG;
|
|
break;
|
|
case 49:
|
|
term.c.attr.fg = DefaultBG;
|
|
break;
|
|
default:
|
|
if(BETWEEN(attr[i], 30, 37))
|
|
term.c.attr.fg = attr[i] - 30;
|
|
else if(BETWEEN(attr[i], 40, 47))
|
|
term.c.attr.bg = attr[i] - 40;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
tsetscroll(int t, int b) {
|
|
int temp;
|
|
|
|
LIMIT(t, 0, term.row-1);
|
|
LIMIT(b, 0, term.row-1);
|
|
if(t > b) {
|
|
temp = t;
|
|
t = b;
|
|
b = temp;
|
|
}
|
|
term.top = t;
|
|
term.bot = b;
|
|
}
|
|
|
|
void
|
|
eschandle(void) {
|
|
switch(escseq.pre) {
|
|
default:
|
|
goto unknown_seq;
|
|
case '[':
|
|
switch(escseq.mode) {
|
|
default:
|
|
unknown_seq:
|
|
fprintf(stderr, "erresc: unknown sequence\n");
|
|
escdump();
|
|
break;
|
|
case '@': /* Insert <n> blank char */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tinsertblank(escseq.arg[0]);
|
|
break;
|
|
case 'A': /* Cursor <n> Up */
|
|
case 'e':
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(term.c.x, term.c.y-escseq.arg[0]);
|
|
break;
|
|
case 'B': /* Cursor <n> Down */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(term.c.x, term.c.y+escseq.arg[0]);
|
|
break;
|
|
case 'C': /* Cursor <n> Forward */
|
|
case 'a':
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(term.c.x+escseq.arg[0], term.c.y);
|
|
break;
|
|
case 'D': /* Cursor <n> Backward */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(term.c.x-escseq.arg[0], term.c.y);
|
|
break;
|
|
case 'E': /* Cursor <n> Down and first col */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(0, term.c.y+escseq.arg[0]);
|
|
break;
|
|
case 'F': /* Cursor <n> Up and first col */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(0, term.c.y-escseq.arg[0]);
|
|
break;
|
|
case 'G': /* Move to <col> */
|
|
case '`':
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(escseq.arg[0]-1, term.c.y);
|
|
break;
|
|
case 'H': /* Move to <row> <col> */
|
|
case 'f':
|
|
DEFAULT(escseq.arg[0], 1);
|
|
DEFAULT(escseq.arg[1], 1);
|
|
tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
|
|
break;
|
|
case 'J': /* Clear screen */
|
|
switch(escseq.arg[0]) {
|
|
case 0: /* below */
|
|
tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
|
|
break;
|
|
case 1: /* above */
|
|
tclearregion(0, 0, term.c.x, term.c.y);
|
|
break;
|
|
case 2: /* all */
|
|
tclearregion(0, 0, term.col-1, term.row-1);
|
|
break;
|
|
}
|
|
break;
|
|
case 'K': /* Clear line */
|
|
switch(escseq.arg[0]) {
|
|
case 0: /* right */
|
|
tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
|
|
break;
|
|
case 1: /* left */
|
|
tclearregion(0, term.c.y, term.c.x, term.c.y);
|
|
break;
|
|
case 2: /* all */
|
|
tclearregion(0, term.c.y, term.col-1, term.c.y);
|
|
break;
|
|
}
|
|
break;
|
|
case 'L': /* Insert <n> blank lines */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tinsertblankline(escseq.arg[0]);
|
|
break;
|
|
case 'l':
|
|
if(escseq.priv && escseq.arg[0] == 25)
|
|
term.c.hidden = 1;
|
|
break;
|
|
case 'M': /* Delete <n> lines */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tdeleteline(escseq.arg[0]);
|
|
break;
|
|
case 'P': /* Delete <n> char */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tdeletechar(escseq.arg[0]);
|
|
break;
|
|
case 'd': /* Move to <row> */
|
|
DEFAULT(escseq.arg[0], 1);
|
|
tmoveto(term.c.x, escseq.arg[0]-1);
|
|
break;
|
|
case 'h': /* Set terminal mode */
|
|
if(escseq.priv && escseq.arg[0] == 25)
|
|
term.c.hidden = 0;
|
|
break;
|
|
case 'm': /* Terminal attribute (color) */
|
|
tsetattr(escseq.arg, escseq.narg);
|
|
break;
|
|
case 'r':
|
|
if(escseq.priv)
|
|
;
|
|
else {
|
|
DEFAULT(escseq.arg[0], 1);
|
|
DEFAULT(escseq.arg[1], term.row);
|
|
tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
|
|
}
|
|
break;
|
|
case 's': /* Save cursor position */
|
|
tcpos(CSsave);
|
|
break;
|
|
case 'u': /* Load cursor position */
|
|
tcpos(CSload);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
escdump(void) {
|
|
int i;
|
|
printf("rawbuf : %s\n", escseq.buf);
|
|
printf("prechar : %c\n", escseq.pre);
|
|
printf("private : %c\n", escseq.priv ? '?' : ' ');
|
|
printf("narg : %d\n", escseq.narg);
|
|
if(escseq.narg)
|
|
for(i = 0; i < escseq.narg; i++)
|
|
printf("\targ %d = %d\n", i, escseq.arg[i]);
|
|
printf("mode : %c\n", escseq.mode);
|
|
}
|
|
|
|
void
|
|
escreset(void) {
|
|
memset(&escseq, 0, sizeof(escseq));
|
|
}
|
|
|
|
void
|
|
tputtab(void) {
|
|
int space = TAB - term.c.x % TAB;
|
|
|
|
if(term.c.x + space >= term.col)
|
|
space--;
|
|
|
|
for(; space > 0; space--)
|
|
tcursor(CSright);
|
|
}
|
|
|
|
void
|
|
tputc(char c) {
|
|
static int inesc = 0;
|
|
#if 0
|
|
dump(c);
|
|
#endif
|
|
/* start of escseq */
|
|
if(c == '\033')
|
|
escreset(), inesc = 1;
|
|
else if(inesc) {
|
|
inesc = escaddc(c);
|
|
} /* normal char */
|
|
else switch(c) {
|
|
default:
|
|
tsetchar(c);
|
|
tcursor(CSright);
|
|
break;
|
|
case '\t':
|
|
tputtab();
|
|
break;
|
|
case '\b':
|
|
tcursor(CSleft);
|
|
break;
|
|
case '\r':
|
|
tmoveto(0, term.c.y);
|
|
break;
|
|
case '\n':
|
|
tnewline();
|
|
break;
|
|
case '\a':
|
|
xbell();
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
tputs(char *s, int len) {
|
|
for(; len > 0; len--)
|
|
tputc(*s++);
|
|
}
|
|
|
|
void
|
|
tdump(void) {
|
|
int row, col;
|
|
Glyph c;
|
|
|
|
for(row = 0; row < term.row; row++) {
|
|
for(col = 0; col < term.col; col++) {
|
|
if(col == term.c.x && row == term.c.y)
|
|
putchar('#');
|
|
else {
|
|
c = term.line[row][col];
|
|
putchar(c.state & CRset ? c.c : '.');
|
|
}
|
|
}
|
|
putchar('\n');
|
|
}
|
|
}
|
|
|
|
void
|
|
tresize(int col, int row) {
|
|
int i;
|
|
Line *line;
|
|
int minrow = MIN(row, term.row);
|
|
int mincol = MIN(col, term.col);
|
|
|
|
if(col < 1 || row < 1)
|
|
return;
|
|
/* alloc */
|
|
line = calloc(row, sizeof(Line));
|
|
for(i = 0 ; i < row; i++)
|
|
line[i] = calloc(col, sizeof(Glyph));
|
|
/* copy */
|
|
for(i = 0 ; i < minrow; i++)
|
|
memcpy(line[i], term.line[i], mincol * sizeof(Glyph));
|
|
/* free */
|
|
for(i = 0; i < term.row; i++)
|
|
free(term.line[i]);
|
|
free(term.line);
|
|
|
|
LIMIT(term.c.x, 0, col-1);
|
|
LIMIT(term.c.y, 0, row-1);
|
|
LIMIT(term.top, 0, row-1);
|
|
LIMIT(term.bot, 0, row-1);
|
|
|
|
term.bot = row-1;
|
|
term.line = line;
|
|
term.col = col, term.row = row;
|
|
}
|
|
|
|
unsigned long
|
|
xgetcol(const char *s) {
|
|
XColor color;
|
|
Colormap cmap = DefaultColormap(xw.dis, xw.scr);
|
|
|
|
if(!XAllocNamedColor(xw.dis, cmap, s, &color, &color)) {
|
|
color.pixel = WhitePixel(xw.dis, xw.scr);
|
|
fprintf(stderr, "Could not allocate color '%s'\n", s);
|
|
}
|
|
return color.pixel;
|
|
}
|
|
|
|
void
|
|
xclear(int x1, int y1, int x2, int y2) {
|
|
XClearArea(xw.dis, xw.win,
|
|
x1 * xw.cw, y1 * xw.ch,
|
|
(x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch,
|
|
False);
|
|
}
|
|
|
|
void
|
|
xscroll(void) {
|
|
int srcy = (term.top+1) * xw.ch;
|
|
int dsty = term.top * xw.ch;
|
|
int height = (term.bot-term.top) * xw.ch;
|
|
|
|
xcursor(CShide);
|
|
XCopyArea(xw.dis, xw.win, xw.win, dc.gc, 0, srcy, xw.w, height, 0, dsty);
|
|
xclear(0, term.bot, term.col-1, term.bot);
|
|
}
|
|
|
|
void
|
|
xinit(void) {
|
|
XGCValues values;
|
|
unsigned long valuemask;
|
|
XClassHint chint;
|
|
XWMHints wmhint;
|
|
XSizeHints shint;
|
|
char *args[] = {NULL};
|
|
int i;
|
|
|
|
xw.dis = XOpenDisplay(NULL);
|
|
xw.scr = XDefaultScreen(xw.dis);
|
|
if(!xw.dis)
|
|
die("Can't open display\n");
|
|
|
|
/* font */
|
|
if(!(dc.font = XLoadQueryFont(xw.dis, FONT)))
|
|
die("Can't load font %s\n", FONT);
|
|
|
|
xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
|
|
xw.ch = dc.font->ascent + dc.font->descent + LINESPACE;
|
|
|
|
/* colors */
|
|
for(i = 0; i < LEN(colorname); i++)
|
|
dc.col[i] = xgetcol(colorname[i]);
|
|
|
|
term.c.attr.fg = DefaultFG;
|
|
term.c.attr.bg = DefaultBG;
|
|
term.c.attr.mode = ATnone;
|
|
/* windows */
|
|
xw.h = term.row * xw.ch;
|
|
xw.w = term.col * xw.cw;
|
|
/* XXX: this BORDER is useless after the first resize, handle it in xdraws() */
|
|
xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
|
|
xw.w, xw.h, BORDER,
|
|
dc.col[DefaultBG],
|
|
dc.col[DefaultBG]);
|
|
/* gc */
|
|
values.foreground = XWhitePixel(xw.dis, xw.scr);
|
|
values.font = dc.font->fid;
|
|
valuemask = GCForeground | GCFont;
|
|
dc.gc = XCreateGC(xw.dis, xw.win, valuemask, &values);
|
|
XMapWindow(xw.dis, xw.win);
|
|
/* wm stuff */
|
|
chint.res_name = TNAME, chint.res_class = TNAME;
|
|
wmhint.input = 1, wmhint.flags = InputHint;
|
|
shint.height_inc = xw.ch, shint.width_inc = xw.cw;
|
|
shint.height = xw.h, shint.width = xw.w;
|
|
shint.flags = PSize | PResizeInc;
|
|
XSetWMProperties(xw.dis, xw.win, NULL, NULL, &args[0], 0, &shint, &wmhint, &chint);
|
|
XStoreName(xw.dis, xw.win, TNAME);
|
|
XSync(xw.dis, 0);
|
|
}
|
|
|
|
void
|
|
xdrawc(int x, int y, Glyph g) {
|
|
XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
|
|
unsigned long xfg, xbg;
|
|
|
|
/* reverse video */
|
|
if(g.mode & ATreverse)
|
|
xfg = dc.col[g.bg], xbg = dc.col[g.fg];
|
|
else
|
|
xfg = dc.col[g.fg], xbg = dc.col[g.bg];
|
|
/* background */
|
|
XSetForeground(xw.dis, dc.gc, xbg);
|
|
XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
|
|
/* string */
|
|
XSetForeground(xw.dis, dc.gc, xfg);
|
|
XDrawString(xw.dis, xw.win, dc.gc, r.x, r.y+dc.font->ascent, &(g.c), 1);
|
|
if(g.mode & ATbold) /* XXX: bold hack (draw again at x+1) */
|
|
XDrawString(xw.dis, xw.win, dc.gc, r.x+1, r.y+dc.font->ascent, &(g.c), 1);
|
|
/* underline */
|
|
if(g.mode & ATunderline) {
|
|
r.y += dc.font->ascent + 1;
|
|
XDrawLine(xw.dis, xw.win, dc.gc, r.x, r.y, r.x+r.width-1, r.y);
|
|
}
|
|
}
|
|
|
|
void
|
|
xcursor(int mode) {
|
|
static int oldx = 0;
|
|
static int oldy = 0;
|
|
Glyph g = {' ', ATnone, 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 & CRset)
|
|
g.c = term.line[term.c.y][term.c.x].c;
|
|
/* remove the old cursor */
|
|
if(term.line[oldy][oldx].state & CRset)
|
|
xdrawc(oldx, oldy, term.line[oldy][oldx]);
|
|
else
|
|
xclear(oldx, oldy, oldx, oldy);
|
|
/* draw the new one */
|
|
if(mode == CSdraw) {
|
|
xdrawc(term.c.x, term.c.y, g);
|
|
oldx = term.c.x, oldy = term.c.y;
|
|
}
|
|
}
|
|
|
|
void
|
|
draw(int redraw_all) {
|
|
int x, y;
|
|
int changed, set;
|
|
|
|
if(redraw_all)
|
|
XClearWindow(xw.dis, xw.win);
|
|
|
|
/* XXX: drawing could be optimised */
|
|
for(y = 0; y < term.row; y++) {
|
|
for(x = 0; x < term.col; x++) {
|
|
changed = term.line[y][x].state & CRupdate;
|
|
set = term.line[y][x].state & CRset;
|
|
if(redraw_all || changed) {
|
|
term.line[y][x].state &= ~CRupdate;
|
|
if(set)
|
|
xdrawc(x, y, term.line[y][x]);
|
|
else
|
|
xclear(x, y, x, y);
|
|
}
|
|
}
|
|
}
|
|
xcursor(CSdraw);
|
|
}
|
|
|
|
void
|
|
kpress(XKeyEvent *e) {
|
|
KeySym ksym;
|
|
char buf[32];
|
|
int len;
|
|
int meta;
|
|
int shift;
|
|
char* skmap;
|
|
|
|
meta = e->state & Mod1Mask;
|
|
shift = e->state & ShiftMask;
|
|
len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
|
|
if(skmap = key[ksym])
|
|
ttywrite(skmap, strlen(skmap));
|
|
else if(len > 0) {
|
|
buf[sizeof(buf)-1] = '\0';
|
|
if(meta && len == 1)
|
|
ttywrite("\033", 1);
|
|
ttywrite(buf, len);
|
|
} else
|
|
switch(ksym) {
|
|
case XK_Insert:
|
|
if(shift)
|
|
/* XXX: paste X clipboard */;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "errkey: %d\n", (int)ksym);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
resize(XEvent *e) {
|
|
int col, row;
|
|
col = e->xconfigure.width / xw.cw;
|
|
row = e->xconfigure.height / xw.ch;
|
|
|
|
if(term.col != col || term.row != row) {
|
|
tresize(col, row);
|
|
ttyresize(col, row);
|
|
xw.w = e->xconfigure.width;
|
|
xw.h = e->xconfigure.height;
|
|
draw(SCredraw);
|
|
}
|
|
}
|
|
|
|
void
|
|
run(void) {
|
|
int ret;
|
|
XEvent ev;
|
|
fd_set rfd;
|
|
int xfd = XConnectionNumber(xw.dis);
|
|
|
|
running = 1;
|
|
XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask | StructureNotifyMask);
|
|
XResizeWindow(xw.dis, xw.win, xw.w , xw.h); /* fix resize bug in wmii (?) */
|
|
|
|
while(running) {
|
|
FD_ZERO(&rfd);
|
|
FD_SET(cmdfd, &rfd);
|
|
FD_SET(xfd, &rfd);
|
|
XFlush(xw.dis);
|
|
ret = select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL);
|
|
|
|
if(ret < 0)
|
|
die("select failed: %s\n", SERRNO);
|
|
|
|
if(FD_ISSET(xfd, &rfd)) {
|
|
while(XPending(xw.dis)) {
|
|
XNextEvent(xw.dis, &ev);
|
|
switch (ev.type) {
|
|
default:
|
|
break;
|
|
case KeyPress:
|
|
kpress(&ev.xkey);
|
|
break;
|
|
case Expose:
|
|
draw(SCredraw);
|
|
break;
|
|
case ConfigureNotify:
|
|
resize(&ev);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(FD_ISSET(cmdfd, &rfd)) {
|
|
ttyread();
|
|
draw(SCupdate);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[]) {
|
|
if(argc == 2 && !strncmp("-v", argv[1], 3))
|
|
die("st-" VERSION ", © 2009 st engineers\n");
|
|
else if(argc != 1)
|
|
die("usage: st [-v]\n");
|
|
setlocale(LC_CTYPE, "");
|
|
tnew(80, 24);
|
|
ttynew();
|
|
xinit();
|
|
run();
|
|
return 0;
|
|
}
|