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This adds the fontcache dependency to try something out. Additionally the
[st.git] / st.c
diff --git a/st.c b/st.c
index fe2b922..b4dc591 100644 (file)
--- a/st.c
+++ b/st.c
 #include <X11/cursorfont.h>
 #include <X11/keysym.h>
 #include <X11/extensions/Xdbe.h>
+#include <X11/Xft/Xft.h>
+#include <fontconfig/fontconfig.h>
+#define Glyph Glyph_
+#define Font Font_
 
 #if   defined(__linux)
  #include <pty.h>
@@ -36,8 +40,8 @@
 
 #define USAGE \
        "st " VERSION " (c) 2010-2012 st engineers\n" \
-       "usage: st [-t title] [-c class] [-g geometry]" \
-       " [-w windowid] [-v] [-f file] [-e command...]\n"
+       "usage: st [-v] [-c class] [-f font] [-g geometry] [-o file]" \
+       " [-t title] [-w windowid] [-e command ...]\n"
 
 /* XEMBED messages */
 #define XEMBED_FOCUS_IN  4
 #define ESC_ARG_SIZ   16
 #define STR_BUF_SIZ   256
 #define STR_ARG_SIZ   16
-#define DRAW_BUF_SIZ  1024
+#define DRAW_BUF_SIZ  20*1024
 #define UTF_SIZ       4
 #define XK_NO_MOD     UINT_MAX
 #define XK_ANY_MOD    0
 
-#define SELECT_TIMEOUT (20*1000) /* 20 ms */
-#define DRAW_TIMEOUT  (20*1000) /* 20 ms */
 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
 
 #define SERRNO strerror(errno)
@@ -109,7 +111,8 @@ enum term_mode {
        MODE_MOUSEBTN    = 32,
        MODE_MOUSEMOTION = 64,
        MODE_MOUSE       = 32|64,
-       MODE_REVERSE     = 128
+       MODE_REVERSE     = 128,
+       MODE_KBDLOCK     = 256
 };
 
 enum escape_state {
@@ -197,15 +200,17 @@ typedef struct {
        Atom xembed;
        XIM xim;
        XIC xic;
+       XftDraw *xft_draw;
+       Visual *vis;
        int scr;
-       Bool isfixed; /* is fixed geometry? */
+       bool isfixed; /* is fixed geometry? */
        int fx, fy, fw, fh; /* fixed geometry */
+       int tw, th; /* tty width and height */
        int w;  /* window width */
        int h;  /* window height */
        int ch; /* char height */
        int cw; /* char width  */
        char state; /* focus, redraw, visible */
-       struct timeval lastdraw;
 } XWindow;
 
 typedef struct {
@@ -214,7 +219,6 @@ typedef struct {
        char s[ESC_BUF_SIZ];
 } Key;
 
-
 /* TODO: use better name for vars... */
 typedef struct {
        int mode;
@@ -230,17 +234,22 @@ typedef struct {
 
 #include "config.h"
 
+/* Font structure */
+typedef struct {
+       int height;
+       int width;
+       int ascent;
+       int descent;
+       short lbearing;
+       short rbearing;
+       XftFont* xft_set;
+} Font;
+
 /* Drawing Context */
 typedef struct {
-       ulong col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
+       XftColor xft_col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
        GC gc;
-       struct {
-               int ascent;
-               int descent;
-               short lbearing;
-               short rbearing;
-               XFontSet set;
-       } font, bfont, ifont;
+       Font font, bfont, ifont, ibfont;
 } DC;
 
 static void die(const char*, ...);
@@ -250,7 +259,6 @@ static void drawregion(int, int, int, int);
 static void execsh(void);
 static void sigchld(int);
 static void run(void);
-static bool last_draw_too_old(void);
 
 static void csidump(void);
 static void csihandle(void);
@@ -271,7 +279,7 @@ static void tmoveto(int, int);
 static void tnew(int, int);
 static void tnewline(int);
 static void tputtab(bool);
-static void tputc(char*);
+static void tputc(char*, int);
 static void treset(void);
 static int tresize(int, int);
 static void tscrollup(int, int);
@@ -286,19 +294,20 @@ static void tfulldirt(void);
 
 static void ttynew(void);
 static void ttyread(void);
-static void ttyresize(int, int);
+static void ttyresize(void);
 static void ttywrite(const char *, size_t);
 
 static void xdraws(char *, Glyph, int, int, int, int);
 static void xhints(void);
 static void xclear(int, int, int, int);
-static void xcopy(void);
+static void xclearborders(void);
 static void xdrawcursor(void);
 static void xinit(void);
 static void xloadcols(void);
 static void xresettitle(void);
 static void xseturgency(int);
 static void xsetsel(char*);
+static void xtermclear(int, int, int, int);
 static void xresize(int, int);
 
 static void expose(XEvent *);
@@ -329,6 +338,8 @@ static int isfullutf8(char *, int);
 
 static void *xmalloc(size_t);
 static void *xrealloc(void *, size_t);
+static void *xcalloc(size_t nmemb, size_t size);
+static char *smstrcat(char *, ...);
 
 static void (*handler[LASTEvent])(XEvent *) = {
        [KeyPress] = kpress,
@@ -357,27 +368,74 @@ static int cmdfd;
 static pid_t pid;
 static Selection sel;
 static int iofd = -1;
-static char **opt_cmd  = NULL;
-static char *opt_io    = NULL;
+static char **opt_cmd = NULL;
+static char *opt_io = NULL;
 static char *opt_title = NULL;
 static char *opt_embed = NULL;
 static char *opt_class = NULL;
+static char *opt_font = NULL;
 
 void *
 xmalloc(size_t len) {
        void *p = malloc(len);
        if(!p)
-               die("Out of memory");
+               die("Out of memory\n");
        return p;
 }
 
 void *
 xrealloc(void *p, size_t len) {
        if((p = realloc(p, len)) == NULL)
-               die("Out of memory");
+               die("Out of memory\n");
+       return p;
+}
+
+void *
+xcalloc(size_t nmemb, size_t size) {
+       void *p = calloc(nmemb, size);
+       if(!p)
+               die("Out of memory\n");
        return p;
 }
 
+char *
+smstrcat(char *src, ...)
+{
+       va_list fmtargs;
+       char *ret, *p, *v;
+       int len, slen, flen;
+
+       len = slen = strlen(src);
+
+       va_start(fmtargs, src);
+       for(;;) {
+               v = va_arg(fmtargs, char *);
+               if(v == NULL)
+                       break;
+               len += strlen(v);
+       }
+       va_end(fmtargs);
+
+       p = ret = xmalloc(len+1);
+       memmove(p, src, slen);
+       p += slen;
+
+       va_start(fmtargs, src);
+       for(;;) {
+               v = va_arg(fmtargs, char *);
+               if(v == NULL)
+                       break;
+               flen = strlen(v);
+               memmove(p, v, flen);
+               p += flen;
+       }
+       va_end(fmtargs);
+
+       ret[len] = '\0';
+
+       return ret;
+}
+
 int
 utf8decode(char *s, long *u) {
        uchar c;
@@ -566,8 +624,11 @@ bpress(XEvent *e) {
        if(IS_SET(MODE_MOUSE))
                mousereport(e);
        else if(e->xbutton.button == Button1) {
-               if(sel.bx != -1)
+               if(sel.bx != -1) {
+                       sel.bx = -1;
                        tsetdirt(sel.b.y, sel.e.y);
+                       draw();
+               }
                sel.mode = 1;
                sel.ex = sel.bx = X2COL(e->xbutton.x);
                sel.ey = sel.by = Y2ROW(e->xbutton.y);
@@ -589,14 +650,17 @@ selcopy(void) {
                /* append every set & selected glyph to the selection */
                for(y = 0; y < term.row; y++) {
                        for(x = 0; x < term.col; x++) {
-                               is_selected = selected(x, y);
-                               if((term.line[y][x].state & GLYPH_SET) && is_selected) {
-                                       int size = utf8size(term.line[y][x].c);
-                                       memcpy(ptr, term.line[y][x].c, size);
-                                       ptr += size;
-                               }
+                               int size;
+                               char *p;
+                               Glyph *gp = &term.line[y][x];
+
+                               if(!(is_selected = selected(x, y)))
+                                       continue;
+                               p = (gp->state & GLYPH_SET) ? gp->c : " ";
+                               size = utf8size(p);
+                               memcpy(ptr, p, size);
+                               ptr += size;
                        }
-
                        /* \n at the end of every selected line except for the last one */
                        if(is_selected && y < sel.e.y)
                                *ptr++ = '\n';
@@ -639,7 +703,6 @@ void selclear(XEvent *e) {
                return;
        sel.bx = -1;
        tsetdirt(sel.b.y, sel.e.y);
-       draw();
 }
 
 void
@@ -689,8 +752,6 @@ xsetsel(char *str) {
 
        clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
        XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
-
-       XFlush(xw.dpy);
 }
 
 void
@@ -733,7 +794,6 @@ brelease(XEvent *e) {
        }
        memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
        gettimeofday(&sel.tclick1, NULL);
-       draw();
 }
 
 void
@@ -750,7 +810,6 @@ bmotion(XEvent *e) {
                        int starty = MIN(oldey, sel.ey);
                        int endy = MAX(oldey, sel.ey);
                        tsetdirt(starty, endy);
-                       draw();
                }
        }
 }
@@ -774,6 +833,13 @@ execsh(void) {
        unsetenv("LINES");
        unsetenv("TERMCAP");
 
+       signal(SIGCHLD, SIG_DFL);
+       signal(SIGHUP, SIG_DFL);
+       signal(SIGINT, SIG_DFL);
+       signal(SIGQUIT, SIG_DFL);
+       signal(SIGTERM, SIG_DFL);
+       signal(SIGALRM, SIG_DFL);
+
        DEFAULT(envshell, SHELL);
        putenv("TERM="TNAME);
        args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
@@ -861,7 +927,7 @@ ttyread(void) {
        while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
                charsize = utf8decode(ptr, &utf8c);
                utf8encode(&utf8c, s);
-               tputc(s);
+               tputc(s, charsize);
                ptr    += charsize;
                buflen -= charsize;
        }
@@ -877,13 +943,13 @@ ttywrite(const char *s, size_t n) {
 }
 
 void
-ttyresize(int x, int y) {
+ttyresize(void) {
        struct winsize w;
 
        w.ws_row = term.row;
        w.ws_col = term.col;
-       w.ws_xpixel = xw.w;
-       w.ws_ypixel = xw.h;
+       w.ws_xpixel = xw.tw;
+       w.ws_ypixel = xw.th;
        if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
                fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
 }
@@ -918,7 +984,7 @@ tcursor(int mode) {
 
 void
 treset(void) {
-       unsigned i;
+       uint i;
        term.c = (TCursor){{
                .mode = ATTR_NULL,
                .fg = DefaultFG,
@@ -930,6 +996,7 @@ treset(void) {
                term.tabs[i] = 1;
        term.top = 0, term.bot = term.row - 1;
        term.mode = MODE_WRAP;
+
        tclearregion(0, 0, term.col-1, term.row-1);
 }
 
@@ -1070,6 +1137,27 @@ tmoveto(int x, int y) {
 
 void
 tsetchar(char *c) {
+       /*
+        * The table is proudly stolen from rxvt.
+        */
+       if(term.c.attr.mode & ATTR_GFX) {
+               char *vt100_0[62] = { /* 0x41 - 0x7e */
+                       "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
+                       0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
+                       0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
+                       0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
+                       "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
+                       "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
+                       "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
+                       "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
+               };
+
+               if(c[0] >= 0x41 && c[0] <= 0x7e
+                               && vt100_0[c[0] - 0x41]) {
+                       c = vt100_0[c[0] - 0x41];
+               }
+       }
+
        term.dirty[term.c.y] = 1;
        term.line[term.c.y][term.c.x] = term.c.attr;
        memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
@@ -1256,21 +1344,24 @@ tsetmode(bool priv, bool set, int *args, int narg) {
        for(lim = args + narg; args < lim; ++args) {
                if(priv) {
                        switch(*args) {
-                       case 1:
+                               break;
+                       case 1: /* DECCKM -- Cursor key */
                                MODBIT(term.mode, set, MODE_APPKEYPAD);
                                break;
-                       case 5: /* DECSCNM -- Reverve video */
+                       case 5: /* DECSCNM -- Reverse video */
                                mode = term.mode;
-                               MODBIT(term.mode,set, MODE_REVERSE);
+                               MODBIT(term.mode, set, MODE_REVERSE);
                                if(mode != term.mode)
                                        redraw();
                                break;
-                       case 7:
+                       case 6: /* XXX: DECOM -- Origin */
+                               break;
+                       case 7: /* DECAWM -- Auto wrap */
                                MODBIT(term.mode, set, MODE_WRAP);
                                break;
-                       case 20:
-                               MODBIT(term.mode, set, MODE_CRLF);
+                       case 8: /* XXX: DECARM -- Auto repeat */
                                break;
+                       case 0:  /* Error (IGNORED) */
                        case 12: /* att610 -- Start blinking cursor (IGNORED) */
                                break;
                        case 25:
@@ -1298,6 +1389,12 @@ tsetmode(bool priv, bool set, int *args, int narg) {
                                tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
                                break;
                        default:
+                       /* case 2:  DECANM -- ANSI/VT52 (NOT SUPPOURTED) */
+                       /* case 3:  DECCOLM -- Column  (NOT SUPPORTED) */
+                       /* case 4:  DECSCLM -- Scroll (NOT SUPPORTED) */
+                       /* case 18: DECPFF -- Printer feed (NOT SUPPORTED) */
+                       /* case 19: DECPEX -- Printer extent (NOT SUPPORTED) */
+                       /* case 42: DECNRCM -- National characters (NOT SUPPORTED) */
                                fprintf(stderr,
                                        "erresc: unknown private set/reset mode %d\n",
                                        *args);
@@ -1305,9 +1402,19 @@ tsetmode(bool priv, bool set, int *args, int narg) {
                        }
                } else {
                        switch(*args) {
-                       case 4:
+                       case 0:  /* Error (IGNORED) */
+                               break;
+                       case 2:  /* KAM -- keyboard action */
+                               MODBIT(term.mode, set, MODE_KBDLOCK);
+                               break;
+                       case 4:  /* IRM -- Insertion-replacement */
                                MODBIT(term.mode, set, MODE_INSERT);
                                break;
+                       case 12: /* XXX: SRM -- Send/Receive */
+                               break;
+                       case 20: /* LNM -- Linefeed/new line */
+                               MODBIT(term.mode, set, MODE_CRLF);
+                               break;
                        default:
                                fprintf(stderr,
                                        "erresc: unknown set/reset mode %d\n",
@@ -1581,7 +1688,7 @@ strreset(void) {
 
 void
 tputtab(bool forward) {
-       unsigned x = term.c.x;
+       uint x = term.c.x;
 
        if(forward) {
                if(x == term.col)
@@ -1598,11 +1705,40 @@ tputtab(bool forward) {
 }
 
 void
-tputc(char *c) {
-       char ascii = *c;
+tputc(char *c, int len) {
+       uchar ascii = *c;
 
        if(iofd != -1)
-               write(iofd, c, 1);
+               write(iofd, c, len);
+
+       switch(ascii) {
+       case '\t':
+               tputtab(1);
+               return;
+       case '\b':
+               tmoveto(term.c.x-1, term.c.y);
+               return;
+       case '\r':
+               tmoveto(0, term.c.y);
+               return;
+       case '\f':
+       case '\v':
+       case '\n':
+               /* go to first col if the mode is set */
+               tnewline(IS_SET(MODE_CRLF));
+               return;
+       case '\a':
+               if(term.esc & ESC_STR)
+                       break;
+
+               if(!(xw.state & WIN_FOCUSED))
+                       xseturgency(1);
+               return;
+       case '\033':
+               csireset();
+               term.esc = ESC_START;
+               return;
+       }
 
        if(term.esc & ESC_START) {
                if(term.esc & ESC_CSI) {
@@ -1633,12 +1769,18 @@ tputc(char *c) {
                                strhandle();
                } else if(term.esc & ESC_ALTCHARSET) {
                        switch(ascii) {
-                       case '0': /* Line drawing crap */
+                       case '0': /* Line drawing set */
                                term.c.attr.mode |= ATTR_GFX;
                                break;
-                       case 'B': /* Back to regular text */
+                       case 'B': /* USASCII */
                                term.c.attr.mode &= ~ATTR_GFX;
                                break;
+                       case 'A': /* UK (IGNORED) */
+                       case '<': /* multinational charset (IGNORED) */
+                       case '5': /* Finnish (IGNORED) */
+                       case 'C': /* Finnish (IGNORED) */
+                       case 'K': /* German (IGNORED) */
+                               break;
                        default:
                                fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
                        }
@@ -1657,9 +1799,14 @@ tputc(char *c) {
                                strescseq.type = ascii;
                                term.esc |= ESC_STR;
                                break;
-                       case '(':
+                       case '(': /* set primary charset G0 */
                                term.esc |= ESC_ALTCHARSET;
                                break;
+                       case ')': /* set secondary charset G1 (IGNORED) */
+                       case '*': /* set tertiary charset G2 (IGNORED) */
+                       case '+': /* set quaternary charset G3 (IGNORED) */
+                               term.esc = 0;
+                               break;
                        case 'D': /* IND -- Linefeed */
                                if(term.c.y == term.bot)
                                        tscrollup(term.top, 1);
@@ -1685,6 +1832,7 @@ tputc(char *c) {
                        case 'c': /* RIS -- Reset to inital state */
                                treset();
                                term.esc = 0;
+                               xclearborders();
                                xresettitle();
                                break;
                        case '=': /* DECPAM -- Application keypad */
@@ -1715,31 +1863,7 @@ tputc(char *c) {
        } else {
                if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
                        sel.bx = -1;
-               switch(ascii) {
-               case '\t':
-                       tputtab(1);
-                       break;
-               case '\b':
-                       tmoveto(term.c.x-1, term.c.y);
-                       break;
-               case '\r':
-                       tmoveto(0, term.c.y);
-                       break;
-               case '\f':
-               case '\v':
-               case '\n':
-                       /* go to first col if the mode is set */
-                       tnewline(IS_SET(MODE_CRLF));
-                       break;
-               case '\a':
-                       if(!(xw.state & WIN_FOCUSED))
-                               xseturgency(1);
-                       break;
-               case '\033':
-                       csireset();
-                       term.esc = ESC_START;
-                       break;
-               default:
+               if(ascii >= '\020' || term.c.attr.mode & ATTR_GFX) {
                        if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
                                tnewline(1); /* always go to first col */
                        tsetchar(c);
@@ -1799,8 +1923,8 @@ tresize(int col, int row) {
        /* allocate any new rows */
        for(/* i == minrow */; i < row; i++) {
                term.dirty[i] = 1;
-               term.line[i] = calloc(col, sizeof(Glyph));
-               term.alt [i] = calloc(col, sizeof(Glyph));
+               term.line[i] = xcalloc(col, sizeof(Glyph));
+               term.alt [i] = xcalloc(col, sizeof(Glyph));
        }
        if(col > term.col) {
                bool *bp = term.tabs + term.col;
@@ -1823,58 +1947,79 @@ tresize(int col, int row) {
 
 void
 xresize(int col, int row) {
-       xw.w = MAX(1, 2*BORDER + col * xw.cw);
-       xw.h = MAX(1, 2*BORDER + row * xw.ch);
+       xw.tw = MAX(1, 2*BORDER + col * xw.cw);
+       xw.th = MAX(1, 2*BORDER + row * xw.ch);
+
+       XftDrawChange(xw.xft_draw, xw.buf);
 }
 
 void
 xloadcols(void) {
        int i, r, g, b;
-       XColor color;
-       ulong white = WhitePixel(xw.dpy, xw.scr);
+       XRenderColor xft_color = { .alpha = 0 };
 
        /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
        for(i = 0; i < LEN(colorname); i++) {
                if(!colorname[i])
                        continue;
-               if(!XAllocNamedColor(xw.dpy, xw.cmap, colorname[i], &color, &color)) {
-                       dc.col[i] = white;
-                       fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
-               } else
-                       dc.col[i] = color.pixel;
+               if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.xft_col[i])) {
+                       die("Could not allocate color '%s'\n", colorname[i]);
+               }
        }
 
        /* load colors [16-255] ; same colors as xterm */
-       for(i = 16, r = 0; r < 6; r++)
-               for(g = 0; g < 6; g++)
+       for(i = 16, r = 0; r < 6; r++) {
+               for(g = 0; g < 6; g++) {
                        for(b = 0; b < 6; b++) {
-                               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.dpy, xw.cmap, &color)) {
-                                       dc.col[i] = white;
-                                       fprintf(stderr, "Could not allocate color %d\n", i);
-                               } else
-                                       dc.col[i] = color.pixel;
+                               xft_color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
+                               xft_color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
+                               xft_color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
+                               if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color, &dc.xft_col[i])) {
+                                       die("Could not allocate color %d\n", i);
+                               }
                                i++;
                        }
+               }
+       }
 
        for(r = 0; r < 24; r++, i++) {
-               color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
-               if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
-                       dc.col[i] = white;
-                       fprintf(stderr, "Could not allocate color %d\n", i);
-               } else
-                       dc.col[i] = color.pixel;
+               xft_color.red = xft_color.green = xft_color.blue = 0x0808 + 0x0a0a * r;
+               if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color, &dc.xft_col[i])) {
+                       die("Could not allocate color %d\n", i);
+               }
        }
 }
 
 void
+xtermclear(int col1, int row1, int col2, int row2) {
+       XftDrawRect(xw.xft_draw,
+                       &dc.xft_col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG],
+                       BORDER + col1 * xw.cw,
+                       BORDER + row1 * xw.ch,
+                       (col2-col1+1) * xw.cw,
+                       (row2-row1+1) * xw.ch);
+}
+
+/*
+ * Absolute coordinates.
+ */
+void
 xclear(int x1, int y1, int x2, int y2) {
-       XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG]);
-       XFillRectangle(xw.dpy, xw.buf, dc.gc,
-                      BORDER + x1 * xw.cw, BORDER + y1 * xw.ch,
-                      (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
+       XftDrawRect(xw.xft_draw,
+                       &dc.xft_col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG],
+                       x1, y1, x2-x1, y2-y1);
+}
+
+void
+xclearborders(void) {
+       /* top and left border */
+       xclear(0, 0, BORDER, xw.h);
+       xclear(0, 0, xw.w, BORDER);
+
+       /* lower and right border */
+       xclear(BORDER, xw.th - 1, xw.w, xw.h);
+       /* Will just draw what hasn't been drawn by the previous call. */
+       xclear(xw.tw - 1, BORDER, xw.w, xw.h - xw.th - 2);
 }
 
 void
@@ -1902,54 +2047,52 @@ xhints(void) {
        XFree(sizeh);
 }
 
-XFontSet
-xinitfont(char *fontstr) {
-       XFontSet set;
-       char *def, **missing;
-       int n;
+void
+xinitfont(Font *f, char *fontstr) {
+       FcPattern *pattern, *match;
+       FcResult result;
+
+       pattern = FcNameParse((FcChar8 *)fontstr);
+       if(!pattern)
+               die("st: can't open font %s\n", fontstr);
 
-       missing = NULL;
-       set = XCreateFontSet(xw.dpy, fontstr, &missing, &n, &def);
-       if(missing) {
-               while(n--)
-                       fprintf(stderr, "st: missing fontset: %s\n", missing[n]);
-               XFreeStringList(missing);
+       match = XftFontMatch(xw.dpy, xw.scr, pattern, &result);
+       FcPatternDestroy(pattern);
+       if(!match)
+               die("st: can't open font %s\n", fontstr);
+       if(!(f->xft_set = XftFontOpenPattern(xw.dpy, match))) {
+               FcPatternDestroy(match);
+               die("st: can't open font %s.\n", fontstr);
        }
-       return set;
-}
 
-void
-xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rbearing) {
-       XFontStruct **xfonts;
-       char **font_names;
-       int i, n;
+       f->ascent = f->xft_set->ascent;
+       f->descent = f->xft_set->descent;
+       f->lbearing = 0;
+       f->rbearing = f->xft_set->max_advance_width;
 
-       *ascent = *descent = *lbearing = *rbearing = 0;
-       n = XFontsOfFontSet(set, &xfonts, &font_names);
-       for(i = 0; i < n; i++) {
-               *ascent = MAX(*ascent, (*xfonts)->ascent);
-               *descent = MAX(*descent, (*xfonts)->descent);
-               *lbearing = MAX(*lbearing, (*xfonts)->min_bounds.lbearing);
-               *rbearing = MAX(*rbearing, (*xfonts)->max_bounds.rbearing);
-               xfonts++;
-       }
+       f->height = f->xft_set->height;
+       f->width = f->lbearing + f->rbearing;
 }
 
 void
-initfonts(char *fontstr, char *bfontstr, char *ifontstr) {
-       if((dc.font.set = xinitfont(fontstr)) == NULL)
-               die("Can't load font %s\n", fontstr);
-       if((dc.bfont.set = xinitfont(bfontstr)) == NULL)
-               die("Can't load bfont %s\n", bfontstr);
-       if((dc.ifont.set = xinitfont(ifontstr)) == NULL)
-               die("Can't load ifont %s\n", ifontstr);
+initfonts(char *fontstr) {
+       char *fstr;
+
+       xinitfont(&dc.font, fontstr);
+       xw.cw = dc.font.width;
+       xw.ch = dc.font.height;
+
+       fstr = smstrcat(fontstr, ":weight=bold", NULL);
+       xinitfont(&dc.bfont, fstr);
+       free(fstr);
+
+       fstr = smstrcat(fontstr, ":slant=italic,oblique", NULL);
+       xinitfont(&dc.ifont, fstr);
+       free(fstr);
 
-       xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
-           &dc.font.lbearing, &dc.font.rbearing);
-       xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
-           &dc.bfont.lbearing, &dc.bfont.rbearing);
-       xgetfontinfo(dc.ifont.set, &dc.ifont.ascent, &dc.ifont.descent,
-           &dc.ifont.lbearing, &dc.ifont.rbearing);
+       fstr = smstrcat(fontstr, ":weight=bold:slant=italic,oblique", NULL);
+       xinitfont(&dc.ibfont, fstr);
+       free(fstr);
 }
 
 void
@@ -1957,18 +2100,15 @@ xinit(void) {
        XSetWindowAttributes attrs;
        Cursor cursor;
        Window parent;
-       int sw, sh;
+       int sw, sh, major, minor;
 
        if(!(xw.dpy = XOpenDisplay(NULL)))
                die("Can't open display\n");
        xw.scr = XDefaultScreen(xw.dpy);
+       xw.vis = XDefaultVisual(xw.dpy, xw.scr);
 
        /* font */
-       initfonts(FONT, BOLDFONT, ITALICFONT);
-
-       /* XXX: Assuming same size for bold font */
-       xw.cw = dc.font.rbearing - dc.font.lbearing;
-       xw.ch = dc.font.ascent + dc.font.descent;
+       initfonts((opt_font != NULL)? opt_font : FONT);
 
        /* colors */
        xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
@@ -1993,8 +2133,8 @@ xinit(void) {
                xw.fy = 0;
        }
 
-       attrs.background_pixel = dc.col[DefaultBG];
-       attrs.border_pixel = dc.col[DefaultBG];
+       attrs.background_pixel = dc.xft_col[DefaultBG].pixel;
+       attrs.border_pixel = dc.xft_col[DefaultBG].pixel;
        attrs.bit_gravity = NorthWestGravity;
        attrs.event_mask = FocusChangeMask | KeyPressMask
                | ExposureMask | VisibilityChangeMask | StructureNotifyMask
@@ -2004,12 +2144,18 @@ xinit(void) {
        parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
        xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
                        xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
-                       XDefaultVisual(xw.dpy, xw.scr),
+                       xw.vis,
                        CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
                        | CWColormap,
                        &attrs);
+
+       /* double buffering */
+       if(!XdbeQueryExtension(xw.dpy, &major, &minor))
+               die("Xdbe extension is not present\n");
        xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
 
+       /* Xft rendering context */
+       xw.xft_draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
 
        /* input methods */
        xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
@@ -2036,54 +2182,61 @@ xinit(void) {
 
 void
 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
-       int fg = base.fg, bg = base.bg, temp;
-       int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
-       XFontSet fontset = dc.font.set;
-       int i;
-
-       /* only switch default fg/bg if term is in RV mode */
-       if(IS_SET(MODE_REVERSE)) {
-               if(fg == DefaultFG)
-                       fg = DefaultBG;
-               if(bg == DefaultBG)
-                       bg = DefaultFG;
-       }
+       int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch,
+           width = charlen*xw.cw;
+       Font *font = &dc.font;
+       XGlyphInfo extents;
+       XftColor *fg = &dc.xft_col[base.fg], *bg = &dc.xft_col[base.bg],
+                *temp, revfg, revbg;
+       XRenderColor colfg, colbg;
 
        if(base.mode & ATTR_REVERSE)
                temp = fg, fg = bg, bg = temp;
-
        if(base.mode & ATTR_BOLD) {
-               fg += 8;
-               fontset = dc.bfont.set;
+               fg = &dc.xft_col[base.fg + 8];
+               font = &dc.bfont;
        }
-
        if(base.mode & ATTR_ITALIC)
-               fontset = dc.ifont.set;
-
-       XSetBackground(xw.dpy, dc.gc, dc.col[bg]);
-       XSetForeground(xw.dpy, dc.gc, dc.col[fg]);
-
-       if(base.mode & ATTR_GFX) {
-               for(i = 0; i < bytelen; i++) {
-                       char c = gfx[(uint)s[i] % 256];
-                       if(c)
-                               s[i] = c;
-                       else if(s[i] > 0x5f)
-                               s[i] -= 0x5f;
+               font = &dc.ifont;
+       if(base.mode & (ATTR_ITALIC|ATTR_ITALIC))
+               font = &dc.ibfont;
+
+       if(IS_SET(MODE_REVERSE)) {
+               if(fg == &dc.xft_col[DefaultFG]) {
+                       fg = &dc.xft_col[DefaultBG];
+               } else {
+                       colfg.red = ~fg->color.red;
+                       colfg.green = ~fg->color.green;
+                       colfg.blue = ~fg->color.blue;
+                       colfg.alpha = fg->color.alpha;
+                       XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
+                       fg = &revfg;
+               }
+
+               if(bg == &dc.xft_col[DefaultBG]) {
+                       bg = &dc.xft_col[DefaultFG];
+               } else {
+                       colbg.red = ~bg->color.red;
+                       colbg.green = ~bg->color.green;
+                       colbg.blue = ~bg->color.blue;
+                       colbg.alpha = bg->color.alpha;
+                       XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
+                       bg = &revbg;
                }
        }
 
-       XmbDrawImageString(xw.dpy, xw.buf, fontset, dc.gc, winx, winy, s, bytelen);
+       XftTextExtentsUtf8(xw.dpy, font->xft_set, (FcChar8 *)s, bytelen,
+                       &extents);
+       width = extents.xOff;
 
-       if(base.mode & ATTR_UNDERLINE)
-               XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
-}
+       XftDrawRect(xw.xft_draw, bg, winx, winy, width, xw.ch);
+       XftDrawStringUtf8(xw.xft_draw, fg, font->xft_set, winx,
+                       winy + font->ascent, (FcChar8 *)s, bytelen);
 
-/* copy buffer pixmap to screen pixmap */
-void
-xcopy() {
-       XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
-       XdbeSwapBuffers(xw.dpy, swpinfo, 1);
+       if(base.mode & ATTR_UNDERLINE) {
+               XftDrawRect(xw.xft_draw, fg, winx, winy+1,
+                               width, 1);
+       }
 }
 
 void
@@ -2104,9 +2257,7 @@ xdrawcursor(void) {
                sl = utf8size(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);
-
-       xcopy();
+               xtermclear(oldx, oldy, oldx, oldy);
 
        /* draw the new one */
        if(!(term.c.state & CURSOR_HIDE)) {
@@ -2120,8 +2271,6 @@ xdrawcursor(void) {
                xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
                oldx = term.c.x, oldy = term.c.y;
        }
-
-       xcopy();
 }
 
 void
@@ -2132,16 +2281,20 @@ xresettitle(void) {
 void
 redraw(void) {
        struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
+
+       xclearborders();
        tfulldirt();
        draw();
+       XSync(xw.dpy, False); /* necessary for a good tput flash */
        nanosleep(&tv, NULL);
 }
 
 void
-draw() {
+draw(void) {
+       XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
+
        drawregion(0, 0, term.col, term.row);
-       xcopy();
-       gettimeofday(&xw.lastdraw, NULL);
+       XdbeSwapBuffers(xw.dpy, swpinfo, 1);
 }
 
 void
@@ -2159,7 +2312,7 @@ drawregion(int x1, int y1, int x2, int y2) {
        for(y = y1; y < y2; y++) {
                if(!term.dirty[y])
                        continue;
-               xclear(0, y, term.col, y);
+               xtermclear(0, y, term.col, y);
                term.dirty[y] = 0;
                base = term.line[y][0];
                ic = ib = ox = 0;
@@ -2196,7 +2349,6 @@ expose(XEvent *ev) {
                if(!e->count)
                        xw.state &= ~WIN_REDRAW;
        }
-       xcopy();
 }
 
 void
@@ -2229,7 +2381,6 @@ focus(XEvent *ev) {
                xseturgency(0);
        } else
                xw.state &= ~WIN_FOCUSED;
-       draw();
 }
 
 char*
@@ -2255,6 +2406,8 @@ kpress(XEvent *ev) {
        int shift;
        Status status;
 
+       if (IS_SET(MODE_KBDLOCK))
+               return;
        meta = e->state & Mod1Mask;
        shift = e->state & ShiftMask;
        len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
@@ -2305,7 +2458,6 @@ cmessage(XEvent *e) {
                } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
                        xw.state &= ~WIN_FOCUSED;
                }
-               draw();
        }
 }
 
@@ -2322,47 +2474,48 @@ resize(XEvent *e) {
        row = (xw.h - 2*BORDER) / xw.ch;
        if(col == term.col && row == term.row)
                return;
-       if(tresize(col, row))
-               draw();
-       xresize(col, row);
-       ttyresize(col, row);
-}
 
-bool
-last_draw_too_old(void) {
-       struct timeval now;
-       gettimeofday(&now, NULL);
-       return TIMEDIFF(now, xw.lastdraw) >= DRAW_TIMEOUT/1000;
+       tresize(col, row);
+       xresize(col, row);
+       xclearborders();
+       ttyresize();
 }
 
 void
 run(void) {
        XEvent ev;
        fd_set rfd;
-       int xfd = XConnectionNumber(xw.dpy);
-       struct timeval timeout = {0};
-       bool stuff_to_print = 0;
+       int xfd = XConnectionNumber(xw.dpy), i;
+       struct timeval drawtimeout, *tv = NULL;
 
-       for(;;) {
+       for(i = 0;; i++) {
                FD_ZERO(&rfd);
                FD_SET(cmdfd, &rfd);
                FD_SET(xfd, &rfd);
-               timeout.tv_sec  = 0;
-               timeout.tv_usec = SELECT_TIMEOUT;
-               if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, &timeout) < 0) {
+               if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
                        if(errno == EINTR)
                                continue;
                        die("select failed: %s\n", SERRNO);
                }
-               if(FD_ISSET(cmdfd, &rfd)) {
+
+               /*
+                * Stop after a certain number of reads so the user does not
+                * feel like the system is stuttering.
+                */
+               if(i < 1000 && FD_ISSET(cmdfd, &rfd)) {
                        ttyread();
-                       stuff_to_print = 1;
-               }
 
-               if(stuff_to_print && last_draw_too_old()) {
-                       stuff_to_print = 0;
-                       draw();
+                       /*
+                        * Just wait a bit so it isn't disturbing the
+                        * user and the system is able to write something.
+                        */
+                       drawtimeout.tv_sec = 0;
+                       drawtimeout.tv_usec = 5;
+                       tv = &drawtimeout;
+                       continue;
                }
+               i = 0;
+               tv = NULL;
 
                while(XPending(xw.dpy)) {
                        XNextEvent(xw.dpy, &ev);
@@ -2371,35 +2524,35 @@ run(void) {
                        if(handler[ev.type])
                                (handler[ev.type])(&ev);
                }
+
+               draw();
+               XFlush(xw.dpy);
        }
 }
 
 int
 main(int argc, char *argv[]) {
        int i, bitm, xr, yr;
-       unsigned int wr, hr;
+       uint wr, hr;
 
        xw.fw = xw.fh = xw.fx = xw.fy = 0;
        xw.isfixed = False;
 
        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 'w':
-                       if(++i < argc) opt_embed = argv[i];
-                       break;
-               case 'f':
-                       if(++i < argc) opt_io = argv[i];
+                       if(++i < argc)
+                               opt_class = argv[i];
                        break;
                case 'e':
                        /* eat every remaining arguments */
-                       if(++i < argc) opt_cmd = &argv[i];
+                       if(++i < argc)
+                               opt_cmd = &argv[i];
                        goto run;
+               case 'f':
+                       if(++i < argc)
+                               opt_font = argv[i];
+                       break;
                case 'g':
                        if(++i >= argc)
                                break;
@@ -2421,9 +2574,21 @@ main(int argc, char *argv[]) {
                        if(xw.fh != 0 && xw.fw != 0)
                                xw.isfixed = True;
                        break;
+               case 'o':
+                       if(++i < argc)
+                               opt_io = argv[i];
+                       break;
+               case 't':
+                       if(++i < argc)
+                               opt_title = argv[i];
+                       break;
                case 'v':
                default:
                        die(USAGE);
+               case 'w':
+                       if(++i < argc)
+                               opt_embed = argv[i];
+                       break;
                }
        }