diff --git a/config.def.h b/config.def.h index fd09d72..273fbcd 100644 --- a/config.def.h +++ b/config.def.h @@ -7,6 +7,7 @@ */ static char font[] = "Liberation Mono:pixelsize:antialias=true:autohint=true"; static int borderpx = 2; +static int histsize = 2000; /* * What program is execed by st depends of these precedence rules: @@ -136,8 +137,14 @@ static unsigned int defaultunderline = 7; */ static MouseShortcut mshortcuts[] = { /* button mask string */ - { Button4, XK_ANY_MOD, "\031" }, - { Button5, XK_ANY_MOD, "\005" }, + { Button4, XK_NO_MOD, "\031" }, + { Button5, XK_NO_MOD, "\005" }, +}; + +static MouseKey mkeys[] = { + /* button mask function argument */ + { Button4, ShiftMask, kscrollup, {.i = 1} }, + { Button5, ShiftMask, kscrolldown, {.i = 1} }, }; /* Internal keyboard shortcuts. */ @@ -157,6 +164,8 @@ static Shortcut shortcuts[] = { { MODKEY|ShiftMask, XK_C, clipcopy, {.i = 0} }, { MODKEY|ShiftMask, XK_V, clippaste, {.i = 0} }, { MODKEY, XK_Num_Lock, numlock, {.i = 0} }, + { ShiftMask, XK_Page_Up, kscrollup, {.i = -1} }, + { ShiftMask, XK_Page_Down, kscrolldown, {.i = -1} }, }; /* diff --git a/st.c b/st.c index a47f094..8b7a364 100644 --- a/st.c +++ b/st.c @@ -85,6 +85,8 @@ char *argv0; #define TRUERED(x) (((x) & 0xff0000) >> 8) #define TRUEGREEN(x) (((x) & 0xff00)) #define TRUEBLUE(x) (((x) & 0xff) << 8) +#define TLINE(y) ((y) < term.scr ? term.hist[((y) + term.histi - term.scr \ + + histsize + 1) % histsize] : term.line[(y) - term.scr]) enum glyph_attribute { @@ -233,6 +235,9 @@ typedef struct { int col; /* nb col */ Line *line; /* screen */ Line *alt; /* alternate screen */ + Line *hist; /* history buffer */ + int histi; /* history index */ + int scr; /* scroll back */ int *dirty; /* dirtyness of lines */ XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */ TCursor c; /* cursor */ @@ -317,6 +322,13 @@ typedef union { } Arg; typedef struct { + uint b; + uint mask; + void (*func)(const Arg *); + const Arg arg; +} MouseKey; + +typedef struct { uint mod; KeySym keysym; void (*func)(const Arg *); @@ -324,6 +336,8 @@ typedef struct { } Shortcut; /* function definitions used in config.h */ +static void kscrolldown(const Arg *); +static void kscrollup(const Arg *); static void clipcopy(const Arg *); static void clippaste(const Arg *); static void numlock(const Arg *); @@ -398,8 +412,8 @@ static void tputtab(int); static void tputc(Rune); static void treset(void); static void tresize(int, int); -static void tscrollup(int, int); -static void tscrolldown(int, int); +static void tscrollup(int, int, int); +static void tscrolldown(int, int, int); static void tsetattr(int *, int); static void tsetchar(Rune, Glyph *, int, int); static void tsetscroll(int, int); @@ -730,10 +744,10 @@ tlinelen(int y) { int i = term.col; - if (term.line[y][i - 1].mode & ATTR_WRAP) + if (TLINE(y)[i - 1].mode & ATTR_WRAP) return i; - while (i > 0 && term.line[y][i - 1].u = ' ') + while (i > 0 && TLINE(y)[i - 1].u = ' ') --i; return i; @@ -795,7 +809,7 @@ selsnap(int *x, int *y, int direction) * Snap around if the word wraps around at the end or * beginning of a line. */ - prevgp = &term.line[*y][*x]; + prevgp = &TLINE(*y)[*x]; prevdelim = ISDELIM(prevgp->u); for (;;) { newx = *x + direction; @@ -810,14 +824,14 @@ selsnap(int *x, int *y, int direction) yt = *y, xt = *x; else yt = newy, xt = newx; - if (!(term.line[yt][xt].mode & ATTR_WRAP)) + if (!(TLINE(yt)[xt].mode & ATTR_WRAP)) break; } if (newx >= tlinelen(newy)) break; - gp = &term.line[newy][newx]; + gp = &TLINE(newy)[newx]; delim = ISDELIM(gp->u); if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim || (delim && gp->u != prevgp->u))) @@ -838,14 +852,14 @@ selsnap(int *x, int *y, int direction) *x = (direction < 0) ? 0 : term.col - 1; if (direction < 0) { for (; *y > 0; *y += direction) { - if (!(term.line[*y-1][term.col-1].mode + if (!(TLINE(*y-1)[term.col-1].mode & ATTR_WRAP)) { break; } } } else if (direction > 0) { for (; *y < term.row-1; *y += direction) { - if (!(term.line[*y][term.col-1].mode + if (!(TLINE(*y)[term.col-1].mode & ATTR_WRAP)) { break; } @@ -945,6 +959,7 @@ bpress(XEvent *e) { struct timespec now; MouseShortcut *ms; + MouseKey *mk; if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) { mousereport(e); @@ -959,6 +974,14 @@ bpress(XEvent *e) } } + for (mk = mkeys; mk < mkeys + LEN(mkeys); mk++) { + if (e->xbutton.button = mk->b + && match(mk->mask, e->xbutton.state)) { + mk->func(&mk->arg); + return; + } + } + if (e->xbutton.button = Button1) { clock_gettime(CLOCK_MONOTONIC, &now); @@ -1011,13 +1034,13 @@ getsel(void) } if (sel.type = SEL_RECTANGULAR) { - gp = &term.line[y][sel.nb.x]; + gp = &TLINE(y)[sel.nb.x]; lastx = sel.ne.x; } else { - gp = &term.line[y][sel.nb.y = y ? sel.nb.x : 0]; + gp = &TLINE(y)[sel.nb.y = y ? sel.nb.x : 0]; lastx = (sel.ne.y = y) ? sel.ne.x : term.col-1; } - last = &term.line[y][MIN(lastx, linelen-1)]; + last = &TLINE(y)[MIN(lastx, linelen-1)]; while (last >= gp && last->u = ' ') --last; @@ -1489,6 +1512,9 @@ ttyread(void) /* keep any uncomplete utf8 char for the next call */ memmove(buf, ptr, buflen); + if (term.scr > 0 && term.scr < histsize-1) + term.scr++; + return ret; } @@ -1499,6 +1525,9 @@ ttywrite(const char *s, size_t n) fd_set wfd, rfd; ssize_t r; size_t lim = 256; + Arg arg = (Arg){ .i = term.scr }; + + kscrolldown(&arg); /* * Remember that we are using a pty, which might be a modem line. @@ -1690,13 +1719,53 @@ tswapscreen(void) } void -tscrolldown(int orig, int n) +kscrolldown(const Arg* a) +{ + int n = a->i; + + if (n < 0) + n = term.row + n; + + if (n > term.scr) + n = term.scr; + + if (term.scr > 0) { + term.scr -= n; + selscroll(0, -n); + tfulldirt(); + } +} + +void +kscrollup(const Arg* a) +{ + int n = a->i; + + if (n < 0) + n = term.row + n; + + if (term.scr <= histsize - n) { + term.scr += n; + selscroll(0, n); + tfulldirt(); + } +} + +void +tscrolldown(int orig, int n, int copyhist) { int i; Line temp; LIMIT(n, 0, term.bot-orig+1); + if (copyhist) { + term.histi = (term.histi - 1 + histsize) % histsize; + temp = term.hist[term.histi]; + term.hist[term.histi] = term.line[term.bot]; + term.line[term.bot] = temp; + } + tsetdirt(orig, term.bot-n); tclearregion(0, term.bot-n+1, term.col-1, term.bot); @@ -1710,13 +1779,20 @@ tscrolldown(int orig, int n) } void -tscrollup(int orig, int n) +tscrollup(int orig, int n, int copyhist) { int i; Line temp; LIMIT(n, 0, term.bot-orig+1); + if (copyhist) { + term.histi = (term.histi + 1) % histsize; + temp = term.hist[term.histi]; + term.hist[term.histi] = term.line[orig]; + term.line[orig] = temp; + } + tclearregion(0, orig, term.col-1, orig+n-1); tsetdirt(orig+n, term.bot); @@ -1765,7 +1841,7 @@ tnewline(int first_col) int y = term.c.y; if (y = term.bot) { - tscrollup(term.top, 1); + tscrollup(term.top, 1, 1); } else { y++; } @@ -1930,14 +2006,14 @@ void tinsertblankline(int n) { if (BETWEEN(term.c.y, term.top, term.bot)) - tscrolldown(term.c.y, n); + tscrolldown(term.c.y, n, 0); } void tdeleteline(int n) { if (BETWEEN(term.c.y, term.top, term.bot)) - tscrollup(term.c.y, n); + tscrollup(term.c.y, n, 0); } int32_t @@ -2371,11 +2447,11 @@ csihandle(void) break; case 'S': /* SU -- Scroll line up */ DEFAULT(csiescseq.arg[0], 1); - tscrollup(term.top, csiescseq.arg[0]); + tscrollup(term.top, csiescseq.arg[0], 0); break; case 'T': /* SD -- Scroll line down */ DEFAULT(csiescseq.arg[0], 1); - tscrolldown(term.top, csiescseq.arg[0]); + tscrolldown(term.top, csiescseq.arg[0], 0); break; case 'L': /* IL -- Insert blank lines */ DEFAULT(csiescseq.arg[0], 1); @@ -2871,7 +2947,7 @@ eschandle(uchar ascii) return 0; case 'D': /* IND -- Linefeed */ if (term.c.y = term.bot) { - tscrollup(term.top, 1); + tscrollup(term.top, 1, 1); } else { tmoveto(term.c.x, term.c.y+1); } @@ -2884,7 +2960,7 @@ eschandle(uchar ascii) break; case 'M': /* RI -- Reverse index */ if (term.c.y = term.top) { - tscrolldown(term.top, 1); + tscrolldown(term.top, 1, 1); } else { tmoveto(term.c.x, term.c.y-1); } @@ -3047,7 +3123,7 @@ tputc(Rune u) void tresize(int col, int row) { - int i; + int i, j; int minrow = MIN(row, term.row); int mincol = MIN(col, term.col); int *bp; @@ -3084,9 +3160,18 @@ tresize(int col, int row) /* resize to new height */ term.line = xrealloc(term.line, row * sizeof(Line)); term.alt = xrealloc(term.alt, row * sizeof(Line)); + term.hist = xrealloc(term.hist, histsize * sizeof(Line)); term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty)); term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs)); + for (i = 0; i < histsize; i++) { + term.hist[i] = xrealloc(term.hist[i], col * sizeof(Glyph)); + for (j = mincol; j < col; j++) { + term.hist[i][j] = term.c.attr; + term.hist[i][j].u = ' '; + } + } + /* resize each row to new width, zero-pad if needed */ for (i = 0; i < minrow; i++) { term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph)); @@ -3984,11 +4069,11 @@ drawregion(int x1, int y1, int x2, int y2) term.dirty[y] = 0; specs = term.specbuf; - numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y); + numspecs = xmakeglyphfontspecs(specs, &TLINE(y)[x1], x2 - x1, x1, y); i = ox = 0; for (x = x1; x < x2 && i < numspecs; x++) { - new = term.line[y][x]; + new = TLINE(y)[x]; if (new.mode = ATTR_WDUMMY) continue; if (ena_sel && selected(x, y)) @@ -4008,7 +4093,8 @@ drawregion(int x1, int y1, int x2, int y2) if (i > 0) xdrawglyphfontspecs(specs, base, i, ox, y); } - xdrawcursor(); + if (term.scr = 0) + xdrawcursor(); } void