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commit c3118691553b3e4683fa557eadcb742ac1a0f52f
parent 8e2376c42a5c60951e38b128f6f002329cc2bb04
Author: Ivan Tham <ivanthamjunhoe@gmail.com>
Date:   Fri, 29 May 2015 14:18:04 +0800

Add scrollback with shift mouse

Diffstat:
Ast.suckless.org/patches/st-scrollback-shift-mouse.diff | 401+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 401 insertions(+), 0 deletions(-)

diff --git a/st.suckless.org/patches/st-scrollback-shift-mouse.diff b/st.suckless.org/patches/st-scrollback-shift-mouse.diff @@ -0,0 +1,401 @@ +diff --git a/config.def.h b/config.def.h +index bb5596e..cdfad57 100644 +--- a/config.def.h ++++ b/config.def.h +@@ -7,6 +7,7 @@ + */ + static char font[] = "Liberation Mono:pixelsize=12:antialias=false:autohint=false"; + static int borderpx = 2; ++static int histsize = 2000; + static char shell[] = "/bin/sh"; + static char *utmp = NULL; + static char stty_args[] = "stty raw -echo -iexten echonl"; +@@ -106,10 +107,16 @@ static unsigned int defaultunderline = 7; + + /* Internal mouse shortcuts. */ + /* Beware that overloading Button1 will disable the selection. */ +-static Mousekey mshortcuts[] = { ++static Mousekey mkeys[] = { + /* button mask string */ +- { Button4, XK_ANY_MOD, "\031" }, +- { Button5, XK_ANY_MOD, "\005" }, ++ { Button4, XK_NO_MOD, "\031" }, ++ { Button5, XK_NO_MOD, "\005" }, ++}; ++ ++static MouseShortcut mshortcuts[] = { ++ /* button mask function argument */ ++ { Button4, ShiftMask, kscrollup, { .i = 1 } }, ++ { Button5, ShiftMask, kscrolldown, { .i = 1 } }, + }; + + /* Internal keyboard shortcuts. */ +@@ -128,6 +135,8 @@ 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 0c6b9c3..eeb37c9 100644 +--- a/st.c ++++ b/st.c +@@ -83,6 +83,8 @@ 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 { +@@ -231,6 +233,9 @@ 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 */ + bool *dirty; /* dirtyness of lines */ + XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */ + TCursor c; /* cursor */ +@@ -315,6 +320,13 @@ typedef union { + } Arg; + + typedef struct { ++ uint b; ++ uint mask; ++ void (*func)(const Arg *); ++ const Arg arg; ++} MouseShortcut; ++ ++typedef struct { + uint mod; + KeySym keysym; + void (*func)(const Arg *); +@@ -324,6 +336,8 @@ typedef struct { + /* function definitions used in config.h */ + static void clipcopy(const Arg *); + static void clippaste(const Arg *); ++static void kscrolldown(const Arg *); ++static void kscrollup(const Arg *); + static void numlock(const Arg *); + static void selpaste(const Arg *); + static void xzoom(const Arg *); +@@ -395,8 +409,8 @@ 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, bool); ++static void tscrolldown(int, int, bool); + static void tsetattr(int *, int); + static void tsetchar(Rune, Glyph *, int, int); + static void tsetscroll(int, int); +@@ -682,10 +696,10 @@ int + 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; +@@ -744,7 +758,7 @@ 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; +@@ -759,14 +773,14 @@ 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))) +@@ -787,14 +801,14 @@ 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; + } +@@ -891,19 +905,27 @@ void + bpress(XEvent *e) { + struct timespec now; + Mousekey *mk; ++ MouseShortcut *ms; + + if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) { + mousereport(e); + return; + } + +- for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) { ++ for(mk = mkeys; mk < mkeys + LEN(mkeys); mk++) { + if(e->xbutton.button == mk->b + && match(mk->mask, e->xbutton.state)) { + ttysend(mk->s, strlen(mk->s)); + return; + } + } ++ for(ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) { ++ if(e->xbutton.button == ms->b ++ && match(ms->mask, e->xbutton.state)) { ++ ms->func(&ms->arg); ++ return; ++ } ++ } + + if(e->xbutton.button == Button1) { + clock_gettime(CLOCK_MONOTONIC, &now); +@@ -953,13 +975,13 @@ getsel(void) { + linelen = tlinelen(y); + + 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; + +@@ -1362,10 +1384,16 @@ 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++; + } + + void + ttywrite(const char *s, size_t n) { ++ Arg arg = (Arg){ .i = term.scr }; ++ ++ kscrolldown(&arg); ++ + if(xwrite(cmdfd, s, n) == -1) + die("write error on tty: %s\n", strerror(errno)); + } +@@ -1500,13 +1528,52 @@ 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, bool 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); + + for(i = term.bot; i >= orig+n; i--) { +@@ -1519,12 +1586,19 @@ tscrolldown(int orig, int n) { + } + + void +-tscrollup(int orig, int n) { ++tscrollup(int orig, int n, bool 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); + +@@ -1571,7 +1645,7 @@ tnewline(int first_col) { + int y = term.c.y; + + if(y == term.bot) { +- tscrollup(term.top, 1); ++ tscrollup(term.top, 1, true); + } else { + y++; + } +@@ -1728,13 +1802,13 @@ tinsertblank(int n) { + void + tinsertblankline(int n) { + if(BETWEEN(term.c.y, term.top, term.bot)) +- tscrolldown(term.c.y, n); ++ tscrolldown(term.c.y, n, false); + } + + void + tdeleteline(int n) { + if(BETWEEN(term.c.y, term.top, term.bot)) +- tscrollup(term.c.y, n); ++ tscrollup(term.c.y, n, false); + } + + int32_t +@@ -2163,11 +2237,11 @@ csihandle(void) { + break; + case 'S': /* SU -- Scroll <n> line up */ + DEFAULT(csiescseq.arg[0], 1); +- tscrollup(term.top, csiescseq.arg[0]); ++ tscrollup(term.top, csiescseq.arg[0], false); + break; + case 'T': /* SD -- Scroll <n> line down */ + DEFAULT(csiescseq.arg[0], 1); +- tscrolldown(term.top, csiescseq.arg[0]); ++ tscrolldown(term.top, csiescseq.arg[0], false); + break; + case 'L': /* IL -- Insert <n> blank lines */ + DEFAULT(csiescseq.arg[0], 1); +@@ -2617,7 +2691,7 @@ eschandle(uchar ascii) { + return 0; + case 'D': /* IND -- Linefeed */ + if(term.c.y == term.bot) { +- tscrollup(term.top, 1); ++ tscrollup(term.top, 1, true); + } else { + tmoveto(term.c.x, term.c.y+1); + } +@@ -2630,7 +2704,7 @@ eschandle(uchar ascii) { + break; + case 'M': /* RI -- Reverse index */ + if(term.c.y == term.top) { +- tscrolldown(term.top, 1); ++ tscrolldown(term.top, 1, true); + } else { + tmoveto(term.c.x, term.c.y-1); + } +@@ -2791,7 +2865,7 @@ 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); + bool *bp; +@@ -2828,9 +2902,18 @@ 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)); +@@ -3664,11 +3747,11 @@ 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)) +@@ -3688,7 +3771,8 @@ 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