commit d452ac266dd9340cad2e54b78ba4ea64ef0be608
parent ff50fbe7f2a5f821d7e73cffc053b0811ee0b99c
Author: Lorenzo Bracco <devtry@riseup.net>
Date: Mon, 2 Jan 2017 19:50:54 +0100
[st] Update scrollback patch for latest HEAD a719e36
Also, use static variable in config.def.h (like all the rest)
Diffstat:
2 files changed, 381 insertions(+), 1 deletion(-)
diff --git a/st.suckless.org/patches/scrollback.md b/st.suckless.org/patches/scrollback.md
@@ -10,7 +10,7 @@ Download
--------
* [st-scrollback-0.7.diff](st-scrollback-0.7.diff)
-* [st-scrollback-20160924-f739843.diff](st-scrollback-20160924-f739843.diff)
+* [st-scrollback-20170102-a719e36.diff](st-scrollback-20170102-a719e36.diff)
Apply the following patch on top of the previous to allow scrolling
using `Shift+MouseWheel`.
@@ -35,3 +35,4 @@ Authors
* Matthias Schoth - <mschoth@gmail.com> (auto altscreen scrolling)
* Laslo Hunhold - <dev@frign.de> (unscrambling, git port)
* Paride Legovini - <pl@ninthfloor.org> (don't require the Shift modifier when using the auto altscreen scrolling)
+ * Lorenzo Bracco - <devtry@riseup.net> (update base patch, use static variable for config)
diff --git a/st.suckless.org/patches/st-scrollback-20170102-a719e36.diff b/st.suckless.org/patches/st-scrollback-20170102-a719e36.diff
@@ -0,0 +1,379 @@
+diff --git a/config.def.h b/config.def.h
+index a719e36..a070a3b 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -7,6 +7,7 @@
+ */
+ static char font[] = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
+ static int borderpx = 2;
++static unsigned int histsize = 2000;
+
+ /*
+ * What program is execed by st depends of these precedence rules:
+@@ -178,6 +179,8 @@ static Shortcut shortcuts[] = {
+ { MODKEY|ShiftMask, XK_V, clippaste, {.i = 0} },
+ { MODKEY, XK_Num_Lock, numlock, {.i = 0} },
+ { MODKEY, XK_Control_L, iso14755, {.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 fbcd9e0..38256d1 100644
+--- a/st.c
++++ b/st.c
+@@ -87,6 +87,9 @@ 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])
+
+ /* constants */
+ #define ISO14755CMD "dmenu -w %lu -p codepoint: </dev/null"
+@@ -241,7 +244,10 @@ typedef struct {
+ int col; /* nb col */
+ Line *line; /* screen */
+ Line *alt; /* alternate screen */
+- int *dirty; /* dirtyness of lines */
++ 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 */
+ int top; /* top scroll limit */
+@@ -251,7 +257,7 @@ typedef struct {
+ char trantbl[4]; /* charset table translation */
+ int charset; /* current charset */
+ int icharset; /* selected charset for sequence */
+- int numlock; /* lock numbers in keyboard */
++ int numlock; /* lock numbers in keyboard */
+ int *tabs;
+ } Term;
+
+@@ -334,6 +340,8 @@ 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 *);
+@@ -409,8 +417,8 @@ 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);
+@@ -742,10 +750,10 @@ 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;
+@@ -807,7 +815,7 @@ 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;
+@@ -822,14 +830,14 @@ 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)))
+@@ -850,14 +858,14 @@ 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;
+ }
+@@ -1023,13 +1031,13 @@ 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;
+
+@@ -1513,6 +1521,9 @@ ttyread(void)
+ if (buflen > 0)
+ memmove(buf, ptr, buflen);
+
++ if (term.scr > 0 && term.scr < histsize - 1)
++ term.scr++;
++
+ return ret;
+ }
+
+@@ -1522,6 +1533,9 @@ 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.
+@@ -1724,40 +1738,87 @@ 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);
++ LIMIT(n, 0, term.bot - orig + 1);
+
+- tsetdirt(orig, term.bot-n);
+- tclearregion(0, term.bot-n+1, term.col-1, term.bot);
++ 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;
++ }
+
+- for (i = term.bot; i >= orig+n; i--) {
++ tsetdirt(orig, term.bot - n);
++ tclearregion(0, term.bot - n + 1, term.col - 1, term.bot);
++
++ for (i = term.bot; i >= orig + n; i--) {
+ temp = term.line[i];
+- term.line[i] = term.line[i-n];
+- term.line[i-n] = temp;
++ term.line[i] = term.line[i - n];
++ term.line[i - n] = temp;
+ }
+
+ selscroll(orig, 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);
++ 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);
++ tclearregion(0, orig, term.col - 1, orig + n - 1);
++ tsetdirt(orig + n, term.bot);
+
+- for (i = orig; i <= term.bot-n; i++) {
++ for (i = orig; i <= term.bot - n; i++) {
+ temp = term.line[i];
+- term.line[i] = term.line[i+n];
+- term.line[i+n] = temp;
++ term.line[i] = term.line[i + n];
++ term.line[i + n] = temp;
+ }
+
+ selscroll(orig, -n);
+@@ -1799,7 +1860,7 @@ tnewline(int first_col)
+ int y = term.c.y;
+
+ if (y == term.bot) {
+- tscrollup(term.top, 1);
++ tscrollup(term.top, 1, 1);
+ } else {
+ y++;
+ }
+@@ -1964,14 +2025,14 @@ 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
+@@ -2405,11 +2466,11 @@ 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], 0);
+ 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], 0);
+ break;
+ case 'L': /* IL -- Insert <n> blank lines */
+ DEFAULT(csiescseq.arg[0], 1);
+@@ -2945,7 +3006,7 @@ 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);
+ }
+@@ -2958,7 +3019,7 @@ 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);
+ }
+@@ -3145,7 +3206,7 @@ check_control_code:
+ 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;
+@@ -3184,6 +3245,15 @@ tresize(int col, int row)
+ term.alt = xrealloc(term.alt, row * sizeof(Line));
+ term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
+ term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
++ term.hist = xrealloc(term.hist, histsize * sizeof(Line));
++
++ 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++) {
+@@ -4112,11 +4182,11 @@ 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))
+@@ -4136,7 +4206,9 @@ 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
