--- /dev/null
+diff --git a/config.def.h b/config.def.h
+index b41747f..eae969e 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;
++#define histsize 2000
+
+ /*
+ * What program is execed by st depends of these precedence rules:
+@@ -172,6 +173,8 @@ 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 2594c65..233d301 100644
+--- a/st.c
++++ b/st.c
+@@ -86,6 +86,8 @@ 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 {
+@@ -228,26 +230,6 @@ typedef struct {
+ int narg; /* nb of args */
+ } STREscape;
+
+-/* Internal representation of the screen */
+-typedef struct {
+- int row; /* nb row */
+- int col; /* nb col */
+- Line *line; /* screen */
+- Line *alt; /* alternate screen */
+- int *dirty; /* dirtyness of lines */
+- XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
+- TCursor c; /* cursor */
+- int top; /* top scroll limit */
+- int bot; /* bottom scroll limit */
+- int mode; /* terminal mode flags */
+- int esc; /* escape state flags */
+- char trantbl[4]; /* charset table translation */
+- int charset; /* current charset */
+- int icharset; /* selected charset for sequence */
+- int numlock; /* lock numbers in keyboard */
+- int *tabs;
+-} Term;
+-
+ /* Purely graphic info */
+ typedef struct {
+ Display *dpy;
+@@ -327,6 +309,8 @@ 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 *);
+@@ -340,6 +324,29 @@ static void sendbreak(const Arg *);
+ /* Config.h for applying patches and the configuration. */
+ #include "config.h"
+
++/* Internal representation of the screen */
++typedef struct {
++ int row; /* nb row */
++ int col; /* nb col */
++ Line *line; /* screen */
++ Line *alt; /* alternate screen */
++ Line hist[histsize]; /* 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 */
++ int bot; /* bottom scroll limit */
++ int mode; /* terminal mode flags */
++ int esc; /* escape state flags */
++ char trantbl[4]; /* charset table translation */
++ int charset; /* current charset */
++ int icharset; /* selected charset for sequence */
++ int numlock; /* lock numbers in keyboard */
++ int *tabs;
++} Term;
++
+ /* Font structure */
+ typedef struct {
+ int height;
+@@ -399,8 +406,8 @@ 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);
+@@ -731,10 +738,10 @@ 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;
+@@ -796,7 +803,7 @@ 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;
+@@ -811,14 +818,14 @@ 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)))
+@@ -839,14 +846,14 @@ 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;
+ }
+@@ -1012,13 +1019,13 @@ 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;
+
+@@ -1490,6 +1497,9 @@ 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 +1509,9 @@ 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 +1703,53 @@ 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 +1763,20 @@ 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 +1825,7 @@ 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 +1990,14 @@ 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 +2431,11 @@ 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);
+@@ -2871,7 +2931,7 @@ 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 +2944,7 @@ 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 +3107,7 @@ 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;
+@@ -3087,6 +3147,14 @@ tresize(int col, int row)
+ 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));
+@@ -3976,11 +4044,11 @@ 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))
+@@ -4000,7 +4068,8 @@ 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
#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 {
int narg; /* nb of args */
} STREscape;
-/* Internal representation of the screen */
-typedef struct {
- int row; /* nb row */
- int col; /* nb col */
- Line *line; /* screen */
- Line *alt; /* alternate screen */
- int *dirty; /* dirtyness of lines */
- XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
- TCursor c; /* cursor */
- int top; /* top scroll limit */
- int bot; /* bottom scroll limit */
- int mode; /* terminal mode flags */
- int esc; /* escape state flags */
- char trantbl[4]; /* charset table translation */
- int charset; /* current charset */
- int icharset; /* selected charset for sequence */
- int numlock; /* lock numbers in keyboard */
- int *tabs;
-} Term;
-
/* Purely graphic info */
typedef struct {
Display *dpy;
/* 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 *);
/* Config.h for applying patches and the configuration. */
#include "config.h"
+/* Internal representation of the screen */
+typedef struct {
+ int row; /* nb row */
+ int col; /* nb col */
+ Line *line; /* screen */
+ Line *alt; /* alternate screen */
+ Line hist[histsize]; /* 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 */
+ int bot; /* bottom scroll limit */
+ int mode; /* terminal mode flags */
+ int esc; /* escape state flags */
+ char trantbl[4]; /* charset table translation */
+ int charset; /* current charset */
+ int icharset; /* selected charset for sequence */
+ int numlock; /* lock numbers in keyboard */
+ int *tabs;
+} Term;
+
/* Font structure */
typedef struct {
int height;
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);
{
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;
* 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;
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)))
*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;
}
}
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;
/* 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;
}
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.
}
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);
}
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);
int y = term.c.y;
if (y == term.bot) {
- tscrollup(term.top, 1);
+ tscrollup(term.top, 1, 1);
} else {
y++;
}
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
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);
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);
}
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);
}
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;
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));
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))
if (i > 0)
xdrawglyphfontspecs(specs, base, i, ox, y);
}
- xdrawcursor();
+ if (term.scr == 0)
+ xdrawcursor();
}
void
projects / proto / iwe.git / commitdiff