You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
352 lines
8.7 KiB
Diff
352 lines
8.7 KiB
Diff
diff --git a/config.def.h b/config.def.h
|
|
index 6f05dce..93cbcc0 100644
|
|
--- a/config.def.h
|
|
+++ b/config.def.h
|
|
@@ -199,6 +199,8 @@ static Shortcut shortcuts[] = {
|
|
{ TERMMOD, XK_Y, selpaste, {.i = 0} },
|
|
{ ShiftMask, XK_Insert, selpaste, {.i = 0} },
|
|
{ TERMMOD, 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 ebdf360..817cc47 100644
|
|
--- a/st.c
|
|
+++ b/st.c
|
|
@@ -35,6 +35,7 @@
|
|
#define ESC_ARG_SIZ 16
|
|
#define STR_BUF_SIZ ESC_BUF_SIZ
|
|
#define STR_ARG_SIZ ESC_ARG_SIZ
|
|
+#define HISTSIZE 2000
|
|
|
|
/* macros */
|
|
#define IS_SET(flag) ((term.mode & (flag)) != 0)
|
|
@@ -42,6 +43,9 @@
|
|
#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
|
|
#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
|
|
#define ISDELIM(u) (u && wcschr(worddelimiters, u))
|
|
+#define TLINE(y) ((y) < term.scr ? term.hist[((y) + term.histi - \
|
|
+ term.scr + HISTSIZE + 1) % HISTSIZE] : \
|
|
+ term.line[(y) - term.scr])
|
|
|
|
enum term_mode {
|
|
MODE_WRAP = 1 << 0,
|
|
@@ -115,6 +119,9 @@ typedef struct {
|
|
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 */
|
|
TCursor c; /* cursor */
|
|
int ocx; /* old cursor col */
|
|
@@ -184,8 +191,8 @@ static void tnewline(int);
|
|
static void tputtab(int);
|
|
static void tputc(Rune);
|
|
static void treset(void);
|
|
-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(const int *, int);
|
|
static void tsetchar(Rune, const Glyph *, int, int);
|
|
static void tsetdirt(int, int);
|
|
@@ -416,10 +423,10 @@ 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;
|
|
@@ -528,7 +535,7 @@ 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;
|
|
@@ -543,14 +550,14 @@ 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)))
|
|
@@ -571,14 +578,14 @@ 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;
|
|
}
|
|
@@ -609,13 +616,13 @@ 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;
|
|
|
|
@@ -850,6 +857,9 @@ void
|
|
ttywrite(const char *s, size_t n, int may_echo)
|
|
{
|
|
const char *next;
|
|
+ Arg arg = (Arg) { .i = term.scr };
|
|
+
|
|
+ kscrolldown(&arg);
|
|
|
|
if (may_echo && IS_SET(MODE_ECHO))
|
|
twrite(s, n, 1);
|
|
@@ -1061,13 +1071,53 @@ 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);
|
|
|
|
@@ -1077,17 +1127,28 @@ tscrolldown(int orig, int n)
|
|
term.line[i-n] = temp;
|
|
}
|
|
|
|
- selscroll(orig, n);
|
|
+ if (term.scr == 0)
|
|
+ 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);
|
|
|
|
+ if (copyhist) {
|
|
+ term.histi = (term.histi + 1) % HISTSIZE;
|
|
+ temp = term.hist[term.histi];
|
|
+ term.hist[term.histi] = term.line[orig];
|
|
+ term.line[orig] = temp;
|
|
+ }
|
|
+
|
|
+ if (term.scr > 0 && term.scr < HISTSIZE)
|
|
+ term.scr = MIN(term.scr + n, HISTSIZE-1);
|
|
+
|
|
tclearregion(0, orig, term.col-1, orig+n-1);
|
|
tsetdirt(orig+n, term.bot);
|
|
|
|
@@ -1097,7 +1158,8 @@ tscrollup(int orig, int n)
|
|
term.line[i+n] = temp;
|
|
}
|
|
|
|
- selscroll(orig, -n);
|
|
+ if (term.scr == 0)
|
|
+ selscroll(orig, -n);
|
|
}
|
|
|
|
void
|
|
@@ -1126,7 +1188,7 @@ tnewline(int first_col)
|
|
int y = term.c.y;
|
|
|
|
if (y == term.bot) {
|
|
- tscrollup(term.top, 1);
|
|
+ tscrollup(term.top, 1, 1);
|
|
} else {
|
|
y++;
|
|
}
|
|
@@ -1291,14 +1353,14 @@ 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
|
|
@@ -1735,11 +1797,11 @@ 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);
|
|
@@ -2251,7 +2313,7 @@ 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);
|
|
}
|
|
@@ -2264,7 +2326,7 @@ 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);
|
|
}
|
|
@@ -2474,7 +2536,7 @@ twrite(const char *buf, int buflen, int show_ctrl)
|
|
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;
|
|
@@ -2511,6 +2573,14 @@ 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));
|
|
@@ -2569,7 +2639,7 @@ drawregion(int x1, int y1, int x2, int y2)
|
|
continue;
|
|
|
|
term.dirty[y] = 0;
|
|
- xdrawline(term.line[y], x1, y, x2);
|
|
+ xdrawline(TLINE(y), x1, y, x2);
|
|
}
|
|
}
|
|
|
|
@@ -2590,8 +2660,9 @@ draw(void)
|
|
cx--;
|
|
|
|
drawregion(0, 0, term.col, term.row);
|
|
- xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
|
|
- term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
|
|
+ if (term.scr == 0)
|
|
+ xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
|
|
+ term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
|
|
term.ocx = cx;
|
|
term.ocy = term.c.y;
|
|
xfinishdraw();
|
|
diff --git a/st.h b/st.h
|
|
index fa2eddf..adda2db 100644
|
|
--- a/st.h
|
|
+++ b/st.h
|
|
@@ -81,6 +81,8 @@ void die(const char *, ...);
|
|
void redraw(void);
|
|
void draw(void);
|
|
|
|
+void kscrolldown(const Arg *);
|
|
+void kscrollup(const Arg *);
|
|
void printscreen(const Arg *);
|
|
void printsel(const Arg *);
|
|
void sendbreak(const Arg *);
|