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Added scrollback support.

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This commit is contained in:
CronyAkatsuki 2023-03-04 13:37:48 +01:00
parent cd0e6f6e3a
commit 15a25acf1d
9 changed files with 605 additions and 27 deletions
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5
config.def.h
View File

@ -186,8 +186,11 @@ static uint forcemousemod = ShiftMask;
* Internal mouse shortcuts. * Internal mouse shortcuts.
* Beware that overloading Button1 will disable the selection. * Beware that overloading Button1 will disable the selection.
*/ */
const unsigned int mousescrollincrement = 1;
static MouseShortcut mshortcuts[] = { static MouseShortcut mshortcuts[] = {
/* mask button function argument release */ /* mask button function argument release */
{ XK_ANY_MOD, Button4, kscrollup, {.i = 1}, 0, /* !alt */ -1 },
{ XK_ANY_MOD, Button5, kscrolldown, {.i = 1}, 0, /* !alt */ -1 },
{ XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 }, { XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 },
{ ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} }, { ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} },
{ XK_ANY_MOD, Button4, ttysend, {.s = "\031"} }, { XK_ANY_MOD, Button4, ttysend, {.s = "\031"} },
@ -213,6 +216,8 @@ static Shortcut shortcuts[] = {
{ TERMMOD, XK_Y, selpaste, {.i = 0} }, { TERMMOD, XK_Y, selpaste, {.i = 0} },
{ ShiftMask, XK_Insert, selpaste, {.i = 0} }, { ShiftMask, XK_Insert, selpaste, {.i = 0} },
{ TERMMOD, XK_Num_Lock, numlock, {.i = 0} }, { TERMMOD, XK_Num_Lock, numlock, {.i = 0} },
{ ShiftMask, XK_Page_Up, kscrollup, {.i = -1} },
{ ShiftMask, XK_Page_Down, kscrolldown, {.i = -1} },
}; };
/* /*

5
config.h
View File

@ -182,8 +182,11 @@ static uint forcemousemod = ShiftMask;
* Internal mouse shortcuts. * Internal mouse shortcuts.
* Beware that overloading Button1 will disable the selection. * Beware that overloading Button1 will disable the selection.
*/ */
const unsigned int mousescrollincrement = 3;
static MouseShortcut mshortcuts[] = { static MouseShortcut mshortcuts[] = {
/* mask button function argument release */ /* mask button function argument release */
{ XK_ANY_MOD, Button4, kscrollup, {.i = mousescrollincrement}, 0, /* !alt */ -1 },
{ XK_ANY_MOD, Button5, kscrolldown, {.i = mousescrollincrement}, 0, /* !alt */ -1 },
{ XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 }, { XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 },
{ ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} }, { ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} },
{ XK_ANY_MOD, Button4, ttysend, {.s = "\031"} }, { XK_ANY_MOD, Button4, ttysend, {.s = "\031"} },
@ -209,6 +212,8 @@ static Shortcut shortcuts[] = {
{ TERMMOD, XK_Y, selpaste, {.i = 0} }, { TERMMOD, XK_Y, selpaste, {.i = 0} },
{ ShiftMask, XK_Insert, selpaste, {.i = 0} }, { ShiftMask, XK_Insert, selpaste, {.i = 0} },
{ TERMMOD, XK_Num_Lock, numlock, {.i = 0} }, { TERMMOD, XK_Num_Lock, numlock, {.i = 0} },
{ ShiftMask, XK_Page_Up, kscrollup, {.i = -1} },
{ ShiftMask, XK_Page_Down, kscrolldown, {.i = -1} },
}; };
/* /*

350
patches/st-scrollback-0.8.5.diff Normal file
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@ -0,0 +1,350 @@
diff --git a/config.def.h b/config.def.h
index 91ab8ca..e3b469b 100644
--- a/config.def.h
+++ b/config.def.h
@@ -201,6 +201,8 @@ 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 51049ba..cd750f2 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;
@@ -851,6 +858,9 @@ 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);
@@ -1062,12 +1072,52 @@ 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, 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);
@@ -1078,17 +1128,28 @@ 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);
@@ -1098,7 +1159,8 @@ tscrollup(int orig, int n)
term.line[i+n] = temp;
}
- selscroll(orig, -n);
+ if (term.scr == 0)
+ selscroll(orig, -n);
}
void
@@ -1127,7 +1189,7 @@ tnewline(int first_col)
int y = term.c.y;
if (y == term.bot) {
- tscrollup(term.top, 1);
+ tscrollup(term.top, 1, 1);
} else {
y++;
}
@@ -1292,14 +1354,14 @@ 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
@@ -1736,11 +1798,11 @@ 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);
@@ -2330,7 +2392,7 @@ 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);
}
@@ -2343,7 +2405,7 @@ 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);
}
@@ -2557,7 +2619,7 @@ 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;
@@ -2594,6 +2656,14 @@ 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));
@@ -2652,7 +2722,7 @@ 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);
}
}
@@ -2673,8 +2743,9 @@ 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 519b9bd..da36b34 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 *);

25
patches/st-scrollback-mouse-20220127-2c5edf2.diff Normal file
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@ -0,0 +1,25 @@
From b5d3351a21442a842e01e8c0317603b6890b379c Mon Sep 17 00:00:00 2001
From: asparagii <michele.lambertucci1@gmail.com>
Date: Thu, 27 Jan 2022 15:44:02 +0100
Subject: [PATCH] st-scrollback-mouse
---
config.def.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/config.def.h b/config.def.h
index e3b469b..c217315 100644
--- a/config.def.h
+++ b/config.def.h
@@ -176,6 +176,8 @@ static uint forcemousemod = ShiftMask;
*/
static MouseShortcut mshortcuts[] = {
/* mask button function argument release */
+ { ShiftMask, Button4, kscrollup, {.i = 1} },
+ { ShiftMask, Button5, kscrolldown, {.i = 1} },
{ XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 },
{ ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} },
{ XK_ANY_MOD, Button4, ttysend, {.s = "\031"} },
--
2.34.1

78
patches/st-scrollback-mouse-altscreen-20220127-2c5edf2.diff Normal file
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@ -0,0 +1,78 @@
From 580e3f386e9215707100e9ba44797701943fd927 Mon Sep 17 00:00:00 2001
From: asparagii <michele.lambertucci1@gmail.com>
Date: Thu, 27 Jan 2022 15:49:27 +0100
Subject: [PATCH] st-scrollback-mouse-altscreen
---
config.def.h | 4 ++--
st.c | 5 +++++
st.h | 1 +
x.c | 2 ++
4 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/config.def.h b/config.def.h
index c217315..c223706 100644
--- a/config.def.h
+++ b/config.def.h
@@ -176,8 +176,8 @@ static uint forcemousemod = ShiftMask;
*/
static MouseShortcut mshortcuts[] = {
/* mask button function argument release */
- { ShiftMask, Button4, kscrollup, {.i = 1} },
- { ShiftMask, Button5, kscrolldown, {.i = 1} },
+ { XK_ANY_MOD, Button4, kscrollup, {.i = 1}, 0, /* !alt */ -1 },
+ { XK_ANY_MOD, Button5, kscrolldown, {.i = 1}, 0, /* !alt */ -1 },
{ XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 },
{ ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} },
{ XK_ANY_MOD, Button4, ttysend, {.s = "\031"} },
diff --git a/st.c b/st.c
index f3af82b..876a6bf 100644
--- a/st.c
+++ b/st.c
@@ -1060,6 +1060,11 @@ tnew(int col, int row)
treset();
}
+int tisaltscr(void)
+{
+ return IS_SET(MODE_ALTSCREEN);
+}
+
void
tswapscreen(void)
{
diff --git a/st.h b/st.h
index da36b34..e95c6f8 100644
--- a/st.h
+++ b/st.h
@@ -89,6 +89,7 @@ void sendbreak(const Arg *);
void toggleprinter(const Arg *);
int tattrset(int);
+int tisaltscr(void);
void tnew(int, int);
void tresize(int, int);
void tsetdirtattr(int);
diff --git a/x.c b/x.c
index cd96575..9274556 100644
--- a/x.c
+++ b/x.c
@@ -34,6 +34,7 @@ typedef struct {
void (*func)(const Arg *);
const Arg arg;
uint release;
+ int altscrn; /* 0: don't care, -1: not alt screen, 1: alt screen */
} MouseShortcut;
typedef struct {
@@ -455,6 +456,7 @@ mouseaction(XEvent *e, uint release)
for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
if (ms->release == release &&
ms->button == e->xbutton.button &&
+ (!ms->altscrn || (ms->altscrn == (tisaltscr() ? 1 : -1))) &&
(match(ms->mod, state) || /* exact or forced */
match(ms->mod, state & ~forcemousemod))) {
ms->func(&(ms->arg));
--
2.34.1

34
patches/st-scrollback-mouse-increment-0.8.2.diff Normal file
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@ -0,0 +1,34 @@
From 63e717e51dcd2f59c7a3aa75b659926aa92e08f3 Mon Sep 17 00:00:00 2001
From: Jacob Louis Prosser <geriatricjacob@cumallover.me>
Date: Mon, 5 Aug 2019 18:20:25 +1000
Subject: [st] [patch] Exposed variable to easily change mouse scroll increment.
---
config.def.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/config.def.h b/config.def.h
index ad20c4c..47e4b66 100644
--- a/config.def.h
+++ b/config.def.h
@@ -154,6 +154,7 @@ static unsigned int defaultattr = 11;
* Internal mouse shortcuts.
* Beware that overloading Button1 will disable the selection.
*/
+const unsigned int mousescrollincrement = 1;
static MouseShortcut mshortcuts[] = {
/* button mask string */
{ Button4, XK_NO_MOD, "\031" },
@@ -162,8 +163,8 @@ static MouseShortcut mshortcuts[] = {
MouseKey mkeys[] = {
/* button mask function argument */
- { Button4, ShiftMask, kscrollup, {.i = 1} },
- { Button5, ShiftMask, kscrolldown, {.i = 1} },
+ { Button4, ShiftMask, kscrollup, {.i = mousescrollincrement} },
+ { Button5, ShiftMask, kscrolldown, {.i = mousescrollincrement} },
};
/* Internal keyboard shortcuts. */
--
2.22.0

122
st.c
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@ -35,6 +35,7 @@
#define ESC_ARG_SIZ 16 #define ESC_ARG_SIZ 16
#define STR_BUF_SIZ ESC_BUF_SIZ #define STR_BUF_SIZ ESC_BUF_SIZ
#define STR_ARG_SIZ ESC_ARG_SIZ #define STR_ARG_SIZ ESC_ARG_SIZ
#define HISTSIZE 2000
/* macros */ /* macros */
#define IS_SET(flag) ((term.mode & (flag)) != 0) #define IS_SET(flag) ((term.mode & (flag)) != 0)
@ -42,6 +43,9 @@
#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f)) #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c)) #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
#define ISDELIM(u) (u && wcschr(worddelimiters, u)) #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 { enum term_mode {
MODE_WRAP = 1 << 0, MODE_WRAP = 1 << 0,
@ -115,6 +119,9 @@ typedef struct {
int col; /* nb col */ int col; /* nb col */
Line *line; /* screen */ Line *line; /* screen */
Line *alt; /* alternate screen */ Line *alt; /* alternate screen */
Line hist[HISTSIZE]; /* history buffer */
int histi; /* history index */
int scr; /* scroll back */
int *dirty; /* dirtyness of lines */ int *dirty; /* dirtyness of lines */
TCursor c; /* cursor */ TCursor c; /* cursor */
int ocx; /* old cursor col */ int ocx; /* old cursor col */
@ -185,8 +192,8 @@ static void tnewline(int);
static void tputtab(int); static void tputtab(int);
static void tputc(Rune); static void tputc(Rune);
static void treset(void); static void treset(void);
static void tscrollup(int, int); static void tscrollup(int, int, int);
static void tscrolldown(int, int); static void tscrolldown(int, int, int);
static void tsetattr(const int *, int); static void tsetattr(const int *, int);
static void tsetchar(Rune, const Glyph *, int, int); static void tsetchar(Rune, const Glyph *, int, int);
static void tsetdirt(int, int); static void tsetdirt(int, int);
@ -409,10 +416,10 @@ tlinelen(int y)
{ {
int i = term.col; int i = term.col;
if (term.line[y][i - 1].mode & ATTR_WRAP) if (TLINE(y)[i - 1].mode & ATTR_WRAP)
return i; return i;
while (i > 0 && term.line[y][i - 1].u == ' ') while (i > 0 && TLINE(y)[i - 1].u == ' ')
--i; --i;
return i; return i;
@ -521,7 +528,7 @@ selsnap(int *x, int *y, int direction)
* Snap around if the word wraps around at the end or * Snap around if the word wraps around at the end or
* beginning of a line. * beginning of a line.
*/ */
prevgp = &term.line[*y][*x]; prevgp = &TLINE(*y)[*x];
prevdelim = ISDELIM(prevgp->u); prevdelim = ISDELIM(prevgp->u);
for (;;) { for (;;) {
newx = *x + direction; newx = *x + direction;
@ -536,14 +543,14 @@ selsnap(int *x, int *y, int direction)
yt = *y, xt = *x; yt = *y, xt = *x;
else else
yt = newy, xt = newx; yt = newy, xt = newx;
if (!(term.line[yt][xt].mode & ATTR_WRAP)) if (!(TLINE(yt)[xt].mode & ATTR_WRAP))
break; break;
} }
if (newx >= tlinelen(newy)) if (newx >= tlinelen(newy))
break; break;
gp = &term.line[newy][newx]; gp = &TLINE(newy)[newx];
delim = ISDELIM(gp->u); delim = ISDELIM(gp->u);
if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
|| (delim && gp->u != prevgp->u))) || (delim && gp->u != prevgp->u)))
@ -564,14 +571,14 @@ selsnap(int *x, int *y, int direction)
*x = (direction < 0) ? 0 : term.col - 1; *x = (direction < 0) ? 0 : term.col - 1;
if (direction < 0) { if (direction < 0) {
for (; *y > 0; *y += direction) { for (; *y > 0; *y += direction) {
if (!(term.line[*y-1][term.col-1].mode if (!(TLINE(*y-1)[term.col-1].mode
& ATTR_WRAP)) { & ATTR_WRAP)) {
break; break;
} }
} }
} else if (direction > 0) { } else if (direction > 0) {
for (; *y < term.row-1; *y += direction) { for (; *y < term.row-1; *y += direction) {
if (!(term.line[*y][term.col-1].mode if (!(TLINE(*y)[term.col-1].mode
& ATTR_WRAP)) { & ATTR_WRAP)) {
break; break;
} }
@ -602,13 +609,13 @@ getsel(void)
} }
if (sel.type == SEL_RECTANGULAR) { if (sel.type == SEL_RECTANGULAR) {
gp = &term.line[y][sel.nb.x]; gp = &TLINE(y)[sel.nb.x];
lastx = sel.ne.x; lastx = sel.ne.x;
} else { } 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; 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 == ' ') while (last >= gp && last->u == ' ')
--last; --last;
@ -844,6 +851,9 @@ void
ttywrite(const char *s, size_t n, int may_echo) ttywrite(const char *s, size_t n, int may_echo)
{ {
const char *next; const char *next;
Arg arg = (Arg) { .i = term.scr };
kscrolldown(&arg);
if (may_echo && IS_SET(MODE_ECHO)) if (may_echo && IS_SET(MODE_ECHO))
twrite(s, n, 1); twrite(s, n, 1);
@ -1043,6 +1053,11 @@ tnew(int col, int row)
treset(); treset();
} }
int tisaltscr(void)
{
return IS_SET(MODE_ALTSCREEN);
}
void void
tswapscreen(void) tswapscreen(void)
{ {
@ -1055,12 +1070,52 @@ tswapscreen(void)
} }
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; int i;
Line temp; Line temp;
LIMIT(n, 0, term.bot-orig+1); 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); tsetdirt(orig, term.bot-n);
tclearregion(0, term.bot-n+1, term.col-1, term.bot); tclearregion(0, term.bot-n+1, term.col-1, term.bot);
@ -1071,17 +1126,28 @@ tscrolldown(int orig, int n)
term.line[i-n] = temp; term.line[i-n] = temp;
} }
if (term.scr == 0)
selscroll(orig, n); selscroll(orig, n);
} }
void void
tscrollup(int orig, int n) tscrollup(int orig, int n, int copyhist)
{ {
int i; int i;
Line temp; 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;
}
if (term.scr > 0 && term.scr < HISTSIZE)
term.scr = MIN(term.scr + n, HISTSIZE-1);
tclearregion(0, orig, term.col-1, orig+n-1); tclearregion(0, orig, term.col-1, orig+n-1);
tsetdirt(orig+n, term.bot); tsetdirt(orig+n, term.bot);
@ -1091,6 +1157,7 @@ tscrollup(int orig, int n)
term.line[i+n] = temp; term.line[i+n] = temp;
} }
if (term.scr == 0)
selscroll(orig, -n); selscroll(orig, -n);
} }
@ -1120,7 +1187,7 @@ tnewline(int first_col)
int y = term.c.y; int y = term.c.y;
if (y == term.bot) { if (y == term.bot) {
tscrollup(term.top, 1); tscrollup(term.top, 1, 1);
} else { } else {
y++; y++;
} }
@ -1288,14 +1355,14 @@ void
tinsertblankline(int n) tinsertblankline(int n)
{ {
if (BETWEEN(term.c.y, term.top, term.bot)) if (BETWEEN(term.c.y, term.top, term.bot))
tscrolldown(term.c.y, n); tscrolldown(term.c.y, n, 0);
} }
void void
tdeleteline(int n) tdeleteline(int n)
{ {
if (BETWEEN(term.c.y, term.top, term.bot)) if (BETWEEN(term.c.y, term.top, term.bot))
tscrollup(term.c.y, n); tscrollup(term.c.y, n, 0);
} }
int32_t int32_t
@ -1732,11 +1799,11 @@ csihandle(void)
break; break;
case 'S': /* SU -- Scroll <n> line up */ case 'S': /* SU -- Scroll <n> line up */
DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[0], 1);
tscrollup(term.top, csiescseq.arg[0]); tscrollup(term.top, csiescseq.arg[0], 0);
break; break;
case 'T': /* SD -- Scroll <n> line down */ case 'T': /* SD -- Scroll <n> line down */
DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[0], 1);
tscrolldown(term.top, csiescseq.arg[0]); tscrolldown(term.top, csiescseq.arg[0], 0);
break; break;
case 'L': /* IL -- Insert <n> blank lines */ case 'L': /* IL -- Insert <n> blank lines */
DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[0], 1);
@ -2308,7 +2375,7 @@ eschandle(uchar ascii)
return 0; return 0;
case 'D': /* IND -- Linefeed */ case 'D': /* IND -- Linefeed */
if (term.c.y == term.bot) { if (term.c.y == term.bot) {
tscrollup(term.top, 1); tscrollup(term.top, 1, 1);
} else { } else {
tmoveto(term.c.x, term.c.y+1); tmoveto(term.c.x, term.c.y+1);
} }
@ -2321,7 +2388,7 @@ eschandle(uchar ascii)
break; break;
case 'M': /* RI -- Reverse index */ case 'M': /* RI -- Reverse index */
if (term.c.y == term.top) { if (term.c.y == term.top) {
tscrolldown(term.top, 1); tscrolldown(term.top, 1, 1);
} else { } else {
tmoveto(term.c.x, term.c.y-1); tmoveto(term.c.x, term.c.y-1);
} }
@ -2538,7 +2605,7 @@ twrite(const char *buf, int buflen, int show_ctrl)
void void
tresize(int col, int row) tresize(int col, int row)
{ {
int i; int i, j;
int minrow = MIN(row, term.row); int minrow = MIN(row, term.row);
int mincol = MIN(col, term.col); int mincol = MIN(col, term.col);
int *bp; int *bp;
@ -2575,6 +2642,14 @@ tresize(int col, int row)
term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty)); term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs)); 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 */ /* resize each row to new width, zero-pad if needed */
for (i = 0; i < minrow; i++) { for (i = 0; i < minrow; i++) {
term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph)); term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
@ -2633,7 +2708,7 @@ drawregion(int x1, int y1, int x2, int y2)
continue; continue;
term.dirty[y] = 0; term.dirty[y] = 0;
xdrawline(term.line[y], x1, y, x2); xdrawline(TLINE(y), x1, y, x2);
} }
} }
@ -2654,6 +2729,7 @@ draw(void)
cx--; cx--;
drawregion(0, 0, term.col, term.row); drawregion(0, 0, term.col, term.row);
if (term.scr == 0)
xdrawcursor(cx, term.c.y, term.line[term.c.y][cx], xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
term.ocx, term.ocy, term.line[term.ocy][term.ocx]); term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
term.ocx = cx; term.ocx = cx;

3
st.h
View File

@ -88,12 +88,15 @@ void die(const char *, ...);
void redraw(void); void redraw(void);
void draw(void); void draw(void);
void kscrolldown(const Arg *);
void kscrollup(const Arg *);
void printscreen(const Arg *); void printscreen(const Arg *);
void printsel(const Arg *); void printsel(const Arg *);
void sendbreak(const Arg *); void sendbreak(const Arg *);
void toggleprinter(const Arg *); void toggleprinter(const Arg *);
int tattrset(int); int tattrset(int);
int tisaltscr(void);
void tnew(int, int); void tnew(int, int);
void tresize(int, int); void tresize(int, int);
void tsetdirtattr(int); void tsetdirtattr(int);

2
x.c
View File

@ -34,6 +34,7 @@ typedef struct {
void (*func)(const Arg *); void (*func)(const Arg *);
const Arg arg; const Arg arg;
uint release; uint release;
int altscrn; /* 0: don't care, -1: not alt screen, 1: alt screen */
} MouseShortcut; } MouseShortcut;
typedef struct { typedef struct {
@ -456,6 +457,7 @@ mouseaction(XEvent *e, uint release)
for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) { for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
if (ms->release == release && if (ms->release == release &&
ms->button == e->xbutton.button && ms->button == e->xbutton.button &&
(!ms->altscrn || (ms->altscrn == (tisaltscr() ? 1 : -1))) &&
(match(ms->mod, state) || /* exact or forced */ (match(ms->mod, state) || /* exact or forced */
match(ms->mod, state & ~forcemousemod))) { match(ms->mod, state & ~forcemousemod))) {
ms->func(&(ms->arg)); ms->func(&(ms->arg));