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Adding scrollback patch

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This commit is contained in:
bakkeby 2019-09-16 15:31:58 +02:00
parent 4bd0ed3327
commit d52c5e4ce8
9 changed files with 302 additions and 3 deletions
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14
README.md
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@ -11,7 +11,7 @@ Refer to [https://dwm.suckless.org/](https://st.suckless.org/) for details on th
### Changelog:
2019-09-16 - Added alpha, anysize, bold-is-not-bright, clipboard, copyurl, disable-fonts, fixime, hidecursor, newterm and open-copied-url patches
2019-09-16 - Added alpha, anysize, bold-is-not-bright, clipboard, copyurl, disable-fonts, fixime, hidecursor, newterm, open-copied-url, vertcenter, scrollback and xresources patches
### Patches included:
@ -47,4 +47,14 @@ Refer to [https://dwm.suckless.org/](https://st.suckless.org/) for details on th
- it will have the same CWD (current working directory) as the original st instance
- [open-copied-url](https://st.suckless.org/patches/open_copied_url/)
- open contents of the clipboard in a user-defined browser
- open contents of the clipboard in a user-defined browser
- [scrollback](https://st.suckless.org/patches/scrollback/)
- allows you scroll back through terminal output using keyboard shortcuts or mousewheel
- [vertcenter](https://st.suckless.org/patches/vertcenter/)
- vertically center lines in the space available if you have set a larger chscale in config.h
- [xresources](https://st.suckless.org/patches/xresources/)
- adds the ability to configure st via Xresources
- during startup, st will read and apply the resources named in the resources[] array in config.h

22
config.def.h
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@ -206,10 +206,28 @@ ResourcePref resources[] = {
*/
static MouseShortcut mshortcuts[] = {
/* button mask string */
#if SCROLLBACK_MOUSE_PATCH || SCROLLBACK_MOUSE_ALTSCREEN_PATCH
{ Button4, XK_NO_MOD, "\031" },
{ Button5, XK_NO_MOD, "\005" },
#else
{ Button4, XK_ANY_MOD, "\031" },
{ Button5, XK_ANY_MOD, "\005" },
#endif // SCROLLBACK_MOUSE_PATCH / SCROLLBACK_MOUSE_ALTSCREEN_PATCH
};
#if SCROLLBACK_MOUSE_PATCH || SCROLLBACK_MOUSE_ALTSCREEN_PATCH
MouseKey mkeys[] = {
/* button mask function argument */
#if SCROLLBACK_MOUSE_ALTSCREEN_PATCH
{ Button4, XK_NO_MOD, kscrollup, {.i = 1} },
{ Button5, XK_NO_MOD, kscrolldown, {.i = 1} },
#else
{ Button4, ShiftMask, kscrollup, {.i = 1} },
{ Button5, ShiftMask, kscrolldown, {.i = 1} },
#endif // SCROLLBACK_MOUSE_ALTSCREEN_PATCH
};
#endif // SCROLLBACK_MOUSE_PATCH / SCROLLBACK_MOUSE_ALTSCREEN_PATCH
/* Internal keyboard shortcuts. */
#define MODKEY Mod1Mask
#define TERMMOD (ControlMask|ShiftMask)
@ -225,6 +243,10 @@ static Shortcut shortcuts[] = {
{ TERMMOD, XK_Home, zoomreset, {.f = 0} },
{ TERMMOD, XK_C, clipcopy, {.i = 0} },
{ TERMMOD, XK_V, clippaste, {.i = 0} },
#if SCROLLBACK_PATCH
{ ShiftMask, XK_Page_Up, kscrollup, {.i = -1} },
{ ShiftMask, XK_Page_Down, kscrolldown, {.i = -1} },
#endif // SCROLLBACK_PATCH
#if CLIPBOARD_PATCH
{ TERMMOD, XK_Y, clippaste, {.i = 0} },
{ ShiftMask, XK_Insert, clippaste, {.i = 0} },

38
patch/scrollback.c Normal file
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@ -0,0 +1,38 @@
void
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();
}
}
#if SCROLLBACK_MOUSE_ALTSCREEN_PATCH
int tisaltscr(void)
{
return IS_SET(MODE_ALTSCREEN);
}
#endif // SCROLLBACK_MOUSE_ALTSCREEN_PATCH

21
patch/scrollback.h Normal file
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@ -0,0 +1,21 @@
#define TLINE(y) ((y) < term.scr ? term.hist[((y) + term.histi - \
term.scr + HISTSIZE + 1) % HISTSIZE] : \
term.line[(y) - term.scr])
void kscrolldown(const Arg *);
void kscrollup(const Arg *);
#if SCROLLBACK_MOUSE_PATCH || SCROLLBACK_MOUSE_ALTSCREEN_PATCH
typedef struct {
uint b;
uint mask;
void (*func)(const Arg *);
const Arg arg;
} MouseKey;
extern MouseKey mkeys[];
#endif // SCROLLBACK_MOUSE_PATCH / SCROLLBACK_MOUSE_ALTSCREEN_PATCH
#if SCROLLBACK_MOUSE_ALTSCREEN_PATCH
int tisaltscr(void);
#endif // SCROLLBACK_MOUSE_ALTSCREEN_PATCH

4
patch/st_include.c
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@ -6,4 +6,8 @@
#if NEWTERM_PATCH
#include "newterm.c"
#endif
#if SCROLLBACK_PATCH || SCROLLBACK_MOUSE_PATCH || SCROLLBACK_MOUSE_ALTSCREEN_PATCH
#include "scrollback.c"
#endif

4
patch/st_include.h
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@ -10,4 +10,8 @@ void xximspot(int, int);
#if NEWTERM_PATCH
#include "newterm.h"
#endif
#if SCROLLBACK_PATCH || SCROLLBACK_MOUSE_PATCH || SCROLLBACK_MOUSE_ALTSCREEN_PATCH
#include "scrollback.h"
#endif

23
patches.h
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@ -80,6 +80,29 @@
*/
#define OPENCOPIED_PATCH 1
/* Scroll back through terminal output using Shift+{PageUp, PageDown}.
* https://st.suckless.org/patches/scrollback/
*/
#define SCROLLBACK_PATCH 1
/* Scroll back through terminal output using Shift+MouseWheel.
* This variant depends on SCROLLBACK_PATCH being enabled.
* https://st.suckless.org/patches/scrollback/
*/
#define SCROLLBACK_MOUSE_PATCH 0
/* Scroll back through terminal output using mouse wheel (when not in MODE_ALTSCREEN).
* This variant depends on SCROLLBACK_PATCH being enabled.
* https://st.suckless.org/patches/scrollback/
*/
#define SCROLLBACK_MOUSE_ALTSCREEN_PATCH 1
/*
* Vertically center lines in the space available if you have set a larger chscale in config.h
* https://st.suckless.org/patches/vertcenter/
*/
#define VERTCENTER_PATCH 1
/* This patch adds the ability to configure st via Xresources. At startup, st will read and
* apply the resources named in the resources[] array in config.h.
* https://st.suckless.org/patches/xresources/

136
st.c
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@ -35,6 +35,9 @@
#define ESC_ARG_SIZ 16
#define STR_BUF_SIZ ESC_BUF_SIZ
#define STR_ARG_SIZ ESC_ARG_SIZ
#if SCROLLBACK_PATCH
#define HISTSIZE 2000
#endif // SCROLLBACK_PATCH
/* macros */
#define IS_SET(flag) ((term.mode & (flag)) != 0)
@ -117,6 +120,11 @@ typedef struct {
int col; /* nb col */
Line *line; /* screen */
Line *alt; /* alternate screen */
#if SCROLLBACK_PATCH
Line hist[HISTSIZE]; /* history buffer */
int histi; /* history index */
int scr; /* scroll back */
#endif // SCROLLBACK_PATCH
int *dirty; /* dirtyness of lines */
TCursor c; /* cursor */
int ocx; /* old cursor col */
@ -184,8 +192,13 @@ static void tnewline(int);
static void tputtab(int);
static void tputc(Rune);
static void treset(void);
#if SCROLLBACK_PATCH
static void tscrollup(int, int, int);
static void tscrolldown(int, int, int);
#else
static void tscrollup(int, int);
static void tscrolldown(int, int);
#endif // SCROLLBACK_PATCH
static void tsetattr(int *, int);
static void tsetchar(Rune, Glyph *, int, int);
static void tsetdirt(int, int);
@ -429,11 +442,19 @@ tlinelen(int y)
{
int i = term.col;
#if SCROLLBACK_PATCH
if (TLINE(y)[i - 1].mode & ATTR_WRAP)
return i;
while (i > 0 && TLINE(y)[i - 1].u == ' ')
--i;
#else
if (term.line[y][i - 1].mode & ATTR_WRAP)
return i;
while (i > 0 && term.line[y][i - 1].u == ' ')
--i;
#endif // SCROLLBACK_PATCH
return i;
}
@ -541,7 +562,11 @@ selsnap(int *x, int *y, int direction)
* Snap around if the word wraps around at the end or
* beginning of a line.
*/
#if SCROLLBACK_PATCH
prevgp = &TLINE(*y)[*x];
#else
prevgp = &term.line[*y][*x];
#endif // SCROLLBACK_PATCH
prevdelim = ISDELIM(prevgp->u);
for (;;) {
newx = *x + direction;
@ -556,14 +581,22 @@ selsnap(int *x, int *y, int direction)
yt = *y, xt = *x;
else
yt = newy, xt = newx;
#if SCROLLBACK_PATCH
if (!(TLINE(yt)[xt].mode & ATTR_WRAP))
#else
if (!(term.line[yt][xt].mode & ATTR_WRAP))
#endif // SCROLLBACK_PATCH
break;
}
if (newx >= tlinelen(newy))
break;
#if SCROLLBACK_PATCH
gp = &TLINE(newy)[newx];
#else
gp = &term.line[newy][newx];
#endif // SCROLLBACK_PATCH
delim = ISDELIM(gp->u);
if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
|| (delim && gp->u != prevgp->u)))
@ -584,14 +617,22 @@ selsnap(int *x, int *y, int direction)
*x = (direction < 0) ? 0 : term.col - 1;
if (direction < 0) {
for (; *y > 0; *y += direction) {
#if SCROLLBACK_PATCH
if (!(TLINE(*y-1)[term.col-1].mode
#else
if (!(term.line[*y-1][term.col-1].mode
#endif // SCROLLBACK_PATCH
& ATTR_WRAP)) {
break;
}
}
} else if (direction > 0) {
for (; *y < term.row-1; *y += direction) {
#if SCROLLBACK_PATCH
if (!(TLINE(*y)[term.col-1].mode
#else
if (!(term.line[*y][term.col-1].mode
#endif // SCROLLBACK_PATCH
& ATTR_WRAP)) {
break;
}
@ -622,13 +663,25 @@ getsel(void)
}
if (sel.type == SEL_RECTANGULAR) {
#if SCROLLBACK_PATCH
gp = &TLINE(y)[sel.nb.x];
#else
gp = &term.line[y][sel.nb.x];
#endif // SCROLLBACK_PATCH
lastx = sel.ne.x;
} else {
#if SCROLLBACK_PATCH
gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
#else
gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
#endif // SCROLLBACK_PATCH
lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
}
#if SCROLLBACK_PATCH
last = &TLINE(y)[MIN(lastx, linelen-1)];
#else
last = &term.line[y][MIN(lastx, linelen-1)];
#endif // SCROLLBACK_PATCH
while (last >= gp && last->u == ' ')
--last;
@ -851,6 +904,11 @@ void
ttywrite(const char *s, size_t n, int may_echo)
{
const char *next;
#if SCROLLBACK_PATCH
Arg arg = (Arg) { .i = term.scr };
kscrolldown(&arg);
#endif // SCROLLBACK_PATCH
if (may_echo && IS_SET(MODE_ECHO))
twrite(s, n, 1);
@ -1062,13 +1120,26 @@ tswapscreen(void)
}
void
#if SCROLLBACK_PATCH
tscrolldown(int orig, int n, int copyhist)
#else
tscrolldown(int orig, int n)
#endif // SCROLLBACK_PATCH
{
int i;
Line temp;
LIMIT(n, 0, term.bot-orig+1);
#if SCROLLBACK_PATCH
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;
}
#endif // SCROLLBACK_PATCH
tsetdirt(orig, term.bot-n);
tclearregion(0, term.bot-n+1, term.col-1, term.bot);
@ -1082,13 +1153,29 @@ tscrolldown(int orig, int n)
}
void
#if SCROLLBACK_PATCH
tscrollup(int orig, int n, int copyhist)
#else
tscrollup(int orig, int n)
#endif // SCROLLBACK_PATCH
{
int i;
Line temp;
LIMIT(n, 0, term.bot-orig+1);
#if SCROLLBACK_PATCH
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);
#endif // SCROLLBACK_PATCH
tclearregion(0, orig, term.col-1, orig+n-1);
tsetdirt(orig+n, term.bot);
@ -1137,7 +1224,11 @@ tnewline(int first_col)
int y = term.c.y;
if (y == term.bot) {
#if SCROLLBACK_PATCH
tscrollup(term.top, 1, 1);
#else
tscrollup(term.top, 1);
#endif // SCROLLBACK_PATCH
} else {
y++;
}
@ -1302,14 +1393,22 @@ void
tinsertblankline(int n)
{
if (BETWEEN(term.c.y, term.top, term.bot))
#if SCROLLBACK_PATCH
tscrolldown(term.c.y, n, 0);
#else
tscrolldown(term.c.y, n);
#endif // SCROLLBACK_PATCH
}
void
tdeleteline(int n)
{
if (BETWEEN(term.c.y, term.top, term.bot))
#if SCROLLBACK_PATCH
tscrollup(term.c.y, n, 0);
#else
tscrollup(term.c.y, n);
#endif // SCROLLBACK_PATCH
}
int32_t
@ -1739,11 +1838,19 @@ csihandle(void)
break;
case 'S': /* SU -- Scroll <n> line up */
DEFAULT(csiescseq.arg[0], 1);
#if SCROLLBACK_PATCH
tscrollup(term.top, csiescseq.arg[0], 0);
#else
tscrollup(term.top, csiescseq.arg[0]);
#endif // SCROLLBACK_PATCH
break;
case 'T': /* SD -- Scroll <n> line down */
DEFAULT(csiescseq.arg[0], 1);
#if SCROLLBACK_PATCH
tscrolldown(term.top, csiescseq.arg[0], 0);
#else
tscrolldown(term.top, csiescseq.arg[0]);
#endif // SCROLLBACK_PATCH
break;
case 'L': /* IL -- Insert <n> blank lines */
DEFAULT(csiescseq.arg[0], 1);
@ -2245,7 +2352,11 @@ eschandle(uchar ascii)
return 0;
case 'D': /* IND -- Linefeed */
if (term.c.y == term.bot) {
#if SCROLLBACK_PATCH
tscrollup(term.top, 1, 1);
#else
tscrollup(term.top, 1);
#endif // SCROLLBACK_PATCH
} else {
tmoveto(term.c.x, term.c.y+1);
}
@ -2258,7 +2369,11 @@ eschandle(uchar ascii)
break;
case 'M': /* RI -- Reverse index */
if (term.c.y == term.top) {
#if SCROLLBACK_PATCH
tscrolldown(term.top, 1, 1);
#else
tscrolldown(term.top, 1);
#endif // SCROLLBACK_PATCH
} else {
tmoveto(term.c.x, term.c.y-1);
}
@ -2478,6 +2593,9 @@ void
tresize(int col, int row)
{
int i;
#if SCROLLBACK_PATCH
int j;
#endif // SCROLLBACK_PATCH
int minrow = MIN(row, term.row);
int mincol = MIN(col, term.col);
int *bp;
@ -2514,6 +2632,16 @@ tresize(int col, int row)
term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
#if SCROLLBACK_PATCH
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 = ' ';
}
}
#endif // SCROLLBACK_PATCH
/* 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));
@ -2571,7 +2699,11 @@ drawregion(int x1, int y1, int x2, int y2)
continue;
term.dirty[y] = 0;
#if SCROLLBACK_PATCH
xdrawline(TLINE(y), x1, y, x2);
#else
xdrawline(term.line[y], x1, y, x2);
#endif // SCROLLBACK_PATCH
}
}
@ -2592,6 +2724,10 @@ draw(void)
cx--;
drawregion(0, 0, term.col, term.row);
#if SCROLLBACK_PATCH
if (term.scr == 0)
#endif // SCROLLBACK_PATCH
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;

43
x.c
View File

@ -86,6 +86,9 @@ typedef struct {
#endif // ANYSIZE_PATCH
int ch; /* char height */
int cw; /* char width */
#if VERTCENTER_PATCH
int cyo; /* char y offset */
#endif // VERTCENTER_PATCH
int mode; /* window state/mode flags */
int cursor; /* cursor style */
} TermWindow;
@ -438,6 +441,9 @@ bpress(XEvent *e)
{
struct timespec now;
MouseShortcut *ms;
#if SCROLLBACK_MOUSE_PATCH || SCROLLBACK_MOUSE_ALTSCREEN_PATCH
MouseKey *mk;
#endif // SCROLLBACK_MOUSE_PATCH / SCROLLBACK_MOUSE_ALTSCREEN_PATCH
int snap;
if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
@ -445,6 +451,9 @@ bpress(XEvent *e)
return;
}
#if SCROLLBACK_MOUSE_ALTSCREEN_PATCH
if (tisaltscr())
#endif // SCROLLBACK_MOUSE_ALTSCREEN_PATCH
for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
if (e->xbutton.button == ms->b
&& match(ms->mask, e->xbutton.state)) {
@ -453,6 +462,16 @@ bpress(XEvent *e)
}
}
#if SCROLLBACK_MOUSE_PATCH || SCROLLBACK_MOUSE_ALTSCREEN_PATCH
for (mk = mkeys; mk < mkeys + LEN(mkeys); mk++) {
if (e->xbutton.button == mk->b
&& match(mk->mask, e->xbutton.state)) {
mk->func(&mk->arg);
return;
}
}
#endif // SCROLLBACK_MOUSE_PATCH / SCROLLBACK_MOUSE_ALTSCREEN_PATCH
if (e->xbutton.button == Button1) {
/*
* If the user clicks below predefined timeouts specific
@ -1029,6 +1048,9 @@ xloadfonts(char *fontstr, double fontsize)
/* Setting character width and height. */
win.cw = ceilf(dc.font.width * cwscale);
win.ch = ceilf(dc.font.height * chscale);
#if VERTCENTER_PATCH
win.cyo = ceilf(dc.font.height * (chscale - 1) / 2);
#endif // VERTCENTER_PATCH
FcPatternDel(pattern, FC_SLANT);
#if !DISABLE_ITALIC_FONTS_PATCH
@ -1283,7 +1305,12 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
FcCharSet *fccharset;
int i, f, numspecs = 0;
for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
#if VERTCENTER_PATCH
for (i = 0, xp = winx, yp = winy + font->ascent + win.cyo; i < len; ++i)
#else
for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i)
#endif // VERTCENTER_PATCH
{
/* Fetch rune and mode for current glyph. */
rune = glyphs[i].u;
mode = glyphs[i].mode;
@ -1308,7 +1335,11 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
font = &dc.bfont;
frcflags = FRC_BOLD;
}
#if VERTCENTER_PATCH
yp = winy + font->ascent + win.cyo;
#else
yp = winy + font->ascent;
#endif // VERTCENTER_PATCH
}
/* Lookup character index with default font. */
@ -1546,13 +1577,23 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
/* Render underline and strikethrough. */
if (base.mode & ATTR_UNDERLINE) {
#if VERTCENTER_PATCH
XftDrawRect(xw.draw, fg, winx, winy + win.cyo + dc.font.ascent + 1,
width, 1);
#else
XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
width, 1);
#endif
}
if (base.mode & ATTR_STRUCK) {
#if VERTCENTER_PATCH
XftDrawRect(xw.draw, fg, winx, winy + win.cyo + 2 * dc.font.ascent / 3,
width, 1);
#else
XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
width, 1);
#endif // VERTCENTER_PATCH
}
/* Reset clip to none. */