X-Git-Url: https://git.xinqibao.xyz/st.git/blobdiff_plain/326586ba434fb873ebdb81f385ebe838419a98a7..5ce6c5c0324ef3b7d0f5b9e6e2ba4d87ae0d3bb1:/st.c?ds=inline
diff --git a/st.c b/st.c
index 73121ef..65829a8 100644
--- a/st.c
+++ b/st.c
@@ -50,7 +50,7 @@ enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT,
CURSOR_SAVE, CURSOR_LOAD };
enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
-enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4 };
+enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8 };
enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
enum { SCREEN_UPDATE, SCREEN_REDRAW };
@@ -86,7 +86,8 @@ typedef struct {
typedef struct {
int row; /* nb row */
int col; /* nb col */
- Line* line; /* screen */
+ Line* line; /* screen */
+ Line* alt; /* alternate screen */
TCursor c; /* cursor */
int top; /* top scroll limit */
int bot; /* bottom scroll limit */
@@ -124,6 +125,15 @@ typedef struct {
GC gc;
} DC;
+/* TODO: use better name for vars... */
+typedef struct {
+ int mode;
+ int bx, by;
+ int ex, ey;
+ struct {int x, y;} b, e;
+ char *clip;
+} Selection;
+
#include "config.h"
static void die(const char *errstr, ...);
@@ -156,6 +166,7 @@ static void tscrolldown(int);
static void tsetattr(int*, int);
static void tsetchar(char);
static void tsetscroll(int, int);
+static void tswapscreen(void);
static void ttynew(void);
static void ttyread(void);
@@ -175,6 +186,9 @@ static char* kmap(KeySym);
static void kpress(XEvent *);
static void resize(XEvent *);
static void focus(XEvent *);
+static void brelease(XEvent *);
+static void bpress(XEvent *);
+static void bmotion(XEvent *);
static void (*handler[LASTEvent])(XEvent *) = {
@@ -183,6 +197,9 @@ static void (*handler[LASTEvent])(XEvent *) = {
[ConfigureNotify] = resize,
[FocusIn] = focus,
[FocusOut] = focus,
+ [MotionNotify] = bmotion,
+ [ButtonPress] = bpress,
+ [ButtonRelease] = brelease,
};
/* Globals */
@@ -192,6 +209,93 @@ static Term term;
static CSIEscape escseq;
static int cmdfd;
static pid_t pid;
+static Selection sel;
+
+void
+selinit(void) {
+ sel.mode = 0;
+ sel.bx = -1;
+ sel.clip = NULL;
+}
+
+static inline int selected(int x, int y) {
+ if(sel.ey == y && sel.by == y) {
+ int bx = MIN(sel.bx, sel.ex);
+ int ex = MAX(sel.bx, sel.ex);
+ return BETWEEN(x, bx, ex);
+ }
+ return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
+ || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
+}
+
+static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
+ if(b) *b = e->xbutton.state,
+ *b=*b==4096?5:*b==2048?4:*b==1024?3:*b==512?2:*b==256?1:-1;
+ *x = e->xbutton.x/xw.cw;
+ *y = e->xbutton.y/xw.ch;
+ sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
+ sel.b.y = MIN(sel.by, sel.ey);
+ sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
+ sel.e.y = MAX(sel.by, sel.ey);
+}
+
+static void bpress(XEvent *e) {
+ sel.mode = 1;
+ sel.ex = sel.bx = e->xbutton.x/xw.cw;
+ sel.ey = sel.by = e->xbutton.y/xw.ch;
+}
+
+static char *getseltext() {
+ char *str, *ptr;
+ int ls, x, y, sz;
+ if(sel.bx == -1)
+ return NULL;
+ sz = (term.col+1) * (sel.e.y-sel.b.y+1);
+ ptr = str = malloc(sz);
+ for(y = 0; y < term.row; y++) {
+ for(x = 0; x < term.col; x++)
+ if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y)))
+ *ptr = term.line[y][x].c, ptr++;
+ if(ls)
+ *ptr = '\n', ptr++;
+ }
+ *ptr = 0;
+ return str;
+}
+
+/* TODO: use X11 clipboard */
+static void selcopy(char *str) {
+ free(sel.clip);
+ sel.clip = str;
+}
+
+static void selpaste() {
+ if(sel.clip)
+ ttywrite(sel.clip, strlen(sel.clip));
+}
+
+/* TODO: doubleclick to select word */
+static void brelease(XEvent *e) {
+ int b;
+ sel.mode = 0;
+ getbuttoninfo(e, &b, &sel.ex, &sel.ey);
+ if(sel.bx==sel.ex && sel.by==sel.ey) {
+ sel.bx = -1;
+ if(b==2)
+ selpaste();
+ } else {
+ if(b==1)
+ selcopy(getseltext());
+ }
+ draw(1);
+}
+
+static void bmotion(XEvent *e) {
+ if (sel.mode) {
+ getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
+ draw(1);
+ }
+}
#ifdef DEBUG
void
@@ -226,7 +330,7 @@ die(const char *errstr, ...) {
void
execsh(void) {
char *args[3] = {getenv("SHELL"), "-i", NULL};
- DEFAULT(args[0], "/bin/sh"); /* if getenv() failed */
+ DEFAULT(args[0], SHELL); /* if getenv() failed */
putenv("TERM=" TNAME);
execvp(args[0], args);
}
@@ -283,13 +387,15 @@ dump(char c) {
void
ttyread(void) {
- char buf[BUFSIZ] = {0};
+ char buf[BUFSIZ];
int ret;
- if((ret = read(cmdfd, buf, BUFSIZ)) < 0)
+ if((ret = read(cmdfd, buf, LEN(buf))) < 0)
die("Couldn't read from shell: %s\n", SERRNO);
- else
+ else {
+ printf("ttyread %d\n", ret);
tputs(buf, ret);
+ }
}
void
@@ -337,12 +443,23 @@ tnew(int col, int row) {
/* set screen size */
term.row = row, term.col = col;
term.line = malloc(term.row * sizeof(Line));
- for(row = 0 ; row < term.row; row++)
+ term.alt = malloc(term.row * sizeof(Line));
+ for(row = 0 ; row < term.row; row++) {
term.line[row] = malloc(term.col * sizeof(Glyph));
+ term.alt [row] = malloc(term.col * sizeof(Glyph));
+ }
/* setup screen */
treset();
}
+void
+tswapscreen(void) {
+ Line* tmp = term.line;
+ term.line = term.alt;
+ term.alt = tmp;
+ term.mode ^= MODE_ALTSCREEN;
+}
+
void
tscrolldown (int n) {
int i;
@@ -350,8 +467,7 @@ tscrolldown (int n) {
LIMIT(n, 0, term.bot-term.top+1);
- for(i = 0; i < n; i++)
- memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
+ tclearregion(0, term.bot-n+1, term.col-1, term.bot);
for(i = term.bot; i >= term.top+n; i--) {
temp = term.line[i];
@@ -366,8 +482,7 @@ tscrollup (int n) {
Line temp;
LIMIT(n, 0, term.bot-term.top+1);
- for(i = 0; i < n; i++)
- memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
+ tclearregion(0, term.top, term.col-1, term.top+n-1);
for(i = term.top; i <= term.bot-n; i++) {
temp = term.line[i];
@@ -476,21 +591,16 @@ tinsertblankline(int n) {
Line blank;
int bot = term.bot;
- if(term.c.y > term.bot)
- bot = term.row - 1;
- else if(term.c.y < term.top)
- bot = term.top - 1;
- if(term.c.y + n >= bot) {
- tclearregion(0, term.c.y, term.col-1, bot);
+ if(term.c.y < term.top || term.c.y > term.bot)
return;
- }
+
+ LIMIT(n, 0, bot-term.c.y+1);
+ tclearregion(0, bot-n+1, term.col-1, bot);
for(i = bot; i >= term.c.y+n; i--) {
/* swap deleted line <-> blanked line */
blank = term.line[i];
term.line[i] = term.line[i-n];
term.line[i-n] = blank;
- /* blank it */
- memset(blank, 0, term.col * sizeof(Glyph));
}
}
@@ -500,21 +610,16 @@ tdeleteline(int n) {
Line blank;
int bot = term.bot;
- if(term.c.y > term.bot)
- bot = term.row - 1;
- else if(term.c.y < term.top)
- bot = term.top - 1;
- if(term.c.y + n >= bot) {
- tclearregion(0, term.c.y, term.col-1, bot);
+ if(term.c.y < term.top || term.c.y > term.bot)
return;
- }
+
+ LIMIT(n, 0, bot-term.c.y+1);
+ tclearregion(0, term.c.y, term.col-1, term.c.y+n-1);
for(i = term.c.y; i <= bot-n; i++) {
/* swap deleted line <-> blanked line */
blank = term.line[i];
term.line[i] = term.line[i+n];
term.line[i+n] = blank;
- /* blank it */
- memset(blank, 0, term.col * sizeof(Glyph));
}
}
@@ -668,7 +773,6 @@ csihandle(void) {
case 2: /* all */
tclearregion(0, 0, term.col-1, term.row-1);
break;
- case 3: /* XXX: erase saved lines (xterm) */
default:
goto unknown;
}
@@ -712,10 +816,16 @@ csihandle(void) {
case 25:
term.c.state |= CURSOR_HIDE;
break;
- case 1048: /* XXX: no alt. screen to erase/save */
- case 1049:
+ case 1049: /* = 1047 and 1048 */
+ case 1047:
+ if(IS_SET(MODE_ALTSCREEN)) {
+ tclearregion(0, 0, term.col-1, term.row-1);
+ tswapscreen();
+ }
+ if(escseq.arg[0] == 1047)
+ break;
+ case 1048:
tcursor(CURSOR_LOAD);
- tclearregion(0, 0, term.col-1, term.row-1);
break;
default:
goto unknown;
@@ -761,10 +871,16 @@ csihandle(void) {
case 25:
term.c.state &= ~CURSOR_HIDE;
break;
- case 1048:
- case 1049: /* XXX: no alt. screen to erase/save */
+ case 1049: /* = 1047 and 1048 */
+ case 1047:
+ if(IS_SET(MODE_ALTSCREEN))
+ tclearregion(0, 0, term.col-1, term.row-1);
+ else
+ tswapscreen();
+ if(escseq.arg[0] == 1047)
+ break;
+ case 1048:
tcursor(CURSOR_SAVE);
- tclearregion(0, 0, term.col-1, term.row-1);
break;
default: goto unknown;
}
@@ -831,7 +947,8 @@ tputc(char c) {
term.esc = 0;
csiparse(), csihandle();
}
- } else if(term.esc & ESC_OSC) {
+ /* TODO: handle other OSC */
+ } else if(term.esc & ESC_OSC) {
if(c == ';') {
term.titlelen = 0;
term.esc = ESC_START | ESC_TITLE;
@@ -889,19 +1006,19 @@ tputc(char c) {
treset();
term.esc = 0;
break;
- case '=': /* DECPAM */
+ case '=': /* DECPAM -- Application keypad */
term.mode |= MODE_APPKEYPAD;
term.esc = 0;
break;
- case '>': /* DECPNM */
+ case '>': /* DECPNM -- Normal keypad */
term.mode &= ~MODE_APPKEYPAD;
term.esc = 0;
break;
- case '7':
+ case '7': /* DECSC -- Save Cursor */
tcursor(CURSOR_SAVE);
term.esc = 0;
break;
- case '8':
+ case '8': /* DECRC -- Restore Cursor */
tcursor(CURSOR_LOAD);
term.esc = 0;
break;
@@ -961,21 +1078,28 @@ tresize(int col, int row) {
return;
/* free uneeded rows */
- for(i = row; i < term.row; i++)
+ for(i = row; i < term.row; i++) {
free(term.line[i]);
+ free(term.alt[i]);
+ }
/* resize to new height */
term.line = realloc(term.line, row * sizeof(Line));
+ term.alt = realloc(term.alt, row * sizeof(Line));
/* resize each row to new width, zero-pad if needed */
for(i = 0; i < minrow; i++) {
term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
+ term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph));
memset(term.line[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
+ memset(term.alt[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
}
/* allocate any new rows */
- for(/* i == minrow */; i < row; i++)
+ for(/* i == minrow */; i < row; i++) {
term.line[i] = calloc(col, sizeof(Glyph));
+ term.alt [i] = calloc(col, sizeof(Glyph));
+ }
/* update terminal size */
term.col = col, term.row = row;
@@ -1068,17 +1192,23 @@ xinit(void) {
xloadcols();
/* windows */
- xw.h = term.row * xw.ch + 2*BORDER;
- xw.w = term.col * xw.cw + 2*BORDER;
+ xw.bufh = term.row * xw.ch;
+ xw.bufw = term.col * xw.cw;
+ xw.h = xw.bufh + 2*BORDER;
+ xw.w = xw.bufw + 2*BORDER;
xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
xw.w, xw.h, 0,
dc.col[DefaultBG],
dc.col[DefaultBG]);
- xw.bufw = xw.w - 2*BORDER;
- xw.bufh = xw.h - 2*BORDER;
xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
/* gc */
dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
+
+ /* event mask */
+ XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask
+ | StructureNotifyMask | FocusChangeMask | PointerMotionMask
+ | ButtonPressMask | ButtonReleaseMask);
+
XMapWindow(xw.dis, xw.win);
xhints();
XStoreName(xw.dis, xw.win, "st");
@@ -1168,7 +1298,7 @@ draw(int redraw_all) {
int i, x, y, ox;
Glyph base, new;
char buf[DRAW_BUF_SIZ];
-
+
XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.bufw, xw.bufh);
for(y = 0; y < term.row; y++) {
@@ -1176,8 +1306,10 @@ draw(int redraw_all) {
i = ox = 0;
for(x = 0; x < term.col; x++) {
new = term.line[y][x];
+ if(sel.bx!=-1 && new.c && selected(x, y))
+ new.mode ^= ATTR_REVERSE;
if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
- i >= DRAW_BUF_SIZ)) {
+ i >= DRAW_BUF_SIZ)) {
xdraws(buf, base, ox, y, i);
i = 0;
}
@@ -1260,7 +1392,7 @@ kpress(XEvent *ev) {
break;
case XK_Insert:
if(shift)
- draw(1), puts("draw!")/* XXX: paste X clipboard */;
+ selpaste(), draw(1);
break;
default:
fprintf(stderr, "errkey: %d\n", (int)ksym);
@@ -1283,6 +1415,8 @@ resize(XEvent *e) {
row = xw.bufh / xw.ch;
tresize(col, row);
ttyresize(col, row);
+ xw.bufh = MAX(1, xw.bufh);
+ xw.bufw = MAX(1, xw.bufw);
XFreePixmap(xw.dis, xw.buf);
xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
draw(SCREEN_REDRAW);
@@ -1293,12 +1427,8 @@ run(void) {
XEvent ev;
fd_set rfd;
int xfd = XConnectionNumber(xw.dis);
- long mask = ExposureMask | KeyPressMask | StructureNotifyMask | FocusChangeMask;
-
- XSelectInput(xw.dis, xw.win, mask);
- XResizeWindow(xw.dis, xw.win, xw.w, xw.h); /* XXX: fix resize bug in wmii (?) */
- while(1) {
+ for(;;) {
FD_ZERO(&rfd);
FD_SET(cmdfd, &rfd);
FD_SET(xfd, &rfd);
@@ -1329,6 +1459,7 @@ main(int argc, char *argv[]) {
tnew(80, 24);
ttynew();
xinit();
+ selinit();
run();
return 0;
}