Selection snapping is now considering wrapping.

[st.git] / st.c

diff --git a/st.c b/st.c
index 8d27c94..5095315 100644 (file)
--- a/st.c
+++ b/st.c
@@ -116,6 +116,8 @@ enum term_mode {
        MODE_APPCURSOR   = 2048,
        MODE_MOUSESGR    = 4096,
        MODE_8BIT        = 8192,
+       MODE_BLINK       = 16384,
+       MODE_FBLINK      = 32768,
 };
 
 enum escape_state {
@@ -227,6 +229,12 @@ typedef struct {
 } XWindow;
 
 typedef struct {
+       int b;
+       uint mask;
+       char s[ESC_BUF_SIZ];
+} Mousekey;
+
+typedef struct {
        KeySym k;
        uint mask;
        char s[ESC_BUF_SIZ];
@@ -313,6 +321,7 @@ static void strhandle(void);
 static void strparse(void);
 static void strreset(void);
 
+static int tattrset(int);
 static void tclearregion(int, int, int, int);
 static void tcursor(int);
 static void tdeletechar(int);
@@ -334,6 +343,7 @@ static void tsetchar(char *, Glyph *, int, int);
 static void tsetscroll(int, int);
 static void tswapscreen(void);
 static void tsetdirt(int, int);
+static void tsetdirtattr(int);
 static void tsetmode(bool, bool, int *, int);
 static void tfulldirt(void);
 static void techo(char *, int);
@@ -671,13 +681,49 @@ void
 selsnap(int mode, int *x, int *y, int direction) {
        switch(mode) {
        case SNAP_WORD:
-               while(*x > 0 && *x < term.col-1
-                               && term.line[*y][*x + direction].c[0] != ' ') {
+               for(;;) {
+                       if(direction < 0 && *x <= 0) {
+                               if(*y > 0 && term.line[*y - 1][term.col-1].mode
+                                               & ATTR_WRAP) {
+                                       *y -= 1;
+                                       *x = term.col-1;
+                               } else {
+                                       break;
+                               }
+                       }
+                       if(direction > 0 && *x >= term.col-1) {
+                               if(*y < term.row-1 && term.line[*y][*x].mode
+                                               & ATTR_WRAP) {
+                                       *y += 1;
+                                       *x = 0;
+                               } else {
+                                       break;
+                               }
+                       }
+
+                       if(term.line[*y][*x + direction].c[0] == ' ')
+                               break;
+
                        *x += direction;
                }
                break;
        case SNAP_LINE:
                *x = (direction < 0) ? 0 : term.col - 1;
+               if(direction < 0 && *y > 0) {
+                       for(; *y > 0; *y += direction) {
+                               if(!(term.line[*y-1][term.col-1].mode
+                                               & ATTR_WRAP)) {
+                                       break;
+                               }
+                       }
+               } else if(direction > 0 && *y < term.row-1) {
+                       for(; *y < term.row; *y += direction) {
+                               if(!(term.line[*y][term.col-1].mode
+                                               & ATTR_WRAP)) {
+                                       break;
+                               }
+                       }
+               }
                break;
        default:
                break;
@@ -767,10 +813,24 @@ mousereport(XEvent *e) {
 void
 bpress(XEvent *e) {
        struct timeval now;
+       Mousekey *mk;
 
        if(IS_SET(MODE_MOUSE)) {
                mousereport(e);
-       } else if(e->xbutton.button == Button1) {
+               return;
+       }
+
+       for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
+               if(e->xbutton.button == mk->b
+                               && match(mk->mask, e->xbutton.state)) {
+                       ttywrite(mk->s, strlen(mk->s));
+                       if(IS_SET(MODE_ECHO))
+                               techo(mk->s, strlen(mk->s));
+                       return;
+               }
+       }
+
+       if(e->xbutton.button == Button1) {
                gettimeofday(&now, NULL);
 
                /* Clear previous selection, logically and visually. */
@@ -796,7 +856,7 @@ bpress(XEvent *e) {
                        sel.snap = 0;
                }
                selsnap(sel.snap, &sel.bx, &sel.by, -1);
-               selsnap(sel.snap, &sel.ex, &sel.ey, 1);
+               selsnap(sel.snap, &sel.ex, &sel.ey, +1);
                sel.b.x = sel.bx;
                sel.b.y = sel.by;
                sel.e.x = sel.ex;
@@ -813,10 +873,6 @@ bpress(XEvent *e) {
                }
                sel.tclick2 = sel.tclick1;
                sel.tclick1 = now;
-       } else if(e->xbutton.button == Button4) {
-               ttywrite("\031", 1);
-       } else if(e->xbutton.button == Button5) {
-               ttywrite("\005", 1);
        }
 }
 
@@ -1175,6 +1231,20 @@ ttyresize(void) {
                fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
 }
 
+int
+tattrset(int attr) {
+       int i, j;
+
+       for(i = 0; i < term.row-1; i++) {
+               for(j = 0; j < term.col-1; j++) {
+                       if(term.line[i][j].mode & attr)
+                               return 1;
+               }
+       }
+
+       return 0;
+}
+
 void
 tsetdirt(int top, int bot) {
        int i;
@@ -1187,6 +1257,20 @@ tsetdirt(int top, int bot) {
 }
 
 void
+tsetdirtattr(int attr) {
+       int i, j;
+
+       for(i = 0; i < term.row-1; i++) {
+               for(j = 0; j < term.col-1; j++) {
+                       if(term.line[i][j].mode & attr) {
+                               tsetdirt(i, i);
+                               break;
+                       }
+               }
+       }
+}
+
+void
 tfulldirt(void) {
        tsetdirt(0, term.row-1);
 }
@@ -2838,6 +2922,9 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
                bg = temp;
        }
 
+       if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
+               fg = bg;
+
        /* Intelligent cleaning up of the borders. */
        if(x == 0) {
                xclear(0, (y == 0)? 0 : winy, borderpx,
@@ -3345,34 +3432,55 @@ void
 run(void) {
        XEvent ev;
        fd_set rfd;
-       int xfd = XConnectionNumber(xw.dpy), xev;
-       struct timeval drawtimeout, *tv = NULL, now, last;
+       int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
+       struct timeval drawtimeout, *tv = NULL, now, last, lastblink;
 
+       gettimeofday(&lastblink, NULL);
        gettimeofday(&last, NULL);
 
        for(xev = actionfps;;) {
                FD_ZERO(&rfd);
                FD_SET(cmdfd, &rfd);
                FD_SET(xfd, &rfd);
-               if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
+
+               switch(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
+               case -1:
                        if(errno == EINTR)
                                continue;
                        die("select failed: %s\n", SERRNO);
-               }
+               default:
+                       if(FD_ISSET(cmdfd, &rfd)) {
+                               ttyread();
+                               if(blinktimeout) {
+                                       blinkset = tattrset(ATTR_BLINK);
+                                       if(!blinkset && term.mode & ATTR_BLINK)
+                                               term.mode &= ~(MODE_BLINK);
+                               }
+                       }
 
+                       if(FD_ISSET(xfd, &rfd))
+                               xev = actionfps;
+                       break;
+               }
                gettimeofday(&now, NULL);
                drawtimeout.tv_sec = 0;
                drawtimeout.tv_usec = (1000/xfps) * 1000;
                tv = &drawtimeout;
 
-               if(FD_ISSET(cmdfd, &rfd))
-                       ttyread();
-
-               if(FD_ISSET(xfd, &rfd))
-                       xev = actionfps;
+               dodraw = 0;
+               if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
+                       tsetdirtattr(ATTR_BLINK);
+                       term.mode ^= MODE_BLINK;
+                       gettimeofday(&lastblink, NULL);
+                       dodraw = 1;
+               }
+               if(TIMEDIFF(now, last) \
+                               > (xev? (1000/xfps) : (1000/actionfps))) {
+                       dodraw = 1;
+                       last = now;
+               }
 
-               if(TIMEDIFF(now, last) > \
-                               (xev ? (1000/xfps) : (1000/actionfps))) {
+               if(dodraw) {
                        while(XPending(xw.dpy)) {
                                XNextEvent(xw.dpy, &ev);
                                if(XFilterEvent(&ev, None))
@@ -3383,12 +3491,17 @@ run(void) {
 
                        draw();
                        XFlush(xw.dpy);
-                       last = now;
 
                        if(xev && !FD_ISSET(xfd, &rfd))
                                xev--;
-                       if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd))
-                               tv = NULL;
+                       if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
+                               if(blinkset) {
+                                       drawtimeout.tv_usec = 1000 * \
+                                               blinktimeout;
+                               } else {
+                                       tv = NULL;
+                               }
+                       }
                }
        }
 }