diff options
| -rw-r--r-- | st.c | 90 |
1 files changed, 63 insertions, 27 deletions
@@ -135,6 +135,11 @@ enum selection_type { SEL_RECTANGULAR = 2 }; +enum selection_snap { + SNAP_WORD = 1, + SNAP_LINE = 2 +}; + /* bit macro */ #undef B0 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 }; @@ -232,6 +237,7 @@ typedef struct { typedef struct { int mode; int type; + int snap; int bx, by; int ex, ey; struct { @@ -372,6 +378,7 @@ static void selinit(void); static inline bool selected(int, int); static void selcopy(void); static void selscroll(int, int); +static void selsnap(int, int *, int *, int); static int utf8decode(char *, long *); static int utf8encode(long *, char *); @@ -658,6 +665,25 @@ selected(int x, int y) { } 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] != ' ') { + *x += direction; + } + break; + + case SNAP_LINE: + *x = (direction < 0) ? 0 : term.col - 1; + break; + + default: + /* do nothing */ + break; + } +} + +void getbuttoninfo(XEvent *e) { int type; uint state = e->xbutton.state &~Button1Mask; @@ -667,6 +693,15 @@ getbuttoninfo(XEvent *e) { sel.ex = x2col(e->xbutton.x); sel.ey = y2row(e->xbutton.y); + if (sel.by < sel.ey + || (sel.by == sel.ey && sel.bx < sel.ex)) { + selsnap(sel.snap, &sel.bx, &sel.by, -1); + selsnap(sel.snap, &sel.ex, &sel.ey, +1); + } else { + selsnap(sel.snap, &sel.ex, &sel.ey, -1); + selsnap(sel.snap, &sel.bx, &sel.by, +1); + } + 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; @@ -730,9 +765,13 @@ mousereport(XEvent *e) { void bpress(XEvent *e) { + struct timeval now; + if(IS_SET(MODE_MOUSE)) { mousereport(e); } else if(e->xbutton.button == Button1) { + gettimeofday(&now, NULL); + /* Clear previous selection, logically and visually. */ if(sel.bx != -1) { sel.bx = -1; tsetdirt(sel.b.y, sel.e.y); @@ -742,6 +781,30 @@ bpress(XEvent *e) { sel.type = SEL_REGULAR; sel.ex = sel.bx = x2col(e->xbutton.x); sel.ey = sel.by = y2row(e->xbutton.y); + /* + * Snap handling. + * If user clicks are fasst enough (e.g. below timeouts), + * we ignore if his hand slipped left or down and accidentally selected more; + * we are just snapping to whatever we're snapping. + */ + if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) { + /* Snap to line */ + sel.snap = SNAP_LINE; + } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) { + sel.snap = SNAP_WORD; + } else { + sel.snap = 0; + } + selsnap(sel.snap, &sel.bx, &sel.by, -1); + selsnap(sel.snap, &sel.ex, &sel.ey, 1); + sel.b.x = sel.bx, sel.b.y = sel.by, sel.e.x = sel.ex, sel.e.y = sel.ey; + /* Draw selection, unless it's regular and we don't want to make clicks visible */ + if (sel.snap != 0) { + tsetdirt(sel.b.y, sel.e.y); + draw(); + } + sel.tclick2 = sel.tclick1; + sel.tclick1 = now; } else if(e->xbutton.button == Button4) { ttywrite("\031", 1); } else if(e->xbutton.button == Button5) { @@ -907,8 +970,6 @@ xsetsel(char *str) { void brelease(XEvent *e) { - struct timeval now; - if(IS_SET(MODE_MOUSE)) { mousereport(e); return; @@ -922,35 +983,10 @@ brelease(XEvent *e) { term.dirty[sel.ey] = 1; if(sel.bx == sel.ex && sel.by == sel.ey) { sel.bx = -1; - gettimeofday(&now, NULL); - - if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) { - /* triple click on the line */ - sel.b.x = sel.bx = 0; - sel.e.x = sel.ex = term.col; - sel.b.y = sel.e.y = sel.ey; - selcopy(); - } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) { - /* double click to select word */ - sel.bx = sel.ex; - while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].c[0] != ' ') { - sel.bx--; - } - sel.b.x = sel.bx; - while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].c[0] != ' ') { - sel.ex++; - } - sel.e.x = sel.ex; - sel.b.y = sel.e.y = sel.ey; - selcopy(); - } } else { selcopy(); } } - - memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval)); - gettimeofday(&sel.tclick1, NULL); } void |