Added support for double/triple click+dragging.
Now double-click+dragging automatically snaps both ends to word boundaries (unless on series of spaces), and triple-click selects whole lines. As a side effect, snapping now occurs on button press, not button release like it previously was, but I hope that won't be inconvenient for anyone. Signed-off-by: Christoph Lohmann <20h@r-36.net>
This commit is contained in:
Alexander Sedov
Christoph Lohmann
parent
3c546ae739
commit
872a7f18ea
90
st.c
90
st.c
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@ -135,6 +135,11 @@ enum selection_type {
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SEL_RECTANGULAR = 2
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};
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enum selection_snap {
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SNAP_WORD = 1,
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SNAP_LINE = 2
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};
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/* bit macro */
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#undef B0
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enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
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@ -232,6 +237,7 @@ typedef struct {
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typedef struct {
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int mode;
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int type;
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int snap;
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int bx, by;
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int ex, ey;
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struct {
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@ -372,6 +378,7 @@ static void selinit(void);
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static inline bool selected(int, int);
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static void selcopy(void);
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static void selscroll(int, int);
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static void selsnap(int, int *, int *, int);
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static int utf8decode(char *, long *);
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static int utf8encode(long *, char *);
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@ -657,6 +664,25 @@ selected(int x, int y) {
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&& (x <= sel.e.x || sel.b.y != sel.e.y));
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}
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void
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selsnap(int mode, int *x, int *y, int direction) {
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switch(mode) {
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case SNAP_WORD:
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while(*x > 0 && *x < term.col-1 && term.line[*y][*x + direction].c[0] != ' ') {
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*x += direction;
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}
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break;
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case SNAP_LINE:
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*x = (direction < 0) ? 0 : term.col - 1;
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break;
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default:
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/* do nothing */
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break;
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}
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}
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void
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getbuttoninfo(XEvent *e) {
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int type;
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@ -667,6 +693,15 @@ getbuttoninfo(XEvent *e) {
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sel.ex = x2col(e->xbutton.x);
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sel.ey = y2row(e->xbutton.y);
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if (sel.by < sel.ey
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|| (sel.by == sel.ey && sel.bx < sel.ex)) {
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selsnap(sel.snap, &sel.bx, &sel.by, -1);
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selsnap(sel.snap, &sel.ex, &sel.ey, +1);
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} else {
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selsnap(sel.snap, &sel.ex, &sel.ey, -1);
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selsnap(sel.snap, &sel.bx, &sel.by, +1);
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}
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sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
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sel.b.y = MIN(sel.by, sel.ey);
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sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
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@ -730,9 +765,13 @@ mousereport(XEvent *e) {
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void
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bpress(XEvent *e) {
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struct timeval now;
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if(IS_SET(MODE_MOUSE)) {
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mousereport(e);
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} else if(e->xbutton.button == Button1) {
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gettimeofday(&now, NULL);
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/* Clear previous selection, logically and visually. */
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if(sel.bx != -1) {
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sel.bx = -1;
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tsetdirt(sel.b.y, sel.e.y);
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@ -742,6 +781,30 @@ bpress(XEvent *e) {
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sel.type = SEL_REGULAR;
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sel.ex = sel.bx = x2col(e->xbutton.x);
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sel.ey = sel.by = y2row(e->xbutton.y);
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/*
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* Snap handling.
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* If user clicks are fasst enough (e.g. below timeouts),
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* we ignore if his hand slipped left or down and accidentally selected more;
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* we are just snapping to whatever we're snapping.
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*/
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if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
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/* Snap to line */
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sel.snap = SNAP_LINE;
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} else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
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sel.snap = SNAP_WORD;
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} else {
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sel.snap = 0;
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}
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selsnap(sel.snap, &sel.bx, &sel.by, -1);
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selsnap(sel.snap, &sel.ex, &sel.ey, 1);
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sel.b.x = sel.bx, sel.b.y = sel.by, sel.e.x = sel.ex, sel.e.y = sel.ey;
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/* Draw selection, unless it's regular and we don't want to make clicks visible */
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if (sel.snap != 0) {
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tsetdirt(sel.b.y, sel.e.y);
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draw();
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}
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sel.tclick2 = sel.tclick1;
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sel.tclick1 = now;
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} else if(e->xbutton.button == Button4) {
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ttywrite("\031", 1);
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} else if(e->xbutton.button == Button5) {
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@ -907,8 +970,6 @@ xsetsel(char *str) {
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void
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brelease(XEvent *e) {
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struct timeval now;
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if(IS_SET(MODE_MOUSE)) {
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mousereport(e);
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return;
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@ -922,35 +983,10 @@ brelease(XEvent *e) {
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term.dirty[sel.ey] = 1;
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if(sel.bx == sel.ex && sel.by == sel.ey) {
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sel.bx = -1;
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gettimeofday(&now, NULL);
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if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
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/* triple click on the line */
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sel.b.x = sel.bx = 0;
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sel.e.x = sel.ex = term.col;
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sel.b.y = sel.e.y = sel.ey;
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selcopy();
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} else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
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/* double click to select word */
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sel.bx = sel.ex;
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while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].c[0] != ' ') {
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sel.bx--;
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}
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sel.b.x = sel.bx;
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while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].c[0] != ' ') {
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sel.ex++;
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}
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sel.e.x = sel.ex;
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sel.b.y = sel.e.y = sel.ey;
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selcopy();
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}
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} else {
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selcopy();
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}
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}
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memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
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gettimeofday(&sel.tclick1, NULL);
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}
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void
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