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Move terminal-related selection logic into st.c

Browse source 
The front-end determines information about mouse clicks and motion, and
the terminal handles the actual selection start/extend/dirty logic by
row and column.

While we're in the neighborhood, we'll also rename getbuttoninfo() to
mousesel() which is, at least, less wrong.

Signed-off-by: Devin J. Pohly <djpohly@gmail.com>
This commit is contained in:
Devin J. Pohly 2018-02-21 23:29:41 -06:00
parent 5683b1f80c
commit bcb5d3adbe
3 changed files with 54 additions and 41 deletions
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37
st.c
View file

@ -140,6 +140,7 @@ static void tscrollup(int, int);
static void tscrolldown(int, int);
static void tsetattr(int *, int);
static void tsetchar(Rune, Glyph *, int, int);
static void tsetdirt(int, int);
static void tsetscroll(int, int);
static void tswapscreen(void);
static void tsetmode(int, int, int *, int);
@ -384,6 +385,42 @@ tlinelen(int y)
return i;
}
void
selstart(int col, int row, int snap)
{
selclear();
sel.mode = SEL_EMPTY;
sel.type = SEL_REGULAR;
sel.snap = snap;
sel.oe.x = sel.ob.x = col;
sel.oe.y = sel.ob.y = row;
selnormalize();
if (sel.snap != 0)
sel.mode = SEL_READY;
tsetdirt(sel.nb.y, sel.ne.y);
}
void
selextend(int col, int row, int type)
{
int oldey, oldex, oldsby, oldsey, oldtype;
oldey = sel.oe.y;
oldex = sel.oe.x;
oldsby = sel.nb.y;
oldsey = sel.ne.y;
oldtype = sel.type;
sel.alt = IS_SET(MODE_ALTSCREEN);
sel.oe.x = col;
sel.oe.y = row;
selnormalize();
sel.type = type;
if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type)
tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
}
void
selnormalize(void)
{

3
st.h
View file

@ -172,7 +172,6 @@ void toggleprinter(const Arg *);
int tattrset(int);
void tnew(int, int);
void tresize(int, int);
void tsetdirt(int, int);
void tsetdirtattr(int);
void ttynew(char *, char *, char **);
size_t ttyread(void);
@ -184,6 +183,8 @@ void resettitle(void);
void selclear(void);
void selinit(void);
void selstart(int, int, int);
void selextend(int, int, int);
void selnormalize(void);
int selected(int, int);
char *getsel(void);

55
x.c
View file

@ -157,7 +157,7 @@ static void selnotify(XEvent *);
static void selclear_(XEvent *);
static void selrequest(XEvent *);
static void setsel(char *, Time);
static void getbuttoninfo(XEvent *);
static void mousesel(XEvent *);
static void mousereport(XEvent *);
static char *kmap(KeySym, uint);
static int match(uint, uint);
@ -313,24 +313,19 @@ y2row(int y)
}
void
getbuttoninfo(XEvent *e)
mousesel(XEvent *e)
{
int type;
int type, seltype = SEL_REGULAR;
uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
sel.alt = IS_SET(MODE_ALTSCREEN);
sel.oe.x = x2col(e->xbutton.x);
sel.oe.y = y2row(e->xbutton.y);
selnormalize();
sel.type = SEL_REGULAR;
for (type = 1; type < LEN(selmasks); ++type) {
if (match(selmasks[type], state)) {
sel.type = type;
seltype = type;
break;
}
}
selextend(x2col(e->xbutton.x), y2row(e->xbutton.y), seltype);
}
void
@ -402,6 +397,7 @@ bpress(XEvent *e)
{
struct timespec now;
MouseShortcut *ms;
int snap;
if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
mousereport(e);
@ -417,33 +413,22 @@ bpress(XEvent *e)
}
if (e->xbutton.button == Button1) {
clock_gettime(CLOCK_MONOTONIC, &now);
/* Clear previous selection, logically and visually. */
selclear_(NULL);
sel.mode = SEL_EMPTY;
sel.type = SEL_REGULAR;
sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
/*
* If the user clicks below predefined timeouts specific
* snapping behaviour is exposed.
*/
clock_gettime(CLOCK_MONOTONIC, &now);
if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
sel.snap = SNAP_LINE;
snap = SNAP_LINE;
} else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
sel.snap = SNAP_WORD;
snap = SNAP_WORD;
} else {
sel.snap = 0;
snap = 0;
}
selnormalize();
if (sel.snap != 0)
sel.mode = SEL_READY;
tsetdirt(sel.nb.y, sel.ne.y);
xsel.tclick2 = xsel.tclick1;
xsel.tclick1 = now;
selstart(x2col(e->xbutton.x), y2row(e->xbutton.y), snap);
}
}
@ -649,20 +634,17 @@ brelease(XEvent *e)
selpaste(NULL);
} else if (e->xbutton.button == Button1) {
if (sel.mode == SEL_READY) {
getbuttoninfo(e);
mousesel(e);
setsel(getsel(), e->xbutton.time);
} else
selclear_(NULL);
sel.mode = SEL_IDLE;
tsetdirt(sel.nb.y, sel.ne.y);
}
}
void
bmotion(XEvent *e)
{
int oldey, oldex, oldsby, oldsey;
if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
mousereport(e);
return;
@ -672,14 +654,7 @@ bmotion(XEvent *e)
return;
sel.mode = SEL_READY;
oldey = sel.oe.y;
oldex = sel.oe.x;
oldsby = sel.nb.y;
oldsey = sel.ne.y;
getbuttoninfo(e);
if (oldey != sel.oe.y || oldex != sel.oe.x)
tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
mousesel(e);
}
void