#include <X11/Xft/Xft.h>
#include <X11/XKBlib.h>
-static char *argv0;
+char *argv0;
#include "arg.h"
#include "st.h"
#include "win.h"
/* X modifiers */
#define XK_ANY_MOD UINT_MAX
#define XK_NO_MOD 0
-#define XK_SWITCH_MOD (1<<13)
+#define XK_SWITCH_MOD (1<<13|1<<14)
/* function definitions used in config.h */
static void clipcopy(const Arg *);
Window win;
Drawable buf;
GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
- Atom xembed, wmdeletewin, netwmname, netwmpid;
+ Atom xembed, wmdeletewin, netwmname, netwmiconname, netwmpid;
struct {
XIM xim;
XIC xic;
static void xdrawglyph(Glyph, int, int);
static void xclear(int, int, int, int);
static int xgeommasktogravity(int);
-static void ximopen(Display *);
+static int ximopen(Display *);
static void ximinstantiate(Display *, XPointer, XPointer);
static void ximdestroy(XIM, XPointer, XPointer);
+static int xicdestroy(XIC, XPointer, XPointer);
static void xinit(int, int);
static void cresize(int, int);
static void xresize(int, int);
static void xhints(void);
static int xloadcolor(int, const char *, Color *);
static int xloadfont(Font *, FcPattern *);
-static void xloadfonts(char *, double);
+static void xloadfonts(const char *, double);
static void xunloadfont(Font *);
static void xunloadfonts(void);
static void xsetenv(void);
static void cmessage(XEvent *);
static void resize(XEvent *);
static void focus(XEvent *);
+static uint buttonmask(uint);
static int mouseaction(XEvent *, uint);
static void brelease(XEvent *);
static void bpress(XEvent *);
static char *opt_name = NULL;
static char *opt_title = NULL;
-static int oldbutton = 3; /* button event on startup: 3 = release */
+static uint buttons; /* bit field of pressed buttons */
+static int cursorblinks = 0;
void
clipcopy(const Arg *dummy)
void
mousereport(XEvent *e)
{
- int len, x = evcol(e), y = evrow(e),
- button = e->xbutton.button, state = e->xbutton.state;
+ int len, btn, code;
+ int x = evcol(e), y = evrow(e);
+ int state = e->xbutton.state;
char buf[40];
static int ox, oy;
- /* from urxvt */
- if (e->xbutton.type == MotionNotify) {
+ if (e->type == MotionNotify) {
if (x == ox && y == oy)
return;
if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
return;
- /* MOUSE_MOTION: no reporting if no button is pressed */
- if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
+ /* MODE_MOUSEMOTION: no reporting if no button is pressed */
+ if (IS_SET(MODE_MOUSEMOTION) && buttons == 0)
return;
-
- button = oldbutton + 32;
- ox = x;
- oy = y;
+ /* Set btn to lowest-numbered pressed button, or 12 if no
+ * buttons are pressed. */
+ for (btn = 1; btn <= 11 && !(buttons & (1<<(btn-1))); btn++)
+ ;
+ code = 32;
} else {
- if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
- button = 3;
- } else {
- button -= Button1;
- if (button >= 3)
- button += 64 - 3;
- }
- if (e->xbutton.type == ButtonPress) {
- oldbutton = button;
- ox = x;
- oy = y;
- } else if (e->xbutton.type == ButtonRelease) {
- oldbutton = 3;
+ btn = e->xbutton.button;
+ /* Only buttons 1 through 11 can be encoded */
+ if (btn < 1 || btn > 11)
+ return;
+ if (e->type == ButtonRelease) {
/* MODE_MOUSEX10: no button release reporting */
if (IS_SET(MODE_MOUSEX10))
return;
- if (button == 64 || button == 65)
+ /* Don't send release events for the scroll wheel */
+ if (btn == 4 || btn == 5)
return;
}
+ code = 0;
}
+ ox = x;
+ oy = y;
+
+ /* Encode btn into code. If no button is pressed for a motion event in
+ * MODE_MOUSEMANY, then encode it as a release. */
+ if ((!IS_SET(MODE_MOUSESGR) && e->type == ButtonRelease) || btn == 12)
+ code += 3;
+ else if (btn >= 8)
+ code += 128 + btn - 8;
+ else if (btn >= 4)
+ code += 64 + btn - 4;
+ else
+ code += btn - 1;
+
if (!IS_SET(MODE_MOUSEX10)) {
- button += ((state & ShiftMask ) ? 4 : 0)
- + ((state & Mod4Mask ) ? 8 : 0)
- + ((state & ControlMask) ? 16 : 0);
+ code += ((state & ShiftMask ) ? 4 : 0)
+ + ((state & Mod1Mask ) ? 8 : 0) /* meta key: alt */
+ + ((state & ControlMask) ? 16 : 0);
}
if (IS_SET(MODE_MOUSESGR)) {
len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
- button, x+1, y+1,
- e->xbutton.type == ButtonRelease ? 'm' : 'M');
+ code, x+1, y+1,
+ e->type == ButtonRelease ? 'm' : 'M');
} else if (x < 223 && y < 223) {
len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
- 32+button, 32+x+1, 32+y+1);
+ 32+code, 32+x+1, 32+y+1);
} else {
return;
}
ttywrite(buf, len, 0);
}
+uint
+buttonmask(uint button)
+{
+ return button == Button1 ? Button1Mask
+ : button == Button2 ? Button2Mask
+ : button == Button3 ? Button3Mask
+ : button == Button4 ? Button4Mask
+ : button == Button5 ? Button5Mask
+ : 0;
+}
+
int
mouseaction(XEvent *e, uint release)
{
MouseShortcut *ms;
+ /* ignore Button<N>mask for Button<N> - it's set on release */
+ uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
+
for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
if (ms->release == release &&
ms->button == e->xbutton.button &&
- (match(ms->mod, e->xbutton.state) || /* exact or forced */
- match(ms->mod, e->xbutton.state & ~forcemousemod))) {
+ (match(ms->mod, state) || /* exact or forced */
+ match(ms->mod, state & ~forcemousemod))) {
ms->func(&(ms->arg));
return 1;
}
void
bpress(XEvent *e)
{
+ int btn = e->xbutton.button;
struct timespec now;
int snap;
+ if (1 <= btn && btn <= 11)
+ buttons |= 1 << (btn-1);
+
if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
mousereport(e);
return;
if (mouseaction(e, 0))
return;
- if (e->xbutton.button == Button1) {
+ if (btn == Button1) {
/*
* If the user clicks below predefined timeouts specific
* snapping behaviour is exposed.
void
brelease(XEvent *e)
{
+ int btn = e->xbutton.button;
+
+ if (1 <= btn && btn <= 11)
+ buttons &= ~(1 << (btn-1));
+
if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
mousereport(e);
return;
if (mouseaction(e, 1))
return;
- if (e->xbutton.button == Button1)
+ if (btn == Button1)
mousesel(e, 1);
}
loaded = 1;
}
+int
+xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b)
+{
+ if (!BETWEEN(x, 0, dc.collen - 1))
+ return 1;
+
+ *r = dc.col[x].color.red >> 8;
+ *g = dc.col[x].color.green >> 8;
+ *b = dc.col[x].color.blue >> 8;
+
+ return 0;
+}
+
int
xsetcolorname(int x, const char *name)
{
Color ncolor;
- if (!BETWEEN(x, 0, dc.collen))
+ if (!BETWEEN(x, 0, dc.collen - 1))
return 1;
if (!xloadcolor(x, name, &ncolor))
}
void
-xloadfonts(char *fontstr, double fontsize)
+xloadfonts(const char *fontstr, double fontsize)
{
FcPattern *pattern;
double fontval;
if (fontstr[0] == '-')
pattern = XftXlfdParse(fontstr, False, False);
else
- pattern = FcNameParse((FcChar8 *)fontstr);
+ pattern = FcNameParse((const FcChar8 *)fontstr);
if (!pattern)
die("can't open font %s\n", fontstr);
xunloadfont(&dc.ibfont);
}
-void
+int
ximopen(Display *dpy)
{
- XIMCallback destroy = { .client_data = NULL, .callback = ximdestroy };
+ XIMCallback imdestroy = { .client_data = NULL, .callback = ximdestroy };
+ XICCallback icdestroy = { .client_data = NULL, .callback = xicdestroy };
- if ((xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
- XSetLocaleModifiers("@im=local");
- if ((xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
- XSetLocaleModifiers("@im=");
- if ((xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL)
- die("XOpenIM failed. Could not open input device.\n");
- }
- }
- if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &destroy, NULL) != NULL)
- die("XSetIMValues failed. Could not set input method value.\n");
- xw.xic = XCreateIC(xw.ime.xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
- XNClientWindow, xw.win, XNFocusWindow, xw.win, NULL);
- if (xw.xic == NULL)
- die("XCreateIC failed. Could not obtain input method.\n");
+ xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
+ if (xw.ime.xim == NULL)
+ return 0;
+
+ if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &imdestroy, NULL))
+ fprintf(stderr, "XSetIMValues: "
+ "Could not set XNDestroyCallback.\n");
xw.ime.spotlist = XVaCreateNestedList(0, XNSpotLocation, &xw.ime.spot,
NULL);
+
+ if (xw.ime.xic == NULL) {
+ xw.ime.xic = XCreateIC(xw.ime.xim, XNInputStyle,
+ XIMPreeditNothing | XIMStatusNothing,
+ XNClientWindow, xw.win,
+ XNDestroyCallback, &icdestroy,
+ NULL);
+ }
+ if (xw.ime.xic == NULL)
+ fprintf(stderr, "XCreateIC: Could not create input context.\n");
+
+ return 1;
}
void
ximinstantiate(Display *dpy, XPointer client, XPointer call)
{
- ximopen(dpy);
- XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
- ximinstantiate, NULL);
+ if (ximopen(dpy))
+ XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
+ ximinstantiate, NULL);
}
void
ximdestroy(XIM xim, XPointer client, XPointer call)
{
xw.ime.xim = NULL;
- xw.ime.xic = NULL;
XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
- ximinstantiate, NULL);
+ ximinstantiate, NULL);
XFree(xw.ime.spotlist);
}
+int
+xicdestroy(XIC xim, XPointer client, XPointer call)
+{
+ xw.ime.xic = NULL;
+ return 1;
+}
+
void
xinit(int cols, int rows)
{
xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
/* input methods */
- ximopen(xw.dpy);
-
- /* white cursor, black outline */
- cursor = XCreateFontCursor(xw.dpy, mouseshape);
- XDefineCursor(xw.dpy, xw.win, cursor);
-
- if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
- xmousefg.red = 0xffff;
- xmousefg.green = 0xffff;
- xmousefg.blue = 0xffff;
- }
-
- if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
- xmousebg.red = 0x0000;
- xmousebg.green = 0x0000;
- xmousebg.blue = 0x0000;
+ if (!ximopen(xw.dpy)) {
+ XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
+ ximinstantiate, NULL);
}
- XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
-
xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
+ xw.netwmiconname = XInternAtom(xw.dpy, "_NET_WM_ICON_NAME", False);
XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
XRenderColor colfg, colbg;
XRectangle r;
- /* Fallback on color display for attributes not supported by the font */
- if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
- if (dc.ibfont.badslant || dc.ibfont.badweight)
- base.fg = defaultattr;
- } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
- (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
+ if (base.mode & ATTR_ITALIC) {
base.fg = defaultattr;
}
/* Render underline and strikethrough. */
if (base.mode & ATTR_UNDERLINE) {
- XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
+ XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent * chscale + 1,
width, 1);
}
if (base.mode & ATTR_STRUCK) {
- XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
+ XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent * chscale / 3,
width, 1);
}
/* draw the new one */
if (IS_SET(MODE_FOCUSED)) {
switch (win.cursor) {
- case 7: /* st extension: snowman (U+2603) */
- g.u = 0x2603;
- case 0: /* Blinking Block */
- case 1: /* Blinking Block (Default) */
- case 2: /* Steady Block */
+ case 0: /* Blinking block */
+ case 1: /* Blinking block (default) */
+ if (IS_SET(MODE_BLINK))
+ break;
+ /* FALLTHROUGH */
+ case 2: /* Steady block */
xdrawglyph(g, cx, cy);
break;
- case 3: /* Blinking Underline */
- case 4: /* Steady Underline */
+ case 3: /* Blinking underline */
+ if (IS_SET(MODE_BLINK))
+ break;
+ /* FALLTHROUGH */
+ case 4: /* Steady underline */
XftDrawRect(xw.draw, &drawcol,
borderpx + cx * win.cw,
borderpx + (cy + 1) * win.ch - \
win.cw, cursorthickness);
break;
case 5: /* Blinking bar */
+ if (IS_SET(MODE_BLINK))
+ break;
+ /* FALLTHROUGH */
case 6: /* Steady bar */
XftDrawRect(xw.draw, &drawcol,
borderpx + cx * win.cw,
borderpx + cy * win.ch,
cursorthickness, win.ch);
break;
+ case 7: /* Blinking st cursor */
+ if (IS_SET(MODE_BLINK))
+ break;
+ /* FALLTHROUGH */
+ case 8: /* Steady st cursor */
+ g.u = 0x2603; /* snowman (U+2603) */
+ xdrawglyph(g, cx, cy);
+ break;
}
} else {
XftDrawRect(xw.draw, &drawcol,
setenv("WINDOWID", buf, 1);
}
+void
+xseticontitle(char *p)
+{
+ XTextProperty prop;
+ DEFAULT(p, opt_title);
+
+ if (p[0] == '\0')
+ p = opt_title;
+
+ if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
+ &prop) != Success)
+ return;
+ XSetWMIconName(xw.dpy, xw.win, &prop);
+ XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmiconname);
+ XFree(prop.value);
+}
+
void
xsettitle(char *p)
{
XTextProperty prop;
DEFAULT(p, opt_title);
- Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
- &prop);
+ if (p[0] == '\0')
+ p = opt_title;
+
+ if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
+ &prop) != Success)
+ return;
XSetWMName(xw.dpy, xw.win, &prop);
XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
XFree(prop.value);
int
xsetcursor(int cursor)
{
- DEFAULT(cursor, 1);
- if (!BETWEEN(cursor, 0, 6))
+ if (!BETWEEN(cursor, 0, 8)) /* 7-8: st extensions */
return 1;
win.cursor = cursor;
+ cursorblinks = win.cursor == 0 || win.cursor == 1 ||
+ win.cursor == 3 || win.cursor == 5 ||
+ win.cursor == 7;
return 0;
}
kpress(XEvent *ev)
{
XKeyEvent *e = &ev->xkey;
- KeySym ksym;
+ KeySym ksym = NoSymbol;
char buf[64], *customkey;
int len;
Rune c;
if (IS_SET(MODE_KBDLOCK))
return;
- len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status);
+ if (xw.ime.xic) {
+ len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status);
+ if (status == XBufferOverflow)
+ return;
+ } else {
+ len = XLookupString(e, buf, sizeof buf, &ksym, NULL);
+ }
/* 1. shortcuts */
for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
if (ksym == bp->keysym && match(bp->mod, e->state)) {
XEvent ev;
int w = win.w, h = win.h;
fd_set rfd;
- int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
- int ttyfd;
- struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
- long deltatime;
+ int xfd = XConnectionNumber(xw.dpy), ttyfd, xev, drawing;
+ struct timespec seltv, *tv, now, lastblink, trigger;
+ double timeout;
/* Waiting for window mapping */
do {
ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
cresize(w, h);
- clock_gettime(CLOCK_MONOTONIC, &last);
- lastblink = last;
-
- for (xev = actionfps;;) {
+ for (timeout = -1, drawing = 0, lastblink = (struct timespec){0};;) {
FD_ZERO(&rfd);
FD_SET(ttyfd, &rfd);
FD_SET(xfd, &rfd);
+ if (XPending(xw.dpy))
+ timeout = 0; /* existing events might not set xfd */
+
+ seltv.tv_sec = timeout / 1E3;
+ seltv.tv_nsec = 1E6 * (timeout - 1E3 * seltv.tv_sec);
+ tv = timeout >= 0 ? &seltv : NULL;
+
if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
if (errno == EINTR)
continue;
die("select failed: %s\n", strerror(errno));
}
- if (FD_ISSET(ttyfd, &rfd)) {
- ttyread();
- if (blinktimeout) {
- blinkset = tattrset(ATTR_BLINK);
- if (!blinkset)
- MODBIT(win.mode, 0, MODE_BLINK);
- }
- }
+ clock_gettime(CLOCK_MONOTONIC, &now);
- if (FD_ISSET(xfd, &rfd))
- xev = actionfps;
+ if (FD_ISSET(ttyfd, &rfd))
+ ttyread();
- clock_gettime(CLOCK_MONOTONIC, &now);
- drawtimeout.tv_sec = 0;
- drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
- tv = &drawtimeout;
-
- dodraw = 0;
- if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
- tsetdirtattr(ATTR_BLINK);
- win.mode ^= MODE_BLINK;
- lastblink = now;
- dodraw = 1;
- }
- deltatime = TIMEDIFF(now, last);
- if (deltatime > 1000 / (xev ? xfps : actionfps)) {
- dodraw = 1;
- last = now;
+ xev = 0;
+ while (XPending(xw.dpy)) {
+ xev = 1;
+ XNextEvent(xw.dpy, &ev);
+ if (XFilterEvent(&ev, None))
+ continue;
+ if (handler[ev.type])
+ (handler[ev.type])(&ev);
}
- if (dodraw) {
- while (XPending(xw.dpy)) {
- XNextEvent(xw.dpy, &ev);
- if (XFilterEvent(&ev, None))
- continue;
- if (handler[ev.type])
- (handler[ev.type])(&ev);
+ /*
+ * To reduce flicker and tearing, when new content or event
+ * triggers drawing, we first wait a bit to ensure we got
+ * everything, and if nothing new arrives - we draw.
+ * We start with trying to wait minlatency ms. If more content
+ * arrives sooner, we retry with shorter and shorter periods,
+ * and eventually draw even without idle after maxlatency ms.
+ * Typically this results in low latency while interacting,
+ * maximum latency intervals during `cat huge.txt`, and perfect
+ * sync with periodic updates from animations/key-repeats/etc.
+ */
+ if (FD_ISSET(ttyfd, &rfd) || xev) {
+ if (!drawing) {
+ trigger = now;
+ if (IS_SET(MODE_BLINK)) {
+ win.mode ^= MODE_BLINK;
+ }
+ lastblink = now;
+ drawing = 1;
}
+ timeout = (maxlatency - TIMEDIFF(now, trigger)) \
+ / maxlatency * minlatency;
+ if (timeout > 0)
+ continue; /* we have time, try to find idle */
+ }
- draw();
- XFlush(xw.dpy);
-
- if (xev && !FD_ISSET(xfd, &rfd))
- xev--;
- if (!FD_ISSET(ttyfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
- if (blinkset) {
- if (TIMEDIFF(now, lastblink) \
- > blinktimeout) {
- drawtimeout.tv_nsec = 1000;
- } else {
- drawtimeout.tv_nsec = (1E6 * \
- (blinktimeout - \
- TIMEDIFF(now,
- lastblink)));
- }
- drawtimeout.tv_sec = \
- drawtimeout.tv_nsec / 1E9;
- drawtimeout.tv_nsec %= (long)1E9;
- } else {
- tv = NULL;
- }
+ /* idle detected or maxlatency exhausted -> draw */
+ timeout = -1;
+ if (blinktimeout && (cursorblinks || tattrset(ATTR_BLINK))) {
+ timeout = blinktimeout - TIMEDIFF(now, lastblink);
+ if (timeout <= 0) {
+ if (-timeout > blinktimeout) /* start visible */
+ win.mode |= MODE_BLINK;
+ win.mode ^= MODE_BLINK;
+ tsetdirtattr(ATTR_BLINK);
+ lastblink = now;
+ timeout = blinktimeout;
}
}
+
+ draw();
+ XFlush(xw.dpy);
+ drawing = 0;
}
}
{
xw.l = xw.t = 0;
xw.isfixed = False;
- win.cursor = cursorshape;
+ xsetcursor(cursorshape);
ARGBEGIN {
case 'a':