diff options
| -rw-r--r-- | config.h | 8 | ||||
| -rw-r--r-- | dwm.c | 54 |
2 files changed, 60 insertions, 2 deletions
@@ -164,3 +164,11 @@ static const Button buttons[] = { { ClkTagBar, MODKEY, Button1, tag, {0} }, { ClkTagBar, MODKEY, Button3, toggletag, {0} }, }; + +/* signal definitions */ +/* signum must be greater than 0 */ +/* trigger signals using `xsetroot -name "fsignal:<signum>"` */ +static Signal signals[] = { + /* signum function argument */ + { 1, setlayout, {.v = 0} }, +}; @@ -107,6 +107,12 @@ typedef struct { } Key; typedef struct { + unsigned int signum; + void (*func)(const Arg *); + const Arg arg; +} Signal; + +typedef struct { const char *symbol; void (*arrange)(Monitor *); } Layout; @@ -179,6 +185,7 @@ static void grabbuttons(Client *c, int focused); static void grabkeys(void); static void incnmaster(const Arg *arg); static void keypress(XEvent *e); +static int fake_signal(void); static void killclient(const Arg *arg); static void manage(Window w, XWindowAttributes *wa); static void mappingnotify(XEvent *e); @@ -1077,6 +1084,47 @@ keypress(XEvent *e) keys[i].func(&(keys[i].arg)); } +int +fake_signal(void) +{ + char fsignal[256]; + char indicator[9] = "fsignal:"; + char str_signum[16]; + int i, v, signum; + size_t len_fsignal, len_indicator = strlen(indicator); + + // Get root name property + if (gettextprop(root, XA_WM_NAME, fsignal, sizeof(fsignal))) { + len_fsignal = strlen(fsignal); + + // Check if this is indeed a fake signal + if (len_indicator > len_fsignal ? 0 : strncmp(indicator, fsignal, len_indicator) == 0) { + memcpy(str_signum, &fsignal[len_indicator], len_fsignal - len_indicator); + str_signum[len_fsignal - len_indicator] = '\0'; + + // Convert string value into managable integer + for (i = signum = 0; i < strlen(str_signum); i++) { + v = str_signum[i] - '0'; + if (v >= 0 && v <= 9) { + signum = signum * 10 + v; + } + } + + // Check if a signal was found, and if so handle it + if (signum) + for (i = 0; i < LENGTH(signals); i++) + if (signum == signals[i].signum && signals[i].func) + signals[i].func(&(signals[i].arg)); + + // A fake signal was sent + return 1; + } + } + + // No fake signal was sent, so proceed with update + return 0; +} + void killclient(const Arg *arg) { @@ -1280,8 +1328,10 @@ propertynotify(XEvent *e) Window trans; XPropertyEvent *ev = &e->xproperty; - if ((ev->window == root) && (ev->atom == XA_WM_NAME)) - updatestatus(); + if ((ev->window == root) && (ev->atom == XA_WM_NAME)) { + if (!fake_signal()) + updatestatus(); + } else if (ev->state == PropertyDelete) return; /* ignore */ else if ((c = wintoclient(ev->window))) { |