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Add support for passing variables up to X11 via window properties; done by
[spectrwm.git] / scrotwm.c
index 7bf77c4..fbcbff3 100644 (file)
--- a/scrotwm.c
+++ b/scrotwm.c
 #define        SWM_D_MOVE              0x0010
 #define        SWM_D_STACK             0x0020
 #define        SWM_D_MOUSE             0x0040
+#define        SWM_D_PROP              0x0080
+
 
 u_int32_t              swm_debug = 0
                            | SWM_D_MISC
@@ -109,6 +111,7 @@ u_int32_t           swm_debug = 0
                            | SWM_D_FOCUS
                            | SWM_D_MOVE
                            | SWM_D_STACK
+                           | SWM_D_PROP
                            ;
 #else
 #define DPRINTF(x...)
@@ -125,6 +128,12 @@ u_int32_t          swm_debug = 0
 #define WIDTH(r)       (r)->g.w        
 #define HEIGHT(r)      (r)->g.h
 
+#ifndef SWM_LIB
+#define SWM_LIB                "/usr/X11R6/lib/swmhack.so"
+#endif
+
+#define SWM_PROPLEN    (16)
+
 char                   **start_argv;
 Atom                   astate;
 int                    (*xerrorxlib)(Display *, XErrorEvent *);
@@ -146,6 +155,7 @@ char                        *bar_argv[] = { NULL, NULL };
 int                    bar_pipe[2];
 char                   bar_ext[SWM_BAR_MAX];
 sig_atomic_t           bar_alarm = 0;
+int                    bar_delay = 30;
 int                    bar_enabled = 1;
 int                    bar_extra = 1;
 int                    bar_extra_running = 0;
@@ -194,7 +204,6 @@ struct swm_region {
 }; 
 TAILQ_HEAD(swm_region_list, swm_region);
 
-
 struct ws_win {
        TAILQ_ENTRY(ws_win)     entry;
        Window                  id;
@@ -412,6 +421,8 @@ conf_load(char *filename)
                                asprintf(&bar_fonts[0], "%s", val);
                        else if (!strncmp(var, "bar_action", strlen("bar_action")))
                                asprintf(&bar_argv[0], "%s", val);
+                       else if (!strncmp(var, "bar_delay", strlen("bar_delay")))
+                               bar_delay = atoi(val);
                        else
                                goto bad;
                        break;
@@ -534,8 +545,7 @@ bar_update(void)
                }
        }
        XSync(display, False);
-
-       alarm(60);
+       alarm(bar_delay);
 }
 
 void
@@ -739,8 +749,8 @@ root_to_region(Window root)
        } else {
                /* otherwise, choose a region based on pointer location */
                TAILQ_FOREACH(r, &screens[i].rl, entry) {
-                       if (x > X(r) && x < X(r) + WIDTH(r) &&
-                           y > Y(r) && y < Y(r) + HEIGHT(r))
+                       if (x >= X(r) && x <= X(r) + WIDTH(r) &&
+                           y >= Y(r) && y <= Y(r) + HEIGHT(r))
                                break;
                }
 
@@ -774,8 +784,14 @@ spawn(struct swm_region *r, union arg *args)
         */
        if (fork() == 0) {
                if (fork() == 0) {
+                       char *ret;
                        if (display)
                                close(ConnectionNumber(display));
+                       setenv("LD_PRELOAD", SWM_LIB, 1);
+                       if (asprintf(&ret, "%d", r->ws->idx))
+                               setenv("_SWM_WS", ret, 1);
+                       if (asprintf(&ret, "%d", getpid()))
+                               setenv("_SWM_PID", ret, 1);
                        setsid();
                        execvp(args->argv[0], args->argv);
                        fprintf(stderr, "execvp failed\n");
@@ -786,7 +802,6 @@ spawn(struct swm_region *r, union arg *args)
        wait(0);
 }
 
-
 void
 spawnmenu(struct swm_region *r, union arg *args)
 {
@@ -1107,7 +1122,6 @@ stack_floater(struct ws_win *win, struct swm_region *r)
        XConfigureWindow(display, win->id, mask, &wc);
 }
 
-
 void
 vertical_config(struct workspace *ws, int id)
 {
@@ -1200,6 +1214,9 @@ vertical_stack(struct workspace *ws, struct swm_geometry *g) {
                        win->g.h = wc.height = gg.h;
                        mask = CWX | CWY | CWWidth | CWHeight | CWBorderWidth;
                        XConfigureWindow(display, win->id, mask, &wc);
+                       /*
+                       fprintf(stderr, "vertical_stack: win %d x %d y %d w %d h %d bw %d\n", win->id, win->g.x, win->g.y, win->g.w , win->g.h, wc.border_width);
+                       */
                }
 
                XMapRaised(display, win->id);
@@ -1211,7 +1228,6 @@ vertical_stack(struct workspace *ws, struct swm_geometry *g) {
                focus_win(winfocus); /* has to be done outside of the loop */
 }
 
-
 void
 horizontal_config(struct workspace *ws, int id)
 {
@@ -1366,6 +1382,8 @@ send_to_ws(struct swm_region *r, union arg *args)
        int                     wsid = args->id;
        struct ws_win           *win = cur_focus;
        struct workspace        *ws, *nws;
+       Atom                    ws_idx_atom = 0;
+       unsigned char           ws_idx_str[SWM_PROPLEN];
 
        DNPRINTF(SWM_D_MOVE, "send_to_ws: win: %lu\n", win->id);
 
@@ -1386,6 +1404,16 @@ send_to_ws(struct swm_region *r, union arg *args)
        TAILQ_INSERT_TAIL(&nws->winlist, win, entry);
        win->ws = nws;
 
+       /* Try to update the window's workspace property */
+       ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
+       if (ws_idx_atom &&
+           snprintf(ws_idx_str, SWM_PROPLEN, "%d", nws->idx) < SWM_PROPLEN) {
+               DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
+                   ws_idx_str);
+               XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
+                   PropModeReplace, ws_idx_str, SWM_PROPLEN);
+       }
+
        if (count_win(nws, 1) == 1)
                nws->focus = win;
        ws->restack = 1;
@@ -1613,23 +1641,48 @@ set_win_state(struct ws_win *win, long state)
 }
 
 struct ws_win *
-manage_window(Window id, struct workspace *ws)
+manage_window(Window id)
 {
        Window                  trans;
+       struct workspace        *ws;
        struct ws_win           *win;
        XClassHint              ch;
+       int                     format;
+       unsigned long           nitems, bytes;
+       Atom                    ws_idx_atom = 0, type;
+       unsigned char           ws_idx_str[SWM_PROPLEN], *prop = NULL;
+       struct swm_region       *r;
 
-       TAILQ_FOREACH(win, &ws->winlist, entry) {
-               if (win->id == id)
+       if ((win = find_window(id)) != NULL)
                        return (win);   /* already being managed */
-       }
 
        if ((win = calloc(1, sizeof(struct ws_win))) == NULL)
                errx(1, "calloc: failed to allocate memory for new window");
 
+       ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
+       if (ws_idx_atom)
+               XGetWindowProperty(display, id, ws_idx_atom, 0, SWM_PROPLEN,
+                   False, XA_STRING, &type, &format, &nitems, &bytes, &prop);
+
+       XGetWindowAttributes(display, id, &win->wa);
+       r = root_to_region(win->wa.root);
+       /* If the window was managed before, put it in the same workspace */
+       if (prop) {
+               int             ws_idx;
+               const char      *errstr;
+
+               DNPRINTF(SWM_D_PROP, "got property _SWM_WS=%s\n", prop);
+               ws_idx = strtonum(prop, 0, 9, &errstr);
+               if (errstr)
+                       DNPRINTF(SWM_D_EVENT, "window idx is %s: %s",
+                           errstr, prop);
+               ws = &r->s->ws[ws_idx];
+       } else
+               ws = r->ws;
+
        win->id = id;
        win->ws = ws;
-       win->s = ws->r->s;      /* this never changes */
+       win->s = r->s;  /* this never changes */
        TAILQ_INSERT_TAIL(&ws->winlist, win, entry);
 
        /* make new win focused */
@@ -1641,12 +1694,24 @@ manage_window(Window id, struct workspace *ws)
                DNPRINTF(SWM_D_MISC, "manage_window: win %u transient %u\n",
                    (unsigned)win->id, win->transient);
        }
-       XGetWindowAttributes(display, id, &win->wa);
        win->g.w = win->wa.width;
        win->g.h = win->wa.height;
        win->g.x = win->wa.x;
        win->g.y = win->wa.y;
 
+       if (ws_idx_atom && prop == NULL &&
+           snprintf(ws_idx_str, SWM_PROPLEN, "%d", ws->idx) < SWM_PROPLEN) {
+               DNPRINTF(SWM_D_PROP, "setting property _SWM_WS to %s\n",
+                   ws_idx_str);
+               XChangeProperty(display, win->id, ws_idx_atom, XA_STRING, 8,
+                   PropModeReplace, ws_idx_str, SWM_PROPLEN);
+       }
+       XFree(prop);
+
+       /*
+       fprintf(stderr, "manage window: %d x %d y %d w %d h %d\n", win->id, win->g.x, win->g.y, win->g.w, win->g.h);
+       */
+
        /* XXX make this a table */
        bzero(&ch, sizeof ch);
        if (XGetClassHint(display, win->id, &ch)) {
@@ -1673,7 +1738,7 @@ configurerequest(XEvent *e)
 {
        XConfigureRequestEvent  *ev = &e->xconfigurerequest;
        struct ws_win           *win;
-       int                     new = 1;
+       int                     new = 0;
        XWindowChanges          wc;
 
        if ((win = find_window(ev->window)) == NULL)
@@ -1682,6 +1747,10 @@ configurerequest(XEvent *e)
        if (new) {
                DNPRINTF(SWM_D_EVENT, "configurerequest: new window: %lu\n",
                    ev->window);
+               /*
+               fprintf(stderr, "configurerequest: new window: %lu x %d y %d w %d h %d bw %d s %d sm %d\n",
+                   ev->window, ev->x, ev->y, ev->width, ev->height, ev->border_width, ev->above, ev->detail);
+               */
                bzero(&wc, sizeof wc);
                wc.x = ev->x;
                wc.y = ev->y;
@@ -1692,6 +1761,10 @@ configurerequest(XEvent *e)
                wc.stack_mode = ev->detail;
                XConfigureWindow(display, ev->window, ev->value_mask, &wc);
        } else {
+               /*
+               fprintf(stderr, "configurerequest: change window: %lu\n",
+                   ev->window);
+               */
                DNPRINTF(SWM_D_EVENT, "configurerequest: change window: %lu\n",
                    ev->window);
                if (win->floating) {
@@ -1802,7 +1875,6 @@ maprequest(XEvent *e)
 {
        XMapRequestEvent        *ev = &e->xmaprequest;
        XWindowAttributes       wa;
-       struct swm_region       *r;
 
        DNPRINTF(SWM_D_EVENT, "maprequest: window: %lu\n",
            e->xmaprequest.window);
@@ -1811,8 +1883,7 @@ maprequest(XEvent *e)
                return;
        if (wa.override_redirect)
                return;
-       r = root_to_region(wa.root);
-       manage_window(e->xmaprequest.window, r->ws);
+       manage_window(e->xmaprequest.window);
        stack();
 }
 
@@ -1951,11 +2022,16 @@ setup_screens(void)
        int                     ncrtc = 0, w = 0;
         int                    i, j, k;
        struct workspace        *ws;
+       int                     ws_idx_atom;
+
 
        if ((screens = calloc(ScreenCount(display),
             sizeof(struct swm_screen))) == NULL)
                errx(1, "calloc: screens");
 
+       ws_idx_atom = XInternAtom(display, "_SWM_WS", False);
+       
+
        /* map physical screens */
        for (i = 0; i < ScreenCount(display); i++) {
                DNPRINTF(SWM_D_WS, "setup_screens: init screen %d\n", i);
@@ -2014,7 +2090,7 @@ setup_screens(void)
                else 
                        ncrtc = sr->ncrtc;
 
-               for (c = 0; c < ncrtc; c++) {
+               for (c = 0, ci = NULL; c < ncrtc; c++) {
                        ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
                        if (ci->noutput == 0)
                                continue;
@@ -2028,7 +2104,8 @@ setup_screens(void)
                                    ci->x, ci->y, ci->width, ci->height);
                        w++;
                }
-               XRRFreeCrtcInfo(ci);
+               if (ci)
+                       XRRFreeCrtcInfo(ci);
                XRRFreeScreenResources(sr);
 #else
                new_region(&screens[i], &screens[i].ws[w], 0, 0,
@@ -2050,7 +2127,7 @@ setup_screens(void)
 
                        if (wa.map_state == IsViewable ||
                            getstate(wins[i]) == NormalState)
-                               manage_window(wins[i], r->ws);
+                               manage_window(wins[i]);
                }
                /* transient windows */
                for (i = 0; i < no; i++) {
@@ -2060,7 +2137,7 @@ setup_screens(void)
                        if (XGetTransientForHint(display, wins[i], &d1) &&
                            (wa.map_state == IsViewable || getstate(wins[i]) ==
                            NormalState))
-                               manage_window(wins[i], r->ws);
+                               manage_window(wins[i]);
                 }
                 if (wins) {
                         XFree(wins);