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Fix toggle_bar not working on empty workspaces.
[spectrwm.git] / spectrwm.c
index 0020f39..423db92 100644 (file)
@@ -279,7 +279,6 @@ volatile sig_atomic_t   restart_wm = 0;
 xcb_timestamp_t                last_event_time = 0;
 int                    outputs = 0;
 int                    other_wm;
-int                    ss_enabled = 0;
 int                    xrandr_support;
 int                    xrandr_eventbase;
 unsigned int           numlockmask = 0;
@@ -349,6 +348,7 @@ double                      dialog_ratio = 0.6;
 char           *bar_argv[] = { NULL, NULL };
 int             bar_pipe[2];
 char            bar_ext[SWM_BAR_MAX];
+char            bar_ext_buf[SWM_BAR_MAX];
 char            bar_vertext[SWM_BAR_MAX];
 int             bar_version = 0;
 int             bar_enabled = 1;
@@ -820,13 +820,14 @@ void       adjust_font(struct ws_win *);
 void    bar_class_name(char *, size_t, struct swm_region *);
 void    bar_class_title_name(char *, size_t, struct swm_region *);
 void    bar_cleanup(struct swm_region *);
+void    bar_extra_setup(void);
 void    bar_extra_stop(void);
+void    bar_extra_update(void);
 void    bar_fmt(const char *, char *, struct swm_region *, size_t);
 void    bar_fmt_expand(char *, size_t);
-void    bar_fmt_print(void);
+void    bar_draw(void);
 void    bar_print(struct swm_region *, const char *);
 void    bar_print_legacy(struct swm_region *, const char *);
-void    bar_refresh(void);
 void    bar_replace(char *, char *, struct swm_region *, size_t);
 void    bar_replace_pad(char *, int *, size_t);
 char *  bar_replace_seq(char *, char *, struct swm_region *, size_t *,
@@ -834,7 +835,6 @@ char *       bar_replace_seq(char *, char *, struct swm_region *, size_t *,
 void    bar_setup(struct swm_region *);
 void    bar_title_name(char *, size_t, struct swm_region *);
 void    bar_toggle(struct swm_region *, union arg *);
-void    bar_update(void);
 void    bar_urgent(char *, size_t);
 void    bar_window_float(char *, size_t, struct swm_region *);
 void    bar_window_name(char *, size_t, struct swm_region *);
@@ -2160,8 +2160,9 @@ bar_fmt_expand(char *fmtexp, size_t sz)
 #endif
 }
 
+/* Redraws the bar; need to follow with xcb_flush() or focus_flush(). */
 void
-bar_fmt_print(void)
+bar_draw(void)
 {
        char                    fmtexp[SWM_BAR_MAX], fmtnew[SWM_BAR_MAX];
        char                    fmtrep[SWM_BAR_MAX];
@@ -2177,7 +2178,7 @@ bar_fmt_print(void)
                        if (r->bar == NULL)
                                continue;
 
-                       if (r->ws->bar_enabled)
+                       if (bar_enabled && r->ws->bar_enabled)
                                xcb_map_window(conn, r->bar->id);
                        else {
                                xcb_unmap_window(conn, r->bar->id);
@@ -2194,21 +2195,40 @@ bar_fmt_print(void)
        }
 }
 
+/* Reads external script output; call when stdin is readable. */
 void
-bar_update(void)
+bar_extra_update(void)
 {
-       size_t                  len;
-       char                    *b;
+       size_t          len;
+       char            b[SWM_BAR_MAX];
+       int             redraw = 0;
 
        if (bar_enabled && bar_extra && bar_extra_running) {
-               /* Ignore short reads; it'll correct itself. */
-               while ((b = fgetln(stdin, &len)) != NULL)
-                       if (b && b[len - 1] == '\n') {
-                               b[len - 1] = '\0';
-                               strlcpy(bar_ext, b, sizeof bar_ext);
+               while (fgets(b, sizeof(b), stdin) != NULL) {
+                       len = strlen(b);
+                       if (b[len - 1] == '\n') {
+                               /* Remove newline. */
+                               b[--len] = '\0';
+
+                               /* "Clear" bar_ext. */
+                               bar_ext[0] = '\0';
+
+                               /* Flush buffered output. */
+                               strlcpy(bar_ext, bar_ext_buf, sizeof(bar_ext));
+                               bar_ext_buf[0] = '\0';
+
+                               /* Append new output to bar. */
+                               strlcat(bar_ext, b, sizeof(bar_ext));
+
+                               redraw = 1;
+                       } else {
+                               /* Buffer output. */
+                               strlcat(bar_ext_buf, b, sizeof(bar_ext_buf));
                        }
-               if (b == NULL && errno != EAGAIN) {
-                       warn("bar_update: bar_extra failed");
+               }
+
+               if (errno != EAGAIN) {
+                       warn("bar_action failed");
                        bar_extra_stop();
                }
        } else {
@@ -2216,15 +2236,22 @@ bar_update(void)
                 * Attempt to drain stdin, so it doesn't cause the main loop to
                 * call us as fast as it can.
                 */
-               fgetln(stdin, &len);
+               while (fgets(b, sizeof(b), stdin) != NULL);
 
                if (!bar_enabled)
                        return;
 
-               bar_ext[0] = '\0';
+               /* Clear bar script output if bar script is not running. */
+               if (bar_ext[0] != '\0') {
+                       bar_ext[0] = '\0';
+                       redraw = 1;
+               }
        }
 
-       bar_fmt_print();
+       if (redraw) {
+               bar_draw();
+               xcb_flush(conn);
+       }
 }
 
 void
@@ -2266,13 +2293,13 @@ bar_toggle(struct swm_region *r, union arg *args)
        stack();
 
        /* must be after stack */
-       bar_update();
+       bar_draw();
 
        focus_flush();
 }
 
 void
-bar_refresh(void)
+bar_extra_setup(void)
 {
        struct swm_region       *r;
        uint32_t                wa[2];
@@ -2323,7 +2350,7 @@ bar_refresh(void)
                            XCB_CW_BACK_PIXEL | XCB_CW_BORDER_PIXEL, wa);
                }
 
-       bar_update();
+       bar_draw();
        xcb_flush(conn);
 }
 
@@ -2490,7 +2517,7 @@ bar_setup(struct swm_region *r)
            "%d x %d\n", WINID(r->bar), X(r->bar), Y(r->bar), WIDTH(r->bar),
            HEIGHT(r->bar));
 
-       bar_refresh();
+       bar_extra_setup();
 }
 
 void
@@ -2553,8 +2580,8 @@ version(struct swm_region *r, union arg *args)
                    "Version: %s Build: %s", SPECTRWM_VERSION, buildstr);
        else
                strlcpy(bar_vertext, "", sizeof bar_vertext);
-       bar_update();
 
+       bar_draw();
        xcb_flush(conn);
 }
 
@@ -3124,6 +3151,9 @@ focus_win(struct ws_win *win)
        if (win->ws == NULL)
                goto out;
 
+       if (!win->mapped)
+               goto out;
+
        ws = win->ws;
 
        if (validate_ws(ws))
@@ -3209,7 +3239,7 @@ focus_win(struct ws_win *win)
        }
 
 out:
-       bar_update();
+       bar_draw();
 
        DNPRINTF(SWM_D_FOCUS, "focus_win: done.\n");
 }
@@ -3331,7 +3361,7 @@ switchws(struct swm_region *r, union arg *args)
 
        /* Clear bar if new ws is empty. */
        if (new_ws->focus_pending == NULL)
-               bar_update();
+               bar_draw();
 
        focus_flush();
 
@@ -3440,7 +3470,7 @@ cyclescr(struct swm_region *r, union arg *args)
                                rr->s[i].root, XCB_CURRENT_TIME);
 
                /* Clear bar since empty. */
-               bar_update();
+               bar_draw();
        }
 
        focus_flush();
@@ -3592,37 +3622,70 @@ get_focus_prev(struct ws_win *win)
        if (winfocus == NULL || winfocus == win) {
                switch (focus_close) {
                case SWM_STACK_BOTTOM:
-                       winfocus = TAILQ_FIRST(wl);
+                       TAILQ_FOREACH(winfocus, wl, entry)
+                               if (!winfocus->iconic && winfocus != cur_focus)
+                                       break;
                        break;
                case SWM_STACK_TOP:
-                       winfocus = TAILQ_LAST(wl, ws_win_list);
+                       TAILQ_FOREACH_REVERSE(winfocus, wl, ws_win_list, entry)
+                               if (!winfocus->iconic && winfocus != cur_focus)
+                                       break;
                        break;
                case SWM_STACK_ABOVE:
-                       if ((winfocus = TAILQ_NEXT(cur_focus, entry)) == NULL) {
-                               if (focus_close_wrap)
-                                       winfocus = TAILQ_FIRST(wl);
-                               else
-                                       winfocus = TAILQ_PREV(cur_focus,
-                                           ws_win_list, entry);
+                       winfocus = TAILQ_NEXT(cur_focus, entry);
+                       while (winfocus && winfocus->iconic)
+                               winfocus = TAILQ_NEXT(winfocus, entry);
+
+                       if (winfocus == NULL) {
+                               if (focus_close_wrap) {
+                                       TAILQ_FOREACH(winfocus, wl, entry)
+                                               if (!winfocus->iconic &&
+                                                   winfocus != cur_focus)
+                                                       break;
+                               } else {
+                                       TAILQ_FOREACH_REVERSE(winfocus, wl,
+                                           ws_win_list, entry)
+                                               if (!winfocus->iconic &&
+                                                   winfocus != cur_focus)
+                                                       break;
+                               }
                        }
                        break;
                case SWM_STACK_BELOW:
-                       if ((winfocus = TAILQ_PREV(cur_focus, ws_win_list,
-                           entry)) == NULL) {
-                               if (focus_close_wrap)
-                                       winfocus = TAILQ_LAST(wl, ws_win_list);
-                               else
-                                       winfocus = TAILQ_NEXT(cur_focus, entry);
+                       winfocus = TAILQ_PREV(cur_focus, ws_win_list, entry);
+                       while (winfocus && winfocus->iconic)
+                               winfocus = TAILQ_PREV(winfocus, ws_win_list,
+                                   entry);
+
+                       if (winfocus == NULL) {
+                               if (focus_close_wrap) {
+                                       TAILQ_FOREACH_REVERSE(winfocus, wl,
+                                           ws_win_list, entry)
+                                               if (!winfocus->iconic &&
+                                                   winfocus != cur_focus)
+                                                       break;
+                               } else {
+                                       TAILQ_FOREACH(winfocus, wl, entry)
+                                               if (!winfocus->iconic &&
+                                                   winfocus != cur_focus)
+                                                       break;
+                               }
                        }
                        break;
                }
        }
 done:
-       if (winfocus == NULL) {
-               if (focus_default == SWM_STACK_TOP)
-                       winfocus = TAILQ_LAST(wl, ws_win_list);
-               else
-                       winfocus = TAILQ_FIRST(wl);
+       if (winfocus == NULL ||
+           (winfocus && (winfocus->iconic || winfocus == cur_focus))) {
+               if (focus_default == SWM_STACK_TOP) {
+                       TAILQ_FOREACH_REVERSE(winfocus, wl, ws_win_list, entry)
+                               if (!winfocus->iconic && winfocus != cur_focus)
+                                       break;
+               } else {
+                       TAILQ_FOREACH(winfocus, wl, entry)
+                               if (!winfocus->iconic && winfocus != cur_focus)
+                                       break;
+               }
        }
 
        kill_refs(win);
@@ -3753,7 +3816,7 @@ cycle_layout(struct swm_region *r, union arg *args)
                ws->cur_layout = &layouts[0];
 
        stack();
-       bar_update();
+       bar_draw();
 
        focus_win(get_region_focus(r));
 
@@ -3773,7 +3836,7 @@ stack_config(struct swm_region *r, union arg *args)
 
        if (args->id != SWM_ARG_ID_STACKINIT)
                stack();
-       bar_update();
+       bar_draw();
 
        focus_flush();
 }
@@ -4325,8 +4388,8 @@ max_stack(struct workspace *ws, struct swm_geometry *g)
                }
 
                /* Unmap unwanted windows if not multi-screen. */
-               if (!(num_screens > 1 || outputs > 1) && (w != win ||
-                   w != parent || w->transient != win->id))
+               if (num_screens <= 1 && outputs <= 1 && w != win &&
+                   w != parent && w->transient != win->id)
                        unmap_window(w);
        }
 
@@ -6232,7 +6295,7 @@ grabkeys(void)
                                            screens[k].root,
                                            kp->mod | modifiers[j],
                                            *code, XCB_GRAB_MODE_SYNC,
-                                           XCB_GRAB_MODE_ASYNC);
+                                           XCB_GRAB_MODE_SYNC);
                                free(code);
                        }
                }
@@ -6622,9 +6685,10 @@ setconfvalue(char *selector, char *value, int flags)
                setconfspawn("spawn_term", value, 0);
                break;
        case SWM_S_SS_APP:
+               /* No longer needed; leave to not break old conf files. */
                break;
        case SWM_S_SS_ENABLED:
-               ss_enabled = atoi(value);
+               /* No longer needed; leave to not break old conf files. */
                break;
        case SWM_S_STACK_ENABLED:
                stack_enabled = atoi(value);
@@ -6870,51 +6934,51 @@ struct config_option {
        int                     funcflags;
 };
 struct config_option configopt[] = {
-       { "bar_enabled",                setconfvalue,   SWM_S_BAR_ENABLED },
-       { "bar_enabled_ws",             setconfvalue,   SWM_S_BAR_ENABLED_WS },
+       { "autorun",                    setautorun,     0 },
+       { "bar_action",                 setconfvalue,   SWM_S_BAR_ACTION },
        { "bar_at_bottom",              setconfvalue,   SWM_S_BAR_AT_BOTTOM },
        { "bar_border",                 setconfcolor,   SWM_S_COLOR_BAR_BORDER },
        { "bar_border_width",           setconfvalue,   SWM_S_BAR_BORDER_WIDTH },
        { "bar_color",                  setconfcolor,   SWM_S_COLOR_BAR },
-       { "bar_font_color",             setconfcolor,   SWM_S_COLOR_BAR_FONT },
-       { "bar_font",                   setconfvalue,   SWM_S_BAR_FONT },
-       { "bar_action",                 setconfvalue,   SWM_S_BAR_ACTION },
        { "bar_delay",                  setconfvalue,   SWM_S_BAR_DELAY },
-       { "bar_justify",                setconfvalue,   SWM_S_BAR_JUSTIFY },
+       { "bar_enabled",                setconfvalue,   SWM_S_BAR_ENABLED },
+       { "bar_enabled_ws",             setconfvalue,   SWM_S_BAR_ENABLED_WS },
+       { "bar_font",                   setconfvalue,   SWM_S_BAR_FONT },
+       { "bar_font_color",             setconfcolor,   SWM_S_COLOR_BAR_FONT },
        { "bar_format",                 setconfvalue,   SWM_S_BAR_FORMAT },
-       { "keyboard_mapping",           setkeymapping,  0 },
+       { "bar_justify",                setconfvalue,   SWM_S_BAR_JUSTIFY },
        { "bind",                       setconfbinding, 0 },
-       { "stack_enabled",              setconfvalue,   SWM_S_STACK_ENABLED },
+       { "border_width",               setconfvalue,   SWM_S_BORDER_WIDTH },
        { "clock_enabled",              setconfvalue,   SWM_S_CLOCK_ENABLED },
        { "clock_format",               setconfvalue,   SWM_S_CLOCK_FORMAT },
        { "color_focus",                setconfcolor,   SWM_S_COLOR_FOCUS },
        { "color_unfocus",              setconfcolor,   SWM_S_COLOR_UNFOCUS },
        { "cycle_empty",                setconfvalue,   SWM_S_CYCLE_EMPTY },
        { "cycle_visible",              setconfvalue,   SWM_S_CYCLE_VISIBLE },
-       { "workspace_limit",            setconfvalue,   SWM_S_WORKSPACE_LIMIT },
        { "dialog_ratio",               setconfvalue,   SWM_S_DIALOG_RATIO },
-       { "verbose_layout",             setconfvalue,   SWM_S_VERBOSE_LAYOUT },
+       { "disable_border",             setconfvalue,   SWM_S_DISABLE_BORDER },
+       { "focus_close",                setconfvalue,   SWM_S_FOCUS_CLOSE },
+       { "focus_close_wrap",           setconfvalue,   SWM_S_FOCUS_CLOSE_WRAP },
+       { "focus_default",              setconfvalue,   SWM_S_FOCUS_DEFAULT },
+       { "focus_mode",                 setconfvalue,   SWM_S_FOCUS_MODE },
+       { "keyboard_mapping",           setkeymapping,  0 },
+       { "layout",                     setlayout,      0 },
        { "modkey",                     setconfmodkey,  0 },
        { "program",                    setconfspawn,   0 },
        { "quirk",                      setconfquirk,   0 },
        { "region",                     setconfregion,  0 },
-       { "spawn_term",                 setconfvalue,   SWM_S_SPAWN_TERM },
-       { "screenshot_enabled",         setconfvalue,   SWM_S_SS_ENABLED },
        { "screenshot_app",             setconfvalue,   SWM_S_SS_APP },
-       { "window_name_enabled",        setconfvalue,   SWM_S_WINDOW_NAME_ENABLED },
-       { "urgent_enabled",             setconfvalue,   SWM_S_URGENT_ENABLED },
+       { "screenshot_enabled",         setconfvalue,   SWM_S_SS_ENABLED },
+       { "spawn_position",             setconfvalue,   SWM_S_SPAWN_ORDER },
+       { "spawn_term",                 setconfvalue,   SWM_S_SPAWN_TERM },
+       { "stack_enabled",              setconfvalue,   SWM_S_STACK_ENABLED },
        { "term_width",                 setconfvalue,   SWM_S_TERM_WIDTH },
        { "title_class_enabled",        setconfvalue,   SWM_S_TITLE_CLASS_ENABLED },
        { "title_name_enabled",         setconfvalue,   SWM_S_TITLE_NAME_ENABLED },
-       { "focus_mode",                 setconfvalue,   SWM_S_FOCUS_MODE },
-       { "focus_close",                setconfvalue,   SWM_S_FOCUS_CLOSE },
-       { "focus_close_wrap",           setconfvalue,   SWM_S_FOCUS_CLOSE_WRAP },
-       { "focus_default",              setconfvalue,   SWM_S_FOCUS_DEFAULT },
-       { "spawn_position",             setconfvalue,   SWM_S_SPAWN_ORDER },
-       { "disable_border",             setconfvalue,   SWM_S_DISABLE_BORDER },
-       { "border_width",               setconfvalue,   SWM_S_BORDER_WIDTH },
-       { "autorun",                    setautorun,     0 },
-       { "layout",                     setlayout,      0 },
+       { "urgent_enabled",             setconfvalue,   SWM_S_URGENT_ENABLED },
+       { "verbose_layout",             setconfvalue,   SWM_S_VERBOSE_LAYOUT },
+       { "window_name_enabled",        setconfvalue,   SWM_S_WINDOW_NAME_ENABLED },
+       { "workspace_limit",            setconfvalue,   SWM_S_WORKSPACE_LIMIT },
 };
 
 int
@@ -7427,7 +7491,7 @@ expose(xcb_expose_event_t *e)
        for (i = 0; i < num_screens; i++)
                TAILQ_FOREACH(r, &screens[i].rl, entry)
                        if (e->window == WINID(r->bar))
-                               bar_update();
+                               bar_draw();
 
        xcb_flush(conn);
 }
@@ -7458,10 +7522,14 @@ keypress(xcb_key_press_event_t *e)
 
        keysym = xcb_key_press_lookup_keysym(syms, e, 0);
 
-       DNPRINTF(SWM_D_EVENT, "keypress: %u %u\n", e->detail, keysym);
+       DNPRINTF(SWM_D_EVENT, "keypress: keysym: %u, win (x,y): 0x%x (%d,%d), "
+           "detail: %u, time: %u, root (x,y): 0x%x (%d,%d), child: 0x%x, "
+           "state: %u, same_screen: %s\n", keysym, e->event, e->event_x,
+           e->event_y, e->detail, e->time, e->root, e->root_x, e->root_y,
+           e->child, e->state, YESNO(e->same_screen));
 
        if ((kp = key_lookup(CLEANMASK(e->state), keysym)) == NULL)
-               return;
+               goto out;
 
        last_event_time = e->time;
 
@@ -7471,6 +7539,13 @@ keypress(xcb_key_press_event_t *e)
        else if (keyfuncs[kp->funcid].func)
                keyfuncs[kp->funcid].func(root_to_region(e->root, SWM_CK_ALL),
                    &(keyfuncs[kp->funcid].args));
+
+out:
+       /* Unfreeze grab events. */
+       xcb_allow_events(conn, XCB_ALLOW_ASYNC_KEYBOARD, e->time);
+       xcb_flush(conn);
+
+       DNPRINTF(SWM_D_EVENT, "keypress: done.\n");
 }
 
 void
@@ -7512,7 +7587,7 @@ buttonpress(xcb_button_press_event_t *e)
                                    XCB_INPUT_FOCUS_PARENT, e->root, e->time);
 
                                /* Clear bar since empty. */
-                               bar_update();
+                               bar_draw();
 
                                handled = 1;
                                goto out;
@@ -7893,7 +7968,7 @@ enternotify(xcb_enter_notify_event_t *e)
                                    XCB_INPUT_FOCUS_PARENT, e->root, e->time);
 
                                /* Clear bar since empty. */
-                               bar_update();
+                               bar_draw();
 
                                focus_flush();
                        }
@@ -8091,7 +8166,7 @@ propertynotify(xcb_property_notify_event_t *e)
                }
        } else if (e->atom == XCB_ATOM_WM_CLASS ||
            e->atom == XCB_ATOM_WM_NAME) {
-               bar_update();
+               bar_draw();
        }
 
        xcb_flush(conn);
@@ -8839,7 +8914,7 @@ main(int argc, char *argv[])
        struct timeval          tv;
        fd_set                  rd;
        int                     rd_max;
-       int                     do_bar_update = 0;
+       int                     stdin_ready = 0;
        int                     num_readable;
 
        /* suppress unused warning since var is needed */
@@ -9002,10 +9077,11 @@ noconfig:
                tv.tv_sec = 1;
                tv.tv_usec = 0;
                num_readable = select(rd_max + 1, &rd, NULL, NULL, &tv);
-               if (num_readable == -1 && errno != EINTR)
+               if (num_readable == -1 && errno != EINTR) {
                        DNPRINTF(SWM_D_MISC, "select failed");
-               else if (num_readable > 0 && FD_ISSET(STDIN_FILENO, &rd))
-                       do_bar_update = 1;
+               } else if (num_readable > 0 && FD_ISSET(STDIN_FILENO, &rd)) {
+                       stdin_ready = 1;
+               }
 
                if (restart_wm)
                        restart(NULL, NULL);
@@ -9016,9 +9092,9 @@ noconfig:
                if (!running)
                        goto done;
 
-               if (do_bar_update) {
-                       do_bar_update = 0;
-                       bar_update();
+               if (stdin_ready) {
+                       stdin_ready = 0;
+                       bar_extra_update();
                }
        }
 done: