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From 7b578d9f4647d84f79a2e8a46a1c65cbacf8d90b Mon Sep 17 00:00:00 2001
From: Nikita Ivanov <nikita.vyach.ivanov@gmail.com>
Date: Wed, 19 Mar 2025 02:28:46 +0100
Subject: [PATCH] Add menurule to tweak rules at runtime
---
config.def.h | 2 +
dwl.c | 116 +++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 118 insertions(+)
diff --git a/config.def.h b/config.def.h
index e03a754..77b10ff 100644
--- a/config.def.h
+++ b/config.def.h
@@ -24,6 +24,7 @@ static const Menu menus[] = {
/* command feed function action function */
{ "wmenu -i -l 10 -p Windows", menuwinfeed, menuwinaction },
{ "wmenu -i -p Layouts", menulayoutfeed, menulayoutaction },
+ { "wmenu -i -l 10 -p Rules", menurulefeed, menuruleaction },
};
/* Max amount of dynamically added rules */
@@ -151,6 +152,7 @@ static const Key keys[] = {
{ MODKEY, XKB_KEY_space, setlayout, {0} },
{ MODKEY, XKB_KEY_o, menu, {.v = &menus[0]} },
{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_O, menu, {.v = &menus[1]} },
+ { MODKEY, XKB_KEY_r, menu, {.v = &menus[2]} },
{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_space, togglefloating, {0} },
{ MODKEY, XKB_KEY_e, togglefullscreen, {0} },
{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_R, setruleisfloating,{0} },
diff --git a/dwl.c b/dwl.c
index be007d8..df4901f 100644
--- a/dwl.c
+++ b/dwl.c
@@ -316,6 +316,8 @@ static void menuwinfeed(FILE *f);
static void menuwinaction(char *line);
static void menulayoutfeed(FILE *f);
static void menulayoutaction(char *line);
+static void menurulefeed(FILE *f);
+static void menuruleaction(char *line);
static void monocle(Monitor *m);
static void motionabsolute(struct wl_listener *listener, void *data);
static void motionnotify(uint32_t time, struct wlr_input_device *device, double sx,
@@ -1974,6 +1976,120 @@ found:
setlayout(&(const Arg){ .v = l });
}
+void
+menurulefeed(FILE *f)
+{
+ Rule t, *p, *r;
+ const char *appid, *title;
+ static char buf[515];
+ Client *c = focustop(selmon);
+ int n, wid = 0, match;
+
+ t = (Rule){ 0 };
+ t.monitor = -1;
+ if (c) {
+ t.id = client_get_appid(c);
+ t.title = client_get_title(c);
+ appid = t.id ? t.id : broken;
+ title = t.title ? t.title : broken;
+ }
+
+ for (p = drules; p <= drules + druleslen; p++) {
+ r = (p == drules + druleslen) ? &t : p;
+ n = 0;
+ n += strlen(r->id ? r->id : "NULL");
+ n += strlen(r->title ? r->title : "NULL");
+ n += 3;
+ wid = MAX(wid, n);
+ }
+ wid = MIN(wid, 40);
+
+ for (p = drules; p <= drules + druleslen; p++) {
+ match = 0;
+ /* Check if rule applies to the focused client */
+ if (c && p < drules + druleslen) {
+ match = (!p->title || strstr(title, p->title))
+ && (!p->id || strstr(appid, p->id));
+ if (match && p->id)
+ t.id = NULL;
+ if (match && p->title)
+ t.title = NULL;
+ }
+ r = (p == drules + druleslen) ? &t : p;
+ if (r == &t && t.id)
+ t.title = NULL;
+ /* Do not suggest to add a new empty rule */
+ if (r == &t && !(t.id || t.title))
+ continue;
+ if (r->id && r->title &&
+ strcmp(r->id, "removedrule") == 0 && strcmp(r->title, "removedrule") == 0)
+ continue;
+ snprintf(buf, LENGTH(buf) - 1, "[%s|%s]",
+ r->id ? r->id : "NULL", r->title ? r->title : "NULL");
+ fprintf(f, "%-*s "
+ " tags:%-4"PRIi32
+ " isfloating:%-2d"
+ " monitor:%-2d"
+ "%s\n", wid, buf,
+ r->tags,
+ r->isfloating,
+ r->monitor,
+ (r == &t) ? " (NEW)" : match ? " <" : "");
+ }
+}
+
+void
+menuruleaction(char *line)
+{
+ Rule r, *f;
+ static char appid[256], title[256];
+ int del = 0, end;
+
+ if (line[0] == '-') {
+ del = 1;
+ line++;
+ }
+ end = 0;
+ sscanf(line, "[%255[^|]|%255[^]]]"
+ " tags:%"SCNu32
+ " isfloating:%d"
+ " monitor:%d"
+ "%n", appid, title,
+ &r.tags,
+ &r.isfloating,
+ &r.monitor,
+ &end);
+
+ /* Full line was not parsed, exit */
+ if (!end)
+ return;
+
+ r.id = (strcmp(appid, "NULL") != 0) ? appid : NULL;
+ r.title = (strcmp(title, "NULL") != 0) ? title : NULL;
+
+ /* Find which rule we are trying to edit */
+ for (f = drules; f < drules + druleslen; f++)
+ if (((!r.title && !f->title) || (r.title && f->title && !strcmp(r.title, f->title)))
+ && (((!r.id && !f->id) || (r.id && f->id && !strcmp(r.id, f->id)))))
+ goto found;
+
+ if (druleslen >= LENGTH(rules) + RULES_MAX)
+ return; /* No free slots left */
+
+ f = drules + druleslen++;
+ f->id = r.id ? strdup(r.id) : NULL;
+ f->title = r.title ? strdup(r.title) : NULL;
+
+found:
+ if (del) {
+ f->id = f->title = "removedrule";
+ return;
+ }
+ r.id = f->id;
+ r.title = f->title;
+ *f = r;
+}
+
void
monocle(Monitor *m)
{
--
2.49.0
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