nichts/hosts/vali/mars/dwm/dwm-6.5/dwm-multiple-dynamic-scratchpads.diff

diff --git a/config.def.h b/config.def.h
index a2ac963..1c82453 100644
--- a/config.def.h
+++ b/config.def.h
@@ -95,6 +95,13 @@ static Key keys[] = {
 	TAGKEYS(                        XK_8,                      7)
 	TAGKEYS(                        XK_9,                      8)
 	{ MODKEY|ShiftMask,             XK_q,      quit,           {0} },
+    { MODKEY,                       XK_s, scratchpad_show, {.i = 1} },
+    { MODKEY,                       XK_y, scratchpad_show, {.i = 2} },
+    { MODKEY,                       XK_u, scratchpad_show, {.i = 3} },
+    { MODKEY|ShiftMask,                       XK_s, scratchpad_hide, {.i = 1} },
+    { MODKEY|ShiftMask,                       XK_y, scratchpad_hide, {.i = 2} },
+    { MODKEY|ShiftMask,                       XK_u, scratchpad_hide, {.i = 3} },
+	{ MODKEY|ShiftMask,             XK_r,      scratchpad_remove,           {0} },
 };
 
 /* button definitions */
diff --git a/dwm.c b/dwm.c
index 5f16260..202038f 100644
--- a/dwm.c
+++ b/dwm.c
@@ -195,6 +195,11 @@ static void resizemouse(const Arg *arg);
 static void restack(Monitor *m);
 static void run(void);
 static void scan(void);
+static void scratchpad_hide();
+static void scratchpad_remove();
+static void scratchpad_show();
+static void scratchpad_show_client(Client *c);
+static void scratchpad_show_first(int scratchNum);
 static int sendevent(Client *c, Atom proto);
 static void sendmon(Client *c, Monitor *m);
 static void setclientstate(Client *c, long state);
@@ -269,11 +274,19 @@ static Drw *drw;
 static Monitor *mons, *selmon;
 static Window root, wmcheckwin;
 
+/* scratchpad */
+#define SCRATCHPAD_MASK_1 (1u << sizeof tags / sizeof * tags)
+#define SCRATCHPAD_MASK_2 (1u << (sizeof tags / sizeof * tags + 1))
+#define SCRATCHPAD_MASK_3 (1u << (sizeof tags / sizeof * tags + 2))
+static int scratchpad_hide_flag = 0;
+static Client *scratchpad_last_showed_1 = NULL;
+static Client *scratchpad_last_showed_2 = NULL;
+static Client *scratchpad_last_showed_3 = NULL;
 /* configuration, allows nested code to access above variables */
 #include "config.h"
 
 /* compile-time check if all tags fit into an unsigned int bit array. */
-struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
+struct NumTags { char limitexceeded[LENGTH(tags) > 28 ? -1 : 1]; };
 
 /* function implementations */
 void
@@ -309,7 +322,9 @@ applyrules(Client *c)
 		XFree(ch.res_class);
 	if (ch.res_name)
 		XFree(ch.res_name);
+    if(c->tags != SCRATCHPAD_MASK_1 && c->tags != SCRATCHPAD_MASK_2 && c->tags != SCRATCHPAD_MASK_3) {
 	c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
+    }
 }
 
 int
@@ -1412,6 +1427,124 @@ scan(void)
 	}
 }
 
+static void scratchpad_hide(const Arg *arg) {
+    if(scratchpad_hide_flag < 4) {
+        if(arg->i == 1) {
+            if(selmon->sel) {
+                selmon->sel->tags = SCRATCHPAD_MASK_1;
+                selmon->sel->isfloating = 1;
+                focus(NULL);
+                arrange(selmon);
+                scratchpad_hide_flag++;
+            }
+        }
+        else if(arg->i == 2) {
+            if(selmon->sel) {
+                selmon->sel->tags = SCRATCHPAD_MASK_2;
+                selmon->sel->isfloating = 1;
+                focus(NULL);
+                arrange(selmon);
+                scratchpad_hide_flag++;
+            }
+        }
+        else if(arg->i == 3) {
+            if(selmon->sel) {
+                selmon->sel->tags = SCRATCHPAD_MASK_3;
+                selmon->sel->isfloating = 1;
+                focus(NULL);
+                arrange(selmon);
+                scratchpad_hide_flag++;
+            }
+        }
+    }
+}
+
+static void scratchpad_remove() {
+    if(selmon->sel && (scratchpad_last_showed_1 != NULL || scratchpad_last_showed_2 != NULL ||scratchpad_last_showed_3 != NULL) && (selmon->sel == scratchpad_last_showed_1 || selmon->sel == scratchpad_last_showed_2 || selmon->sel == scratchpad_last_showed_3))  {
+        if(scratchpad_last_showed_1 == selmon->sel) {
+            scratchpad_last_showed_1 = NULL;
+            scratchpad_hide_flag--;
+        }
+        else if(scratchpad_last_showed_2 == selmon->sel) {
+            scratchpad_last_showed_2 = NULL;
+            scratchpad_hide_flag--;
+        }
+        else if(scratchpad_last_showed_3 == selmon->sel) {
+            scratchpad_last_showed_3 = NULL;
+            scratchpad_hide_flag--;
+        }
+    }
+}
+
+static void scratchpad_show(const Arg *arg) {
+    if(arg->i == 1) {
+        if(scratchpad_last_showed_1 == NULL) {
+            scratchpad_show_first(arg->i);
+        }
+        else {
+            if(scratchpad_last_showed_1->tags != SCRATCHPAD_MASK_1) {
+                scratchpad_last_showed_1->tags = SCRATCHPAD_MASK_1;
+                focus(NULL);
+                arrange(selmon);
+            }
+            else {
+                scratchpad_show_first(arg->i);
+            }
+        }
+    }
+    else if(arg->i == 2) {
+        if(scratchpad_last_showed_2 == NULL) {
+            scratchpad_show_first(arg->i);
+        }
+        else {
+            if(scratchpad_last_showed_2->tags != SCRATCHPAD_MASK_2) {
+                scratchpad_last_showed_2->tags = SCRATCHPAD_MASK_2;
+                focus(NULL);
+                arrange(selmon);
+            }
+            else {
+                scratchpad_show_first(arg->i);
+            }
+        }
+    }
+    else if(arg->i == 3) {
+        if(scratchpad_last_showed_3 == NULL) {
+            scratchpad_show_first(arg->i);
+        }
+        else {
+            if(scratchpad_last_showed_3->tags != SCRATCHPAD_MASK_3) {
+                scratchpad_last_showed_3->tags = SCRATCHPAD_MASK_3;
+                focus(NULL);
+                arrange(selmon);
+            }
+            else {
+                scratchpad_show_first(arg->i);
+            }
+        }
+    }
+}
+
+static void scratchpad_show_client(Client *c) {
+    c->tags = selmon->tagset[selmon->seltags];
+    focus(c);
+    arrange(selmon);
+}
+
+static void scratchpad_show_first(int scratchNum) {
+    for(Client *c = selmon->clients; c !=NULL; c = c->next) {
+        if(c->tags == SCRATCHPAD_MASK_1 && scratchNum == 1) {
+            scratchpad_last_showed_1 = c;
+            scratchpad_show_client(c);
+        } else if(c->tags == SCRATCHPAD_MASK_2 && scratchNum == 2) {
+            scratchpad_last_showed_2 = c;
+            scratchpad_show_client(c);
+        } else if(c->tags == SCRATCHPAD_MASK_3 && scratchNum == 3) {
+            scratchpad_last_showed_3 = c;
+            scratchpad_show_client(c);
+        }
+    }
+}
+
 void
 sendmon(Client *c, Monitor *m)
 {
@@ -1785,6 +1918,16 @@ unmanage(Client *c, int destroyed)
 		XSetErrorHandler(xerror);
 		XUngrabServer(dpy);
 	}
+    if(scratchpad_last_showed_1 == c) {
+        scratchpad_last_showed_1 = NULL;
+    }
+    if(scratchpad_last_showed_2 == c) {
+        scratchpad_last_showed_2 = NULL;
+    }
+    if(scratchpad_last_showed_3 == c) {
+        scratchpad_last_showed_3 = NULL;
+    }
+
 	free(c);
 	focus(NULL);
 	updateclientlist();