add scratch window support

awesomerc.1.txt

@@ -87,6 +87,10 @@ Client
     Move client window with mouse.
 *client_resizemouse*::
     Resize client window with mouse.
+*client_setscratch*::
+    Set or unset client as being the scratch window.
+*client_togglescratch*::
+    Toggle scratch window.
 
 Tag
 ~~~

awesomerc.in

@@ -316,6 +316,18 @@ keys
         command = "client_togglefloating"
     }
     key
+    {
+        modkey = {"Mod4"}
+        key = "s"
+        command = "client_togglescratch"
+    }
+    key
+    {
+        modkey = {"Mod4", "Control"}
+        key = "s"
+        command = "client_setscratch"
+    }
+    key
     {
         modkey = {"Mod4", "Shift"}
         key = "c"

client.c

@@ -704,6 +704,9 @@ client_isvisible(Client *c, int screen)
     if(!c || c->screen != screen)
         return False;
 
+    if(globalconf.scratch.client == c)
+        return globalconf.scratch.isvisible;
+
     for(tag = globalconf.screens[screen].tags; tag; tag = tag->next)
         if(tag->selected && is_client_tagged(c, tag))
             return True;
@@ -1079,4 +1082,41 @@ uicb_client_togglefloating(int screen __attribute__ ((unused)),
         client_setfloating(globalconf.focus->client, !globalconf.focus->client->isfloating);
 }
 
+/** Toggle scratch client attribute
+ * \param screen screen number
+ * \param arg unused argument
+ * \ingroup ui_callback
+ */
+void
+uicb_client_setscratch(int screen,
+                       char *arg __attribute__ ((unused)))
+{
+    if(!globalconf.focus->client)
+        return;
+
+    if(globalconf.scratch.client == globalconf.focus->client)
+        globalconf.scratch.client = NULL;
+    else
+        globalconf.scratch.client = globalconf.focus->client;
+
+    widget_invalidate_cache(screen, WIDGET_CACHE_CLIENTS | WIDGET_CACHE_TAGS);
+    globalconf.screens[screen].need_arrange = True;
+}
+
+/** Toggle scratch client visibility
+ * \param screen screen number
+ * \param arg unused argument
+ * \ingroup ui_callback
+ */
+void
+uicb_client_togglescratch(int screen __attribute__ ((unused)),
+                          char *arg __attribute__ ((unused)))
+{
+    if(globalconf.scratch.client)
+    {
+        globalconf.scratch.isvisible = !globalconf.scratch.isvisible;
+        globalconf.screens[globalconf.scratch.client->screen].need_arrange = True;
+        widget_invalidate_cache(globalconf.scratch.client->screen, WIDGET_CACHE_CLIENTS);
+    }
+}
 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80

client.h

@@ -52,6 +52,8 @@ Uicb uicb_client_zoom;
 Uicb uicb_client_focusnext;
 Uicb uicb_client_focusprev;
 Uicb uicb_client_togglefloating;
+Uicb uicb_client_togglescratch;
+Uicb uicb_client_setscratch;
 
 DO_SLIST(Client, client, p_delete);
 

config.c

@@ -19,10 +19,6 @@
  *
  */
 
-/**
- * @defgroup ui_callback User Interface Callbacks
- */
-
 #include <X11/keysym.h>
 
 #include "config.h"

structs.h

@@ -314,6 +314,12 @@ struct AwesomeConf
     Cursor cursor[CurLast];
     /** Clients list */
     Client *clients;
+    /** Scratch client */
+    struct
+    {
+        Client *client;
+        Bool isvisible;
+    } scratch;
     /** Path to config file */
     char *configpath;
     /** Selected clients history */

uicb.c

@@ -19,6 +19,10 @@
  *
  */
 
+/**
+ * @defgroup ui_callback User Interface Callbacks
+ */
+
 #include "awesome.h"
 #include "xutil.h"
 #include "tag.h"

widgets/taglist.c

@@ -40,8 +40,9 @@ isoccupied(Tag *t)
     Client *c;
 
     for(c = globalconf.clients; c; c = c->next)
-        if(is_client_tagged(c, t) && !c->skip)
+        if(is_client_tagged(c, t) && !c->skip && c != globalconf.scratch.client)
             return True;
+
     return False;
 }
 

widgets/tasklist.c

@@ -142,7 +142,15 @@ tasklist_draw(Widget *widget, DrawCtx *ctx, int offset, int used)
                           widget->font->height / 2, widget->font, c->name,
                           d->fg, d->bg);
 
-            if(c->isfloating || c->ismax)
+            if(c == globalconf.scratch.client)
+            {
+                area.x = widget->area.x + icon_width + box_width * i;
+                area.y = widget->area.y;
+                area.width = (widget->font->height + 2) / 3;
+                area.height = (widget->font->height + 2) / 3;
+                draw_rectangle(ctx, area, c->isfloating, d->fg);
+            }
+            else if(c->isfloating || c->ismax)
                 draw_circle(ctx, widget->area.x + icon_width + box_width * i,
                             widget->area.y,
                             (widget->font->height + 2) / 4,