- allow per-screen gap; not (yet) user configurable.

- teach _NET_WORKAREA about gap.

ok oga@

calmwm.c

@@ -159,6 +159,7 @@ x_setupscreen(struct screen_ctx *sc, u_int which)
 	sc->which = which;
 	sc->rootwin = RootWindow(X_Dpy, sc->which);
 
+	conf_gap(&Conf, sc);
 	screen_update_geometry(sc, DisplayWidth(X_Dpy, sc->which),
 	    DisplayHeight(X_Dpy, sc->which));
 

calmwm.h

@@ -65,6 +65,12 @@ struct color {
 	unsigned long	 pixel;
 	char		*name;
 };
+struct gap {
+	int		 top;
+	int		 bottom;
+	int		 left;
+	int		 right;
+};
 
 struct client_ctx;
 
@@ -97,6 +103,7 @@ struct screen_ctx {
 	int			 xmax;
 	int			 ymax;
 
+	struct gap		 gap;
 	struct cycle_entry_q	 mruq;
 
 	XftDraw			*xftdraw;
@@ -284,6 +291,7 @@ struct conf {
 	int			 bwidth;
 #define	CONF_MAMOUNT		 1
 	int			 mamount;
+	struct gap		 gap;
 
 #define CONF_COLOR_ACTIVEBORDER		"#CCCCCC"
 #define CONF_COLOR_INACTIVEBORDER	"#666666"
@@ -298,7 +306,6 @@ struct conf {
 
 #define	DEFAULTFONTNAME		 "sans-serif:pixelsize=14:bold"
 	char			*DefaultFontName;
-	int			 gap_top, gap_bottom, gap_left, gap_right;
 };
 
 /* Menu stuff */
@@ -423,6 +430,7 @@ void			 conf_bindname(struct conf *, char *, char *);
 void			 conf_mousebind(struct conf *, char *, char *);
 void			 conf_grab_mouse(struct client_ctx *);
 void			 conf_reload(struct conf *);
+void			 conf_gap(struct conf *, struct screen_ctx *);
 void			 conf_font(struct conf *, struct screen_ctx *);
 void			 conf_color(struct conf *, struct screen_ctx *);
 void			 conf_init(struct conf *);

client.c

@@ -294,10 +294,10 @@ client_maximize(struct client_ctx *cc)
 			ymax = xine->height;
 		}
 calc:
-		cc->geom.x = x_org + Conf.gap_left;
-		cc->geom.y = y_org + Conf.gap_top;
-		cc->geom.height = ymax - (Conf.gap_top + Conf.gap_bottom);
-		cc->geom.width = xmax - (Conf.gap_left + Conf.gap_right);
+		cc->geom.x = x_org + sc->gap.left;
+		cc->geom.y = y_org + sc->gap.top;
+		cc->geom.height = ymax - (sc->gap.top + sc->gap.bottom);
+		cc->geom.width = xmax - (sc->gap.left + sc->gap.right);
 		cc->flags |= CLIENT_DOMAXIMIZE;
 	}
 
@@ -326,9 +326,9 @@ client_vertmaximize(struct client_ctx *cc)
 			ymax = xine->height;
 		}
 calc:
-		cc->geom.y = y_org + Conf.gap_top;
-		cc->geom.height = ymax - (cc->bwidth * 2) - (Conf.gap_top +
-		    Conf.gap_bottom);
+		cc->geom.y = y_org + sc->gap.top;
+		cc->geom.height = ymax - (cc->bwidth * 2) - (sc->gap.top +
+		    sc->gap.bottom);
 		cc->flags |= CLIENT_DOVMAXIMIZE;
 	}
 
@@ -357,9 +357,9 @@ client_horizmaximize(struct client_ctx *cc)
 			xmax = xine->width;
 		}
 calc:
-		cc->geom.x = x_org + Conf.gap_left;
-		cc->geom.width = xmax - (cc->bwidth * 2) - (Conf.gap_left +
-		    Conf.gap_right);
+		cc->geom.x = x_org + sc->gap.left;
+		cc->geom.width = xmax - (cc->bwidth * 2) - (sc->gap.left +
+		    sc->gap.right);
 		cc->flags |= CLIENT_DOHMAXIMIZE;
 	}
 
@@ -672,21 +672,21 @@ noxine:
 
 		if (xslack >= xorig) {
 			cc->geom.x = MAX(MIN(xmouse, xslack),
-			    xorig + Conf.gap_left);
-			if (cc->geom.x > (xslack - Conf.gap_right))
-				cc->geom.x -= Conf.gap_right;
+			    xorig + sc->gap.left);
+			if (cc->geom.x > (xslack - sc->gap.right))
+				cc->geom.x -= sc->gap.right;
 		} else {
-			cc->geom.x = xorig + Conf.gap_left;
-			cc->geom.width = xmax - Conf.gap_left;
+			cc->geom.x = xorig + sc->gap.left;
+			cc->geom.width = xmax - sc->gap.left;
 		}
 		if (yslack >= yorig) {
 			cc->geom.y = MAX(MIN(ymouse, yslack),
-			    yorig + Conf.gap_top);
-			if (cc->geom.y > (yslack - Conf.gap_bottom))
-				cc->geom.y -= Conf.gap_bottom;
+			    yorig + sc->gap.top);
+			if (cc->geom.y > (yslack - sc->gap.bottom))
+				cc->geom.y -= sc->gap.bottom;
 		} else {
-			cc->geom.y = yorig + Conf.gap_top;
-			cc->geom.height = ymax - Conf.gap_top;
+			cc->geom.y = yorig + sc->gap.top;
+			cc->geom.height = ymax - sc->gap.top;
 		}
 	}
 }

conf.c

@@ -60,6 +60,12 @@ conf_cmd_add(struct conf *c, char *image, char *label, int flags)
 	}
 }
 
+void
+conf_gap(struct conf *c, struct screen_ctx *sc)
+{
+	sc->gap = c->gap;
+}
+
 void
 conf_font(struct conf *c, struct screen_ctx *sc)
 {
@@ -92,6 +98,7 @@ conf_reload(struct conf *c)
 	TAILQ_FOREACH(cc, &Clientq, entry)
 		client_draw_border(cc);
 	TAILQ_FOREACH(sc, &Screenq, entry) {
+		conf_gap(c, sc);
 		conf_color(c, sc);
 		conf_font(c, sc);
 	}

parse.y

@@ -150,10 +150,10 @@ main		: FONTNAME STRING		{
 			free($3);
 		}
 		| GAP NUMBER NUMBER NUMBER NUMBER {
-			conf->gap_top = $2;
-			conf->gap_bottom = $3;
-			conf->gap_left = $4;
-			conf->gap_right = $5;
+			conf->gap.top = $2;
+			conf->gap.bottom = $3;
+			conf->gap.left = $4;
+			conf->gap.right = $5;
 		}
 		| MOUSEBIND STRING string	{
 			conf_mousebind(conf, $2, $3);
@@ -522,6 +522,7 @@ parse_config(const char *filename, struct conf *xconf)
 		xconf->flags = conf->flags;
 		xconf->bwidth = conf->bwidth;
 		xconf->mamount = conf->mamount;
+		xconf->gap = conf->gap;
 
 		while ((cmd = TAILQ_FIRST(&conf->cmdq)) != NULL) {
 			TAILQ_REMOVE(&conf->cmdq, cmd, entry);
@@ -557,8 +558,6 @@ parse_config(const char *filename, struct conf *xconf)
 			xconf->color[i].name = conf->color[i].name;
 
 		xconf->DefaultFontName = conf->DefaultFontName;
-
-		bcopy(&(conf->gap_top), &(xconf->gap_top), sizeof(int) * 4);
 	}
 
 	free(conf);

screen.c

@@ -119,12 +119,12 @@ screen_update_geometry(struct screen_ctx *sc, int width, int height)
 	XChangeProperty(X_Dpy, sc->rootwin, _NET_DESKTOP_GEOMETRY,
 	    XA_CARDINAL, 32, PropModeReplace, (unsigned char *)geom , 2);
 
-	/* x, y, width, height. XXX gap */
+	/* x, y, width, height. */
 	for (i = 0; i < CALMWM_NGROUPS; i++) {
-		workareas[i][0] = 0;
-		workareas[i][1] = 0;
-		workareas[i][2] = width;
-		workareas[i][3] = height;
+		workareas[i][0] = sc->gap.left;
+		workareas[i][1] = sc->gap.top;
+		workareas[i][2] = width - (sc->gap.left + sc->gap.right);
+		workareas[i][3] = height - (sc->gap.top + sc->gap.bottom);
 	}
 
 	XChangeProperty(X_Dpy, sc->rootwin, _NET_WORKAREA,