From 1c882c3ced97399292656739896fdbb19f1a15f5 Mon Sep 17 00:00:00 2001
From: okan
Date: Tue, 4 Oct 2016 20:15:55 +0000
Subject: When removing xrandr regions, ensure clients are within the bounds of
 the screen; adapted from an ancient diff from Sviatoslav Chagaev. Things in
 this area will likely change, but put this in so it works now and serves as a
 reminder.

---
 calmwm.h  |  3 ++-
 screen.c  | 25 ++++++++++++++++++++++++-
 xevents.c |  3 ++-
 3 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/calmwm.h b/calmwm.h
index d3b81b9..dd81e74 100644
--- a/calmwm.h
+++ b/calmwm.h
@@ -15,7 +15,7 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  *
- * $OpenBSD: calmwm.h,v 1.323 2016/10/04 15:52:32 okan Exp $
+ * $OpenBSD: calmwm.h,v 1.324 2016/10/04 20:15:55 okan Exp $
  */
 
 #ifndef _CALMWM_H_
@@ -455,6 +455,7 @@ struct geom		 screen_area(struct screen_ctx *, int, int, int);
 void			 screen_init(int);
 void			 screen_update_geometry(struct screen_ctx *);
 void			 screen_updatestackingorder(struct screen_ctx *);
+void			 screen_assert_clients_within(struct screen_ctx *);
 
 void			 kbfunc_client_cycle(struct client_ctx *, union arg *);
 void			 kbfunc_client_delete(struct client_ctx *, union arg *);
diff --git a/screen.c b/screen.c
index 660d9ff..6bf4165 100644
--- a/screen.c
+++ b/screen.c
@@ -15,7 +15,7 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  *
- * $OpenBSD: screen.c,v 1.81 2016/10/04 15:18:20 okan Exp $
+ * $OpenBSD: screen.c,v 1.82 2016/10/04 20:15:55 okan Exp $
  */
 
 #include <sys/types.h>
@@ -229,3 +229,26 @@ screen_apply_gap(struct screen_ctx *sc, struct geom geom)
 
 	return(geom);
 }
+
+/* Bring back clients which are beyond the screen. */
+void
+screen_assert_clients_within(struct screen_ctx *sc)
+{
+	struct client_ctx	*cc;
+	int			 top, left, right, bottom;
+
+	TAILQ_FOREACH(cc, &sc->clientq, entry) {
+		if (cc->sc != sc)
+			continue;
+		top = cc->geom.y;
+		left = cc->geom.x;
+		right = cc->geom.x + cc->geom.w + (cc->bwidth * 2) - 1;
+		bottom = cc->geom.y + cc->geom.h + (cc->bwidth * 2) - 1;
+		if ((top > sc->view.h || left > sc->view.w) ||
+		    (bottom < 0 || right < 0)) {
+			cc->geom.x = sc->gap.left;
+			cc->geom.y = sc->gap.top;
+			client_move(cc);
+		}
+	}
+}
diff --git a/xevents.c b/xevents.c
index a59aee6..f2ecfe8 100644
--- a/xevents.c
+++ b/xevents.c
@@ -15,7 +15,7 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  *
- * $OpenBSD: xevents.c,v 1.123 2016/10/03 13:41:30 okan Exp $
+ * $OpenBSD: xevents.c,v 1.124 2016/10/04 20:15:55 okan Exp $
  */
 
 /*
@@ -386,6 +386,7 @@ xev_handle_randr(XEvent *ee)
 		if (sc->which == i) {
 			XRRUpdateConfiguration(ee);
 			screen_update_geometry(sc);
+			screen_assert_clients_within(sc);
 		}
 	}
 }
-- 
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