From 01491a96d3ce3b7bb55959504aa01c5bc5f7de4e Mon Sep 17 00:00:00 2001
From: raincomplex <raincomplex@gmail.com>
Date: Wed, 24 Dec 2014 15:08:02 -0500
Subject: [PATCH] Mark windows changed on Expose

On i3wm, windows aren't unmapped when switching away from a window's
workspace, but it does cause OBS to lose the capture. Because
switching back will not trigger a MapNotify, the capture fails to
restart unless you resize or move the window (ConfigureNotify). An
Expose event is fired by the wm, however, so catching this correctly
restarts the capture.
---
 plugins/linux-capture/xcompcap-helper.cpp | 3 +++
 plugins/linux-capture/xcompcap-main.cpp   | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/plugins/linux-capture/xcompcap-helper.cpp b/plugins/linux-capture/xcompcap-helper.cpp
index f44fdbab6..4ff158ab3 100644
--- a/plugins/linux-capture/xcompcap-helper.cpp
+++ b/plugins/linux-capture/xcompcap-helper.cpp
@@ -186,6 +186,9 @@ namespace XCompcap
 			if (ev.type == MapNotify)
 				changedWindows.insert(ev.xmap.event);
 
+			if (ev.type == Expose)
+				changedWindows.insert(ev.xexpose.window);
+
 			if (ev.type == DestroyNotify)
 				changedWindows.insert(ev.xdestroywindow.event);
 		}
diff --git a/plugins/linux-capture/xcompcap-main.cpp b/plugins/linux-capture/xcompcap-main.cpp
index 4448a7946..ebbc73e57 100644
--- a/plugins/linux-capture/xcompcap-main.cpp
+++ b/plugins/linux-capture/xcompcap-main.cpp
@@ -296,7 +296,7 @@ void XCompcapMain::updateSettings(obs_data_t *settings)
 		return;
 	}
 
-	XSelectInput(xdisp, p->win, StructureNotifyMask);
+	XSelectInput(xdisp, p->win, StructureNotifyMask | ExposureMask);
 	XSync(xdisp, 0);
 
 	XWindowAttributes attr;