From f4a8137412f02ae1ceabcc5b98a053e69cf09834 Mon Sep 17 00:00:00 2001
From: Aidan Epstein <aidan@jmad.org>
Date: Tue, 28 Mar 2017 17:57:14 -0500
Subject: [PATCH] linux-capture: Watch for VisibilityNotify events

Some window managers like i3 don't issue Expose events when switching
between workspaces, but send VisibilityNotify events. This causes the
stream to freeze even when the workspace is switched back.

Related issue: #863
---
 plugins/linux-capture/xcompcap-helper.cpp | 3 +++
 plugins/linux-capture/xcompcap-main.cpp   | 5 ++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/plugins/linux-capture/xcompcap-helper.cpp b/plugins/linux-capture/xcompcap-helper.cpp
index cf4f0f6ab..55657f822 100644
--- a/plugins/linux-capture/xcompcap-helper.cpp
+++ b/plugins/linux-capture/xcompcap-helper.cpp
@@ -267,6 +267,9 @@ namespace XCompcap
 			if (ev.type == Expose)
 				changedWindows.insert(ev.xexpose.window);
 
+			if (ev.type == VisibilityNotify)
+				changedWindows.insert(ev.xvisibility.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 7a09ecbbf..50c2d9974 100644
--- a/plugins/linux-capture/xcompcap-main.cpp
+++ b/plugins/linux-capture/xcompcap-main.cpp
@@ -318,7 +318,10 @@ void XCompcapMain::updateSettings(obs_data_t *settings)
 	}
 
 	if (p->win)
-		XSelectInput(xdisp, p->win, StructureNotifyMask | ExposureMask);
+		XSelectInput(xdisp, p->win,
+			StructureNotifyMask
+			| ExposureMask
+			| VisibilityChangeMask);
 	XSync(xdisp, 0);
 
 	XWindowAttributes attr;