From cd7e0576e5aee07dc8ce2404cd960110179b05c1 Mon Sep 17 00:00:00 2001
From: John Tsiombikas <nuclear@member.fsf.org>
Date: Thu, 12 Feb 2015 04:17:13 +0000
Subject: [PATCH] trying to remove devices from Xinput

git-svn-id: svn+ssh://svn.code.sf.net/p/spacenav/code/trunk/spacenavd@187 ef983eb1-d774-4af8-acfd-baaf7b16a646
---
 configure           |  7 ++++++-
 src/dev.c           |  3 +++
 src/dev.h           |  2 +-
 src/dev_usb_linux.c |  3 +++
 src/proto_x11.c     | 44 ++++++++++++++++++++++++++++++++++++++++++++
 src/proto_x11.h     |  2 ++
 6 files changed, 59 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 2795a3c..ce6b1c4 100755
--- a/configure
+++ b/configure
@@ -28,7 +28,7 @@ test_kver() {
 check_header() {
 	echo "#include <$1>" >.chkhdr.c
 	if cpp .chkhdr.c >/dev/null 2>&1; then
-		echo "#define HAVE_`echo $1 | tr '[:lower:]' '[:upper:]' | sed 's/\./_/g'`"
+		echo "#define HAVE_`basename $1 | tr '[:lower:]' '[:upper:]' | sed 's/\./_/g'`"
 	fi
 	rm -f .chkhdr.c
 }
@@ -39,6 +39,7 @@ OPT=yes
 DBG=yes
 X11=yes
 HOTPLUG=yes
+XINPUT=yes
 VER=`head -1 README | sed 's/^.*- //'`
 
 if echo $VER | grep '$Rev' >/dev/null; then
@@ -140,6 +141,9 @@ fi
 
 if [ "$X11" = 'yes' ]; then
 	echo 'xlib = -L/usr/X11/lib -lX11' >>Makefile
+	if [ -n "`check_header X11/extensions/XInput2.h 2>&1`" ]; then
+		echo 'xlib += -lXi' >>Makefile
+	fi
 fi
 
 if [ -n "$add_cflags" ]; then
@@ -170,6 +174,7 @@ echo >>src/config.h
 
 # check for alloca.h
 check_header alloca.h >>src/config.h
+check_header X11/extensions/XInput2.h >>src/config.h
 
 echo >>src/config.h
 echo '#endif	/* CONFIG_H_ */' >>src/config.h
diff --git a/src/dev.c b/src/dev.c
index 7fbfc02..8628b25 100644
--- a/src/dev.c
+++ b/src/dev.c
@@ -25,6 +25,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "dev_serial.h"
 #include "event.h" /* remove pending events upon device removal */
 #include "spnavd.h"
+#include "proto_x11.h"
 
 static struct device *add_device(void);
 static struct device *dev_path_in_use(char const * dev_path);
@@ -86,6 +87,8 @@ int init_devices(void)
 		fprintf(stderr, "failed to find any supported devices\n");
 		return -1;
 	}
+
+	drop_xinput();
 	return 0;
 }
 
diff --git a/src/dev.h b/src/dev.h
index f7ef691..8bf68b4 100644
--- a/src/dev.h
+++ b/src/dev.h
@@ -39,7 +39,7 @@ struct device {
 	int (*read)(struct device*, struct dev_input*);
 	void (*set_led)(struct device*, int);
 
-  struct device *next;
+	struct device *next;
 };
 
 int init_devices(void);
diff --git a/src/dev_usb_linux.c b/src/dev_usb_linux.c
index 6d1dac3..ad1262a 100644
--- a/src/dev_usb_linux.c
+++ b/src/dev_usb_linux.c
@@ -229,6 +229,9 @@ static int read_evdev(struct device *dev, struct dev_input *inp)
 			break;
 
 		default:
+			if(verbose) {
+				printf("unexpected event: %d\n", iev.type);
+			}
 			return -1;
 		}
 	}
diff --git a/src/proto_x11.c b/src/proto_x11.c
index a338ff8..86ebc6f 100644
--- a/src/proto_x11.c
+++ b/src/proto_x11.c
@@ -35,9 +35,15 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "proto_x11.h"
 #include "client.h"
 #include "spnavd.h"
+#include "dev.h"
 #include "xdetect.h"
 #include "kbemu.h"
 
+#ifdef HAVE_XINPUT2_H
+#include <X11/Xatom.h>
+#include <X11/extensions/XInput2.h>
+#endif
+
 
 enum cmd_msg {
 	CMD_NONE,
@@ -168,6 +174,8 @@ int init_x11(void)
 	kbemu_set_display(dpy);
 
 	xdet_stop();	/* stop X server detection if it was running */
+
+	drop_xinput();
 	return 0;
 }
 
@@ -346,6 +354,42 @@ void remove_client_window(Window win)
 	}
 }
 
+void drop_xinput(void)
+{
+#ifdef HAVE_XINPUT2_H
+	XIDeviceInfo *xidevs;
+	int i, num_devs;
+	static Atom atom_enabled;
+
+	if(!dpy) return;
+
+	if(!atom_enabled) {
+		atom_enabled = XInternAtom(dpy, "Device Enabled", False);
+	}
+
+	if(!(xidevs = XIQueryDevice(dpy, XIAllDevices, &num_devs))) {
+		fprintf(stderr, "failed to query XInput2 devices\n");
+		return;
+	}
+
+	for(i=0; i<num_devs; i++) {
+		struct device *dev = get_devices();
+		while(dev) {
+			if(strcmp(dev->name, xidevs[i].name) == 0 && xidevs[i].enabled) {
+				unsigned char zero = 0;
+				printf("Removing device \"%s\" from X server\n", dev->name);
+
+				XIChangeProperty(dpy, xidevs[i].deviceid, atom_enabled, XA_INTEGER, 8, PropModeReplace, &zero, 1);
+				break;
+			}
+			dev = dev->next;
+		}
+	}
+	XIFreeDeviceInfo(xidevs);
+
+#endif	/* HAVE_XINPUT2_H */
+}
+
 
 /* X11 error handler */
 static int xerr(Display *dpy, XErrorEvent *err)
diff --git a/src/proto_x11.h b/src/proto_x11.h
index 6b78361..49881e5 100644
--- a/src/proto_x11.h
+++ b/src/proto_x11.h
@@ -37,5 +37,7 @@ int handle_xevents(fd_set *rset);
 void set_client_window(Window win);
 void remove_client_window(Window win);
 
+void drop_xinput(void);
+
 
 #endif	/* PROTO_X11_H_ */