From a21da73772583801f6f6b4d6b77ec906a2b0975b Mon Sep 17 00:00:00 2001
From: tissoire
Date: Tue, 15 May 2012 12:28:16 +0000
Subject: fix segfault when using xinput2 and retrieving time information

---
 src/ivypointer.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/ivypointer.c b/src/ivypointer.c
index dbc9c72..c365042 100644
--- a/src/ivypointer.c
+++ b/src/ivypointer.c
@@ -80,6 +80,8 @@
 
 #define CHAMP_X_WACOM 12
 #define CHAMP_Y_WACOM 13
+#define CHAMP_TIME_WACOM 11
+#define CHAMP_PRESSURE_WACOM 3
 
 #define CHAMP_X_WACOM_BUTTON 14
 #define CHAMP_Y_WACOM_BUTTON 15
@@ -95,6 +97,8 @@
 
 #define CHAMP_X_WACOM_2 1
 #define CHAMP_Y_WACOM_2 2
+#define CHAMP_TIME_XINPUT_2 4
+#define CHAMP_PRESSURE_XINPUT_2 3
 
 #define CHAMP_X_WACOM_BUTTON_2 1
 #define CHAMP_Y_WACOM_BUTTON_2 2
@@ -134,6 +138,8 @@ static int champX;
 static int champY;
 static int champXButton;
 static int champYButton;
+static int champTime;
+static int champPressure;
 
 static float old_x = 0;
 static float old_y = 0;
@@ -354,8 +360,8 @@ static void CallbackPointer (IvyClientPtr app, void *user_data, int argc, char *
 	//	char *id = argv[0];
 	float x = atof(argv[champX]); // predicted position
 	float y = atof(argv[champY]); // predicted position
-	int time = atoi(argv[11-device_input_id_given]);
-	int presure = atoi(argv[3-device_input_id_given]);
+	int time = atoi(argv[champTime]);
+	int presure = atoi(argv[champPressure]);
 	static int old_time = 0;
 	static int should_click = 0;
 	static int clicked = 0;
@@ -652,6 +658,8 @@ int main(int argc, char *argv[]) {
 			champXButton = CHAMP_X_WACOM_PREDICTIVE_BUTTON;
 			champYButton = CHAMP_Y_WACOM_PREDICTIVE_BUTTON;
 		}
+		champTime = CHAMP_TIME_WACOM;
+		champPressure = CHAMP_PRESSURE_WACOM;
 		break;
 	case XINPUT2:
 		coords_input[2] = 104480.0;
@@ -660,6 +668,8 @@ int main(int argc, char *argv[]) {
 		champY = CHAMP_Y_WACOM_2;
 		champXButton = CHAMP_X_WACOM_BUTTON_2;
 		champYButton = CHAMP_Y_WACOM_BUTTON_2;
+		champTime = CHAMP_TIME_XINPUT_2;
+		champPressure = CHAMP_PRESSURE_XINPUT_2;
 		break;
 	default:
 		champX = CHAMP_X_TELEPOINTEUR;
@@ -670,6 +680,8 @@ int main(int argc, char *argv[]) {
 	champY -= device_input_id_given;
 	champXButton -= device_input_id_given;
 	champYButton -= device_input_id_given;
+	champTime -= device_input_id_given;
+	champPressure -= device_input_id_given;
 
 	width_input  = coords_input[2]-coords_input[0];
 	height_input = coords_input[3]-coords_input[1];
-- 
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