From a9d72b40fbe178fa4fbb9d0e7c02dc6c5250969a Mon Sep 17 00:00:00 2001
From: Chris Salch <emeraldd.chris@gmail.com>
Date: Wed, 6 Aug 2008 22:08:13 -0500
Subject: Adding mouse wheel emulation code.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---
 src/evdev.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'src/evdev.h')

diff --git a/src/evdev.h b/src/evdev.h
index 56983c2..83f03f4 100644
--- a/src/evdev.h
+++ b/src/evdev.h
@@ -40,6 +40,13 @@
 #include <X11/extensions/XKBstr.h>
 #endif
 
+/* axis specific data for wheel emulation */
+typedef struct {
+    int up_button;
+    int down_button;
+    int traveled_distance;
+} WheelAxis, *WheelAxisPtr;
+
 typedef struct {
     int kernel24;
     int screen;
@@ -68,6 +75,14 @@ typedef struct {
         Time                expires;     /* time of expiry */
         Time                timeout;
     } emulateMB;
+    struct {
+        BOOL                enabled;
+        int                 button;
+        int                 button_state;
+        int                 inertia;
+        WheelAxis           X;
+        WheelAxis           Y;
+    } emulateWheel;
 
     unsigned char btnmap[32];           /* config-file specified button mapping */
 } EvdevRec, *EvdevPtr;
@@ -89,4 +104,9 @@ Atom EvdevMBEmuInitPropertyTimeout(DeviceIntPtr, char*);
 BOOL EvdevMBEmuSetProperty(DeviceIntPtr, Atom, XIPropertyValuePtr);
 #endif
 
+/* Mouse Wheel emulation */
+void EvdevWheelEmuPreInit(InputInfoPtr pInfo);
+BOOL EvdevWheelEmuFilterButton(InputInfoPtr pInfo, unsigned int button, int value);
+BOOL EvdevWheelEmuFilterMotion(InputInfoPtr pInfo, struct input_event *pEv);
+
 #endif
-- 
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