xi: Implement internal gesture event struct

include/events.h

@@ -28,6 +28,7 @@ typedef struct _DeviceEvent DeviceEvent;
 typedef struct _DeviceChangedEvent DeviceChangedEvent;
 typedef struct _TouchOwnershipEvent TouchOwnershipEvent;
 typedef struct _BarrierEvent BarrierEvent;
+typedef struct _GestureEvent GestureEvent;
 
 #ifdef XFreeXDGA
 typedef struct _DGAEvent DGAEvent;

include/eventstr.h

@@ -266,6 +266,38 @@ struct _BarrierEvent {
     uint32_t flags;
 };
 
+struct _GestureEvent {
+    unsigned char header; /**< Always ET_Internal */
+    enum EventType type;  /**< One of ET_Gesture{Pinch,Swipe}{Begin,Update,End} */
+    int length;           /**< Length in bytes */
+    Time time;            /**< Time in ms */
+    int deviceid;         /**< Device to post this event for */
+    int sourceid;         /**< The physical source device */
+    uint32_t num_touches; /**< The number of touches in this gesture */
+    double root_x;        /**< Pos relative to root window */
+    double root_y;        /**< Pos relative to root window */
+    double delta_x;
+    double delta_y;
+    double delta_unaccel_x;
+    double delta_unaccel_y;
+    double scale;         /**< Only on ET_GesturePinch{Begin,Update} */
+    double delta_angle;   /**< Only on ET_GesturePinch{Begin,Update} */
+    struct {
+        uint32_t base;    /**< XKB base modifiers */
+        uint32_t latched; /**< XKB latched modifiers */
+        uint32_t locked;  /**< XKB locked modifiers */
+        uint32_t effective;/**< XKB effective modifiers */
+    } mods;
+    struct {
+        uint8_t base;    /**< XKB base group */
+        uint8_t latched; /**< XKB latched group */
+        uint8_t locked;  /**< XKB locked group */
+        uint8_t effective;/**< XKB effective group */
+    } group;
+    Window root;      /**< Root window of the event */
+    uint32_t flags;   /**< Flags to be copied into the generated event */
+};
+
 #ifdef XQUARTZ
 #define XQUARTZ_EVENT_MAXARGS 5
 struct _XQuartzEvent {
@@ -300,6 +332,7 @@ union _InternalEvent {
 #ifdef XQUARTZ
     XQuartzEvent xquartz_event;
 #endif
+    GestureEvent gesture_event;
 };
 
 #endif