51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/* SPDX-License-Identifier: MIT OR X11
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*
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* Copyright © 2024 Enrico Weigelt, metux IT consult <info@metux.net>
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* Copyright © 2006-2011 Simon Thum simon dot thum at gmx dot de
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*/
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#ifndef _XSERVER_POINTERVELOCITY_PRIV_H
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#define _XSERVER_POINTERVELOCITY_PRIV_H
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#include <input.h>
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#include "ptrveloc.h"
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/* fwd */
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struct _DeviceVelocityRec;
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/**
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* a motion history, with just enough information to
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* calc mean velocity and decide which motion was along
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* a more or less straight line
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*/
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struct _MotionTracker {
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double dx, dy; /* accumulated delta for each axis */
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int time; /* time of creation */
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int dir; /* initial direction bitfield */
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};
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/**
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* contains the run-time data for the predictable scheme, that is, a
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* DeviceVelocityPtr and the property handlers.
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*/
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typedef struct _PredictableAccelSchemeRec {
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DeviceVelocityPtr vel;
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long *prop_handlers;
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int num_prop_handlers;
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} PredictableAccelSchemeRec, *PredictableAccelSchemePtr;
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void AccelerationDefaultCleanup(DeviceIntPtr dev);
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Bool InitPredictableAccelerationScheme(DeviceIntPtr dev,
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struct _ValuatorAccelerationRec *protoScheme);
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void acceleratePointerPredictable(DeviceIntPtr dev, ValuatorMask *val,
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CARD32 evtime);
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void acceleratePointerLightweight(DeviceIntPtr dev, ValuatorMask *val,
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CARD32 evtime);
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void InitTrackers(DeviceVelocityPtr vel, int ntracker);
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#endif /* _XSERVER_POINTERVELOCITY_PRIV_H */
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