diff options
Diffstat (limited to 'xorg-server/include/ptrveloc.h')
-rw-r--r-- | xorg-server/include/ptrveloc.h | 282 |
1 files changed, 144 insertions, 138 deletions
diff --git a/xorg-server/include/ptrveloc.h b/xorg-server/include/ptrveloc.h index 8c59c0361..1198146f1 100644 --- a/xorg-server/include/ptrveloc.h +++ b/xorg-server/include/ptrveloc.h @@ -1,138 +1,144 @@ -/* - * - * Copyright © 2006-2009 Simon Thum simon dot thum at gmx dot de - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -#ifndef POINTERVELOCITY_H -#define POINTERVELOCITY_H - -#include <input.h> /* DeviceIntPtr */ - -/* constants for acceleration profiles */ - -#define AccelProfileNone -1 -#define AccelProfileClassic 0 -#define AccelProfileDeviceSpecific 1 -#define AccelProfilePolynomial 2 -#define AccelProfileSmoothLinear 3 -#define AccelProfileSimple 4 -#define AccelProfilePower 5 -#define AccelProfileLinear 6 -#define AccelProfileSmoothLimited 7 -#define AccelProfileLAST AccelProfileSmoothLimited - -/* fwd */ -struct _DeviceVelocityRec; - -/** - * profile - * returns actual acceleration depending on velocity, acceleration control,... - */ -typedef float (*PointerAccelerationProfileFunc) - (DeviceIntPtr dev, struct _DeviceVelocityRec* vel, - float velocity, float threshold, float accelCoeff); - -/** - * a motion history, with just enough information to - * calc mean velocity and decide which motion was along - * a more or less straight line - */ -typedef struct _MotionTracker { - int dx, dy; /* accumulated delta for each axis */ - int time; /* time of creation */ - int dir; /* initial direction bitfield */ -} MotionTracker, *MotionTrackerPtr; - -/* number of properties for predictable acceleration */ -#define NPROPS_PREDICTABLE_ACCEL 4 - -/** - * Contains all data needed to implement mouse ballistics - */ -typedef struct _DeviceVelocityRec { - MotionTrackerPtr tracker; - int num_tracker; - int cur_tracker; /* current index */ - float velocity; /* velocity as guessed by algorithm */ - float last_velocity; /* previous velocity estimate */ - int last_dx; /* last time-difference */ - int last_dy ; /* phase of last/current estimate */ - float corr_mul; /* config: multiply this into velocity */ - float const_acceleration; /* config: (recipr.) const deceleration */ - float min_acceleration; /* config: minimum acceleration */ - short reset_time; /* config: reset non-visible state after # ms */ - short use_softening; /* config: use softening of mouse values */ - float max_rel_diff; /* config: max. relative difference */ - float max_diff; /* config: max. difference */ - int initial_range; /* config: max. offset used as initial velocity */ - Bool average_accel; /* config: average acceleration over velocity */ - PointerAccelerationProfileFunc Profile; - PointerAccelerationProfileFunc deviceSpecificProfile; - void* profile_private;/* extended data, see SetAccelerationProfile() */ - struct { /* to be able to query this information */ - int profile_number; - } statistics; - long prop_handlers[NPROPS_PREDICTABLE_ACCEL]; -} DeviceVelocityRec, *DeviceVelocityPtr; - -extern _X_EXPORT void -InitVelocityData(DeviceVelocityPtr vel); - -extern _X_EXPORT void -InitTrackers(DeviceVelocityPtr vel, int ntracker); - -extern _X_EXPORT short -ProcessVelocityData2D(DeviceVelocityPtr vel, int dx, int dy, int time); - -extern _X_EXPORT float -BasicComputeAcceleration(DeviceIntPtr dev, DeviceVelocityPtr vel, - float velocity, float threshold, float acc); - -extern _X_EXPORT void -FreeVelocityData(DeviceVelocityPtr vel); - -extern _X_EXPORT int -SetAccelerationProfile(DeviceVelocityPtr vel, int profile_num); - -extern _X_EXPORT DeviceVelocityPtr -GetDevicePredictableAccelData(DeviceIntPtr dev); - -extern _X_EXPORT void -SetDeviceSpecificAccelerationProfile(DeviceVelocityPtr vel, - PointerAccelerationProfileFunc profile); - -extern _X_INTERNAL void -AccelerationDefaultCleanup(DeviceIntPtr dev); - -extern _X_INTERNAL Bool -InitPredictableAccelerationScheme(DeviceIntPtr dev, - struct _ValuatorAccelerationRec* protoScheme); - -extern _X_INTERNAL void -acceleratePointerPredictable(DeviceIntPtr dev, int first_valuator, - int num_valuators, int *valuators, int evtime); - -extern _X_INTERNAL void -acceleratePointerLightweight(DeviceIntPtr dev, int first_valuator, - int num_valuators, int *valuators, int ignored); - -#endif /* POINTERVELOCITY_H */ +/*
+ *
+ * Copyright © 2006-2011 Simon Thum simon dot thum at gmx dot de
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef POINTERVELOCITY_H
+#define POINTERVELOCITY_H
+
+#include <input.h>
+
+/* constants for acceleration profiles */
+
+#define AccelProfileNone -1
+#define AccelProfileClassic 0
+#define AccelProfileDeviceSpecific 1
+#define AccelProfilePolynomial 2
+#define AccelProfileSmoothLinear 3
+#define AccelProfileSimple 4
+#define AccelProfilePower 5
+#define AccelProfileLinear 6
+#define AccelProfileSmoothLimited 7
+#define AccelProfileLAST AccelProfileSmoothLimited
+
+/* fwd */
+struct _DeviceVelocityRec;
+
+/**
+ * profile
+ * returns actual acceleration depending on velocity, acceleration control,...
+ */
+typedef float (*PointerAccelerationProfileFunc)
+ (DeviceIntPtr dev, struct _DeviceVelocityRec* vel,
+ float velocity, float threshold, float accelCoeff);
+
+/**
+ * a motion history, with just enough information to
+ * calc mean velocity and decide which motion was along
+ * a more or less straight line
+ */
+typedef struct _MotionTracker {
+ int dx, dy; /* accumulated delta for each axis */
+ int time; /* time of creation */
+ int dir; /* initial direction bitfield */
+} MotionTracker, *MotionTrackerPtr;
+
+/**
+ * Contains all data needed to implement mouse ballistics
+ */
+typedef struct _DeviceVelocityRec {
+ MotionTrackerPtr tracker;
+ int num_tracker;
+ int cur_tracker; /* current index */
+ float velocity; /* velocity as guessed by algorithm */
+ float last_velocity; /* previous velocity estimate */
+ int last_dx; /* last time-difference */
+ int last_dy ; /* phase of last/current estimate */
+ float corr_mul; /* config: multiply this into velocity */
+ float const_acceleration; /* config: (recipr.) const deceleration */
+ float min_acceleration; /* config: minimum acceleration */
+ short reset_time; /* config: reset non-visible state after # ms */
+ short use_softening; /* config: use softening of mouse values */
+ float max_rel_diff; /* config: max. relative difference */
+ float max_diff; /* config: max. difference */
+ int initial_range; /* config: max. offset used as initial velocity */
+ Bool average_accel; /* config: average acceleration over velocity */
+ PointerAccelerationProfileFunc Profile;
+ PointerAccelerationProfileFunc deviceSpecificProfile;
+ void* profile_private;/* extended data, see SetAccelerationProfile() */
+ struct { /* to be able to query this information */
+ int profile_number;
+ } statistics;
+} DeviceVelocityRec, *DeviceVelocityPtr;
+
+/**
+ * contains the run-time data for the predictable scheme, that is, a
+ * DeviceVelocityPtr and the property handlers.
+ */
+typedef struct _PredictableAccelSchemeRec {
+ DeviceVelocityPtr vel;
+ long* prop_handlers;
+ int num_prop_handlers;
+} PredictableAccelSchemeRec, *PredictableAccelSchemePtr;
+
+extern _X_EXPORT void
+InitVelocityData(DeviceVelocityPtr vel);
+
+extern _X_EXPORT void
+InitTrackers(DeviceVelocityPtr vel, int ntracker);
+
+extern _X_EXPORT short
+ProcessVelocityData2D(DeviceVelocityPtr vel, int dx, int dy, int time);
+
+extern _X_EXPORT float
+BasicComputeAcceleration(DeviceIntPtr dev, DeviceVelocityPtr vel,
+ float velocity, float threshold, float acc);
+
+extern _X_EXPORT void
+FreeVelocityData(DeviceVelocityPtr vel);
+
+extern _X_EXPORT int
+SetAccelerationProfile(DeviceVelocityPtr vel, int profile_num);
+
+extern _X_EXPORT DeviceVelocityPtr
+GetDevicePredictableAccelData(DeviceIntPtr dev);
+
+extern _X_EXPORT void
+SetDeviceSpecificAccelerationProfile(DeviceVelocityPtr vel,
+ PointerAccelerationProfileFunc profile);
+
+extern _X_INTERNAL void
+AccelerationDefaultCleanup(DeviceIntPtr dev);
+
+extern _X_INTERNAL Bool
+InitPredictableAccelerationScheme(DeviceIntPtr dev,
+ struct _ValuatorAccelerationRec* protoScheme);
+
+extern _X_INTERNAL void
+acceleratePointerPredictable(DeviceIntPtr dev, ValuatorMask* val,
+ CARD32 evtime);
+
+extern _X_INTERNAL void
+acceleratePointerLightweight(DeviceIntPtr dev, ValuatorMask* val,
+ CARD32 evtime);
+
+#endif /* POINTERVELOCITY_H */
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