initial state (xorg-server 1.10.2)

1 files changed, 140 insertions, 0 deletions

diff --git a/include/ptrveloc.h b/include/ptrveloc.h
new file mode 100644
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--- /dev/null
+++ b/include/ptrveloc.h
@@ -0,0 +1,140 @@
+/*
+ *
+ * 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_INTERNAL BOOL
+InitializePredictableAccelerationProperties(DeviceIntPtr dev);
+
+extern _X_INTERNAL BOOL
+DeletePredictableAccelerationProperties(DeviceIntPtr dev);
+
+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 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 */