text: # Copyright (C) 2010 The Android Open Source Project
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  #
  # Input Device Calibration File for the ace touch screen.
  #
  # These calibration values are derived from empirical measurements
  # and may not be appropriate for use with other touch screens.
  # Refer to the input device calibration documentation for more details.
  #
  
  # Touch Size
  touch.touchSize.calibration = pressure
  
  # Tool Size
  # Driver reports tool size as a linear width measurement summed over
  # all contact points.
  #
  # Raw width field measures approx. 1 unit per millimeter
  # of tool size on the surface where a raw width of 1 corresponds
  # to about 17mm of physical size.  Given that the display resolution
  # is 10px per mm we obtain a scale factor of 10 pixels / unit and
  # a bias of 160 pixels.  In addition, the raw width represents a
  # sum of all contact area so we note this fact in the calibration.
  touch.toolSize.calibration = linear
  touch.toolSize.linearScale = 10
  touch.toolSize.linearBias = 160
  touch.toolSize.isSummed = 1
  
  # Pressure
  # Driver reports signal strength as pressure.
  #
  # A normal thumb touch while touching the back of the device
  # typically registers about 100 signal strength units although
  # this value is highly variable and is sensitive to contact area,
  # manner of contact and environmental conditions.  We set the
  # scale so that a normal touch with good signal strength will be
  # reported as having a pressure somewhere in the vicinity of 1.0,
  # a featherlight touch will be below 1.0 and a heavy or large touch
  # will be above 1.0.  We don't expect these values to be accurate.
  touch.pressure.calibration = amplitude
  touch.pressure.source = default
  touch.pressure.scale = 0.01
  
  # Size
  touch.size.calibration = normalized
  
  # Orientation
  touch.orientation.calibration = none
  
  # Type
  touch.deviceType = touchScreen
  