Lines Matching full:pressure
234 <p><code>ABS_PRESSURE</code>: <em>(optional)</em> Reports the physical pressure applied to the tip
279 <p><code>ABS_MT_PRESSURE</code>: <em>(optional)</em> Reports the physical pressure applied to the
382 <p>Reporting pressure information is <em>optional</em> but strongly recommended.
383 Applications can use pressure information to implement pressure-sensitive drawing
393 Applications can use pressure information to implement size-sensitive drawing
456 <p>If the tool is active and the driver reports pressure information,
457 and the reported pressure is zero, then the tool is hovering.</p>
480 a pressure value of 0. The old behavior was incompatible with the
484 <p>Physical pressure or signal strength information should be reported using
486 <p>Previous versions of Android retrieved pressure information from
575 <dt><code>raw.pressure</code></dt>
876 <h3 id="pressure-field"><code>Pressure</code> Field</h3>
877 <p>The <code>Pressure</code> field describes the approximate physical pressure applied to the
879 <p>A zero pressure indicates that the tool is hovering.</p>
880 <h4 id="touchpressurecalibration"><code>touch.pressure.calibration</code></h4>
881 <p><em>Definition:</em> <code>touch.pressure.calibration</code> = <code>none</code> | <code>physical</code> | <code>amplitude</code> | <code>default</code></p>
882 <p>Specifies the kind of measurement used by the touch driver to report the pressure.</p>
885 <p>If the value is <code>none</code>, the pressure is unknown so it is set to 1.0 when
889 <p>If the value is <code>physical</code>, the pressure axis is assumed to measure the actual
890 physical intensity of pressure applied to the touch pad.</p>
893 <p>If the value is <code>amplitude</code>, the pressure axis is assumed to measure the signal
894 amplitude, which is related to the size of the contact and the pressure applied.</p>
898 pressure axis available, otherwise uses <code>none</code>.</p>
901 <h4 id="touchpressurescale"><code>touch.pressure.scale</code></h4>
902 <p><em>Definition:</em> <code>touch.pressure.scale</code> = <a non-negative floating point number></p>
904 <p>The default value is <code>1.0 / raw.pressure.max</code>.</p>
906 <p>The calculation of the <code>Pressure</code> field depends on the specified calibration parameters.</p>
907 <pre><code>If touch.pressure.calibration == "physical" or "amplitude":
908 output.pressure = raw.pressure * touch.pressure.scale
911 output.pressure = 0
913 output.pressure = 1
1035 <pre><code># Input device configuration file for a touch screen that supports pressure,
1036 # size and orientation. The pressure and size scale factors were obtained
1056 # Pressure
1057 # Driver reports signal strength as pressure.
1061 touch.pressure.calibration = amplitude
1062 touch.pressure.scale = 0.0125
