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NXWidgets::CImage needs to catch mouse/touchscreen events; All touchscreen drivers need to report the last valid X/Y data when the screen is untouched.

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4731 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2012-05-13 18:28:43 +00:00
parent 4da2091db0
commit 776db19800
7 changed files with 103 additions and 34 deletions
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drivers/input/tsc2007.c
+30 -4
View File
@@ -1,7 +1,7 @@
/****************************************************************************
* drivers/input/tsc2007.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* References:
@@ -142,6 +142,7 @@ struct tsc2007_sample_s
{
uint8_t id; /* Sampled touch point ID */
uint8_t contact; /* Contact state (see enum tsc2007_contact_e) */
bool valid; /* True: x,y,pressure contain valid, sampled data */
uint16_t x; /* Measured X position */
uint16_t y; /* Measured Y position */
uint16_t pressure; /* Calculated pressure */
@@ -314,9 +315,12 @@ static int tsc2007_sample(FAR struct tsc2007_dev_s *priv,
if (sample->contact == CONTACT_UP)
{
/* Next.. no contract. Increment the ID so that next contact ID will be unique */
/* Next.. no contact. Increment the ID so that next contact ID
* will be unique. X/Y positions are no longer valid.
*/
priv->sample.contact = CONTACT_NONE;
priv->sample.valid = false;
priv->id++;
}
else if (sample->contact == CONTACT_DOWN)
@@ -586,6 +590,16 @@ static void tsc2007_worker(FAR void *arg)
goto errout;
}
}
/* It is a pen down event. If the last loss-of-contact event has not been
* processed yet, then we have to ignore the pen down event (or else it will
* look like a drag event)
*/
else if (priv->sample.contact == CONTACT_UP)
{
goto errout;
}
else
{
/* Handle all pen down events. First, sample X, Y, Z1, and Z2 values.
@@ -678,6 +692,7 @@ static void tsc2007_worker(FAR void *arg)
priv->sample.x = x;
priv->sample.y = y;
priv->sample.pressure = pressure;
priv->sample.valid = true;
}
/* Note the availability of new measurements */
@@ -956,9 +971,20 @@ static ssize_t tsc2007_read(FAR struct file *filep, FAR char *buffer, size_t len
if (sample.contact == CONTACT_UP)
{
/* Pen is now up */
/* Pen is now up. Is the positional data valid? This is important to
* know because the release will be sent to the window based on its
* last positional data.
*/
report->point[0].flags = TOUCH_UP | TOUCH_ID_VALID;
if (sample.valid)
{
report->point[0].flags = TOUCH_UP | TOUCH_ID_VALID |
TOUCH_POS_VALID | TOUCH_PRESSURE_VALID;
}
else
{
report->point[0].flags = TOUCH_UP | TOUCH_ID_VALID;
}
}
else
{