Cancel touch events when a low-level touch gesture occurs.
When the touch firmware or driver sends a key event that is triggered
by a low-level gesture such as a palm slap. For this to work, the
touch device's .kl file must specify the "GESTURE" flag for each
key that is produced by a gesture.
Note that the "VIRTUAL" flag should also be specified for any such
keys for which we would like to generate haptic feedback.
eg. key 142 SLEEP VIRTUAL GESTURE
Bug: 19264992
Change-Id: Ief494ec7e3ca66d2358a1001fdfae4f263ee1cd1
diff --git a/include/input/Input.h b/include/input/Input.h
index 96b6885..c360f63 100644
--- a/include/input/Input.h
+++ b/include/input/Input.h
@@ -149,10 +149,22 @@
* NOTE: If you want a flag to be able to set in a keylayout file, then you must add it to
* InputEventLabels.h as well. */
+ // Indicates that the event should wake the device.
POLICY_FLAG_WAKE = 0x00000001,
+
+ // Indicates that the key is virtual, such as a capacitive button, and should
+ // generate haptic feedback. Virtual keys may be suppressed for some time
+ // after a recent touch to prevent accidental activation of virtual keys adjacent
+ // to the touch screen during an edge swipe.
POLICY_FLAG_VIRTUAL = 0x00000002,
+
+ // Indicates that the key is the special function modifier.
POLICY_FLAG_FUNCTION = 0x00000004,
+ // Indicates that the key represents a special gesture that has been detected by
+ // the touch firmware or driver. Causes touch events from the same device to be canceled.
+ POLICY_FLAG_GESTURE = 0x00000008,
+
POLICY_FLAG_RAW_MASK = 0x0000ffff,
/* These flags are set by the input dispatcher. */