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Commit 8576dd70 authored by Vaibhav's avatar Vaibhav
Browse files

Add new NDK function definitions in input.h 

This CL adds 2 new functions to get ActionButton and Classification from
a MotionEvent.

Test: atest android.view.cts.MotionEventTest

Bug: 213266814

Change-Id: Id264a5d110c6c65a7daae89194ab234f64832e13
parent 9df93aa6

include/android/input.h

+44 −0
Original line number Diff line number Diff line
@@ -807,6 +807,33 @@ enum { 
    AMOTION_EVENT_TOOL_TYPE_PALM = 5,

};



/**

 * Constants that identify different gesture classification types.

 */

enum {

    /**

     * Classification constant: None.

     *

     * No additional information is available about the current motion event stream.

     */

    AMOTION_EVENT_CLASSIFICATION_NONE = 0,

    /**

     * Classification constant: Ambiguous gesture.

     *

     * The user's intent with respect to the current event stream is not yet determined.

     * Gestural actions, such as scrolling, should be inhibited until the classification resolves

     * to another value or the event stream ends.

     */

    AMOTION_EVENT_CLASSIFICATION_AMBIGUOUS_GESTURE = 1,

    /**

     * Classification constant: Deep press.

     *

     * The current event stream represents the user intentionally pressing harder on the screen.

     * This classification type should be used to accelerate the long press behaviour.

     */

    AMOTION_EVENT_CLASSIFICATION_DEEP_PRESS = 2,

};



/**

 * Input source masks.

 *
@@ -1326,6 +1353,23 @@ float AMotionEvent_getHistoricalOrientation(const AInputEvent* motion_event, siz 
float AMotionEvent_getHistoricalAxisValue(const AInputEvent* motion_event,

        int32_t axis, size_t pointer_index, size_t history_index);



/**

 * Get the action button for the motion event. Returns a valid action button when the

 * event is associated with a button press or button release action. For other actions

 * the return value is undefined.

 */

int32_t AMotionEvent_getActionButton(const AInputEvent* motion_event);



/**

 * Returns the classification for the current gesture.

 * The classification may change as more events become available for the same gesture.

 *

 * @see #AMOTION_EVENT_CLASSIFICATION_NONE

 * @see #AMOTION_EVENT_CLASSIFICATION_AMBIGUOUS_GESTURE

 * @see #AMOTION_EVENT_CLASSIFICATION_DEEP_PRESS

*/

int32_t AMotionEvent_getClassification(const AInputEvent* motion_event);



/**

 * Creates a native AInputEvent* object that is a copy of the specified Java

 * android.view.MotionEvent. The result may be used with generic and MotionEvent-specific

include/input/Input.h

+3 −5
Original line number Diff line number Diff line
@@ -275,23 +275,21 @@ enum { 


/**

 * Classifications of the current gesture, if available.

 *

 * The following values must be kept in sync with MotionEvent.java

 */

enum class MotionClassification : uint8_t {

    /**

     * No classification is available.

     */

    NONE = 0,

    NONE = AMOTION_EVENT_CLASSIFICATION_NONE,

    /**

     * Too early to classify the current gesture. Need more events. Look for changes in the

     * upcoming motion events.

     */

    AMBIGUOUS_GESTURE = 1,

    AMBIGUOUS_GESTURE = AMOTION_EVENT_CLASSIFICATION_AMBIGUOUS_GESTURE,

    /**

     * The current gesture likely represents a user intentionally exerting force on the touchscreen.

     */

    DEEP_PRESS = 2,

    DEEP_PRESS = AMOTION_EVENT_CLASSIFICATION_DEEP_PRESS,

};



/**