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package com.sun.glass.ui.monocle;


A TouchFilter processes and modifies TouchStates before sending touch events

/**
 * A TouchFilter processes and modifies TouchStates before sending touch events
 */
interface TouchFilter {

    
The priority value of a filter that is applied before IDs are assigned to
points

/**
     * The priority value of a filter that is applied before IDs are assigned to
     * points
     */
    static final int PRIORITY_PRE_ID = 100;

    
The priority value of the filter that applies IDs to points

/**
     * The priority value of the filter that applies IDs to points
     */
    static final int PRIORITY_ID = 0;

    
The priority value of a filter that is applied after IDs are assigned to
points

/**
     * The priority value of a filter that is applied after IDs are assigned to
     * points
     */
    static final int PRIORITY_POST_ID = -100;

    
Filters a touch state

Params:
  • state – The new state to be filtered or modified
Returns:true if the state is consumed, in which case no further
processing will be done on this touch state and no events will be sent.
/**
     * Filters a touch state
     *
     * @param state The new state to be filtered or modified
     * @return true if the state is consumed, in which case no further
     * processing will be done on this touch state and no events will be sent.
     */
    boolean filter(TouchState state);

    
Flushes this filter's state. If this filter wants to send any additional
events it should fill in the provided state object.

Params:
  • state – a TouchState object to be filled in by the filter
Returns:true if the filter put data into the state
/**
     * Flushes this filter's state. If this filter wants to send any additional
     * events it should fill in the provided state object.
     *
     * @param state a TouchState object to be filled in by the filter
     * @return true if the filter put data into the state
     */
    boolean flush(TouchState state);

    
Gets the priority of this touch filter. Touch filters are applied in
order, sorting first by their priority and then by the order in which
they were requested. Higher priority numbers are applied first.

/**
     * Gets the priority of this touch filter. Touch filters are applied in
     * order, sorting first by their priority and then by the order in which
     * they were requested. Higher priority numbers are applied first.
     */
    int getPriority();

}