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Commit 4815f2a6 authored by Jeff Brown's avatar Jeff Brown
Browse files

Initial checkin of spot presentation for touchpad gestures. 

Added a new PointerIcon API (hidden for now) for loading
pointer icons.

Fixed a starvation problem in the native Looper's sendMessage
implementation which caused new messages to be posted ahead
of old messages sent with sendMessageDelayed.

Redesigned the touch pad gestures to be defined in terms of
more fluid finger / spot movements.  The objective is to reinforce
the natural mapping between fingers and spots which means there
must not be any discontinuities in spot motion relative to
the fingers.

Removed the SpotController stub and folded its responsibilities
into PointerController.

Change-Id: I5126b1e69d95252fda7f2a684c9287e239a57163
parent a01b1ff6

include/ui/Input.h

+5 −0
Original line number Diff line number Diff line
@@ -620,6 +620,11 @@ private: 
    // Oldest sample to consider when calculating the velocity.

    static const nsecs_t MAX_AGE = 200 * 1000000; // 200 ms



    // When the total duration of the window of samples being averaged is less

    // than the window size, the resulting velocity is scaled to reduce the impact

    // of overestimation in short traces.

    static const nsecs_t MIN_WINDOW = 100 * 1000000; // 100 ms



    // The minimum duration between samples when estimating velocity.

    static const nsecs_t MIN_DURATION = 10 * 1000000; // 10 ms

libs/ui/Input.cpp

+9 −0
Original line number Diff line number Diff line
@@ -832,6 +832,7 @@ bool VelocityTracker::getVelocity(uint32_t id, float* outVx, float* outVy) const 
        const Position& oldestPosition =

                oldestMovement.positions[oldestMovement.idBits.getIndexOfBit(id)];

        nsecs_t lastDuration = 0;



        while (numTouches-- > 1) {

            if (++index == HISTORY_SIZE) {

                index = 0;
@@ -858,6 +859,14 @@ bool VelocityTracker::getVelocity(uint32_t id, float* outVx, float* outVy) const 


        // Make sure we used at least one sample.

        if (samplesUsed != 0) {

            // Scale the velocity linearly if the window of samples is small.

            nsecs_t totalDuration = newestMovement.eventTime - oldestMovement.eventTime;

            if (totalDuration < MIN_WINDOW) {

                float scale = float(totalDuration) / float(MIN_WINDOW);

                accumVx *= scale;

                accumVy *= scale;

            }



            *outVx = accumVx;

            *outVy = accumVy;

            return true;

libs/utils/Looper.cpp

+2 −1
Original line number Diff line number Diff line
@@ -662,7 +662,8 @@ void Looper::wakeAndLock() { 
#endif



void Looper::sendMessage(const sp<MessageHandler>& handler, const Message& message) {

    sendMessageAtTime(LLONG_MIN, handler, message);

    nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);

    sendMessageAtTime(now, handler, message);

}



void Looper::sendMessageDelayed(nsecs_t uptimeDelay, const sp<MessageHandler>& handler,