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am a53d38bc: Merge "Drop simultaneous pointer events when tracking velocity." into klp-dev

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* commit 'a53d38bc286ee35ab77843ad5b4c6b2fb9e81ac5':
  Drop simultaneous pointer events when tracking velocity.
This commit is contained in:
Daniel Sandler
2013-08-13 19:41:59 -07:00
committed by Android Git Automerger
parent 217f37cecc a53d38bc28
commit 7b9173b6f0
1 changed files with 16 additions and 7 deletions
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23
packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
View File

@@ -118,7 +118,7 @@ public class PanelView extends FrameLayout {
int i = 0;
float totalweight = 0f;
float weight = 10f;
for (final Iterator<MotionEventCopy> iter = mEventBuf.descendingIterator();
for (final Iterator<MotionEventCopy> iter = mEventBuf.iterator();
iter.hasNext();) {
final MotionEventCopy event = iter.next();
if (last != null) {
@@ -126,13 +126,22 @@ public class PanelView extends FrameLayout {
final float dx = (event.x - last.x);
final float dy = (event.y - last.y);
if (FlingTracker.DEBUG) {
Log.v("FlingTracker", String.format(" [%d] dx=%.1f dy=%.1f dt=%.0f vx=%.1f vy=%.1f",
i,
Log.v("FlingTracker", String.format(
" [%d] (t=%d %.1f,%.1f) dx=%.1f dy=%.1f dt=%f vx=%.1f vy=%.1f",
i, event.t, event.x, event.y,
dx, dy, dt,
(dx/dt),
(dy/dt)
));
}
if (event.t == last.t) {
// Really not sure what to do with events that happened at the same time,
// so we'll skip subsequent events.
if (DEBUG_NAN) {
Log.v("FlingTracker", "skipping simultaneous event at t=" + event.t);
}
continue;
}
mVX += weight * dx / dt;
mVY += weight * dy / dt;
totalweight += weight;
@@ -158,18 +167,18 @@ public class PanelView extends FrameLayout {
}
}
public float getXVelocity() {
if (Float.isNaN(mVX)) {
if (Float.isNaN(mVX) || Float.isInfinite(mVX)) {
if (DEBUG_NAN) {
Log.v("FlingTracker", "warning: vx=NaN");
Log.v("FlingTracker", "warning: vx=" + mVX);
}
mVX = 0;
}
return mVX;
}
public float getYVelocity() {
if (Float.isNaN(mVY)) {
if (Float.isNaN(mVY) || Float.isInfinite(mVX)) {
if (DEBUG_NAN) {
Log.v("FlingTracker", "warning: vx=NaN");
Log.v("FlingTracker", "warning: vx=" + mVY);
}
mVY = 0;
}