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-rw-r--r--core/java/com/android/internal/widget/PointerLocationView.java29
1 files changed, 21 insertions, 8 deletions
diff --git a/core/java/com/android/internal/widget/PointerLocationView.java b/core/java/com/android/internal/widget/PointerLocationView.java
index 939f118..12cf853 100644
--- a/core/java/com/android/internal/widget/PointerLocationView.java
+++ b/core/java/com/android/internal/widget/PointerLocationView.java
@@ -84,6 +84,7 @@ public class PointerLocationView extends View {
private boolean mCurDown;
private int mCurNumPointers;
private int mMaxNumPointers;
+ private int mActivePointerId;
private final ArrayList<PointerState> mPointers = new ArrayList<PointerState>();
private final VelocityTracker mVelocity;
@@ -123,6 +124,7 @@ public class PointerLocationView extends View {
PointerState ps = new PointerState();
mPointers.add(ps);
+ mActivePointerId = 0;
mVelocity = VelocityTracker.obtain();
@@ -183,14 +185,15 @@ public class PointerLocationView extends View {
final int NP = mPointers.size();
// Labels
- if (NP > 0) {
- final PointerState ps = mPointers.get(0);
+ if (mActivePointerId >= 0) {
+ final PointerState ps = mPointers.get(mActivePointerId);
+
canvas.drawRect(0, 0, itemW-1, bottom,mTextBackgroundPaint);
canvas.drawText(mText.clear()
.append("P: ").append(mCurNumPointers)
.append(" / ").append(mMaxNumPointers)
.toString(), 1, base, mTextPaint);
-
+
final int N = ps.mTraceCount;
if ((mCurDown && ps.mCurDown) || N == 0) {
canvas.drawRect(itemW, 0, (itemW * 2) - 1, bottom, mTextBackgroundPaint);
@@ -355,6 +358,11 @@ public class PointerLocationView extends View {
NP++;
}
+ if (mActivePointerId < 0 ||
+ ! mPointers.get(mActivePointerId).mCurDown) {
+ mActivePointerId = id;
+ }
+
final PointerState ps = mPointers.get(id);
ps.mCurDown = true;
if (mPrintCoords) {
@@ -396,6 +404,7 @@ public class PointerLocationView extends View {
}
if (action == MotionEvent.ACTION_UP
+ || action == MotionEvent.ACTION_CANCEL
|| (action & MotionEvent.ACTION_MASK) == MotionEvent.ACTION_POINTER_UP) {
final int index = (action & MotionEvent.ACTION_POINTER_INDEX_MASK)
>> MotionEvent.ACTION_POINTER_INDEX_SHIFT; // will be 0 for UP
@@ -407,10 +416,14 @@ public class PointerLocationView extends View {
Log.i(TAG, mText.clear().append("Pointer ")
.append(id + 1).append(": UP").toString());
}
-
- if (action == MotionEvent.ACTION_UP) {
+
+ if (action == MotionEvent.ACTION_UP
+ || action == MotionEvent.ACTION_CANCEL) {
mCurDown = false;
} else {
+ if (mActivePointerId == id) {
+ mActivePointerId = event.getPointerId(index == 0 ? 1 : 0);
+ }
ps.addTrace(Float.NaN, Float.NaN);
}
}
@@ -438,9 +451,9 @@ public class PointerLocationView extends View {
// HACK
// A quick and dirty string builder implementation optimized for GC.
- // Using the basic StringBuilder implementation causes the application grind to a halt when
- // more than a couple of pointers are down due to the number of temporary objects allocated
- // while formatting strings for drawing or logging.
+ // Using String.format causes the application grind to a halt when
+ // more than a couple of pointers are down due to the number of
+ // temporary objects allocated while formatting strings for drawing or logging.
private static final class FasterStringBuilder {
private char[] mChars;
private int mLength;