Merge remote-tracking branch 'origin/master'
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commit
860503d276
1 changed files with 12 additions and 1 deletions
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@ -32,8 +32,10 @@ public class DoubleTapScaleDetector {
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private MotionEvent firstDown;
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private MotionEvent firstUp;
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private MotionEvent secondDown;
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private int mTouchSlopSquare;
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private int mDoubleTapSlopSquare;
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private boolean mIsDoubleTapping;
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private boolean mScrolling;
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public DoubleTapScaleDetector(Activity ctx, DoubleTapZoomListener listener) {
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this.ctx = ctx;
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@ -49,6 +51,8 @@ public class DoubleTapScaleDetector {
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centerScreen = new PointF(defaultDisplay.getWidth() / 2, defaultDisplay.getHeight() / 2);
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}
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final ViewConfiguration configuration = ViewConfiguration.get(ctx);
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int touchSlop = configuration.getScaledTouchSlop();
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mTouchSlopSquare = touchSlop * touchSlop;
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int doubleTapSlop = (int) (configuration.getScaledDoubleTapSlop() * 0.5);
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mDoubleTapSlopSquare = doubleTapSlop * doubleTapSlop;
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}
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@ -57,6 +61,7 @@ public class DoubleTapScaleDetector {
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if (event.getPointerCount() != 1) {
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resetEvents();
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mIsDoubleTapping = false;
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mScrolling = false;
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return false;
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}
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if (event.getAction() == MotionEvent.ACTION_UP) {
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@ -71,14 +76,17 @@ public class DoubleTapScaleDetector {
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listener.onDoubleTap(event);
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}
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handled = true;
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} else {
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} else if (!mScrolling) {
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firstUp = MotionEvent.obtain(event);
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} else {
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resetEvents();
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}
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if (handled) {
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resetEvents();
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}
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mIsDoubleTapping = false;
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mScrolling = false;
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return handled;
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} else {
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if (event.getAction() == MotionEvent.ACTION_DOWN && !mIsInZoomMode) {
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@ -94,6 +102,9 @@ public class DoubleTapScaleDetector {
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firstDown = MotionEvent.obtain(event);
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}
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} else if (event.getAction() == MotionEvent.ACTION_MOVE) {
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if (!mScrolling && secondDown == null && firstDown != null) {
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mScrolling = calculateSqaredDistance(firstDown, event) > mTouchSlopSquare;
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}
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if (isConfirmedScale(secondDown, event)) {
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mIsInZoomMode = true;
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}
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