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Fix double tap scale

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This commit is contained in:
Alexey Kulish 2016-07-03 15:16:06 +03:00
parent f6f25e6c9f
commit e48e32440a
1 changed files with 12 additions and 1 deletions
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13
OsmAnd/src/net/osmand/plus/views/DoubleTapScaleDetector.java
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@ -32,8 +32,10 @@ public class DoubleTapScaleDetector {
private MotionEvent firstDown;
private MotionEvent firstUp;
private MotionEvent secondDown;
private int mTouchSlopSquare;
private int mDoubleTapSlopSquare;
private boolean mIsDoubleTapping;
private boolean mScrolling;
public DoubleTapScaleDetector(Activity ctx, DoubleTapZoomListener listener) {
this.ctx = ctx;
@ -49,6 +51,8 @@ public class DoubleTapScaleDetector {
centerScreen = new PointF(defaultDisplay.getWidth() / 2, defaultDisplay.getHeight() / 2);
}
final ViewConfiguration configuration = ViewConfiguration.get(ctx);
int touchSlop = configuration.getScaledTouchSlop();
mTouchSlopSquare = touchSlop * touchSlop;
int doubleTapSlop = (int) (configuration.getScaledDoubleTapSlop() * 0.5);
mDoubleTapSlopSquare = doubleTapSlop * doubleTapSlop;
}
@ -57,6 +61,7 @@ public class DoubleTapScaleDetector {
if (event.getPointerCount() != 1) {
resetEvents();
mIsDoubleTapping = false;
mScrolling = false;
return false;
}
if (event.getAction() == MotionEvent.ACTION_UP) {
@ -71,14 +76,17 @@ public class DoubleTapScaleDetector {
listener.onDoubleTap(event);
}
handled = true;
} else {
} else if (!mScrolling) {
firstUp = MotionEvent.obtain(event);
} else {
resetEvents();
}
if (handled) {
resetEvents();
}
mIsDoubleTapping = false;
mScrolling = false;
return handled;
} else {
if (event.getAction() == MotionEvent.ACTION_DOWN && !mIsInZoomMode) {
@ -94,6 +102,9 @@ public class DoubleTapScaleDetector {
firstDown = MotionEvent.obtain(event);
}
} else if (event.getAction() == MotionEvent.ACTION_MOVE) {
if (!mScrolling && secondDown == null && firstDown != null) {
mScrolling = calculateSqaredDistance(firstDown, event) > mTouchSlopSquare;
}
if (isConfirmedScale(secondDown, event)) {
mIsInZoomMode = true;
}