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Bug 765069 - Swipe tabs off screen at the velocity they were swiped. r=mbrubeck

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This commit is contained in:
Wes Johnston 2012-06-14 16:50:58 -07:00
parent cd42f92c87
commit 2abcb61003
1 changed files with 11 additions and 2 deletions
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13
mobile/android/base/TabsTray.java
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@ -43,7 +43,9 @@ public class TabsTray extends LinearLayout
private GestureDetector mGestureDetector;
private TabSwipeGestureListener mListener;
private static final int SWIPE_CLOSE_VELOCITY = 1000;
// Minimum velocity swipe that will close a tab, in inches/sec
private static final int SWIPE_CLOSE_VELOCITY = 5;
// Time to animate non-flicked tabs of screen, in milliseconds
private static final int MAX_ANIMATION_TIME = 250;
private static enum DragDirection {
UNKNOWN,
@ -282,6 +284,9 @@ public class TabsTray extends LinearLayout
tabs.closeTab(tab);
}
});
} else if (x != 0 && mWaitingForClose) {
// if this asked us to close, but we were already doing it just bail out
return;
}
pa.start();
}
@ -371,9 +376,13 @@ public class TabsTray extends LinearLayout
if (mView == null || Tabs.getInstance().getCount() == 1)
return false;
// velocityX is in pixels/sec. divide by pixels/inch to compare it with swipe velocity
if (Math.abs(velocityX)/GeckoAppShell.getDpi() > SWIPE_CLOSE_VELOCITY) {
// is this is a swipe, we want to continue the row moving at the swipe velocity
float d = (velocityX > 0 ? 1 : -1) * mView.getWidth();
animateTo(mView, (int)d, (int)(d/velocityX));
// convert the velocity (px/sec) to ms by taking the distance
// multiply by 1000 to convert seconds to milliseconds
animateTo(mView, (int)d, (int)((d + mView.getScrollX())*1000/velocityX));
}
return false;