mozilla-mobile/reference-browser/app/src/main/java/org/mozilla/reference/browser/tabs/TabsTouchHelper.kt

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.reference.browser.tabs
import androidx.recyclerview.widget.ItemTouchHelper
import mozilla.components.browser.state.state.TabSessionState
import mozilla.components.browser.tabstray.TabTouchCallback
import kotlin.math.abs
class TabsTouchHelper(observable: (TabSessionState) -> Unit) :
ItemTouchHelper(object : TabTouchCallback(observable) {
override fun alphaForItemSwipe(dX: Float, distanceToAlphaMin: Int): Float {
return 1f - 2f * abs(dX) / distanceToAlphaMin
}
})