| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.systemui.statusbar.phone; |
| |
| /** |
| * Panel and QS expansion callbacks. |
| */ |
| public interface PanelExpansionListener { |
| /** |
| * Invoked whenever the notification panel expansion changes, at every animation frame. |
| * This is the main expansion that happens when the user is swiping up to dismiss the |
| * lock screen. |
| * |
| * @param expansion 0 when collapsed, 1 when expanded. |
| * @param tracking {@code true} when the user is actively dragging the panel. |
| */ |
| void onPanelExpansionChanged(float expansion, boolean tracking); |
| |
| /** |
| * Invoked whenever the QS expansion changes, at every animation frame. |
| * @param expansion 0 when collapsed, 1 when expanded. |
| */ |
| default void onQsExpansionChanged(float expansion) {}; |
| } |