1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.launcher3.uioverrides; 17 18 import android.content.Context; 19 import android.content.res.Resources; 20 import android.graphics.Rect; 21 22 import com.android.launcher3.DeviceProfile; 23 import com.android.launcher3.Launcher; 24 import com.android.launcher3.R; 25 import com.android.quickstep.QuickScrubController; 26 import com.android.quickstep.views.RecentsView; 27 28 /** 29 * Extension of overview state used for QuickScrub 30 */ 31 public class FastOverviewState extends OverviewState { 32 33 private static final float MAX_PREVIEW_SCALE_UP = 1.3f; 34 /** 35 * Vertical transition of the task previews relative to the full container. 36 */ 37 public static final float OVERVIEW_TRANSLATION_FACTOR = 0.4f; 38 39 private static final int STATE_FLAGS = FLAG_DISABLE_RESTORE | FLAG_DISABLE_INTERACTION 40 | FLAG_OVERVIEW_UI | FLAG_HIDE_BACK_BUTTON | FLAG_DISABLE_ACCESSIBILITY; 41 FastOverviewState(int id)42 public FastOverviewState(int id) { 43 super(id, QuickScrubController.QUICK_SCRUB_FROM_HOME_START_DURATION, STATE_FLAGS); 44 } 45 46 @Override onStateTransitionEnd(Launcher launcher)47 public void onStateTransitionEnd(Launcher launcher) { 48 super.onStateTransitionEnd(launcher); 49 RecentsView recentsView = launcher.getOverviewPanel(); 50 recentsView.getQuickScrubController().onFinishedTransitionToQuickScrub(); 51 } 52 53 @Override getVisibleElements(Launcher launcher)54 public int getVisibleElements(Launcher launcher) { 55 return NONE; 56 } 57 58 @Override getOverviewScaleAndTranslationYFactor(Launcher launcher)59 public float[] getOverviewScaleAndTranslationYFactor(Launcher launcher) { 60 RecentsView recentsView = launcher.getOverviewPanel(); 61 recentsView.getTaskSize(sTempRect); 62 63 return new float[] {getOverviewScale(launcher.getDeviceProfile(), sTempRect, launcher), 64 OVERVIEW_TRANSLATION_FACTOR}; 65 } 66 getOverviewScale(DeviceProfile dp, Rect taskRect, Context context)67 public static float getOverviewScale(DeviceProfile dp, Rect taskRect, Context context) { 68 if (dp.isVerticalBarLayout()) { 69 return 1f; 70 } 71 72 Resources res = context.getResources(); 73 float usedHeight = taskRect.height() + res.getDimension(R.dimen.task_thumbnail_top_margin); 74 float usedWidth = taskRect.width() + 2 * (res.getDimension(R.dimen.recents_page_spacing) 75 + res.getDimension(R.dimen.quickscrub_adjacent_visible_width)); 76 return Math.min(Math.min(dp.availableHeightPx / usedHeight, 77 dp.availableWidthPx / usedWidth), MAX_PREVIEW_SCALE_UP); 78 } 79 80 @Override onStateDisabled(Launcher launcher)81 public void onStateDisabled(Launcher launcher) { 82 super.onStateDisabled(launcher); 83 launcher.<RecentsView>getOverviewPanel().getQuickScrubController().cancelActiveQuickscrub(); 84 } 85 } 86