Jon Miranda
f9e8626fd0
The shadow from the top of the Folder is visible through the transparent part of the 'preview' background. When we remove the elevation as part of the animation, the shadow jumps into visibility when the animation is done. To solve this, we remove the elevation during the Folder animation and * Animate the elevation at the end of the Folder opening animation. * Animate the shadow of the FolderIcon bg in once the Folder is closed. Bug: 62787582 Bug: 35064148 Change-Id: Id5d8fcbfa4f74882531334f12488560da2496faf
1303 lines
49 KiB
Java
1303 lines
49 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.folder;
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import android.animation.Animator;
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import android.animation.AnimatorListenerAdapter;
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import android.animation.ObjectAnimator;
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import android.animation.ValueAnimator;
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import android.animation.ValueAnimator.AnimatorUpdateListener;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.Matrix;
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import android.graphics.Paint;
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import android.graphics.Path;
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import android.graphics.Point;
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import android.graphics.PorterDuff;
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import android.graphics.PorterDuffXfermode;
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import android.graphics.RadialGradient;
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import android.graphics.Rect;
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import android.graphics.Region;
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import android.graphics.Shader;
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import android.graphics.drawable.Drawable;
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import android.os.Parcelable;
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import android.support.v4.graphics.ColorUtils;
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import android.util.AttributeSet;
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import android.util.Property;
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import android.view.LayoutInflater;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.ViewConfiguration;
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import android.view.ViewGroup;
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import android.view.animation.AccelerateInterpolator;
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import android.view.animation.DecelerateInterpolator;
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import android.widget.FrameLayout;
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import android.widget.TextView;
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import com.android.launcher3.Alarm;
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import com.android.launcher3.AppInfo;
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import com.android.launcher3.BubbleTextView;
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import com.android.launcher3.CellLayout;
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import com.android.launcher3.CheckLongPressHelper;
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import com.android.launcher3.DeviceProfile;
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import com.android.launcher3.DropTarget.DragObject;
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import com.android.launcher3.FastBitmapDrawable;
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import com.android.launcher3.FolderInfo;
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import com.android.launcher3.FolderInfo.FolderListener;
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import com.android.launcher3.ItemInfo;
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import com.android.launcher3.Launcher;
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import com.android.launcher3.LauncherAnimUtils;
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import com.android.launcher3.LauncherSettings;
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import com.android.launcher3.OnAlarmListener;
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import com.android.launcher3.R;
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import com.android.launcher3.ShortcutInfo;
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import com.android.launcher3.SimpleOnStylusPressListener;
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import com.android.launcher3.StylusEventHelper;
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import com.android.launcher3.Utilities;
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import com.android.launcher3.Workspace;
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import com.android.launcher3.badge.BadgeRenderer;
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import com.android.launcher3.badge.FolderBadgeInfo;
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import com.android.launcher3.config.FeatureFlags;
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import com.android.launcher3.dragndrop.DragLayer;
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import com.android.launcher3.dragndrop.DragView;
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import com.android.launcher3.util.Themes;
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import com.android.launcher3.graphics.IconPalette;
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import com.android.launcher3.util.Thunk;
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import com.android.launcher3.widget.PendingAddShortcutInfo;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* An icon that can appear on in the workspace representing an {@link Folder}.
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*/
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public class FolderIcon extends FrameLayout implements FolderListener {
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@Thunk Launcher mLauncher;
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@Thunk Folder mFolder;
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private FolderInfo mInfo;
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@Thunk static boolean sStaticValuesDirty = true;
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public static final int NUM_ITEMS_IN_PREVIEW = FeatureFlags.LAUNCHER3_LEGACY_FOLDER_ICON ?
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StackFolderIconLayoutRule.MAX_NUM_ITEMS_IN_PREVIEW :
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ClippedFolderIconLayoutRule.MAX_NUM_ITEMS_IN_PREVIEW;
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private CheckLongPressHelper mLongPressHelper;
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private StylusEventHelper mStylusEventHelper;
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// The number of icons to display in the
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private static final int CONSUMPTION_ANIMATION_DURATION = 100;
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private static final int DROP_IN_ANIMATION_DURATION = 400;
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private static final int INITIAL_ITEM_ANIMATION_DURATION = 350;
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private static final int FINAL_ITEM_ANIMATION_DURATION = 200;
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// Flag whether the folder should open itself when an item is dragged over is enabled.
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public static final boolean SPRING_LOADING_ENABLED = true;
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// Delay when drag enters until the folder opens, in miliseconds.
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private static final int ON_OPEN_DELAY = 800;
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@Thunk BubbleTextView mFolderName;
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// These variables are all associated with the drawing of the preview; they are stored
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// as member variables for shared usage and to avoid computation on each frame
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private int mIntrinsicIconSize = -1;
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private int mTotalWidth = -1;
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private int mPrevTopPadding = -1;
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PreviewBackground mBackground = new PreviewBackground();
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private boolean mBackgroundIsVisible = true;
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private PreviewLayoutRule mPreviewLayoutRule;
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boolean mAnimating = false;
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private Rect mTempBounds = new Rect();
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private float mSlop;
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FolderIconPreviewVerifier mPreviewVerifier;
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private PreviewItemDrawingParams mTmpParams = new PreviewItemDrawingParams(0, 0, 0, 0);
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private ArrayList<PreviewItemDrawingParams> mDrawingParams = new ArrayList<PreviewItemDrawingParams>();
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private Drawable mReferenceDrawable = null;
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private Alarm mOpenAlarm = new Alarm();
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private FolderBadgeInfo mBadgeInfo = new FolderBadgeInfo();
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private BadgeRenderer mBadgeRenderer;
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private float mBadgeScale;
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private Point mTempSpaceForBadgeOffset = new Point();
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private static final Property<FolderIcon, Float> BADGE_SCALE_PROPERTY
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= new Property<FolderIcon, Float>(Float.TYPE, "badgeScale") {
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@Override
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public Float get(FolderIcon folderIcon) {
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return folderIcon.mBadgeScale;
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}
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@Override
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public void set(FolderIcon folderIcon, Float value) {
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folderIcon.mBadgeScale = value;
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folderIcon.invalidate();
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}
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};
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public FolderIcon(Context context, AttributeSet attrs) {
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super(context, attrs);
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init();
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}
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public FolderIcon(Context context) {
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super(context);
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init();
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}
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private void init() {
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mLongPressHelper = new CheckLongPressHelper(this);
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mStylusEventHelper = new StylusEventHelper(new SimpleOnStylusPressListener(this), this);
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mPreviewLayoutRule = FeatureFlags.LAUNCHER3_LEGACY_FOLDER_ICON ?
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new StackFolderIconLayoutRule() :
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new ClippedFolderIconLayoutRule();
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mSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
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}
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public static FolderIcon fromXml(int resId, Launcher launcher, ViewGroup group,
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FolderInfo folderInfo) {
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@SuppressWarnings("all") // suppress dead code warning
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final boolean error = INITIAL_ITEM_ANIMATION_DURATION >= DROP_IN_ANIMATION_DURATION;
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if (error) {
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throw new IllegalStateException("DROP_IN_ANIMATION_DURATION must be greater than " +
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"INITIAL_ITEM_ANIMATION_DURATION, as sequencing of adding first two items " +
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"is dependent on this");
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}
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DeviceProfile grid = launcher.getDeviceProfile();
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FolderIcon icon = (FolderIcon) LayoutInflater.from(group.getContext())
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.inflate(resId, group, false);
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icon.setClipToPadding(false);
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icon.mFolderName = (BubbleTextView) icon.findViewById(R.id.folder_icon_name);
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icon.mFolderName.setText(folderInfo.title);
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icon.mFolderName.setCompoundDrawablePadding(0);
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FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) icon.mFolderName.getLayoutParams();
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lp.topMargin = grid.iconSizePx + grid.iconDrawablePaddingPx;
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icon.setTag(folderInfo);
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icon.setOnClickListener(launcher);
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icon.mInfo = folderInfo;
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icon.mLauncher = launcher;
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icon.mBadgeRenderer = launcher.getDeviceProfile().mBadgeRenderer;
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icon.setContentDescription(launcher.getString(R.string.folder_name_format, folderInfo.title));
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Folder folder = Folder.fromXml(launcher);
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folder.setDragController(launcher.getDragController());
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folder.setFolderIcon(icon);
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folder.bind(folderInfo);
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icon.setFolder(folder);
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icon.setAccessibilityDelegate(launcher.getAccessibilityDelegate());
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folderInfo.addListener(icon);
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icon.setOnFocusChangeListener(launcher.mFocusHandler);
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return icon;
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}
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@Override
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protected Parcelable onSaveInstanceState() {
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sStaticValuesDirty = true;
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return super.onSaveInstanceState();
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}
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public Folder getFolder() {
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return mFolder;
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}
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private void setFolder(Folder folder) {
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mFolder = folder;
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mPreviewVerifier = new FolderIconPreviewVerifier(mLauncher.getDeviceProfile().inv);
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updateItemDrawingParams(false);
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}
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private boolean willAcceptItem(ItemInfo item) {
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final int itemType = item.itemType;
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return ((itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION ||
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itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT ||
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itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) &&
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!mFolder.isFull() && item != mInfo && !mFolder.isOpen());
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}
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public boolean acceptDrop(ItemInfo dragInfo) {
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final ItemInfo item = dragInfo;
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return !mFolder.isDestroyed() && willAcceptItem(item);
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}
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public void addItem(ShortcutInfo item) {
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mInfo.add(item, true);
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}
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public void onDragEnter(ItemInfo dragInfo) {
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if (mFolder.isDestroyed() || !willAcceptItem(dragInfo)) return;
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CellLayout.LayoutParams lp = (CellLayout.LayoutParams) getLayoutParams();
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CellLayout cl = (CellLayout) getParent().getParent();
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mBackground.animateToAccept(cl, lp.cellX, lp.cellY);
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mOpenAlarm.setOnAlarmListener(mOnOpenListener);
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if (SPRING_LOADING_ENABLED &&
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((dragInfo instanceof AppInfo)
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|| (dragInfo instanceof ShortcutInfo)
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|| (dragInfo instanceof PendingAddShortcutInfo))) {
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mOpenAlarm.setAlarm(ON_OPEN_DELAY);
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}
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}
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OnAlarmListener mOnOpenListener = new OnAlarmListener() {
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public void onAlarm(Alarm alarm) {
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mFolder.beginExternalDrag();
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mFolder.animateOpen();
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}
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};
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public Drawable prepareCreate(final View destView) {
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Drawable animateDrawable = ((TextView) destView).getCompoundDrawables()[1];
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computePreviewDrawingParams(animateDrawable.getIntrinsicWidth(),
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destView.getMeasuredWidth());
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return animateDrawable;
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}
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public void performCreateAnimation(final ShortcutInfo destInfo, final View destView,
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final ShortcutInfo srcInfo, final DragView srcView, Rect dstRect,
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float scaleRelativeToDragLayer, Runnable postAnimationRunnable) {
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// These correspond two the drawable and view that the icon was dropped _onto_
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Drawable animateDrawable = prepareCreate(destView);
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mReferenceDrawable = animateDrawable;
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addItem(destInfo);
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// This will animate the first item from it's position as an icon into its
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// position as the first item in the preview
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animateFirstItem(animateDrawable, INITIAL_ITEM_ANIMATION_DURATION, false, null);
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// This will animate the dragView (srcView) into the new folder
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onDrop(srcInfo, srcView, dstRect, scaleRelativeToDragLayer, 1, postAnimationRunnable);
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}
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public void performDestroyAnimation(final View finalView, Runnable onCompleteRunnable) {
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Drawable animateDrawable = ((TextView) finalView).getCompoundDrawables()[1];
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computePreviewDrawingParams(animateDrawable.getIntrinsicWidth(),
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finalView.getMeasuredWidth());
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// This will animate the first item from it's position as an icon into its
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// position as the first item in the preview
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animateFirstItem(animateDrawable, FINAL_ITEM_ANIMATION_DURATION, true,
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onCompleteRunnable);
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}
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public void onDragExit() {
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mBackground.animateToRest();
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mOpenAlarm.cancelAlarm();
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}
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private void onDrop(final ShortcutInfo item, DragView animateView, Rect finalRect,
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float scaleRelativeToDragLayer, int index, Runnable postAnimationRunnable) {
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item.cellX = -1;
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item.cellY = -1;
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// Typically, the animateView corresponds to the DragView; however, if this is being done
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// after a configuration activity (ie. for a Shortcut being dragged from AllApps) we
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// will not have a view to animate
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if (animateView != null) {
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DragLayer dragLayer = mLauncher.getDragLayer();
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Rect from = new Rect();
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dragLayer.getViewRectRelativeToSelf(animateView, from);
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Rect to = finalRect;
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if (to == null) {
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to = new Rect();
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Workspace workspace = mLauncher.getWorkspace();
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// Set cellLayout and this to it's final state to compute final animation locations
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workspace.setFinalTransitionTransform((CellLayout) getParent().getParent());
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float scaleX = getScaleX();
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float scaleY = getScaleY();
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setScaleX(1.0f);
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setScaleY(1.0f);
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scaleRelativeToDragLayer = dragLayer.getDescendantRectRelativeToSelf(this, to);
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// Finished computing final animation locations, restore current state
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setScaleX(scaleX);
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setScaleY(scaleY);
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workspace.resetTransitionTransform((CellLayout) getParent().getParent());
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}
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int[] center = new int[2];
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float scale = getLocalCenterForIndex(index, index + 1, center);
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center[0] = (int) Math.round(scaleRelativeToDragLayer * center[0]);
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center[1] = (int) Math.round(scaleRelativeToDragLayer * center[1]);
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to.offset(center[0] - animateView.getMeasuredWidth() / 2,
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center[1] - animateView.getMeasuredHeight() / 2);
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float finalAlpha = index < mPreviewLayoutRule.maxNumItems() ? 0.5f : 0f;
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float finalScale = scale * scaleRelativeToDragLayer;
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dragLayer.animateView(animateView, from, to, finalAlpha,
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1, 1, finalScale, finalScale, DROP_IN_ANIMATION_DURATION,
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new DecelerateInterpolator(2), new AccelerateInterpolator(2),
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postAnimationRunnable, DragLayer.ANIMATION_END_DISAPPEAR, null);
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addItem(item);
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mFolder.hideItem(item);
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final PreviewItemDrawingParams params = index < mDrawingParams.size() ?
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mDrawingParams.get(index) : null;
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if (params != null) params.hidden = true;
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postDelayed(new Runnable() {
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public void run() {
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if (params != null) params.hidden = false;
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mFolder.showItem(item);
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invalidate();
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}
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}, DROP_IN_ANIMATION_DURATION);
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} else {
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addItem(item);
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}
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}
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public void onDrop(DragObject d) {
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ShortcutInfo item;
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if (d.dragInfo instanceof AppInfo) {
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// Came from all apps -- make a copy
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item = ((AppInfo) d.dragInfo).makeShortcut();
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} else {
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item = (ShortcutInfo) d.dragInfo;
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}
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mFolder.notifyDrop();
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onDrop(item, d.dragView, null, 1.0f, mInfo.contents.size(), d.postAnimationRunnable);
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}
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private void computePreviewDrawingParams(int drawableSize, int totalSize) {
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if (mIntrinsicIconSize != drawableSize || mTotalWidth != totalSize ||
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mPrevTopPadding != getPaddingTop()) {
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mIntrinsicIconSize = drawableSize;
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mTotalWidth = totalSize;
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mPrevTopPadding = getPaddingTop();
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mBackground.setup(mLauncher, this, mTotalWidth, getPaddingTop());
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mPreviewLayoutRule.init(mBackground.previewSize, mIntrinsicIconSize,
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Utilities.isRtl(getResources()));
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updateItemDrawingParams(false);
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}
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}
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private void computePreviewDrawingParams(Drawable d) {
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computePreviewDrawingParams(d.getIntrinsicWidth(), getMeasuredWidth());
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}
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public void setBadgeInfo(FolderBadgeInfo badgeInfo) {
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updateBadgeScale(mBadgeInfo.hasBadge(), badgeInfo.hasBadge());
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mBadgeInfo = badgeInfo;
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}
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public PreviewLayoutRule getLayoutRule() {
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return mPreviewLayoutRule;
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}
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/**
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* Sets mBadgeScale to 1 or 0, animating if wasBadged or isBadged is false
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* (the badge is being added or removed).
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*/
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private void updateBadgeScale(boolean wasBadged, boolean isBadged) {
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float newBadgeScale = isBadged ? 1f : 0f;
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// Animate when a badge is first added or when it is removed.
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if ((wasBadged ^ isBadged) && isShown()) {
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createBadgeScaleAnimator(newBadgeScale).start();
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} else {
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mBadgeScale = newBadgeScale;
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invalidate();
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}
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}
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public Animator createBadgeScaleAnimator(float... badgeScales) {
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return ObjectAnimator.ofFloat(this, BADGE_SCALE_PROPERTY, badgeScales);
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}
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public boolean hasBadge() {
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return mBadgeInfo != null && mBadgeInfo.hasBadge();
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}
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static class PreviewItemDrawingParams {
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PreviewItemDrawingParams(float transX, float transY, float scale, float overlayAlpha) {
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this.transX = transX;
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this.transY = transY;
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this.scale = scale;
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this.overlayAlpha = overlayAlpha;
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}
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public void update(float transX, float transY, float scale) {
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// We ensure the update will not interfere with an animation on the layout params
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// If the final values differ, we cancel the animation.
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if (anim != null) {
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if (anim.finalTransX == transX || anim.finalTransY == transY
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|| anim.finalScale == scale) {
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return;
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}
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anim.cancel();
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}
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this.transX = transX;
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this.transY = transY;
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this.scale = scale;
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}
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float transX;
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float transY;
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float scale;
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public float overlayAlpha;
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boolean hidden;
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FolderPreviewItemAnim anim;
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Drawable drawable;
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}
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private float getLocalCenterForIndex(int index, int curNumItems, int[] center) {
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mTmpParams = computePreviewItemDrawingParams(
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Math.min(mPreviewLayoutRule.maxNumItems(), index), curNumItems, mTmpParams);
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|
mTmpParams.transX += mBackground.basePreviewOffsetX;
|
|
mTmpParams.transY += mBackground.basePreviewOffsetY;
|
|
float offsetX = mTmpParams.transX + (mTmpParams.scale * mIntrinsicIconSize) / 2;
|
|
float offsetY = mTmpParams.transY + (mTmpParams.scale * mIntrinsicIconSize) / 2;
|
|
|
|
center[0] = (int) Math.round(offsetX);
|
|
center[1] = (int) Math.round(offsetY);
|
|
return mTmpParams.scale;
|
|
}
|
|
|
|
private PreviewItemDrawingParams computePreviewItemDrawingParams(int index, int curNumItems,
|
|
PreviewItemDrawingParams params) {
|
|
// We use an index of -1 to represent an icon on the workspace for the destroy and
|
|
// create animations
|
|
if (index == -1) {
|
|
return getFinalIconParams(params);
|
|
}
|
|
return mPreviewLayoutRule.computePreviewItemDrawingParams(index, curNumItems, params);
|
|
}
|
|
|
|
private PreviewItemDrawingParams getFinalIconParams(PreviewItemDrawingParams params) {
|
|
float iconSize = mLauncher.getDeviceProfile().iconSizePx;
|
|
|
|
final float scale = iconSize / mReferenceDrawable.getIntrinsicWidth();
|
|
final float trans = (mBackground.previewSize - iconSize) / 2;
|
|
|
|
params.update(trans, trans, scale);
|
|
return params;
|
|
}
|
|
|
|
private void drawPreviewItem(Canvas canvas, PreviewItemDrawingParams params) {
|
|
canvas.save(Canvas.MATRIX_SAVE_FLAG);
|
|
canvas.translate(params.transX, params.transY);
|
|
canvas.scale(params.scale, params.scale);
|
|
Drawable d = params.drawable;
|
|
|
|
if (d != null) {
|
|
mTempBounds.set(d.getBounds());
|
|
d.setBounds(0, 0, mIntrinsicIconSize, mIntrinsicIconSize);
|
|
if (d instanceof FastBitmapDrawable) {
|
|
FastBitmapDrawable fd = (FastBitmapDrawable) d;
|
|
fd.drawWithBrightness(canvas, params.overlayAlpha);
|
|
} else {
|
|
d.setColorFilter(Color.argb((int) (params.overlayAlpha * 255), 255, 255, 255),
|
|
PorterDuff.Mode.SRC_ATOP);
|
|
d.draw(canvas);
|
|
d.clearColorFilter();
|
|
}
|
|
d.setBounds(mTempBounds);
|
|
}
|
|
canvas.restore();
|
|
}
|
|
|
|
/**
|
|
* This object represents a FolderIcon preview background. It stores drawing / measurement
|
|
* information, handles drawing, and animation (accept state <--> rest state).
|
|
*/
|
|
public static class PreviewBackground {
|
|
|
|
private final PorterDuffXfermode mClipPorterDuffXfermode
|
|
= new PorterDuffXfermode(PorterDuff.Mode.DST_IN);
|
|
// Create a RadialGradient such that it draws a black circle and then extends with
|
|
// transparent. To achieve this, we keep the gradient to black for the range [0, 1) and
|
|
// just at the edge quickly change it to transparent.
|
|
private final RadialGradient mClipShader = new RadialGradient(0, 0, 1,
|
|
new int[] {Color.BLACK, Color.BLACK, Color.TRANSPARENT },
|
|
new float[] {0, 0.999f, 1},
|
|
Shader.TileMode.CLAMP);
|
|
|
|
private final PorterDuffXfermode mShadowPorterDuffXfermode
|
|
= new PorterDuffXfermode(PorterDuff.Mode.DST_OUT);
|
|
private RadialGradient mShadowShader = null;
|
|
|
|
private final Matrix mShaderMatrix = new Matrix();
|
|
private final Path mPath = new Path();
|
|
|
|
private final Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
|
|
|
|
private float mScale = 1f;
|
|
private float mColorMultiplier = 1f;
|
|
private int mBgColor;
|
|
private float mStrokeWidth;
|
|
private int mStrokeAlpha = MAX_BG_OPACITY;
|
|
private int mShadowAlpha = 255;
|
|
private View mInvalidateDelegate;
|
|
|
|
public int previewSize;
|
|
private int basePreviewOffsetX;
|
|
private int basePreviewOffsetY;
|
|
|
|
private CellLayout mDrawingDelegate;
|
|
public int delegateCellX;
|
|
public int delegateCellY;
|
|
|
|
// When the PreviewBackground is drawn under an icon (for creating a folder) the border
|
|
// should not occlude the icon
|
|
public boolean isClipping = true;
|
|
|
|
// Drawing / animation configurations
|
|
private static final float ACCEPT_SCALE_FACTOR = 1.25f;
|
|
private static final float ACCEPT_COLOR_MULTIPLIER = 1.5f;
|
|
|
|
// Expressed on a scale from 0 to 255.
|
|
private static final int BG_OPACITY = 160;
|
|
private static final int MAX_BG_OPACITY = 225;
|
|
private static final int SHADOW_OPACITY = 40;
|
|
|
|
ValueAnimator mScaleAnimator;
|
|
ObjectAnimator mStrokeAlphaAnimator;
|
|
ObjectAnimator mShadowAnimator;
|
|
|
|
private static final Property<PreviewBackground, Integer> STROKE_ALPHA =
|
|
new Property<PreviewBackground, Integer>(Integer.class, "strokeAlpha") {
|
|
@Override
|
|
public Integer get(PreviewBackground previewBackground) {
|
|
return previewBackground.mStrokeAlpha;
|
|
}
|
|
|
|
@Override
|
|
public void set(PreviewBackground previewBackground, Integer alpha) {
|
|
previewBackground.mStrokeAlpha = alpha;
|
|
previewBackground.invalidate();
|
|
}
|
|
};
|
|
|
|
private static final Property<PreviewBackground, Integer> SHADOW_ALPHA =
|
|
new Property<PreviewBackground, Integer>(Integer.class, "shadowAlpha") {
|
|
@Override
|
|
public Integer get(PreviewBackground previewBackground) {
|
|
return previewBackground.mShadowAlpha;
|
|
}
|
|
|
|
@Override
|
|
public void set(PreviewBackground previewBackground, Integer alpha) {
|
|
previewBackground.mShadowAlpha = alpha;
|
|
previewBackground.invalidate();
|
|
}
|
|
};
|
|
|
|
public void setup(Launcher launcher, View invalidateDelegate,
|
|
int availableSpace, int topPadding) {
|
|
mInvalidateDelegate = invalidateDelegate;
|
|
mBgColor = Themes.getAttrColor(launcher, android.R.attr.colorPrimary);
|
|
|
|
DeviceProfile grid = launcher.getDeviceProfile();
|
|
final int previewSize = grid.folderIconSizePx;
|
|
final int previewPadding = grid.folderIconPreviewPadding;
|
|
|
|
this.previewSize = (previewSize - 2 * previewPadding);
|
|
|
|
basePreviewOffsetX = (availableSpace - this.previewSize) / 2;
|
|
basePreviewOffsetY = previewPadding + grid.folderBackgroundOffset + topPadding;
|
|
|
|
// Stroke width is 1dp
|
|
mStrokeWidth = launcher.getResources().getDisplayMetrics().density;
|
|
|
|
float radius = getScaledRadius();
|
|
float shadowRadius = radius + mStrokeWidth;
|
|
int shadowColor = Color.argb(SHADOW_OPACITY, 0, 0, 0);
|
|
mShadowShader = new RadialGradient(0, 0, 1,
|
|
new int[] {shadowColor, Color.TRANSPARENT},
|
|
new float[] {radius / shadowRadius, 1},
|
|
Shader.TileMode.CLAMP);
|
|
|
|
invalidate();
|
|
}
|
|
|
|
int getRadius() {
|
|
return previewSize / 2;
|
|
}
|
|
|
|
int getScaledRadius() {
|
|
return (int) (mScale * getRadius());
|
|
}
|
|
|
|
int getOffsetX() {
|
|
return basePreviewOffsetX - (getScaledRadius() - getRadius());
|
|
}
|
|
|
|
int getOffsetY() {
|
|
return basePreviewOffsetY - (getScaledRadius() - getRadius());
|
|
}
|
|
|
|
/**
|
|
* Returns the progress of the scale animation, where 0 means the scale is at 1f
|
|
* and 1 means the scale is at ACCEPT_SCALE_FACTOR.
|
|
*/
|
|
float getScaleProgress() {
|
|
return (mScale - 1f) / (ACCEPT_SCALE_FACTOR - 1f);
|
|
}
|
|
|
|
void invalidate() {
|
|
if (mInvalidateDelegate != null) {
|
|
mInvalidateDelegate.invalidate();
|
|
}
|
|
|
|
if (mDrawingDelegate != null) {
|
|
mDrawingDelegate.invalidate();
|
|
}
|
|
}
|
|
|
|
void setInvalidateDelegate(View invalidateDelegate) {
|
|
mInvalidateDelegate = invalidateDelegate;
|
|
invalidate();
|
|
}
|
|
|
|
public void drawBackground(Canvas canvas) {
|
|
mPaint.setStyle(Paint.Style.FILL);
|
|
int alpha = (int) Math.min(MAX_BG_OPACITY, BG_OPACITY * mColorMultiplier);
|
|
mPaint.setColor(ColorUtils.setAlphaComponent(mBgColor, alpha));
|
|
|
|
drawCircle(canvas, 0 /* deltaRadius */);
|
|
|
|
// Draw shadow.
|
|
if (mShadowShader == null) {
|
|
return;
|
|
}
|
|
float radius = getScaledRadius();
|
|
float shadowRadius = radius + mStrokeWidth;
|
|
mPaint.setColor(Color.BLACK);
|
|
int offsetX = getOffsetX();
|
|
int offsetY = getOffsetY();
|
|
final int saveCount;
|
|
if (canvas.isHardwareAccelerated()) {
|
|
saveCount = canvas.saveLayer(offsetX - mStrokeWidth, offsetY,
|
|
offsetX + radius + shadowRadius, offsetY + shadowRadius + shadowRadius,
|
|
null, Canvas.CLIP_TO_LAYER_SAVE_FLAG | Canvas.HAS_ALPHA_LAYER_SAVE_FLAG);
|
|
|
|
} else {
|
|
saveCount = canvas.save(Canvas.CLIP_SAVE_FLAG);
|
|
clipCanvasSoftware(canvas, Region.Op.DIFFERENCE);
|
|
}
|
|
|
|
mShaderMatrix.setScale(shadowRadius, shadowRadius);
|
|
mShaderMatrix.postTranslate(radius + offsetX, shadowRadius + offsetY);
|
|
mShadowShader.setLocalMatrix(mShaderMatrix);
|
|
mPaint.setAlpha(mShadowAlpha);
|
|
mPaint.setShader(mShadowShader);
|
|
canvas.drawPaint(mPaint);
|
|
mPaint.setAlpha(255);
|
|
mPaint.setShader(null);
|
|
if (canvas.isHardwareAccelerated()) {
|
|
mPaint.setXfermode(mShadowPorterDuffXfermode);
|
|
canvas.drawCircle(radius + offsetX, radius + offsetY, radius, mPaint);
|
|
mPaint.setXfermode(null);
|
|
}
|
|
|
|
canvas.restoreToCount(saveCount);
|
|
}
|
|
|
|
public void fadeInBackgroundShadow() {
|
|
if (mShadowAnimator != null) {
|
|
mShadowAnimator.cancel();
|
|
}
|
|
mShadowAnimator = ObjectAnimator
|
|
.ofInt(this, SHADOW_ALPHA, 0, 255)
|
|
.setDuration(100);
|
|
mShadowAnimator.addListener(new AnimatorListenerAdapter() {
|
|
@Override
|
|
public void onAnimationEnd(Animator animation) {
|
|
mShadowAnimator = null;
|
|
}
|
|
});
|
|
mShadowAnimator.start();
|
|
}
|
|
|
|
public void animateBackgroundStroke() {
|
|
if (mStrokeAlphaAnimator != null) {
|
|
mStrokeAlphaAnimator.cancel();
|
|
}
|
|
mStrokeAlphaAnimator = ObjectAnimator
|
|
.ofInt(this, STROKE_ALPHA, MAX_BG_OPACITY / 2, MAX_BG_OPACITY)
|
|
.setDuration(100);
|
|
mStrokeAlphaAnimator.addListener(new AnimatorListenerAdapter() {
|
|
@Override
|
|
public void onAnimationEnd(Animator animation) {
|
|
mStrokeAlphaAnimator = null;
|
|
}
|
|
});
|
|
mStrokeAlphaAnimator.start();
|
|
}
|
|
|
|
public void drawBackgroundStroke(Canvas canvas) {
|
|
mPaint.setColor(ColorUtils.setAlphaComponent(mBgColor, mStrokeAlpha));
|
|
mPaint.setStyle(Paint.Style.STROKE);
|
|
mPaint.setStrokeWidth(mStrokeWidth);
|
|
drawCircle(canvas, 1 /* deltaRadius */);
|
|
}
|
|
|
|
public void drawLeaveBehind(Canvas canvas) {
|
|
float originalScale = mScale;
|
|
mScale = 0.5f;
|
|
|
|
mPaint.setStyle(Paint.Style.FILL);
|
|
mPaint.setColor(Color.argb(160, 245, 245, 245));
|
|
drawCircle(canvas, 0 /* deltaRadius */);
|
|
|
|
mScale = originalScale;
|
|
}
|
|
|
|
private void drawCircle(Canvas canvas,float deltaRadius) {
|
|
float radius = getScaledRadius();
|
|
canvas.drawCircle(radius + getOffsetX(), radius + getOffsetY(),
|
|
radius - deltaRadius, mPaint);
|
|
}
|
|
|
|
// It is the callers responsibility to save and restore the canvas layers.
|
|
private void clipCanvasSoftware(Canvas canvas, Region.Op op) {
|
|
mPath.reset();
|
|
float r = getScaledRadius();
|
|
mPath.addCircle(r + getOffsetX(), r + getOffsetY(), r, Path.Direction.CW);
|
|
canvas.clipPath(mPath, op);
|
|
}
|
|
|
|
// It is the callers responsibility to save and restore the canvas layers.
|
|
private void clipCanvasHardware(Canvas canvas) {
|
|
mPaint.setColor(Color.BLACK);
|
|
mPaint.setXfermode(mClipPorterDuffXfermode);
|
|
|
|
float radius = getScaledRadius();
|
|
mShaderMatrix.setScale(radius, radius);
|
|
mShaderMatrix.postTranslate(radius + getOffsetX(), radius + getOffsetY());
|
|
mClipShader.setLocalMatrix(mShaderMatrix);
|
|
mPaint.setShader(mClipShader);
|
|
canvas.drawPaint(mPaint);
|
|
mPaint.setXfermode(null);
|
|
mPaint.setShader(null);
|
|
}
|
|
|
|
private void delegateDrawing(CellLayout delegate, int cellX, int cellY) {
|
|
if (mDrawingDelegate != delegate) {
|
|
delegate.addFolderBackground(this);
|
|
}
|
|
|
|
mDrawingDelegate = delegate;
|
|
delegateCellX = cellX;
|
|
delegateCellY = cellY;
|
|
|
|
invalidate();
|
|
}
|
|
|
|
private void clearDrawingDelegate() {
|
|
if (mDrawingDelegate != null) {
|
|
mDrawingDelegate.removeFolderBackground(this);
|
|
}
|
|
|
|
mDrawingDelegate = null;
|
|
invalidate();
|
|
}
|
|
|
|
private boolean drawingDelegated() {
|
|
return mDrawingDelegate != null;
|
|
}
|
|
|
|
private void animateScale(float finalScale, float finalMultiplier,
|
|
final Runnable onStart, final Runnable onEnd) {
|
|
final float scale0 = mScale;
|
|
final float scale1 = finalScale;
|
|
|
|
final float bgMultiplier0 = mColorMultiplier;
|
|
final float bgMultiplier1 = finalMultiplier;
|
|
|
|
if (mScaleAnimator != null) {
|
|
mScaleAnimator.cancel();
|
|
}
|
|
|
|
mScaleAnimator = LauncherAnimUtils.ofFloat(0f, 1.0f);
|
|
|
|
mScaleAnimator.addUpdateListener(new AnimatorUpdateListener() {
|
|
@Override
|
|
public void onAnimationUpdate(ValueAnimator animation) {
|
|
float prog = animation.getAnimatedFraction();
|
|
mScale = prog * scale1 + (1 - prog) * scale0;
|
|
mColorMultiplier = prog * bgMultiplier1 + (1 - prog) * bgMultiplier0;
|
|
invalidate();
|
|
}
|
|
});
|
|
mScaleAnimator.addListener(new AnimatorListenerAdapter() {
|
|
@Override
|
|
public void onAnimationStart(Animator animation) {
|
|
if (onStart != null) {
|
|
onStart.run();
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onAnimationEnd(Animator animation) {
|
|
if (onEnd != null) {
|
|
onEnd.run();
|
|
}
|
|
mScaleAnimator = null;
|
|
}
|
|
});
|
|
|
|
mScaleAnimator.setDuration(CONSUMPTION_ANIMATION_DURATION);
|
|
mScaleAnimator.start();
|
|
}
|
|
|
|
public void animateToAccept(final CellLayout cl, final int cellX, final int cellY) {
|
|
Runnable onStart = new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
delegateDrawing(cl, cellX, cellY);
|
|
}
|
|
};
|
|
animateScale(ACCEPT_SCALE_FACTOR, ACCEPT_COLOR_MULTIPLIER, onStart, null);
|
|
}
|
|
|
|
public void animateToRest() {
|
|
// This can be called multiple times -- we need to make sure the drawing delegate
|
|
// is saved and restored at the beginning of the animation, since cancelling the
|
|
// existing animation can clear the delgate.
|
|
final CellLayout cl = mDrawingDelegate;
|
|
final int cellX = delegateCellX;
|
|
final int cellY = delegateCellY;
|
|
|
|
Runnable onStart = new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
delegateDrawing(cl, cellX, cellY);
|
|
}
|
|
};
|
|
Runnable onEnd = new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
clearDrawingDelegate();
|
|
}
|
|
};
|
|
animateScale(1f, 1f, onStart, onEnd);
|
|
}
|
|
|
|
public int getBackgroundAlpha() {
|
|
return (int) Math.min(MAX_BG_OPACITY, BG_OPACITY * mColorMultiplier);
|
|
}
|
|
|
|
public float getStrokeWidth() {
|
|
return mStrokeWidth;
|
|
}
|
|
}
|
|
|
|
public void setFolderBackground(PreviewBackground bg) {
|
|
mBackground = bg;
|
|
mBackground.setInvalidateDelegate(this);
|
|
}
|
|
|
|
public void setBackgroundVisible(boolean visible) {
|
|
mBackgroundIsVisible = visible;
|
|
invalidate();
|
|
}
|
|
|
|
@Override
|
|
protected void dispatchDraw(Canvas canvas) {
|
|
super.dispatchDraw(canvas);
|
|
|
|
if (!mBackgroundIsVisible) return;
|
|
|
|
if (mReferenceDrawable != null) {
|
|
computePreviewDrawingParams(mReferenceDrawable);
|
|
}
|
|
|
|
if (!mBackground.drawingDelegated()) {
|
|
mBackground.drawBackground(canvas);
|
|
}
|
|
|
|
if (mFolder == null) return;
|
|
if (mFolder.getItemCount() == 0 && !mAnimating) return;
|
|
|
|
final int saveCount;
|
|
|
|
if (canvas.isHardwareAccelerated()) {
|
|
saveCount = canvas.saveLayer(0, 0, getWidth(), getHeight(), null,
|
|
Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.CLIP_TO_LAYER_SAVE_FLAG);
|
|
} else {
|
|
saveCount = canvas.save(Canvas.CLIP_SAVE_FLAG);
|
|
if (mPreviewLayoutRule.clipToBackground()) {
|
|
mBackground.clipCanvasSoftware(canvas, Region.Op.INTERSECT);
|
|
}
|
|
}
|
|
|
|
// The items are drawn in coordinates relative to the preview offset
|
|
canvas.translate(mBackground.basePreviewOffsetX, mBackground.basePreviewOffsetY);
|
|
|
|
// The first item should be drawn last (ie. on top of later items)
|
|
for (int i = mDrawingParams.size() - 1; i >= 0; i--) {
|
|
PreviewItemDrawingParams p = mDrawingParams.get(i);
|
|
if (!p.hidden) {
|
|
drawPreviewItem(canvas, p);
|
|
}
|
|
}
|
|
canvas.translate(-mBackground.basePreviewOffsetX, -mBackground.basePreviewOffsetY);
|
|
|
|
if (mPreviewLayoutRule.clipToBackground() && canvas.isHardwareAccelerated()) {
|
|
mBackground.clipCanvasHardware(canvas);
|
|
}
|
|
canvas.restoreToCount(saveCount);
|
|
|
|
if (mPreviewLayoutRule.clipToBackground() && !mBackground.drawingDelegated()) {
|
|
mBackground.drawBackgroundStroke(canvas);
|
|
}
|
|
|
|
if ((mBadgeInfo != null && mBadgeInfo.hasBadge()) || mBadgeScale > 0) {
|
|
int offsetX = mBackground.getOffsetX();
|
|
int offsetY = mBackground.getOffsetY();
|
|
int previewSize = (int) (mBackground.previewSize * mBackground.mScale);
|
|
mTempBounds.set(offsetX, offsetY, offsetX + previewSize, offsetY + previewSize);
|
|
|
|
// If we are animating to the accepting state, animate the badge out.
|
|
float badgeScale = Math.max(0, mBadgeScale - mBackground.getScaleProgress());
|
|
mTempSpaceForBadgeOffset.set(getWidth() - mTempBounds.right, mTempBounds.top);
|
|
IconPalette badgePalette = IconPalette.getFolderBadgePalette(getResources());
|
|
mBadgeRenderer.draw(canvas, badgePalette, mBadgeInfo, mTempBounds,
|
|
badgeScale, mTempSpaceForBadgeOffset);
|
|
}
|
|
}
|
|
|
|
class FolderPreviewItemAnim {
|
|
ValueAnimator mValueAnimator;
|
|
float finalScale;
|
|
float finalTransX;
|
|
float finalTransY;
|
|
|
|
/**
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*
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* @param params layout params to animate
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* @param index0 original index of the item to be animated
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* @param nItems0 original number of items in the preview
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* @param index1 new index of the item to be animated
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* @param nItems1 new number of items in the preview
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* @param duration duration in ms of the animation
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* @param onCompleteRunnable runnable to execute upon animation completion
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*/
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public FolderPreviewItemAnim(final PreviewItemDrawingParams params, int index0, int nItems0,
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int index1, int nItems1, int duration, final Runnable onCompleteRunnable) {
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computePreviewItemDrawingParams(index1, nItems1, mTmpParams);
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finalScale = mTmpParams.scale;
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finalTransX = mTmpParams.transX;
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finalTransY = mTmpParams.transY;
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computePreviewItemDrawingParams(index0, nItems0, mTmpParams);
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final float scale0 = mTmpParams.scale;
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final float transX0 = mTmpParams.transX;
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final float transY0 = mTmpParams.transY;
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mValueAnimator = LauncherAnimUtils.ofFloat(0f, 1.0f);
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mValueAnimator.addUpdateListener(new AnimatorUpdateListener(){
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public void onAnimationUpdate(ValueAnimator animation) {
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float progress = animation.getAnimatedFraction();
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params.transX = transX0 + progress * (finalTransX - transX0);
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params.transY = transY0 + progress * (finalTransY - transY0);
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params.scale = scale0 + progress * (finalScale - scale0);
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invalidate();
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}
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});
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mValueAnimator.addListener(new AnimatorListenerAdapter() {
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@Override
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public void onAnimationStart(Animator animation) {
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}
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@Override
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public void onAnimationEnd(Animator animation) {
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if (onCompleteRunnable != null) {
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onCompleteRunnable.run();
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}
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params.anim = null;
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}
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});
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mValueAnimator.setDuration(duration);
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}
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public void start() {
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mValueAnimator.start();
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}
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public void cancel() {
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mValueAnimator.cancel();
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}
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public boolean hasEqualFinalState(FolderPreviewItemAnim anim) {
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return finalTransY == anim.finalTransY && finalTransX == anim.finalTransX &&
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finalScale == anim.finalScale;
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}
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}
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private void animateFirstItem(final Drawable d, int duration, final boolean reverse,
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final Runnable onCompleteRunnable) {
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FolderPreviewItemAnim anim;
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if (!reverse) {
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anim = new FolderPreviewItemAnim(mDrawingParams.get(0), -1, -1, 0, 2, duration,
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onCompleteRunnable);
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} else {
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anim = new FolderPreviewItemAnim(mDrawingParams.get(0), 0, 2, -1, -1, duration,
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onCompleteRunnable);
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}
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anim.start();
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}
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public void setTextVisible(boolean visible) {
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if (visible) {
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mFolderName.setVisibility(VISIBLE);
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} else {
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mFolderName.setVisibility(INVISIBLE);
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}
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}
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public boolean getTextVisible() {
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return mFolderName.getVisibility() == VISIBLE;
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}
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public List<BubbleTextView> getItemsToDisplay() {
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mPreviewVerifier.setFolderInfo(mFolder.getInfo());
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List<BubbleTextView> itemsToDisplay = new ArrayList<>();
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List<View> allItems = mFolder.getItemsInReadingOrder();
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int numItems = allItems.size();
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for (int rank = 0; rank < numItems; ++rank) {
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if (mPreviewVerifier.isItemInPreview(rank)) {
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itemsToDisplay.add((BubbleTextView) allItems.get(rank));
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}
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if (itemsToDisplay.size() == FolderIcon.NUM_ITEMS_IN_PREVIEW) {
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break;
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}
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}
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return itemsToDisplay;
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}
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private void updateItemDrawingParams(boolean animate) {
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List<BubbleTextView> items = getItemsToDisplay();
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int nItemsInPreview = items.size();
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int prevNumItems = mDrawingParams.size();
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// We adjust the size of the list to match the number of items in the preview
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while (nItemsInPreview < mDrawingParams.size()) {
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mDrawingParams.remove(mDrawingParams.size() - 1);
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}
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while (nItemsInPreview > mDrawingParams.size()) {
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mDrawingParams.add(new PreviewItemDrawingParams(0, 0, 0, 0));
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}
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for (int i = 0; i < mDrawingParams.size(); i++) {
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PreviewItemDrawingParams p = mDrawingParams.get(i);
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p.drawable = items.get(i).getCompoundDrawables()[1];
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if (!animate || FeatureFlags.LAUNCHER3_LEGACY_FOLDER_ICON) {
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computePreviewItemDrawingParams(i, nItemsInPreview, p);
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if (mReferenceDrawable == null) {
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mReferenceDrawable = p.drawable;
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}
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} else {
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FolderPreviewItemAnim anim = new FolderPreviewItemAnim(p, i, prevNumItems, i,
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nItemsInPreview, DROP_IN_ANIMATION_DURATION, null);
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if (p.anim != null) {
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if (p.anim.hasEqualFinalState(anim)) {
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// do nothing, let the current animation finish
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continue;
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}
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p.anim.cancel();
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}
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p.anim = anim;
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p.anim.start();
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}
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}
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}
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@Override
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public void onItemsChanged(boolean animate) {
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updateItemDrawingParams(animate);
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invalidate();
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requestLayout();
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}
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@Override
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public void prepareAutoUpdate() {
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}
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@Override
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public void onAdd(ShortcutInfo item, int rank) {
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boolean wasBadged = mBadgeInfo.hasBadge();
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mBadgeInfo.addBadgeInfo(mLauncher.getPopupDataProvider().getBadgeInfoForItem(item));
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boolean isBadged = mBadgeInfo.hasBadge();
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updateBadgeScale(wasBadged, isBadged);
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invalidate();
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requestLayout();
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}
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@Override
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public void onRemove(ShortcutInfo item) {
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boolean wasBadged = mBadgeInfo.hasBadge();
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mBadgeInfo.subtractBadgeInfo(mLauncher.getPopupDataProvider().getBadgeInfoForItem(item));
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boolean isBadged = mBadgeInfo.hasBadge();
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updateBadgeScale(wasBadged, isBadged);
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invalidate();
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requestLayout();
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}
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@Override
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public void onTitleChanged(CharSequence title) {
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mFolderName.setText(title);
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setContentDescription(getContext().getString(R.string.folder_name_format, title));
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}
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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// Call the superclass onTouchEvent first, because sometimes it changes the state to
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// isPressed() on an ACTION_UP
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boolean result = super.onTouchEvent(event);
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// Check for a stylus button press, if it occurs cancel any long press checks.
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if (mStylusEventHelper.onMotionEvent(event)) {
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mLongPressHelper.cancelLongPress();
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return true;
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}
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switch (event.getAction()) {
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case MotionEvent.ACTION_DOWN:
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mLongPressHelper.postCheckForLongPress();
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break;
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case MotionEvent.ACTION_CANCEL:
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case MotionEvent.ACTION_UP:
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mLongPressHelper.cancelLongPress();
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break;
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case MotionEvent.ACTION_MOVE:
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if (!Utilities.pointInView(this, event.getX(), event.getY(), mSlop)) {
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mLongPressHelper.cancelLongPress();
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}
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break;
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}
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return result;
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}
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@Override
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public void cancelLongPress() {
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super.cancelLongPress();
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mLongPressHelper.cancelLongPress();
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}
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public void removeListeners() {
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mInfo.removeListener(this);
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mInfo.removeListener(mFolder);
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}
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public void shrinkAndFadeIn(boolean animate) {
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// We remove and re-draw the FolderIcon in-case it has changed
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final PreviewImageView previewImage = PreviewImageView.get(getContext());
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previewImage.removeFromParent();
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copyToPreview(previewImage);
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clearLeaveBehindIfExists();
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ObjectAnimator oa = LauncherAnimUtils.ofViewAlphaAndScale(previewImage, 1, 1, 1);
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oa.setDuration(getResources().getInteger(R.integer.config_folderExpandDuration));
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oa.addListener(new AnimatorListenerAdapter() {
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@Override
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public void onAnimationEnd(Animator animation) {
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// Remove the ImageView copy of the FolderIcon and make the original visible.
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previewImage.removeFromParent();
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setVisibility(View.VISIBLE);
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}
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});
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oa.start();
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if (!animate) {
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oa.end();
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}
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}
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public void clearLeaveBehindIfExists() {
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((CellLayout.LayoutParams) getLayoutParams()).canReorder = true;
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if (mInfo.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
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CellLayout cl = (CellLayout) getParent().getParent();
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cl.clearFolderLeaveBehind();
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}
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}
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public void drawLeaveBehindIfExists() {
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CellLayout.LayoutParams lp = (CellLayout.LayoutParams) getLayoutParams();
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// While the folder is open, the position of the icon cannot change.
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lp.canReorder = false;
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if (mInfo.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
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CellLayout cl = (CellLayout) getParent().getParent();
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cl.setFolderLeaveBehindCell(lp.cellX, lp.cellY);
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}
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}
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public void growAndFadeOut() {
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drawLeaveBehindIfExists();
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// Push an ImageView copy of the FolderIcon into the DragLayer and hide the original
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PreviewImageView previewImage = PreviewImageView.get(getContext());
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copyToPreview(previewImage);
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setVisibility(View.INVISIBLE);
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ObjectAnimator oa = LauncherAnimUtils.ofViewAlphaAndScale(previewImage, 0, 1.5f, 1.5f);
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oa.setDuration(getResources().getInteger(R.integer.config_folderExpandDuration));
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oa.start();
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}
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/**
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* This method draws the FolderIcon to an ImageView and then adds and positions that ImageView
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* in the DragLayer in the exact absolute location of the original FolderIcon.
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*/
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private void copyToPreview(PreviewImageView previewImageView) {
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previewImageView.copy(this);
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if (mFolder != null) {
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previewImageView.setPivotX(mFolder.getPivotXForIconAnimation());
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previewImageView.setPivotY(mFolder.getPivotYForIconAnimation());
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mFolder.bringToFront();
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}
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}
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public interface PreviewLayoutRule {
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PreviewItemDrawingParams computePreviewItemDrawingParams(int index, int curNumItems,
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PreviewItemDrawingParams params);
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void init(int availableSpace, int intrinsicIconSize, boolean rtl);
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float scaleForItem(int index, int totalNumItems);
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float getIconSize();
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int maxNumItems();
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boolean clipToBackground();
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}
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}
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