mirror of
https://github.com/Katana-Official/SPatch-Update.git
synced 2026-03-25 05:59:46 +08:00
First commit
This commit is contained in:
Katana
437
app/src/main/java/com/android/launcher2/DeleteDropTarget.java
Normal file
437
app/src/main/java/com/android/launcher2/DeleteDropTarget.java
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@@ -0,0 +1,437 @@
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/*
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* Copyright (C) 2011 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.launcher2;
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import android.animation.TimeInterpolator;
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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.content.res.ColorStateList;
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import android.content.res.Configuration;
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import android.content.res.Resources;
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import android.graphics.PointF;
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import android.graphics.Rect;
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import android.graphics.drawable.TransitionDrawable;
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import android.util.AttributeSet;
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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.AnimationUtils;
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import android.view.animation.DecelerateInterpolator;
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import android.view.animation.LinearInterpolator;
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import com.android.launcher.R;
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public class DeleteDropTarget extends ButtonDropTarget {
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private static int DELETE_ANIMATION_DURATION = 285;
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private static int FLING_DELETE_ANIMATION_DURATION = 350;
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private static float FLING_TO_DELETE_FRICTION = 0.035f;
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private static int MODE_FLING_DELETE_TO_TRASH = 0;
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private static int MODE_FLING_DELETE_ALONG_VECTOR = 1;
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private final int mFlingDeleteMode = MODE_FLING_DELETE_ALONG_VECTOR;
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private ColorStateList mOriginalTextColor;
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private TransitionDrawable mUninstallDrawable;
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private TransitionDrawable mRemoveDrawable;
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private TransitionDrawable mCurrentDrawable;
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public DeleteDropTarget(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public DeleteDropTarget(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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@Override
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protected void onFinishInflate() {
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super.onFinishInflate();
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// Get the drawable
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mOriginalTextColor = getTextColors();
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// Get the hover color
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Resources r = getResources();
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mHoverColor = r.getColor(R.color.delete_target_hover_tint);
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mUninstallDrawable = (TransitionDrawable)
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r.getDrawable(R.drawable.uninstall_target_selector);
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mRemoveDrawable = (TransitionDrawable) r.getDrawable(R.drawable.remove_target_selector);
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mRemoveDrawable.setCrossFadeEnabled(true);
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mUninstallDrawable.setCrossFadeEnabled(true);
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// The current drawable is set to either the remove drawable or the uninstall drawable
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// and is initially set to the remove drawable, as set in the layout xml.
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mCurrentDrawable = (TransitionDrawable) getCurrentDrawable();
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// Remove the text in the Phone UI in landscape
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int orientation = getResources().getConfiguration().orientation;
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if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
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if (!LauncherApplication.isScreenLarge()) {
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setText("");
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}
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}
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}
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private boolean isAllAppsApplication(DragSource source, Object info) {
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return (source instanceof AppsCustomizePagedView) && (info instanceof ApplicationInfo);
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}
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private boolean isAllAppsWidget(DragSource source, Object info) {
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if (source instanceof AppsCustomizePagedView) {
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if (info instanceof PendingAddItemInfo) {
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PendingAddItemInfo addInfo = (PendingAddItemInfo) info;
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switch (addInfo.itemType) {
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case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
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case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
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return true;
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}
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}
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}
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return false;
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}
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private boolean isDragSourceWorkspaceOrFolder(DragObject d) {
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return (d.dragSource instanceof Workspace) || (d.dragSource instanceof Folder);
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}
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private boolean isWorkspaceOrFolderApplication(DragObject d) {
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return isDragSourceWorkspaceOrFolder(d) && (d.dragInfo instanceof ShortcutInfo);
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}
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private boolean isWorkspaceOrFolderWidget(DragObject d) {
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return isDragSourceWorkspaceOrFolder(d) && (d.dragInfo instanceof LauncherAppWidgetInfo);
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}
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private boolean isWorkspaceFolder(DragObject d) {
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return (d.dragSource instanceof Workspace) && (d.dragInfo instanceof FolderInfo);
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}
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private void setHoverColor() {
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mCurrentDrawable.startTransition(mTransitionDuration);
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setTextColor(mHoverColor);
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}
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private void resetHoverColor() {
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mCurrentDrawable.resetTransition();
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setTextColor(mOriginalTextColor);
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}
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@Override
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public boolean acceptDrop(DragObject d) {
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// We can remove everything including App shortcuts, folders, widgets, etc.
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return true;
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}
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@Override
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public void onDragStart(DragSource source, Object info, int dragAction) {
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boolean isVisible = true;
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boolean isUninstall = false;
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// If we are dragging a widget from AppsCustomize, hide the delete target
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if (isAllAppsWidget(source, info)) {
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isVisible = false;
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}
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// If we are dragging an application from AppsCustomize, only show the control if we can
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// delete the app (it was downloaded), and rename the string to "uninstall" in such a case
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if (isAllAppsApplication(source, info)) {
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ApplicationInfo appInfo = (ApplicationInfo) info;
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if ((appInfo.flags & ApplicationInfo.DOWNLOADED_FLAG) != 0) {
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isUninstall = true;
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} else {
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isVisible = false;
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}
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}
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if (isUninstall) {
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setCompoundDrawablesRelativeWithIntrinsicBounds(mUninstallDrawable, null, null, null);
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} else {
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setCompoundDrawablesRelativeWithIntrinsicBounds(mRemoveDrawable, null, null, null);
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}
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mCurrentDrawable = (TransitionDrawable) getCurrentDrawable();
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mActive = isVisible;
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resetHoverColor();
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((ViewGroup) getParent()).setVisibility(isVisible ? View.VISIBLE : View.GONE);
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if (getText().length() > 0) {
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setText(isUninstall ? R.string.delete_target_uninstall_label
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: R.string.delete_target_label);
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}
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}
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@Override
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public void onDragEnd() {
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super.onDragEnd();
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mActive = false;
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}
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public void onDragEnter(DragObject d) {
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super.onDragEnter(d);
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setHoverColor();
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}
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public void onDragExit(DragObject d) {
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super.onDragExit(d);
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if (!d.dragComplete) {
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resetHoverColor();
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} else {
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// Restore the hover color if we are deleting
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d.dragView.setColor(mHoverColor);
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}
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}
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private void animateToTrashAndCompleteDrop(final DragObject d) {
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DragLayer dragLayer = mLauncher.getDragLayer();
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Rect from = new Rect();
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dragLayer.getViewRectRelativeToSelf(d.dragView, from);
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Rect to = getIconRect(d.dragView.getMeasuredWidth(), d.dragView.getMeasuredHeight(),
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mCurrentDrawable.getIntrinsicWidth(), mCurrentDrawable.getIntrinsicHeight());
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float scale = (float) to.width() / from.width();
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mSearchDropTargetBar.deferOnDragEnd();
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Runnable onAnimationEndRunnable = new Runnable() {
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@Override
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public void run() {
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mSearchDropTargetBar.onDragEnd();
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mLauncher.exitSpringLoadedDragMode();
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completeDrop(d);
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}
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};
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dragLayer.animateView(d.dragView, from, to, scale, 1f, 1f, 0.1f, 0.1f,
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DELETE_ANIMATION_DURATION, new DecelerateInterpolator(2),
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new LinearInterpolator(), onAnimationEndRunnable,
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DragLayer.ANIMATION_END_DISAPPEAR, null);
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}
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private void completeDrop(DragObject d) {
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ItemInfo item = (ItemInfo) d.dragInfo;
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if (isAllAppsApplication(d.dragSource, item)) {
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// Uninstall the application if it is being dragged from AppsCustomize
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mLauncher.startApplicationUninstallActivity((ApplicationInfo) item);
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} else if (isWorkspaceOrFolderApplication(d)) {
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LauncherModel.deleteItemFromDatabase(mLauncher, item);
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} else if (isWorkspaceFolder(d)) {
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// Remove the folder from the workspace and delete the contents from launcher model
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FolderInfo folderInfo = (FolderInfo) item;
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mLauncher.removeFolder(folderInfo);
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LauncherModel.deleteFolderContentsFromDatabase(mLauncher, folderInfo);
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} else if (isWorkspaceOrFolderWidget(d)) {
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// Remove the widget from the workspace
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mLauncher.removeAppWidget((LauncherAppWidgetInfo) item);
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LauncherModel.deleteItemFromDatabase(mLauncher, item);
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final LauncherAppWidgetInfo launcherAppWidgetInfo = (LauncherAppWidgetInfo) item;
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final LauncherAppWidgetHost appWidgetHost = mLauncher.getAppWidgetHost();
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if (appWidgetHost != null) {
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// Deleting an app widget ID is a void call but writes to disk before returning
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// to the caller...
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new Thread("deleteAppWidgetId") {
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public void run() {
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appWidgetHost.deleteAppWidgetId(launcherAppWidgetInfo.appWidgetId);
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}
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}.start();
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}
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}
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}
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public void onDrop(DragObject d) {
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animateToTrashAndCompleteDrop(d);
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}
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/**
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* Creates an animation from the current drag view to the delete trash icon.
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*/
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private AnimatorUpdateListener createFlingToTrashAnimatorListener(final DragLayer dragLayer,
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DragObject d, PointF vel, ViewConfiguration config) {
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final Rect to = getIconRect(d.dragView.getMeasuredWidth(), d.dragView.getMeasuredHeight(),
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mCurrentDrawable.getIntrinsicWidth(), mCurrentDrawable.getIntrinsicHeight());
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final Rect from = new Rect();
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dragLayer.getViewRectRelativeToSelf(d.dragView, from);
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// Calculate how far along the velocity vector we should put the intermediate point on
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// the bezier curve
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float velocity = Math.abs(vel.length());
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float vp = Math.min(1f, velocity / (config.getScaledMaximumFlingVelocity() / 2f));
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int offsetY = (int) (-from.top * vp);
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int offsetX = (int) (offsetY / (vel.y / vel.x));
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final float y2 = from.top + offsetY; // intermediate t/l
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final float x2 = from.left + offsetX;
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final float x1 = from.left; // drag view t/l
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final float y1 = from.top;
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final float x3 = to.left; // delete target t/l
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final float y3 = to.top;
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final TimeInterpolator scaleAlphaInterpolator = new TimeInterpolator() {
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@Override
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public float getInterpolation(float t) {
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return t * t * t * t * t * t * t * t;
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}
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};
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return new AnimatorUpdateListener() {
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@Override
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public void onAnimationUpdate(ValueAnimator animation) {
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final DragView dragView = (DragView) dragLayer.getAnimatedView();
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float t = ((Float) animation.getAnimatedValue()).floatValue();
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float tp = scaleAlphaInterpolator.getInterpolation(t);
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float initialScale = dragView.getInitialScale();
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float finalAlpha = 0.5f;
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float scale = dragView.getScaleX();
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float x1o = ((1f - scale) * dragView.getMeasuredWidth()) / 2f;
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float y1o = ((1f - scale) * dragView.getMeasuredHeight()) / 2f;
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float x = (1f - t) * (1f - t) * (x1 - x1o) + 2 * (1f - t) * t * (x2 - x1o) +
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(t * t) * x3;
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float y = (1f - t) * (1f - t) * (y1 - y1o) + 2 * (1f - t) * t * (y2 - x1o) +
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(t * t) * y3;
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dragView.setTranslationX(x);
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dragView.setTranslationY(y);
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dragView.setScaleX(initialScale * (1f - tp));
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dragView.setScaleY(initialScale * (1f - tp));
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dragView.setAlpha(finalAlpha + (1f - finalAlpha) * (1f - tp));
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}
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};
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}
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/**
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* Creates an animation from the current drag view along its current velocity vector.
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* For this animation, the alpha runs for a fixed duration and we update the position
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* progressively.
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*/
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private static class FlingAlongVectorAnimatorUpdateListener implements AnimatorUpdateListener {
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private DragLayer mDragLayer;
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private PointF mVelocity;
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private Rect mFrom;
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private long mPrevTime;
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private boolean mHasOffsetForScale;
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private float mFriction;
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private final TimeInterpolator mAlphaInterpolator = new DecelerateInterpolator(0.75f);
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public FlingAlongVectorAnimatorUpdateListener(DragLayer dragLayer, PointF vel, Rect from,
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long startTime, float friction) {
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mDragLayer = dragLayer;
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mVelocity = vel;
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mFrom = from;
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mPrevTime = startTime;
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mFriction = 1f - (dragLayer.getResources().getDisplayMetrics().density * friction);
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}
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@Override
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public void onAnimationUpdate(ValueAnimator animation) {
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final DragView dragView = (DragView) mDragLayer.getAnimatedView();
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float t = ((Float) animation.getAnimatedValue()).floatValue();
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long curTime = AnimationUtils.currentAnimationTimeMillis();
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if (!mHasOffsetForScale) {
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mHasOffsetForScale = true;
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float scale = dragView.getScaleX();
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float xOffset = ((scale - 1f) * dragView.getMeasuredWidth()) / 2f;
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float yOffset = ((scale - 1f) * dragView.getMeasuredHeight()) / 2f;
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mFrom.left += xOffset;
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mFrom.top += yOffset;
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}
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mFrom.left += (mVelocity.x * (curTime - mPrevTime) / 1000f);
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mFrom.top += (mVelocity.y * (curTime - mPrevTime) / 1000f);
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dragView.setTranslationX(mFrom.left);
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dragView.setTranslationY(mFrom.top);
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dragView.setAlpha(1f - mAlphaInterpolator.getInterpolation(t));
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mVelocity.x *= mFriction;
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mVelocity.y *= mFriction;
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mPrevTime = curTime;
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}
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};
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private AnimatorUpdateListener createFlingAlongVectorAnimatorListener(final DragLayer dragLayer,
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DragObject d, PointF vel, final long startTime, final int duration,
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ViewConfiguration config) {
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final Rect from = new Rect();
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dragLayer.getViewRectRelativeToSelf(d.dragView, from);
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return new FlingAlongVectorAnimatorUpdateListener(dragLayer, vel, from, startTime,
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FLING_TO_DELETE_FRICTION);
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}
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public void onFlingToDelete(final DragObject d, int x, int y, PointF vel) {
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final boolean isAllApps = d.dragSource instanceof AppsCustomizePagedView;
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// Don't highlight the icon as it's animating
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d.dragView.setColor(0);
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d.dragView.updateInitialScaleToCurrentScale();
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// Don't highlight the target if we are flinging from AllApps
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if (isAllApps) {
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resetHoverColor();
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}
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if (mFlingDeleteMode == MODE_FLING_DELETE_TO_TRASH) {
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// Defer animating out the drop target if we are animating to it
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mSearchDropTargetBar.deferOnDragEnd();
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mSearchDropTargetBar.finishAnimations();
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}
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final ViewConfiguration config = ViewConfiguration.get(mLauncher);
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final DragLayer dragLayer = mLauncher.getDragLayer();
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final int duration = FLING_DELETE_ANIMATION_DURATION;
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final long startTime = AnimationUtils.currentAnimationTimeMillis();
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// NOTE: Because it takes time for the first frame of animation to actually be
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// called and we expect the animation to be a continuation of the fling, we have
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// to account for the time that has elapsed since the fling finished. And since
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// we don't have a startDelay, we will always get call to update when we call
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// start() (which we want to ignore).
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final TimeInterpolator tInterpolator = new TimeInterpolator() {
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private int mCount = -1;
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private float mOffset = 0f;
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@Override
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public float getInterpolation(float t) {
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if (mCount < 0) {
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mCount++;
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} else if (mCount == 0) {
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mOffset = Math.min(0.5f, (float) (AnimationUtils.currentAnimationTimeMillis() -
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startTime) / duration);
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mCount++;
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}
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return Math.min(1f, mOffset + t);
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}
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};
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AnimatorUpdateListener updateCb = null;
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if (mFlingDeleteMode == MODE_FLING_DELETE_TO_TRASH) {
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updateCb = createFlingToTrashAnimatorListener(dragLayer, d, vel, config);
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} else if (mFlingDeleteMode == MODE_FLING_DELETE_ALONG_VECTOR) {
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updateCb = createFlingAlongVectorAnimatorListener(dragLayer, d, vel, startTime,
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duration, config);
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}
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Runnable onAnimationEndRunnable = new Runnable() {
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@Override
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public void run() {
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mSearchDropTargetBar.onDragEnd();
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// If we are dragging from AllApps, then we allow AppsCustomizePagedView to clean up
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// itself, otherwise, complete the drop to initiate the deletion process
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if (!isAllApps) {
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mLauncher.exitSpringLoadedDragMode();
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completeDrop(d);
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}
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mLauncher.getDragController().onDeferredEndFling(d);
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}
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};
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dragLayer.animateView(d.dragView, updateCb, duration, tInterpolator, onAnimationEndRunnable,
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DragLayer.ANIMATION_END_DISAPPEAR, null);
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}
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}
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Reference in New Issue
Block a user