| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.launcher3; |
| |
| import android.animation.Animator; |
| import android.animation.AnimatorListenerAdapter; |
| import android.animation.AnimatorSet; |
| import android.animation.ObjectAnimator; |
| import android.animation.TimeInterpolator; |
| import android.content.Context; |
| import android.graphics.Rect; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.view.ViewDebug; |
| import android.view.accessibility.AccessibilityManager; |
| import android.view.animation.AccelerateInterpolator; |
| import android.view.animation.DecelerateInterpolator; |
| |
| import com.android.launcher3.dragndrop.DragController; |
| import com.android.launcher3.util.Thunk; |
| |
| /* |
| * This bar will manage the transition between the QSB search bar and the delete/uninstall drop |
| * targets so that each of the individual ButtonDropTargets don't have to. |
| */ |
| public class SearchDropTargetBar extends BaseDropTargetBar { |
| |
| private static final TimeInterpolator MOVE_DOWN_INTERPOLATOR = new DecelerateInterpolator(0.6f); |
| private static final TimeInterpolator MOVE_UP_INTERPOLATOR = new DecelerateInterpolator(1.5f); |
| |
| /** The different states that the search bar space can be in. */ |
| public enum State { |
| INVISIBLE (0f, 0f, 0f), |
| INVISIBLE_TRANSLATED (0f, 0f, -1f), |
| SEARCH_BAR (1f, 0f, 0f), |
| DROP_TARGET (0f, 1f, 0f); |
| |
| private final float mSearchBarAlpha; |
| private final float mDropTargetBarAlpha; |
| private final float mTranslation; |
| |
| State(float sbAlpha, float dtbAlpha, float translation) { |
| mSearchBarAlpha = sbAlpha; |
| mDropTargetBarAlpha = dtbAlpha; |
| mTranslation = translation; |
| } |
| |
| } |
| |
| |
| @ViewDebug.ExportedProperty(category = "launcher") |
| private State mState = State.SEARCH_BAR; |
| @Thunk View mQSB; |
| |
| // Drop targets |
| private ButtonDropTarget mDeleteDropTarget; |
| private ButtonDropTarget mUninstallDropTarget; |
| |
| public SearchDropTargetBar(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public SearchDropTargetBar(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| |
| // Get the individual components |
| mDeleteDropTarget = (ButtonDropTarget) mDropTargetBar.findViewById(R.id.delete_target_text); |
| mUninstallDropTarget = (ButtonDropTarget) mDropTargetBar |
| .findViewById(R.id.uninstall_target_text); |
| |
| mDeleteDropTarget.setDropTargetBar(this); |
| mUninstallDropTarget.setDropTargetBar(this); |
| } |
| |
| @Override |
| public void setup(Launcher launcher, DragController dragController) { |
| dragController.addDragListener(this); |
| dragController.setFlingToDeleteDropTarget(mDeleteDropTarget); |
| |
| dragController.addDragListener(mDeleteDropTarget); |
| dragController.addDragListener(mUninstallDropTarget); |
| |
| dragController.addDropTarget(mDeleteDropTarget); |
| dragController.addDropTarget(mUninstallDropTarget); |
| |
| mDeleteDropTarget.setLauncher(launcher); |
| mUninstallDropTarget.setLauncher(launcher); |
| } |
| |
| @Override |
| public void showDropTargets() { |
| animateToState(State.DROP_TARGET, DEFAULT_DRAG_FADE_DURATION); |
| } |
| |
| @Override |
| public void hideDropTargets() { |
| animateToState(State.SEARCH_BAR, DEFAULT_DRAG_FADE_DURATION); |
| } |
| |
| public void setQsbSearchBar(View qsb) { |
| mQSB = qsb; |
| } |
| |
| /** |
| * Animates the current search bar state to a new state. If the {@param duration} is 0, then |
| * the state is applied immediately. |
| */ |
| public void animateToState(State newState, int duration) { |
| animateToState(newState, duration, null); |
| } |
| |
| public void animateToState(State newState, int duration, AnimatorSet animation) { |
| if (mState != newState) { |
| mState = newState; |
| |
| resetAnimation(duration); |
| if (duration > 0) { |
| animateAlpha(mDropTargetBar, mState.mDropTargetBarAlpha, DEFAULT_INTERPOLATOR); |
| } else { |
| mDropTargetBar.setAlpha(mState.mDropTargetBarAlpha); |
| AlphaUpdateListener.updateVisibility(mDropTargetBar, mAccessibilityEnabled); |
| } |
| |
| if (mQSB != null) { |
| boolean isVertical = ((Launcher) getContext()).getDeviceProfile() |
| .isVerticalBarLayout(); |
| float translation = isVertical ? 0 : mState.mTranslation * getMeasuredHeight(); |
| |
| if (duration > 0) { |
| int translationChange = Float.compare(mQSB.getTranslationY(), translation); |
| |
| animateAlpha(mQSB, mState.mSearchBarAlpha, |
| translationChange == 0 ? DEFAULT_INTERPOLATOR |
| : (translationChange < 0 ? MOVE_DOWN_INTERPOLATOR |
| : MOVE_UP_INTERPOLATOR)); |
| |
| if (translationChange != 0) { |
| mCurrentAnimation.play( |
| ObjectAnimator.ofFloat(mQSB, View.TRANSLATION_Y, translation)); |
| } |
| } else { |
| mQSB.setTranslationY(translation); |
| mQSB.setAlpha(mState.mSearchBarAlpha); |
| AlphaUpdateListener.updateVisibility(mQSB, mAccessibilityEnabled); |
| } |
| } |
| |
| // Start the final animation |
| if (duration > 0) { |
| if (animation != null) { |
| animation.play(mCurrentAnimation); |
| } else { |
| mCurrentAnimation.start(); |
| } |
| } |
| } |
| } |
| |
| /** |
| * @return the bounds of the QSB search bar. |
| */ |
| public Rect getSearchBarBounds() { |
| if (mQSB != null) { |
| final int[] pos = new int[2]; |
| mQSB.getLocationOnScreen(pos); |
| |
| final Rect rect = new Rect(); |
| rect.left = pos[0]; |
| rect.top = pos[1]; |
| rect.right = pos[0] + mQSB.getWidth(); |
| rect.bottom = pos[1] + mQSB.getHeight(); |
| return rect; |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public void enableAccessibleDrag(boolean enable) { |
| if (mQSB != null) { |
| mQSB.setVisibility(enable ? View.GONE : View.VISIBLE); |
| } |
| mDeleteDropTarget.enableAccessibleDrag(enable); |
| mUninstallDropTarget.enableAccessibleDrag(enable); |
| } |
| } |