| /* |
| * 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.content.Context; |
| import android.graphics.Rect; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.view.accessibility.AccessibilityManager; |
| import android.view.animation.AccelerateInterpolator; |
| import android.widget.FrameLayout; |
| |
| import com.android.launcher3.util.Thunk; |
| |
| /* |
| * Ths bar will manage the transition between the QSB search bar and the delete drop |
| * targets so that each of the individual IconDropTargets don't have to. |
| */ |
| public class SearchDropTargetBar extends FrameLayout implements DragController.DragListener { |
| |
| /** The different states that the search bar space can be in. */ |
| public enum State { |
| INVISIBLE (0f, 0f), |
| SEARCH_BAR (1f, 0f), |
| DROP_TARGET (0f, 1f); |
| |
| private final float mSearchBarAlpha; |
| private final float mDropTargetBarAlpha; |
| |
| State(float sbAlpha, float dtbAlpha) { |
| mSearchBarAlpha = sbAlpha; |
| mDropTargetBarAlpha = dtbAlpha; |
| } |
| |
| float getSearchBarAlpha() { |
| return mSearchBarAlpha; |
| } |
| |
| float getDropTargetBarAlpha() { |
| return mDropTargetBarAlpha; |
| } |
| } |
| |
| private static int DEFAULT_DRAG_FADE_DURATION = 175; |
| |
| private LauncherViewPropertyAnimator mDropTargetBarAnimator; |
| private LauncherViewPropertyAnimator mQSBSearchBarAnimator; |
| private static final AccelerateInterpolator sAccelerateInterpolator = |
| new AccelerateInterpolator(); |
| |
| private State mState = State.SEARCH_BAR; |
| @Thunk View mQSB; |
| @Thunk View mDropTargetBar; |
| private boolean mDeferOnDragEnd = false; |
| @Thunk boolean mAccessibilityEnabled = false; |
| |
| // Drop targets |
| private ButtonDropTarget mInfoDropTarget; |
| 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); |
| } |
| |
| public void setup(Launcher launcher, DragController dragController) { |
| dragController.addDragListener(this); |
| dragController.setFlingToDeleteDropTarget(mDeleteDropTarget); |
| |
| dragController.addDragListener(mInfoDropTarget); |
| dragController.addDragListener(mDeleteDropTarget); |
| dragController.addDragListener(mUninstallDropTarget); |
| |
| dragController.addDropTarget(mInfoDropTarget); |
| dragController.addDropTarget(mDeleteDropTarget); |
| dragController.addDropTarget(mUninstallDropTarget); |
| |
| mInfoDropTarget.setLauncher(launcher); |
| mDeleteDropTarget.setLauncher(launcher); |
| mUninstallDropTarget.setLauncher(launcher); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| |
| // Get the individual components |
| mDropTargetBar = findViewById(R.id.drag_target_bar); |
| mInfoDropTarget = (ButtonDropTarget) mDropTargetBar.findViewById(R.id.info_target_text); |
| mDeleteDropTarget = (ButtonDropTarget) mDropTargetBar.findViewById(R.id.delete_target_text); |
| mUninstallDropTarget = (ButtonDropTarget) mDropTargetBar.findViewById(R.id.uninstall_target_text); |
| |
| mInfoDropTarget.setSearchDropTargetBar(this); |
| mDeleteDropTarget.setSearchDropTargetBar(this); |
| mUninstallDropTarget.setSearchDropTargetBar(this); |
| |
| // Create the various fade animations |
| mDropTargetBar.setAlpha(0f); |
| mDropTargetBarAnimator = new LauncherViewPropertyAnimator(mDropTargetBar); |
| mDropTargetBarAnimator.setInterpolator(sAccelerateInterpolator); |
| mDropTargetBarAnimator.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationStart(Animator animation) { |
| // Ensure that the view is visible for the animation |
| mDropTargetBar.setVisibility(View.VISIBLE); |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| if (mDropTargetBar != null) { |
| AlphaUpdateListener.updateVisibility(mDropTargetBar, mAccessibilityEnabled); |
| } |
| } |
| }); |
| } |
| |
| public void setQsbSearchBar(View qsb) { |
| mQSB = qsb; |
| if (mQSB != null) { |
| // Update the search ber animation |
| mQSBSearchBarAnimator = new LauncherViewPropertyAnimator(mQSB); |
| mQSBSearchBarAnimator.setInterpolator(sAccelerateInterpolator); |
| mQSBSearchBarAnimator.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationStart(Animator animation) { |
| // Ensure that the view is visible for the animation |
| if (mQSB != null) { |
| mQSB.setVisibility(View.VISIBLE); |
| } |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| if (mQSB != null) { |
| AlphaUpdateListener.updateVisibility(mQSB, mAccessibilityEnabled); |
| } |
| } |
| }); |
| } else { |
| mQSBSearchBarAnimator = null; |
| } |
| } |
| |
| /** |
| * 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) { |
| if (mState != newState) { |
| mState = newState; |
| |
| // Update the accessibility state |
| AccessibilityManager am = (AccessibilityManager) |
| getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); |
| mAccessibilityEnabled = am.isEnabled(); |
| |
| animateViewAlpha(mQSBSearchBarAnimator, mQSB, newState.getSearchBarAlpha(), |
| duration); |
| animateViewAlpha(mDropTargetBarAnimator, mDropTargetBar, newState.getDropTargetBarAlpha(), |
| duration); |
| } |
| } |
| |
| /** |
| * Convenience method to animate the alpha of a view using hardware layers. |
| */ |
| private void animateViewAlpha(LauncherViewPropertyAnimator animator, View v, float alpha, |
| int duration) { |
| if (v == null) { |
| return; |
| } |
| |
| animator.cancel(); |
| if (Float.compare(v.getAlpha(), alpha) != 0) { |
| if (duration > 0) { |
| animator.alpha(alpha).withLayer().setDuration(duration).start(); |
| } else { |
| v.setAlpha(alpha); |
| AlphaUpdateListener.updateVisibility(v, mAccessibilityEnabled); |
| } |
| } |
| } |
| |
| /* |
| * DragController.DragListener implementation |
| */ |
| @Override |
| public void onDragStart(DragSource source, Object info, int dragAction) { |
| animateToState(State.DROP_TARGET, DEFAULT_DRAG_FADE_DURATION); |
| } |
| |
| /** |
| * This is called to defer hiding the delete drop target until the drop animation has completed, |
| * instead of hiding immediately when the drag has ended. |
| */ |
| public void deferOnDragEnd() { |
| mDeferOnDragEnd = true; |
| } |
| |
| @Override |
| public void onDragEnd() { |
| if (!mDeferOnDragEnd) { |
| animateToState(State.SEARCH_BAR, DEFAULT_DRAG_FADE_DURATION); |
| } else { |
| mDeferOnDragEnd = false; |
| } |
| } |
| |
| /** |
| * @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; |
| } |
| } |
| |
| public void enableAccessibleDrag(boolean enable) { |
| if (mQSB != null) { |
| mQSB.setVisibility(enable ? View.GONE : View.VISIBLE); |
| } |
| mInfoDropTarget.enableAccessibleDrag(enable); |
| mDeleteDropTarget.enableAccessibleDrag(enable); |
| mUninstallDropTarget.enableAccessibleDrag(enable); |
| } |
| } |