StackView.java revision f04e22571f17bf850ef89adddf2b12171e536619
144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen/* 244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Copyright (C) 2010 The Android Open Source Project 344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Licensed under the Apache License, Version 2.0 (the "License"); 544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * you may not use this file except in compliance with the License. 644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * You may obtain a copy of the License at 744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * http://www.apache.org/licenses/LICENSE-2.0 944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 1044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Unless required by applicable law or agreed to in writing, software 1144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * distributed under the License is distributed on an "AS IS" BASIS, 1244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * See the License for the specific language governing permissions and 1444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * limitations under the License. 1544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 1644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 1744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenpackage android.widget; 1844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 19839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohenimport android.animation.PropertyValuesHolder; 20a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.animation.ObjectAnimator; 2144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.content.Context; 2232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohenimport android.graphics.Bitmap; 23839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohenimport android.graphics.BlurMaskFilter; 2432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohenimport android.graphics.Canvas; 2532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohenimport android.graphics.Matrix; 2632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohenimport android.graphics.Paint; 2732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohenimport android.graphics.PorterDuff; 2832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohenimport android.graphics.PorterDuffXfermode; 2944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.graphics.Rect; 309b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohenimport android.graphics.RectF; 31839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohenimport android.graphics.TableMaskFilter; 3244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.util.AttributeSet; 3344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.util.Log; 3444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.view.MotionEvent; 3544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.view.VelocityTracker; 3644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.view.View; 3744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.view.ViewConfiguration; 3844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.view.ViewGroup; 39839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohenimport android.view.View.MeasureSpec; 40839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohenimport android.view.ViewGroup.LayoutParams; 41b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohenimport android.view.animation.LinearInterpolator; 4244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.widget.RemoteViews.RemoteView; 4344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 4444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen@RemoteView 4544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen/** 4644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * A view that displays its children in a stack and allows users to discretely swipe 4744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * through the children. 4844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 4944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenpublic class StackView extends AdapterViewAnimator { 5044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private final String TAG = "StackView"; 5144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 5244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 5344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Default animation parameters 5444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 553d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen private final int DEFAULT_ANIMATION_DURATION = 400; 56b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen private final int MINIMUM_ANIMATION_DURATION = 50; 5744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 5844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 59839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen * Parameters effecting the perspective visuals 60839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen */ 61839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private static float PERSPECTIVE_SHIFT_FACTOR = 0.12f; 62839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private static float PERSPECTIVE_SCALE_FACTOR = 0.35f; 63839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 64839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen /** 65839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen * Represent the two possible stack modes, one where items slide up, and the other 66839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen * where items slide down. The perspective is also inverted between these two modes. 67839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen */ 68839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private static final int ITEMS_SLIDE_UP = 0; 69839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private static final int ITEMS_SLIDE_DOWN = 1; 70839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 71839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen /** 7244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * These specify the different gesture states 7344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 745b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy private static final int GESTURE_NONE = 0; 755b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy private static final int GESTURE_SLIDE_UP = 1; 765b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy private static final int GESTURE_SLIDE_DOWN = 2; 7744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 7844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 7944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Specifies how far you need to swipe (up or down) before it 8044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * will be consider a completed gesture when you lift your finger 8144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 825b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy private static final float SWIPE_THRESHOLD_RATIO = 0.35f; 835b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy private static final float SLIDE_UP_RATIO = 0.7f; 8444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 8544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 8644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Sentinel value for no current active pointer. 8744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Used by {@link #mActivePointerId}. 8844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 8944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private static final int INVALID_POINTER = -1; 9044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 9144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 92839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen * Number of active views in the stack. One fewer view is actually visible, as one is hidden. 93839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen */ 94839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private static final int NUM_ACTIVE_VIEWS = 5; 95839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 96839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 97839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen /** 9844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * These variables are all related to the current state of touch interaction 9944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * with the stack 10044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 10144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private float mInitialY; 10244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private float mInitialX; 10344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private int mActivePointerId; 10444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private int mYVelocity = 0; 10544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private int mSwipeGestureType = GESTURE_NONE; 10644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private int mViewHeight; 10744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private int mSwipeThreshold; 10844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private int mTouchSlop; 10944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private int mMaximumVelocity; 11044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private VelocityTracker mVelocityTracker; 11144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 1129b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private static HolographicHelper sHolographicHelper; 11332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private ImageView mHighlight; 11432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private StackSlider mStackSlider; 11544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private boolean mFirstLayoutHappened = false; 1169b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private ViewGroup mAncestorContainingAllChildren = null; 1179b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private int mAncestorHeight = 0; 118839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private int mStackMode; 11944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 12044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen public StackView(Context context) { 12144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen super(context); 12244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen initStackView(); 12344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 12444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 12544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen public StackView(Context context, AttributeSet attrs) { 12644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen super(context, attrs); 12744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen initStackView(); 12844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 12944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 13044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private void initStackView() { 131839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen configureViewAnimator(NUM_ACTIVE_VIEWS, NUM_ACTIVE_VIEWS - 2, false); 13244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen setStaticTransformationsEnabled(true); 13344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 134b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen mTouchSlop = configuration.getScaledTouchSlop(); 13544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mMaximumVelocity = configuration.getScaledMaximumFlingVelocity(); 13644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActivePointerId = INVALID_POINTER; 13732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 13832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mHighlight = new ImageView(getContext()); 13932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mHighlight.setLayoutParams(new LayoutParams(mHighlight)); 14032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen addViewInLayout(mHighlight, -1, new LayoutParams(mHighlight)); 14132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mStackSlider = new StackSlider(); 14232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 1439b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (sHolographicHelper == null) { 1449b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen sHolographicHelper = new HolographicHelper(); 14532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 1469b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen setClipChildren(false); 1479b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen setClipToPadding(false); 1481480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen 149839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // This sets the form of the StackView, which is currently to have the perspective-shifted 150839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // views above the active view, and have items slide down when sliding out. The opposite is 151839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // available by using ITEMS_SLIDE_UP. 152839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mStackMode = ITEMS_SLIDE_DOWN; 153839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 1541480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen // This is a flag to indicate the the stack is loading for the first time 1551480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen mWhichChild = -1; 15644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 15744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 15844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 15944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Animate the views between different relative indexes within the {@link AdapterViewAnimator} 16044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 16144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen void animateViewForTransition(int fromIndex, int toIndex, View view) { 16244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (fromIndex == -1 && toIndex == 0) { 16344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Fade item in 16444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (view.getAlpha() == 1) { 16544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen view.setAlpha(0); 16644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 167b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen view.setVisibility(VISIBLE); 168b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 169a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ObjectAnimator<Float> fadeIn = new ObjectAnimator<Float>(DEFAULT_ANIMATION_DURATION, 17044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen view, "alpha", view.getAlpha(), 1.0f); 17144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen fadeIn.start(); 17244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } else if (fromIndex == mNumActiveViews - 1 && toIndex == mNumActiveViews - 2) { 17344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Slide item in 17444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen view.setVisibility(VISIBLE); 17532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 17644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen LayoutParams lp = (LayoutParams) view.getLayoutParams(); 177839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int duration = Math.round(mStackSlider.getDurationForNeutralPosition(mYVelocity)); 17844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 179b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen StackSlider animationSlider = new StackSlider(mStackSlider); 180839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> slideInY = 181839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("YProgress", 0.0f); 182839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> slideInX = 183839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("XProgress", 0.0f); 184a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ObjectAnimator pa = new ObjectAnimator(duration, animationSlider, 185839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen slideInX, slideInY); 186839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen pa.setInterpolator(new LinearInterpolator()); 187839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen pa.start(); 18844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } else if (fromIndex == mNumActiveViews - 2 && toIndex == mNumActiveViews - 1) { 18944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Slide item out 19044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen LayoutParams lp = (LayoutParams) view.getLayoutParams(); 19144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 192839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int duration = Math.round(mStackSlider.getDurationForOffscreenPosition(mYVelocity)); 19344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 194b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen StackSlider animationSlider = new StackSlider(mStackSlider); 195839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> slideOutY = 196839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("YProgress", 1.0f); 197839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> slideOutX = 198839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("XProgress", 0.0f); 199a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ObjectAnimator pa = new ObjectAnimator(duration, animationSlider, 200839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen slideOutX, slideOutY); 201839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen pa.setInterpolator(new LinearInterpolator()); 202839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen pa.start(); 20344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } else if (fromIndex == -1 && toIndex == mNumActiveViews - 1) { 20444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Make sure this view that is "waiting in the wings" is invisible 20544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen view.setAlpha(0.0f); 206b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen view.setVisibility(INVISIBLE); 207b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen LayoutParams lp = (LayoutParams) view.getLayoutParams(); 208b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen lp.setVerticalOffset(-mViewHeight); 20944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } else if (toIndex == -1) { 21044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Fade item out 211a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ObjectAnimator<Float> fadeOut = new ObjectAnimator<Float> 212839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen (DEFAULT_ANIMATION_DURATION, view, "alpha", view.getAlpha(), 0.0f); 21344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen fadeOut.start(); 21444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 215839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 216839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // Implement the faked perspective 217839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (toIndex != -1) { 218f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen transformViewAtIndex(toIndex, view); 219f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen } 220f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen } 221839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 222f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen private void transformViewAtIndex(int index, View view) { 223f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen float maxPerpectiveShift = mViewHeight * PERSPECTIVE_SHIFT_FACTOR; 224839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 225f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen if (index == mNumActiveViews -1) index--; 226839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 227f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen float r = (index * 1.0f) / (mNumActiveViews - 2); 228839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 229f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen float scale = 1 - PERSPECTIVE_SCALE_FACTOR * (1 - r); 230f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen PropertyValuesHolder<Float> scaleX = new PropertyValuesHolder<Float>("scaleX", scale); 231f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen PropertyValuesHolder<Float> scaleY = new PropertyValuesHolder<Float>("scaleY", scale); 232839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 233f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen r = (float) Math.pow(r, 2); 234839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 235f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen int stackDirection = (mStackMode == ITEMS_SLIDE_UP) ? 1 : -1; 236f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen float transY = -stackDirection * r * maxPerpectiveShift + 237f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen stackDirection * (1 - scale) * (mViewHeight / 2.0f); 238f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen 239f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen PropertyValuesHolder<Float> translationY = 240f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen new PropertyValuesHolder<Float>("translationY", transY); 241f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen ObjectAnimator pa = new ObjectAnimator(100, view, scaleX, scaleY, translationY); 242f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen pa.start(); 243f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen } 244f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen 245f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen private void updateChildTransforms() { 246f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen for (int i = 0; i < mNumActiveViews - 1; i++) { 247f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen View v = getViewAtRelativeIndex(i); 248f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen if (v != null) { 249f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen transformViewAtIndex(i, v); 250f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen } 251839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 25244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 25344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 25444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 25544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Apply any necessary tranforms for the child that is being added. 25644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 25744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen void applyTransformForChildAtIndex(View child, int relativeIndex) { 25844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 25944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 26044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen @Override 2619b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen protected void dispatchDraw(Canvas canvas) { 2629b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen super.dispatchDraw(canvas); 2639b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 2649b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 2659b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // TODO: right now, this code walks up the hierarchy as far as needed and disables clipping 2669b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // so that the stack's children can draw outside of the stack's bounds. This is fine within 2679b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // the context of widgets in the launcher, but is destructive in general, as the clipping 2689b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // values are not being reset. For this to be a full framework level widget, we will need 2699b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // framework level support for drawing outside of a parent's bounds. 2709b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private void disableParentalClipping() { 2719b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (mAncestorContainingAllChildren != null) { 2729b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen Log.v(TAG, "Disabling parental clipping."); 2739b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen ViewGroup vg = this; 2749b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen while (vg.getParent() != null && vg.getParent() instanceof ViewGroup) { 2759b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (vg == mAncestorContainingAllChildren) break; 2769b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen vg = (ViewGroup) vg.getParent(); 2779b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen vg.setClipChildren(false); 2789b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen vg.setClipToPadding(false); 27944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 28044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 2819b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 28244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 2839b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private void onLayout() { 28444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (!mFirstLayoutHappened) { 285839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mViewHeight = Math.round(SLIDE_UP_RATIO * getMeasuredHeight()); 286f04e22571f17bf850ef89adddf2b12171e536619Adam Cohen updateChildTransforms(); 287839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mSwipeThreshold = Math.round(SWIPE_THRESHOLD_RATIO * mViewHeight); 28844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mFirstLayoutHappened = true; 28944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 29044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 29144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 29244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen @Override 29344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen public boolean onInterceptTouchEvent(MotionEvent ev) { 29444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int action = ev.getAction(); 29544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen switch(action & MotionEvent.ACTION_MASK) { 29644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_DOWN: { 29744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (mActivePointerId == INVALID_POINTER) { 29844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mInitialX = ev.getX(); 29944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mInitialY = ev.getY(); 30044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActivePointerId = ev.getPointerId(0); 30144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 30244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 30344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 30444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_MOVE: { 30544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int pointerIndex = ev.findPointerIndex(mActivePointerId); 30644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (pointerIndex == INVALID_POINTER) { 30744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // no data for our primary pointer, this shouldn't happen, log it 30844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen Log.d(TAG, "Error: No data for our primary pointer."); 30944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return false; 31044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 31144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float newY = ev.getY(pointerIndex); 31244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float deltaY = newY - mInitialY; 31344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 31432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen beginGestureIfNeeded(deltaY); 31544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 31644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 31744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_POINTER_UP: { 31844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen onSecondaryPointerUp(ev); 31944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 32044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 32144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_UP: 32244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_CANCEL: { 32344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActivePointerId = INVALID_POINTER; 32444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mSwipeGestureType = GESTURE_NONE; 32544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 32644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 32744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 32844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return mSwipeGestureType != GESTURE_NONE; 32944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 33044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 33132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private void beginGestureIfNeeded(float deltaY) { 33232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen if ((int) Math.abs(deltaY) > mTouchSlop && mSwipeGestureType == GESTURE_NONE) { 3333d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen int swipeGestureType = deltaY < 0 ? GESTURE_SLIDE_UP : GESTURE_SLIDE_DOWN; 33432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen cancelLongPress(); 33532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen requestDisallowInterceptTouchEvent(true); 33632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 337839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int activeIndex; 338839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_UP) { 339839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen activeIndex = (swipeGestureType == GESTURE_SLIDE_DOWN) ? 340839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mNumActiveViews - 1 : mNumActiveViews - 2; 341839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 342839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen activeIndex = (swipeGestureType == GESTURE_SLIDE_DOWN) ? 343839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mNumActiveViews - 2 : mNumActiveViews - 1; 344839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 34532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 3463d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (mAdapter == null) return; 3473d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 3483d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (mCurrentWindowStartUnbounded + activeIndex == 0) { 3493d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mStackSlider.setMode(StackSlider.BEGINNING_OF_STACK_MODE); 3503d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } else if (mCurrentWindowStartUnbounded + activeIndex == mAdapter.getCount()) { 3513d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen activeIndex--; 3523d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mStackSlider.setMode(StackSlider.END_OF_STACK_MODE); 3533d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } else { 3543d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mStackSlider.setMode(StackSlider.NORMAL_MODE); 35532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 3563d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 3573d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen View v = getViewAtRelativeIndex(activeIndex); 3583d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (v == null) return; 3593d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 3609b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mHighlight.setImageBitmap(sHolographicHelper.createOutline(v)); 361839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mHighlight.setRotation(v.getRotation()); 362839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mHighlight.setTranslationY(v.getTranslationY()); 3633d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mHighlight.bringToFront(); 3643d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen v.bringToFront(); 3653d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mStackSlider.setView(v); 3663d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 3673d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (swipeGestureType == GESTURE_SLIDE_DOWN) 3683d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen v.setVisibility(VISIBLE); 3693d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 3703d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen // We only register this gesture if we've made it this far without a problem 3713d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mSwipeGestureType = swipeGestureType; 37232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 37332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 37432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 37544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen @Override 37644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen public boolean onTouchEvent(MotionEvent ev) { 37744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int action = ev.getAction(); 37844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int pointerIndex = ev.findPointerIndex(mActivePointerId); 37944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (pointerIndex == INVALID_POINTER) { 38044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // no data for our primary pointer, this shouldn't happen, log it 38144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen Log.d(TAG, "Error: No data for our primary pointer."); 38244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return false; 38344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 38444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 38544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float newY = ev.getY(pointerIndex); 38632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float newX = ev.getX(pointerIndex); 38744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float deltaY = newY - mInitialY; 38832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float deltaX = newX - mInitialX; 38944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (mVelocityTracker == null) { 39044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mVelocityTracker = VelocityTracker.obtain(); 39144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 39244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mVelocityTracker.addMovement(ev); 39344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 39444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen switch (action & MotionEvent.ACTION_MASK) { 39544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_MOVE: { 39632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen beginGestureIfNeeded(deltaY); 39732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 398839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float rx = deltaX / (mViewHeight * 1.0f); 39932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen if (mSwipeGestureType == GESTURE_SLIDE_DOWN) { 400839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float r = (deltaY - mTouchSlop * 1.0f) / mViewHeight * 1.0f; 401839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_DOWN) r = 1 - r; 40232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mStackSlider.setYProgress(1 - r); 40332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mStackSlider.setXProgress(rx); 40432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen return true; 40532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } else if (mSwipeGestureType == GESTURE_SLIDE_UP) { 406839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float r = -(deltaY + mTouchSlop * 1.0f) / mViewHeight * 1.0f; 407839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_DOWN) r = 1 - r; 40832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mStackSlider.setYProgress(r); 40932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mStackSlider.setXProgress(rx); 41032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen return true; 41144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 41244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 41344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 41444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_UP: { 41544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen handlePointerUp(ev); 41644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 41744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 41844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_POINTER_UP: { 41944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen onSecondaryPointerUp(ev); 42044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 42144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 42244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_CANCEL: { 42344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActivePointerId = INVALID_POINTER; 42444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mSwipeGestureType = GESTURE_NONE; 42544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 42644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 42744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 42844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return true; 42944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 43044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 43144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private final Rect touchRect = new Rect(); 43244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private void onSecondaryPointerUp(MotionEvent ev) { 43344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen final int activePointerIndex = ev.getActionIndex(); 43444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen final int pointerId = ev.getPointerId(activePointerIndex); 43544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (pointerId == mActivePointerId) { 43644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 43744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int activeViewIndex = (mSwipeGestureType == GESTURE_SLIDE_DOWN) ? mNumActiveViews - 1 43844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen : mNumActiveViews - 2; 43944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 44044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen View v = getViewAtRelativeIndex(activeViewIndex); 44144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (v == null) return; 44244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 44344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Our primary pointer has gone up -- let's see if we can find 44444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // another pointer on the view. If so, then we should replace 44544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // our primary pointer with this new pointer and adjust things 44644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // so that the view doesn't jump 44744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen for (int index = 0; index < ev.getPointerCount(); index++) { 44844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (index != activePointerIndex) { 44944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 45044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float x = ev.getX(index); 45144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float y = ev.getY(index); 45244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 45344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen touchRect.set(v.getLeft(), v.getTop(), v.getRight(), v.getBottom()); 4545b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy if (touchRect.contains(Math.round(x), Math.round(y))) { 45544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float oldX = ev.getX(activePointerIndex); 45644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float oldY = ev.getY(activePointerIndex); 45744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 45844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // adjust our frame of reference to avoid a jump 45944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mInitialY += (y - oldY); 46044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mInitialX += (x - oldX); 46144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 46244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActivePointerId = ev.getPointerId(index); 46344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (mVelocityTracker != null) { 46444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mVelocityTracker.clear(); 46544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 46644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // ok, we're good, we found a new pointer which is touching the active view 46744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return; 46844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 46944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 47044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 47144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // if we made it this far, it means we didn't find a satisfactory new pointer :(, 4723d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen // so end the gesture 47344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen handlePointerUp(ev); 47444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 47544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 47644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 47744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private void handlePointerUp(MotionEvent ev) { 47844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int pointerIndex = ev.findPointerIndex(mActivePointerId); 47944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float newY = ev.getY(pointerIndex); 48044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int deltaY = (int) (newY - mInitialY); 48144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 4823d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (mVelocityTracker != null) { 4833d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mVelocityTracker.computeCurrentVelocity(1000, mMaximumVelocity); 4843d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mYVelocity = (int) mVelocityTracker.getYVelocity(mActivePointerId); 4853d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 48644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 48744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (mVelocityTracker != null) { 48844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mVelocityTracker.recycle(); 48944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mVelocityTracker = null; 49044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 49144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 4923d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (deltaY > mSwipeThreshold && mSwipeGestureType == GESTURE_SLIDE_DOWN 4933d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen && mStackSlider.mMode == StackSlider.NORMAL_MODE) { 49444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Swipe threshold exceeded, swipe down 495839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_UP) { 496839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen showNext(); 497839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 498839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen showPrevious(); 499839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 50032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mHighlight.bringToFront(); 5013d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } else if (deltaY < -mSwipeThreshold && mSwipeGestureType == GESTURE_SLIDE_UP 5023d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen && mStackSlider.mMode == StackSlider.NORMAL_MODE) { 50344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Swipe threshold exceeded, swipe up 504839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_UP) { 505839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen showPrevious(); 506839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 507839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen showNext(); 508839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 509839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 51032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mHighlight.bringToFront(); 511839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else if (mSwipeGestureType == GESTURE_SLIDE_UP ) { 51244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Didn't swipe up far enough, snap back down 513839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int duration; 514839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float finalYProgress = (mStackMode == ITEMS_SLIDE_DOWN) ? 1 : 0; 515839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_UP || mStackSlider.mMode != StackSlider.NORMAL_MODE) { 516839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen duration = Math.round(mStackSlider.getDurationForNeutralPosition()); 517839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 518839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen duration = Math.round(mStackSlider.getDurationForOffscreenPosition()); 519839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 52032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 521b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen StackSlider animationSlider = new StackSlider(mStackSlider); 522839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> snapBackY = 523839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("YProgress", finalYProgress); 524839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> snapBackX = 525839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("XProgress", 0.0f); 526a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ObjectAnimator pa = new ObjectAnimator(duration, animationSlider, 527839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen snapBackX, snapBackY); 528839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen pa.setInterpolator(new LinearInterpolator()); 529839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen pa.start(); 53032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } else if (mSwipeGestureType == GESTURE_SLIDE_DOWN) { 53144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Didn't swipe down far enough, snap back up 532839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float finalYProgress = (mStackMode == ITEMS_SLIDE_DOWN) ? 0 : 1; 533839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int duration; 534839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_DOWN || mStackSlider.mMode != StackSlider.NORMAL_MODE) { 535839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen duration = Math.round(mStackSlider.getDurationForNeutralPosition()); 536839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 537839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen duration = Math.round(mStackSlider.getDurationForOffscreenPosition()); 538839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 5393d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 540b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen StackSlider animationSlider = new StackSlider(mStackSlider); 541839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> snapBackY = 542839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("YProgress", finalYProgress); 543839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> snapBackX = 544839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("XProgress", 0.0f); 545a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ObjectAnimator pa = new ObjectAnimator(duration, animationSlider, 546839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen snapBackX, snapBackY); 547839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen pa.start(); 54844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 54944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 55044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActivePointerId = INVALID_POINTER; 55144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mSwipeGestureType = GESTURE_NONE; 55232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 55332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 55432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private class StackSlider { 55532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen View mView; 55632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float mYProgress; 55732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float mXProgress; 55832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 5593d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen static final int NORMAL_MODE = 0; 5603d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen static final int BEGINNING_OF_STACK_MODE = 1; 5613d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen static final int END_OF_STACK_MODE = 2; 5623d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 5633d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen int mMode = NORMAL_MODE; 5643d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 565b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public StackSlider() { 566b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 567b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 568b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public StackSlider(StackSlider copy) { 569b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen mView = copy.mView; 570b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen mYProgress = copy.mYProgress; 571b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen mXProgress = copy.mXProgress; 5723d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mMode = copy.mMode; 573b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 574b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 57532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private float cubic(float r) { 576839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return (float) (Math.pow(2 * r - 1, 3) + 1) / 2.0f; 57732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 57832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 57932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private float highlightAlphaInterpolator(float r) { 58032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float pivot = 0.4f; 58132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen if (r < pivot) { 582839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return 0.85f * cubic(r / pivot); 58332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } else { 584839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return 0.85f * cubic(1 - (r - pivot) / (1 - pivot)); 58532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 58632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 58732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 58832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private float viewAlphaInterpolator(float r) { 58932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float pivot = 0.3f; 59032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen if (r > pivot) { 591839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return (r - pivot) / (1 - pivot); 59232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } else { 59332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen return 0; 59432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 59532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 59632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 597b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen private float rotationInterpolator(float r) { 598b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen float pivot = 0.2f; 599b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen if (r < pivot) { 600b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen return 0; 601b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } else { 602839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return (r - pivot) / (1 - pivot); 603b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 604b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 605b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 60632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen void setView(View v) { 60732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mView = v; 60832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 60932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 61032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen public void setYProgress(float r) { 61132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen // enforce r between 0 and 1 61232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen r = Math.min(1.0f, r); 61332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen r = Math.max(0, r); 61432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 61532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mYProgress = r; 61632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen final LayoutParams viewLp = (LayoutParams) mView.getLayoutParams(); 61732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen final LayoutParams highlightLp = (LayoutParams) mHighlight.getLayoutParams(); 61832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 619839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int stackDirection = (mStackMode == ITEMS_SLIDE_UP) ? 1 : -1; 620839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 6213d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen switch (mMode) { 6223d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen case NORMAL_MODE: 623839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen viewLp.setVerticalOffset(Math.round(-r * stackDirection * mViewHeight)); 624839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen highlightLp.setVerticalOffset(Math.round(-r * stackDirection * mViewHeight)); 6253d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mHighlight.setAlpha(highlightAlphaInterpolator(r)); 6263d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 627839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float alpha = viewAlphaInterpolator(1 - r); 6283d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 6293d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen // We make sure that views which can't be seen (have 0 alpha) are also invisible 6303d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen // so that they don't interfere with click events. 6313d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (mView.getAlpha() == 0 && alpha != 0 && mView.getVisibility() != VISIBLE) { 6323d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mView.setVisibility(VISIBLE); 6333d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } else if (alpha == 0 && mView.getAlpha() != 0 6343d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen && mView.getVisibility() == VISIBLE) { 6353d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mView.setVisibility(INVISIBLE); 6363d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 637b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 6383d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mView.setAlpha(alpha); 639839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mView.setRotationX(stackDirection * 90.0f * rotationInterpolator(r)); 640839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mHighlight.setRotationX(stackDirection * 90.0f * rotationInterpolator(r)); 6413d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen break; 6423d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen case BEGINNING_OF_STACK_MODE: 643839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen r = r * 0.2f; 644839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen viewLp.setVerticalOffset(Math.round(-stackDirection * r * mViewHeight)); 645839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen highlightLp.setVerticalOffset(Math.round(-stackDirection * r * mViewHeight)); 6463d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mHighlight.setAlpha(highlightAlphaInterpolator(r)); 6473d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen break; 6483d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen case END_OF_STACK_MODE: 649839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen r = (1-r) * 0.2f; 650839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen viewLp.setVerticalOffset(Math.round(stackDirection * r * mViewHeight)); 651839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen highlightLp.setVerticalOffset(Math.round(stackDirection * r * mViewHeight)); 6523d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mHighlight.setAlpha(highlightAlphaInterpolator(r)); 6533d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen break; 654b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 65532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 65632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 65732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen public void setXProgress(float r) { 65832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen // enforce r between 0 and 1 6593d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen r = Math.min(2.0f, r); 6603d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen r = Math.max(-2.0f, r); 66132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 66232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mXProgress = r; 66332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 66432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen final LayoutParams viewLp = (LayoutParams) mView.getLayoutParams(); 66532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen final LayoutParams highlightLp = (LayoutParams) mHighlight.getLayoutParams(); 66632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 6673d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen r *= 0.2f; 668839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen viewLp.setHorizontalOffset(Math.round(r * mViewHeight)); 669839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen highlightLp.setHorizontalOffset(Math.round(r * mViewHeight)); 67032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 67132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 6723d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen void setMode(int mode) { 6733d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mMode = mode; 6743d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 6753d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 6763d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen float getDurationForNeutralPosition() { 677839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return getDuration(false, 0); 6783d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 6793d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 6803d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen float getDurationForOffscreenPosition() { 681839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return getDuration(true, 0); 682839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 683839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 684839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float getDurationForNeutralPosition(float velocity) { 685839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return getDuration(false, velocity); 686839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 687839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 688839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float getDurationForOffscreenPosition(float velocity) { 689839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return getDuration(true, velocity); 6903d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 6913d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 692839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private float getDuration(boolean invert, float velocity) { 6933d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (mView != null) { 6943d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen final LayoutParams viewLp = (LayoutParams) mView.getLayoutParams(); 6953d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 696839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float d = (float) Math.sqrt(Math.pow(viewLp.horizontalOffset, 2) + 697839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Math.pow(viewLp.verticalOffset, 2)); 6983d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen float maxd = (float) Math.sqrt(Math.pow(mViewHeight, 2) + 699839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Math.pow(0.4f * mViewHeight, 2)); 700839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 701839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (velocity == 0) { 702839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return (invert ? (1 - d / maxd) : d / maxd) * DEFAULT_ANIMATION_DURATION; 703839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 704839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float duration = invert ? d / Math.abs(velocity) : 705839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen (maxd - d) / Math.abs(velocity); 706839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (duration < MINIMUM_ANIMATION_DURATION || 707839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen duration > DEFAULT_ANIMATION_DURATION) { 708839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return getDuration(invert, 0); 709839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 710839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return duration; 711839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 712839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 7133d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 7143d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen return 0; 7153d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 7163d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 717839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen public float getYProgress() { 71832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen return mYProgress; 71932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 72032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 721839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen public float getXProgress() { 72232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen return mXProgress; 72332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 72444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 72544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 72644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen @Override 72744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen public void onRemoteAdapterConnected() { 72844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen super.onRemoteAdapterConnected(); 7291480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen // On first run, we want to set the stack to the end. 7301480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen if (mAdapter != null && mWhichChild == -1) { 7311480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen mWhichChild = mAdapter.getCount() - 1; 7321480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen } 733b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen setDisplayedChild(mWhichChild); 73444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 73532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 7369b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams createOrReuseLayoutParams(View v) { 7379b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen final ViewGroup.LayoutParams currentLp = v.getLayoutParams(); 7389b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (currentLp instanceof LayoutParams) { 7399b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams lp = (LayoutParams) currentLp; 7409b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen lp.setHorizontalOffset(0); 7419b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen lp.setVerticalOffset(0); 742839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen lp.width = 0; 743839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen lp.width = 0; 7449b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen return lp; 7459b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 7469b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen return new LayoutParams(v); 74732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 74832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 7499b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen @Override 7509b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 7519b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen boolean dataChanged = mDataChanged; 7529b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (dataChanged) { 7539b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen handleDataChanged(); 7549b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7559b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // if the data changes, mWhichChild might be out of the bounds of the adapter 7569b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // in this case, we reset mWhichChild to the beginning 7579b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (mWhichChild >= mAdapter.getCount()) 7589b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mWhichChild = 0; 7599b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7609b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen showOnly(mWhichChild, true, true); 7619b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 7629b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7639b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen final int childCount = getChildCount(); 7649b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen for (int i = 0; i < childCount; i++) { 7659b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen final View child = getChildAt(i); 7669b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7679b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int childRight = mPaddingLeft + child.getMeasuredWidth(); 7689b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int childBottom = mPaddingTop + child.getMeasuredHeight(); 7699b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams lp = (LayoutParams) child.getLayoutParams(); 7709b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7719b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen child.layout(mPaddingLeft + lp.horizontalOffset, mPaddingTop + lp.verticalOffset, 7729b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen childRight + lp.horizontalOffset, childBottom + lp.verticalOffset); 7739b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7749b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 7759b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7769b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mDataChanged = false; 7779b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen onLayout(); 7789b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 7799b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 780839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private void measureChildren() { 781839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int count = getChildCount(); 782839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int childWidth = mMeasuredWidth - mPaddingLeft - mPaddingRight; 783839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int childHeight = Math.round(mMeasuredHeight*(1-PERSPECTIVE_SHIFT_FACTOR)) 784839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen - mPaddingTop - mPaddingBottom; 785839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 786839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen for (int i = 0; i < count; i++) { 787839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final View child = getChildAt(i); 788839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen child.measure(MeasureSpec.makeMeasureSpec(childWidth, MeasureSpec.EXACTLY), 789839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen MeasureSpec.makeMeasureSpec(childHeight, MeasureSpec.EXACTLY)); 790839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 791839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 792839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 793839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen @Override 794839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 795839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec); 796839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec); 797839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec); 798839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec); 799839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 800839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen boolean haveChildRefSize = (mReferenceChildWidth != -1 && mReferenceChildHeight != -1); 801839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 802839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // We need to deal with the case where our parent hasn't told us how 803839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // big we should be. In this case we should 804839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float factor = 1/(1 - PERSPECTIVE_SHIFT_FACTOR); 805839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (heightSpecMode == MeasureSpec.UNSPECIFIED) { 806839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen heightSpecSize = haveChildRefSize ? 807839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Math.round(mReferenceChildHeight * (1 + factor)) + 808839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingTop + mPaddingBottom : 0; 809839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else if (heightSpecMode == MeasureSpec.AT_MOST) { 810839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen heightSpecSize = haveChildRefSize ? Math.min( 811839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Math.round(mReferenceChildHeight * (1 + factor)) + mPaddingTop + 812839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingBottom, heightSpecSize) : 0; 813839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 814839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 815839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (widthSpecMode == MeasureSpec.UNSPECIFIED) { 816839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen widthSpecSize = haveChildRefSize ? mReferenceChildWidth + mPaddingLeft + 817839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingRight : 0; 818839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else if (heightSpecMode == MeasureSpec.AT_MOST) { 819839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen widthSpecSize = haveChildRefSize ? Math.min(mReferenceChildWidth + mPaddingLeft + 820839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingRight, widthSpecSize) : 0; 821839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 822839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 823839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen setMeasuredDimension(widthSpecSize, heightSpecSize); 824839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen measureChildren(); 825839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 826839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 8279b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen class LayoutParams extends ViewGroup.LayoutParams { 8289b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int horizontalOffset; 8299b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int verticalOffset; 8309b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen View mView; 8319b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8329b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams(View view) { 8339b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen super(0, 0); 834839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen width = 0; 835839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen height = 0; 8369b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen horizontalOffset = 0; 8379b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen verticalOffset = 0; 8389b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mView = view; 8399b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 8409b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8419b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams(Context c, AttributeSet attrs) { 8429b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen super(c, attrs); 8439b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen horizontalOffset = 0; 8449b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen verticalOffset = 0; 845839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen width = 0; 846839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen height = 0; 847b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 848b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 8499b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private Rect parentRect = new Rect(); 8509b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen void invalidateGlobalRegion(View v, Rect r) { 8519b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen View p = v; 8529b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (!(v.getParent() != null && v.getParent() instanceof View)) return; 8539b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8549b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen View gp = (View) v.getParent(); 8559b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen boolean firstPass = true; 8569b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen parentRect.set(0, 0, 0, 0); 8579b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int depth = 0; 8589b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen while (gp.getParent() != null && gp.getParent() instanceof View 8599b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen && !parentRect.contains(r)) { 8609b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (!firstPass) { 8619b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen r.offset(p.getLeft() - gp.getScrollX(), p.getTop() - gp.getScrollY()); 8629b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen depth++; 8639b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 8649b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen firstPass = false; 8659b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen p = (View) p.getParent(); 8669b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen gp = (View) p.getParent(); 8679b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen parentRect.set(p.getLeft() - gp.getScrollX(), p.getTop() - gp.getScrollY(), 8689b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen p.getRight() - gp.getScrollX(), p.getBottom() - gp.getScrollY()); 869839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 870839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // TODO: we need to stop early here if we've hit the edge of the screen 871839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // so as to prevent us from walking too high in the hierarchy. A lot of this 872839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // code might become a lot more straightforward. 8739b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 8749b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8759b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (depth > mAncestorHeight) { 8769b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mAncestorContainingAllChildren = (ViewGroup) p; 8779b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mAncestorHeight = depth; 8789b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen disableParentalClipping(); 8799b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 8809b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8819b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen p.invalidate(r.left, r.top, r.right, r.bottom); 8829b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 88332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 8849b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private Rect invalidateRect = new Rect(); 8859b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private RectF invalidateRectf = new RectF(); 886a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // This is public so that ObjectAnimator can access it 8879b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen public void setVerticalOffset(int newVerticalOffset) { 8889b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int offsetDelta = newVerticalOffset - verticalOffset; 8899b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen verticalOffset = newVerticalOffset; 89032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 8919b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (mView != null) { 8929b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mView.requestLayout(); 8939b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int top = Math.min(mView.getTop() + offsetDelta, mView.getTop()); 8949b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int bottom = Math.max(mView.getBottom() + offsetDelta, mView.getBottom()); 8959b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8969b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.set(mView.getLeft(), top, mView.getRight(), bottom); 8979b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8989b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen float xoffset = -invalidateRectf.left; 8999b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen float yoffset = -invalidateRectf.top; 9009b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.offset(xoffset, yoffset); 9019b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mView.getMatrix().mapRect(invalidateRectf); 9029b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.offset(-xoffset, -yoffset); 9039b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRect.set((int) Math.floor(invalidateRectf.left), 9049b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.floor(invalidateRectf.top), 9059b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.ceil(invalidateRectf.right), 9069b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.ceil(invalidateRectf.bottom)); 9079b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9089b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateGlobalRegion(mView, invalidateRect); 9099b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9109b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9119b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9129b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen public void setHorizontalOffset(int newHorizontalOffset) { 9139b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int offsetDelta = newHorizontalOffset - horizontalOffset; 9149b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen horizontalOffset = newHorizontalOffset; 9159b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9169b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (mView != null) { 9179b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mView.requestLayout(); 9189b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int left = Math.min(mView.getLeft() + offsetDelta, mView.getLeft()); 9199b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int right = Math.max(mView.getRight() + offsetDelta, mView.getRight()); 9209b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.set(left, mView.getTop(), right, mView.getBottom()); 9219b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9229b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen float xoffset = -invalidateRectf.left; 9239b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen float yoffset = -invalidateRectf.top; 9249b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.offset(xoffset, yoffset); 9259b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mView.getMatrix().mapRect(invalidateRectf); 9269b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.offset(-xoffset, -yoffset); 9279b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9289b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRect.set((int) Math.floor(invalidateRectf.left), 9299b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.floor(invalidateRectf.top), 9309b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.ceil(invalidateRectf.right), 9319b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.ceil(invalidateRectf.bottom)); 9329b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9339b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateGlobalRegion(mView, invalidateRect); 9349b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9359b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 93632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 93732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 9389b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private static class HolographicHelper { 9399b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private final Paint mHolographicPaint = new Paint(); 9409b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private final Paint mErasePaint = new Paint(); 941839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private final Paint mBlurPaint = new Paint(); 94232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 9439b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen HolographicHelper() { 9449b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen initializePaints(); 9459b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9469b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9479b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen void initializePaints() { 9489b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mHolographicPaint.setColor(0xff6699ff); 9499b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mHolographicPaint.setFilterBitmap(true); 950839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mHolographicPaint.setMaskFilter(TableMaskFilter.CreateClipTable(0, 30)); 9519b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mErasePaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT)); 9529b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mErasePaint.setFilterBitmap(true); 953839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mBlurPaint.setMaskFilter(new BlurMaskFilter(2, BlurMaskFilter.Blur.NORMAL)); 9549b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9559b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9569b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen Bitmap createOutline(View v) { 9579b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (v.getMeasuredWidth() == 0 || v.getMeasuredHeight() == 0) { 9589b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen return null; 9599b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9609b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9619b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen Bitmap bitmap = Bitmap.createBitmap(v.getMeasuredWidth(), v.getMeasuredHeight(), 9629b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen Bitmap.Config.ARGB_8888); 9639b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen Canvas canvas = new Canvas(bitmap); 96432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 9659b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen float rotationX = v.getRotationX(); 966839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float rotation = v.getRotation(); 967839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float translationY = v.getTranslationY(); 9689b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen v.setRotationX(0); 969839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen v.setRotation(0); 970839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen v.setTranslationY(0); 9719b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen canvas.concat(v.getMatrix()); 9729b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen v.draw(canvas); 9739b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen v.setRotationX(rotationX); 974839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen v.setRotation(rotation); 975839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen v.setTranslationY(translationY); 976839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen canvas.setMatrix(id); 9779b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9789b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen drawOutline(canvas, bitmap); 9799b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen return bitmap; 9809b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9819b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9829b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen final Matrix id = new Matrix(); 9839b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen void drawOutline(Canvas dest, Bitmap src) { 984839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int[] xy = new int[2]; 985839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Bitmap mask = src.extractAlpha(mBlurPaint, xy); 986839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Canvas maskCanvas = new Canvas(mask); 987839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen maskCanvas.drawBitmap(src, -xy[0], -xy[1], mErasePaint); 9889b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen dest.drawColor(0, PorterDuff.Mode.CLEAR); 9899b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen dest.setMatrix(id); 990839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen dest.drawBitmap(mask, xy[0], xy[1], mHolographicPaint); 9919b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mask.recycle(); 9929b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 99332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 99444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen} 995