StackView.java revision 839f4a54e5a6fe602dbc5998b01412d809eba722
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 1944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.animation.PropertyAnimator; 20839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohenimport android.animation.PropertyValuesHolder; 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 169839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyAnimator<Float> fadeIn = new PropertyAnimator<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); 184839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyAnimator pa = new PropertyAnimator(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); 199839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyAnimator pa = new PropertyAnimator(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 211839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyAnimator<Float> fadeOut = new PropertyAnimator<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) { 218839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float maxPerpectiveShift = mViewHeight * PERSPECTIVE_SHIFT_FACTOR; 219839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int index = toIndex; 220839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 221839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (toIndex == mNumActiveViews -1) index--; 222839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 223839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float r = (index * 1.0f) / (mNumActiveViews - 2); 224839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 225839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float scale = 1 - PERSPECTIVE_SCALE_FACTOR * (1 - r); 226839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> scaleX = new PropertyValuesHolder<Float>("scaleX", scale); 227839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> scaleY = new PropertyValuesHolder<Float>("scaleY", scale); 228839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 229839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen r = (float) Math.pow(r, 2); 230839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 231839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int stackDirection = (mStackMode == ITEMS_SLIDE_UP) ? 1 : -1; 232839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float transY = -stackDirection * r * maxPerpectiveShift + 233839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen stackDirection * (1 - scale) * (mViewHeight / 2.0f); 234839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 235839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> translationY = 236839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("translationY", transY); 237839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyAnimator pa = new PropertyAnimator(100, view, scaleX, scaleY, translationY); 238839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen pa.start(); 239839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 24044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 24144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 24244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 24344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Apply any necessary tranforms for the child that is being added. 24444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 24544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen void applyTransformForChildAtIndex(View child, int relativeIndex) { 24644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 24744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 24844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen @Override 2499b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen protected void dispatchDraw(Canvas canvas) { 2509b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen super.dispatchDraw(canvas); 2519b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 2529b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 2539b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // TODO: right now, this code walks up the hierarchy as far as needed and disables clipping 2549b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // so that the stack's children can draw outside of the stack's bounds. This is fine within 2559b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // the context of widgets in the launcher, but is destructive in general, as the clipping 2569b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // values are not being reset. For this to be a full framework level widget, we will need 2579b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // framework level support for drawing outside of a parent's bounds. 2589b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private void disableParentalClipping() { 2599b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (mAncestorContainingAllChildren != null) { 2609b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen Log.v(TAG, "Disabling parental clipping."); 2619b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen ViewGroup vg = this; 2629b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen while (vg.getParent() != null && vg.getParent() instanceof ViewGroup) { 2639b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (vg == mAncestorContainingAllChildren) break; 2649b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen vg = (ViewGroup) vg.getParent(); 2659b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen vg.setClipChildren(false); 2669b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen vg.setClipToPadding(false); 26744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 26844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 2699b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 27044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 2719b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private void onLayout() { 27244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (!mFirstLayoutHappened) { 273839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mViewHeight = Math.round(SLIDE_UP_RATIO * getMeasuredHeight()); 274839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mSwipeThreshold = Math.round(SWIPE_THRESHOLD_RATIO * mViewHeight); 27544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mFirstLayoutHappened = true; 27644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 27744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 27844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 27944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen @Override 28044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen public boolean onInterceptTouchEvent(MotionEvent ev) { 28144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int action = ev.getAction(); 28244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen switch(action & MotionEvent.ACTION_MASK) { 28344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_DOWN: { 28444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (mActivePointerId == INVALID_POINTER) { 28544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mInitialX = ev.getX(); 28644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mInitialY = ev.getY(); 28744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActivePointerId = ev.getPointerId(0); 28844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 28944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 29044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 29144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_MOVE: { 29244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int pointerIndex = ev.findPointerIndex(mActivePointerId); 29344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (pointerIndex == INVALID_POINTER) { 29444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // no data for our primary pointer, this shouldn't happen, log it 29544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen Log.d(TAG, "Error: No data for our primary pointer."); 29644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return false; 29744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 29844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float newY = ev.getY(pointerIndex); 29944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float deltaY = newY - mInitialY; 30044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 30132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen beginGestureIfNeeded(deltaY); 30244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 30344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 30444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_POINTER_UP: { 30544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen onSecondaryPointerUp(ev); 30644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 30744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 30844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_UP: 30944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_CANCEL: { 31044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActivePointerId = INVALID_POINTER; 31144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mSwipeGestureType = GESTURE_NONE; 31244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 31344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 31444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 31544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return mSwipeGestureType != GESTURE_NONE; 31644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 31744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 31832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private void beginGestureIfNeeded(float deltaY) { 31932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen if ((int) Math.abs(deltaY) > mTouchSlop && mSwipeGestureType == GESTURE_NONE) { 3203d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen int swipeGestureType = deltaY < 0 ? GESTURE_SLIDE_UP : GESTURE_SLIDE_DOWN; 32132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen cancelLongPress(); 32232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen requestDisallowInterceptTouchEvent(true); 32332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 324839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int activeIndex; 325839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_UP) { 326839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen activeIndex = (swipeGestureType == GESTURE_SLIDE_DOWN) ? 327839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mNumActiveViews - 1 : mNumActiveViews - 2; 328839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 329839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen activeIndex = (swipeGestureType == GESTURE_SLIDE_DOWN) ? 330839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mNumActiveViews - 2 : mNumActiveViews - 1; 331839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 33232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 3333d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (mAdapter == null) return; 3343d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 3353d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (mCurrentWindowStartUnbounded + activeIndex == 0) { 3363d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mStackSlider.setMode(StackSlider.BEGINNING_OF_STACK_MODE); 3373d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } else if (mCurrentWindowStartUnbounded + activeIndex == mAdapter.getCount()) { 3383d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen activeIndex--; 3393d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mStackSlider.setMode(StackSlider.END_OF_STACK_MODE); 3403d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } else { 3413d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mStackSlider.setMode(StackSlider.NORMAL_MODE); 34232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 3433d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 3443d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen View v = getViewAtRelativeIndex(activeIndex); 3453d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (v == null) return; 3463d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 3479b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mHighlight.setImageBitmap(sHolographicHelper.createOutline(v)); 348839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mHighlight.setRotation(v.getRotation()); 349839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mHighlight.setTranslationY(v.getTranslationY()); 3503d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mHighlight.bringToFront(); 3513d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen v.bringToFront(); 3523d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mStackSlider.setView(v); 3533d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 3543d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (swipeGestureType == GESTURE_SLIDE_DOWN) 3553d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen v.setVisibility(VISIBLE); 3563d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 3573d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen // We only register this gesture if we've made it this far without a problem 3583d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mSwipeGestureType = swipeGestureType; 35932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 36032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 36132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 36244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen @Override 36344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen public boolean onTouchEvent(MotionEvent ev) { 36444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int action = ev.getAction(); 36544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int pointerIndex = ev.findPointerIndex(mActivePointerId); 36644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (pointerIndex == INVALID_POINTER) { 36744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // no data for our primary pointer, this shouldn't happen, log it 36844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen Log.d(TAG, "Error: No data for our primary pointer."); 36944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return false; 37044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 37144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 37244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float newY = ev.getY(pointerIndex); 37332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float newX = ev.getX(pointerIndex); 37444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float deltaY = newY - mInitialY; 37532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float deltaX = newX - mInitialX; 37644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (mVelocityTracker == null) { 37744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mVelocityTracker = VelocityTracker.obtain(); 37844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 37944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mVelocityTracker.addMovement(ev); 38044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 38144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen switch (action & MotionEvent.ACTION_MASK) { 38244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_MOVE: { 38332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen beginGestureIfNeeded(deltaY); 38432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 385839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float rx = deltaX / (mViewHeight * 1.0f); 38632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen if (mSwipeGestureType == GESTURE_SLIDE_DOWN) { 387839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float r = (deltaY - mTouchSlop * 1.0f) / mViewHeight * 1.0f; 388839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_DOWN) r = 1 - r; 38932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mStackSlider.setYProgress(1 - r); 39032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mStackSlider.setXProgress(rx); 39132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen return true; 39232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } else if (mSwipeGestureType == GESTURE_SLIDE_UP) { 393839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float r = -(deltaY + mTouchSlop * 1.0f) / mViewHeight * 1.0f; 394839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_DOWN) r = 1 - r; 39532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mStackSlider.setYProgress(r); 39632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mStackSlider.setXProgress(rx); 39732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen return true; 39844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 39944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 40044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 40144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_UP: { 40244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen handlePointerUp(ev); 40344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 40444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 40544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_POINTER_UP: { 40644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen onSecondaryPointerUp(ev); 40744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 40844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 40944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen case MotionEvent.ACTION_CANCEL: { 41044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActivePointerId = INVALID_POINTER; 41144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mSwipeGestureType = GESTURE_NONE; 41244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen break; 41344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 41444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 41544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return true; 41644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 41744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 41844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private final Rect touchRect = new Rect(); 41944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private void onSecondaryPointerUp(MotionEvent ev) { 42044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen final int activePointerIndex = ev.getActionIndex(); 42144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen final int pointerId = ev.getPointerId(activePointerIndex); 42244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (pointerId == mActivePointerId) { 42344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 42444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int activeViewIndex = (mSwipeGestureType == GESTURE_SLIDE_DOWN) ? mNumActiveViews - 1 42544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen : mNumActiveViews - 2; 42644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 42744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen View v = getViewAtRelativeIndex(activeViewIndex); 42844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (v == null) return; 42944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 43044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Our primary pointer has gone up -- let's see if we can find 43144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // another pointer on the view. If so, then we should replace 43244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // our primary pointer with this new pointer and adjust things 43344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // so that the view doesn't jump 43444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen for (int index = 0; index < ev.getPointerCount(); index++) { 43544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (index != activePointerIndex) { 43644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 43744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float x = ev.getX(index); 43844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float y = ev.getY(index); 43944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 44044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen touchRect.set(v.getLeft(), v.getTop(), v.getRight(), v.getBottom()); 4415b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy if (touchRect.contains(Math.round(x), Math.round(y))) { 44244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float oldX = ev.getX(activePointerIndex); 44344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float oldY = ev.getY(activePointerIndex); 44444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 44544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // adjust our frame of reference to avoid a jump 44644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mInitialY += (y - oldY); 44744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mInitialX += (x - oldX); 44844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 44944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActivePointerId = ev.getPointerId(index); 45044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (mVelocityTracker != null) { 45144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mVelocityTracker.clear(); 45244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 45344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // ok, we're good, we found a new pointer which is touching the active view 45444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return; 45544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 45644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 45744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 45844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // if we made it this far, it means we didn't find a satisfactory new pointer :(, 4593d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen // so end the gesture 46044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen handlePointerUp(ev); 46144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 46244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 46344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 46444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private void handlePointerUp(MotionEvent ev) { 46544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int pointerIndex = ev.findPointerIndex(mActivePointerId); 46644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen float newY = ev.getY(pointerIndex); 46744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int deltaY = (int) (newY - mInitialY); 46844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 4693d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (mVelocityTracker != null) { 4703d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mVelocityTracker.computeCurrentVelocity(1000, mMaximumVelocity); 4713d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mYVelocity = (int) mVelocityTracker.getYVelocity(mActivePointerId); 4723d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 47344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 47444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (mVelocityTracker != null) { 47544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mVelocityTracker.recycle(); 47644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mVelocityTracker = null; 47744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 47844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 4793d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (deltaY > mSwipeThreshold && mSwipeGestureType == GESTURE_SLIDE_DOWN 4803d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen && mStackSlider.mMode == StackSlider.NORMAL_MODE) { 48144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Swipe threshold exceeded, swipe down 482839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_UP) { 483839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen showNext(); 484839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 485839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen showPrevious(); 486839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 48732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mHighlight.bringToFront(); 4883d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } else if (deltaY < -mSwipeThreshold && mSwipeGestureType == GESTURE_SLIDE_UP 4893d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen && mStackSlider.mMode == StackSlider.NORMAL_MODE) { 49044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Swipe threshold exceeded, swipe up 491839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_UP) { 492839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen showPrevious(); 493839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 494839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen showNext(); 495839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 496839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 49732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mHighlight.bringToFront(); 498839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else if (mSwipeGestureType == GESTURE_SLIDE_UP ) { 49944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Didn't swipe up far enough, snap back down 500839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int duration; 501839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float finalYProgress = (mStackMode == ITEMS_SLIDE_DOWN) ? 1 : 0; 502839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_UP || mStackSlider.mMode != StackSlider.NORMAL_MODE) { 503839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen duration = Math.round(mStackSlider.getDurationForNeutralPosition()); 504839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 505839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen duration = Math.round(mStackSlider.getDurationForOffscreenPosition()); 506839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 50732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 508b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen StackSlider animationSlider = new StackSlider(mStackSlider); 509839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> snapBackY = 510839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("YProgress", finalYProgress); 511839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> snapBackX = 512839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("XProgress", 0.0f); 513839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyAnimator pa = new PropertyAnimator(duration, animationSlider, 514839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen snapBackX, snapBackY); 515839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen pa.setInterpolator(new LinearInterpolator()); 516839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen pa.start(); 51732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } else if (mSwipeGestureType == GESTURE_SLIDE_DOWN) { 51844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Didn't swipe down far enough, snap back up 519839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float finalYProgress = (mStackMode == ITEMS_SLIDE_DOWN) ? 0 : 1; 520839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int duration; 521839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mStackMode == ITEMS_SLIDE_DOWN || mStackSlider.mMode != StackSlider.NORMAL_MODE) { 522839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen duration = Math.round(mStackSlider.getDurationForNeutralPosition()); 523839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 524839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen duration = Math.round(mStackSlider.getDurationForOffscreenPosition()); 525839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 5263d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 527b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen StackSlider animationSlider = new StackSlider(mStackSlider); 528839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> snapBackY = 529839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("YProgress", finalYProgress); 530839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyValuesHolder<Float> snapBackX = 531839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen new PropertyValuesHolder<Float>("XProgress", 0.0f); 532839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen PropertyAnimator pa = new PropertyAnimator(duration, animationSlider, 533839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen snapBackX, snapBackY); 534839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen pa.start(); 53544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 53644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 53744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActivePointerId = INVALID_POINTER; 53844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mSwipeGestureType = GESTURE_NONE; 53932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 54032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 54132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private class StackSlider { 54232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen View mView; 54332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float mYProgress; 54432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float mXProgress; 54532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 5463d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen static final int NORMAL_MODE = 0; 5473d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen static final int BEGINNING_OF_STACK_MODE = 1; 5483d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen static final int END_OF_STACK_MODE = 2; 5493d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 5503d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen int mMode = NORMAL_MODE; 5513d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 552b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public StackSlider() { 553b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 554b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 555b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public StackSlider(StackSlider copy) { 556b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen mView = copy.mView; 557b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen mYProgress = copy.mYProgress; 558b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen mXProgress = copy.mXProgress; 5593d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mMode = copy.mMode; 560b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 561b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 56232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private float cubic(float r) { 563839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return (float) (Math.pow(2 * r - 1, 3) + 1) / 2.0f; 56432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 56532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 56632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private float highlightAlphaInterpolator(float r) { 56732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float pivot = 0.4f; 56832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen if (r < pivot) { 569839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return 0.85f * cubic(r / pivot); 57032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } else { 571839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return 0.85f * cubic(1 - (r - pivot) / (1 - pivot)); 57232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 57332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 57432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 57532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen private float viewAlphaInterpolator(float r) { 57632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen float pivot = 0.3f; 57732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen if (r > pivot) { 578839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return (r - pivot) / (1 - pivot); 57932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } else { 58032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen return 0; 58132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 58232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 58332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 584b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen private float rotationInterpolator(float r) { 585b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen float pivot = 0.2f; 586b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen if (r < pivot) { 587b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen return 0; 588b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } else { 589839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return (r - pivot) / (1 - pivot); 590b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 591b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 592b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 59332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen void setView(View v) { 59432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mView = v; 59532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 59632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 59732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen public void setYProgress(float r) { 59832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen // enforce r between 0 and 1 59932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen r = Math.min(1.0f, r); 60032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen r = Math.max(0, r); 60132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 60232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mYProgress = r; 60332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen final LayoutParams viewLp = (LayoutParams) mView.getLayoutParams(); 60432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen final LayoutParams highlightLp = (LayoutParams) mHighlight.getLayoutParams(); 60532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 606839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int stackDirection = (mStackMode == ITEMS_SLIDE_UP) ? 1 : -1; 607839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 6083d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen switch (mMode) { 6093d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen case NORMAL_MODE: 610839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen viewLp.setVerticalOffset(Math.round(-r * stackDirection * mViewHeight)); 611839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen highlightLp.setVerticalOffset(Math.round(-r * stackDirection * mViewHeight)); 6123d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mHighlight.setAlpha(highlightAlphaInterpolator(r)); 6133d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 614839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float alpha = viewAlphaInterpolator(1 - r); 6153d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 6163d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen // We make sure that views which can't be seen (have 0 alpha) are also invisible 6173d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen // so that they don't interfere with click events. 6183d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (mView.getAlpha() == 0 && alpha != 0 && mView.getVisibility() != VISIBLE) { 6193d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mView.setVisibility(VISIBLE); 6203d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } else if (alpha == 0 && mView.getAlpha() != 0 6213d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen && mView.getVisibility() == VISIBLE) { 6223d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mView.setVisibility(INVISIBLE); 6233d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 624b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 6253d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mView.setAlpha(alpha); 626839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mView.setRotationX(stackDirection * 90.0f * rotationInterpolator(r)); 627839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mHighlight.setRotationX(stackDirection * 90.0f * rotationInterpolator(r)); 6283d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen break; 6293d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen case BEGINNING_OF_STACK_MODE: 630839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen r = r * 0.2f; 631839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen viewLp.setVerticalOffset(Math.round(-stackDirection * r * mViewHeight)); 632839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen highlightLp.setVerticalOffset(Math.round(-stackDirection * r * mViewHeight)); 6333d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mHighlight.setAlpha(highlightAlphaInterpolator(r)); 6343d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen break; 6353d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen case END_OF_STACK_MODE: 636839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen r = (1-r) * 0.2f; 637839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen viewLp.setVerticalOffset(Math.round(stackDirection * r * mViewHeight)); 638839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen highlightLp.setVerticalOffset(Math.round(stackDirection * r * mViewHeight)); 6393d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mHighlight.setAlpha(highlightAlphaInterpolator(r)); 6403d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen break; 641b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 64232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 64332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 64432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen public void setXProgress(float r) { 64532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen // enforce r between 0 and 1 6463d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen r = Math.min(2.0f, r); 6473d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen r = Math.max(-2.0f, r); 64832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 64932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen mXProgress = r; 65032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 65132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen final LayoutParams viewLp = (LayoutParams) mView.getLayoutParams(); 65232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen final LayoutParams highlightLp = (LayoutParams) mHighlight.getLayoutParams(); 65332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 6543d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen r *= 0.2f; 655839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen viewLp.setHorizontalOffset(Math.round(r * mViewHeight)); 656839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen highlightLp.setHorizontalOffset(Math.round(r * mViewHeight)); 65732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 65832a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 6593d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen void setMode(int mode) { 6603d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen mMode = mode; 6613d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 6623d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 6633d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen float getDurationForNeutralPosition() { 664839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return getDuration(false, 0); 6653d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 6663d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 6673d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen float getDurationForOffscreenPosition() { 668839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return getDuration(true, 0); 669839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 670839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 671839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float getDurationForNeutralPosition(float velocity) { 672839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return getDuration(false, velocity); 673839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 674839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 675839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float getDurationForOffscreenPosition(float velocity) { 676839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return getDuration(true, velocity); 6773d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 6783d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 679839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private float getDuration(boolean invert, float velocity) { 6803d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (mView != null) { 6813d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen final LayoutParams viewLp = (LayoutParams) mView.getLayoutParams(); 6823d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 683839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float d = (float) Math.sqrt(Math.pow(viewLp.horizontalOffset, 2) + 684839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Math.pow(viewLp.verticalOffset, 2)); 6853d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen float maxd = (float) Math.sqrt(Math.pow(mViewHeight, 2) + 686839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Math.pow(0.4f * mViewHeight, 2)); 687839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 688839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (velocity == 0) { 689839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return (invert ? (1 - d / maxd) : d / maxd) * DEFAULT_ANIMATION_DURATION; 690839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 691839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float duration = invert ? d / Math.abs(velocity) : 692839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen (maxd - d) / Math.abs(velocity); 693839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (duration < MINIMUM_ANIMATION_DURATION || 694839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen duration > DEFAULT_ANIMATION_DURATION) { 695839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return getDuration(invert, 0); 696839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else { 697839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen return duration; 698839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 699839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 7003d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 7013d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen return 0; 7023d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 7033d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 704839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen public float getYProgress() { 70532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen return mYProgress; 70632a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 70732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 708839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen public float getXProgress() { 70932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen return mXProgress; 71032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 71144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 71244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 71344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen @Override 71444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen public void onRemoteAdapterConnected() { 71544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen super.onRemoteAdapterConnected(); 7161480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen // On first run, we want to set the stack to the end. 7171480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen if (mAdapter != null && mWhichChild == -1) { 7181480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen mWhichChild = mAdapter.getCount() - 1; 7191480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen } 720b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen setDisplayedChild(mWhichChild); 72144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 72232a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 7239b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams createOrReuseLayoutParams(View v) { 7249b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen final ViewGroup.LayoutParams currentLp = v.getLayoutParams(); 7259b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (currentLp instanceof LayoutParams) { 7269b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams lp = (LayoutParams) currentLp; 7279b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen lp.setHorizontalOffset(0); 7289b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen lp.setVerticalOffset(0); 729839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen lp.width = 0; 730839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen lp.width = 0; 7319b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen return lp; 7329b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 7339b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen return new LayoutParams(v); 73432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 73532a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 7369b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen @Override 7379b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 7389b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen boolean dataChanged = mDataChanged; 7399b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (dataChanged) { 7409b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen handleDataChanged(); 7419b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7429b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // if the data changes, mWhichChild might be out of the bounds of the adapter 7439b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // in this case, we reset mWhichChild to the beginning 7449b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (mWhichChild >= mAdapter.getCount()) 7459b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mWhichChild = 0; 7469b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7479b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen showOnly(mWhichChild, true, true); 7489b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 7499b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7509b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen final int childCount = getChildCount(); 7519b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen for (int i = 0; i < childCount; i++) { 7529b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen final View child = getChildAt(i); 7539b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7549b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int childRight = mPaddingLeft + child.getMeasuredWidth(); 7559b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int childBottom = mPaddingTop + child.getMeasuredHeight(); 7569b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams lp = (LayoutParams) child.getLayoutParams(); 7579b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7589b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen child.layout(mPaddingLeft + lp.horizontalOffset, mPaddingTop + lp.verticalOffset, 7599b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen childRight + lp.horizontalOffset, childBottom + lp.verticalOffset); 7609b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7619b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 7629b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 7639b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mDataChanged = false; 7649b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen onLayout(); 7659b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 7669b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 767839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private void measureChildren() { 768839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int count = getChildCount(); 769839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int childWidth = mMeasuredWidth - mPaddingLeft - mPaddingRight; 770839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int childHeight = Math.round(mMeasuredHeight*(1-PERSPECTIVE_SHIFT_FACTOR)) 771839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen - mPaddingTop - mPaddingBottom; 772839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 773839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen for (int i = 0; i < count; i++) { 774839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final View child = getChildAt(i); 775839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen child.measure(MeasureSpec.makeMeasureSpec(childWidth, MeasureSpec.EXACTLY), 776839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen MeasureSpec.makeMeasureSpec(childHeight, MeasureSpec.EXACTLY)); 777839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 778839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 779839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 780839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen @Override 781839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 782839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec); 783839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec); 784839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec); 785839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec); 786839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 787839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen boolean haveChildRefSize = (mReferenceChildWidth != -1 && mReferenceChildHeight != -1); 788839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 789839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // We need to deal with the case where our parent hasn't told us how 790839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // big we should be. In this case we should 791839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float factor = 1/(1 - PERSPECTIVE_SHIFT_FACTOR); 792839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (heightSpecMode == MeasureSpec.UNSPECIFIED) { 793839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen heightSpecSize = haveChildRefSize ? 794839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Math.round(mReferenceChildHeight * (1 + factor)) + 795839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingTop + mPaddingBottom : 0; 796839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else if (heightSpecMode == MeasureSpec.AT_MOST) { 797839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen heightSpecSize = haveChildRefSize ? Math.min( 798839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Math.round(mReferenceChildHeight * (1 + factor)) + mPaddingTop + 799839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingBottom, heightSpecSize) : 0; 800839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 801839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 802839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (widthSpecMode == MeasureSpec.UNSPECIFIED) { 803839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen widthSpecSize = haveChildRefSize ? mReferenceChildWidth + mPaddingLeft + 804839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingRight : 0; 805839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else if (heightSpecMode == MeasureSpec.AT_MOST) { 806839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen widthSpecSize = haveChildRefSize ? Math.min(mReferenceChildWidth + mPaddingLeft + 807839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingRight, widthSpecSize) : 0; 808839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 809839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 810839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen setMeasuredDimension(widthSpecSize, heightSpecSize); 811839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen measureChildren(); 812839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 813839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 8149b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen class LayoutParams extends ViewGroup.LayoutParams { 8159b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int horizontalOffset; 8169b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int verticalOffset; 8179b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen View mView; 8189b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8199b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams(View view) { 8209b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen super(0, 0); 821839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen width = 0; 822839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen height = 0; 8239b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen horizontalOffset = 0; 8249b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen verticalOffset = 0; 8259b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mView = view; 8269b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 8279b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8289b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams(Context c, AttributeSet attrs) { 8299b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen super(c, attrs); 8309b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen horizontalOffset = 0; 8319b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen verticalOffset = 0; 832839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen width = 0; 833839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen height = 0; 834b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 835b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 8369b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private Rect parentRect = new Rect(); 8379b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen void invalidateGlobalRegion(View v, Rect r) { 8389b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen View p = v; 8399b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (!(v.getParent() != null && v.getParent() instanceof View)) return; 8409b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8419b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen View gp = (View) v.getParent(); 8429b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen boolean firstPass = true; 8439b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen parentRect.set(0, 0, 0, 0); 8449b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int depth = 0; 8459b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen while (gp.getParent() != null && gp.getParent() instanceof View 8469b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen && !parentRect.contains(r)) { 8479b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (!firstPass) { 8489b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen r.offset(p.getLeft() - gp.getScrollX(), p.getTop() - gp.getScrollY()); 8499b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen depth++; 8509b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 8519b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen firstPass = false; 8529b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen p = (View) p.getParent(); 8539b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen gp = (View) p.getParent(); 8549b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen parentRect.set(p.getLeft() - gp.getScrollX(), p.getTop() - gp.getScrollY(), 8559b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen p.getRight() - gp.getScrollX(), p.getBottom() - gp.getScrollY()); 856839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 857839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // TODO: we need to stop early here if we've hit the edge of the screen 858839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // so as to prevent us from walking too high in the hierarchy. A lot of this 859839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // code might become a lot more straightforward. 8609b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 8619b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8629b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (depth > mAncestorHeight) { 8639b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mAncestorContainingAllChildren = (ViewGroup) p; 8649b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mAncestorHeight = depth; 8659b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen disableParentalClipping(); 8669b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 8679b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8689b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen p.invalidate(r.left, r.top, r.right, r.bottom); 8699b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 87032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 8719b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private Rect invalidateRect = new Rect(); 8729b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private RectF invalidateRectf = new RectF(); 8739b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen // This is public so that PropertyAnimator can access it 8749b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen public void setVerticalOffset(int newVerticalOffset) { 8759b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int offsetDelta = newVerticalOffset - verticalOffset; 8769b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen verticalOffset = newVerticalOffset; 87732a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 8789b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (mView != null) { 8799b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mView.requestLayout(); 8809b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int top = Math.min(mView.getTop() + offsetDelta, mView.getTop()); 8819b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int bottom = Math.max(mView.getBottom() + offsetDelta, mView.getBottom()); 8829b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8839b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.set(mView.getLeft(), top, mView.getRight(), bottom); 8849b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8859b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen float xoffset = -invalidateRectf.left; 8869b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen float yoffset = -invalidateRectf.top; 8879b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.offset(xoffset, yoffset); 8889b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mView.getMatrix().mapRect(invalidateRectf); 8899b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.offset(-xoffset, -yoffset); 8909b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRect.set((int) Math.floor(invalidateRectf.left), 8919b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.floor(invalidateRectf.top), 8929b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.ceil(invalidateRectf.right), 8939b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.ceil(invalidateRectf.bottom)); 8949b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8959b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateGlobalRegion(mView, invalidateRect); 8969b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 8979b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 8989b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 8999b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen public void setHorizontalOffset(int newHorizontalOffset) { 9009b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int offsetDelta = newHorizontalOffset - horizontalOffset; 9019b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen horizontalOffset = newHorizontalOffset; 9029b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9039b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (mView != null) { 9049b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mView.requestLayout(); 9059b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int left = Math.min(mView.getLeft() + offsetDelta, mView.getLeft()); 9069b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen int right = Math.max(mView.getRight() + offsetDelta, mView.getRight()); 9079b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.set(left, mView.getTop(), right, mView.getBottom()); 9089b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9099b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen float xoffset = -invalidateRectf.left; 9109b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen float yoffset = -invalidateRectf.top; 9119b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.offset(xoffset, yoffset); 9129b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mView.getMatrix().mapRect(invalidateRectf); 9139b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRectf.offset(-xoffset, -yoffset); 9149b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9159b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateRect.set((int) Math.floor(invalidateRectf.left), 9169b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.floor(invalidateRectf.top), 9179b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.ceil(invalidateRectf.right), 9189b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen (int) Math.ceil(invalidateRectf.bottom)); 9199b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9209b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen invalidateGlobalRegion(mView, invalidateRect); 9219b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9229b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 92332a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 92432a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 9259b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private static class HolographicHelper { 9269b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private final Paint mHolographicPaint = new Paint(); 9279b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen private final Paint mErasePaint = new Paint(); 928839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private final Paint mBlurPaint = new Paint(); 92932a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 9309b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen HolographicHelper() { 9319b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen initializePaints(); 9329b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9339b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9349b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen void initializePaints() { 9359b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mHolographicPaint.setColor(0xff6699ff); 9369b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mHolographicPaint.setFilterBitmap(true); 937839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mHolographicPaint.setMaskFilter(TableMaskFilter.CreateClipTable(0, 30)); 9389b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mErasePaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT)); 9399b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mErasePaint.setFilterBitmap(true); 940839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mBlurPaint.setMaskFilter(new BlurMaskFilter(2, BlurMaskFilter.Blur.NORMAL)); 9419b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9429b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9439b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen Bitmap createOutline(View v) { 9449b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (v.getMeasuredWidth() == 0 || v.getMeasuredHeight() == 0) { 9459b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen return null; 9469b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9479b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9489b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen Bitmap bitmap = Bitmap.createBitmap(v.getMeasuredWidth(), v.getMeasuredHeight(), 9499b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen Bitmap.Config.ARGB_8888); 9509b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen Canvas canvas = new Canvas(bitmap); 95132a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen 9529b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen float rotationX = v.getRotationX(); 953839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float rotation = v.getRotation(); 954839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen float translationY = v.getTranslationY(); 9559b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen v.setRotationX(0); 956839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen v.setRotation(0); 957839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen v.setTranslationY(0); 9589b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen canvas.concat(v.getMatrix()); 9599b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen v.draw(canvas); 9609b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen v.setRotationX(rotationX); 961839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen v.setRotation(rotation); 962839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen v.setTranslationY(translationY); 963839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen canvas.setMatrix(id); 9649b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9659b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen drawOutline(canvas, bitmap); 9669b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen return bitmap; 9679b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 9689b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen 9699b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen final Matrix id = new Matrix(); 9709b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen void drawOutline(Canvas dest, Bitmap src) { 971839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int[] xy = new int[2]; 972839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Bitmap mask = src.extractAlpha(mBlurPaint, xy); 973839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen Canvas maskCanvas = new Canvas(mask); 974839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen maskCanvas.drawBitmap(src, -xy[0], -xy[1], mErasePaint); 9759b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen dest.drawColor(0, PorterDuff.Mode.CLEAR); 9769b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen dest.setMatrix(id); 977839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen dest.drawBitmap(mask, xy[0], xy[1], mHolographicPaint); 9789b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen mask.recycle(); 9799b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen } 98032a42f1587db77b958d62c3de4f2734eb0a3b965Adam Cohen } 98144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen} 982