1ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki/* 2ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * Copyright (C) 2017 The Android Open Source Project 3ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * 4ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * Licensed under the Apache License, Version 2.0 (the "License"); 5ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * you may not use this file except in compliance with the License. 6ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * You may obtain a copy of the License at 7ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * 8ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * http://www.apache.org/licenses/LICENSE-2.0 9ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * 10ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * Unless required by applicable law or agreed to in writing, software 11ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * distributed under the License is distributed on an "AS IS" BASIS, 12ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * See the License for the specific language governing permissions and 14ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * limitations under the License. 15ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki */ 16ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 17ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Arakipackage android.support.transition; 18ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 19ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Arakiimport android.graphics.Rect; 20ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Arakiimport android.support.v4.view.ViewCompat; 21ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Arakiimport android.view.Gravity; 22ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Arakiimport android.view.View; 23ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Arakiimport android.view.ViewGroup; 24ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 25ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki/** 26ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * A <code>TransitionPropagation</code> that propagates based on the distance to the side 27ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * and, orthogonally, the distance to epicenter. If the transitioning View is visible in 28ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * the start of the transition, then it will transition sooner when closer to the side and 29ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * later when farther. If the view is not visible in the start of the transition, then 30ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * it will transition later when closer to the side and sooner when farther from the edge. 31ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * This is the default TransitionPropagation used with {@link android.transition.Slide}. 32ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki */ 33ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Arakipublic class SidePropagation extends VisibilityPropagation { 34ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 35ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki private float mPropagationSpeed = 3.0f; 36ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki private int mSide = Gravity.BOTTOM; 37ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 38ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki /** 39ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * Sets the side that is used to calculate the transition propagation. If the transitioning 40ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * View is visible in the start of the transition, then it will transition sooner when 41ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * closer to the side and later when farther. If the view is not visible in the start of 42ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * the transition, then it will transition later when closer to the side and sooner when 43ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * farther from the edge. The default is {@link Gravity#BOTTOM}. 44ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * 45ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * @param side The side that is used to calculate the transition propagation. Must be one of 46ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * {@link Gravity#LEFT}, {@link Gravity#TOP}, {@link Gravity#RIGHT}, 47ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * {@link Gravity#BOTTOM}, {@link Gravity#START}, or {@link Gravity#END}. 48ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki */ 49ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki public void setSide(@Slide.GravityFlag int side) { 50ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki mSide = side; 51ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 52ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 53ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki /** 54ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * Sets the speed at which transition propagation happens, relative to the duration of the 55ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * Transition. A <code>propagationSpeed</code> of 1 means that a View centered at the side 56ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * set in {@link #setSide(int)} and View centered at the opposite edge will have a difference 57ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * in start delay of approximately the duration of the Transition. A speed of 2 means the 58ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * start delay difference will be approximately half of the duration of the transition. A 59ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * value of 0 is illegal, but negative values will invert the propagation. 60ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * 61ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * @param propagationSpeed The speed at which propagation occurs, relative to the duration 62ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * of the transition. A speed of 4 means it works 4 times as fast 63ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki * as the duration of the transition. May not be 0. 64ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki */ 65ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki public void setPropagationSpeed(float propagationSpeed) { 66ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki if (propagationSpeed == 0) { 67ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki throw new IllegalArgumentException("propagationSpeed may not be 0"); 68ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 69ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki mPropagationSpeed = propagationSpeed; 70ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 71ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 72ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki @Override 73ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki public long getStartDelay(ViewGroup sceneRoot, Transition transition, 74ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki TransitionValues startValues, TransitionValues endValues) { 75ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki if (startValues == null && endValues == null) { 76ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki return 0; 77ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 78ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int directionMultiplier = 1; 79ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki Rect epicenter = transition.getEpicenter(); 80ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki TransitionValues positionValues; 81ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki if (endValues == null || getViewVisibility(startValues) == View.VISIBLE) { 82ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki positionValues = startValues; 83ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki directionMultiplier = -1; 84ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } else { 85ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki positionValues = endValues; 86ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 87ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 88ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int viewCenterX = getViewX(positionValues); 89ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int viewCenterY = getViewY(positionValues); 90ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 91ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int[] loc = new int[2]; 92ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki sceneRoot.getLocationOnScreen(loc); 93ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int left = loc[0] + Math.round(sceneRoot.getTranslationX()); 94ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int top = loc[1] + Math.round(sceneRoot.getTranslationY()); 95ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int right = left + sceneRoot.getWidth(); 96ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int bottom = top + sceneRoot.getHeight(); 97ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 98ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int epicenterX; 99ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int epicenterY; 100ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki if (epicenter != null) { 101ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki epicenterX = epicenter.centerX(); 102ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki epicenterY = epicenter.centerY(); 103ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } else { 104ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki epicenterX = (left + right) / 2; 105ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki epicenterY = (top + bottom) / 2; 106ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 107ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 108ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki float distance = distance(sceneRoot, viewCenterX, viewCenterY, epicenterX, epicenterY, 109ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki left, top, right, bottom); 110ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki float maxDistance = getMaxDistance(sceneRoot); 111ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki float distanceFraction = distance / maxDistance; 112ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 113ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki long duration = transition.getDuration(); 114ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki if (duration < 0) { 115ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki duration = 300; 116ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 117ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 118ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki return Math.round(duration * directionMultiplier / mPropagationSpeed * distanceFraction); 119ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 120ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 121ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki private int distance(View sceneRoot, int viewX, int viewY, int epicenterX, int epicenterY, 122ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int left, int top, int right, int bottom) { 123ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki final int side; 124ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki if (mSide == Gravity.START) { 125ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki final boolean isRtl = ViewCompat.getLayoutDirection(sceneRoot) 126ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki == ViewCompat.LAYOUT_DIRECTION_RTL; 127ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki side = isRtl ? Gravity.RIGHT : Gravity.LEFT; 128ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } else if (mSide == Gravity.END) { 129ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki final boolean isRtl = ViewCompat.getLayoutDirection(sceneRoot) 130ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki == ViewCompat.LAYOUT_DIRECTION_RTL; 131ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki side = isRtl ? Gravity.LEFT : Gravity.RIGHT; 132ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } else { 133ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki side = mSide; 134ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 135ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki int distance = 0; 136ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki switch (side) { 137ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki case Gravity.LEFT: 138ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki distance = right - viewX + Math.abs(epicenterY - viewY); 139ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki break; 140ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki case Gravity.TOP: 141ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki distance = bottom - viewY + Math.abs(epicenterX - viewX); 142ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki break; 143ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki case Gravity.RIGHT: 144ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki distance = viewX - left + Math.abs(epicenterY - viewY); 145ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki break; 146ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki case Gravity.BOTTOM: 147ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki distance = viewY - top + Math.abs(epicenterX - viewX); 148ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki break; 149ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 150ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki return distance; 151ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 152ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 153ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki private int getMaxDistance(ViewGroup sceneRoot) { 154ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki switch (mSide) { 155ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki case Gravity.LEFT: 156ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki case Gravity.RIGHT: 157ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki case Gravity.START: 158ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki case Gravity.END: 159ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki return sceneRoot.getWidth(); 160ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki default: 161ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki return sceneRoot.getHeight(); 162ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 163ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki } 164ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki 165ae4925aede60914bcca5ed47d7ce868ae14313a2Yuichi Araki} 166