1c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki/* 2c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * Copyright (C) 2016 The Android Open Source Project 3c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * 4c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * Licensed under the Apache License, Version 2.0 (the "License"); 5c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * you may not use this file except in compliance with the License. 6c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * You may obtain a copy of the License at 7c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * 8c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * http://www.apache.org/licenses/LICENSE-2.0 9c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * 10c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * Unless required by applicable law or agreed to in writing, software 11c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * distributed under the License is distributed on an "AS IS" BASIS, 12c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * See the License for the specific language governing permissions and 14c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * limitations under the License. 15c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki */ 16c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 17c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakipackage android.support.transition; 18c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 198e10080c914d1ad0784394fa3026b85535535847Aurimas Liutikasimport static android.support.annotation.RestrictTo.Scope.LIBRARY_GROUP; 208e10080c914d1ad0784394fa3026b85535535847Aurimas Liutikas 21c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakiimport android.content.Context; 22c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakiimport android.graphics.Canvas; 23c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakiimport android.graphics.Rect; 24c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakiimport android.graphics.drawable.Drawable; 254e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Arakiimport android.support.annotation.NonNull; 268f886fe8c7e23fe6ccb8734167c960c2ed3429c3Alan Viveretteimport android.support.annotation.RequiresApi; 27c39d9c75590eca86a5e7e32a8824ba04a0d42e9bAlan Viveretteimport android.support.annotation.RestrictTo; 28a5c36708f8dd136f2a02a79709923630449be5b5Chris Banesimport android.support.v4.view.ViewCompat; 29c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakiimport android.view.MotionEvent; 30c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakiimport android.view.View; 31c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakiimport android.view.ViewGroup; 32c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakiimport android.view.ViewParent; 33c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 34c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakiimport java.lang.reflect.InvocationTargetException; 35c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakiimport java.lang.reflect.Method; 36c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Arakiimport java.util.ArrayList; 37c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 388f886fe8c7e23fe6ccb8734167c960c2ed3429c3Alan Viverette@RequiresApi(14) 394e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Arakiclass ViewOverlayApi14 implements ViewOverlayImpl { 40c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 41c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki /** 42c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * The actual container for the drawables (and views, if it's a ViewGroupOverlay). 43c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * All of the management and rendering details for the overlay are handled in 44c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * OverlayViewGroup. 45c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki */ 46c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki protected OverlayViewGroup mOverlayViewGroup; 47c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 484e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki ViewOverlayApi14(Context context, ViewGroup hostView, View requestingView) { 49c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mOverlayViewGroup = new OverlayViewGroup(context, hostView, requestingView, this); 50c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 51c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 52c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki static ViewGroup getContentView(View view) { 53c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki View parent = view; 54c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki while (parent != null) { 554e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki if (parent.getId() == android.R.id.content && parent instanceof ViewGroup) { 56c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki return (ViewGroup) parent; 57c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 58c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (parent.getParent() instanceof ViewGroup) { 59c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki parent = (ViewGroup) parent.getParent(); 60c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 61c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 62c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki return null; 63c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 64c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 654e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki static ViewOverlayApi14 createFrom(View view) { 66c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki ViewGroup contentView = getContentView(view); 67c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (contentView != null) { 68c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki final int numChildren = contentView.getChildCount(); 69c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki for (int i = 0; i < numChildren; ++i) { 70c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki View child = contentView.getChildAt(i); 71c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (child instanceof OverlayViewGroup) { 72c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki return ((OverlayViewGroup) child).mViewOverlay; 73c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 74c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 754e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki return new ViewGroupOverlayApi14(contentView.getContext(), contentView, view); 76c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 77c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki return null; 78c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 79c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 80c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki /** 81c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * Used internally by View and ViewGroup to handle drawing and invalidation 82c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * of the overlay 83c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki */ 84c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki ViewGroup getOverlayView() { 85c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki return mOverlayViewGroup; 86c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 87c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 884e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki @Override 894e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki public void add(@NonNull Drawable drawable) { 90c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mOverlayViewGroup.add(drawable); 91c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 92c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 934e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki @Override 94c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki public void clear() { 95c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mOverlayViewGroup.clear(); 96c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 97c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 984e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki @Override 994e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki public void remove(@NonNull Drawable drawable) { 1004e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki mOverlayViewGroup.remove(drawable); 1014e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki } 1024e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki 103c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki boolean isEmpty() { 104c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki return mOverlayViewGroup.isEmpty(); 105c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 106c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 1074e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki 108c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki /** 109c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * OverlayViewGroup is a container that View and ViewGroup use to host 11050ce74b0963de66b294761c045428562d946b65aYuichi Araki * drawables and views added to their overlays ({@code ViewOverlay} and 11150ce74b0963de66b294761c045428562d946b65aYuichi Araki * {@code ViewGroupOverlay}, respectively). Drawables are added to the overlay 112c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * via the add/remove methods in ViewOverlay, Views are added/removed via 113c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * ViewGroupOverlay. These drawable and view objects are 114c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * drawn whenever the view itself is drawn; first the view draws its own 115c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * content (and children, if it is a ViewGroup), then it draws its overlay 116c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * (if it has one). 117c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * 118c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * <p>Besides managing and drawing the list of drawables, this class serves 119c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * two purposes: 120c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * (1) it noops layout calls because children are absolutely positioned and 121c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * (2) it forwards all invalidation calls to its host view. The invalidation 122c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * redirect is necessary because the overlay is not a child of the host view 123c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * and invalidation cannot therefore follow the normal path up through the 124c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * parent hierarchy.</p> 125c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * 126c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * @see View#getOverlay() 127c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * @see ViewGroup#getOverlay() 128c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki */ 129c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki static class OverlayViewGroup extends ViewGroup { 130c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 131c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki static Method sInvalidateChildInParentFastMethod; 132c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 133c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki static { 134c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki try { 135c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki sInvalidateChildInParentFastMethod = ViewGroup.class.getDeclaredMethod( 136c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki "invalidateChildInParentFast", int.class, int.class, Rect.class); 137c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } catch (NoSuchMethodException e) { 138c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 139c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 140c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 141c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 142c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki /** 143c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * The View for which this is an overlay. Invalidations of the overlay are redirected to 144c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * this host view. 145c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki */ 146c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki ViewGroup mHostView; 147c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki View mRequestingView; 148c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki /** 149c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * The set of drawables to draw when the overlay is rendered. 150c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki */ 151c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki ArrayList<Drawable> mDrawables = null; 152c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki /** 153c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * Reference to the hosting overlay object 154c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki */ 1554e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki ViewOverlayApi14 mViewOverlay; 156c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 157c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki OverlayViewGroup(Context context, ViewGroup hostView, View requestingView, 1584e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki ViewOverlayApi14 viewOverlay) { 159c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki super(context); 160c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mHostView = hostView; 161c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mRequestingView = requestingView; 162c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki setRight(hostView.getWidth()); 163c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki setBottom(hostView.getHeight()); 1644e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki hostView.addView(this); 165c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mViewOverlay = viewOverlay; 166c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 167c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 168c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki @Override 169c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki public boolean dispatchTouchEvent(MotionEvent ev) { 170c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki // Intercept and noop all touch events - overlays do not allow touch events 171c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki return false; 172c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 173c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 174c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki public void add(Drawable drawable) { 175c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (mDrawables == null) { 176c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 1774e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki mDrawables = new ArrayList<>(); 178c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 179c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (!mDrawables.contains(drawable)) { 180c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki // Make each drawable unique in the overlay; can't add it more than once 181c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mDrawables.add(drawable); 182c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki invalidate(drawable.getBounds()); 183c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki drawable.setCallback(this); 184c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 185c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 186c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 187c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki public void remove(Drawable drawable) { 188c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (mDrawables != null) { 189c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mDrawables.remove(drawable); 190c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki invalidate(drawable.getBounds()); 191c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki drawable.setCallback(null); 192c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 193c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 194c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 195c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki @Override 196ce318dbf0020462e651049fd4f32dc226b656f5bAurimas Liutikas protected boolean verifyDrawable(@NonNull Drawable who) { 197c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki return super.verifyDrawable(who) || (mDrawables != null && mDrawables.contains(who)); 198c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 199c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 200c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki public void add(View child) { 201c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (child.getParent() instanceof ViewGroup) { 202c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki ViewGroup parent = (ViewGroup) child.getParent(); 2034e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki if (parent != mHostView && parent.getParent() != null 2044e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki && ViewCompat.isAttachedToWindow(parent)) { 205c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki // Moving to different container; figure out how to position child such that 206c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki // it is in the same location on the screen 207c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki int[] parentLocation = new int[2]; 208c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki int[] hostViewLocation = new int[2]; 209c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki parent.getLocationOnScreen(parentLocation); 210c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mHostView.getLocationOnScreen(hostViewLocation); 211a5c36708f8dd136f2a02a79709923630449be5b5Chris Banes ViewCompat.offsetLeftAndRight(child, parentLocation[0] - hostViewLocation[0]); 212a5c36708f8dd136f2a02a79709923630449be5b5Chris Banes ViewCompat.offsetTopAndBottom(child, parentLocation[1] - hostViewLocation[1]); 213c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 214c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki parent.removeView(child); 215c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki// if (parent.getLayoutTransition() != null) { 216c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki// // LayoutTransition will cause the child to delay removal - cancel it 217c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki// parent.getLayoutTransition().cancel(LayoutTransition.DISAPPEARING); 218c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki// } 219c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki // fail-safe if view is still attached for any reason 220c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (child.getParent() != null) { 221c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki parent.removeView(child); 222c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 223c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 224c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki super.addView(child, getChildCount() - 1); 225c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 226c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 227c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki public void remove(View view) { 228c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki super.removeView(view); 229c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (isEmpty()) { 230c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mHostView.removeView(this); 231c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 232c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 233c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 234c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki public void clear() { 235c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki removeAllViews(); 236c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (mDrawables != null) { 237c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mDrawables.clear(); 238c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 239c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 240c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 241c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki boolean isEmpty() { 2424e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki return getChildCount() == 0 2434e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki && (mDrawables == null || mDrawables.size() == 0); 244c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 245c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 246c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki @Override 247ce318dbf0020462e651049fd4f32dc226b656f5bAurimas Liutikas public void invalidateDrawable(@NonNull Drawable drawable) { 248c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki invalidate(drawable.getBounds()); 249c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 250c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 251c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki @Override 252c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki protected void dispatchDraw(Canvas canvas) { 253c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki int[] contentViewLocation = new int[2]; 254c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki int[] hostViewLocation = new int[2]; 255c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mHostView.getLocationOnScreen(contentViewLocation); 256c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mRequestingView.getLocationOnScreen(hostViewLocation); 257c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki canvas.translate(hostViewLocation[0] - contentViewLocation[0], 258c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki hostViewLocation[1] - contentViewLocation[1]); 259c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki canvas.clipRect( 260c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki new Rect(0, 0, mRequestingView.getWidth(), mRequestingView.getHeight())); 261c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki super.dispatchDraw(canvas); 262c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki final int numDrawables = (mDrawables == null) ? 0 : mDrawables.size(); 263c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki for (int i = 0; i < numDrawables; ++i) { 264c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mDrawables.get(i).draw(canvas); 265c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 266c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 267c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 268c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki @Override 269c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki protected void onLayout(boolean changed, int l, int t, int r, int b) { 270c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki // Noop: children are positioned absolutely 271c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 272c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 273c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki /* 274c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki The following invalidation overrides exist for the purpose of redirecting invalidation to 275c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki the host view. The overlay is not parented to the host view (since a View cannot be a 276c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki parent), so the invalidation cannot proceed through the normal parent hierarchy. 277c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki There is a built-in assumption that the overlay exactly covers the host view, therefore 278c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki the invalidation rectangles received do not need to be adjusted when forwarded to 279c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki the host view. 280c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki */ 281c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 282c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki private void getOffset(int[] offset) { 283c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki int[] contentViewLocation = new int[2]; 284c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki int[] hostViewLocation = new int[2]; 285c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mHostView.getLocationOnScreen(contentViewLocation); 286c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mRequestingView.getLocationOnScreen(hostViewLocation); 287c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki offset[0] = hostViewLocation[0] - contentViewLocation[0]; 288c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki offset[1] = hostViewLocation[1] - contentViewLocation[1]; 289c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 290c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 291c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki public void invalidateChildFast(View child, final Rect dirty) { 292c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (mHostView != null) { 293c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki // Note: This is not a "fast" invalidation. Would be nice to instead invalidate 294c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki // using DisplayList properties and a dirty rect instead of causing a real 295c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki // invalidation of the host view 296c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki int left = child.getLeft(); 297c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki int top = child.getTop(); 298c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki int[] offset = new int[2]; 299c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki getOffset(offset); 300c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki // TODO: implement transforms 301c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki// if (!child.getMatrix().isIdentity()) { 302c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki// child.transformRect(dirty); 303c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki// } 304c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki dirty.offset(left + offset[0], top + offset[1]); 305c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki mHostView.invalidate(dirty); 306c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 307c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 308c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 309c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki /** 310c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki * @hide 311c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki */ 3128e10080c914d1ad0784394fa3026b85535535847Aurimas Liutikas @RestrictTo(LIBRARY_GROUP) 313c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki protected ViewParent invalidateChildInParentFast(int left, int top, Rect dirty) { 314c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (mHostView instanceof ViewGroup && sInvalidateChildInParentFastMethod != null) { 315c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki try { 316c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki int[] offset = new int[2]; 317c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki getOffset(offset); 318c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki sInvalidateChildInParentFastMethod.invoke(mHostView, left, top, dirty); 319c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } catch (IllegalAccessException e) { 320c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki e.printStackTrace(); 321c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } catch (InvocationTargetException e) { 322c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki e.printStackTrace(); 323c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 324c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 325c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki return null; 326c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 327c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 328ce318dbf0020462e651049fd4f32dc226b656f5bAurimas Liutikas @SuppressWarnings("deprecation") 329c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki @Override 330c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 331c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (mHostView != null) { 332c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki dirty.offset(location[0], location[1]); 333c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki if (mHostView instanceof ViewGroup) { 334c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki location[0] = 0; 335c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki location[1] = 0; 336c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki int[] offset = new int[2]; 337c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki getOffset(offset); 338c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki dirty.offset(offset[0], offset[1]); 339c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki return super.invalidateChildInParent(location, dirty); 340c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki// return ((ViewGroup) mHostView).invalidateChildInParent(location, dirty); 341c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } else { 342c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki invalidate(dirty); 343c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 344c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 345c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki return null; 346c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 347c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 348c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki static class TouchInterceptor extends View { 349c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki TouchInterceptor(Context context) { 350c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki super(context); 351c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 352c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 353c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki } 354c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki 3554e5a72756eb66c31baf1a3054c66520f1c3f5b8cYuichi Araki 356c876cd8f9334e2423de00836009f3fd7a9566938Yuichi Araki} 357