1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17 package com.android.systemui.statusbar; 18 19 import android.animation.Animator; 20 import android.animation.AnimatorListenerAdapter; 21 import android.animation.ValueAnimator; 22 import android.util.ArrayMap; 23 import android.util.ArraySet; 24 import android.view.View; 25 import android.view.ViewGroup; 26 27 import com.android.systemui.Interpolators; 28 import com.android.systemui.R; 29 import com.android.systemui.statusbar.notification.TransformState; 30 import com.android.systemui.statusbar.stack.StackStateAnimator; 31 32 import java.util.Stack; 33 34 /** 35 * A view that can be transformed to and from. 36 */ 37 public class ViewTransformationHelper implements TransformableView { 38 39 private static final int TAG_CONTAINS_TRANSFORMED_VIEW = R.id.contains_transformed_view; 40 41 private ArrayMap<Integer, View> mTransformedViews = new ArrayMap<>(); 42 private ArrayMap<Integer, CustomTransformation> mCustomTransformations = new ArrayMap<>(); 43 private ValueAnimator mViewTransformationAnimation; 44 45 public void addTransformedView(int key, View transformedView) { 46 mTransformedViews.put(key, transformedView); 47 } 48 49 public void reset() { 50 mTransformedViews.clear(); 51 } 52 53 public void setCustomTransformation(CustomTransformation transformation, int viewType) { 54 mCustomTransformations.put(viewType, transformation); 55 } 56 57 @Override 58 public TransformState getCurrentState(int fadingView) { 59 View view = mTransformedViews.get(fadingView); 60 if (view != null && view.getVisibility() != View.GONE) { 61 return TransformState.createFrom(view); 62 } 63 return null; 64 } 65 66 @Override 67 public void transformTo(final TransformableView notification, final Runnable endRunnable) { 68 if (mViewTransformationAnimation != null) { 69 mViewTransformationAnimation.cancel(); 70 } 71 mViewTransformationAnimation = ValueAnimator.ofFloat(0.0f, 1.0f); 72 mViewTransformationAnimation.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 73 @Override 74 public void onAnimationUpdate(ValueAnimator animation) { 75 transformTo(notification, animation.getAnimatedFraction()); 76 } 77 }); 78 mViewTransformationAnimation.setInterpolator(Interpolators.LINEAR); 79 mViewTransformationAnimation.setDuration(StackStateAnimator.ANIMATION_DURATION_STANDARD); 80 mViewTransformationAnimation.addListener(new AnimatorListenerAdapter() { 81 public boolean mCancelled; 82 83 @Override 84 public void onAnimationEnd(Animator animation) { 85 if (!mCancelled) { 86 if (endRunnable != null) { 87 endRunnable.run(); 88 } 89 setVisible(false); 90 } else { 91 abortTransformations(); 92 } 93 } 94 95 @Override 96 public void onAnimationCancel(Animator animation) { 97 mCancelled = true; 98 } 99 }); 100 mViewTransformationAnimation.start(); 101 } 102 103 @Override 104 public void transformTo(TransformableView notification, float transformationAmount) { 105 for (Integer viewType : mTransformedViews.keySet()) { 106 TransformState ownState = getCurrentState(viewType); 107 if (ownState != null) { 108 CustomTransformation customTransformation = mCustomTransformations.get(viewType); 109 if (customTransformation != null && customTransformation.transformTo( 110 ownState, notification, transformationAmount)) { 111 ownState.recycle(); 112 continue; 113 } 114 TransformState otherState = notification.getCurrentState(viewType); 115 if (otherState != null) { 116 ownState.transformViewTo(otherState, transformationAmount); 117 otherState.recycle(); 118 } else { 119 ownState.disappear(transformationAmount, notification); 120 } 121 ownState.recycle(); 122 } 123 } 124 } 125 126 @Override 127 public void transformFrom(final TransformableView notification) { 128 if (mViewTransformationAnimation != null) { 129 mViewTransformationAnimation.cancel(); 130 } 131 mViewTransformationAnimation = ValueAnimator.ofFloat(0.0f, 1.0f); 132 mViewTransformationAnimation.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 133 @Override 134 public void onAnimationUpdate(ValueAnimator animation) { 135 transformFrom(notification, animation.getAnimatedFraction()); 136 } 137 }); 138 mViewTransformationAnimation.addListener(new AnimatorListenerAdapter() { 139 public boolean mCancelled; 140 141 @Override 142 public void onAnimationEnd(Animator animation) { 143 if (!mCancelled) { 144 setVisible(true); 145 } else { 146 abortTransformations(); 147 } 148 } 149 150 @Override 151 public void onAnimationCancel(Animator animation) { 152 mCancelled = true; 153 } 154 }); 155 mViewTransformationAnimation.setInterpolator(Interpolators.LINEAR); 156 mViewTransformationAnimation.setDuration(StackStateAnimator.ANIMATION_DURATION_STANDARD); 157 mViewTransformationAnimation.start(); 158 } 159 160 @Override 161 public void transformFrom(TransformableView notification, float transformationAmount) { 162 for (Integer viewType : mTransformedViews.keySet()) { 163 TransformState ownState = getCurrentState(viewType); 164 if (ownState != null) { 165 CustomTransformation customTransformation = mCustomTransformations.get(viewType); 166 if (customTransformation != null && customTransformation.transformFrom( 167 ownState, notification, transformationAmount)) { 168 ownState.recycle(); 169 continue; 170 } 171 TransformState otherState = notification.getCurrentState(viewType); 172 if (otherState != null) { 173 ownState.transformViewFrom(otherState, transformationAmount); 174 otherState.recycle(); 175 } else { 176 ownState.appear(transformationAmount, notification); 177 } 178 ownState.recycle(); 179 } 180 } 181 } 182 183 @Override 184 public void setVisible(boolean visible) { 185 if (mViewTransformationAnimation != null) { 186 mViewTransformationAnimation.cancel(); 187 } 188 for (Integer viewType : mTransformedViews.keySet()) { 189 TransformState ownState = getCurrentState(viewType); 190 if (ownState != null) { 191 ownState.setVisible(visible, false /* force */); 192 ownState.recycle(); 193 } 194 } 195 } 196 197 private void abortTransformations() { 198 for (Integer viewType : mTransformedViews.keySet()) { 199 TransformState ownState = getCurrentState(viewType); 200 if (ownState != null) { 201 ownState.abortTransformation(); 202 ownState.recycle(); 203 } 204 } 205 } 206 207 /** 208 * Add the remaining transformation views such that all views are being transformed correctly 209 * @param viewRoot the root below which all elements need to be transformed 210 */ 211 public void addRemainingTransformTypes(View viewRoot) { 212 // lets now tag the right views 213 int numValues = mTransformedViews.size(); 214 for (int i = 0; i < numValues; i++) { 215 View view = mTransformedViews.valueAt(i); 216 while (view != viewRoot.getParent()) { 217 view.setTag(TAG_CONTAINS_TRANSFORMED_VIEW, true); 218 view = (View) view.getParent(); 219 } 220 } 221 Stack<View> stack = new Stack<>(); 222 // Add the right views now 223 stack.push(viewRoot); 224 while (!stack.isEmpty()) { 225 View child = stack.pop(); 226 if (child.getVisibility() == View.GONE) { 227 continue; 228 } 229 Boolean containsView = (Boolean) child.getTag(TAG_CONTAINS_TRANSFORMED_VIEW); 230 if (containsView == null) { 231 // This one is unhandled, let's add it to our list. 232 int id = child.getId(); 233 if (id != View.NO_ID) { 234 // We only fade views with an id 235 addTransformedView(id, child); 236 continue; 237 } 238 } 239 child.setTag(TAG_CONTAINS_TRANSFORMED_VIEW, null); 240 if (child instanceof ViewGroup && !mTransformedViews.containsValue(child)){ 241 ViewGroup group = (ViewGroup) child; 242 for (int i = 0; i < group.getChildCount(); i++) { 243 stack.push(group.getChildAt(i)); 244 } 245 } 246 } 247 } 248 249 public void resetTransformedView(View view) { 250 TransformState state = TransformState.createFrom(view); 251 state.setVisible(true /* visible */, true /* force */); 252 state.recycle(); 253 } 254 255 /** 256 * @return a set of all views are being transformed. 257 */ 258 public ArraySet<View> getAllTransformingViews() { 259 return new ArraySet<>(mTransformedViews.values()); 260 } 261 262 public static abstract class CustomTransformation { 263 /** 264 * Transform a state to the given view 265 * @param ownState the state to transform 266 * @param notification the view to transform to 267 * @param transformationAmount how much transformation should be done 268 * @return whether a custom transformation is performed 269 */ 270 public abstract boolean transformTo(TransformState ownState, 271 TransformableView notification, 272 float transformationAmount); 273 274 /** 275 * Transform to this state from the given view 276 * @param ownState the state to transform to 277 * @param notification the view to transform from 278 * @param transformationAmount how much transformation should be done 279 * @return whether a custom transformation is performed 280 */ 281 public abstract boolean transformFrom(TransformState ownState, 282 TransformableView notification, 283 float transformationAmount); 284 285 /** 286 * Perform a custom initialisation before transforming. 287 * 288 * @param ownState our own state 289 * @param otherState the other state 290 * @return whether a custom initialization is done 291 */ 292 public boolean initTransformation(TransformState ownState, 293 TransformState otherState) { 294 return false; 295 } 296 297 public boolean customTransformTarget(TransformState ownState, 298 TransformState otherState) { 299 return false; 300 } 301 } 302 } 303
