mirror of
https://github.com/zhigang1992/react-native.git
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8e81644f64
Summary: This diff implements NativeAnimation offsets on Android. Running the examples should show no change; however, calling `setOffset()` should offset the final value for any value node by that amount. This brings Android up to date with JS and iOS animation APIs. Closes https://github.com/facebook/react-native/pull/10680 Differential Revision: D4119609 fbshipit-source-id: 96dccdf25f67c64c6787fd9ac762ec841cefc46a
74 lines
3.0 KiB
Java
74 lines
3.0 KiB
Java
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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package com.facebook.react.animated;
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import com.facebook.react.bridge.JavaOnlyMap;
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import com.facebook.react.bridge.ReadableMap;
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import com.facebook.react.bridge.ReadableMapKeySetIterator;
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import com.facebook.react.uimanager.ReactStylesDiffMap;
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import com.facebook.react.uimanager.UIImplementation;
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import java.util.HashMap;
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import java.util.Map;
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import javax.annotation.Nullable;
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/**
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* Animated node that represents view properties. There is a special handling logic implemented for
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* the nodes of this type in {@link NativeAnimatedNodesManager} that is responsible for extracting
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* a map of updated properties, which can be then passed down to the view.
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*/
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/*package*/ class PropsAnimatedNode extends AnimatedNode {
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/*package*/ int mConnectedViewTag = -1;
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private final NativeAnimatedNodesManager mNativeAnimatedNodesManager;
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private final Map<String, Integer> mPropMapping;
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PropsAnimatedNode(ReadableMap config, NativeAnimatedNodesManager nativeAnimatedNodesManager) {
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ReadableMap props = config.getMap("props");
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ReadableMapKeySetIterator iter = props.keySetIterator();
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mPropMapping = new HashMap<>();
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while (iter.hasNextKey()) {
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String propKey = iter.nextKey();
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int nodeIndex = props.getInt(propKey);
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mPropMapping.put(propKey, nodeIndex);
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}
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mNativeAnimatedNodesManager = nativeAnimatedNodesManager;
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}
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public final void updateView(UIImplementation uiImplementation) {
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if (mConnectedViewTag == -1) {
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throw new IllegalStateException("Node has not been attached to a view");
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}
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JavaOnlyMap propsMap = new JavaOnlyMap();
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for (Map.Entry<String, Integer> entry : mPropMapping.entrySet()) {
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@Nullable AnimatedNode node = mNativeAnimatedNodesManager.getNodeById(entry.getValue());
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if (node == null) {
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throw new IllegalArgumentException("Mapped property node does not exists");
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} else if (node instanceof StyleAnimatedNode) {
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((StyleAnimatedNode) node).collectViewUpdates(propsMap);
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} else if (node instanceof ValueAnimatedNode) {
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propsMap.putDouble(entry.getKey(), ((ValueAnimatedNode) node).getValue());
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} else {
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throw new IllegalArgumentException("Unsupported type of node used in property node " +
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node.getClass());
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}
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}
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// TODO: Reuse propsMap and stylesDiffMap objects - note that in subsequent animation steps
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// for a given node most of the time we will be creating the same set of props (just with
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// different values). We can take advantage on that and optimize the way we allocate property
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// maps (we also know that updating view props doesn't retain a reference to the styles object).
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uiImplementation.synchronouslyUpdateViewOnUIThread(
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mConnectedViewTag,
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new ReactStylesDiffMap(propsMap));
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}
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}
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