com.facebook.react.uimanager.events.ContentSizeChangeEvent.java Source code

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Here is the source code for com.facebook.react.uimanager.events.ContentSizeChangeEvent.java

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/*
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

package com.facebook.react.uimanager.events;

import com.facebook.react.bridge.Arguments;
import com.facebook.react.bridge.WritableMap;
import com.facebook.react.uimanager.PixelUtil;

/** Event dispatched when total width or height of a view's children changes */
public class ContentSizeChangeEvent extends Event<ContentSizeChangeEvent> {

    public static final String EVENT_NAME = "topContentSizeChange";

    private final int mWidth;
    private final int mHeight;

    public ContentSizeChangeEvent(int viewTag, int width, int height) {
        super(viewTag);
        mWidth = width;
        mHeight = height;
    }

    @Override
    public String getEventName() {
        return EVENT_NAME;
    }

    @Override
    public void dispatch(RCTEventEmitter rctEventEmitter) {
        WritableMap data = Arguments.createMap();
        data.putDouble("width", PixelUtil.toDIPFromPixel(mWidth));
        data.putDouble("height", PixelUtil.toDIPFromPixel(mHeight));
        rctEventEmitter.receiveEvent(getViewTag(), EVENT_NAME, data);
    }
}