/**
 * Copyright (c) 2015-present, Horcrux.
 * All rights reserved.
 *
 * This source code is licensed under the MIT-style license found in the
 * LICENSE file in the root directory of this source tree.
 */


package com.horcrux.svg;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;

import com.facebook.react.uimanager.LayoutShadowNode;
import com.facebook.react.uimanager.UIViewOperationQueue;

/**
 * Shadow node for RNSVG virtual tree root - RNSVGSvgView
 */
public class RNSVGSvgViewShadowNode extends LayoutShadowNode {

    @Override
    public boolean isVirtual() {
        return false;
    }

    @Override
    public boolean isVirtualAnchor() {
        return true;
    }

    @Override
    public void onCollectExtraUpdates(UIViewOperationQueue uiUpdater) {
        super.onCollectExtraUpdates(uiUpdater);
        uiUpdater.enqueueUpdateExtraData(getReactTag(), drawOutput());
    }

    private Object drawOutput() {
        // TODO(7255985): Use TextureView and pass Svg from the view to draw on it asynchronously
        // instead of passing the bitmap (which is inefficient especially in terms of memory usage)
        Bitmap bitmap = Bitmap.createBitmap(
            (int) getLayoutWidth(),
            (int) getLayoutHeight(),
            Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        Paint paint = new Paint();
        for (int i = 0; i < getChildCount(); i++) {
            RNSVGVirtualNode child = (RNSVGVirtualNode) getChildAt(i);
            child.draw(canvas, paint, 1f);
            child.markUpdateSeen();
        }
        return bitmap;
    }
}