コード例 #1
0
  private void applyLayoutRecursive(ReactShadowNode toUpdate, int x, int y) {
    if (!toUpdate.isLayoutOnly() && toUpdate.getNativeParent() != null) {
      int tag = toUpdate.getReactTag();
      mUIViewOperationQueue.enqueueUpdateLayout(
          toUpdate.getNativeParent().getReactTag(),
          tag,
          x,
          y,
          toUpdate.getScreenWidth(),
          toUpdate.getScreenHeight());
      return;
    }

    for (int i = 0; i < toUpdate.getChildCount(); i++) {
      ReactShadowNode child = toUpdate.getChildAt(i);
      int childTag = child.getReactTag();
      if (mTagsWithLayoutVisited.get(childTag)) {
        continue;
      }
      mTagsWithLayoutVisited.put(childTag, true);

      int childX = child.getScreenX();
      int childY = child.getScreenY();

      childX += x;
      childY += y;

      applyLayoutRecursive(child, childX, childY);
    }
  }
コード例 #2
0
  /**
   * Handles an updateLayout call. All updateLayout calls are collected and dispatched at the end of
   * a batch because updateLayout calls to layout-only nodes can necessitate multiple updateLayout
   * calls for all its children.
   */
  public void handleUpdateLayout(ReactShadowNode node) {
    if (!ENABLED) {
      mUIViewOperationQueue.enqueueUpdateLayout(
          Assertions.assertNotNull(node.getParent()).getReactTag(),
          node.getReactTag(),
          node.getScreenX(),
          node.getScreenY(),
          node.getScreenWidth(),
          node.getScreenHeight());
      return;
    }

    applyLayoutBase(node);
  }