18xchat/assets/Scripts/chat18x/ui/components/DialogBubble.ts

import {
  _decorator,
  Component,
  Label,
  Node,
  Overflow,
  Size,
  UITransform,
  view,
} from "cc";
import Tools from "../../utils/tools";
const { ccclass, property } = _decorator;

@ccclass("DialogBubble")
export class DialogBubble extends Component {
  @property(UITransform)
  bg: UITransform = null;
  @property(Label)
  content: Label = null;
  @property(UITransform)
  contentT: UITransform = null;

  fixMaxWidth: number;
  private loadingAnimationId: number = null;
  init(maxWidth?: number) {
    // 如果没有提供maxWidth，使用屏幕宽度的80%
    if (maxWidth === undefined) {
      this.fixMaxWidth = view.getVisibleSize().width * 0.8;
    } else {
      this.fixMaxWidth = maxWidth;
    }
  }

  updateBubbleContent(
    str: string,
    callback?: (actualHeight: number) => void,
    isLoading: boolean = false
  ) {
    // 停止之前的加载动画
    this.stopLoadingAnimation();

    this.content.overflow = Overflow.NONE;

    // 如果是加载状态，使用固定的"..."
    if (isLoading && str === "...") {
      this.content.string = "...";
      // 设置固定尺寸用于加载显示
      const contentWidth = 60;
      this.contentT.setContentSize(new Size(contentWidth, 40));
      this.bg.setContentSize(new Size(contentWidth + 30, 50));

      if (callback) {
        callback(40); // 返回固定高度
      }
      return;
    }

    // 设置文本内容
    this.content.string = str;

    // 计算最大宽度（估算）
    const lines = str.split("\n");
    let maxWidth = 0;

    for (const line of lines) {
      let lineWidth = 0;
      if (Tools.IsChinese(line)) {
        lineWidth = 30 * line.length;
      } else {
        lineWidth = 18 * line.length;
      }
      maxWidth = Math.max(maxWidth, lineWidth);
    }

    if (maxWidth > this.fixMaxWidth)
      this.content.overflow = Overflow.RESIZE_HEIGHT;
    // 限制最大宽度
    const contentWidth = Math.min(maxWidth, this.fixMaxWidth);

    // 设置内容区域宽度，让Label自动计算高度
    this.contentT.setContentSize(new Size(contentWidth, 0));
    this.bg.setContentSize(new Size(contentWidth + 37, 0));

    // 强制更新Label的渲染数据以获取正确的高度
    this.content.updateRenderData(true);

    // 等待一帧后获取Label的实际高度
    this.scheduleOnce(() => {
      const actualSize =
        this.content.node.getComponent(UITransform).contentSize;

      // 更新内容区域的实际大小
      //this.contentT.setContentSize(new Size(contentWidth, actualHeight));

      // 根据内容大小调整背景大小，添加适当的内边距
      //const bgHeight = actualHeight + 17;
      this.bg.setContentSize(new Size(actualSize.x + 40, actualSize.y + 30));

      // 回调通知实际高度
      if (callback) {
        callback(actualSize.y);
      }
    }, 0);

    // 返回预估的背景高度（用于同步计算）
    const estimatedHeight = Math.max(lines.length * 35 + 20, 60); // 最小高度60
    return estimatedHeight;
  }

  private stopLoadingAnimation() {
    // 预留方法，当前实现中不需要动画，但保留接口以备将来使用
  }
}