initChartRenderer method

@override void initChartRenderer()

Implementation

@override
void initChartRenderer() {
  if (datas != null && datas!.isNotEmpty) {
    var t = datas![0];
    fixedLength =
        NumberUtil.getMaxDecimalLength(t.open, t.close, t.high, t.low);
  }

  // 初始化主图表渲染器
  if (isShowMainState) {
    double mainRectHeight =
        mainHeight ?? (mDisplayHeight * 0.6); // 使用自定义或默认高度
    mMainRect = Rect.fromLTRB(0, 0, mWidth, mainRectHeight); // 主图区域定义
    // print('[initChartRenderer] Main Renderer Initialized');
  } else {
    mMainRect = Rect.fromLTRB(0, 0, 0, 0); // 主图表高度设置为 0
  }

  mMainRenderer = MainRenderer(
    mMainRect,
    mMainMaxValue,
    mMainMinValue,
    mTopPadding,
    mainState,
    isLine,
    fixedLength,
    this.chartStyle,
    this.chartColors,
    this.scaleX,
    verticalTextAlignment,
    maDayList,
    trendLineState,
  );

  if (mVolRect != null) {
    double volRectHeight =
        secondaryHeight ?? (mDisplayHeight * 0.2); // 使用次图高度或默认值
    mVolRect = Rect.fromLTRB(
      0,
      mMainRect.bottom + mChildPadding,
      mWidth,
      mMainRect.bottom + mChildPadding + volRectHeight,
    );
    mVolRenderer = VolRenderer(
        mVolRect!,
        mVolMaxValue,
        mVolMinValue,
        mChildPadding,
        fixedLength,
        this.chartStyle,
        this.chartColors) as BaseChartRenderer?;
    // print(
    //     '[initChartRenderer] Volume Renderer Initialized: Rect = $mVolRect');
  }

  secondaryRenderers.clear();
  // double secondaryTop = mMainRect.bottom + (mVolRect?.height ?? 0) + mChildPadding;
  double secondaryTop =
      mVolRect?.bottom ?? mMainRect.bottom; // 基于成交量图的底部作为初始位置

  for (int i = 0; i < secondaryStates.length; i++) {
    double secondaryRectHeight = secondaryHeight ??
        (mDisplayHeight * 0.2) - mChildPadding; // 使用自定义或默认高度

    double newSecondaryRectHeight = i * (secondaryRectHeight + mChildPadding);
    if (i == 0) newSecondaryRectHeight = newSecondaryRectHeight + 10;

    Rect secondaryRect = Rect.fromLTRB(
      0,
      secondaryTop + newSecondaryRectHeight, // 累积次图高度
      mWidth,
      secondaryTop + ((i + 1) * secondaryRectHeight) + (i * mChildPadding),
    );

    // 这里从BaseChartPainter里拿对应的 max/min Map
    SecondaryState st = secondaryStates[i];
    double secMax = mSecondaryMaxMap[st] ?? 0;
    double secMin = mSecondaryMinMap[st] ?? 0;

    SecondaryRenderer renderer = SecondaryRenderer(
      secondaryRect,
      secondaryRect,
      secMax,
      secMin,
      mChildPadding,
      secondaryStates[i],
      fixedLength,
      this.chartStyle,
      this.chartColors,
    );

    secondaryRenderers.add(renderer);
    // print('[initChartRenderer] Initialized Secondary Renderer [$i]: '
    //     'State: ${secondaryStates[i]}, Rect: $secondaryRect');
  }

  // print(
  //     '[initChartRenderer] Secondary Renderers Count: ${secondaryRenderers.length}');
}