buildHeader method

Widget buildHeader(BuildContext context)

Implementation

Widget buildHeader(BuildContext context) {
  return RepaintBoundary(
    child: Container(
      color: widget.headerBackgroundColor,
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          Column(
            verticalDirection: VerticalDirection.up,
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              if (widget.loadingProgress != null ||
                  widget.loadingProgressIndeterminate)
                SizedBox(
                  // to make it float
                  height: 0,
                  child: Stack(
                    clipBehavior: Clip.none,
                    fit: StackFit.passthrough,
                    children: [
                      Positioned(
                        left: 0,
                        right: 0,
                        child: LinearProgressIndicator(
                          backgroundColor: Colors.transparent,
                          value: widget.loadingProgressIndeterminate
                              ? null
                              : widget.loadingProgress,
                          showSparks: false,
                        ),
                      ),
                    ],
                  ),
                ),
              Column(
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: [
                    for (var i = 0; i < widget.headers.length; i++)
                      Data.inherit(
                        data: ScaffoldBarData(
                          childIndex: i,
                          childrenCount: widget.headers.length,
                        ),
                        child: widget.headers[i],
                      ),
                  ]),
            ],
          ),
          if (widget.loadingProgress != null && widget.showLoadingSparks)
            SizedBox(
              // to make it float
              height: 0,
              child: Stack(
                clipBehavior: Clip.none,
                fit: StackFit.passthrough,
                children: [
                  Positioned(
                    left: 0,
                    right: 0,
                    child: LinearProgressIndicator(
                      backgroundColor: Colors.transparent,
                      value: widget.loadingProgressIndeterminate
                          ? null
                          : widget.loadingProgress,
                      showSparks: true,
                    ),
                  ),
                ],
              ),
            ),
        ],
      ),
    ),
  );
}