RefreshLoader method

Implementation

Widget RefreshLoader(
  BuildContext context,
  Widget child,
  IndicatorController controller,
) {
  return AnimatedBuilder(
    animation: controller,
    builder: (context, _) {
      final refreshProgress = controller.value.clamp(0.0, 1.0);
      final isRefreshing = controller.isLoading || controller.isComplete;
      final isPulling = refreshProgress > 0 && !isRefreshing;

      final currentStatus = _getRefreshStatus(refreshProgress, isRefreshing);
      if (currentStatus != _refreshStatus &&
          (_refreshStatus != DDSRefreshStatus.completed &&
              _refreshStatus != DDSRefreshStatus.failed)) {
        WidgetsBinding.instance.addPostFrameCallback((_) {
          if (mounted) {
            setState(() {
              _refreshStatus = currentStatus;
            });
            _executeStateAction(currentStatus);
          }
        });
      }

      return Stack(
        children: [
          if (isPulling ||
              isRefreshing ||
              _refreshStatus == DDSRefreshStatus.completed ||
              _refreshStatus == DDSRefreshStatus.failed)
            Positioned(
              top: 0,
              left: 0,
              right: 0,
              height: widget.refreshTriggerThreshold,
              child: Container(
                height: widget.refreshTriggerThreshold,
                color: widget.loaderBackgroundColor ?? Colors.transparent,
                padding: EdgeInsets.only(
                  top: widget.loaderPaddingTop,
                  bottom: widget.loaderPaddingBottom,
                ),
                child: Center(
                  child: _buildRefreshLoader(
                    rotationProgress: isPulling ? refreshProgress : null,
                  ),
                ),
              ),
            ),
          Transform.translate(
            offset:
                Offset(0, refreshProgress * widget.refreshTriggerThreshold),
            child: widget.enableBoxShadow && refreshProgress > 0
                ? Container(
                    decoration: BoxDecoration(
                      boxShadow: [
                        BoxShadow(
                          color:
                              Theme.of(context).brightness == Brightness.dark
                                  ? Colors.white
                                      .withOpacity(0.1 * refreshProgress)
                                  : Colors.black
                                      .withOpacity(0.2 * refreshProgress),
                          blurRadius: 10 * refreshProgress,
                          offset: Offset(0, -5 * refreshProgress),
                          spreadRadius: 0,
                        ),
                      ],
                    ),
                    child: Container(
                      decoration: BoxDecoration(
                        color: Theme.of(context).scaffoldBackgroundColor,
                        borderRadius: BorderRadius.only(
                          topLeft: Radius.circular(refreshProgress * 30),
                          topRight: Radius.circular(refreshProgress * 30),
                        ),
                      ),
                      child: ClipRRect(
                        borderRadius: BorderRadius.only(
                          topLeft: Radius.circular(refreshProgress * 20),
                          topRight: Radius.circular(refreshProgress * 20),
                        ),
                        child: child,
                      ),
                    ),
                  )
                : Container(
                    decoration: BoxDecoration(
                      color: Theme.of(context).scaffoldBackgroundColor,
                      borderRadius: BorderRadius.only(
                        topLeft: Radius.circular(refreshProgress * 30),
                        topRight: Radius.circular(refreshProgress * 30),
                      ),
                    ),
                    child: ClipRRect(
                      borderRadius: BorderRadius.only(
                        topLeft: Radius.circular(refreshProgress * 20),
                        topRight: Radius.circular(refreshProgress * 20),
                      ),
                      child: child,
                    ),
                  ),
          ),
        ],
      );
    },
  );
}