inventree-app/lib/widget/progress.dart

import "dart:io";

import "package:flutter/material.dart";
import "package:flutter_overlay_loader/flutter_overlay_loader.dart";
import "package:inventree/app_colors.dart";
import "package:one_context/one_context.dart";


/*
 * A simplified linear progress bar widget,
 * with standardized color depiction
 */
Widget ProgressBar(
  double value,
{
  double maximum = 1.0
}) {

  double v = 0;

  if (value <= 0 || maximum <= 0) {
    v = 0;
  } else {
    v = value / maximum;
  }

  return LinearProgressIndicator(
    value: v,
    backgroundColor: Colors.grey,
    color: v >= 1 ? COLOR_SUCCESS : COLOR_WARNING,
  );
}


/*
 * Construct a circular progress indicator
 */
Widget progressIndicator() {

  return Center(
    child: CircularProgressIndicator()
  );
}


void showLoadingOverlay() {

  // Do not show overlay if running unit tests
  if (Platform.environment.containsKey("FLUTTER_TEST")) {
    return;
  }

  BuildContext? context = OneContext.hasContext ? OneContext().context : null;

  if (context == null) {
    return;
  }

  Loader.show(
    context,
    themeData: Theme.of(context).copyWith(colorScheme: ColorScheme.fromSwatch())
  );
}


void hideLoadingOverlay() {
  if (Loader.isShown) {
    Loader.hide();
  }
}