jagomf

import 'package:flutter/material.dart';

class InteractiveViewerOverlay extends StatefulWidget {
  final Widget child;
  final double maxScale;

  const InteractiveViewerOverlay({
    Key key,
    @required this.child,
    this.maxScale,

jagomf

import 'dart:math' as math;

import 'package:flutter/foundation.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/widgets.dart';

/// Signature for a function that creates a [TileSize] for a given index.
typedef TileSize IndexedTileSizeBuilder(int index);

/// Creates grid layouts with a fixed number of spans in the cross axis.