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import 'package:flutter/material.dart'; | |
class InteractiveViewerOverlay extends StatefulWidget { | |
final Widget child; | |
final double maxScale; | |
const InteractiveViewerOverlay({ | |
Key key, | |
@required this.child, | |
this.maxScale, |
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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. |