46 lines
1.3 KiB
Dart
46 lines
1.3 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_drawing_board/flutter_drawing_board.dart';
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import 'pdf_page_display.dart';
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/// Drawing overlay for annotating PDF pages.
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///
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/// Uses flutter_drawing_board to provide a paint canvas over the PDF.
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/// Only working in single-page mode.
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class PaintModeLayer extends StatelessWidget {
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final PdfPageDisplay pageDisplay;
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final DrawingController drawingController;
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const PaintModeLayer({
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super.key,
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required this.pageDisplay,
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required this.drawingController,
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});
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@override
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Widget build(BuildContext context) {
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return SizedBox.expand(
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child: LayoutBuilder(
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builder: (context, constraints) {
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final maxSize = Size(constraints.maxWidth, constraints.maxHeight);
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final (pageSize, _) = pageDisplay.calculateScaledPageSizes(maxSize);
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return DrawingBoard(
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controller: drawingController,
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background: SizedBox(
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width: pageSize.width,
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height: pageSize.height,
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child: pageDisplay,
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),
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boardConstrained: true,
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minScale: 1,
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maxScale: 3,
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alignment: Alignment.topRight,
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boardBoundaryMargin: EdgeInsets.zero,
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);
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},
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),
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);
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}
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}
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