14 lines
473 B
Dart
14 lines
473 B
Dart
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import 'package:flutter/material.dart';
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Offset translateScreenToDocumentPoint(Offset pt, double scale, Offset offset) {
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return pt.translate(-offset.dx, -offset.dy).scale(1 / scale, 1 / scale);
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}
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Offset translateDocumentToScreenPoint(Offset pt, double scale, Offset offset) {
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return pt.scale(scale, scale).translate(offset.dx, offset.dy);
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}
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double calcPageDependentScale(double scale, Rect page, Size canvasSize) {
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return scale * (canvasSize.width / page.width);
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}
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