46 lines
1.6 KiB
Dart
46 lines
1.6 KiB
Dart
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// Proves the pen-first slide export geometry: contain-fit centering and the
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// normalized->slide point mapping that replaces the old misaligned exporter.
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import 'dart:ui' show Rect, Size;
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import 'package:flutter_test/flutter_test.dart';
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import 'package:badnote/editor/pdf/slide_export.dart';
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void main() {
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test('wide image is letterboxed top/bottom on a square page', () {
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final r = slideDrawRect(const Size(1000, 1000), const Size(1600, 900));
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// scale = min(1000/1600, 1000/900) = 0.625 -> 1000 x 562.5, centered.
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expect(r.width, closeTo(1000, 1e-6));
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expect(r.height, closeTo(562.5, 1e-6));
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expect(r.left, closeTo(0, 1e-6));
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expect(r.top, closeTo((1000 - 562.5) / 2, 1e-6));
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});
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test('tall image is pillarboxed left/right', () {
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final r = slideDrawRect(const Size(1000, 1000), const Size(900, 1600));
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expect(r.height, closeTo(1000, 1e-6));
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expect(r.width, closeTo(562.5, 1e-6));
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expect(r.top, closeTo(0, 1e-6));
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expect(r.left, closeTo((1000 - 562.5) / 2, 1e-6));
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});
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test('normalized corners map to the draw rect corners', () {
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final r = const Rect.fromLTWH(100, 50, 800, 600);
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final tl = normToSlide(0, 0, r);
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final br = normToSlide(1, 1, r);
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final mid = normToSlide(0.5, 0.5, r);
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expect(tl.dx, closeTo(100, 1e-9));
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expect(tl.dy, closeTo(50, 1e-9));
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expect(br.dx, closeTo(900, 1e-9));
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expect(br.dy, closeTo(650, 1e-9));
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expect(mid.dx, closeTo(500, 1e-9));
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expect(mid.dy, closeTo(350, 1e-9));
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});
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test('stroke width scales with the draw width', () {
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final r = const Rect.fromLTWH(0, 0, 800, 600);
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expect(slideStrokeWidth(0.01, r), closeTo(8, 1e-9));
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});
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}
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