jpmschweitzerandClaude Opus 4.8
ac387796c8
parseSvgColor → packed ARGB (#rgb/#rgba/#rrggbb/#rrggbbaa, rgb()/rgba() integer or %, common names, none/transparent → 0x0); null on unrecognised so the caller can inherit. parseTransform → a composed 2-D Affine (translate/scale/rotate[/about-point]/matrix/skew), applied left-to-right. Both tolerant and Flutter-free, covered by dart test (22 cases). These feed the typed node model next. No user-visible behaviour yet. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
66 lines
2.2 KiB
Dart
66 lines
2.2 KiB
Dart
import 'package:clide/src/svg/svg_transform.dart';
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import 'package:test/test.dart';
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void main() {
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group('Affine', () {
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test('apply maps a point', () {
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final (x, y) = const Affine(2, 0, 0, 3, 5, 7).apply(1, 1);
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expect(x, 7); // 2*1 + 0 + 5
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expect(y, 10); // 3*1 + 0 + 7
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});
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test('multiply composes (this after other)', () {
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// translate(10,0) · scale(2): scale first, then translate.
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const t = Affine(1, 0, 0, 1, 10, 0);
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const s = Affine(2, 0, 0, 2, 0, 0);
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final (x, y) = t.multiply(s).apply(1, 1);
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expect(x, 12);
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expect(y, 2);
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});
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});
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group('parseTransform', () {
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test('empty / garbage → identity', () {
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expect(parseTransform(''), Affine.identity);
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expect(parseTransform('not a transform'), Affine.identity);
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});
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test('translate with one and two args', () {
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expect(parseTransform('translate(5,10)'), const Affine(1, 0, 0, 1, 5, 10));
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expect(parseTransform('translate(5)'), const Affine(1, 0, 0, 1, 5, 0));
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});
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test('scale uniform and non-uniform', () {
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expect(parseTransform('scale(2)'), const Affine(2, 0, 0, 2, 0, 0));
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expect(parseTransform('scale(2,3)'), const Affine(2, 0, 0, 3, 0, 0));
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});
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test('matrix is taken verbatim', () {
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expect(parseTransform('matrix(1,2,3,4,5,6)'), const Affine(1, 2, 3, 4, 5, 6));
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});
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test('rotate(90) turns +x into +y', () {
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final (x, y) = parseTransform('rotate(90)').apply(1, 0);
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expect(x, closeTo(0, 1e-9));
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expect(y, closeTo(1, 1e-9));
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});
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test('rotate about a point leaves that point fixed', () {
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final (x, y) = parseTransform('rotate(90, 1, 1)').apply(1, 1);
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expect(x, closeTo(1, 1e-9));
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expect(y, closeTo(1, 1e-9));
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});
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test('composes a list left-to-right, leftmost outermost', () {
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// translate(10,0) scale(2): point (1,1) → scale → (2,2) → translate → (12,2)
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final (x, y) = parseTransform('translate(10,0) scale(2)').apply(1, 1);
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expect(x, closeTo(12, 1e-9));
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expect(y, closeTo(2, 1e-9));
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});
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test('skips unknown functions but keeps the rest', () {
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expect(parseTransform('frobnicate(9) translate(3,4)'), const Affine(1, 0, 0, 1, 3, 4));
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});
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});
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}
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