107 lines
4.1 KiB
Dart
107 lines
4.1 KiB
Dart
import 'package:aves/services/geocoding_service.dart';
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import 'package:flutter/foundation.dart';
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class CatalogMetadata {
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final int? contentId, dateMillis;
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final bool isAnimated, isGeotiff, is360, isMultiPage;
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bool isFlipped;
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int? rotationDegrees;
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final String? mimeType, xmpSubjects, xmpTitleDescription;
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double? latitude, longitude;
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Address? address;
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static const double _precisionErrorTolerance = 1e-9;
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static const _isAnimatedMask = 1 << 0;
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static const _isFlippedMask = 1 << 1;
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static const _isGeotiffMask = 1 << 2;
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static const _is360Mask = 1 << 3;
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static const _isMultiPageMask = 1 << 4;
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CatalogMetadata({
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this.contentId,
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this.mimeType,
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this.dateMillis,
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this.isAnimated = false,
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this.isFlipped = false,
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this.isGeotiff = false,
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this.is360 = false,
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this.isMultiPage = false,
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this.rotationDegrees,
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this.xmpSubjects,
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this.xmpTitleDescription,
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double? latitude,
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double? longitude,
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}) {
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// Geocoder throws an `IllegalArgumentException` when a coordinate has a funky value like `1.7056881853375E7`
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// We also exclude zero coordinates, taking into account precision errors (e.g. {5.952380952380953e-11,-2.7777777777777777e-10}),
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// but Flutter's `precisionErrorTolerance` (1e-10) is slightly too lenient for this case.
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if (latitude != null && longitude != null && (latitude.abs() > _precisionErrorTolerance || longitude.abs() > _precisionErrorTolerance)) {
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// funny case: some files have latitude and longitude reverse
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// (e.g. a Japanese location at lat~=133 and long~=34, which is a valid longitude but an invalid latitude)
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// so we should check and assign both coordinates at once
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if (latitude >= -90.0 && latitude <= 90.0 && longitude >= -180.0 && longitude <= 180.0) {
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this.latitude = latitude;
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this.longitude = longitude;
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}
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}
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}
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CatalogMetadata copyWith({
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int? contentId,
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String? mimeType,
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int? dateMillis,
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bool? isMultiPage,
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int? rotationDegrees,
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}) {
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return CatalogMetadata(
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contentId: contentId ?? this.contentId,
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mimeType: mimeType ?? this.mimeType,
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dateMillis: dateMillis ?? this.dateMillis,
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isAnimated: isAnimated,
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isFlipped: isFlipped,
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isGeotiff: isGeotiff,
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is360: is360,
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isMultiPage: isMultiPage ?? this.isMultiPage,
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rotationDegrees: rotationDegrees ?? this.rotationDegrees,
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xmpSubjects: xmpSubjects,
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xmpTitleDescription: xmpTitleDescription,
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latitude: latitude,
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longitude: longitude,
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);
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}
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factory CatalogMetadata.fromMap(Map map) {
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final flags = map['flags'] ?? 0;
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return CatalogMetadata(
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contentId: map['contentId'],
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mimeType: map['mimeType'],
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dateMillis: map['dateMillis'] ?? 0,
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isAnimated: flags & _isAnimatedMask != 0,
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isFlipped: flags & _isFlippedMask != 0,
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isGeotiff: flags & _isGeotiffMask != 0,
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is360: flags & _is360Mask != 0,
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isMultiPage: flags & _isMultiPageMask != 0,
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// `rotationDegrees` should default to `sourceRotationDegrees`, not 0
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rotationDegrees: map['rotationDegrees'],
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xmpSubjects: map['xmpSubjects'] ?? '',
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xmpTitleDescription: map['xmpTitleDescription'] ?? '',
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latitude: map['latitude'],
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longitude: map['longitude'],
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);
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}
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Map<String, dynamic> toMap() => {
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'contentId': contentId,
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'mimeType': mimeType,
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'dateMillis': dateMillis,
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'flags': (isAnimated ? _isAnimatedMask : 0) | (isFlipped ? _isFlippedMask : 0) | (isGeotiff ? _isGeotiffMask : 0) | (is360 ? _is360Mask : 0) | (isMultiPage ? _isMultiPageMask : 0),
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'rotationDegrees': rotationDegrees,
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'xmpSubjects': xmpSubjects,
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'xmpTitleDescription': xmpTitleDescription,
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'latitude': latitude,
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'longitude': longitude,
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};
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@override
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String toString() => '$runtimeType#${shortHash(this)}{contentId=$contentId, mimeType=$mimeType, dateMillis=$dateMillis, isAnimated=$isAnimated, isFlipped=$isFlipped, isGeotiff=$isGeotiff, is360=$is360, isMultiPage=$isMultiPage, rotationDegrees=$rotationDegrees, latitude=$latitude, longitude=$longitude, xmpSubjects=$xmpSubjects, xmpTitleDescription=$xmpTitleDescription}';
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}
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