aves/lib/model/multipage.dart
2021-04-26 17:15:32 +09:00

116 lines
3.4 KiB
Dart

import 'package:aves/model/entry.dart';
import 'package:aves/ref/mime_types.dart';
import 'package:aves/services/services.dart';
import 'package:flutter/foundation.dart';
class MultiPageInfo {
final AvesEntry mainEntry;
final List<SinglePageInfo> pages;
int get pageCount => pages.length;
MultiPageInfo({
@required this.mainEntry,
this.pages,
}) {
if (pages.isNotEmpty) {
pages.sort();
// make sure there is a page marked as default
if (defaultPage == null) {
final firstPage = pages.removeAt(0);
pages.insert(0, firstPage.copyWith(isDefault: true));
}
}
}
factory MultiPageInfo.fromPageMaps(AvesEntry mainEntry, List<Map> pageMaps) {
return MultiPageInfo(
mainEntry: mainEntry,
pages: pageMaps.map((page) => SinglePageInfo.fromMap(page)).toList(),
);
}
SinglePageInfo get defaultPage => pages.firstWhere((page) => page.isDefault, orElse: () => null);
SinglePageInfo getByIndex(int index) => pages.firstWhere((page) => page.index == index, orElse: () => null);
SinglePageInfo getById(int pageId) => pages.firstWhere((page) => page.pageId == pageId, orElse: () => null);
Future<void> extractMotionPhotoVideo() async {
final videoPage = pages.firstWhere((page) => page.isVideo, orElse: () => null);
if (videoPage != null && videoPage.uri == null) {
final fields = await embeddedDataService.extractMotionPhotoVideo(mainEntry);
final extractedUri = fields != null ? fields['uri'] as String : null;
if (extractedUri != null) {
final pageIndex = pages.indexOf(videoPage);
pages.removeAt(pageIndex);
pages.insert(
pageIndex,
videoPage.copyWith(
uri: extractedUri,
));
}
}
}
@override
String toString() => '$runtimeType#${shortHash(this)}{mainEntry=$mainEntry, pages=$pages}';
}
class SinglePageInfo implements Comparable<SinglePageInfo> {
final int index, pageId;
final bool isDefault;
final String uri, mimeType;
final int width, height, rotationDegrees, durationMillis;
const SinglePageInfo({
this.index,
this.pageId,
this.isDefault,
this.uri,
this.mimeType,
this.width,
this.height,
this.rotationDegrees,
this.durationMillis,
});
SinglePageInfo copyWith({
bool isDefault,
String uri,
}) {
return SinglePageInfo(
index: index,
pageId: pageId,
isDefault: isDefault ?? this.isDefault,
uri: uri ?? this.uri,
mimeType: mimeType,
width: width,
height: height,
rotationDegrees: rotationDegrees,
durationMillis: durationMillis,
);
}
factory SinglePageInfo.fromMap(Map map) {
final index = map['page'] as int;
return SinglePageInfo(
index: index,
pageId: index,
isDefault: map['isDefault'] as bool ?? false,
mimeType: map['mimeType'] as String,
width: map['width'] as int ?? 0,
height: map['height'] as int ?? 0,
rotationDegrees: map['rotationDegrees'] as int,
durationMillis: map['durationMillis'] as int,
);
}
bool get isVideo => MimeTypes.isVideo(mimeType);
@override
String toString() => '$runtimeType#${shortHash(this)}{index=$index, pageId=$pageId, isDefault=$isDefault, uri=$uri, mimeType=$mimeType, width=$width, height=$height, rotationDegrees=$rotationDegrees, durationMillis=$durationMillis}';
@override
int compareTo(SinglePageInfo other) => index.compareTo(other.index);
}