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Init metadata directly in initState

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Ming Ming 2021-06-20 19:49:08 +08:00
parent 9c08e5a635
commit bf0e60c474
1 changed files with 48 additions and 70 deletions
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118
lib/widget/viewer_detail_pane.dart
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@ -9,7 +9,6 @@ import 'package:logging/logging.dart';
import 'package:nc_photos/account.dart';
import 'package:nc_photos/double_extension.dart';
import 'package:nc_photos/entity/album.dart';
import 'package:nc_photos/entity/exif.dart';
import 'package:nc_photos/entity/file.dart';
import 'package:nc_photos/entity/file/data_source.dart';
import 'package:nc_photos/exception_util.dart' as exception_util;
@ -50,10 +49,9 @@ class _ViewerDetailPaneState extends State<ViewerDetailPane> {
_log.info("[initState] Metadata missing in File");
} else {
_log.info("[initState] Metadata exists in File");
WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
_updateMetadata(widget.file.metadata.imageWidth,
widget.file.metadata.imageHeight, widget.file.metadata.exif);
});
if (widget.file.metadata.exif != null) {
_initMetadata();
}
}
}
@ -65,8 +63,10 @@ class _ViewerDetailPaneState extends State<ViewerDetailPane> {
String sizeSubStr = "";
const space = " ";
if (_width != null && _height != null) {
final pixelCount = _width * _height;
if (widget.file.metadata?.imageWidth != null &&
widget.file.metadata?.imageHeight != null) {
final pixelCount =
widget.file.metadata.imageWidth * widget.file.metadata.imageHeight;
if (pixelCount >= 500000) {
final mpCount = pixelCount / 1000000.0;
sizeSubStr += AppLocalizations.of(context)
@ -131,13 +131,15 @@ class _ViewerDetailPaneState extends State<ViewerDetailPane> {
),
title: Text("$dateStr $timeStr"),
),
if (_width != null && _height != null)
if (widget.file.metadata?.imageWidth != null &&
widget.file.metadata?.imageHeight != null)
ListTile(
leading: Icon(
Icons.aspect_ratio,
color: AppTheme.getSecondaryTextColor(context),
),
title: Text("$_width x $_height"),
title: Text(
"${widget.file.metadata.imageWidth} x ${widget.file.metadata.imageHeight}"),
subtitle: Text(sizeSubStr),
)
else
@ -170,6 +172,43 @@ class _ViewerDetailPaneState extends State<ViewerDetailPane> {
);
}
/// Convert EXIF data to readable format
void _initMetadata() {
final exif = widget.file.metadata.exif;
_log.info("[_initMetadata] $exif");
if (exif.make != null && exif.model != null) {
_model = "${exif.make} ${exif.model}";
}
if (exif.fNumber != null) {
_fNumber = exif.fNumber.toDouble();
}
if (exif.exposureTime != null) {
if (exif.exposureTime.denominator == 1) {
_exposureTime = exif.exposureTime.numerator.toString();
} else {
_exposureTime = exif.exposureTime.toString();
}
}
if (exif.focalLength != null) {
_focalLength = exif.focalLength.toDouble();
}
if (exif.isoSpeedRatings != null) {
_isoSpeedRatings = exif.isoSpeedRatings;
}
if (exif.gpsLatitudeRef != null &&
exif.gpsLatitude != null &&
exif.gpsLongitudeRef != null &&
exif.gpsLongitude != null) {
final lat = _gpsDmsToDouble(exif.gpsLatitude) *
(exif.gpsLatitudeRef == "S" ? -1 : 1);
final lng = _gpsDmsToDouble(exif.gpsLongitude) *
(exif.gpsLongitudeRef == "W" ? -1 : 1);
_log.fine("GPS: ($lat, $lng)");
_gps = Tuple2(lat, lng);
}
}
void _onAddToAlbumPressed(BuildContext context) {
showDialog(
context: context,
@ -251,64 +290,6 @@ class _ViewerDetailPaneState extends State<ViewerDetailPane> {
}
}
void _updateMetadata(int imageWidth, int imageHeight, Exif exif) {
if (imageWidth != null && imageHeight != null) {
setState(() {
_width = imageWidth;
_height = imageHeight;
});
}
if (exif != null) {
_updateMetadataExif(exif);
}
}
void _updateMetadataExif(Exif exif) {
_log.info("[_updateMetadataExif] $exif");
if (exif.make != null && exif.model != null) {
setState(() {
_model = "${exif.make} ${exif.model}";
});
}
if (exif.fNumber != null) {
setState(() {
_fNumber = exif.fNumber.toDouble();
});
}
if (exif.exposureTime != null) {
setState(() {
if (exif.exposureTime.denominator == 1) {
_exposureTime = exif.exposureTime.numerator.toString();
} else {
_exposureTime = exif.exposureTime.toString();
}
});
}
if (exif.focalLength != null) {
setState(() {
_focalLength = exif.focalLength.toDouble();
});
}
if (exif.isoSpeedRatings != null) {
setState(() {
_isoSpeedRatings = exif.isoSpeedRatings;
});
}
if (exif.gpsLatitudeRef != null &&
exif.gpsLatitude != null &&
exif.gpsLongitudeRef != null &&
exif.gpsLongitude != null) {
final lat = _gpsDmsToDouble(exif.gpsLatitude) *
(exif.gpsLatitudeRef == "S" ? -1 : 1);
final lng = _gpsDmsToDouble(exif.gpsLongitude) *
(exif.gpsLongitudeRef == "W" ? -1 : 1);
_log.fine("GPS: ($lat, $lng)");
setState(() {
_gps = Tuple2(lat, lng);
});
}
}
static double _gpsDmsToDouble(List<Rational> dms) {
double product = dms[0].toDouble();
if (dms.length > 1) {
@ -353,9 +334,6 @@ class _ViewerDetailPaneState extends State<ViewerDetailPane> {
}
}
// metadata
int _width;
int _height;
// EXIF data
String _model;
double _fNumber;