info: improved XMP titles & keys

lib/utils/brand_colors.dart

@@ -0,0 +1,21 @@
+import 'package:flutter/painting.dart';
+
+class BrandColors {
+  static const Color adobeIllustrator = Color(0xFFFF9B00);
+  static const Color adobePhotoshop = Color(0xFF2DAAFF);
+  static const Color android = Color(0xFF3DDC84);
+  static const Color flutter = Color(0xFF47D1FD);
+
+  static Color get(String text) {
+    if (text != null) {
+      switch (text.toLowerCase()) {
+        case 'illustrator':
+          return adobeIllustrator;
+        case 'photoshop':
+        case 'lightroom':
+          return adobePhotoshop;
+      }
+    }
+    return null;
+  }
+}

lib/utils/constants.dart

@@ -3,9 +3,6 @@ import 'package:flutter/painting.dart';
 import 'package:tuple/tuple.dart';
 
 class Constants {
-  static const Color androidGreen = Color(0xFF3DDC84);
-  static const Color flutterBlue = Color(0xFF47D1FD);
-
   // as of Flutter v1.22.3, overflowing `Text` miscalculates height and some text (e.g. 'Å') is clipped
   // so we give it a `strutStyle` with a slightly larger height
   static const overflowStrutStyle = StrutStyle(height: 1.3);

lib/utils/xmp.dart

@@ -0,0 +1,27 @@
+class XMP {
+  static const namespaceSeparator = ':';
+  static const structFieldSeparator = '/';
+
+  static const Map<String, String> namespaces = {
+    'Camera': 'Camera',
+    'crs': 'Camera Raw Settings',
+    'dc': 'Dublin Core',
+    'exif': 'Exif',
+    'GIMP': 'GIMP',
+    'illustrator': 'Illustrator',
+    'Iptc4xmpCore': 'IPTC Core',
+    'lr': 'Lightroom',
+    'MicrosoftPhoto': 'Microsoft Photo',
+    'pdf': 'PDF',
+    'pdfx': 'PDF/X',
+    'photomechanic': 'Photo Mechanic',
+    'photoshop': 'Photoshop',
+    'tiff': 'TIFF',
+    'xmp': 'Basic',
+    'xmpBJ': 'Basic Job Ticket',
+    'xmpDM': 'Dynamic Media',
+    'xmpMM': 'Media Management',
+    'xmpRights': 'Rights Management',
+    'xmpTPg': 'Paged-Text',
+  };
+}

lib/widgets/about/licenses.dart

@@ -1,3 +1,4 @@
+import 'package:aves/utils/brand_colors.dart';
 import 'package:aves/utils/constants.dart';
 import 'package:aves/widgets/common/aves_expansion_tile.dart';
 import 'package:aves/widgets/common/icons.dart';
@@ -51,13 +52,13 @@ class _LicensesState extends State<Licenses> {
             SizedBox(height: 16),
             AvesExpansionTile(
               title: 'Android Libraries',
-              color: Constants.androidGreen,
+              color: BrandColors.android,
               expandedNotifier: _expandedNotifier,
               children: _platform.map((package) => LicenseRow(package)).toList(),
             ),
             AvesExpansionTile(
               title: 'Flutter Packages',
-              color: Constants.flutterBlue,
+              color: BrandColors.flutter,
               expandedNotifier: _expandedNotifier,
               children: _flutter.map((package) => LicenseRow(package)).toList(),
             ),

lib/widgets/fullscreen/info/info_page.dart

@@ -6,7 +6,7 @@ import 'package:aves/widgets/common/data_providers/media_query_data_provider.dar
 import 'package:aves/widgets/common/icons.dart';
 import 'package:aves/widgets/fullscreen/info/basic_section.dart';
 import 'package:aves/widgets/fullscreen/info/location_section.dart';
-import 'package:aves/widgets/fullscreen/info/metadata_section.dart';
+import 'package:aves/widgets/fullscreen/info/metadata/metadata_section.dart';
 import 'package:aves/widgets/fullscreen/info/notifications.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';

lib/widgets/fullscreen/info/metadata/metadata_section.dart

@@ -2,14 +2,15 @@ import 'dart:collection';
 
 import 'package:aves/model/image_entry.dart';
 import 'package:aves/services/metadata_service.dart';
+import 'package:aves/utils/brand_colors.dart';
 import 'package:aves/utils/color_utils.dart';
 import 'package:aves/utils/constants.dart';
 import 'package:aves/utils/durations.dart';
 import 'package:aves/widgets/common/aves_expansion_tile.dart';
-import 'package:aves/widgets/common/highlight_title.dart';
 import 'package:aves/widgets/common/icons.dart';
 import 'package:aves/widgets/fullscreen/info/common.dart';
-import 'package:aves/widgets/fullscreen/info/metadata_thumbnail.dart';
+import 'package:aves/widgets/fullscreen/info/metadata/metadata_thumbnail.dart';
+import 'package:aves/widgets/fullscreen/info/metadata/xmp_tile.dart';
 import 'package:collection/collection.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
@@ -121,12 +122,17 @@ class _MetadataSectionSliverState extends State<MetadataSectionSliver> with Auto
   }
 
   Widget _buildDirTile(String title, _MetadataDirectory dir) {
-    if (dir.name == xmpDirectory) {
-      return _buildXmpDirTile(dir);
+    final dirName = dir.name;
+    if (dirName == xmpDirectory) {
+      return XmpDirTile(
+        entry: entry,
+        tags: dir.tags,
+        expandedNotifier: _expandedDirectoryNotifier,
+      );
     }
     Widget thumbnail;
     final prefixChildren = <Widget>[];
-    switch (dir.name) {
+    switch (dirName) {
       case exifThumbnailDirectory:
         thumbnail = MetadataThumbnails(source: MetadataThumbnailSource.exif, entry: entry);
         break;
@@ -150,7 +156,7 @@ class _MetadataSectionSliverState extends State<MetadataSectionSliver> with Auto
 
     return AvesExpansionTile(
       title: title,
-      color: stringToColor(dir.name),
+      color: BrandColors.get(dirName) ?? stringToColor(dirName),
       expandedNotifier: _expandedDirectoryNotifier,
       children: [
         if (prefixChildren.isNotEmpty) Wrap(children: prefixChildren),
@@ -163,43 +169,6 @@ class _MetadataSectionSliverState extends State<MetadataSectionSliver> with Auto
     );
   }
 
-  Widget _buildXmpDirTile(_MetadataDirectory dir) {
-    final thumbnail = MetadataThumbnails(source: MetadataThumbnailSource.xmp, entry: entry);
-    final byNamespace = SplayTreeMap.of(
-      groupBy<MapEntry<String, String>, String>(dir.tags.entries, (kv) {
-        final fullKey = kv.key;
-        final i = fullKey.indexOf(':');
-        if (i == -1) return '';
-        return fullKey.substring(0, i);
-      }),
-      compareAsciiUpperCase,
-    );
-    return AvesExpansionTile(
-      title: dir.name,
-      expandedNotifier: _expandedDirectoryNotifier,
-      children: [
-        if (thumbnail != null) thumbnail,
-        Padding(
-          padding: EdgeInsets.only(left: 8, right: 8, bottom: 8),
-          child: Column(
-            crossAxisAlignment: CrossAxisAlignment.start,
-            children: byNamespace.entries.expand((kv) {
-              final ns = kv.key;
-              final hasNamespace = ns.isNotEmpty;
-              final i = hasNamespace ? ns.length + 1 : 0;
-              final entries = kv.value.map((kv) => MapEntry(kv.key.substring(i), kv.value)).toList();
-              entries.sort((a, b) => compareAsciiUpperCaseNatural(a.key, b.key));
-              return [
-                if (hasNamespace) HighlightTitle(ns),
-                InfoRowGroup(Map.fromEntries(entries), maxValueLength: Constants.infoGroupMaxValueLength),
-              ];
-            }).toList(),
-          ),
-        ),
-      ],
-    );
-  }
-
   void _onMetadataChanged() {
     _loadedMetadataUri.value = null;
     _metadata = {};
@@ -223,7 +192,7 @@ class _MetadataSectionSliverState extends State<MetadataSectionSliver> with Auto
 
         final rawTags = dirKV.value as Map ?? {};
         final tags = SplayTreeMap.of(Map.fromEntries(rawTags.entries.map((tagKV) {
-          final value = tagKV.value as String ?? '';
+          final value = (tagKV.value as String ?? '').trim();
           if (value.isEmpty) return null;
           final tagName = tagKV.key as String ?? '';
           return MapEntry(tagName, value);

lib/widgets/fullscreen/info/metadata/xmp_tile.dart

@@ -0,0 +1,78 @@
+import 'dart:collection';
+
+import 'package:aves/model/image_entry.dart';
+import 'package:aves/utils/brand_colors.dart';
+import 'package:aves/utils/constants.dart';
+import 'package:aves/utils/xmp.dart';
+import 'package:aves/widgets/common/aves_expansion_tile.dart';
+import 'package:aves/widgets/common/highlight_title.dart';
+import 'package:aves/widgets/fullscreen/info/common.dart';
+import 'package:aves/widgets/fullscreen/info/metadata/metadata_thumbnail.dart';
+import 'package:collection/collection.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+
+class XmpDirTile extends StatelessWidget {
+  final ImageEntry entry;
+  final SplayTreeMap<String, String> tags;
+  final ValueNotifier<String> expandedNotifier;
+
+  const XmpDirTile({
+    @required this.entry,
+    @required this.tags,
+    @required this.expandedNotifier,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final thumbnail = MetadataThumbnails(source: MetadataThumbnailSource.xmp, entry: entry);
+    final sections = SplayTreeMap.of(
+      groupBy<MapEntry<String, String>, String>(tags.entries, (kv) {
+        final fullKey = kv.key;
+        final i = fullKey.indexOf(XMP.namespaceSeparator);
+        if (i == -1) return '';
+        final namespace = fullKey.substring(0, i);
+        return XMP.namespaces[namespace] ?? namespace;
+      }),
+      compareAsciiUpperCase,
+    );
+    return AvesExpansionTile(
+      title: 'XMP',
+      expandedNotifier: expandedNotifier,
+      children: [
+        if (thumbnail != null) thumbnail,
+        Padding(
+          padding: EdgeInsets.only(left: 8, right: 8, bottom: 8),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: sections.entries.expand((sectionEntry) {
+              final title = sectionEntry.key;
+
+              final entries = sectionEntry.value.map((kv) {
+                final key = kv.key.splitMapJoin(XMP.structFieldSeparator, onNonMatch: (s) {
+                  // strip namespace
+                  final key = s.split(XMP.namespaceSeparator).last;
+                  // uppercase first letter
+                  return key.replaceFirstMapped(RegExp('.'), (m) => m.group(0).toUpperCase());
+                });
+                return MapEntry(key, kv.value);
+              }).toList()
+                ..sort((a, b) => compareAsciiUpperCaseNatural(a.key, b.key));
+              return [
+                if (title.isNotEmpty)
+                  Padding(
+                    padding: EdgeInsets.only(top: 8),
+                    child: HighlightTitle(
+                      title,
+                      color: BrandColors.get(title),
+                    ),
+                  ),
+                InfoRowGroup(Map.fromEntries(entries), maxValueLength: Constants.infoGroupMaxValueLength),
+              ];
+            }).toList(),
+          ),
+        ),
+      ],
+    );
+  }
+}