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mc_gallery
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added swiping 

add swiping
This commit is contained in:
Mehul Ahal 2022-12-22 12:17:08 +01:00 committed by Mguy13
parent 2ff4d44d25
commit 127a09b597
10 changed files with 154 additions and 82 deletions
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1
lib/features/core/data/constants/const_colors.dart
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@ -7,6 +7,7 @@ abstract class ConstColours {
static const white = Colors.white;
static const black = Colors.black;
static const transparent = Colors.transparent;
}
abstract class ConstThemes {

19
lib/features/core/services/connection_service.dart
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@ -4,11 +4,12 @@ import 'dart:io';
import 'package:connectivity_plus/connectivity_plus.dart';
import 'package:flutter/foundation.dart';
import 'package:internet_connection_checker/internet_connection_checker.dart';
import 'package:mc_gallery/features/core/services/logging_service.dart';
import '/locator.dart';
/// Used to observe the current connection type.
class ConnectionService {
class ConnectionService with LoggingService {
ConnectionService({
required Connectivity connectivity,
required InternetConnectionChecker internetConnectionChecker,
@ -80,7 +81,9 @@ class ConnectionService {
}
});
_isInitialized.complete();
} catch (error, stackTrace) {}
} catch (error, stackTrace) {
handle(error, stackTrace);
}
}
Future<void> dispose() async {
@ -109,7 +112,9 @@ class ConnectionService {
await listener(
connectivityResult: connectivityResult, hasInternet: await hasInternetConnection);
});
} catch (error, stackTrace) {}
} catch (error, stackTrace) {
handle(error, stackTrace);
}
}
Future<void> removeListener({required String tag}) async {
@ -118,13 +123,17 @@ class ConnectionService {
if (subscription != null) {
await subscription.cancel();
} else {}
} catch (error, stackTrace) {}
} catch (error, stackTrace) {
handle(error, stackTrace);
}
}
Future<void> _onConnectivityChanged(ConnectivityResult connectivityResult) async {
try {
_connectivityResult = connectivityResult;
} catch (error, stackTrace) {}
} catch (error, stackTrace) {
handle(error, stackTrace);
}
}
static ConnectionService get locate => Locator.locate();

35
lib/features/core/services/overlay_service.dart
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@ -1,36 +1,33 @@
import 'dart:async';
import 'package:flutter/widgets.dart';
import 'package:mc_gallery/features/core/services/logging_service.dart';
import 'package:mc_gallery/locator.dart';
class OverlayService {
const OverlayService({
OverlayService({
required LoggingService loggingService,
}) : _loggingService = loggingService;
final LoggingService _loggingService;
final Map<int, OverlayEntry> _overlayEntryMap = const {};
final Map<int, OverlayEntry> _overlayEntryMap = {};
Future<void> playOverlayEntry({
required BuildContext context,
void insertOverlayEntry(
BuildContext context, {
required String tag,
required OverlayEntry overlayEntry,
}) async {
try {
_overlayEntryMap[overlayEntry.hashCode] = overlayEntry;
Overlay.of(
context,
rootOverlay: true,
)!
.insert(overlayEntry);
}) {
_overlayEntryMap.addEntries([MapEntry(tag.hashCode, overlayEntry)]);
if (overlayEntry.mounted) overlayEntry.remove();
Overlay.of(context, rootOverlay: true)?.insert(overlayEntry);
_loggingService.info('Overlay inserted with tag: $tag');
}
_overlayEntryMap.remove(overlayEntry.hashCode);
} catch (error, stackTrace) {
_loggingService.handle(error, stackTrace);
}
void removeOverlayEntry({
required String tag,
}) {
_overlayEntryMap[tag.hashCode]?.remove();
_overlayEntryMap.remove(tag.hashCode);
_loggingService.info('Overlay removed with tag: $tag');
}
void dispose() {

2
lib/features/home/api/unsplash_images_api.dart
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@ -25,7 +25,7 @@ class UnsplashImagesApi with LoggingService implements ImagesApi {
return ImageModel(
imageIndex: imageIndex,
uri: imageUri,
imageName: '${Strings.current.image} $imageIndex: size=$imageSide',
imageName: '${Strings.current.image} ${imageIndex + 1}: size=$imageSide',
);
});
} on Exception catch (ex, stackTrace) {

3
lib/features/home/services/images_service.dart
View File

@ -36,6 +36,9 @@ class ImagesService {
int get firstAvailableImageIndex => 0;
int get lastAvailableImageIndex => _imageModels.length - 1;
int get numberOfImages => _imageModels.length;
ImageModel imageModelAt({required int index}) => _imageModels.elementAt(index);
static ImagesService get locate => Locator.locate();
}

16
lib/features/home/views/gallery/gallery_view.dart
View File

@ -16,6 +16,7 @@ class GalleryView extends StatelessWidget {
viewModelBuilder: () => GalleryViewModel.locate,
builder: (context, final model) => McgScaffold(
bodyBuilderWaiter: model.isInitialised,
forceInternetCheck: true,
appBar: AppBar(
title: Text(model.strings.gallery),
),
@ -46,15 +47,12 @@ class GalleryView extends StatelessWidget {
context,
imageModel: imageModel,
),
child: Hero(
tag: imageModel.imageIndex.toString(),
child: CachedNetworkImage(
imageUrl: imageModel.uri.toString(),
cacheKey: imageModel.imageIndex.toString(),
progressIndicatorBuilder: (_, __, final progress) =>
CircularProgressIndicator(
value: model.downloadProgressValue(progress: progress),
),
child: CachedNetworkImage(
imageUrl: imageModel.uri.toString(),
cacheKey: imageModel.imageIndex.toString(),
progressIndicatorBuilder: (_, __, final progress) =>
CircularProgressIndicator(
value: model.downloadProgressValue(progress: progress),
),
),
),

106
lib/features/home/views/image_carousel/image_carousel_view.dart
View File

@ -1,9 +1,12 @@
import 'package:auto_size_text/auto_size_text.dart';
import 'package:cached_network_image/cached_network_image.dart';
import 'package:carousel_slider/carousel_slider.dart';
import 'package:flutter/material.dart';
import 'package:flutter_markdown/flutter_markdown.dart';
import 'package:mc_gallery/features/core/data/constants/const_colors.dart';
import 'package:mc_gallery/features/core/data/constants/const_text.dart';
import 'package:mc_gallery/features/home/data/models/image_model.dart';
import '/features/core/data/constants/const_colors.dart';
import '/features/core/data/constants/const_text.dart';
import '/features/core/widgets/gap.dart';
import '/features/core/widgets/mcg_scaffold.dart';
import '/features/core/widgets/view_model_builder.dart';
@ -28,49 +31,78 @@ class ImageCarouselView extends StatelessWidget {
viewModelBuilder: () => ImageCarouselViewModel.locate,
argumentBuilder: () => imageCarouselViewArguments,
builder: (context, final model) => McgScaffold(
bodyBuilderWaiter: model.isInitialised,
appBar: AppBar(
title: Text(model.strings.imageCarousel),
),
body: Column(
children: [
Expanded(
child: Card(
elevation: 8,
child: Stack(
fit: StackFit.expand,
children: [
Hero(
tag: model.currentImageKey,
child: CachedNetworkImage(
imageUrl: model.currentImageUrl,
cacheKey: model.currentImageKey,
fit: BoxFit.fill,
progressIndicatorBuilder: (_, __, final progress) =>
CircularProgressIndicator(
value: model.downloadProgressValue(progress: progress),
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Card(
elevation: 8,
surfaceTintColor: ConstColours.transparent,
child: CarouselSlider.builder(
itemCount: model.numberOfImages,
carouselController: model.carouselController,
options: CarouselOptions(
enlargeFactor: 1,
enlargeCenterPage: true,
enlargeStrategy: CenterPageEnlargeStrategy.scale,
disableCenter: true,
viewportFraction: 1,
initialPage: model.currentImageIndex,
enableInfiniteScroll: false,
onPageChanged: (final index, _) => model.swipedTo(newIndex: index),
),
itemBuilder: (context, _, __) => Stack(
fit: StackFit.expand,
children: [
ValueListenableBuilder<ImageModel>(
valueListenable: model.currentImageModelListenable,
builder: (context, _, __) => CachedNetworkImage(
imageUrl: model.currentImageUrl,
cacheKey: model.currentImageKey,
fit: BoxFit.contain,
progressIndicatorBuilder: (_, __, final progress) =>
CircularProgressIndicator(
value: model.downloadProgressValue(progress: progress),
),
),
),
),
ValueListenableBuilder<ImageModel>(
valueListenable: model.currentImageModelListenable,
builder: (context, _, __) => Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
IconButton(
icon: Icon(
Icons.chevron_left,
color: model.hasPreviousImage
? ConstColours.white
: ConstColours.black,
),
onPressed: model.onPreviousPressed,
),
AutoSizeText(
model.currentImageName,
style: ConstText.imageOverlayTextStyle(context),
),
IconButton(
icon: Icon(
Icons.chevron_right,
color:
model.hasNextImage ? ConstColours.white : ConstColours.black,
),
onPressed: model.onNextPressed,
),
],
),
),
],
),
Center(
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Icon(
Icons.chevron_left,
color: model.hasPreviousImage ? ConstColours.white : ConstColours.black,
),
Text(
model.currentImageName,
style: ConstText.imageOverlayTextStyle(context),
),
Icon(
Icons.chevron_right,
color: model.hasNextImage ? ConstColours.white : ConstColours.black,
),
],
),
),
],
),
),
),
),

32
lib/features/home/views/image_carousel/image_carousel_view_model.dart
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@ -1,3 +1,4 @@
import 'package:carousel_slider/carousel_controller.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter_cache_manager/flutter_cache_manager.dart';
@ -22,13 +23,16 @@ class ImageCarouselViewModel extends BaseViewModel {
final NavigationService _navigationService;
final LoggingService _loggingService;
late final ValueNotifier<ImageModel> _currentImageModel;
ValueListenable<ImageModel> get currentImageModel => _currentImageModel;
late final ValueNotifier<ImageModel> _currentImageModelNotifier;
ValueListenable<ImageModel> get currentImageModelListenable => _currentImageModelNotifier;
final CarouselController carouselController = CarouselController();
@override
Future<void> initialise(bool Function() mounted, [arguments]) async {
_currentImageModel = ValueNotifier(_imagesService.imageModels
_currentImageModelNotifier = ValueNotifier(_imagesService.imageModels
.elementAt((arguments! as ImageCarouselViewArguments).imageIndexKey));
_loggingService.info('Initialized with image: ${_currentImageModelNotifier.value.imageIndex}');
super.initialise(mounted, arguments);
}
@ -38,17 +42,29 @@ class ImageCarouselViewModel extends BaseViewModel {
super.dispose();
}
String get currentImageUrl => currentImageModel.value.uri.toString();
String get currentImageKey => currentImageModel.value.imageIndex.toString();
String get currentImageName => currentImageModel.value.imageName;
void swipedTo({required int newIndex}) {
_currentImageModelNotifier.value = _imagesService.imageModelAt(index: newIndex);
_loggingService.info('Swiped to image: ${_currentImageModelNotifier.value.imageIndex}');
}
void onPreviousPressed() => carouselController.previousPage();
void onNextPressed() => carouselController.nextPage();
String get currentImageUrl => currentImageModelListenable.value.uri.toString();
String get currentImageKey => currentImageModelListenable.value.imageIndex.toString();
String get currentImageName => currentImageModelListenable.value.imageName;
int get currentImageIndex => currentImageModelListenable.value.imageIndex;
int get numberOfImages => _imagesService.numberOfImages;
double? downloadProgressValue({required DownloadProgress progress}) =>
progress.totalSize != null ? progress.downloaded / progress.totalSize! : null;
bool get hasPreviousImage =>
currentImageModel.value.imageIndex > _imagesService.firstAvailableImageIndex;
currentImageModelListenable.value.imageIndex > _imagesService.firstAvailableImageIndex;
bool get hasNextImage =>
currentImageModel.value.imageIndex < _imagesService.lastAvailableImageIndex;
currentImageModelListenable.value.imageIndex < _imagesService.lastAvailableImageIndex;
static ImageCarouselViewModel get locate => Locator.locate();
}

18
pubspec.lock
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@ -43,6 +43,13 @@ packages:
url: "https://pub.dartlang.org"
source: hosted
version: "2.9.0"
auto_size_text:
dependency: "direct main"
description:
name: auto_size_text
url: "https://pub.dartlang.org"
source: hosted
version: "3.0.0"
boolean_selector:
dependency: transitive
description:
@ -71,6 +78,13 @@ packages:
url: "https://pub.dartlang.org"
source: hosted
version: "1.0.2"
carousel_slider:
dependency: "direct main"
description:
name: carousel_slider
url: "https://pub.dartlang.org"
source: hosted
version: "4.2.1"
characters:
dependency: transitive
description:
@ -545,7 +559,7 @@ packages:
name: talker
url: "https://pub.dartlang.org"
source: hosted
version: "2.1.0+1"
version: "2.2.0"
talker_dio_logger:
dependency: "direct main"
description:
@ -559,7 +573,7 @@ packages:
name: talker_logger
url: "https://pub.dartlang.org"
source: hosted
version: "2.1.0"
version: "2.2.0"
term_glyph:
dependency: transitive
description:

4
pubspec.yaml
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@ -32,9 +32,11 @@ dependencies:
# Util frontend
flutter_markdown: ^0.6.13
auto_size_text: ^3.0.0
carousel_slider: ^4.2.1
# Logging
talker: ^2.1.0+1
talker: ^2.2.0
talker_dio_logger: ^1.0.0
# Assets