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Fix back button when going back after swiping

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This commit is contained in:
Marco 2024-10-18 02:44:43 +02:00
parent 3faf5295b1
commit cdabd1ee94
6 changed files with 119 additions and 169 deletions
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9
lib/main.dart
View File

@ -1,5 +1,4 @@
import 'package:calorimeter/food_entry/food_entry_bloc.dart';
import 'package:calorimeter/perdate/perdate_pageview.dart';
import 'package:calorimeter/perdate/perdate_pageview_controller.dart';
import 'package:calorimeter/storage/storage.dart';
import 'package:calorimeter/utils/date_time_helper.dart';
@ -20,14 +19,8 @@ void main() async {
var storage = await FoodStorage.create();
await storage.buildFoodLookupDatabase();
timeNow = DateTime.now().copyWith(
hour: 0,
isUtc: true,
minute: 0,
second: 0,
millisecond: 0,
microsecond: 0);
timeNow = DateTimeHelper.now();
entriesForToday = await storage.getEntriesForDate(timeNow);
var kcalLimit = await storage.readLimit();

4
lib/perdate/perdate_pageview.dart
View File

@ -30,6 +30,10 @@ class PerDatePageView extends StatelessWidget {
var diff = value - pageController.initialPage;
var newDate = initialDate.subtract(Duration(days: diff));
log("newDate = $newDate");
context
.read<PageViewStateProvider>()
.addVisitedindexIfNotVisitedByBackButton(value);
context.read<PageViewStateProvider>().setDisplayedDate(newDate);
},
itemBuilder: (context, index) {

87
lib/perdate/perdate_pageview_controller.dart
View File

@ -33,27 +33,27 @@ class PerDatePageViewController extends StatelessWidget {
@override
Widget build(BuildContext context) {
return BackButtonListener(
onBackButtonPressed: () async {
var visitedIndexes =
context.read<PageViewStateProvider>().visitedIndexes;
if (visitedIndexes.length == 1) {
return false;
}
return ChangeNotifierProvider(
create: (context) => PageViewStateProvider(
initialDate: initialDate,
initialOffset: initialOffset,
),
child: Builder(builder: (context) {
return BackButtonListener(
onBackButtonPressed: () async {
context.read<PageViewStateProvider>().backButtonWasPressed = true;
var visitedIndexes =
context.read<PageViewStateProvider>().visitedIndexes;
if (visitedIndexes.length == 1) {
return false;
}
visitedIndexes.removeLast();
visitedIndexes.removeLast();
pageController.jumpToPage(visitedIndexes.last);
pageController.jumpToPage(visitedIndexes.last);
return true;
},
child: ChangeNotifierProvider(
create: (context) => PageViewStateProvider(
initialDate: initialDate,
initialOffset: initialOffset,
),
child: Builder(builder: (context) {
return Scaffold(
return true;
},
child: Scaffold(
appBar: AppBar(
title: Builder(builder: (context) {
return Text(DateFormat.yMMMMd('de').format(
@ -62,17 +62,26 @@ class PerDatePageViewController extends StatelessWidget {
actions: const [ThemeSwitcherButton()],
),
bottomNavigationBar: BottomAppBar(
shape: const RectangularNotchShape(),
color: Theme.of(context).colorScheme.secondary,
child: SumWidget(foodEntries: [])),
shape: const RectangularNotchShape(),
color: Theme.of(context).colorScheme.secondary,
child: Builder(builder: (context) {
return SumWidget(
date: context.watch<PageViewStateProvider>().displayedDate);
}),
),
drawer: const AppDrawer(),
floatingActionButton: OverflowBar(children: [
ScanFoodFAB(
onPressed: () {
var result = BarcodeScanner.scan();
context
.read<FoodEntryBloc>()
.add(BarcodeScanned(scanResultFuture: result));
context.read<FoodEntryBloc>().add(
BarcodeScanned(
scanResultFuture: result,
forDate: context
.read<PageViewStateProvider>()
.displayedDate,
),
);
},
),
const SizedBox(width: 8),
@ -94,21 +103,22 @@ class PerDatePageViewController extends StatelessWidget {
pageController: pageController,
initialDate: initialDate,
),
);
}),
),
),
);
}),
);
}
}
class PageViewStateProvider with ChangeNotifier {
DateTime _displayedDate;
List<int> visitedIndexes = [];
final List<int> _visitedIndexes;
bool _backButtonWasPressed = false;
PageViewStateProvider({required DateTime initialDate, int initialOffset = 0})
: _displayedDate = initialDate {
visitedIndexes.add(initialOffset);
: _displayedDate = initialDate,
_visitedIndexes = [] {
_visitedIndexes.add(initialOffset);
}
set backButtonWasPressed(val) => _backButtonWasPressed = val;
@ -120,7 +130,18 @@ class PageViewStateProvider with ChangeNotifier {
notifyListeners();
}
void addVisitedindex(int index) {
visitedIndexes.add(index);
get visitedIndexes => _visitedIndexes;
void addVisitedIndex(int index) {
_visitedIndexes.add(index);
}
void addVisitedindexIfNotVisitedByBackButton(int index) {
if (_backButtonWasPressed) {
_backButtonWasPressed = false;
return;
}
addVisitedIndex(index);
}
}

54
lib/perdate/perdate_widget.dart
View File

@ -1,9 +1,7 @@
import 'package:calorimeter/food_entry/food_entry_bloc.dart';
import 'package:calorimeter/perdate/entry_list.dart';
import 'package:calorimeter/storage/storage.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:provider/provider.dart';
class PerDateWidget extends StatefulWidget {
final DateTime date;
@ -15,52 +13,30 @@ class PerDateWidget extends StatefulWidget {
class _PerDateWidgetState extends State<PerDateWidget>
with AutomaticKeepAliveClientMixin<PerDateWidget> {
late FoodStorage storage;
late Future<List<FoodEntryState>> entriesFuture;
List<FoodEntryState> entries = [];
@override
void initState() {
storage = FoodStorage.getInstance();
entriesFuture = storage.getEntriesForDate(widget.date);
entriesFuture.then((val) {
entries = val;
});
context
.read<FoodEntryBloc>()
.add(PageBeingInitialized(forDate: widget.date));
super.initState();
}
@override
void dispose() {
super.dispose();
}
@override
Widget build(BuildContext context) {
super.build(context);
return FutureBuilder(
future: entriesFuture,
builder: (context, snapshot) {
return snapshot.connectionState != ConnectionState.done
? const Center(child: CircularProgressIndicator())
: BlocProvider(
create: (context) => FoodEntryBloc(
initialState: PageState(foodEntries: entries),
storage: storage,
forDate: widget.date,
),
child: BlocConsumer<FoodEntryBloc, PageState>(
listener: (context, pageState) {
if (pageState.errorString != null) {
showNewSnackbarWith(context, pageState.errorString!);
}
},
builder: (context, pageState) {
return FoodEntryList(entries: pageState.foodEntries);
},
),
);
});
return BlocConsumer<FoodEntryBloc, GlobalEntryState>(
listener: (context, pageState) {
if (pageState.errorString != null) {
showNewSnackbarWith(context, pageState.errorString!);
}
},
builder: (context, pageState) {
return FoodEntryList(
entries: pageState.foodEntries[widget.date] ?? [],
date: widget.date);
},
);
}
void showNewSnackbarWith(BuildContext context, String text) {

48
lib/utils/scan_food_notifier.dart
View File

@ -1,48 +0,0 @@
import 'package:barcode_scan2/barcode_scan2.dart';
import 'package:calorimeter/food_entry/food_entry_bloc.dart';
import 'package:calorimeter/food_scan/food_fact_lookup.dart';
import 'package:flutter/material.dart';
class ScanFoodNotifier with ChangeNotifier {
void handleBarcodeScannedEvent(BarcodeScanned barcode) async {
var client = FoodFactLookupClient();
var scanResult = await barcode.scanResultFuture;
if (scanResult.type == ResultType.Cancelled) {
return;
}
if (scanResult.type == ResultType.Error) {
return;
}
var responseFuture = client.retrieveFoodInfo(scanResult.rawContent);
var newEntryWaiting = FoodEntryState(
kcalPer100: 0,
name: "",
mass: 0,
waitingForNetwork: true,
isSelected: false,
);
await responseFuture.then((response) async {
if (response.status ==
FoodFactResponseStatus.foodFactServerNotReachable) {
return;
}
var newEntryFinishedWaiting = FoodEntryState(
name: response.food?.name ?? "",
mass: response.food?.mass ?? 0,
kcalPer100: response.food?.kcalPer100g ?? 0,
waitingForNetwork: false,
isSelected: false,
);
});
}
}
class BarcodeScanned {
final Future<ScanResult> scanResultFuture;
BarcodeScanned({required this.scanResultFuture});
}

86
lib/utils/sum_widget.dart
View File

@ -4,53 +4,57 @@ import 'package:calorimeter/food_entry/food_entry_bloc.dart';
import 'package:calorimeter/utils/settings_bloc.dart';
class SumWidget extends StatelessWidget {
final List<FoodEntryState> foodEntries;
const SumWidget({required this.foodEntries, super.key});
final DateTime date;
const SumWidget({super.key, required this.date});
@override
Widget build(BuildContext context) {
return BlocBuilder<SettingsDataBloc, SettingsState>(
builder: (context, state) {
var sum = 0.0;
for (var entry in foodEntries) {
sum += entry.kcalPer100 / 100 * entry.mass;
}
var diff = state.kcalLimit - sum;
var diffLimit = state.kcalLimit ~/ 4;
return BlocBuilder<FoodEntryBloc, GlobalEntryState>(
builder: (context, entryState) {
return BlocBuilder<SettingsDataBloc, SettingsState>(
builder: (context, settingsState) {
var sum = 0.0;
for (var entry in entryState.foodEntries[date] ?? []) {
sum += entry.kcalPer100 / 100 * entry.mass;
}
var diff = settingsState.kcalLimit - sum;
var diffLimit = settingsState.kcalLimit ~/ 4;
var textColor = Theme.of(context).colorScheme.onSecondary;
var newTextColor = textColor;
var brightness = Theme.of(context).brightness;
var textColor = Theme.of(context).colorScheme.onSecondary;
var newTextColor = textColor;
var brightness = Theme.of(context).brightness;
switch (brightness) {
case Brightness.dark:
if (diff < 0) {
newTextColor = Colors.red[900]!;
} else if (diff < diffLimit) {
newTextColor = Colors.orange[900]!;
}
break;
switch (brightness) {
case Brightness.dark:
if (diff < 0) {
newTextColor = Colors.red[900]!;
} else if (diff < diffLimit) {
newTextColor = Colors.orange[900]!;
}
break;
case Brightness.light:
if (diff < 0) {
newTextColor = Colors.redAccent;
} else if (diff < diffLimit) {
newTextColor = Colors.orangeAccent;
}
break;
}
case Brightness.light:
if (diff < 0) {
newTextColor = Colors.redAccent;
} else if (diff < diffLimit) {
newTextColor = Colors.orangeAccent;
}
break;
}
return Align(
alignment: Alignment.centerLeft,
child: Text(
'kcal heute: ${sum.ceil().toString()}/${state.kcalLimit.ceil()}',
style: Theme.of(context)
.textTheme
.bodyLarge!
.copyWith(color: newTextColor),
),
);
},
);
return Align(
alignment: Alignment.centerLeft,
child: Text(
'kcal heute: ${sum.ceil().toString()}/${settingsState.kcalLimit.ceil()}',
style: Theme.of(context)
.textTheme
.bodyLarge!
.copyWith(color: newTextColor),
),
);
},
);
});
}
}