Timetable better week swipe, timetable performance upgrade

flutter_03.log

@@ -0,0 +1,59 @@
+Flutter crash report.
+Please report a bug at https://github.com/flutter/flutter/issues.
+
+## command
+
+flutter --no-color run --machine --device-id=5200de3d4dd02295 --profile --dart-define=flutter.inspector.structuredErrors=true lib/main.dart
+
+## exception
+
+String: failed to connect to http://127.0.0.1:45965/t1VeUhnSFsQ=/
+
+```
+```
+
+## flutter doctor
+
+```
+[!] Flutter (Channel stable, 3.7.4, on Linux Mint 20.3 5.15.0-60-generic, locale de_DE.UTF-8)
+    • Flutter version 3.7.4 on channel stable at /opt/flutter
+    ! The flutter binary is not on your path. Consider adding /opt/flutter/bin to your path.
+    ! The dart binary is not on your path. Consider adding /opt/flutter/bin to your path.
+    • Upstream repository https://github.com/flutter/flutter.git
+    • Framework revision b4bce91dd0 (vor 32 Stunden), 2023-02-21 09:50:50 +0800
+    • Engine revision 248290d6d5
+    • Dart version 2.19.2
+    • DevTools version 2.20.1
+    • If those were intentional, you can disregard the above warnings; however it is recommended to use "git" directly to perform update checks and upgrades.
+
+[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
+    • Android SDK at /home/elias/Android/Sdk
+    • Platform android-33, build-tools 33.0.0
+    • Java binary at: /home/elias/.local/share/JetBrains/Toolbox/apps/AndroidStudio/ch-0/213.7172.25.2113.9123335/jre/bin/java
+    • Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
+    • All Android licenses accepted.
+
+[✗] Chrome - develop for the web (Cannot find Chrome executable at google-chrome)
+    ! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.
+
+[✓] Linux toolchain - develop for Linux desktop
+    • clang version 10.0.0-4ubuntu1
+    • cmake version 3.16.3
+    • ninja version 1.10.0
+    • pkg-config version 0.29.1
+
+[✓] Android Studio (version 2021.3)
+    • Android Studio at /home/elias/.local/share/JetBrains/Toolbox/apps/AndroidStudio/ch-0/213.7172.25.2113.9123335
+    • Flutter plugin version 72.1.1
+    • Dart plugin version 213.7433
+    • Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
+
+[✓] Connected device (2 available)
+    • SM G800F (mobile) • 5200de3d4dd02295 • android-arm • Android 6.0.1 (API 23)
+    • Linux (desktop)   • linux            • linux-x64   • Linux Mint 20.3 5.15.0-60-generic
+
+[✓] HTTP Host Availability
+    • All required HTTP hosts are available
+
+! Doctor found issues in 2 categories.
+```

lib/screen/pages/timetable/timetable.dart

@@ -13,6 +13,8 @@ class Timetable extends StatefulWidget {
 }
 
 class _TimetableState extends State<Timetable> {
+  bool draggable = true;
+
   @override
   void initState() {
     super.initState();
@@ -36,14 +38,19 @@ class _TimetableState extends State<Timetable> {
             Expanded(
               child: GestureDetector(
                 child: WeekView(value),
-                //onDoubleTap: () => timetable.nearest(),
-                onHorizontalDragEnd: (details) {
-                  if(details.primaryVelocity! < 0) {
-                    timetable.switchWeek();
-                  } else {
+                onHorizontalDragUpdate: (details) {
+                  if(!draggable) return;
+                  if(details.delta.dx > 5) {
+                    draggable = false;
                     timetable.switchWeek(previous: true);
+                  } else if(details.delta.dx < 5) {
+                    draggable = false;
+                    timetable.switchWeek();
                   }
                 },
+                onHorizontalDragEnd: (details) {
+                  draggable = true;
+                },
               ),
             ),