began implementing calendar

DBTApp/.idea/codeStyles/Project.xml

@@ -1,5 +1,40 @@
 <component name="ProjectCodeStyleConfiguration">
   <code_scheme name="Project" version="173">
+    <JavaCodeStyleSettings>
+      <option name="IMPORT_LAYOUT_TABLE">
+        <value>
+          <package name="" withSubpackages="true" static="false" module="true" />
+          <package name="android" withSubpackages="true" static="true" />
+          <package name="androidx" withSubpackages="true" static="true" />
+          <package name="com" withSubpackages="true" static="true" />
+          <package name="junit" withSubpackages="true" static="true" />
+          <package name="net" withSubpackages="true" static="true" />
+          <package name="org" withSubpackages="true" static="true" />
+          <package name="java" withSubpackages="true" static="true" />
+          <package name="javax" withSubpackages="true" static="true" />
+          <package name="" withSubpackages="true" static="true" />
+          <emptyLine />
+          <package name="android" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="androidx" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="com" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="junit" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="net" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="org" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="java" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="javax" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="" withSubpackages="true" static="false" />
+          <emptyLine />
+        </value>
+      </option>
+    </JavaCodeStyleSettings>
     <JetCodeStyleSettings>
       <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
     </JetCodeStyleSettings>

DBTApp/app/src/main/java/de/cdaut/dbtapp/MainActivity.kt

@@ -22,6 +22,7 @@ import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
 import de.cdaut.dbtapp.components.BottomNavigationBar
 import de.cdaut.dbtapp.components.SkillsScreen
+import de.cdaut.dbtapp.components.TrackingScreen
 import de.cdaut.dbtapp.navigation.Screens
 
 class MainActivity : ComponentActivity() {
@@ -49,7 +50,7 @@ private fun MainContent() {
                 modifier = Modifier.padding(paddingValues = paddingValues)
             ) {
                 composable(Screens.Tracking.route) {
-                    Text("Tracking")
+                    TrackingScreen()
                 }
                 composable(Screens.Skillslist.route) {
                     SkillsScreen()
@@ -70,7 +71,6 @@ private fun MainContent() {
     }
 }
 
-@Preview
 @Composable
 private fun EmergencyButton() {
     FloatingActionButton(

DBTApp/app/src/main/java/de/cdaut/dbtapp/components/Tracking.kt

@@ -0,0 +1,79 @@
+package de.cdaut.dbtapp.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ChevronLeft
+import androidx.compose.material.icons.filled.ChevronRight
+import androidx.compose.material3.DatePicker
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.Text
+import androidx.compose.material3.rememberDatePickerState
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.tooling.preview.Preview
+import de.cdaut.dbtapp.util.WeekdayListByLocale
+
+@Composable
+fun TrackingScreen() {
+    TopCalendar()
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Preview
+@Composable
+private fun DatePickerPreview() {
+    val datePickerState = rememberDatePickerState()
+    DatePicker(datePickerState)
+}
+
+@Preview
+@Composable
+private fun TopCalendarPrev() {
+    Box(Modifier.background(Color.White)) {
+        TopCalendar()
+    }
+}
+
+@Composable
+private fun TopCalendar() {
+    Column {
+        //Top Navigation and display items
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.SpaceBetween
+        ) {
+            Text(text = "currentDate")
+            Row {
+                Icon(
+                    modifier = Modifier.clickable(onClick = {}),
+                    imageVector = Icons.Filled.ChevronLeft,
+                    contentDescription = "TODO: Provide"
+                )
+
+                Icon(
+                    modifier = Modifier.clickable(onClick = {}),
+                    imageVector = Icons.Filled.ChevronRight,
+                    contentDescription = "TODO: Provide"
+                )
+            }
+        }
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.SpaceBetween
+        ) {
+            for (label in WeekdayListByLocale()) {
+                Text(text = label)
+            }
+        }
+    }
+}

DBTApp/app/src/main/java/de/cdaut/dbtapp/util/DateHelpers.kt

@@ -0,0 +1,16 @@
+package de.cdaut.dbtapp.util
+
+import java.time.DayOfWeek
+import java.time.format.TextStyle
+import java.time.temporal.WeekFields
+import java.util.Locale
+
+fun WeekdayListByLocale(): List<String> {
+    val locale = Locale.getDefault()
+    val listOfDayNames = DayOfWeek.entries.map { it.getDisplayName(TextStyle.NARROW, locale).substring(0, 1) }
+    val firstDayOfWeek = WeekFields.of(locale).firstDayOfWeek.ordinal
+    val orderedListOfDayNames =
+        listOfDayNames.subList(firstDayOfWeek, 7) + listOfDayNames.subList(0, firstDayOfWeek)
+
+    return orderedListOfDayNames
+}