added quick naviagation for days at the top of the timetable

mobile/.idea/caches/deviceStreaming.xml

@@ -146,6 +146,17 @@
           <option name="screenX" value="1080" />
           <option name="screenY" value="2340" />
         </PersistentDeviceSelectionData>
+        <PersistentDeviceSelectionData>
+          <option name="api" value="34" />
+          <option name="brand" value="samsung" />
+          <option name="codename" value="e3q" />
+          <option name="id" value="e3q" />
+          <option name="manufacturer" value="Samsung" />
+          <option name="name" value="Galaxy S24 Ultra" />
+          <option name="screenDensity" value="450" />
+          <option name="screenX" value="1440" />
+          <option name="screenY" value="3120" />
+        </PersistentDeviceSelectionData>
         <PersistentDeviceSelectionData>
           <option name="api" value="33" />
           <option name="brand" value="google" />

mobile/app/src/main/java/com/odweta/solon/Timetable.kt

@@ -19,6 +19,7 @@ import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.pager.HorizontalPager
+import androidx.compose.foundation.pager.PagerState
 import androidx.compose.foundation.pager.rememberPagerState
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.shape.RoundedCornerShape
@@ -65,8 +66,11 @@ import com.odweta.solon.ui.theme.PastelRed
 import com.odweta.solon.ui.theme.PastelRedTransparent
 import com.odweta.solon.ui.theme.PastelYellow
 import com.odweta.solon.ui.theme.PastelYellowTransparent
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import java.time.LocalDate
 import java.time.LocalDateTime
 import java.time.LocalTime
@@ -74,16 +78,65 @@ import java.time.format.DateTimeFormatter
 
 var showDetailDialog by mutableStateOf(false)
 
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun TimetableScreen() {
+    val pagerState = rememberPagerState(pageCount = { if (global.timetable.isNotEmpty()) global.timetable.size else 6 }) // FIXME
+    Column {
+        QuickDays(pagerState)
         Box(
             modifier = Modifier.fillMaxSize(),
             contentAlignment = Alignment.BottomCenter
         ) {
-        DayPager()
+            DayPager(pagerState)
             if (showDetailDialog) DetailDialog()
         }
     }
+}
+
+@OptIn(ExperimentalFoundationApi::class)
+@Composable
+fun QuickDays(pagerState: PagerState) {
+    @Composable
+    fun QuickDay(day: Day, modifier: Modifier, idx: Int) {
+        val scope = rememberCoroutineScope()
+        Column(
+            horizontalAlignment = Alignment.CenterHorizontally,
+            verticalArrangement = Arrangement.Center,
+            modifier = modifier.padding(5.dp).background(
+                shape = RoundedCornerShape(global.dimens.roundedCorner),
+                color = PastelYellowTransparent
+            ).clickable(onClick = {
+                scope.launch {
+                    withContext(Dispatchers.Main) {
+                        pagerState.animateScrollToPage(idx)
+                    }
+                }
+            })
+        ) {
+            Text(
+                text = "${day.name[0]}${day.name[1]}",
+                color = Color.White,
+                textAlign = TextAlign.Center,
+                fontWeight = FontWeight.Bold
+            )
+            Spacer(Modifier.height(5.dp))
+            Text(
+                text = day.date,
+                color = Color.White,
+                textAlign = TextAlign.Center
+            )
+        }
+    }
+
+    Row(
+        Modifier.fillMaxWidth().padding(bottom = 15.dp).padding(horizontal = 5.dp)
+    ) {
+        for ((idx, day) in global.timetable.withIndex()) {
+            QuickDay(day, Modifier.weight(1f), idx)
+        }
+    }
+}
 
 @SuppressLint("UnrememberedMutableState")
 @OptIn(ExperimentalMaterial3Api::class)
@@ -227,8 +280,7 @@ fun DetailDialog() {
 
 @OptIn(ExperimentalFoundationApi::class)
 @Composable
-fun DayPager() {
+fun DayPager(pagerState: PagerState) {
-    val pagerState = rememberPagerState(pageCount = { if (global.timetable.isNotEmpty()) global.timetable.size else 6 }) // FIXME
     HorizontalPager(
         state = pagerState,
         modifier = Modifier.fillMaxSize()
@@ -274,6 +326,7 @@ private fun getSubjectColor(s: Subject, transparent: Boolean): Color {
         }
     }
 }
+
 fun isTimeBetweenT(givenTime: LocalTime, startTime: LocalTime, endTime: LocalTime): Boolean {
     // Check if the given time is between startTime and endTime
     return givenTime.isAfter(startTime) && givenTime.isBefore(endTime)