From 182f0b29b0aaaef51f578d76eb15fbcdfbee5b57 Mon Sep 17 00:00:00 2001
From: 2ndbeam <2ndbeam@disroot.org>
Date: Tue, 30 Sep 2025 12:34:04 +0300
Subject: [PATCH] automated scale range setting

---
 app/src/main/java/com/mirenkov/ktheightmap/MainActivity.kt   | 4 +++-
 app/src/main/java/com/mirenkov/ktheightmap/TileDao.kt        | 3 +++
 app/src/main/java/com/mirenkov/ktheightmap/TileRepository.kt | 4 ++++
 app/src/main/java/com/mirenkov/ktheightmap/TileViewModel.kt  | 5 ++++-
 4 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/com/mirenkov/ktheightmap/MainActivity.kt b/app/src/main/java/com/mirenkov/ktheightmap/MainActivity.kt
index ce22994..3db792a 100644
--- a/app/src/main/java/com/mirenkov/ktheightmap/MainActivity.kt
+++ b/app/src/main/java/com/mirenkov/ktheightmap/MainActivity.kt
@@ -3,6 +3,7 @@ package com.mirenkov.ktheightmap
 import android.app.Application
 import android.content.Intent
 import android.os.Bundle
+import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
@@ -84,6 +85,7 @@ class MainActivity : ComponentActivity() {
 @Composable
 fun Main(vm: TileViewModel = viewModel()) {
     var scale by rememberSaveable { vm.scale }
+    val maxScale by rememberSaveable { vm.maxLevel }
     val coroutineScope = rememberCoroutineScope()
     val tileContainer = TileContainer(vm, coroutineScope)
     KtHeightMapTheme {
@@ -111,7 +113,7 @@ fun Main(vm: TileViewModel = viewModel()) {
                 Slider(
                     value = scale,
                     onValueChange = { scale = it },
-                    valueRange = 1F..14F,
+                    valueRange = 2F..maxScale.toFloat(),
                     modifier = Modifier.align(Alignment.CenterStart)
                 )
             }
diff --git a/app/src/main/java/com/mirenkov/ktheightmap/TileDao.kt b/app/src/main/java/com/mirenkov/ktheightmap/TileDao.kt
index 60f38f2..cd7abfb 100644
--- a/app/src/main/java/com/mirenkov/ktheightmap/TileDao.kt
+++ b/app/src/main/java/com/mirenkov/ktheightmap/TileDao.kt
@@ -14,4 +14,7 @@ interface TileDao {
 
     @Query("delete from tiles")
     fun clearTiles()
+
+    @Query("select max(level) from tiles")
+    fun maxLevel(): Int?
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/mirenkov/ktheightmap/TileRepository.kt b/app/src/main/java/com/mirenkov/ktheightmap/TileRepository.kt
index 5b07937..a5eaf79 100644
--- a/app/src/main/java/com/mirenkov/ktheightmap/TileRepository.kt
+++ b/app/src/main/java/com/mirenkov/ktheightmap/TileRepository.kt
@@ -21,4 +21,8 @@ class TileRepository(private val tileDao: TileDao) {
     fun clearTiles() {
         coroutineScope.launch(Dispatchers.IO) { tileDao.clearTiles() }
     }
+
+    fun getMaxLevel(): Int {
+        return coroutineScope.future(Dispatchers.IO){ tileDao.maxLevel() }.join() ?: 1
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/mirenkov/ktheightmap/TileViewModel.kt b/app/src/main/java/com/mirenkov/ktheightmap/TileViewModel.kt
index e915479..971e59b 100644
--- a/app/src/main/java/com/mirenkov/ktheightmap/TileViewModel.kt
+++ b/app/src/main/java/com/mirenkov/ktheightmap/TileViewModel.kt
@@ -2,6 +2,7 @@ package com.mirenkov.ktheightmap
 
 import android.app.Application
 import androidx.compose.runtime.mutableFloatStateOf
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.lifecycle.ViewModel
@@ -17,7 +18,8 @@ class TileViewModel(application: Application): ViewModel() {
 
     val mapOffsetX = mutableFloatStateOf(-646.65625F)
     val mapOffsetY = mutableFloatStateOf(-1157.2814F)
-    val scale = mutableFloatStateOf(1F)
+    val scale = mutableFloatStateOf(2F)
+    var maxLevel = mutableIntStateOf(1)
 
     var halvedOffsetX: Float? = null
     var halvedOffsetY: Float? = null
@@ -29,5 +31,6 @@ class TileViewModel(application: Application): ViewModel() {
         val tileDb = TileDB.getInstance(application)
         val tileDao = tileDb.tileDao()
         repository = TileRepository(tileDao)
+        maxLevel.intValue = repository.getMaxLevel()
     }
 }
\ No newline at end of file