KhmParser start

app/src/main/java/com/mirenkov/ktheightmap/KhmParser.kt

@@ -0,0 +1,27 @@
+package com.mirenkov.ktheightmap
+
+import android.util.Log
+import java.io.DataInputStream
+import java.io.FileInputStream
+
+class KhmParser {
+    companion object {
+        fun parse(filePath: String) {
+            Log.i(TAG, "start")
+            val dis = DataInputStream(FileInputStream(filePath))
+            with(dis) {
+                Log.i(TAG, "start2")
+                val minLon = readFloat()
+                val minLat = readFloat()
+                val lonPerPixel = readFloat()
+                val latPerPixel = readFloat()
+                val rasterWidth = readInt()
+                val rasterHeight = readInt()
+                Log.i(TAG, "mLon: %.6f, mLat: %.6f, pLon: %.6f, pLat: %.6f, w: %d, h: %d".format(
+                    minLon, minLat, lonPerPixel, latPerPixel, rasterWidth, rasterHeight
+                ))
+            }
+            Log.i(TAG, "end")
+        }
+    }
+}

app/src/main/java/com/mirenkov/ktheightmap/MapCanvas.kt

@@ -2,13 +2,10 @@ package com.mirenkov.ktheightmap
 
 import android.util.Log
 import androidx.compose.foundation.Canvas
-import androidx.compose.foundation.clickable
 import androidx.compose.foundation.gestures.detectDragGestures
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.MutableFloatState
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableFloatStateOf
 import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier

app/src/main/java/com/mirenkov/ktheightmap/SettingsActivity.kt

@@ -13,6 +13,10 @@ import androidx.compose.foundation.layout.safeDrawingPadding
 import androidx.compose.material3.Button
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.MutableState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
@@ -31,7 +35,7 @@ import java.util.zip.ZipInputStream
 class SettingsActivity : ComponentActivity() {
 
     companion object {
-        var filePath: String? = null
+        var filePath: MutableState<String?> = mutableStateOf(null)
     }
 
     fun filePickerResult(result: FilePickerResult): String? {
@@ -41,7 +45,7 @@ class SettingsActivity : ComponentActivity() {
         } else {
             val filePath = result.selectedFilePath
             filePath?.let {
-                if (it.endsWith(".zip"))
+                if (it.endsWith(".zip") || it.endsWith(".khm"))
                     return filePath
             }
             return null
@@ -50,7 +54,7 @@ class SettingsActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         val launcher = registerForActivityResult(FilePickerResultContracts.PickDocumentFile())
-            { result -> filePath = filePickerResult(result) }
+            { result -> filePath.value = filePickerResult(result) }
 
         enableEdgeToEdge()
         setContent {
@@ -70,14 +74,16 @@ class SettingsActivity : ComponentActivity() {
 @Composable
 fun SettingsMain(vm: TileViewModel, launcher: ActivityResultLauncher<DocumentFilePickerConfig?>) {
     val coroutineScope = rememberCoroutineScope()
+    val filePath by remember { SettingsActivity.filePath }
     KtHeightMapTheme {
         Column(Modifier.fillMaxSize()
             .safeDrawingPadding()) {
-            Button(onClick = {
+            Button(
-                launcher.launch(null)
+                onClick = { launcher.launch(null) }
-            }) { Text(text = "Select database") }
+            ) { Text(text = "Select database") }
-            Button(onClick = { coroutineScope.launch {
+            Button(
-                processZip(SettingsActivity.filePath).forEach {
+                onClick = { coroutineScope.launch {
+                    processZip(filePath).forEach {
                         with(vm.repository) {
                             val t = getTile(it.x, it.y, it.level)
                             if (t == null) {
@@ -88,13 +94,14 @@ fun SettingsMain(vm: TileViewModel, launcher: ActivityResultLauncher<DocumentFil
                                 Log.i(TAG, "found in db: %d, %d, %d".format(t.level, t.x, t.y))
                         }
                     }
-                }
+                } },
-            }) { Text(text = "Load database") }
+            ) { Text(text = "Load .zip") }
-            Button(onClick = {
+            Button(
-                coroutineScope.launch {
+                onClick = { coroutineScope.launch { vm.repository.clearTiles() } },
-                    vm.repository.clearTiles()
+            ) { Text(text = "Clear database") }
-                }
+            Button(
-            }) { Text(text = "Clear database") }
+                onClick = { filePath?.let { KhmParser.parse(it) } },
+            ) { Text(text = "Load .khm") }
         }
     }
 }