Add MIT license

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CLAUDE.md

@@ -10,7 +10,7 @@ Android camera app that applies a real-time tilt-shift (miniature/diorama) blur
 - Gesture controls: drag to position, pinch to resize, two-finger rotate
 - Slider panel for precise control of blur, falloff, size, angle, aspect ratio
 - Multi-lens support on devices with multiple back cameras
-- EXIF GPS tagging from device location
+- EXIF GPS tagging with user-toggleable opt-out (persisted across restarts)
 - Saves processed images to MediaStore (scoped storage)
 
 ## Architecture
@@ -97,6 +97,5 @@ Bitmaps emitted to `StateFlow`s are **never eagerly recycled** immediately after
 
 - `minSdk = 35` (Android 15) — intentional for personal use. Lower to 26-29 if distributing.
 - Accompanist Permissions (`0.36.0`) is deprecated; should migrate to first-party `activity-compose` API.
-- No user-facing toggle to disable GPS tagging — location is embedded whenever permission is granted.
 - Dependencies are pinned to late-2024 versions; periodic bumps recommended.
 - Fragment shader uses `int` uniform branching in GLSL ES 1.00 — works but could be cleaner with ES 3.00.

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Ole-Morten Duesund
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

app/src/main/java/no/naiv/tiltshift/ui/CameraScreen.kt

@@ -39,6 +39,8 @@ import androidx.compose.material.icons.filled.Close
 import androidx.compose.material.icons.filled.FlipCameraAndroid
 import androidx.compose.material.icons.filled.PhotoLibrary
 import androidx.compose.material.icons.filled.RestartAlt
+import androidx.compose.material.icons.filled.LocationOff
+import androidx.compose.material.icons.filled.LocationOn
 import androidx.compose.material.icons.filled.Tune
 import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.Icon
@@ -107,6 +109,7 @@ fun CameraScreen(
     val lastSavedUri by viewModel.lastSavedUri.collectAsState()
     val lastThumbnailBitmap by viewModel.lastThumbnailBitmap.collectAsState()
     val galleryPreviewBitmap by viewModel.galleryPreviewBitmap.collectAsState()
+    val geotagEnabled by viewModel.geotagEnabled.collectAsState()
     val isGalleryPreview = galleryPreviewBitmap != null
 
     val zoomRatio by viewModel.cameraManager.zoomRatio.collectAsState()
@@ -254,6 +257,20 @@ fun CameraScreen(
                 }
 
                 Row(verticalAlignment = Alignment.CenterVertically) {
+                    // GPS geotagging toggle
+                    IconButton(
+                        onClick = {
+                            viewModel.toggleGeotag()
+                            viewModel.haptics.tick()
+                        }
+                    ) {
+                        Icon(
+                            imageVector = if (geotagEnabled) Icons.Default.LocationOn else Icons.Default.LocationOff,
+                            contentDescription = if (geotagEnabled) "Disable GPS geotagging" else "Enable GPS geotagging",
+                            tint = if (geotagEnabled) Color.White else Color.White.copy(alpha = 0.5f)
+                        )
+                    }
+
                     if (!isGalleryPreview) {
                         // Camera flip button
                         IconButton(

app/src/main/java/no/naiv/tiltshift/ui/CameraViewModel.kt

@@ -1,6 +1,7 @@
 package no.naiv.tiltshift.ui
 
 import android.app.Application
+import android.content.Context
 import android.graphics.Bitmap
 import android.location.Location
 import android.net.Uri
@@ -40,12 +41,16 @@ class CameraViewModel(application: Application) : AndroidViewModel(application)
 
     companion object {
         private const val TAG = "CameraViewModel"
+        private const val PREFS_NAME = "tiltshift_prefs"
+        private const val KEY_GEOTAG_ENABLED = "geotag_enabled"
         /** Max dimension for the preview source bitmap to keep effect computation fast. */
         private const val PREVIEW_MAX_DIMENSION = 1024
         /** Debounce delay before recomputing preview to reduce GC pressure during slider drags. */
         private const val PREVIEW_DEBOUNCE_MS = 80L
     }
 
+    private val prefs = application.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+
     val cameraManager = CameraManager(application)
     val photoSaver = PhotoSaver(application)
     val captureHandler = ImageCaptureHandler(application, photoSaver)
@@ -98,6 +103,20 @@ class CameraViewModel(application: Application) : AndroidViewModel(application)
 
     val isGalleryPreview: Boolean get() = _galleryBitmap.value != null
 
+    // GPS geotagging toggle (persisted)
+    private val _geotagEnabled = MutableStateFlow(prefs.getBoolean(KEY_GEOTAG_ENABLED, true))
+    val geotagEnabled: StateFlow<Boolean> = _geotagEnabled.asStateFlow()
+
+    fun toggleGeotag() {
+        val newValue = !_geotagEnabled.value
+        _geotagEnabled.value = newValue
+        prefs.edit().putBoolean(KEY_GEOTAG_ENABLED, newValue).apply()
+    }
+
+    /** Returns current location only if geotagging is enabled. */
+    private val effectiveLocation: Location?
+        get() = if (_geotagEnabled.value) _currentLocation.value else null
+
     // Device state
     private val _currentRotation = MutableStateFlow(Surface.ROTATION_0)
     val currentRotation: StateFlow<Int> = _currentRotation.asStateFlow()
@@ -241,7 +260,7 @@ class CameraViewModel(application: Application) : AndroidViewModel(application)
             val result = captureHandler.processExistingImage(
                 imageUri = uri,
                 blurParams = _blurParams.value,
-                location = _currentLocation.value
+                location = effectiveLocation
             )
             handleSaveResult(result)
             cancelGalleryPreview()
@@ -263,7 +282,7 @@ class CameraViewModel(application: Application) : AndroidViewModel(application)
                 executor = cameraManager.getExecutor(),
                 blurParams = _blurParams.value,
                 deviceRotation = _currentRotation.value,
-                location = _currentLocation.value,
+                location = effectiveLocation,
                 isFrontCamera = cameraManager.isFrontCamera.value
             )
             handleSaveResult(result)