olemd/tilt-shift-camera
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Add GPS geotagging toggle to camera top bar

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Users can now opt out of embedding GPS coordinates in photos.
The toggle is persisted via SharedPreferences and defaults to enabled.
When disabled, effectiveLocation returns null so no EXIF GPS tags are written.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Ole-Morten Duesund 2026-03-05 13:50:33 +01:00
commit e9bef0607f
3 changed files with 39 additions and 4 deletions
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17
app/src/main/java/no/naiv/tiltshift/ui/CameraScreen.kt
View file

@ -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(

23
app/src/main/java/no/naiv/tiltshift/ui/CameraViewModel.kt
View file

@ -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)