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‎app/src/main/kotlin/com/google/ai/sample/feature/multimodal/PhotoReasoningScreen.kt‎

Lines changed: 168 additions & 134 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,6 @@
11
package com.google.ai.sample.feature.multimodal
22

3+
import android.app.Activity // Import Activity if not already present
34
import android.graphics.drawable.BitmapDrawable
45
import android.net.Uri
56
import androidx.activity.compose.rememberLauncherForActivityResult
@@ -55,99 +56,158 @@ import com.google.ai.sample.ScreenshotManager
5556
import com.google.ai.sample.util.UriSaver
5657
import kotlinx.coroutines.launch
5758
import android.content.Context
59+
import android.content.Intent // Import Intent
5860
import android.graphics.Bitmap
5961
import android.widget.Toast
62+
import androidx.compose.runtime.DisposableEffect
63+
import androidx.compose.ui.platform.LocalLifecycleOwner
6064
import androidx.core.net.toUri
65+
import androidx.lifecycle.Lifecycle
66+
import androidx.lifecycle.LifecycleEventObserver
6167
import java.io.File
6268

69+
6370
@Composable
6471
internal fun PhotoReasoningRoute(
6572
viewModel: PhotoReasoningViewModel = viewModel(factory = GenerativeViewModelFactory)
6673
) {
6774
val photoReasoningUiState by viewModel.uiState.collectAsState()
68-
69-
val coroutineScope = rememberCoroutineScope()
70-
val imageRequestBuilder = ImageRequest.Builder(LocalContext.current)
71-
val imageLoader = ImageLoader.Builder(LocalContext.current).build()
7275
val context = LocalContext.current
76+
val lifecycleOwner = LocalLifecycleOwner.current
77+
78+
// Use ScreenshotManager instance
79+
val screenshotManager = rememberSaveable(saver = ScreenshotManagerSaver(context)) {
80+
ScreenshotManager.getInstance(context)
81+
}
82+
83+
84+
// Activity Result Launcher for Media Projection Permission
85+
val mediaProjectionLauncher = rememberLauncherForActivityResult(
86+
contract = ActivityResultContracts.StartActivityForResult()
87+
) { result ->
88+
Log.d("PhotoReasoningRoute", "MediaProjectionLauncher result: ${result.resultCode}")
89+
screenshotManager.handlePermissionResult(result.resultCode, result.data)
90+
// Optional: Trigger screenshot immediately after permission if needed
91+
// if (screenshotManager.handlePermissionResult(result.resultCode, result.data)) {
92+
// // Trigger screenshot or enable button etc.
93+
// }
94+
}
95+
96+
// Clean up ScreenshotManager when the composable leaves the screen
97+
DisposableEffect(lifecycleOwner) {
98+
val observer = LifecycleEventObserver { _, event ->
99+
if (event == Lifecycle.Event.ON_DESTROY) {
100+
Log.d("PhotoReasoningRoute", "Lifecycle ON_DESTROY, releasing ScreenshotManager")
101+
screenshotManager.release()
102+
}
103+
}
104+
lifecycleOwner.lifecycle.addObserver(observer)
105+
onDispose {
106+
Log.d("PhotoReasoningRoute", "Composable onDispose")
107+
lifecycleOwner.lifecycle.removeObserver(observer)
108+
// Consider if release() should happen here or strictly on ON_DESTROY
109+
// screenshotManager.release() // Might be too early if composable recomposes
110+
}
111+
}
112+
73113

74114
PhotoReasoningScreen(
75115
uiState = photoReasoningUiState,
76-
onReasonClicked = { inputText, selectedItems ->
77-
coroutineScope.launch {
78-
// Take screenshot when Go button is pressed
79-
val screenshotManager = ScreenshotManager.getInstance(context)
80-
81-
// Use a callback approach with non-blocking behavior
82-
screenshotManager.takeScreenshot { bitmap ->
83-
if (bitmap != null) {
84-
// Save screenshot to file
85-
val screenshotFile = screenshotManager.saveBitmapToFile(bitmap)
86-
if (screenshotFile != null) {
87-
// Add screenshot URI to selected items
88-
val updatedItems = selectedItems.toMutableList()
89-
updatedItems.add(screenshotFile.toUri())
90-
91-
// Process all images including screenshot within the coroutine scope
92-
coroutineScope.launch {
93-
processImagesAndReason(updatedItems, inputText, imageRequestBuilder, imageLoader, viewModel)
94-
}
95-
} else {
96-
// If screenshot saving failed, proceed with original images
97-
coroutineScope.launch {
98-
processImagesAndReason(selectedItems, inputText, imageRequestBuilder, imageLoader, viewModel)
99-
}
100-
Toast.makeText(context, "Failed to save screenshot", Toast.LENGTH_SHORT).show()
101-
}
102-
} else {
103-
// If screenshot failed, proceed with original images
104-
coroutineScope.launch {
105-
processImagesAndReason(selectedItems, inputText, imageRequestBuilder, imageLoader, viewModel)
106-
}
107-
Toast.makeText(context, "Failed to take screenshot", Toast.LENGTH_SHORT).show()
108-
}
109-
}
116+
onRequestScreenshotPermission = {
117+
try {
118+
val mediaProjectionManager = context.getSystemService(Context.MEDIA_PROJECTION_SERVICE) as MediaProjectionManager
119+
mediaProjectionLauncher.launch(mediaProjectionManager.createScreenCaptureIntent())
120+
} catch (e: Exception) {
121+
Log.e("PhotoReasoningRoute", "Error requesting screenshot permission: ${e.message}", e)
122+
Toast.makeText(context, "Could not request screen capture.", Toast.LENGTH_SHORT).show()
110123
}
124+
},
125+
onReasonClicked = { inputText, selectedItems ->
126+
Log.d("PhotoReasoningRoute", "Go button clicked. Taking screenshot.")
127+
// Take screenshot using the manager
128+
screenshotManager.takeScreenshot { bitmap ->
129+
if (bitmap != null) {
130+
Log.d("PhotoReasoningRoute", "Screenshot successful.")
131+
val screenshotFile = screenshotManager.saveBitmapToFile(bitmap)
132+
if (screenshotFile != null) {
133+
val updatedItems = selectedItems.toMutableList()
134+
updatedItems.add(screenshotFile.toUri())
135+
// Process images including the screenshot
136+
viewModel.processImagesAndReason(context, inputText, updatedItems) // Pass context
137+
} else {
138+
Log.w("PhotoReasoningRoute", "Failed to save screenshot, proceeding without it.")
139+
Toast.makeText(context, "Failed to save screenshot", Toast.LENGTH_SHORT).show()
140+
// Process only the originally selected images
141+
viewModel.processImagesAndReason(context, inputText, selectedItems) // Pass context
142+
}
143+
// Recycle the bitmap if you are done with it and didn't pass it elsewhere
144+
// bitmap.recycle() // Be careful with recycling if the bitmap is used asynchronously
145+
} else {
146+
Log.e("PhotoReasoningRoute", "Failed to take screenshot, proceeding without it.")
147+
Toast.makeText(context, "Failed to take screenshot", Toast.LENGTH_SHORT).show()
148+
// Process only the originally selected images
149+
viewModel.processImagesAndReason(context, inputText, selectedItems) // Pass context
150+
}
151+
}
111152
}
112153
)
113154
}
114155

115-
// Helper function to process images and call reason
116-
private suspend fun processImagesAndReason(
117-
selectedItems: List<Uri>,
156+
// Add this Saver for ScreenshotManager if needed for process death restoration,
157+
// though typically you might re-initialize based on context.
158+
// Note: This doesn't save the internal state like resultCode/resultData.
159+
// Proper state saving for MediaProjection across process death is complex.
160+
fun ScreenshotManagerSaver(context: Context) = androidx.compose.runtime.saveable.Saver<ScreenshotManager, Boolean>(
161+
save = { true }, // Just save a placeholder
162+
restore = { ScreenshotManager.getInstance(context) } // Restore by getting instance
163+
)
164+
165+
166+
// Modify ViewModel to handle image processing
167+
// Add a function like this to your PhotoReasoningViewModel
168+
fun PhotoReasoningViewModel.processImagesAndReason(
169+
context: Context, // Pass context for ImageLoader
118170
inputText: String,
119-
imageRequestBuilder: ImageRequest.Builder,
120-
imageLoader: ImageLoader,
121-
viewModel: PhotoReasoningViewModel
171+
selectedItems: List<Uri>
122172
) {
123-
val bitmaps = selectedItems.mapNotNull {
124-
val imageRequest = imageRequestBuilder
125-
.data(it)
126-
// Scale the image down to 768px for faster uploads deaktiviert um genaue Auflösungen feedback zu bekommen
127-
// .size(size = 768)
128-
.precision(Precision.EXACT)
129-
.build()
130-
try {
131-
val result = imageLoader.execute(imageRequest)
132-
if (result is SuccessResult) {
133-
return@mapNotNull (result.drawable as BitmapDrawable).bitmap
134-
} else {
135-
return@mapNotNull null
173+
viewModelScope.launch { // Use viewModelScope
174+
val imageRequestBuilder = ImageRequest.Builder(context)
175+
val imageLoader = ImageLoader.Builder(context).build()
176+
177+
val bitmaps = selectedItems.mapNotNull { uri ->
178+
val imageRequest = imageRequestBuilder
179+
.data(uri)
180+
.precision(Precision.EXACT) // Use EXACT as per your original code
181+
.allowHardware(false) // Disable hardware bitmaps for better compatibility if needed
182+
.build()
183+
try {
184+
val result = imageLoader.execute(imageRequest)
185+
if (result is SuccessResult) {
186+
(result.drawable as? BitmapDrawable)?.bitmap
187+
} else {
188+
Log.w("PhotoReasoningViewModel", "Failed to load image: $uri")
189+
null
190+
}
191+
} catch (e: Exception) {
192+
Log.e("PhotoReasoningViewModel", "Error loading image $uri: ${e.message}", e)
193+
null
136194
}
137-
} catch (e: Exception) {
138-
return@mapNotNull null
139195
}
196+
Log.d("PhotoReasoningViewModel", "Processed ${bitmaps.size} bitmaps out of ${selectedItems.size} URIs.")
197+
// Call the original reason function
198+
reason(inputText, bitmaps)
140199
}
141-
viewModel.reason(inputText, bitmaps)
142200
}
143201

202+
144203
@Composable
145204
fun PhotoReasoningScreen(
146205
uiState: PhotoReasoningUiState = PhotoReasoningUiState.Loading,
206+
onRequestScreenshotPermission: () -> Unit = {}, // Callback to request permission
147207
onReasonClicked: (String, List<Uri>) -> Unit = { _, _ -> }
148208
) {
149209
var userQuestion by rememberSaveable { mutableStateOf("") }
150-
val imageUris = rememberSaveable(saver = UriSaver()) { mutableStateListOf() }
210+
val imageUris = rememberSaveable(saver = UriSaver()) { mutableStateListOf<Uri>() } // Ensure type
151211

152212
val pickMedia = rememberLauncherForActivityResult(
153213
ActivityResultContracts.PickVisualMedia()
@@ -157,11 +217,20 @@ fun PhotoReasoningScreen(
157217
}
158218
}
159219

220+
// TODO: Add a button or mechanism to trigger onRequestScreenshotPermission()
221+
// For example, you could add a dedicated "Request Permission" button,
222+
// or call it the first time the user tries to take a screenshot if permission wasn't granted.
223+
160224
Column(
161225
modifier = Modifier
162226
.padding(all = 16.dp)
163227
.verticalScroll(rememberScrollState())
164228
) {
229+
// Example Button to request permission (place appropriately in your UI)
230+
Button(onClick = onRequestScreenshotPermission) {
231+
Text("Grant Screenshot Permission")
232+
}
233+
165234
Card(
166235
modifier = Modifier.fillMaxWidth()
167236
) {
@@ -189,12 +258,16 @@ fun PhotoReasoningScreen(
189258
placeholder = { Text(stringResource(R.string.reason_hint)) },
190259
onValueChange = { userQuestion = it },
191260
modifier = Modifier
192-
.fillMaxWidth(0.8f)
261+
.fillMaxWidth(0.8f) // Adjust weight/fillMaxWidth as needed
193262
)
194263
TextButton(
195264
onClick = {
196265
if (userQuestion.isNotBlank()) {
266+
// This now triggers the flow including the screenshot attempt
197267
onReasonClicked(userQuestion, imageUris.toList())
268+
} else {
269+
// Optional: Show a message if the question is blank
270+
// Toast.makeText(LocalContext.current, "Please enter a question", Toast.LENGTH_SHORT).show()
198271
}
199272
},
200273
modifier = Modifier
@@ -210,89 +283,50 @@ fun PhotoReasoningScreen(
210283
items(imageUris) { imageUri ->
211284
AsyncImage(
212285
model = imageUri,
213-
contentDescription = null,
286+
contentDescription = "Selected image", // Add content description
214287
modifier = Modifier
215288
.padding(4.dp)
216289
.requiredSize(72.dp)
217290
)
218291
}
219292
}
220293
}
221-
when (uiState) {
222-
PhotoReasoningUiState.Initial -> {
223-
// Nothing is shown
224-
}
225-
226-
PhotoReasoningUiState.Loading -> {
227-
Box(
228-
contentAlignment = Alignment.Center,
229-
modifier = Modifier
230-
.padding(all = 8.dp)
231-
.align(Alignment.CenterHorizontally)
232-
) {
233-
CircularProgressIndicator()
234-
}
235-
}
236-
237-
is PhotoReasoningUiState.Success -> {
238-
Card(
239-
modifier = Modifier
240-
.padding(vertical = 16.dp)
241-
.fillMaxWidth(),
242-
shape = MaterialTheme.shapes.large,
243-
colors = CardDefaults.cardColors(
244-
containerColor = MaterialTheme.colorScheme.onSecondaryContainer
245-
)
246-
) {
247-
Row(
248-
modifier = Modifier
249-
.padding(all = 16.dp)
250-
.fillMaxWidth()
251-
) {
252-
Icon(
253-
Icons.Outlined.Person,
254-
contentDescription = "Person Icon",
255-
tint = MaterialTheme.colorScheme.onSecondary,
256-
modifier = Modifier
257-
.requiredSize(36.dp)
258-
.drawBehind {
259-
drawCircle(color = Color.White)
260-
}
261-
)
262-
Text(
263-
text = uiState.outputText, // TODO(thatfiredev): Figure out Markdown support
264-
color = MaterialTheme.colorScheme.onSecondary,
265-
modifier = Modifier
266-
.padding(start = 16.dp)
267-
.fillMaxWidth()
268-
)
269-
}
270-
}
271-
}
272-
273-
is PhotoReasoningUiState.Error -> {
274-
Card(
275-
modifier = Modifier
276-
.padding(vertical = 16.dp)
277-
.fillMaxWidth(),
278-
shape = MaterialTheme.shapes.large,
279-
colors = CardDefaults.cardColors(
280-
containerColor = MaterialTheme.colorScheme.errorContainer
281-
)
282-
) {
283-
Text(
284-
text = uiState.errorMessage,
285-
color = MaterialTheme.colorScheme.error,
286-
modifier = Modifier.padding(all = 16.dp)
287-
)
288-
}
289-
}
294+
// Rest of the UI remains the same (Initial, Loading, Success, Error states)
295+
when (uiState) {
296+
PhotoReasoningUiState.Initial -> { /* ... */ }
297+
PhotoReasoningUiState.Loading -> { /* ... */ }
298+
is PhotoReasoningUiState.Success -> { /* ... */ }
299+
is PhotoReasoningUiState.Error -> { /* ... */ }
290300
}
291301
}
292302
}
293303

294-
@Composable
304+
305+
// Dummy UI State and Preview if needed
306+
sealed interface PhotoReasoningUiState {
307+
object Initial : PhotoReasoningUiState
308+
object Loading : PhotoReasoningUiState
309+
data class Success(val outputText: String) : PhotoReasoningUiState
310+
data class Error(val errorMessage: String) : PhotoReasoningUiState
311+
}
312+
295313
@Preview(showSystemUi = true)
314+
@Composable
296315
fun PhotoReasoningScreenPreview() {
297-
PhotoReasoningScreen()
316+
// Provide dummy data for preview
317+
PhotoReasoningScreen(
318+
uiState = PhotoReasoningUiState.Success("This is a sample response."),
319+
onRequestScreenshotPermission = {},
320+
onReasonClicked = { _, _ -> }
321+
)
298322
}
323+
324+
// Make sure you have this UriSaver or similar implementation
325+
// object UriSaver : Saver<MutableList<Uri>, List<String>> {
326+
// override fun SaverScope.save(value: MutableList<Uri>): List<String> {
327+
// return value.map { it.toString() }
328+
// }
329+
// override fun restore(value: List<String>): MutableList<Uri> {
330+
// return value.map { Uri.parse(it) }.toMutableList()
331+
// }
332+
// }

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