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Avoid calling Bitmap.asImageBitmap() too often

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This commit is contained in:
Pierre-Yves Nicolas
2025-06-26 08:07:12 +02:00
parent b9cb072be8
commit d28ade8518
1 changed files with 54 additions and 52 deletions
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14
app/src/main/java/org/mydomain/myscan/view/CameraScreen.kt
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@@ -61,6 +61,7 @@ import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier import androidx.compose.ui.Modifier
import androidx.compose.ui.geometry.Offset import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.graphics.Color import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.ImageBitmap
import androidx.compose.ui.graphics.asImageBitmap import androidx.compose.ui.graphics.asImageBitmap
import androidx.compose.ui.graphics.graphicsLayer import androidx.compose.ui.graphics.graphicsLayer
import androidx.compose.ui.layout.boundsInWindow import androidx.compose.ui.layout.boundsInWindow
@@ -182,13 +183,14 @@ private fun CameraScreenScaffold(
) )
} }
} }
CapturedImage(cameraUiState, thumbnailCoords) cameraUiState.captureState.processedImage?.let {
image -> CapturedImage(image.asImageBitmap(), thumbnailCoords)
}
} }
} }
@Composable @Composable
private fun CapturedImage(cameraUiState: CameraUiState, thumbnailCoords: MutableState<Offset>) { private fun CapturedImage(image: ImageBitmap, thumbnailCoords: MutableState<Offset>) {
cameraUiState.captureState.processedImage?.let { image ->
Surface( Surface(
color = Color.Black.copy(alpha = 0.3f), color = Color.Black.copy(alpha = 0.3f),
modifier = Modifier.fillMaxSize(), modifier = Modifier.fillMaxSize(),
@@ -217,7 +219,8 @@ private fun CapturedImage(cameraUiState: CameraUiState, thumbnailCoords: Mutable
label = "scale" label = "scale"
) { if (it) 0.3f else 1f } ) { if (it) 0.3f else 1f }
Box (modifier = Modifier Box (contentAlignment = Alignment.BottomStart,
modifier = Modifier
.fillMaxHeight(0.8f) .fillMaxHeight(0.8f)
.onGloballyPositioned { coordinates -> .onGloballyPositioned { coordinates ->
val bounds = coordinates.boundsInWindow() val bounds = coordinates.boundsInWindow()
@@ -230,7 +233,7 @@ private fun CapturedImage(cameraUiState: CameraUiState, thumbnailCoords: Mutable
} }
) { ) {
Image( Image(
bitmap = image.asImageBitmap(), bitmap = image,
contentDescription = null, contentDescription = null,
modifier = Modifier modifier = Modifier
.fillMaxSize() .fillMaxSize()
@@ -244,7 +247,6 @@ private fun CapturedImage(cameraUiState: CameraUiState, thumbnailCoords: Mutable
) )
} }
} }
}
@Composable @Composable
fun CaptureButton(onClick: () -> Unit, modifier: Modifier) { fun CaptureButton(onClick: () -> Unit, modifier: Modifier) {