Deleting images from the file system when the recipe gets deleted and a nice fade animation for previews with multiple images

app/src/main/java/xyz/pixelatedw/recipe/data/Recipe.kt

@@ -25,8 +25,8 @@ data class Recipe(
 	val content: String,
 	val hash: Int
 ) {
-	fun previewImage(ctx: Context): Bitmap? {
+	fun previewImage(ctx: Context, idx: Int): Bitmap? {
-		return showImage(ctx, 0)
+		return showImage(ctx, idx)
 	}
 
 	fun showImage(ctx: Context, idx: Int): Bitmap? {

app/src/main/java/xyz/pixelatedw/recipe/ui/components/MainScreen.kt

@@ -33,6 +33,7 @@ import xyz.pixelatedw.recipe.MainActivity
 import xyz.pixelatedw.recipe.R
 import xyz.pixelatedw.recipe.data.RecipeWithTags
 import xyz.pixelatedw.recipe.data.RecipesView
+import java.io.File
 
 @Composable
 fun MainScreen(ctx: MainActivity, padding: PaddingValues, view: RecipesView) {
@@ -140,9 +141,8 @@ fun MainScreen(ctx: MainActivity, padding: PaddingValues, view: RecipesView) {
 				LazyColumn {
 					items(recipes.value) { entry ->
 						if (isInSearch(entry)) {
-							val previewUri = entry.recipe.previewImage(LocalContext.current)
 							val isSelected = selectedEntries.value.contains(entry)
-							RecipePreview(entry, previewUri, isSelected, onClick = {
+							RecipePreview(entry, isSelected, onClick = {
 								view.setActive(entry)
 								navController.navigate("info")
 							}, onSelected = { flag ->
@@ -167,6 +167,13 @@ fun MainScreen(ctx: MainActivity, padding: PaddingValues, view: RecipesView) {
 							// TODO I feel like this could be done in batch or something...but I truly don't care atm
 							for (entry in selectedEntries.value) {
 								view.removeRecipe(entry)
+
+								// TODO This needs some refcounting or database stuff so it doesn't delete pics if they're used by multiple recipes, however this is not a problem atm
+								// Make sure to delete the pics from phone's storage so they don't waste space
+								for (picPath in entry.recipe.pics) {
+									File(ctx.filesDir, picPath).delete()
+								}
+
 								ctx.db.recipeDao().delete(entry.recipe)
 								ctx.db.recipeWithTagsDao().delete(entry.recipe.title)
 							}

app/src/main/java/xyz/pixelatedw/recipe/ui/components/RecipePreview.kt

@@ -1,9 +1,12 @@
 package xyz.pixelatedw.recipe.ui.components
 
-import android.graphics.Bitmap
+import androidx.compose.animation.AnimatedContent
+import androidx.compose.animation.core.tween
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.animation.togetherWith
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.background
-import androidx.compose.foundation.clickable
 import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
@@ -14,52 +17,98 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.ImageBitmap
 import androidx.compose.ui.graphics.asImageBitmap
-import androidx.compose.ui.graphics.vector.ImageVector
 import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.imageResource
-import androidx.compose.ui.res.vectorResource
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.em
+import kotlinx.coroutines.delay
 import xyz.pixelatedw.recipe.R
-import xyz.pixelatedw.recipe.data.Recipe
 import xyz.pixelatedw.recipe.data.RecipeWithTags
+import kotlin.time.Duration.Companion.seconds
 
 @Composable
-fun RecipePreview(entry: RecipeWithTags, previewUri: Bitmap?, isSelected: Boolean, onClick: () -> Unit, onSelected: (Boolean) -> Unit) {
+fun RecipePreview(
-	Column(modifier = Modifier
+	entry: RecipeWithTags,
-		.background(color = if(isSelected) Color(0x11FF0000) else Color(0x00FFFFFF) )
+	isSelected: Boolean,
+	onClick: () -> Unit,
+	onSelected: (Boolean) -> Unit
+) {
+	val availablePics = entry.recipe.pics.size
+	var displayImageId by remember { mutableIntStateOf(0) }
+	if (availablePics > 0) {
+		LaunchedEffect(Unit) {
+			while (true) {
+				delay(5.seconds)
+				displayImageId = (displayImageId + 1) % availablePics
+			}
+		}
+	}
+
+	val displayImage = entry.recipe.previewImage(LocalContext.current, displayImageId)
+
+	Column(
+		modifier = Modifier
+			.background(color = if (isSelected) Color(0x11FF0000) else Color(0x00FFFFFF))
 			.padding(8.dp)
 			.combinedClickable(
 				onLongClick = { onSelected(!isSelected) },
 				onClick = onClick
-		)) {
+			)
-		Row(horizontalArrangement = Arrangement.Center, modifier = Modifier.fillMaxWidth().height(256.dp)) {
+	) {
-			if (previewUri != null) {
+		Row(
+			horizontalArrangement = Arrangement.Center,
+			modifier = Modifier
+				.fillMaxWidth()
+				.height(256.dp)
+		) {
+			if (displayImage != null) {
+				AnimatedContent(
+					displayImage,
+					label = "Recipe Preview",
+					transitionSpec = {
+						fadeIn(animationSpec = tween(500))
+							.togetherWith(fadeOut(animationSpec = tween(500)))
+					}
+				) { targetImage ->
 					Image(
-					bitmap = previewUri.asImageBitmap(),
+						bitmap = targetImage.asImageBitmap(),
 						contentDescription = "Recipe image",
 						contentScale = ContentScale.Crop,
-					modifier = Modifier.size(256.dp).padding(top = 16.dp, bottom = 8.dp),
+						modifier = Modifier
+							.size(256.dp)
+							.padding(top = 16.dp, bottom = 8.dp),
 					)
+
 				}
-			else {
+			} else {
 				Image(
 					bitmap = ImageBitmap.imageResource(R.drawable.missing_image),
 					contentDescription = "Missing recipe image",
 					contentScale = ContentScale.Crop,
-					modifier = Modifier.size(256.dp).padding(top = 16.dp, bottom = 8.dp),
+					modifier = Modifier
+						.size(256.dp)
+						.padding(top = 16.dp, bottom = 8.dp),
 				)
 			}
 		}
-		Row(horizontalArrangement = Arrangement.Center, modifier = Modifier.fillMaxWidth().padding(bottom = 8.dp)) {
+		Row(
+			horizontalArrangement = Arrangement.Center,
+			modifier = Modifier
+				.fillMaxWidth()
+				.padding(bottom = 8.dp)
+		) {
 			Text(
 				text = entry.recipe.title,
 				modifier = Modifier.fillMaxWidth(),
@@ -69,7 +118,12 @@ fun RecipePreview(entry: RecipeWithTags, previewUri: Bitmap?, isSelected: Boolea
 				)
 			)
 		}
-		Row(horizontalArrangement = Arrangement.End, modifier = Modifier.fillMaxWidth().padding(bottom = 16.dp)) {
+		Row(
+			horizontalArrangement = Arrangement.End,
+			modifier = Modifier
+				.fillMaxWidth()
+				.padding(bottom = 16.dp)
+		) {
 			for (tag in entry.tags) {
 				Tag(tag)
 			}