Restore swipe to mark as read/unread

app/src/main/java/com/readrops/app/timelime/TimelineItem.kt

@@ -1,9 +1,31 @@
 package com.readrops.app.timelime
 
+import androidx.compose.animation.animateColorAsState
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.SwipeToDismissBox
+import androidx.compose.material3.SwipeToDismissBoxValue
+import androidx.compose.material3.minimumInteractiveComponentSize
+import androidx.compose.material3.rememberSwipeToDismissBoxState
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.unit.dp
+import com.readrops.app.R
 import com.readrops.app.util.DefaultPreview
 import com.readrops.app.util.theme.ReadropsTheme
+import com.readrops.app.util.theme.spacing
 import com.readrops.db.entities.Folder
 import com.readrops.db.pojo.ItemWithFeed
 import java.time.LocalDateTime
@@ -14,42 +36,118 @@ enum class TimelineItemSize {
     LARGE
 }
 
+const val readAlpha = 0.6f
+
+@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun TimelineItem(
     itemWithFeed: ItemWithFeed,
     onClick: () -> Unit,
     onFavorite: () -> Unit,
     onShare: () -> Unit,
+    onSetReadState: () -> Unit,
     modifier: Modifier = Modifier,
-    size: TimelineItemSize = TimelineItemSize.LARGE,
+    size: TimelineItemSize = TimelineItemSize.LARGE
 ) {
-    when (size) {
-        TimelineItemSize.COMPACT -> {
-            CompactTimelineItem(
-                itemWithFeed = itemWithFeed,
-                onClick = onClick,
-                onFavorite = onFavorite,
-                onShare = onShare,
-                modifier = modifier
-            )
+    val swipeState = rememberSwipeToDismissBoxState()
+
+    LaunchedEffect(swipeState.currentValue) {
+        if (swipeState.currentValue == SwipeToDismissBoxValue.EndToStart) {
+            onSetReadState()
+            swipeState.snapTo(SwipeToDismissBoxValue.Settled)
         }
-        TimelineItemSize.REGULAR -> {
-            RegularTimelineItem(
-                itemWithFeed = itemWithFeed,
-                onClick = onClick,
-                onFavorite = onFavorite,
-                onShare = onShare,
-                modifier = modifier
+    }
+
+    SwipeToDismissBox(
+        state = swipeState,
+        enableDismissFromStartToEnd = false,
+        backgroundContent = {
+            val color by animateColorAsState(
+                targetValue = when (swipeState.targetValue) {
+                    SwipeToDismissBoxValue.EndToStart -> MaterialTheme.colorScheme.primary
+                    else -> Color.Transparent
+                },
+                label = "Swipe to dismiss background color"
             )
+
+            val iconColor by animateColorAsState(
+                targetValue = when (swipeState.targetValue) {
+                    SwipeToDismissBoxValue.EndToStart -> MaterialTheme.colorScheme.onPrimary
+                    else -> Color.Transparent
+                },
+                label = "Swipe to dismiss icon color"
+            )
+
+            Box(
+                modifier = Modifier.padding(
+                    horizontal = if (size == TimelineItemSize.COMPACT) {
+                        0.dp
+                    } else {
+                        MaterialTheme.spacing.shortSpacing
+                    }
+                )
+            ) {
+                Box(
+                    contentAlignment = Alignment.CenterEnd,
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .then(
+                            if (size == TimelineItemSize.COMPACT) {
+                                Modifier
+                            } else {
+                                Modifier.clip(CardDefaults.shape)
+                            }
+                        )
+                        .background(color)
+                ) {
+                    Icon(
+                        painter = painterResource(
+                            id = if (itemWithFeed.item.isRead) {
+                                R.drawable.ic_remove_done
+                            } else {
+                                R.drawable.ic_done_all
+                            }
+                        ),
+                        contentDescription = null,
+                        tint = iconColor,
+                        modifier = Modifier
+                            .minimumInteractiveComponentSize()
+                            .padding(end = MaterialTheme.spacing.mediumSpacing)
+                    )
+                }
+            }
         }
-        TimelineItemSize.LARGE -> {
-            LargeTimelineItem(
-                itemWithFeed = itemWithFeed,
-                onClick = onClick,
-                onFavorite = onFavorite,
-                onShare = onShare,
-                modifier = modifier
-            )
+    ) {
+        when (size) {
+            TimelineItemSize.COMPACT -> {
+                CompactTimelineItem(
+                    itemWithFeed = itemWithFeed,
+                    onClick = onClick,
+                    onFavorite = onFavorite,
+                    onShare = onShare,
+                    modifier = modifier
+                )
+            }
+
+            TimelineItemSize.REGULAR -> {
+                RegularTimelineItem(
+                    itemWithFeed = itemWithFeed,
+                    onClick = onClick,
+                    onFavorite = onFavorite,
+                    onShare = onShare,
+                    modifier = modifier
+                )
+            }
+
+            TimelineItemSize.LARGE -> {
+                LargeTimelineItem(
+                    itemWithFeed = itemWithFeed,
+                    onClick = onClick,
+                    onFavorite = onFavorite,
+                    onShare = onShare,
+                    modifier = modifier
+                )
+            }
         }
     }
 }

app/src/main/java/com/readrops/app/timelime/TimelineItemParts.kt

@@ -3,6 +3,7 @@ package com.readrops.app.timelime
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.aspectRatio
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -24,6 +25,8 @@ import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
+import androidx.compose.ui.draw.drawBehind
+import androidx.compose.ui.geometry.CornerRadius
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalContext
@@ -94,11 +97,18 @@ fun CompactTimelineItem(
     onShare: () -> Unit,
     modifier: Modifier = Modifier
 ) {
+    val containerColor = MaterialTheme.colorScheme.background
+
     Surface(
         color = MaterialTheme.colorScheme.surfaceVariant,
         modifier = modifier
             .fillMaxWidth()
-            .alpha(if (itemWithFeed.item.isRead) 0.6f else 1f)
+            .drawBehind {
+                // if some alpha is applied to the card, the swipe to dismiss background appears behind it
+                // so we draw a rect with the current screen background color behind the card but in front of the dismiss background
+                drawRect(containerColor)
+            }
+            .alpha(if (itemWithFeed.item.isRead) readAlpha else 1f)
             .clickable { onClick() }
     ) {
         Column(
@@ -147,7 +157,8 @@ fun LargeTimelineItem(
             itemWithFeed = itemWithFeed,
             onClick = onClick,
             onFavorite = onFavorite,
-            onShare = onShare
+            onShare = onShare,
+            modifier = modifier
         )
     } else {
         TimelineItemContainer(
@@ -222,13 +233,24 @@ fun TimelineItemContainer(
     isRead: Boolean,
     onClick: () -> Unit,
     modifier: Modifier = Modifier,
+    padding: PaddingValues = PaddingValues(horizontal = MaterialTheme.spacing.shortSpacing),
     content: @Composable () -> Unit
 ) {
+    val containerColor = MaterialTheme.colorScheme.background
+
     Card(
         modifier = modifier
-            .padding(horizontal = MaterialTheme.spacing.shortSpacing)
+            .padding(padding)
             .fillMaxWidth()
-            .alpha(if (isRead) 0.6f else 1f)
+            .drawBehind {
+                // if some alpha is applied to the card, the swipe to dismiss background appears behind it
+                // so we draw a rect with the current screen background color behind the card but in front of the dismiss background
+                drawRoundRect(
+                    color = containerColor,
+                    cornerRadius = CornerRadius(12.dp.toPx())
+                )
+            }
+            .alpha(if (isRead) readAlpha else 1f)
             .clickable { onClick() }
     ) {
         content()

app/src/main/java/com/readrops/app/timelime/TimelineScreenModel.kt

@@ -297,15 +297,21 @@ class TimelineScreenModel(
 
     fun setItemRead(item: Item) {
         item.isRead = true
-        updateItemReadState(item)
-    }
 
-    private fun updateItemReadState(item: Item) {
         screenModelScope.launch(dispatcher) {
             repository?.setItemReadState(item)
         }
     }
 
+    fun updateItemReadState(item: Item) {
+        screenModelScope.launch(dispatcher) {
+            with(item) {
+                isRead = !isRead
+                repository?.setItemReadState(this)
+            }
+        }
+    }
+
     fun updateStarState(item: Item) {
         screenModelScope.launch(dispatcher) {
             with(item) {

app/src/main/java/com/readrops/app/timelime/TimelineTab.kt

@@ -403,9 +403,11 @@ object TimelineTab : Tab {
                                                         context
                                                     )
                                                 },
+                                                onSetReadState = {
+                                                    screenModel.updateItemReadState(itemWithFeed.item)
+                                                },
                                                 size = state.itemSize
                                             )
-
                                         }
                                     }
                                 }