ChapterDownloadIndicator: Fixes and improvements (#7485)

* Increased touch target
* Fix downloaded icon smaller than other states
* Deferred state reads to minimize recompose works
* Move things around to eliminate unnecessary elements

app/src/main/java/eu/kanade/presentation/components/ChapterDownloadIndicator.kt

@@ -1,21 +1,22 @@
 package eu.kanade.presentation.components
 
 import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.foundation.combinedClickable
+import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.ArrowDownward
 import androidx.compose.material.icons.filled.CheckCircle
+import androidx.compose.material.ripple.rememberRipple
 import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.material3.Icon
-import androidx.compose.material3.LocalMinimumTouchTargetEnforcement
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.ProgressIndicatorDefaults
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -24,6 +25,7 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.semantics.Role
 import androidx.compose.ui.unit.dp
 import eu.kanade.presentation.manga.ChapterDownloadAction
 import eu.kanade.presentation.util.secondaryItemAlpha
@@ -33,23 +35,18 @@ import eu.kanade.tachiyomi.data.download.model.Download
 @Composable
 fun ChapterDownloadIndicator(
     modifier: Modifier = Modifier,
-    downloadState: Download.State,
-    downloadProgress: Int,
+    downloadStateProvider: () -> Download.State,
+    downloadProgressProvider: () -> Int,
     onClick: (ChapterDownloadAction) -> Unit,
 ) {
-    Box(modifier = modifier, contentAlignment = Alignment.Center) {
-        CompositionLocalProvider(LocalMinimumTouchTargetEnforcement provides false) {
+    val downloadState = downloadStateProvider()
     val isDownloaded = downloadState == Download.State.DOWNLOADED
     val isDownloading = downloadState != Download.State.NOT_DOWNLOADED
     var isMenuExpanded by remember(downloadState) { mutableStateOf(false) }
-            IconButton(
-                onClick = {
-                    if (isDownloaded || isDownloading) {
-                        isMenuExpanded = true
-                    } else {
-                        onClick(ChapterDownloadAction.START)
-                    }
-                },
+    Box(
+        modifier = modifier
+            .size(IconButtonTokens.StateLayerSize)
+            .combinedClickable(
                 onLongClick = {
                     val chapterDownloadAction = when {
                         isDownloaded -> ChapterDownloadAction.DELETE
@@ -58,15 +55,27 @@ fun ChapterDownloadIndicator(
                     }
                     onClick(chapterDownloadAction)
                 },
+                onClick = {
+                    if (isDownloaded || isDownloading) {
+                        isMenuExpanded = true
+                    } else {
+                        onClick(ChapterDownloadAction.START)
+                    }
+                },
+                role = Role.Button,
+                interactionSource = remember { MutableInteractionSource() },
+                indication = rememberRipple(
+                    bounded = false,
+                    radius = IconButtonTokens.StateLayerSize / 2,
+                ),
+            ),
+        contentAlignment = Alignment.Center,
     ) {
-                val indicatorModifier = Modifier
-                    .size(IndicatorSize)
-                    .padding(IndicatorPadding)
         if (isDownloaded) {
             Icon(
                 imageVector = Icons.Default.CheckCircle,
                 contentDescription = null,
-                        modifier = indicatorModifier,
+                modifier = Modifier.size(IndicatorSize),
                 tint = MaterialTheme.colorScheme.onSurfaceVariant,
             )
             DropdownMenu(expanded = isMenuExpanded, onDismissRequest = { isMenuExpanded = false }) {
@@ -80,18 +89,16 @@ fun ChapterDownloadIndicator(
             }
         } else {
             val inactiveAlphaModifier = if (!isDownloading) Modifier.secondaryItemAlpha() else Modifier
-                    val arrowModifier = Modifier
-                        .size(IndicatorSize - 7.dp)
-                        .then(inactiveAlphaModifier)
             val arrowColor: Color
             val strokeColor = MaterialTheme.colorScheme.onSurfaceVariant
             if (isDownloading) {
+                val downloadProgress = downloadProgressProvider()
                 val indeterminate = downloadState == Download.State.QUEUE ||
                     (downloadState == Download.State.DOWNLOADING && downloadProgress == 0)
                 if (indeterminate) {
                     arrowColor = strokeColor
                     CircularProgressIndicator(
-                                modifier = indicatorModifier,
+                        modifier = IndicatorModifier,
                         color = strokeColor,
                         strokeWidth = IndicatorStrokeWidth,
                     )
@@ -107,26 +114,11 @@ fun ChapterDownloadIndicator(
                     }
                     CircularProgressIndicator(
                         progress = animatedProgress,
-                                modifier = indicatorModifier,
+                        modifier = IndicatorModifier,
                         color = strokeColor,
                         strokeWidth = IndicatorSize / 2,
                     )
                 }
-                    } else {
-                        arrowColor = strokeColor
-                        CircularProgressIndicator(
-                            progress = 1f,
-                            modifier = indicatorModifier.then(inactiveAlphaModifier),
-                            color = strokeColor,
-                            strokeWidth = IndicatorStrokeWidth,
-                        )
-                    }
-                    Icon(
-                        imageVector = Icons.Default.ArrowDownward,
-                        contentDescription = null,
-                        modifier = arrowModifier,
-                        tint = arrowColor,
-                    )
                 DropdownMenu(expanded = isMenuExpanded, onDismissRequest = { isMenuExpanded = false }) {
                     DropdownMenuItem(
                         text = { Text(text = stringResource(R.string.action_start_downloading_now)) },
@@ -143,8 +135,21 @@ fun ChapterDownloadIndicator(
                         },
                     )
                 }
+            } else {
+                arrowColor = strokeColor
+                CircularProgressIndicator(
+                    progress = 1f,
+                    modifier = IndicatorModifier.then(inactiveAlphaModifier),
+                    color = strokeColor,
+                    strokeWidth = IndicatorStrokeWidth,
+                )
             }
-            }
+            Icon(
+                imageVector = Icons.Default.ArrowDownward,
+                contentDescription = null,
+                modifier = ArrowModifier.then(inactiveAlphaModifier),
+                tint = arrowColor,
+            )
         }
     }
 }
@@ -154,3 +159,9 @@ private val IndicatorPadding = 2.dp
 
 // To match composable parameter name when used later
 private val IndicatorStrokeWidth = IndicatorPadding
+
+private val IndicatorModifier = Modifier
+    .size(IndicatorSize)
+    .padding(IndicatorPadding)
+private val ArrowModifier = Modifier
+    .size(IndicatorSize - 7.dp)

app/src/main/java/eu/kanade/presentation/manga/MangaScreen.kt

@@ -685,8 +685,8 @@ private fun LazyListScope.sharedChapterItems(
             read = chapter.read,
             bookmark = chapter.bookmark,
             selected = selected.contains(chapterItem),
-            downloadState = downloadState,
-            downloadProgress = downloadProgress,
+            downloadStateProvider = { downloadState },
+            downloadProgressProvider = { downloadProgress },
             onLongClick = {
                 val dispatched = onChapterItemLongClick(
                     chapterItem = chapterItem,

app/src/main/java/eu/kanade/presentation/manga/components/MangaChapterListItem.kt

@@ -44,8 +44,8 @@ fun MangaChapterListItem(
     read: Boolean,
     bookmark: Boolean,
     selected: Boolean,
-    downloadState: Download.State,
-    downloadProgress: Int,
+    downloadStateProvider: () -> Download.State,
+    downloadProgressProvider: () -> Int,
     onLongClick: () -> Unit,
     onClick: () -> Unit,
     onDownloadClick: ((ChapterDownloadAction) -> Unit)?,
@@ -127,8 +127,8 @@ fun MangaChapterListItem(
         if (onDownloadClick != null) {
             ChapterDownloadIndicator(
                 modifier = Modifier.padding(start = 4.dp),
-                downloadState = downloadState,
-                downloadProgress = downloadProgress,
+                downloadStateProvider = downloadStateProvider,
+                downloadProgressProvider = downloadProgressProvider,
                 onClick = onDownloadClick,
             )
         }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChapterDownloadView.kt

@@ -27,8 +27,8 @@ class ChapterDownloadView @JvmOverloads constructor(
     override fun Content() {
         TachiyomiTheme {
             ChapterDownloadIndicator(
-                downloadState = state,
-                downloadProgress = progress,
+                downloadStateProvider = { state },
+                downloadProgressProvider = { progress },
                 onClick = listener,
             )
         }