Update announcements to use swipe to dismiss

lawnchair/src/app/lawnchair/ui/preferences/components/AnnouncementPreference.kt

@@ -7,29 +7,32 @@ import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.offset
 import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.width
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.rounded.Launch
-import androidx.compose.material.icons.rounded.Close
 import androidx.compose.material.icons.rounded.NewReleases
 import androidx.compose.material3.Icon
-import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
+import androidx.compose.material3.SwipeToDismissBox
+import androidx.compose.material3.SwipeToDismissBoxValue
 import androidx.compose.material3.Text
+import androidx.compose.material3.rememberSwipeToDismissBoxState
+import androidx.compose.material3.surfaceColorAtElevation
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
@@ -40,6 +43,7 @@ import app.lawnchair.ui.preferences.data.liveinfo.liveInformationManager
 import app.lawnchair.ui.preferences.data.liveinfo.model.Announcement
 import app.lawnchair.ui.util.addIf
 import com.android.launcher3.BuildConfig
+import com.android.launcher3.R
 import kotlinx.collections.immutable.ImmutableList
 
 @Composable
@@ -66,7 +70,7 @@ fun AnnouncementPreference(
         modifier = modifier,
     ) {
         announcements.forEachIndexed { index, announcement ->
-            var show by remember { mutableStateOf(true) }
+            var show by rememberSaveable { mutableStateOf(true) }
             AnnouncementItem(show, announcement) { show = false }
             if (index != announcements.lastIndex && show && (!announcement.test || BuildConfig.DEBUG)) {
                 Spacer(modifier = Modifier.height(16.dp))
@@ -103,13 +107,60 @@ private fun AnnouncementItemContent(
     modifier: Modifier = Modifier,
     onClose: () -> Unit,
 ) {
-    Surface(
-        modifier = modifier
-            .padding(16.dp, 0.dp, 16.dp, 0.dp),
-        shape = MaterialTheme.shapes.large,
-        color = MaterialTheme.colorScheme.surfaceVariant,
+    val state = rememberSwipeToDismissBoxState(
+        confirmValueChange = {
+            when (it) {
+                SwipeToDismissBoxValue.StartToEnd -> {
+                    onClose()
+                }
+                SwipeToDismissBoxValue.EndToStart -> return@rememberSwipeToDismissBoxState false
+                SwipeToDismissBoxValue.Settled -> return@rememberSwipeToDismissBoxState false
+            }
+            return@rememberSwipeToDismissBoxState true
+        },
+    )
+
+    SwipeToDismissBox(
+        state = state,
+        enableDismissFromEndToStart = false,
+        backgroundContent = {
+            Surface(
+                modifier = modifier
+                    .alpha(
+                        if (state.dismissDirection != SwipeToDismissBoxValue.StartToEnd) 1f else calculateAlpha(state.progress),
+                    )
+                    .fillMaxSize()
+                    .padding(16.dp, 0.dp, 16.dp, 0.dp),
+                shape = MaterialTheme.shapes.large,
+                color = MaterialTheme.colorScheme.surfaceColorAtElevation(1.dp),
+            ) {
+                PreferenceTemplate(
+                    {},
+                    description = {
+                        Text(stringResource(R.string.accessibility_close))
+                    },
+                )
+            }
+        },
     ) {
-        AnnouncementPreferenceItemContent(text = text, url = url, onClose = onClose)
+        Surface(
+            modifier = modifier
+                .alpha(
+                    if (state.dismissDirection != SwipeToDismissBoxValue.StartToEnd) 1f else calculateAlpha(state.progress),
+                )
+                .padding(16.dp, 0.dp, 16.dp, 0.dp),
+            shape = MaterialTheme.shapes.large,
+            color = MaterialTheme.colorScheme.surfaceVariant,
+        ) {
+            AnnouncementPreferenceItemContent(text = text, url = url)
+        }
+    }
+}
+
+private fun calculateAlpha(progress: Float): Float {
+    return when {
+        progress < 0.5f -> 1f // Fully opaque until halfway
+        else -> 1f - (progress - 0.5f) * 2 // Fade out linearly from halfway to the end
     }
 }
 
@@ -118,7 +169,6 @@ private fun AnnouncementPreferenceItemContent(
     text: String,
     url: String?,
     modifier: Modifier = Modifier,
-    onClose: (() -> Unit)?,
 ) {
     val context = LocalContext.current
     val hasLink = !url.isNullOrBlank()
@@ -165,19 +215,6 @@ private fun AnnouncementPreferenceItemContent(
                 }
 
                 Spacer(modifier = Modifier.width(8.dp))
-
-                if (onClose != null) {
-                    IconButton(
-                        onClick = onClose,
-                        modifier = Modifier.size(16.dp).offset(x = (8).dp, y = (-16).dp),
-                    ) {
-                        Icon(
-                            imageVector = Icons.Rounded.Close,
-                            tint = MaterialTheme.colorScheme.surfaceTint,
-                            contentDescription = null,
-                        )
-                    }
-                }
             }
         },
     )
@@ -189,7 +226,6 @@ private fun InfoPreferenceWithoutLinkPreview() {
     AnnouncementPreferenceItemContent(
         text = "Very important announcement ",
         url = "",
-        onClose = null,
     )
 }
 
@@ -199,6 +235,5 @@ private fun InfoPreferenceWithLinkPreview() {
     AnnouncementPreferenceItemContent(
         text = "Very important announcement with a very important link",
         url = "https://lawnchair.app/",
-        onClose = null,
     )
 }

lawnchair/src/app/lawnchair/ui/preferences/data/liveinfo/model/LiveInformation.kt

@@ -6,6 +6,7 @@ import kotlinx.serialization.Serializable
 
 @Serializable
 data class LiveInformation(
+    private val version: Int,
     private val announcements: List<Announcement>,
 ) {
 
@@ -14,6 +15,7 @@ data class LiveInformation(
 
     companion object {
         val default = LiveInformation(
+            version = 1,
             announcements = emptyList(),
         )
     }

lawnchair/src/app/lawnchair/ui/preferences/destinations/PreferencesDashboard.kt

@@ -183,7 +183,7 @@ fun PreferencesOverflowMenu(
                 Modifier
                     .clip(highlightShape)
                     .background(highlightColor)
-            }
+            },
         )
     }
     val openRestoreBackup = restoreBackupOpener()