Pinned messages : add pin icon in timeline for pinned events.

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/TimelineView.kt

@@ -128,8 +128,8 @@ fun TimelineView(
         Box(modifier) {
             LazyColumn(
                 modifier = Modifier
-                        .fillMaxSize()
-                        .nestedScroll(nestedScrollConnection),
+                    .fillMaxSize()
+                    .nestedScroll(nestedScrollConnection),
                 state = lazyListState,
                 reverseLayout = useReverseLayout,
                 contentPadding = PaddingValues(vertical = 8.dp),
@@ -269,8 +269,8 @@ private fun BoxScope.TimelineScrollHelper(
         // Use inverse of canAutoScroll otherwise we might briefly see the before the scroll animation is triggered
         isVisible = !canAutoScroll || forceJumpToBottomVisibility || !isLive,
         modifier = Modifier
-                .align(Alignment.BottomEnd)
-                .padding(end = 24.dp, bottom = 12.dp),
+            .align(Alignment.BottomEnd)
+            .padding(end = 24.dp, bottom = 12.dp),
         onClick = { jumpToBottom() },
     )
 }
@@ -297,8 +297,8 @@ private fun JumpToBottomButton(
         ) {
             Icon(
                 modifier = Modifier
-                        .size(24.dp)
-                        .rotate(90f),
+                    .size(24.dp)
+                    .rotate(90f),
                 imageVector = CompoundIcons.ArrowRight(),
                 contentDescription = stringResource(id = CommonStrings.a11y_jump_to_bottom)
             )
@@ -312,12 +312,18 @@ internal fun TimelineViewPreview(
     @PreviewParameter(TimelineItemEventContentProvider::class) content: TimelineItemEventContent
 ) = ElementPreview {
     val timelineItems = aTimelineItemList(content)
+    val timelineEvents = timelineItems.filterIsInstance<TimelineItem.Event>()
+    val lastEventIdFromMe = timelineEvents.firstOrNull { it.isMine }?.eventId
+    val lastEventIdFromOther = timelineEvents.firstOrNull { !it.isMine }?.eventId
     CompositionLocalProvider(
         LocalTimelineItemPresenterFactories provides aFakeTimelineItemPresenterFactories(),
     ) {
         TimelineView(
             state = aTimelineState(
                 timelineItems = timelineItems,
+                timelineRoomInfo = aTimelineRoomInfo(
+                    pinnedEventIds = listOfNotNull(lastEventIdFromMe, lastEventIdFromOther)
+                ),
                 focusedEventIndex = 0,
             ),
             typingNotificationState = aTypingNotificationState(),

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/MessageEventBubble.kt

@@ -11,8 +11,7 @@ import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.offset
+import androidx.compose.foundation.layout.BoxWithConstraints
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.widthIn
@@ -40,6 +39,7 @@ import io.element.android.libraries.core.extensions.to01
 import io.element.android.libraries.designsystem.components.avatar.AvatarSize
 import io.element.android.libraries.designsystem.preview.ElementPreview
 import io.element.android.libraries.designsystem.preview.PreviewsDayNight
+import io.element.android.libraries.designsystem.text.toDp
 import io.element.android.libraries.designsystem.text.toPx
 import io.element.android.libraries.designsystem.theme.components.Surface
 import io.element.android.libraries.designsystem.theme.components.Text
@@ -49,11 +49,11 @@ import io.element.android.libraries.testtags.TestTags
 import io.element.android.libraries.testtags.testTag
 
 private val BUBBLE_RADIUS = 12.dp
-internal val BUBBLE_INCOMING_OFFSET = 16.dp
 private val avatarRadius = AvatarSize.TimelineSender.dp / 2
 
-// Design says: The maximum width of a bubble is still 3/4 of the screen width. But try with 85% now.
-private const val BUBBLE_WIDTH_RATIO = 0.85f
+// Design says: The maximum width of a bubble is still 3/4 of the screen width. But try with 78% now.
+private const val BUBBLE_WIDTH_RATIO = 0.78f
+private val MIN_BUBBLE_WIDTH = 80.dp
 
 @OptIn(ExperimentalFoundationApi::class)
 @Composable
@@ -93,14 +93,6 @@ fun MessageEventBubble(
         }
     }
 
-    fun Modifier.offsetForItem(): Modifier {
-        return when {
-            state.isMine -> this
-            state.timelineRoomInfo.isDm -> this
-            else -> offset(x = BUBBLE_INCOMING_OFFSET)
-        }
-    }
-
     // Ignore state.isHighlighted for now, we need a design decision on it.
     val backgroundBubbleColor = when {
         state.isMine -> ElementTheme.colors.messageFromMeBackground
@@ -109,11 +101,8 @@ fun MessageEventBubble(
     val bubbleShape = bubbleShape()
     val radiusPx = (avatarRadius + SENDER_AVATAR_BORDER_WIDTH).toPx()
     val yOffsetPx = -(NEGATIVE_MARGIN_FOR_BUBBLE + avatarRadius).toPx()
-    Box(
+    BoxWithConstraints(
         modifier = modifier
-            .fillMaxWidth(BUBBLE_WIDTH_RATIO)
-            .padding(start = avatarRadius, end = 16.dp)
-            .offsetForItem()
             .graphicsLayer {
                 compositingStrategy = CompositingStrategy.Offscreen
             }
@@ -138,7 +127,10 @@ fun MessageEventBubble(
         Surface(
             modifier = Modifier
                 .testTag(TestTags.messageBubble)
-                .widthIn(min = 80.dp)
+                .widthIn(
+                    min = MIN_BUBBLE_WIDTH,
+                    max = (constraints.maxWidth * BUBBLE_WIDTH_RATIO).toInt().toDp()
+                )
                 .clip(bubbleShape)
                 .combinedClickable(
                     onClick = onClick,

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/TimelineItemEventRow.kt

@@ -22,6 +22,7 @@ import androidx.compose.foundation.layout.absoluteOffset
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.layout.wrapContentHeight
 import androidx.compose.foundation.shape.RoundedCornerShape
@@ -100,6 +101,8 @@ val NEGATIVE_MARGIN_FOR_BUBBLE = (-8).dp
 // Width of the transparent border around the sender avatar
 val SENDER_AVATAR_BORDER_WIDTH = 3.dp
 
+private val BUBBLE_INCOMING_OFFSET = 16.dp
+
 @Composable
 fun TimelineItemEventRow(
     event: TimelineItem.Event,
@@ -277,6 +280,7 @@ private fun TimelineItemEventRowContent(
             sender,
             message,
             reactions,
+            pinIcon,
         ) = createRefs()
 
         // Sender
@@ -311,7 +315,12 @@ private fun TimelineItemEventRowContent(
             modifier = Modifier
                 .constrainAs(message) {
                     top.linkTo(sender.bottom, margin = NEGATIVE_MARGIN_FOR_BUBBLE)
-                    this.linkStartOrEnd(event)
+                    if (event.isMine) {
+                        end.linkTo(parent.end, margin = 16.dp)
+                    } else {
+                        val startMargin = if (timelineRoomInfo.isDm) 16.dp else 16.dp + BUBBLE_INCOMING_OFFSET
+                        start.linkTo(parent.start, margin = startMargin)
+                    }
                 },
             state = bubbleState,
             interactionSource = interactionSource,
@@ -327,6 +336,27 @@ private fun TimelineItemEventRowContent(
             )
         }
 
+        // Pin icon
+        val isEventPinned = timelineRoomInfo.pinnedEventIds.contains(event.eventId)
+        if (isEventPinned) {
+            Icon(
+                imageVector = CompoundIcons.PinSolid(),
+                contentDescription = stringResource(CommonStrings.common_pinned),
+                tint = ElementTheme.colors.iconTertiary,
+                modifier = Modifier
+                    .padding(1.dp)
+                    .size(16.dp)
+                    .constrainAs(pinIcon) {
+                        top.linkTo(message.top)
+                        if (event.isMine) {
+                            end.linkTo(message.start, margin = 8.dp)
+                        } else {
+                            start.linkTo(message.end, margin = 8.dp)
+                        }
+                    }
+            )
+        }
+
         // Reactions
         if (event.reactionsState.reactions.isNotEmpty()) {
             TimelineItemReactionsView(