Apply gradient to focused Event.

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

@@ -37,11 +37,11 @@ import io.element.android.features.messages.impl.timeline.model.event.TimelineIt
 import io.element.android.features.messages.impl.timeline.model.event.TimelineItemVoiceContent
 import io.element.android.features.messages.impl.timeline.protection.TimelineProtectionEvent
 import io.element.android.features.messages.impl.timeline.protection.TimelineProtectionState
+import io.element.android.libraries.designsystem.modifiers.subtleColorStops
 import io.element.android.libraries.designsystem.preview.ElementPreview
 import io.element.android.libraries.designsystem.preview.PreviewsDayNight
 import io.element.android.libraries.designsystem.text.toPx
 import io.element.android.libraries.designsystem.theme.LocalBuildMeta
-import io.element.android.libraries.designsystem.theme.highlightedMessageBackgroundColor
 import io.element.android.libraries.matrix.api.core.EventId
 import io.element.android.libraries.matrix.api.user.MatrixUser
 import io.element.android.libraries.ui.strings.CommonStrings
@@ -206,23 +206,20 @@ internal fun TimelineItemRow(
 @Suppress("ModifierComposable")
 @Composable
 private fun Modifier.focusedEvent(
-    focusedEventOffset: Dp
+    focusedEventOffset: Dp,
+    isEnterpriseBuild: Boolean = LocalBuildMeta.current.isEnterpriseBuild,
 ): Modifier {
-    val highlightedLineColor = ElementTheme.colors.textActionAccent
-    val gradientFirstColor = if (LocalBuildMeta.current.isEnterpriseBuild) {
-        ElementTheme.colors.textActionAccent.copy(alpha = 0.125f)
+    val highlightedLineColor = if (isEnterpriseBuild) {
+        ElementTheme.colors.textActionAccent
     } else {
-        ElementTheme.colors.highlightedMessageBackgroundColor
+        ElementTheme.colors.borderAccentSubtle
     }
-    val gradientColors = listOf(
-        gradientFirstColor,
-        ElementTheme.colors.bgCanvasDefault,
-    )
+    val gradientColors = subtleColorStops(isEnterpriseBuild)
     val verticalOffset = focusedEventOffset.toPx()
     val verticalRatio = 0.7f
     return drawWithCache {
         val brush = Brush.verticalGradient(
-            colors = gradientColors,
+            colorStops = gradientColors,
             endY = size.height * verticalRatio,
         )
         onDrawBehind {
@@ -251,3 +248,18 @@ internal fun FocusedEventPreview() = ElementPreview {
             .focusedEvent(0.dp),
     )
 }
+
+@PreviewsDayNight
+@Composable
+internal fun FocusedEventEnterprisePreview() = ElementPreview {
+    Box(
+        modifier = Modifier
+            .padding(16.dp)
+            .fillMaxWidth()
+            .height(160.dp)
+            .focusedEvent(
+                focusedEventOffset = 0.dp,
+                isEnterpriseBuild = true,
+            ),
+    )
+}

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/modifiers/Gradient.kt

@@ -34,26 +34,33 @@ fun Modifier.backgroundVerticalGradient(
     if (!isVisible) return this
     return background(
         brush = Brush.verticalGradient(
-            colorStops = buildList {
-                if (isEnterpriseBuild) {
-                    // For enterprise builds, ensure that we are theming the gradient
-                    add(0f to ElementTheme.colors.textActionAccent.copy(alpha = 0.5f))
-                    add(0.75f to ElementTheme.colors.bgCanvasDefault)
-                    add(1f to Color.Transparent)
-                } else {
-                    add(0f to ElementTheme.colors.gradientSubtleStop1)
-                    add(1 / 5f to ElementTheme.colors.gradientSubtleStop2)
-                    add(2 / 5f to ElementTheme.colors.gradientSubtleStop3)
-                    add(3 / 5f to ElementTheme.colors.gradientSubtleStop4)
-                    add(4 / 5f to ElementTheme.colors.gradientSubtleStop5)
-                    add(1f to ElementTheme.colors.gradientSubtleStop6)
-                }
-            }.toTypedArray(),
+            colorStops = subtleColorStops(isEnterpriseBuild),
         ),
         alpha = 0.75f,
     )
 }
 
+@Composable
+fun subtleColorStops(
+    isEnterpriseBuild: Boolean = LocalBuildMeta.current.isEnterpriseBuild,
+): Array<Pair<Float, Color>> {
+    return buildList {
+        if (isEnterpriseBuild) {
+            // For enterprise builds, ensure that we are theming the gradient
+            add(0f to ElementTheme.colors.textActionAccent.copy(alpha = 0.5f))
+            add(0.75f to ElementTheme.colors.bgCanvasDefault)
+            add(1f to Color.Transparent)
+        } else {
+            add(0f to ElementTheme.colors.gradientSubtleStop1)
+            add(1 / 5f to ElementTheme.colors.gradientSubtleStop2)
+            add(2 / 5f to ElementTheme.colors.gradientSubtleStop3)
+            add(3 / 5f to ElementTheme.colors.gradientSubtleStop4)
+            add(4 / 5f to ElementTheme.colors.gradientSubtleStop5)
+            add(1f to ElementTheme.colors.gradientSubtleStop6)
+        }
+    }.toTypedArray()
+}
+
 @PreviewsDayNight
 @Composable
 internal fun BackgroundVerticalGradientPreview() = ElementPreview {

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/theme/ColorAliases.kt

@@ -100,10 +100,6 @@ val SemanticColors.mentionPillBackground
 val SemanticColors.bigCheckmarkBorderColor
     get() = if (isLight) LightColorTokens.colorGray400 else DarkColorTokens.colorGray400
 
-@OptIn(CoreColorToken::class)
-val SemanticColors.highlightedMessageBackgroundColor
-    get() = if (isLight) LightColorTokens.colorGreen300 else DarkColorTokens.colorGreen300
-
 // Badge colors
 
 @OptIn(CoreColorToken::class)
@@ -148,7 +144,6 @@ internal fun ColorAliasesPreview() = ElementPreview {
             "temporaryColorBgSpecial" to ElementTheme.colors.temporaryColorBgSpecial,
             "iconSuccessPrimaryBackground" to ElementTheme.colors.iconSuccessPrimaryBackground,
             "bigCheckmarkBorderColor" to ElementTheme.colors.bigCheckmarkBorderColor,
-            "highlightedMessageBackgroundColor" to ElementTheme.colors.highlightedMessageBackgroundColor,
         )
     )
 }

tests/konsist/src/test/kotlin/io/element/android/tests/konsist/KonsistPreviewTest.kt

@@ -64,6 +64,7 @@ class KonsistPreviewTest {
         "ColorAliasesPreview",
         "DefaultRoomListTopBarWithIndicatorPreview",
         "FocusedEventPreview",
+        "FocusedEventEnterprisePreview",
         "GradientFloatingActionButtonCircleShapePreview",
         "HeaderFooterPageScrollablePreview",
         "IconsCompoundPreview",