[Compose Notifs] Make PrioritizedRow handle same importance (79531d99) · Commits · e / os / android_frameworks_base

packages/SystemUI/pods/src/com/android/systemui/notifications/ui/composable/component/PrioritizedRow.kt

+99 −35

Original line number	Diff line number	Diff line
		@@ -136,6 +136,10 @@ public fun PrioritizedRow(
		init {
		check(hideWidth <= reducedWidth) { "hideWidth must be smaller than reducedWidth" }
		}

		fun shrinkable(): Boolean = !isSeparator && (reducedWidth < currentWidth)

		fun hideable(): Boolean = canHide && isVisible && (hideWidth < currentWidth)
		}

		fun List<LayoutCandidate>.previousVisibleChild(index: Int): LayoutCandidate? {
		@@ -199,33 +203,89 @@ public fun PrioritizedRow(

		// SHRINK: The content doesn't fit, start shrinking elements down to their reduced width
		// based on priority
		for (i in sortedContent.indices) {
		val shrinkCandidate = sortedContent[i]
		var i = 0
		while (i < sortedContent.size) {
		if (!sortedContent[i].shrinkable()) {
		i++
		continue
		}

		// Take all candidates with the same importance, and shrink them simultaneously
		val importance = sortedContent[i].importance
		var shrinkableCnt = 1
		var lastShrinkableIdx = i
		for (j in i + 1 until sortedContent.size) {
		if (sortedContent[j].importance != importance) break
		if (sortedContent[j].shrinkable()) {
		lastShrinkableIdx = j
		shrinkableCnt++
		}
		}

		var remainingShrinkables = shrinkableCnt
		for (j in i..lastShrinkableIdx) {
		val shrinkCandidate = sortedContent[j]
		if (!shrinkCandidate.shrinkable()) continue

		// Distribute the space needed across all remaining candidates
		val wantedSpace =
		(overflow / remainingShrinkables) +
		minOf(1, overflow % remainingShrinkables)
		remainingShrinkables--

		// TODO: b/431222735 - Shrink elements with the same importance simultaneously.
		val shrinkableSpace = shrinkCandidate.currentWidth - shrinkCandidate.reducedWidth
		if (shrinkableSpace <= 0) continue
		val shrinkAmount = minOf(overflow, shrinkableSpace)
		val shrinkableSpace =
		shrinkCandidate.currentWidth - shrinkCandidate.reducedWidth
		val shrinkAmount = minOf(wantedSpace, shrinkableSpace, overflow)
		shrinkCandidate.currentWidth -= shrinkAmount

		overflow -= shrinkAmount
		}

		if (overflow <= 0) break
		i = lastShrinkableIdx + 1
		}

		// HIDE: Content still doesn't fit, so we need to shrink elements further, and maybe
		// even hide them.
		var somethingWasHidden = false
		if (overflow > 0) {
		for (i in sortedContent.indices) {
		val hideCandidate = sortedContent[i]
		if (!hideCandidate.canHide \|\| !hideCandidate.isVisible) continue
		i = 0
		while (i < sortedContent.size) {
		if (!sortedContent[i].hideable()) {
		i++
		continue
		}

		// Take all hideable candidates with the same importance, and try to shrink them
		// proportionally before hiding them
		val importance = sortedContent[i].importance
		var hideableCnt = 1
		var lastHideableIdx = i
		for (j in i + 1 until sortedContent.size) {
		if (sortedContent[j].importance != importance) break
		if (sortedContent[j].hideable()) {
		lastHideableIdx = j
		hideableCnt++
		}
		}

		var remainingHideables = hideableCnt
		for (j in i..lastHideableIdx) {
		val hideCandidate = sortedContent[j]
		if (!hideCandidate.hideable()) continue

		// Distribute the space needed across all remaining candidates
		val wantedSpace =
		(overflow / remainingHideables) +
		minOf(1, overflow % remainingHideables)
		remainingHideables--

		// One last attempt to shrink this element further
		val shrinkableSpace = hideCandidate.currentWidth - hideCandidate.hideWidth
		if (shrinkableSpace >= overflow) {
		hideCandidate.currentWidth -= overflow
		overflow = 0
		break
		if (shrinkableSpace >= wantedSpace) {
		hideCandidate.currentWidth -= wantedSpace
		overflow -= wantedSpace
		continue
		}

		// Shrinking wouldn't be enough, so let's hide it
		@@ -250,6 +310,10 @@ public fun PrioritizedRow(
		overflow -= spaceToReclaim
		if (overflow <= 0) break
		}

		if (overflow <= 0) break
		i = lastHideableIdx + 1
		}
		}

		// REGROW: If hiding items created extra space, give it back to visible shrunk items.

packages/SystemUI/pods/src/com/android/systemui/notifications/ui/composable/component/Text.kt

+2 −2

Original line number	Diff line number	Diff line
		@@ -90,7 +90,7 @@ internal fun TopLineText(

		if (title != null) {
		isFirstElement = false
		Title(title, Modifier.shrinkable(importance = 5, minWidth = reducedWidth))
		Title(title, Modifier.shrinkable(importance = 3, minWidth = reducedWidth))
		}
		if (appNameText != null) {
		maybeAddSeparator()
		@@ -105,7 +105,7 @@ internal fun TopLineText(
		text = headerTextSecondary,
		modifier =
		Modifier.hideable(
		importance = 4,
		importance = 3,
		reducedWidth = reducedWidth,
		hideWidth = hideWidth,
		),

packages/SystemUI/tests/src/com/android/systemui/notifications/ui/composable/component/PrioritizedRowTest.kt

+48 −39

Original line number	Diff line number	Diff line
		@@ -95,6 +95,36 @@ class PrioritizedRowTest : SysuiTestCase() {
		rule.onNodeWithTag("row").assertWidthIsEqualTo(420.dp)
		}

		@Test
		fun width320dp_sameImportance_allShrinkablesShrink() {
		rule.setContent {
		CompositionLocalProvider(LocalDensity provides density) {
		PlatformTheme {
		PrioritizedRow(modifier = Modifier.width(320.dp).testTag("row")) {
		// All children have the same importance (everything else stays the same)
		TestContent(forceSameImportance = true)
		}
		}
		}
		}

		rule.onNodeWithTag("icon0").assertIsDisplayedWithWidth(iconWidth)
		rule.onNodeWithTag("spacer0").assertIsDisplayedWithWidth(separatorWidth)
		rule.onNodeWithTag("icon1").assertIsDisplayedWithWidth(iconWidth)
		rule.onNodeWithTag("spacer1").assertIsDisplayedWithWidth(separatorWidth)
		// The required space is distributed across all 3 shrinkables, but they can't go below
		// reducedWidth.
		rule.onNodeWithText("High Importance").assertIsDisplayedWithWidth(reducedWidth)
		rule.onNodeWithTag("dot0").assertIsDisplayedWithWidth(separatorWidth)
		rule.onNodeWithText("Medium (Shrinkable)").assertIsDisplayedWithWidth(57.5.dp)
		rule.onNodeWithTag("dot1").assertIsDisplayedWithWidth(separatorWidth)
		rule.onNodeWithTag("Low (Hideable)").assertIsDisplayedWithWidth(64.5.dp)
		rule.onNodeWithTag("spacer2").assertIsDisplayedWithWidth(separatorWidth)
		rule.onNodeWithText("FIXED").assertIsDisplayedWithWidth(fixedWidth)

		rule.onNodeWithTag("row").assertWidthIsEqualTo(320.dp)
		}

		@Test
		fun width400dp_lowPriorityRowShrinks() {
		rule.setContent {
		@@ -183,21 +213,21 @@ class PrioritizedRowTest : SysuiTestCase() {
		}

		@Test
		fun width290dp_firstIconShrinks() {
		fun width280dp_startIconsShrink() {
		rule.setContent {
		CompositionLocalProvider(LocalDensity provides density) {
		PlatformTheme {
		PrioritizedRow(modifier = Modifier.width(290.dp).testTag("row")) {
		PrioritizedRow(modifier = Modifier.width(280.dp).testTag("row")) {
		TestContent()
		}
		}
		}
		}

		// First icon starts shrinking before being hidden
		rule.onNodeWithTag("icon0").assertIsDisplayedWithWidth(16.dp)
		// Start icons have the same importance, so they both start shrinking
		rule.onNodeWithTag("icon0").assertIsDisplayedWithWidth(15.dp)
		rule.onNodeWithTag("spacer0").assertIsDisplayedWithWidth(separatorWidth)
		rule.onNodeWithTag("icon1").assertIsDisplayedWithWidth(iconWidth)
		rule.onNodeWithTag("icon1").assertIsDisplayedWithWidth(15.dp)
		rule.onNodeWithTag("spacer1").assertIsDisplayedWithWidth(separatorWidth)
		// High priority text doesn't shrink beyond reducedWidth
		rule.onNodeWithText("High Importance").assertIsDisplayedWithWidth(reducedWidth)
		@@ -209,36 +239,7 @@ class PrioritizedRowTest : SysuiTestCase() {
		rule.onNodeWithTag("spacer2").assertIsDisplayedWithWidth(separatorWidth)
		rule.onNodeWithText("FIXED").assertIsDisplayedWithWidth(fixedWidth)

		rule.onNodeWithTag("row").assertWidthIsEqualTo(290.dp)
		}

		@Test
		fun width240dp_firstIconHides() {
		rule.setContent {
		CompositionLocalProvider(LocalDensity provides density) {
		PlatformTheme {
		PrioritizedRow(modifier = Modifier.width(240.dp).testTag("row")) {
		TestContent()
		}
		}
		}
		}

		// First icon and corresponding spacer disappear
		rule.onNodeWithTag("icon0").assertIsNotDisplayed()
		rule.onNodeWithTag("spacer0").assertIsNotDisplayed()
		// Second icon starts shrinking
		rule.onNodeWithTag("icon1").assertIsDisplayedWithWidth(5.dp)
		rule.onNodeWithTag("spacer1").assertIsDisplayedWithWidth(separatorWidth)
		rule.onNodeWithText("High Importance").assertIsDisplayedWithWidth(reducedWidth)
		rule.onNodeWithTag("dot0").assertIsDisplayedWithWidth(separatorWidth)
		rule.onNodeWithText("Medium (Shrinkable)").assertIsDisplayedWithWidth(reducedWidth)
		rule.onNodeWithTag("dot1").assertIsDisplayedWithWidth(separatorWidth)
		rule.onNodeWithTag("Low (Hideable)").assertIsDisplayedWithWidth(reducedWidth)
		rule.onNodeWithTag("spacer2").assertIsDisplayedWithWidth(separatorWidth)
		rule.onNodeWithText("FIXED").assertIsDisplayedWithWidth(fixedWidth)

		rule.onNodeWithTag("row").assertWidthIsEqualTo(240.dp)
		rule.onNodeWithTag("row").assertWidthIsEqualTo(280.dp)
		}

		@Test
		@@ -329,7 +330,7 @@ class PrioritizedRowTest : SysuiTestCase() {

		// Note: This composable is forked in the Compose Gallery app for interactive, manual testing.
		@Composable
		private fun PrioritizedRowScope.TestContent() {
		private fun PrioritizedRowScope.TestContent(forceSameImportance: Boolean = false) {
		// Note: This font family & size (together with the fixed density configuration) means that
		// each character in a text composable will have a width of 5dp.
		val fontFamily = FontFamily.Monospace
		@@ -355,7 +356,11 @@ class PrioritizedRowTest : SysuiTestCase() {
		// This text will be the last to shrink
		Text(
		text = "High Importance",
		modifier = Modifier.shrinkable(importance = 3, minWidth = reducedWidth),
		modifier =
		Modifier.shrinkable(
		importance = if (forceSameImportance) 0 else 3,
		minWidth = reducedWidth,
		),
		maxLines = 1,
		overflow = TextOverflow.Ellipsis,
		fontFamily = fontFamily,
		@@ -371,7 +376,11 @@ class PrioritizedRowTest : SysuiTestCase() {
		// This text will shrink to its minWidth
		Text(
		text = "Medium (Shrinkable)",
		modifier = Modifier.shrinkable(importance = 2, minWidth = reducedWidth),
		modifier =
		Modifier.shrinkable(
		importance = if (forceSameImportance) 0 else 2,
		minWidth = reducedWidth,
		),
		maxLines = 1,
		overflow = TextOverflow.Ellipsis,
		fontFamily = fontFamily,
		@@ -388,7 +397,7 @@ class PrioritizedRowTest : SysuiTestCase() {
		Row(
		modifier =
		Modifier.hideable(
		importance = 1,
		importance = if (forceSameImportance) 0 else 1,
		reducedWidth = reducedWidth,
		hideWidth = hideWidth,
		)