Fix nested float propagation in rich text layout

Propagate descendant float exclusions through non-BFC HTML containers so
floats participate in their nearest block formatting context.

Finalize line geometry before translating propagated exclusions, track
finalized lines incrementally, and search successive float bands when a
fixed-width inline-block does not fit beside active floats.

Recognize inline-block elements as block formatting contexts while
preserving their fixed width. Reuse persistent float-exclusion storage
across relayouts to avoid repeated allocations.

Add SS64 regressions covering narrow viewports, HiDPI rendering, stacked
floats, anchor sizing, SVG sizing, and footer overlap.

Fixed `cursor: pointer`, `pointer` was not registered.

src/eepp/graphics/richtext.cpp

@@ -737,7 +737,7 @@ class RichTextInlineLayouter {
 		for ( const auto& run : buildLayoutRuns( inlineItems ) ) {
 			const auto& payload = run.payload;
 			if ( payload.type != RichText::RenderSpan::Type::Text ) {
-				if ( payload.floatType != RichText::InlineFloat::None ||
+				if ( payload.floatType != RichText::InlineFloat::None || payload.propagatedFloats ||
 					 payload.clearType != RichText::InlineClear::None )
 					return true;
 			}
@@ -1053,6 +1053,7 @@ class RichTextInlineLayouter {
 					  Float textIndent, Uint32 align, Float forcedLineHeight,
 					  const FontStyleConfig& defaultStyle,
 					  const std::vector<RichText::FloatExclusion>& externalFloatExclusions,
+					  std::vector<RichText::FloatExclusion>& localFloatExclusions,
 					  bool lineWrap, RichText::WhiteSpaceWrapMode whiteSpaceWrapMode ) {
 		LayoutResult result;
 		result.lines.push_back( RichText::RenderParagraph() );
@@ -1134,6 +1135,27 @@ class RichTextInlineLayouter {
 			return advanced;
 		};
 
+		size_t finalizedLineCount = 0;
+		Float finalizedLinesBottom = 0.f;
+		// Propagated float groups need final line metrics before translating their exclusions.
+		// Keep a monotonic cursor so each preceding line is finalized at most once here.
+		auto finalizeLinesThrough = [&]( size_t end ) {
+			for ( ; finalizedLineCount < end; ++finalizedLineCount ) {
+				auto& line = result.lines[finalizedLineCount];
+				alignLineSpans( line, 0.f, defaultStyle, forcedLineHeight, true, inlineItems );
+				finalizedLinesBottom =
+					eemax( finalizedLinesBottom, line.y + line.height );
+			}
+		};
+
+		auto advanceInFlowLine = [&]() {
+			finalizeLinesThrough( result.lines.size() );
+			curY = eemax( curY, finalizedLinesBottom );
+			result.lines.push_back( RichText::RenderParagraph() );
+			result.lines.back().y = curY;
+			curX = 0;
+		};
+
 		for ( const auto& run : runs ) {
 			const auto& payload = run.payload;
 			if ( payload.type == RichText::RenderSpan::Type::Text ) {
@@ -1189,8 +1211,7 @@ class RichTextInlineLayouter {
 													   inlineEndSpacing( payload, inlineItems ) );
 						if ( lineWrap && effW > 0 && effW < 1e9f && curX > effW ) {
 							maxWidth = std::max( maxWidth, curX );
-							result.lines.push_back( RichText::RenderParagraph() );
-							curX = 0;
+							advanceInFlowLine();
 							continue;
 						}
 					}
@@ -1209,8 +1230,7 @@ class RichTextInlineLayouter {
 						}
 						if ( !trailingNewlineAlreadyAdvanced ) {
 							maxWidth = std::max( maxWidth, curX );
-							result.lines.push_back( RichText::RenderParagraph() );
-							curX = 0;
+							advanceInFlowLine();
 						}
 					}
 				}
@@ -1313,7 +1333,8 @@ class RichTextInlineLayouter {
 						Float re = floatRightEdge( curY );
 						Float availableWidth = re - le;
 						if ( availableWidth > 0 && availableWidth < 1e9f ) {
-							if ( metrics.size.getWidth() > availableWidth + 0.01f )
+							if ( metrics.isBlock &&
+								 metrics.size.getWidth() > availableWidth + 0.01f )
 								metrics.size.setWidth( availableWidth );
 							curX = le;
 							effW = availableWidth;
@@ -1322,16 +1343,24 @@ class RichTextInlineLayouter {
 
 					if ( lineWrap && !metrics.isBlock && effW > 0 && effW < 1e9f &&
 						 metrics.size.getWidth() > effW + 0.01f ) {
-						Float maxBottom = activeFloatBottom( curY );
-						if ( maxBottom > curY ) {
+						Float placedY = curY;
+						Float placedWidth = effW;
+						while ( metrics.size.getWidth() > placedWidth + 0.01f ) {
+							Float nextY = activeFloatBottom( placedY );
+							if ( nextY <= placedY )
+								break;
+							placedY = nextY;
+							placedWidth = effectiveMaxWidthAt( placedY );
+						}
+						if ( placedY > curY ) {
 							maxWidth = std::max( maxWidth, curX );
 							if ( !result.lines.back().spans.empty() )
 								result.lines.push_back( RichText::RenderParagraph() );
 							curX = 0;
-							curY = maxBottom;
+							curY = placedY;
 							result.lines.back().y = curY;
 							le = floatLeftEdge( curY );
-							effW = effectiveMaxWidthAt( curY );
+							effW = placedWidth;
 						}
 					}
 
@@ -1339,20 +1368,60 @@ class RichTextInlineLayouter {
 						 ( curX + metrics.size.getWidth() >= effW || curX >= effW ) && curX > 0 &&
 						 hadLineContentBeforeSpacing ) {
 						maxWidth = std::max( maxWidth, curX );
-						result.lines.push_back( RichText::RenderParagraph() );
-						curX = 0;
+						advanceInFlowLine();
 						if ( hadLineContentBeforeSpacing )
 							addInlineSpacingToCurrentLine( result, curX, startSpacing );
 					}
 
+					if ( payload.propagatedFloats ) {
+						finalizeLinesThrough( result.lines.size() - 1 );
+						if ( finalizedLinesBottom > curY ) {
+							curY = finalizedLinesBottom;
+							result.lines.back().y = curY;
+						}
+						Float placedY = curY;
+						bool moved;
+						do {
+							moved = false;
+							for ( const auto& propagated : *payload.propagatedFloats ) {
+								Rectf rect = propagated.rect;
+								rect.move( { curX, placedY } );
+								auto avoidActiveFloat = [&]( const Rectf& active ) {
+									if ( rect.intersect( active ) && active.Bottom > placedY ) {
+										placedY += active.Bottom - rect.Top;
+										moved = true;
+									}
+								};
+								for ( const auto& active : leftFloats )
+									avoidActiveFloat( active );
+								for ( const auto& active : rightFloats )
+									avoidActiveFloat( active );
+							}
+						} while ( moved );
+						if ( placedY > curY ) {
+							curY = placedY;
+							result.lines.back().y = curY;
+						}
+					}
+
 					appendAtomicRenderSpan( result.lines.back(), payload, metrics, curX,
 											curCharIdx );
+					if ( payload.propagatedFloats ) {
+						const Vector2f atomicPosition = result.lines.back().spans.back().position;
+						for ( const auto& propagated : *payload.propagatedFloats ) {
+							Rectf rect = propagated.rect;
+							rect.move( { atomicPosition.x, curY } );
+							if ( propagated.type == RichText::InlineFloat::Left )
+								leftFloats.push_back( rect );
+							else if ( propagated.type == RichText::InlineFloat::Right )
+								rightFloats.push_back( rect );
+						}
+					}
 					addInlineSpacingToCurrentLine( result, curX, endSpacing );
 
 					if ( lineWrap && effW > 0 && effW < 1e9f && curX >= effW ) {
 						maxWidth = std::max( maxWidth, curX );
-						result.lines.push_back( RichText::RenderParagraph() );
-						curX = 0;
+						advanceInFlowLine();
 					}
 				}
 			}
@@ -1386,6 +1455,16 @@ class RichTextInlineLayouter {
 			floatBoundsBottom = std::max( floatBoundsBottom, rightFloats[i].Bottom );
 			floatBoundsRight = std::max( floatBoundsRight, rightFloats[i].Right );
 		}
+		// This is persistent RichText storage: clear without discarding capacity so repeated
+		// viewport-driven layouts do not allocate a fresh exclusion vector every time.
+		localFloatExclusions.clear();
+		localFloatExclusions.reserve( leftFloats.size() + rightFloats.size() -
+									  externalLeftFloatCount - externalRightFloatCount );
+		for ( size_t i = externalLeftFloatCount; i < leftFloats.size(); ++i )
+			localFloatExclusions.push_back( { leftFloats[i], RichText::InlineFloat::Left } );
+		for ( size_t i = externalRightFloatCount; i < rightFloats.size(); ++i )
+			localFloatExclusions.push_back(
+				{ rightFloats[i], RichText::InlineFloat::Right } );
 
 		result.size =
 			Sizef( std::max( maxWidth, floatBoundsRight ), std::max( accumY, floatBoundsBottom ) );
@@ -1638,6 +1717,7 @@ class RichTextInlineLayouter {
 		run.payload.isLineBreak = box.isLineBreak;
 		run.payload.isBlock = box.isBlock;
 		run.payload.isBlockFormattingContext = box.isBlockFormattingContext;
+		run.payload.propagatedFloats = box.propagatedFloats;
 		run.payload.baselineAlign = box.baselineAlign;
 		run.payload.inlinePath = path;
 		run.payload._leafIndex = nextLeafIndex++;
@@ -2116,9 +2196,11 @@ void RichText::addDrawable( std::shared_ptr<Drawable> drawable ) {
 	invalidateLayout();
 }
 
-void RichText::addCustomSize( const Sizef& size, InlineFloat floatType, InlineClear clearType,
-							  Float baseline, const BaselineAlignValue& baselineAlign,
-							  InlineSource source, bool isBlock, bool isBlockFormattingContext ) {
+void RichText::addCustomSize(
+	const Sizef& size, InlineFloat floatType, InlineClear clearType, Float baseline,
+	const BaselineAlignValue& baselineAlign, InlineSource source, bool isBlock,
+	bool isBlockFormattingContext,
+	std::shared_ptr<const std::vector<FloatExclusion>> propagatedFloats ) {
 	Float usedBaseline = baseline >= 0.f ? baseline : size.getHeight();
 
 	InlineItem item;
@@ -2130,6 +2212,7 @@ void RichText::addCustomSize( const Sizef& size, InlineFloat floatType, InlineCl
 	box.clearType = clearType;
 	box.isBlock = isBlock;
 	box.isBlockFormattingContext = isBlockFormattingContext;
+	box.propagatedFloats = std::move( propagatedFloats );
 	box.baselineAlign = baselineAlign;
 	item.data = std::move( box );
 	resolveInlinePath( mInlineItems, mInlinePath )->push_back( std::move( item ) );
@@ -2359,6 +2442,7 @@ void RichText::updateLayout() {
 															  mAlign, mLineHeight, mDefaultStyle,
 															  mLineWrap, mWhiteSpaceWrapMode );
 		mLines = std::move( result.lines );
+		mLocalFloatExclusions.clear();
 		mSize = result.size;
 		mTotalCharacterCount = result.totalCharacterCount;
 		rebuildInlineFragments();
@@ -2368,7 +2452,7 @@ void RichText::updateLayout() {
 
 	auto result = RichTextInlineLayouter::layoutWithFloats(
 		mInlineItems, mMaxWidth, mTextIndent, mAlign, mLineHeight, mDefaultStyle,
-		mExternalFloatExclusions, mLineWrap, mWhiteSpaceWrapMode );
+		mExternalFloatExclusions, mLocalFloatExclusions, mLineWrap, mWhiteSpaceWrapMode );
 	mLines = std::move( result.lines );
 	mSize = result.size;
 	mTotalCharacterCount = result.totalCharacterCount;
@@ -2376,6 +2460,11 @@ void RichText::updateLayout() {
 	mNeedsLayoutUpdate = false;
 }
 
+const std::vector<RichText::FloatExclusion>& RichText::getLocalFloatExclusions() {
+	updateLayout();
+	return mLocalFloatExclusions;
+}
+
 Sizef RichText::getSize() {
 	updateLayout();
 	return mSize;

src/eepp/ui/uirichtext.cpp

@@ -2116,7 +2116,7 @@ void UIRichText::rebuildRichText( UILayout* container, RichText& richText, Intri
 				bool isFloating = floatType != CSSFloat::None;
 				bool isNormalFlowBlock = isBlock && !isFloating;
 				bool isBlockFormattingContext =
-					isNormalFlowBlock && widget->isType( UI_TYPE_HTML_WIDGET ) &&
+					!isFloating && widget->isType( UI_TYPE_HTML_WIDGET ) &&
 					widget->asType<UIHTMLWidget>()->establishesBlockFormattingContext();
 				bool shrinkToFitFloat =
 					isFloating && widget->getLayoutWidthPolicy() == SizePolicy::MatchParent;
@@ -2145,11 +2145,30 @@ void UIRichText::rebuildRichText( UILayout* container, RichText& richText, Intri
 
 				Sizef customSize( w + margin.Left + margin.Right,
 								  size.getHeight() + margin.Top + margin.Bottom );
-				richText.addCustomSize(
-					customSize, toRichTextFloat( floatType ), toRichTextClear( clearType ),
-					getAtomicInlineBoxBaseline( widget, size, margin ),
-					toRichTextBaselineAlign( getWidgetBaselineAlign( widget ) ),
-					toRichTextWidgetSource( widget ), isNormalFlowBlock, isBlockFormattingContext );
+				std::shared_ptr<std::vector<RichText::FloatExclusion>> propagatedFloats;
+				if ( widget->isType( UI_TYPE_HTML_WIDGET ) ) {
+					auto* htmlWidget = widget->asType<UIHTMLWidget>();
+					if ( !htmlWidget->establishesBlockFormattingContext() &&
+						 htmlWidget->getRichTextPtr() ) {
+						const auto& localFloats =
+							htmlWidget->getRichTextPtr()->getLocalFloatExclusions();
+						if ( !localFloats.empty() ) {
+							propagatedFloats =
+								std::make_shared<std::vector<RichText::FloatExclusion>>(
+									localFloats );
+							const Rectf contentOffset = widget->getPixelsContentOffset();
+							for ( auto& exclusion : *propagatedFloats )
+								exclusion.rect.move( { margin.Left + contentOffset.Left,
+													   margin.Top + contentOffset.Top } );
+						}
+					}
+				}
+				richText.addCustomSize( customSize, toRichTextFloat( floatType ),
+										toRichTextClear( clearType ),
+										getAtomicInlineBoxBaseline( widget, size, margin ),
+										toRichTextBaselineAlign( getWidgetBaselineAlign( widget ) ),
+										toRichTextWidgetSource( widget ), isNormalFlowBlock,
+										isBlockFormattingContext, std::move( propagatedFloats ) );
 
 				if ( widget->isType( UI_TYPE_TEXTSPAN ) &&
 					 widget->asType<UITextSpan>()->isInlineBlock() &&

src/eepp/window/cursor.cpp

@@ -63,7 +63,7 @@ Cursor::Type Cursor::fromName( std::string name ) {
 	String::toLowerInPlace( name );
 	if ( "arrow" == name )
 		return Arrow;
-	if ( "hand" == name )
+	if ( "hand" == name || "pointer" == name )
 		return Hand;
 	if ( "ibream" == name )
 		return IBeam;

src/tests/unit_tests/uihtml_float_tests.cpp

@@ -618,14 +618,21 @@ UTEST( UIHTMLFloat, floatedListItemsShrinkToFitBlockAnchors ) {
 UTEST( UIHTMLFloat, ss64BlockAnchorsAndSvgAtPixelDensity2 ) {
 	init_float_test();
 	PixelDensity::setPixelDensity( 2.f );
+	Engine::instance()->getCurrentWindow()->setSize( 475, 900 );
 	UISceneNode* sceneNode = SceneManager::instance()->getUISceneNode();
 	std::string html;
 	ASSERT_TRUE( FileSystem::fileGet( "assets/html/ss64.html", html ) );
 	sceneNode->loadLayoutFromString( HTMLFormatter::HTMLtoXML( html ) );
 	sceneNode->updateDirtyLayouts();
+	SceneManager::instance()->update();
 
 	auto buttons = sceneNode->getRoot()->querySelectorAll( ".tbtn" );
 	auto anchors = sceneNode->getRoot()->querySelectorAll( ".tbtn a" );
+	auto worldRect = []( UIWidget* widget ) {
+		Vector2f position = widget->getPixelsPosition();
+		widget->nodeToWorldTranslation( position );
+		return Rectf( position, widget->getPixelsSize() );
+	};
 	ASSERT_EQ( buttons.size(), (size_t)8 );
 	ASSERT_EQ( anchors.size(), buttons.size() );
 	for ( size_t i = 0; i < buttons.size(); ++i ) {
@@ -634,6 +641,8 @@ UTEST( UIHTMLFloat, ss64BlockAnchorsAndSvgAtPixelDensity2 ) {
 		EXPECT_NEAR( anchor->getPixelsSize().getHeight(), 80.f, 1.f );
 		EXPECT_NEAR( anchor->getPixelsSize().getHeight() + 4.f,
 					 buttons[i]->getPixelsSize().getHeight(), 1.f );
+		for ( size_t j = 0; j < i; ++j )
+			EXPECT_FALSE( worldRect( buttons[i] ).intersect( worldRect( buttons[j] ) ) );
 	}
 	auto* svg = sceneNode->getRoot()->querySelector( "#sherlock svg" )->asType<UISvg>();
 	auto* input = sceneNode->getRoot()->querySelector( "#qu" );
@@ -656,10 +665,42 @@ UTEST( UIHTMLFloat, ss64BlockAnchorsAndSvgAtPixelDensity2 ) {
 				 1.f );
 	EXPECT_NEAR( svg->getDrawable()->getPixelsSize().getHeight(), svg->getPixelsSize().getHeight(),
 				 1.f );
+	auto* footer = sceneNode->getRoot()->querySelector( ".footer" )->asType<UIRichText>();
+	ASSERT_TRUE( footer != nullptr );
+	for ( auto* button : buttons ) {
+		EXPECT_FALSE( worldRect( footer ).intersect( worldRect( button ) ) );
+	}
 	Engine::destroySingleton();
 	PixelDensity::setPixelDensity( 1.f );
 }
 
+UTEST( UIHTMLFloat, ss64NarrowViewportFloatsDoNotOverlapAtPixelDensity1 ) {
+	init_float_test();
+	auto* window = Engine::instance()->getCurrentWindow();
+	ASSERT_TRUE( window != nullptr );
+	window->setSize( 400, 600 );
+	UISceneNode* sceneNode = SceneManager::instance()->getUISceneNode();
+	std::string html;
+	ASSERT_TRUE( FileSystem::fileGet( "assets/html/ss64.html", html ) );
+	sceneNode->loadLayoutFromString( HTMLFormatter::HTMLtoXML( html ) );
+	sceneNode->updateDirtyLayouts();
+	SceneManager::instance()->update();
+
+	auto buttons = sceneNode->getRoot()->querySelectorAll( ".tbtn" );
+	ASSERT_EQ( buttons.size(), (size_t)8 );
+	auto worldRect = []( UIWidget* widget ) {
+		Vector2f position = widget->getPixelsPosition();
+		widget->nodeToWorldTranslation( position );
+		return Rectf( position, widget->getPixelsSize() );
+	};
+	for ( size_t i = 0; i < buttons.size(); ++i ) {
+		for ( size_t j = 0; j < i; ++j )
+			EXPECT_FALSE( worldRect( buttons[i] ).intersect( worldRect( buttons[j] ) ) );
+	}
+
+	Engine::destroySingleton();
+}
+
 UTEST( UIHTMLFloat, autoHorizontalMarginsCenterBlockInsideFloat ) {
 	init_float_test();
 	UISceneNode* sceneNode = SceneManager::instance()->getUISceneNode();

src/tests/unit_tests/uiscenenode_tests.cpp

@@ -10,6 +10,7 @@
 #include <eepp/ui/uiscenenode.hpp>
 #include <eepp/ui/uithememanager.hpp>
 #include <eepp/ui/uiwidget.hpp>
+#include <eepp/window/cursor.hpp>
 #include <eepp/window/engine.hpp>
 #include <eepp/window/input.hpp>
 
@@ -19,6 +20,11 @@ using namespace EE::Window;
 using namespace EE::Scene;
 using namespace EE::UI;
 
+UTEST( UISceneNode, CssPointerCursorUsesHandCursor ) {
+	EXPECT_EQ( Cursor::fromName( "pointer" ), Cursor::Hand );
+	EXPECT_EQ( Cursor::fromName( "POINTER" ), Cursor::Hand );
+}
+
 static UISceneNode* init_test_scene_node() {
 	FileSystem::changeWorkingDirectory( Sys::getProcessPath() );
 	FontTrueType* font = FontTrueType::New( "NotoSans-Regular" ).get();