From abaea77ccbc3658186b2027d2721451e8acb34a3 Mon Sep 17 00:00:00 2001 From: athenian200 Date: Thu, 3 Sep 2020 18:55:28 -0500 Subject: Issue #1641 - Implement CSS flow-root keyword This is just a clean port of 1322191 and follow-up 1325970. It really seems to add create a new way to access existing code relating to block formatting and floating elements rather than implementing new functionality, and it is mercifully straightforwards. --- layout/generic/ReflowInput.cpp | 1 + layout/generic/nsBlockFrame.cpp | 7 ++++--- layout/generic/nsFrameStateBits.h | 3 +++ layout/generic/nsHTMLParts.h | 3 +-- 4 files changed, 9 insertions(+), 5 deletions(-) (limited to 'layout/generic') diff --git a/layout/generic/ReflowInput.cpp b/layout/generic/ReflowInput.cpp index 78eca8c6c..e55b629e3 100644 --- a/layout/generic/ReflowInput.cpp +++ b/layout/generic/ReflowInput.cpp @@ -844,6 +844,7 @@ ReflowInput::InitFrameType(nsIAtom* aFrameType) case StyleDisplay::Flex: case StyleDisplay::WebkitBox: case StyleDisplay::Grid: + case StyleDisplay::FlowRoot: case StyleDisplay::RubyTextContainer: frameType = NS_CSS_FRAME_TYPE_BLOCK; break; diff --git a/layout/generic/nsBlockFrame.cpp b/layout/generic/nsBlockFrame.cpp index 57838207d..41437c8f8 100644 --- a/layout/generic/nsBlockFrame.cpp +++ b/layout/generic/nsBlockFrame.cpp @@ -305,7 +305,7 @@ NS_NewBlockFormattingContext(nsIPresShell* aPresShell, nsStyleContext* aStyleContext) { nsBlockFrame* blockFrame = NS_NewBlockFrame(aPresShell, aStyleContext); - blockFrame->AddStateBits(NS_BLOCK_FLOAT_MGR | NS_BLOCK_MARGIN_ROOT); + blockFrame->AddStateBits(NS_BLOCK_FORMATTING_CONTEXT_STATE_BITS); return blockFrame; } @@ -6896,10 +6896,11 @@ nsBlockFrame::Init(nsIContent* aContent, // (http://dev.w3.org/csswg/css-writing-modes/#block-flow) // If the box has contain: paint (or contain: strict), then it should also // establish a formatting context. - if ((GetParent() && StyleVisibility()->mWritingMode != + if (StyleDisplay()->mDisplay == mozilla::StyleDisplay::FlowRoot || + (GetParent() && StyleVisibility()->mWritingMode != GetParent()->StyleVisibility()->mWritingMode) || StyleDisplay()->IsContainPaint()) { - AddStateBits(NS_BLOCK_FLOAT_MGR | NS_BLOCK_MARGIN_ROOT); + AddStateBits(NS_BLOCK_FORMATTING_CONTEXT_STATE_BITS); } if ((GetStateBits() & diff --git a/layout/generic/nsFrameStateBits.h b/layout/generic/nsFrameStateBits.h index f8b1e541c..ba43e37d4 100644 --- a/layout/generic/nsFrameStateBits.h +++ b/layout/generic/nsFrameStateBits.h @@ -483,6 +483,9 @@ FRAME_STATE_BIT(Block, 22, NS_BLOCK_MARGIN_ROOT) // used to reserve space for the floated frames. FRAME_STATE_BIT(Block, 23, NS_BLOCK_FLOAT_MGR) +// For setting the relevant bits on a block formatting context: +#define NS_BLOCK_FORMATTING_CONTEXT_STATE_BITS (NS_BLOCK_FLOAT_MGR | NS_BLOCK_MARGIN_ROOT) + FRAME_STATE_BIT(Block, 24, NS_BLOCK_HAS_LINE_CURSOR) FRAME_STATE_BIT(Block, 25, NS_BLOCK_HAS_OVERFLOW_LINES) diff --git a/layout/generic/nsHTMLParts.h b/layout/generic/nsHTMLParts.h index 89a7a6edd..b11d49e08 100644 --- a/layout/generic/nsHTMLParts.h +++ b/layout/generic/nsHTMLParts.h @@ -27,8 +27,7 @@ class nsTableColFrame; // These are all the block specific frame bits, they are copied from // the prev-in-flow to a newly created next-in-flow, except for the // NS_BLOCK_FLAGS_NON_INHERITED_MASK bits below. -#define NS_BLOCK_FLAGS_MASK (NS_BLOCK_MARGIN_ROOT | \ - NS_BLOCK_FLOAT_MGR | \ +#define NS_BLOCK_FLAGS_MASK (NS_BLOCK_FORMATTING_CONTEXT_STATE_BITS | \ NS_BLOCK_CLIP_PAGINATED_OVERFLOW | \ NS_BLOCK_HAS_FIRST_LETTER_STYLE | \ NS_BLOCK_FRAME_HAS_OUTSIDE_BULLET | \ -- cgit v1.2.3