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-rw-r--r--layout/generic/ReflowInput.cpp1
-rw-r--r--layout/generic/nsBlockFrame.cpp7
-rw-r--r--layout/generic/nsFrameStateBits.h3
-rw-r--r--layout/generic/nsHTMLParts.h3
4 files changed, 9 insertions, 5 deletions
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 | \