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Auto merge of #5480 - SimonSapin:multicol, r=pcwalton

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This add some properties to the style system and a new flow type, but the larger issues of dealing with fragmentation in the flow tree is still an open question.

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This commit is contained in:
bors-servo 2015-04-28 19:48:45 -05:00
commit 1e150140bd
15 changed files with 388 additions and 125 deletions
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34
components/layout/block.rs
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@ -562,33 +562,20 @@ impl Encodable for BlockFlowFlags {
}
impl BlockFlow {
pub fn from_node_and_fragment(node: &ThreadSafeLayoutNode, fragment: Fragment) -> BlockFlow {
pub fn from_node_and_fragment(node: &ThreadSafeLayoutNode,
fragment: Fragment,
float_kind: Option<FloatKind>)
-> BlockFlow {
let writing_mode = node.style().writing_mode;
BlockFlow {
base: BaseFlow::new(Some((*node).clone()),
writing_mode,
ForceNonfloatedFlag::ForceNonfloated),
base: BaseFlow::new(Some((*node).clone()), writing_mode, match float_kind {
Some(_) => ForceNonfloatedFlag::FloatIfNecessary,
None => ForceNonfloatedFlag::ForceNonfloated,
}),
fragment: fragment,
inline_size_of_preceding_left_floats: Au(0),
inline_size_of_preceding_right_floats: Au(0),
float: None,
flags: BlockFlowFlags::empty(),
}
}
pub fn float_from_node_and_fragment(node: &ThreadSafeLayoutNode,
fragment: Fragment,
float_kind: FloatKind)
-> BlockFlow {
let writing_mode = node.style().writing_mode;
BlockFlow {
base: BaseFlow::new(Some((*node).clone()),
writing_mode,
ForceNonfloatedFlag::FloatIfNecessary),
fragment: fragment,
inline_size_of_preceding_left_floats: Au(0),
inline_size_of_preceding_right_floats: Au(0),
float: Some(box FloatedBlockInfo::new(float_kind)),
float: float_kind.map(|kind| box FloatedBlockInfo::new(kind)),
flags: BlockFlowFlags::empty(),
}
}
@ -1379,7 +1366,8 @@ impl BlockFlow {
FormattingContextType::Other
}
_ if style.get_box().overflow_x != overflow_x::T::visible ||
style.get_box().overflow_y != overflow_y::T(overflow_x::T::visible) => {
style.get_box().overflow_y != overflow_y::T(overflow_x::T::visible) ||
style.is_multicol() => {
FormattingContextType::Block
}
_ => FormattingContextType::None,