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layout: Stop calling normal block size assignment for flex container

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No need to call the `assign_block_size_block_base()` method of normal
block since it is implemented for CSS2.
This commit is contained in:
Pu Xingyu 2017-08-22 01:49:28 +08:00
parent 6a1b0d0526
commit 9103743d0c
16 changed files with 29 additions and 50 deletions
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33
components/layout/flex.rs
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@ -7,7 +7,7 @@
#![deny(unsafe_code)]
use app_units::{Au, MAX_AU};
use block::{BlockFlow, MarginsMayCollapseFlag};
use block::{AbsoluteAssignBSizesTraversal, BlockFlow, MarginsMayCollapseFlag};
use context::LayoutContext;
use display_list_builder::{DisplayListBuildState, FlexFlowDisplayListBuilding};
use euclid::Point2D;
@ -17,6 +17,7 @@ use flow::{Flow, FlowClass, ImmutableFlowUtils, OpaqueFlow};
use flow::{INLINE_POSITION_IS_STATIC, IS_ABSOLUTELY_POSITIONED};
use fragment::{Fragment, FragmentBorderBoxIterator, Overflow};
use layout_debug;
use model::{AdjoiningMargins, CollapsibleMargins};
use model::{IntrinsicISizes, MaybeAuto, SizeConstraint};
use std::cmp::{max, min};
use std::ops::Range;
@ -28,6 +29,7 @@ use style::servo::restyle_damage::{REFLOW, REFLOW_OUT_OF_FLOW};
use style::values::computed::{LengthOrPercentage, LengthOrPercentageOrAuto, LengthOrPercentageOrNone};
use style::values::computed::flex::FlexBasis;
use style::values::generics::flex::FlexBasis as GenericFlexBasis;
use traversal::PreorderFlowTraversal;
/// The size of an axis. May be a specified size, a min/max
/// constraint, or an unlimited size
@ -802,7 +804,6 @@ impl FlexFlow {
let total_block_size = total_cross_size + self.block_flow.fragment.border_padding.block_start_end();
self.block_flow.fragment.border_box.size.block = total_block_size;
self.block_flow.base.position.size.block = total_block_size;
}
}
@ -939,13 +940,29 @@ impl Flow for FlexFlow {
}
fn assign_block_size(&mut self, layout_context: &LayoutContext) {
self.block_flow
.assign_block_size_block_base(layout_context,
None,
MarginsMayCollapseFlag::MarginsMayNotCollapse);
match self.main_mode {
Direction::Inline => self.inline_mode_assign_block_size(layout_context),
Direction::Block => self.block_mode_assign_block_size(),
Direction::Inline => {
self.inline_mode_assign_block_size(layout_context);
let block_start = AdjoiningMargins::from_margin(self.block_flow.fragment.margin.block_start);
let block_end = AdjoiningMargins::from_margin(self.block_flow.fragment.margin.block_end);
self.block_flow.base.collapsible_margins = CollapsibleMargins::Collapse(block_start, block_end);
// TODO(stshine): assign proper static position for absolute descendants.
if (&*self as &Flow).contains_roots_of_absolute_flow_tree() {
// Assign block-sizes for all flows in this absolute flow tree.
// This is preorder because the block-size of an absolute flow may depend on
// the block-size of its containing block, which may also be an absolute flow.
let assign_abs_b_sizes = AbsoluteAssignBSizesTraversal(layout_context.shared_context());
assign_abs_b_sizes.traverse_absolute_flows(&mut *self);
}
}
Direction::Block =>{
self.block_flow
.assign_block_size_block_base(layout_context,
None,
MarginsMayCollapseFlag::MarginsMayNotCollapse);
self.block_mode_assign_block_size();
}
}
}