Struct layout_2020::flow::PlacementState

struct PlacementState<'container> {
    next_in_flow_margin_collapses_with_parent_start_margin: bool,
    last_in_flow_margin_collapses_with_parent_end_margin: bool,
    start_margin: CollapsedMargin,
    current_margin: CollapsedMargin,
    current_block_direction_position: Au,
    inflow_baselines: Baselines,
    is_inline_block_context: bool,
    marker_block_size: Option<Au>,
    containing_block: &'container ContainingBlock<'container>,
}

State that we maintain when placing blocks.

In parallel mode, this placement is done after all child blocks are laid out. In sequential mode, this is done right after each block is laid out.

Fields

next_in_flow_margin_collapses_with_parent_start_margin: bool

last_in_flow_margin_collapses_with_parent_end_margin: bool

start_margin: CollapsedMargin

current_margin: CollapsedMargin

current_block_direction_position: Au

inflow_baselines: Baselines

is_inline_block_context: bool

marker_block_size: Option<Au>

If this PlacementState is laying out a list item with an outside marker. Record the block size of that marker, because the content block size of the list item needs to be at least as tall as the marker size – even though the marker doesn’t advance the block position of the placement.

containing_block: &'container ContainingBlock<'container>

The ContainingBlock of the container into which this PlacementState is laying out fragments. This is used to convert between physical and logical geometry.

Implementations

impl<'container> PlacementState<'container>

fn new( collapsible_with_parent_start_margin: CollapsibleWithParentStartMargin, containing_block: &'container ContainingBlock<'container>, ) -> PlacementState<'_>

fn place_fragment_and_update_baseline( &mut self, fragment: &mut Fragment, sequential_layout_state: Option<&mut SequentialLayoutState>, )

fn place_fragment( &mut self, fragment: &mut Fragment, sequential_layout_state: Option<&mut SequentialLayoutState>, )

Place a single Fragment in a block level context using the state so far and information gathered from the Fragment itself.

fn finish(self) -> (Au, CollapsedBlockMargins, Baselines)