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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//! CSS table formatting contexts.
#![deny(unsafe_blocks)]
use block::{BlockFlow, ISizeAndMarginsComputer, MarginsMayCollapseFlag};
use construct::FlowConstructor;
use context::LayoutContext;
use flow::{FlowClass, Flow};
use fragment::{Fragment, FragmentBorderBoxIterator};
use layout_debug;
use table::{ColumnComputedInlineSize, ColumnIntrinsicInlineSize, InternalTable};
use wrapper::ThreadSafeLayoutNode;
use geom::{Point2D, Rect};
use util::geometry::Au;
use util::logical_geometry::LogicalRect;
use std::fmt;
use style::properties::ComputedValues;
use std::sync::Arc;
/// A table formatting context.
#[derive(RustcEncodable)]
pub struct TableRowGroupFlow {
/// Fields common to all block flows.
pub block_flow: BlockFlow,
/// Information about the intrinsic inline-sizes of each column.
pub column_intrinsic_inline_sizes: Vec<ColumnIntrinsicInlineSize>,
/// Information about the actual inline sizes of each column.
pub column_computed_inline_sizes: Vec<ColumnComputedInlineSize>,
}
impl TableRowGroupFlow {
pub fn from_node_and_fragment(node: &ThreadSafeLayoutNode, fragment: Fragment)
-> TableRowGroupFlow {
TableRowGroupFlow {
block_flow: BlockFlow::from_node_and_fragment(node, fragment),
column_intrinsic_inline_sizes: Vec::new(),
column_computed_inline_sizes: Vec::new(),
}
}
pub fn from_node(constructor: &mut FlowConstructor, node: &ThreadSafeLayoutNode)
-> TableRowGroupFlow {
TableRowGroupFlow {
block_flow: BlockFlow::from_node(constructor, node),
column_intrinsic_inline_sizes: Vec::new(),
column_computed_inline_sizes: Vec::new(),
}
}
pub fn fragment<'a>(&'a mut self) -> &'a Fragment {
&self.block_flow.fragment
}
/// Assign block-size for table-rowgroup flow.
///
/// inline(always) because this is only ever called by in-order or non-in-order top-level
/// methods.
#[inline(always)]
fn assign_block_size_table_rowgroup_base<'a>(&mut self, layout_context: &'a LayoutContext<'a>) {
self.block_flow.assign_block_size_block_base(layout_context, MarginsMayCollapseFlag::MarginsMayNotCollapse)
}
}
impl Flow for TableRowGroupFlow {
fn class(&self) -> FlowClass {
FlowClass::TableRowGroup
}
fn as_table_rowgroup<'a>(&'a mut self) -> &'a mut TableRowGroupFlow {
self
}
fn as_immutable_table_rowgroup<'a>(&'a self) -> &'a TableRowGroupFlow {
self
}
fn as_block<'a>(&'a mut self) -> &'a mut BlockFlow {
&mut self.block_flow
}
fn column_intrinsic_inline_sizes<'a>(&'a mut self) -> &'a mut Vec<ColumnIntrinsicInlineSize> {
&mut self.column_intrinsic_inline_sizes
}
fn column_computed_inline_sizes<'a>(&'a mut self) -> &'a mut Vec<ColumnComputedInlineSize> {
&mut self.column_computed_inline_sizes
}
fn bubble_inline_sizes(&mut self) {
let _scope = layout_debug_scope!("table_rowgroup::bubble_inline_sizes {:x}",
self.block_flow.base.debug_id());
// Proper calculation of intrinsic sizes in table layout requires access to the entire
// table, which we don't have yet. Defer to our parent.
}
/// Recursively (top-down) determines the actual inline-size of child contexts and fragments.
/// When called on this context, the context has had its inline-size set by the parent context.
fn assign_inline_sizes(&mut self, layout_context: &LayoutContext) {
let _scope = layout_debug_scope!("table_rowgroup::assign_inline_sizes {:x}",
self.block_flow.base.debug_id());
debug!("assign_inline_sizes({}): assigning inline_size for flow", "table_rowgroup");
// The position was set to the containing block by the flow's parent.
let containing_block_inline_size = self.block_flow.base.block_container_inline_size;
// FIXME: In case of border-collapse: collapse, inline-start_content_edge should be
// the border width on the inline-start side.
let inline_start_content_edge = Au::new(0);
let content_inline_size = containing_block_inline_size;
let inline_size_computer = InternalTable;
inline_size_computer.compute_used_inline_size(&mut self.block_flow,
layout_context,
containing_block_inline_size);
self.block_flow.propagate_assigned_inline_size_to_children(
layout_context,
inline_start_content_edge,
content_inline_size,
Some(self.column_computed_inline_sizes.as_slice()));
}
fn assign_block_size<'a>(&mut self, ctx: &'a LayoutContext<'a>) {
debug!("assign_block_size: assigning block_size for table_rowgroup");
self.assign_block_size_table_rowgroup_base(ctx);
}
fn compute_absolute_position(&mut self) {
self.block_flow.compute_absolute_position()
}
fn update_late_computed_inline_position_if_necessary(&mut self, inline_position: Au) {
self.block_flow.update_late_computed_inline_position_if_necessary(inline_position)
}
fn update_late_computed_block_position_if_necessary(&mut self, block_position: Au) {
self.block_flow.update_late_computed_block_position_if_necessary(block_position)
}
fn build_display_list(&mut self, layout_context: &LayoutContext) {
debug!("build_display_list_table_rowgroup: same process as block flow");
self.block_flow.build_display_list(layout_context)
}
fn repair_style(&mut self, new_style: &Arc<ComputedValues>) {
self.block_flow.repair_style(new_style)
}
fn compute_overflow(&self) -> Rect<Au> {
self.block_flow.compute_overflow()
}
fn generated_containing_block_rect(&self) -> LogicalRect<Au> {
self.block_flow.generated_containing_block_rect()
}
fn iterate_through_fragment_border_boxes(&self,
iterator: &mut FragmentBorderBoxIterator,
stacking_context_position: &Point2D<Au>) {
self.block_flow.iterate_through_fragment_border_boxes(iterator, stacking_context_position)
}
}
impl fmt::Debug for TableRowGroupFlow {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "TableRowGroupFlow: {:?}", self.block_flow.fragment)
}
}
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