1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/* 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_code)]
use context::LayoutContext;
use css::node_style::StyledNode;
use flow::{BaseFlow, FlowClass, Flow, ForceNonfloatedFlag};
use fragment::{Fragment, FragmentBorderBoxIterator, SpecificFragmentInfo};
use layout_debug;
use wrapper::ThreadSafeLayoutNode;
use geom::{Point2D, Rect};
use util::geometry::{Au, ZERO_RECT};
use std::cmp::max;
use std::fmt;
use style::values::computed::LengthOrPercentageOrAuto;
use style::properties::ComputedValues;
use std::sync::Arc;
/// A table formatting context.
pub struct TableColGroupFlow {
/// Data common to all flows.
pub base: BaseFlow,
/// The associated fragment.
pub fragment: Option<Fragment>,
/// The table column fragments
pub cols: Vec<Fragment>,
/// The specified inline-sizes of table columns. (We use `LengthOrPercentageOrAuto` here in
/// lieu of `ColumnInlineSize` because column groups do not establish minimum or preferred
/// inline sizes.)
pub inline_sizes: Vec<LengthOrPercentageOrAuto>,
}
impl TableColGroupFlow {
pub fn from_node_and_fragments(node: &ThreadSafeLayoutNode,
fragment: Fragment,
fragments: Vec<Fragment>)
-> TableColGroupFlow {
let writing_mode = node.style().writing_mode;
TableColGroupFlow {
base: BaseFlow::new(Some((*node).clone()), writing_mode, ForceNonfloatedFlag::ForceNonfloated),
fragment: Some(fragment),
cols: fragments,
inline_sizes: vec!(),
}
}
}
impl Flow for TableColGroupFlow {
fn class(&self) -> FlowClass {
FlowClass::TableColGroup
}
fn as_table_colgroup<'a>(&'a mut self) -> &'a mut TableColGroupFlow {
self
}
fn bubble_inline_sizes(&mut self) {
let _scope = layout_debug_scope!("table_colgroup::bubble_inline_sizes {:x}",
self.base.debug_id());
for fragment in self.cols.iter() {
// Retrieve the specified value from the appropriate CSS property.
let inline_size = fragment.style().content_inline_size();
let span = match fragment.specific {
SpecificFragmentInfo::TableColumn(col_fragment) => max(col_fragment.span, 1),
_ => panic!("non-table-column fragment inside table column?!"),
};
for _ in 0..span {
self.inline_sizes.push(inline_size)
}
}
}
/// Table column inline-sizes are assigned in the table flow and propagated to table row flows
/// and/or rowgroup flows. Therefore, table colgroup flows do not need to assign inline-sizes.
fn assign_inline_sizes(&mut self, _: &LayoutContext) {
}
/// Table columns do not have block-size.
fn assign_block_size(&mut self, _: &LayoutContext) {
}
fn update_late_computed_inline_position_if_necessary(&mut self, _: Au) {}
fn update_late_computed_block_position_if_necessary(&mut self, _: Au) {}
// Table columns are invisible.
fn build_display_list(&mut self, _: &LayoutContext) {}
fn repair_style(&mut self, _: &Arc<ComputedValues>) {}
fn compute_overflow(&self) -> Rect<Au> {
ZERO_RECT
}
fn iterate_through_fragment_border_boxes(&self,
_: &mut FragmentBorderBoxIterator,
_: &Point2D<Au>) {}
fn mutate_fragments(&mut self, _: &mut FnMut(&mut Fragment)) {}
}
impl fmt::Debug for TableColGroupFlow {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self.fragment {
Some(ref rb) => write!(f, "TableColGroupFlow: {:?}", rb),
None => write!(f, "TableColGroupFlow"),
}
}
}
|
