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Update rustc to revision 3dcd2157403163789aaf21a9ab3c4d30a7c6494d.

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Ms2ger 2014-12-17 10:42:52 +01:00 • committed by Josh Matthews
parent b8900782b0
commit 466faac2a5
223 changed files with 4414 additions and 4105 deletions
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344
components/layout/block.rs
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@ -31,9 +31,9 @@ use construct::FlowConstructor;
use context::LayoutContext;
use css::node_style::StyledNode;
use display_list_builder::{BlockFlowDisplayListBuilding, FragmentDisplayListBuilding};
use floats::{ClearBoth, ClearLeft, ClearRight, FloatKind, FloatLeft, Floats, PlacementInfo};
use flow::{AbsolutePositionInfo, BaseFlow, BlockFlowClass, FloatIfNecessary, FlowClass, Flow};
use flow::{ForceNonfloated, ImmutableFlowUtils, MutableFlowUtils, PreorderFlowTraversal};
use floats::{ClearType, FloatKind, Floats, PlacementInfo};
use flow::{AbsolutePositionInfo, BaseFlow, ForceNonfloatedFlag, FlowClass, Flow};
use flow::{ImmutableFlowUtils, MutableFlowUtils, PreorderFlowTraversal};
use flow::{PostorderFlowTraversal, mut_base};
use flow::{HAS_LEFT_FLOATED_DESCENDANTS, HAS_RIGHT_FLOATED_DESCENDANTS};
use flow::{IMPACTED_BY_LEFT_FLOATS, IMPACTED_BY_RIGHT_FLOATS};
@ -41,12 +41,11 @@ use flow::{LAYERS_NEEDED_FOR_DESCENDANTS, NEEDS_LAYER};
use flow::{IS_ABSOLUTELY_POSITIONED};
use flow::{CLEARS_LEFT, CLEARS_RIGHT};
use flow;
use fragment::{Fragment, ImageFragment, InlineBlockFragment, FragmentBoundsIterator};
use fragment::ScannedTextFragment;
use fragment::{Fragment, FragmentBoundsIterator, SpecificFragmentInfo};
use incremental::{REFLOW, REFLOW_OUT_OF_FLOW};
use layout_debug;
use model::{Auto, IntrinsicISizes, MarginCollapseInfo, MarginsCollapse, MarginsCollapseThrough};
use model::{MaybeAuto, NoCollapsibleMargins, Specified, specified, specified_or_none};
use model::{IntrinsicISizes, MarginCollapseInfo};
use model::{MaybeAuto, CollapsibleMargins, specified, specified_or_none};
use table::ColumnComputedInlineSize;
use wrapper::ThreadSafeLayoutNode;
@ -60,8 +59,8 @@ use servo_util::opts;
use std::cmp::{max, min};
use std::fmt;
use style::ComputedValues;
use style::computed_values::{LPA_Auto, LPA_Length, LPA_Percentage, LPN_Length, LPN_None};
use style::computed_values::{LPN_Percentage, LP_Length, LP_Percentage, box_sizing, display, float};
use style::computed_values::{LengthOrPercentageOrAuto, LengthOrPercentageOrNone};
use style::computed_values::{LengthOrPercentage, box_sizing, display, float};
use style::computed_values::{overflow, position};
use sync::Arc;
@ -138,7 +137,7 @@ impl BSizeConstraintSolution {
let static_position_block_start = static_b_offset;
let (block_start, block_end, block_size, margin_block_start, margin_block_end) = match (block_start, block_end, block_size) {
(Auto, Auto, Auto) => {
(MaybeAuto::Auto, MaybeAuto::Auto, MaybeAuto::Auto) => {
let margin_block_start = block_start_margin.specified_or_zero();
let margin_block_end = block_end_margin.specified_or_zero();
let block_start = static_position_block_start;
@ -149,23 +148,23 @@ impl BSizeConstraintSolution {
let sum = block_start + block_size + margin_block_start + margin_block_end;
(block_start, available_block_size - sum, block_size, margin_block_start, margin_block_end)
}
(Specified(block_start), Specified(block_end), Specified(block_size)) => {
(MaybeAuto::Specified(block_start), MaybeAuto::Specified(block_end), MaybeAuto::Specified(block_size)) => {
match (block_start_margin, block_end_margin) {
(Auto, Auto) => {
(MaybeAuto::Auto, MaybeAuto::Auto) => {
let total_margin_val = available_block_size - block_start - block_end - block_size;
(block_start, block_end, block_size,
total_margin_val.scale_by(0.5),
total_margin_val.scale_by(0.5))
}
(Specified(margin_block_start), Auto) => {
(MaybeAuto::Specified(margin_block_start), MaybeAuto::Auto) => {
let sum = block_start + block_end + block_size + margin_block_start;
(block_start, block_end, block_size, margin_block_start, available_block_size - sum)
}
(Auto, Specified(margin_block_end)) => {
(MaybeAuto::Auto, MaybeAuto::Specified(margin_block_end)) => {
let sum = block_start + block_end + block_size + margin_block_end;
(block_start, block_end, block_size, available_block_size - sum, margin_block_end)
}
(Specified(margin_block_start), Specified(margin_block_end)) => {
(MaybeAuto::Specified(margin_block_start), MaybeAuto::Specified(margin_block_end)) => {
// Values are over-constrained. Ignore value for 'block-end'.
let sum = block_start + block_size + margin_block_start + margin_block_end;
(block_start, available_block_size - sum, block_size, margin_block_start, margin_block_end)
@ -176,19 +175,19 @@ impl BSizeConstraintSolution {
// For the rest of the cases, auto values for margin are set to 0
// If only one is Auto, solve for it
(Auto, Specified(block_end), Specified(block_size)) => {
(MaybeAuto::Auto, MaybeAuto::Specified(block_end), MaybeAuto::Specified(block_size)) => {
let margin_block_start = block_start_margin.specified_or_zero();
let margin_block_end = block_end_margin.specified_or_zero();
let sum = block_end + block_size + margin_block_start + margin_block_end;
(available_block_size - sum, block_end, block_size, margin_block_start, margin_block_end)
}
(Specified(block_start), Auto, Specified(block_size)) => {
(MaybeAuto::Specified(block_start), MaybeAuto::Auto, MaybeAuto::Specified(block_size)) => {
let margin_block_start = block_start_margin.specified_or_zero();
let margin_block_end = block_end_margin.specified_or_zero();
let sum = block_start + block_size + margin_block_start + margin_block_end;
(block_start, available_block_size - sum, block_size, margin_block_start, margin_block_end)
}
(Specified(block_start), Specified(block_end), Auto) => {
(MaybeAuto::Specified(block_start), MaybeAuto::Specified(block_end), MaybeAuto::Auto) => {
let margin_block_start = block_start_margin.specified_or_zero();
let margin_block_end = block_end_margin.specified_or_zero();
let sum = block_start + block_end + margin_block_start + margin_block_end;
@ -197,14 +196,14 @@ impl BSizeConstraintSolution {
// If block-size is auto, then block-size is content block-size. Solve for the
// non-auto value.
(Specified(block_start), Auto, Auto) => {
(MaybeAuto::Specified(block_start), MaybeAuto::Auto, MaybeAuto::Auto) => {
let margin_block_start = block_start_margin.specified_or_zero();
let margin_block_end = block_end_margin.specified_or_zero();
let block_size = content_block_size;
let sum = block_start + block_size + margin_block_start + margin_block_end;
(block_start, available_block_size - sum, block_size, margin_block_start, margin_block_end)
}
(Auto, Specified(block_end), Auto) => {
(MaybeAuto::Auto, MaybeAuto::Specified(block_end), MaybeAuto::Auto) => {
let margin_block_start = block_start_margin.specified_or_zero();
let margin_block_end = block_end_margin.specified_or_zero();
let block_size = content_block_size;
@ -212,7 +211,7 @@ impl BSizeConstraintSolution {
(available_block_size - sum, block_end, block_size, margin_block_start, margin_block_end)
}
(Auto, Auto, Specified(block_size)) => {
(MaybeAuto::Auto, MaybeAuto::Auto, MaybeAuto::Specified(block_size)) => {
let margin_block_start = block_start_margin.specified_or_zero();
let margin_block_end = block_end_margin.specified_or_zero();
let block_start = static_position_block_start;
@ -249,30 +248,30 @@ impl BSizeConstraintSolution {
let static_position_block_start = static_b_offset;
let (block_start, block_end, block_size, margin_block_start, margin_block_end) = match (block_start, block_end) {
(Auto, Auto) => {
(MaybeAuto::Auto, MaybeAuto::Auto) => {
let margin_block_start = block_start_margin.specified_or_zero();
let margin_block_end = block_end_margin.specified_or_zero();
let block_start = static_position_block_start;
let sum = block_start + block_size + margin_block_start + margin_block_end;
(block_start, available_block_size - sum, block_size, margin_block_start, margin_block_end)
}
(Specified(block_start), Specified(block_end)) => {
(MaybeAuto::Specified(block_start), MaybeAuto::Specified(block_end)) => {
match (block_start_margin, block_end_margin) {
(Auto, Auto) => {
(MaybeAuto::Auto, MaybeAuto::Auto) => {
let total_margin_val = available_block_size - block_start - block_end - block_size;
(block_start, block_end, block_size,
total_margin_val.scale_by(0.5),
total_margin_val.scale_by(0.5))
}
(Specified(margin_block_start), Auto) => {
(MaybeAuto::Specified(margin_block_start), MaybeAuto::Auto) => {
let sum = block_start + block_end + block_size + margin_block_start;
(block_start, block_end, block_size, margin_block_start, available_block_size - sum)
}
(Auto, Specified(margin_block_end)) => {
(MaybeAuto::Auto, MaybeAuto::Specified(margin_block_end)) => {
let sum = block_start + block_end + block_size + margin_block_end;
(block_start, block_end, block_size, available_block_size - sum, margin_block_end)
}
(Specified(margin_block_start), Specified(margin_block_end)) => {
(MaybeAuto::Specified(margin_block_start), MaybeAuto::Specified(margin_block_end)) => {
// Values are over-constrained. Ignore value for 'block-end'.
let sum = block_start + block_size + margin_block_start + margin_block_end;
(block_start, available_block_size - sum, block_size, margin_block_start, margin_block_end)
@ -281,13 +280,13 @@ impl BSizeConstraintSolution {
}
// If only one is Auto, solve for it
(Auto, Specified(block_end)) => {
(MaybeAuto::Auto, MaybeAuto::Specified(block_end)) => {
let margin_block_start = block_start_margin.specified_or_zero();
let margin_block_end = block_end_margin.specified_or_zero();
let sum = block_end + block_size + margin_block_start + margin_block_end;
(available_block_size - sum, block_end, block_size, margin_block_start, margin_block_end)
}
(Specified(block_start), Auto) => {
(MaybeAuto::Specified(block_start), MaybeAuto::Auto) => {
let margin_block_start = block_start_margin.specified_or_zero();
let margin_block_end = block_end_margin.specified_or_zero();
let sum = block_start + block_size + margin_block_start + margin_block_end;
@ -325,25 +324,26 @@ impl CandidateBSizeIterator {
// `min-height` and `max-height`, percentage values are ignored.
let block_size = match (fragment.style.content_block_size(), block_container_block_size) {
(LPA_Percentage(percent), Some(block_container_block_size)) => {
Specified(block_container_block_size.scale_by(percent))
(LengthOrPercentageOrAuto::Percentage(percent), Some(block_container_block_size)) => {
MaybeAuto::Specified(block_container_block_size.scale_by(percent))
}
(LPA_Percentage(_), None) | (LPA_Auto, _) => Auto,
(LPA_Length(length), _) => Specified(length),
(LengthOrPercentageOrAuto::Percentage(_), None) | (LengthOrPercentageOrAuto::Auto, _) => MaybeAuto::Auto,
(LengthOrPercentageOrAuto::Length(length), _) => MaybeAuto::Specified(length),
};
let max_block_size = match (fragment.style.max_block_size(), block_container_block_size) {
(LPN_Percentage(percent), Some(block_container_block_size)) => {
(LengthOrPercentageOrNone::Percentage(percent), Some(block_container_block_size)) => {
Some(block_container_block_size.scale_by(percent))
}
(LPN_Percentage(_), None) | (LPN_None, _) => None,
(LPN_Length(length), _) => Some(length),
(LengthOrPercentageOrNone::Percentage(_), None) |
(LengthOrPercentageOrNone::None, _) => None,
(LengthOrPercentageOrNone::Length(length), _) => Some(length),
};
let min_block_size = match (fragment.style.min_block_size(), block_container_block_size) {
(LP_Percentage(percent), Some(block_container_block_size)) => {
(LengthOrPercentage::Percentage(percent), Some(block_container_block_size)) => {
block_container_block_size.scale_by(percent)
}
(LP_Percentage(_), None) => Au(0),
(LP_Length(length), _) => length,
(LengthOrPercentage::Percentage(_), None) => Au(0),
(LengthOrPercentage::Length(length), _) => length,
};
// If the style includes `box-sizing: border-box`, subtract the border and padding.
@ -357,7 +357,7 @@ impl CandidateBSizeIterator {
max_block_size: max_block_size.map(|size| adjust(size, adjustment_for_box_sizing)),
min_block_size: adjust(min_block_size, adjustment_for_box_sizing),
candidate_value: Au(0),
status: InitialCandidateBSizeStatus,
status: CandidateBSizeIteratorStatus::Initial,
};
fn adjust(size: Au, delta: Au) -> Au {
@ -369,48 +369,48 @@ impl CandidateBSizeIterator {
impl Iterator<MaybeAuto> for CandidateBSizeIterator {
fn next(&mut self) -> Option<MaybeAuto> {
self.status = match self.status {
InitialCandidateBSizeStatus => TryingBSizeCandidateBSizeStatus,
TryingBSizeCandidateBSizeStatus => {
CandidateBSizeIteratorStatus::Initial => CandidateBSizeIteratorStatus::Trying,
CandidateBSizeIteratorStatus::Trying => {
match self.max_block_size {
Some(max_block_size) if self.candidate_value > max_block_size => {
TryingMaxCandidateBSizeStatus
CandidateBSizeIteratorStatus::TryingMax
}
_ if self.candidate_value < self.min_block_size => TryingMinCandidateBSizeStatus,
_ => FoundCandidateBSizeStatus,
_ if self.candidate_value < self.min_block_size => CandidateBSizeIteratorStatus::TryingMin,
_ => CandidateBSizeIteratorStatus::Found,
}
}
TryingMaxCandidateBSizeStatus => {
CandidateBSizeIteratorStatus::TryingMax => {
if self.candidate_value < self.min_block_size {
TryingMinCandidateBSizeStatus
CandidateBSizeIteratorStatus::TryingMin
} else {
FoundCandidateBSizeStatus
CandidateBSizeIteratorStatus::Found
}
}
TryingMinCandidateBSizeStatus | FoundCandidateBSizeStatus => {
FoundCandidateBSizeStatus
CandidateBSizeIteratorStatus::TryingMin | CandidateBSizeIteratorStatus::Found => {
CandidateBSizeIteratorStatus::Found
}
};
match self.status {
TryingBSizeCandidateBSizeStatus => Some(self.block_size),
TryingMaxCandidateBSizeStatus => {
Some(Specified(self.max_block_size.unwrap()))
CandidateBSizeIteratorStatus::Trying => Some(self.block_size),
CandidateBSizeIteratorStatus::TryingMax => {
Some(MaybeAuto::Specified(self.max_block_size.unwrap()))
}
TryingMinCandidateBSizeStatus => {
Some(Specified(self.min_block_size))
CandidateBSizeIteratorStatus::TryingMin => {
Some(MaybeAuto::Specified(self.min_block_size))
}
FoundCandidateBSizeStatus => None,
InitialCandidateBSizeStatus => panic!(),
CandidateBSizeIteratorStatus::Found => None,
CandidateBSizeIteratorStatus::Initial => panic!(),
}
}
}
enum CandidateBSizeIteratorStatus {
InitialCandidateBSizeStatus,
TryingBSizeCandidateBSizeStatus,
TryingMaxCandidateBSizeStatus,
TryingMinCandidateBSizeStatus,
FoundCandidateBSizeStatus,
Initial,
Trying,
TryingMax,
TryingMin,
Found,
}
// A helper function used in block-size calculation.
@ -479,12 +479,12 @@ impl<'a> PostorderFlowTraversal for AbsoluteStoreOverflowTraversal<'a> {
}
pub enum BlockType {
BlockReplacedType,
BlockNonReplacedType,
AbsoluteReplacedType,
AbsoluteNonReplacedType,
FloatReplacedType,
FloatNonReplacedType,
Replaced,
NonReplaced,
AbsoluteReplaced,
AbsoluteNonReplaced,
FloatReplaced,
FloatNonReplaced,
}
#[deriving(Clone, PartialEq)]
@ -495,9 +495,9 @@ pub enum MarginsMayCollapseFlag {
#[deriving(PartialEq)]
enum FormattingContextType {
NonformattingContext,
BlockFormattingContext,
OtherFormattingContext,
None,
Block,
Other,
}
// Propagates the `layers_needed_for_descendants` flag appropriately from a child. This is called
@ -571,7 +571,7 @@ impl BlockFlow {
pub fn from_node(constructor: &mut FlowConstructor, node: &ThreadSafeLayoutNode) -> BlockFlow {
let writing_mode = node.style().writing_mode;
BlockFlow {
base: BaseFlow::new(Some((*node).clone()), writing_mode, ForceNonfloated),
base: BaseFlow::new(Some((*node).clone()), writing_mode, ForceNonfloatedFlag::ForceNonfloated),
fragment: Fragment::new(constructor, node),
static_b_offset: Au::new(0),
inline_size_of_preceding_left_floats: Au(0),
@ -585,7 +585,7 @@ impl BlockFlow {
pub fn from_node_and_fragment(node: &ThreadSafeLayoutNode, fragment: Fragment) -> BlockFlow {
let writing_mode = node.style().writing_mode;
BlockFlow {
base: BaseFlow::new(Some((*node).clone()), writing_mode, ForceNonfloated),
base: BaseFlow::new(Some((*node).clone()), writing_mode, ForceNonfloatedFlag::ForceNonfloated),
fragment: fragment,
static_b_offset: Au::new(0),
inline_size_of_preceding_left_floats: Au(0),
@ -602,7 +602,7 @@ impl BlockFlow {
-> BlockFlow {
let writing_mode = node.style().writing_mode;
BlockFlow {
base: BaseFlow::new(Some((*node).clone()), writing_mode, FloatIfNecessary),
base: BaseFlow::new(Some((*node).clone()), writing_mode, ForceNonfloatedFlag::FloatIfNecessary),
fragment: Fragment::new(constructor, node),
static_b_offset: Au::new(0),
inline_size_of_preceding_left_floats: Au(0),
@ -619,7 +619,7 @@ impl BlockFlow {
-> BlockFlow {
let writing_mode = node.style().writing_mode;
BlockFlow {
base: BaseFlow::new(Some((*node).clone()), writing_mode, FloatIfNecessary),
base: BaseFlow::new(Some((*node).clone()), writing_mode, ForceNonfloatedFlag::FloatIfNecessary),
fragment: fragment,
static_b_offset: Au::new(0),
inline_size_of_preceding_left_floats: Au(0),
@ -637,21 +637,21 @@ impl BlockFlow {
pub fn block_type(&self) -> BlockType {
if self.base.flags.contains(IS_ABSOLUTELY_POSITIONED) {
if self.is_replaced_content() {
AbsoluteReplacedType
BlockType::AbsoluteReplaced
} else {
AbsoluteNonReplacedType
BlockType::AbsoluteNonReplaced
}
} else if self.base.flags.is_float() {
if self.is_replaced_content() {
FloatReplacedType
BlockType::FloatReplaced
} else {
FloatNonReplacedType
BlockType::FloatNonReplaced
}
} else {
if self.is_replaced_content() {
BlockReplacedType
BlockType::Replaced
} else {
BlockNonReplacedType
BlockType::NonReplaced
}
}
}
@ -662,27 +662,27 @@ impl BlockFlow {
containing_block_inline_size: Au) {
let block_type = self.block_type();
match block_type {
AbsoluteReplacedType => {
BlockType::AbsoluteReplaced => {
let inline_size_computer = AbsoluteReplaced;
inline_size_computer.compute_used_inline_size(self, ctx, containing_block_inline_size);
}
AbsoluteNonReplacedType => {
BlockType::AbsoluteNonReplaced => {
let inline_size_computer = AbsoluteNonReplaced;
inline_size_computer.compute_used_inline_size(self, ctx, containing_block_inline_size);
}
FloatReplacedType => {
BlockType::FloatReplaced => {
let inline_size_computer = FloatReplaced;
inline_size_computer.compute_used_inline_size(self, ctx, containing_block_inline_size);
}
FloatNonReplacedType => {
BlockType::FloatNonReplaced => {
let inline_size_computer = FloatNonReplaced;
inline_size_computer.compute_used_inline_size(self, ctx, containing_block_inline_size);
}
BlockReplacedType => {
BlockType::Replaced => {
let inline_size_computer = BlockReplaced;
inline_size_computer.compute_used_inline_size(self, ctx, containing_block_inline_size);
}
BlockNonReplacedType => {
BlockType::NonReplaced => {
let inline_size_computer = BlockNonReplaced;
inline_size_computer.compute_used_inline_size(self, ctx, containing_block_inline_size);
}
@ -767,7 +767,7 @@ impl BlockFlow {
/// and image fragments.
fn is_replaced_content(&self) -> bool {
match self.fragment.specific {
ScannedTextFragment(_) | ImageFragment(_) | InlineBlockFragment(_) => true,
SpecificFragmentInfo::ScannedText(_) | SpecificFragmentInfo::Image(_) | SpecificFragmentInfo::InlineBlock(_) => true,
_ => false,
}
}
@ -793,11 +793,11 @@ impl BlockFlow {
}
let (block_start_margin_value, block_end_margin_value) = match self.base.collapsible_margins {
MarginsCollapseThrough(_) => panic!("Margins unexpectedly collapsed through root flow."),
MarginsCollapse(block_start_margin, block_end_margin) => {
CollapsibleMargins::CollapseThrough(_) => panic!("Margins unexpectedly collapsed through root flow."),
CollapsibleMargins::Collapse(block_start_margin, block_end_margin) => {
(block_start_margin.collapse(), block_end_margin.collapse())
}
NoCollapsibleMargins(block_start, block_end) => (block_start, block_end),
CollapsibleMargins::None(block_start, block_end) => (block_start, block_end),
};
// Shift all kids down (or up, if margins are negative) if necessary.
@ -840,7 +840,7 @@ impl BlockFlow {
// Absolute positioning establishes a block formatting context. Don't propagate floats
// in or out. (But do propagate them between kids.)
if self.base.flags.contains(IS_ABSOLUTELY_POSITIONED) ||
margins_may_collapse != MarginsMayCollapse {
margins_may_collapse != MarginsMayCollapseFlag::MarginsMayCollapse {
self.base.floats = Floats::new(self.fragment.style.writing_mode);
}
@ -853,7 +853,7 @@ impl BlockFlow {
translate_including_floats(&mut cur_b, block_start_offset, &mut self.base.floats);
let can_collapse_block_start_margin_with_kids =
margins_may_collapse == MarginsMayCollapse &&
margins_may_collapse == MarginsMayCollapseFlag::MarginsMayCollapse &&
!self.base.flags.contains(IS_ABSOLUTELY_POSITIONED) &&
self.fragment.border_padding.block_start == Au(0);
margin_collapse_info.initialize_block_start_margin(
@ -924,9 +924,9 @@ impl BlockFlow {
let clearance = match (flow::base(kid).flags.contains(CLEARS_LEFT),
flow::base(kid).flags.contains(CLEARS_RIGHT)) {
(false, false) => Au(0),
(true, false) => floats.clearance(ClearLeft),
(false, true) => floats.clearance(ClearRight),
(true, true) => floats.clearance(ClearBoth),
(true, false) => floats.clearance(ClearType::Left),
(false, true) => floats.clearance(ClearType::Right),
(true, true) => floats.clearance(ClearType::Both),
};
translate_including_floats(&mut cur_b, clearance, &mut floats);
@ -961,7 +961,7 @@ impl BlockFlow {
// Add in our block-end margin and compute our collapsible margins.
let can_collapse_block_end_margin_with_kids =
margins_may_collapse == MarginsMayCollapse &&
margins_may_collapse == MarginsMayCollapseFlag::MarginsMayCollapse &&
!self.base.flags.contains(IS_ABSOLUTELY_POSITIONED) &&
self.fragment.border_padding.block_end == Au(0);
let (collapsible_margins, delta) =
@ -983,11 +983,11 @@ impl BlockFlow {
block_size = Au::max(screen_size.block, block_size)
}
if is_root || self.formatting_context_type() != NonformattingContext ||
if is_root || self.formatting_context_type() != FormattingContextType::None ||
self.base.flags.contains(IS_ABSOLUTELY_POSITIONED) {
// The content block-size includes all the floats per CSS 2.1 § 10.6.7. The easiest
// way to handle this is to just treat it as clearance.
block_size = block_size + floats.clearance(ClearBoth);
block_size = block_size + floats.clearance(ClearType::Both);
}
if self.base.flags.contains(IS_ABSOLUTELY_POSITIONED) {
@ -1014,8 +1014,8 @@ impl BlockFlow {
Some(candidate_block_size) => {
candidate_block_size_iterator.candidate_value =
match candidate_block_size {
Auto => block_size,
Specified(value) => value
MaybeAuto::Auto => block_size,
MaybeAuto::Specified(value) => value
}
}
None => break,
@ -1069,7 +1069,7 @@ impl BlockFlow {
// Also don't remove the dirty bits if we're a block formatting context since our inline
// size has not yet been computed. (See `assign_inline_position_for_formatting_context()`.)
if (self.base.flags.is_float() ||
self.formatting_context_type() == NonformattingContext) &&
self.formatting_context_type() == FormattingContextType::None) &&
!self.base.flags.contains(IS_ABSOLUTELY_POSITIONED) {
self.base.restyle_damage.remove(REFLOW_OUT_OF_FLOW | REFLOW);
}
@ -1147,12 +1147,12 @@ impl BlockFlow {
// calculated during assign-inline-size.
let margin = self.fragment.style().logical_margin();
let margin_block_start = match margin.block_start {
LPA_Auto => Auto,
_ => Specified(self.fragment.margin.block_start)
LengthOrPercentageOrAuto::Auto => MaybeAuto::Auto,
_ => MaybeAuto::Specified(self.fragment.margin.block_start)
};
let margin_block_end = match margin.block_end {
LPA_Auto => Auto,
_ => Specified(self.fragment.margin.block_end)
LengthOrPercentageOrAuto::Auto => MaybeAuto::Auto,
_ => MaybeAuto::Specified(self.fragment.margin.block_end)
};
let block_start;
@ -1292,7 +1292,7 @@ impl BlockFlow {
// direction.)
let mut inline_size_of_preceding_left_floats = Au(0);
let mut inline_size_of_preceding_right_floats = Au(0);
if self.formatting_context_type() == NonformattingContext {
if self.formatting_context_type() == FormattingContextType::None {
inline_size_of_preceding_left_floats = self.inline_size_of_preceding_left_floats;
inline_size_of_preceding_right_floats = self.inline_size_of_preceding_right_floats;
}
@ -1301,11 +1301,11 @@ impl BlockFlow {
let content_block_size = self.fragment.style().content_block_size();
let explicit_content_size = match (content_block_size,
self.base.block_container_explicit_block_size) {
(LPA_Percentage(percent), Some(container_size)) => {
(LengthOrPercentageOrAuto::Percentage(percent), Some(container_size)) => {
Some(container_size.scale_by(percent))
}
(LPA_Percentage(_), None) | (LPA_Auto, _) => None,
(LPA_Length(length), _) => Some(length),
(LengthOrPercentageOrAuto::Percentage(_), None) | (LengthOrPercentageOrAuto::Auto, _) => None,
(LengthOrPercentageOrAuto::Length(length), _) => Some(length),
};
// Calculate containing block inline size.
@ -1410,14 +1410,14 @@ impl BlockFlow {
fn formatting_context_type(&self) -> FormattingContextType {
let style = self.fragment.style();
if style.get_box().float != float::none {
return OtherFormattingContext
return FormattingContextType::Other
}
match style.get_box().display {
display::table_cell | display::table_caption | display::inline_block => {
OtherFormattingContext
FormattingContextType::Other
}
_ if style.get_box().overflow != overflow::visible => BlockFormattingContext,
_ => NonformattingContext,
_ if style.get_box().overflow != overflow::visible => FormattingContextType::Block,
_ => FormattingContextType::None,
}
}
@ -1435,7 +1435,7 @@ impl BlockFlow {
///
/// FIXME(pcwalton): This code is not incremental-reflow-safe (i.e. not idempotent).
fn assign_inline_position_for_formatting_context(&mut self) {
debug_assert!(self.formatting_context_type() != NonformattingContext);
debug_assert!(self.formatting_context_type() != FormattingContextType::None);
if !self.base.restyle_damage.intersects(REFLOW_OUT_OF_FLOW | REFLOW) {
return
@ -1449,7 +1449,7 @@ impl BlockFlow {
self.fragment.border_box.size.block),
ceiling: self.base.position.start.b,
max_inline_size: MAX_AU,
kind: FloatLeft,
kind: FloatKind::Left,
};
// Offset our position by whatever displacement is needed to not impact the floats.
@ -1482,7 +1482,7 @@ impl BlockFlow {
impl Flow for BlockFlow {
fn class(&self) -> FlowClass {
BlockFlowClass
FlowClass::Block
}
fn as_block<'a>(&'a mut self) -> &'a mut BlockFlow {
@ -1510,7 +1510,7 @@ impl Flow for BlockFlow {
// and preferred width, rather than bubbling up children inline
// width.
let fixed_width = match self.fragment.style().get_box().width {
LPA_Length(_) => true,
LengthOrPercentageOrAuto::Length(_) => true,
_ => false,
};
@ -1602,8 +1602,8 @@ impl Flow for BlockFlow {
// Formatting contexts are never impacted by floats.
match self.formatting_context_type() {
NonformattingContext => {}
BlockFormattingContext => {
FormattingContextType::None => {}
FormattingContextType::Block => {
self.base.flags.remove(IMPACTED_BY_LEFT_FLOATS);
self.base.flags.remove(IMPACTED_BY_RIGHT_FLOATS);
@ -1615,7 +1615,7 @@ impl Flow for BlockFlow {
self.inline_size_of_preceding_left_floats -
self.inline_size_of_preceding_right_floats;
}
OtherFormattingContext => {
FormattingContextType::Other => {
self.base.flags.remove(IMPACTED_BY_LEFT_FLOATS);
self.base.flags.remove(IMPACTED_BY_RIGHT_FLOATS);
}
@ -1646,7 +1646,7 @@ impl Flow for BlockFlow {
return false
}
let is_formatting_context = self.formatting_context_type() != NonformattingContext;
let is_formatting_context = self.formatting_context_type() != FormattingContextType::None;
if !self.base.flags.contains(IS_ABSOLUTELY_POSITIONED) && is_formatting_context {
self.assign_inline_position_for_formatting_context();
}
@ -1687,10 +1687,10 @@ impl Flow for BlockFlow {
} else if self.is_root() || self.base.flags.is_float() || self.is_inline_block() {
// Root element margins should never be collapsed according to CSS § 8.3.1.
debug!("assign_block_size: assigning block_size for root flow");
self.assign_block_size_block_base(ctx, MarginsMayNotCollapse);
self.assign_block_size_block_base(ctx, MarginsMayCollapseFlag::MarginsMayNotCollapse);
} else {
debug!("assign_block_size: assigning block_size for block");
self.assign_block_size_block_base(ctx, MarginsMayCollapse);
self.assign_block_size_block_base(ctx, MarginsMayCollapseFlag::MarginsMayCollapse);
}
}
@ -1839,16 +1839,16 @@ impl Flow for BlockFlow {
fn update_late_computed_inline_position_if_necessary(&mut self, inline_position: Au) {
if self.base.flags.contains(IS_ABSOLUTELY_POSITIONED) &&
self.fragment.style().logical_position().inline_start == LPA_Auto &&
self.fragment.style().logical_position().inline_end == LPA_Auto {
self.fragment.style().logical_position().inline_start == LengthOrPercentageOrAuto::Auto &&
self.fragment.style().logical_position().inline_end == LengthOrPercentageOrAuto::Auto {
self.base.position.start.i = inline_position
}
}
fn update_late_computed_block_position_if_necessary(&mut self, block_position: Au) {
if self.base.flags.contains(IS_ABSOLUTELY_POSITIONED) &&
self.fragment.style().logical_position().block_start == LPA_Auto &&
self.fragment.style().logical_position().block_end == LPA_Auto {
self.fragment.style().logical_position().block_start == LengthOrPercentageOrAuto::Auto &&
self.fragment.style().logical_position().block_end == LengthOrPercentageOrAuto::Auto {
self.base.position.start.b = block_position
}
}
@ -1976,11 +1976,11 @@ pub trait ISizeAndMarginsComputer {
let style = block.fragment.style();
match (computed_inline_size, style.get_box().box_sizing) {
(Specified(size), box_sizing::border_box) => {
(MaybeAuto::Specified(size), box_sizing::border_box) => {
computed_inline_size =
Specified(size - block.fragment.border_padding.inline_start_end())
MaybeAuto::Specified(size - block.fragment.border_padding.inline_start_end())
}
(Auto, box_sizing::border_box) | (_, box_sizing::content_box) => {}
(MaybeAuto::Auto, box_sizing::border_box) | (_, box_sizing::content_box) => {}
}
// The text alignment of a block flow is the text alignment of its box's style.
@ -2090,7 +2090,7 @@ pub trait ISizeAndMarginsComputer {
match specified_or_none(block.fragment().style().max_inline_size(),
containing_block_inline_size) {
Some(max_inline_size) if max_inline_size < solution.inline_size => {
input.computed_inline_size = Specified(max_inline_size);
input.computed_inline_size = MaybeAuto::Specified(max_inline_size);
solution = self.solve_inline_size_constraints(block, &input);
}
_ => {}
@ -2102,7 +2102,7 @@ pub trait ISizeAndMarginsComputer {
let computed_min_inline_size = specified(block.fragment().style().min_inline_size(),
containing_block_inline_size);
if computed_min_inline_size > solution.inline_size {
input.computed_inline_size = Specified(computed_min_inline_size);
input.computed_inline_size = MaybeAuto::Specified(computed_min_inline_size);
solution = self.solve_inline_size_constraints(block, &input);
}
@ -2131,13 +2131,13 @@ pub trait ISizeAndMarginsComputer {
// If inline-size is not 'auto', and inline-size + margins > available_inline-size, all
// 'auto' margins are treated as 0.
let (inline_start_margin, inline_end_margin) = match computed_inline_size {
Auto => (inline_start_margin, inline_end_margin),
Specified(inline_size) => {
MaybeAuto::Auto => (inline_start_margin, inline_end_margin),
MaybeAuto::Specified(inline_size) => {
let inline_start = inline_start_margin.specified_or_zero();
let inline_end = inline_end_margin.specified_or_zero();
if (inline_start + inline_end + inline_size) > available_inline_size {
(Specified(inline_start), Specified(inline_end))
(MaybeAuto::Specified(inline_start), MaybeAuto::Specified(inline_end))
} else {
(inline_start_margin, inline_end_margin)
}
@ -2150,31 +2150,31 @@ pub trait ISizeAndMarginsComputer {
match (inline_start_margin, computed_inline_size, inline_end_margin) {
// If all have a computed value other than 'auto', the system is
// over-constrained so we discard the end margin.
(Specified(margin_start), Specified(inline_size), Specified(_margin_end)) =>
(MaybeAuto::Specified(margin_start), MaybeAuto::Specified(inline_size), MaybeAuto::Specified(_margin_end)) =>
(margin_start, inline_size, available_inline_size -
(margin_start + inline_size)),
// If exactly one value is 'auto', solve for it
(Auto, Specified(inline_size), Specified(margin_end)) =>
(MaybeAuto::Auto, MaybeAuto::Specified(inline_size), MaybeAuto::Specified(margin_end)) =>
(available_inline_size - (inline_size + margin_end), inline_size, margin_end),
(Specified(margin_start), Auto, Specified(margin_end)) =>
(MaybeAuto::Specified(margin_start), MaybeAuto::Auto, MaybeAuto::Specified(margin_end)) =>
(margin_start, available_inline_size - (margin_start + margin_end),
margin_end),
(Specified(margin_start), Specified(inline_size), Auto) =>
(MaybeAuto::Specified(margin_start), MaybeAuto::Specified(inline_size), MaybeAuto::Auto) =>
(margin_start, inline_size, available_inline_size -
(margin_start + inline_size)),
// If inline-size is set to 'auto', any other 'auto' value becomes '0',
// and inline-size is solved for
(Auto, Auto, Specified(margin_end)) =>
(MaybeAuto::Auto, MaybeAuto::Auto, MaybeAuto::Specified(margin_end)) =>
(Au::new(0), available_inline_size - margin_end, margin_end),
(Specified(margin_start), Auto, Auto) =>
(MaybeAuto::Specified(margin_start), MaybeAuto::Auto, MaybeAuto::Auto) =>
(margin_start, available_inline_size - margin_start, Au::new(0)),
(Auto, Auto, Auto) =>
(MaybeAuto::Auto, MaybeAuto::Auto, MaybeAuto::Auto) =>
(Au::new(0), available_inline_size, Au::new(0)),
// If inline-start and inline-end margins are auto, they become equal
(Auto, Specified(inline_size), Auto) => {
(MaybeAuto::Auto, MaybeAuto::Specified(inline_size), MaybeAuto::Auto) => {
let margin = (available_inline_size - inline_size).scale_by(0.5);
(margin, inline_size, margin)
}
@ -2229,7 +2229,7 @@ impl ISizeAndMarginsComputer for AbsoluteNonReplaced {
let static_position_inline_start = static_i_offset;
let (inline_start, inline_end, inline_size, margin_inline_start, margin_inline_end) = match (inline_start, inline_end, computed_inline_size) {
(Auto, Auto, Auto) => {
(MaybeAuto::Auto, MaybeAuto::Auto, MaybeAuto::Auto) => {
let margin_start = inline_start_margin.specified_or_zero();
let margin_end = inline_end_margin.specified_or_zero();
let inline_start = static_position_inline_start;
@ -2242,9 +2242,9 @@ impl ISizeAndMarginsComputer for AbsoluteNonReplaced {
let sum = inline_start + inline_size + margin_start + margin_end;
(inline_start, available_inline_size - sum, inline_size, margin_start, margin_end)
}
(Specified(inline_start), Specified(inline_end), Specified(inline_size)) => {
(MaybeAuto::Specified(inline_start), MaybeAuto::Specified(inline_end), MaybeAuto::Specified(inline_size)) => {
match (inline_start_margin, inline_end_margin) {
(Auto, Auto) => {
(MaybeAuto::Auto, MaybeAuto::Auto) => {
let total_margin_val = available_inline_size - inline_start - inline_end - inline_size;
if total_margin_val < Au(0) {
// margin-inline-start becomes 0 because direction is 'ltr'.
@ -2257,15 +2257,15 @@ impl ISizeAndMarginsComputer for AbsoluteNonReplaced {
total_margin_val.scale_by(0.5))
}
}
(Specified(margin_start), Auto) => {
(MaybeAuto::Specified(margin_start), MaybeAuto::Auto) => {
let sum = inline_start + inline_end + inline_size + margin_start;
(inline_start, inline_end, inline_size, margin_start, available_inline_size - sum)
}
(Auto, Specified(margin_end)) => {
(MaybeAuto::Auto, MaybeAuto::Specified(margin_end)) => {
let sum = inline_start + inline_end + inline_size + margin_end;
(inline_start, inline_end, inline_size, available_inline_size - sum, margin_end)
}
(Specified(margin_start), Specified(margin_end)) => {
(MaybeAuto::Specified(margin_start), MaybeAuto::Specified(margin_end)) => {
// Values are over-constrained.
// Ignore value for 'inline-end' cos direction is 'ltr'.
// TODO: Handle 'rtl' when it is implemented.
@ -2277,19 +2277,19 @@ impl ISizeAndMarginsComputer for AbsoluteNonReplaced {
// For the rest of the cases, auto values for margin are set to 0
// If only one is Auto, solve for it
(Auto, Specified(inline_end), Specified(inline_size)) => {
(MaybeAuto::Auto, MaybeAuto::Specified(inline_end), MaybeAuto::Specified(inline_size)) => {
let margin_start = inline_start_margin.specified_or_zero();
let margin_end = inline_end_margin.specified_or_zero();
let sum = inline_end + inline_size + margin_start + margin_end;
(available_inline_size - sum, inline_end, inline_size, margin_start, margin_end)
}
(Specified(inline_start), Auto, Specified(inline_size)) => {
(MaybeAuto::Specified(inline_start), MaybeAuto::Auto, MaybeAuto::Specified(inline_size)) => {
let margin_start = inline_start_margin.specified_or_zero();
let margin_end = inline_end_margin.specified_or_zero();
let sum = inline_start + inline_size + margin_start + margin_end;
(inline_start, available_inline_size - sum, inline_size, margin_start, margin_end)
}
(Specified(inline_start), Specified(inline_end), Auto) => {
(MaybeAuto::Specified(inline_start), MaybeAuto::Specified(inline_end), MaybeAuto::Auto) => {
let margin_start = inline_start_margin.specified_or_zero();
let margin_end = inline_end_margin.specified_or_zero();
let sum = inline_start + inline_end + margin_start + margin_end;
@ -2298,7 +2298,7 @@ impl ISizeAndMarginsComputer for AbsoluteNonReplaced {
// If inline-size is auto, then inline-size is shrink-to-fit. Solve for the
// non-auto value.
(Specified(inline_start), Auto, Auto) => {
(MaybeAuto::Specified(inline_start), MaybeAuto::Auto, MaybeAuto::Auto) => {
let margin_start = inline_start_margin.specified_or_zero();
let margin_end = inline_end_margin.specified_or_zero();
// Set inline-end to zero to calculate inline-size
@ -2307,7 +2307,7 @@ impl ISizeAndMarginsComputer for AbsoluteNonReplaced {
let sum = inline_start + inline_size + margin_start + margin_end;
(inline_start, available_inline_size - sum, inline_size, margin_start, margin_end)
}
(Auto, Specified(inline_end), Auto) => {
(MaybeAuto::Auto, MaybeAuto::Specified(inline_end), MaybeAuto::Auto) => {
let margin_start = inline_start_margin.specified_or_zero();
let margin_end = inline_end_margin.specified_or_zero();
// Set inline-start to zero to calculate inline-size
@ -2317,7 +2317,7 @@ impl ISizeAndMarginsComputer for AbsoluteNonReplaced {
(available_inline_size - sum, inline_end, inline_size, margin_start, margin_end)
}
(Auto, Auto, Specified(inline_size)) => {
(MaybeAuto::Auto, MaybeAuto::Auto, MaybeAuto::Specified(inline_size)) => {
let margin_start = inline_start_margin.specified_or_zero();
let margin_end = inline_end_margin.specified_or_zero();
// Setting 'inline-start' to static position because direction is 'ltr'.
@ -2374,7 +2374,7 @@ impl ISizeAndMarginsComputer for AbsoluteReplaced {
// TODO: Handle all the cases for 'rtl' direction.
let inline_size = match computed_inline_size {
Specified(w) => w,
MaybeAuto::Specified(w) => w,
_ => panic!("{} {}",
"The used value for inline_size for absolute replaced flow",
"should have already been calculated by now.")
@ -2386,7 +2386,7 @@ impl ISizeAndMarginsComputer for AbsoluteReplaced {
let static_position_inline_start = static_i_offset;
let (inline_start, inline_end, inline_size, margin_inline_start, margin_inline_end) = match (inline_start, inline_end) {
(Auto, Auto) => {
(MaybeAuto::Auto, MaybeAuto::Auto) => {
let inline_start = static_position_inline_start;
let margin_start = inline_start_margin.specified_or_zero();
let margin_end = inline_end_margin.specified_or_zero();
@ -2394,21 +2394,21 @@ impl ISizeAndMarginsComputer for AbsoluteReplaced {
(inline_start, available_inline_size - sum, inline_size, margin_start, margin_end)
}
// If only one is Auto, solve for it
(Auto, Specified(inline_end)) => {
(MaybeAuto::Auto, MaybeAuto::Specified(inline_end)) => {
let margin_start = inline_start_margin.specified_or_zero();
let margin_end = inline_end_margin.specified_or_zero();
let sum = inline_end + inline_size + margin_start + margin_end;
(available_inline_size - sum, inline_end, inline_size, margin_start, margin_end)
}
(Specified(inline_start), Auto) => {
(MaybeAuto::Specified(inline_start), MaybeAuto::Auto) => {
let margin_start = inline_start_margin.specified_or_zero();
let margin_end = inline_end_margin.specified_or_zero();
let sum = inline_start + inline_size + margin_start + margin_end;
(inline_start, available_inline_size - sum, inline_size, margin_start, margin_end)
}
(Specified(inline_start), Specified(inline_end)) => {
(MaybeAuto::Specified(inline_start), MaybeAuto::Specified(inline_end)) => {
match (inline_start_margin, inline_end_margin) {
(Auto, Auto) => {
(MaybeAuto::Auto, MaybeAuto::Auto) => {
let total_margin_val = available_inline_size - inline_start - inline_end - inline_size;
if total_margin_val < Au(0) {
// margin-inline-start becomes 0 because direction is 'ltr'.
@ -2420,15 +2420,15 @@ impl ISizeAndMarginsComputer for AbsoluteReplaced {
total_margin_val.scale_by(0.5))
}
}
(Specified(margin_start), Auto) => {
(MaybeAuto::Specified(margin_start), MaybeAuto::Auto) => {
let sum = inline_start + inline_end + inline_size + margin_start;
(inline_start, inline_end, inline_size, margin_start, available_inline_size - sum)
}
(Auto, Specified(margin_end)) => {
(MaybeAuto::Auto, MaybeAuto::Specified(margin_end)) => {
let sum = inline_start + inline_end + inline_size + margin_end;
(inline_start, inline_end, inline_size, available_inline_size - sum, margin_end)
}
(Specified(margin_start), Specified(margin_end)) => {
(MaybeAuto::Specified(margin_start), MaybeAuto::Specified(margin_end)) => {
// Values are over-constrained.
// Ignore value for 'inline-end' cos direction is 'ltr'.
let sum = inline_start + inline_size + margin_start + margin_end;
@ -2452,7 +2452,7 @@ impl ISizeAndMarginsComputer for AbsoluteReplaced {
fragment.assign_replaced_inline_size_if_necessary(containing_block_inline_size);
// For replaced absolute flow, the rest of the constraint solving will
// take inline-size to be specified as the value computed here.
Specified(fragment.content_inline_size())
MaybeAuto::Specified(fragment.content_inline_size())
}
fn containing_block_inline_size(&self, block: &mut BlockFlow, _: Au, ctx: &LayoutContext) -> Au {
@ -2485,8 +2485,8 @@ impl ISizeAndMarginsComputer for BlockReplaced {
input: &ISizeConstraintInput)
-> ISizeConstraintSolution {
match input.computed_inline_size {
Specified(_) => {},
Auto => panic!("BlockReplaced: inline_size should have been computed by now")
MaybeAuto::Specified(_) => {},
MaybeAuto::Auto => panic!("BlockReplaced: inline_size should have been computed by now")
};
self.solve_block_inline_size_constraints(block, input)
}
@ -2501,7 +2501,7 @@ impl ISizeAndMarginsComputer for BlockReplaced {
fragment.assign_replaced_inline_size_if_necessary(parent_flow_inline_size);
// For replaced block flow, the rest of the constraint solving will
// take inline-size to be specified as the value computed here.
Specified(fragment.content_inline_size())
MaybeAuto::Specified(fragment.content_inline_size())
}
}
@ -2540,8 +2540,8 @@ impl ISizeAndMarginsComputer for FloatReplaced {
let margin_inline_start = inline_start_margin.specified_or_zero();
let margin_inline_end = inline_end_margin.specified_or_zero();
let inline_size = match computed_inline_size {
Specified(w) => w,
Auto => panic!("FloatReplaced: inline_size should have been computed by now")
MaybeAuto::Specified(w) => w,
MaybeAuto::Auto => panic!("FloatReplaced: inline_size should have been computed by now")
};
debug!("assign_inline_sizes_float -- inline_size: {}", inline_size);
ISizeConstraintSolution::new(inline_size, margin_inline_start, margin_inline_end)
@ -2557,7 +2557,7 @@ impl ISizeAndMarginsComputer for FloatReplaced {
fragment.assign_replaced_inline_size_if_necessary(parent_flow_inline_size);
// For replaced block flow, the rest of the constraint solving will
// take inline-size to be specified as the value computed here.
Specified(fragment.content_inline_size())
MaybeAuto::Specified(fragment.content_inline_size())
}
}