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Convert ScannedTextFragment fields into bitflags

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This commit is contained in:
Matt Brubeck 2016-03-24 16:06:12 -07:00
parent 6171000875
commit 08caf7412f
4 changed files with 45 additions and 25 deletions
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50
components/layout/fragment.rs
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@ -657,9 +657,6 @@ pub struct ScannedTextFragmentInfo {
/// The position of the insertion point in characters, if any.
pub insertion_point: Option<CharIndex>,
/// Is this fragment selected?
pub selected: bool,
/// The range within the above text run that this represents.
pub range: Range<CharIndex>,
@ -668,9 +665,18 @@ pub struct ScannedTextFragmentInfo {
/// performing incremental reflow.
pub range_end_including_stripped_whitespace: CharIndex,
/// Whether a line break is required after this fragment if wrapping on newlines (e.g. if
/// `white-space: pre` is in effect).
pub requires_line_break_afterward_if_wrapping_on_newlines: bool,
pub flags: ScannedTextFlags,
}
bitflags! {
flags ScannedTextFlags: u8 {
/// Whether a line break is required after this fragment if wrapping on newlines (e.g. if
/// `white-space: pre` is in effect).
const REQUIRES_LINE_BREAK_AFTERWARD_IF_WRAPPING_ON_NEWLINES = 0x01,
/// Is this fragment selected?
const SELECTED = 0x02,
}
}
impl ScannedTextFragmentInfo {
@ -679,20 +685,25 @@ impl ScannedTextFragmentInfo {
range: Range<CharIndex>,
content_size: LogicalSize<Au>,
insertion_point: Option<CharIndex>,
selected: bool,
requires_line_break_afterward_if_wrapping_on_newlines: bool)
flags: ScannedTextFlags)
-> ScannedTextFragmentInfo {
ScannedTextFragmentInfo {
run: run,
range: range,
insertion_point: insertion_point,
selected: selected,
content_size: content_size,
range_end_including_stripped_whitespace: range.end(),
requires_line_break_afterward_if_wrapping_on_newlines:
requires_line_break_afterward_if_wrapping_on_newlines,
flags: flags,
}
}
pub fn requires_line_break_afterward_if_wrapping_on_newlines(&self) -> bool {
self.flags.contains(REQUIRES_LINE_BREAK_AFTERWARD_IF_WRAPPING_ON_NEWLINES)
}
pub fn selected(&self) -> bool {
self.flags.contains(SELECTED)
}
}
/// Describes how to split a fragment. This is used during line breaking as part of the return
@ -866,16 +877,17 @@ impl Fragment {
let size = LogicalSize::new(self.style.writing_mode,
split.inline_size,
self.border_box.size.block);
let requires_line_break_afterward_if_wrapping_on_newlines =
self.requires_line_break_afterward_if_wrapping_on_newlines();
let flags = match self.specific {
SpecificFragmentInfo::ScannedText(ref info) => info.flags,
_ => ScannedTextFlags::empty()
};
// FIXME(pcwalton): This should modify the insertion point as necessary.
let info = box ScannedTextFragmentInfo::new(
text_run,
split.range,
size,
None,
false,
requires_line_break_afterward_if_wrapping_on_newlines);
flags);
self.transform(size, SpecificFragmentInfo::ScannedText(info))
}
@ -1665,9 +1677,9 @@ impl Fragment {
this_info.range.extend_to(other_info.range_end_including_stripped_whitespace);
this_info.content_size.inline =
this_info.run.metrics_for_range(&this_info.range).advance_width;
this_info.requires_line_break_afterward_if_wrapping_on_newlines =
this_info.requires_line_break_afterward_if_wrapping_on_newlines ||
other_info.requires_line_break_afterward_if_wrapping_on_newlines;
if other_info.requires_line_break_afterward_if_wrapping_on_newlines() {
this_info.flags.insert(REQUIRES_LINE_BREAK_AFTERWARD_IF_WRAPPING_ON_NEWLINES);
}
self.border_padding.inline_end = next_fragment.border_padding.inline_end;
self.border_box.size.inline = this_info.content_size.inline +
self.border_padding.inline_start_end();
@ -2231,7 +2243,7 @@ impl Fragment {
pub fn requires_line_break_afterward_if_wrapping_on_newlines(&self) -> bool {
match self.specific {
SpecificFragmentInfo::ScannedText(ref scanned_text) => {
scanned_text.requires_line_break_afterward_if_wrapping_on_newlines
scanned_text.requires_line_break_afterward_if_wrapping_on_newlines()
}
_ => false,
}