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Auto merge of #10176 - mbrubeck:selection-range, r=pcwalton

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Highlight selected text in input fields

Fixes #9993.  This does not yet allow stylesheets to set the selection colors; instead it uses a hard-coded orange background and white foreground.

r? @pcwalton

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This commit is contained in:
bors-servo 2016-03-26 08:16:20 +05:30
commit bed91b3334
17 changed files with 264 additions and 77 deletions
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62
components/layout/fragment.rs
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@ -655,8 +655,6 @@ pub struct ScannedTextFragmentInfo {
pub content_size: LogicalSize<Au>,
/// The position of the insertion point in characters, if any.
///
/// TODO(pcwalton): Make this a range.
pub insertion_point: Option<CharIndex>,
/// The range within the above text run that this represents.
@ -667,9 +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 {
@ -677,19 +684,26 @@ impl ScannedTextFragmentInfo {
pub fn new(run: Arc<TextRun>,
range: Range<CharIndex>,
content_size: LogicalSize<Au>,
insertion_point: &Option<CharIndex>,
requires_line_break_afterward_if_wrapping_on_newlines: bool)
insertion_point: Option<CharIndex>,
flags: ScannedTextFlags)
-> ScannedTextFragmentInfo {
ScannedTextFragmentInfo {
run: run,
range: range,
insertion_point: *insertion_point,
insertion_point: insertion_point,
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
@ -737,19 +751,17 @@ pub struct UnscannedTextFragmentInfo {
/// The text inside the fragment.
pub text: Box<str>,
/// The position of the insertion point, if any.
///
/// TODO(pcwalton): Make this a range.
pub insertion_point: Option<CharIndex>,
/// The selected text range. An empty range represents the insertion point.
pub selection: Option<Range<CharIndex>>,
}
impl UnscannedTextFragmentInfo {
/// Creates a new instance of `UnscannedTextFragmentInfo` from the given text.
#[inline]
pub fn new(text: String, insertion_point: Option<CharIndex>) -> UnscannedTextFragmentInfo {
pub fn new(text: String, selection: Option<Range<CharIndex>>) -> UnscannedTextFragmentInfo {
UnscannedTextFragmentInfo {
text: text.into_boxed_str(),
insertion_point: insertion_point,
selection: selection,
}
}
}
@ -865,15 +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,
requires_line_break_afterward_if_wrapping_on_newlines);
None,
flags);
self.transform(size, SpecificFragmentInfo::ScannedText(info))
}
@ -1681,9 +1695,9 @@ 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();
@ -2247,7 +2261,7 @@ 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,
}