mirror of
https://github.com/FliegendeWurst/cursive.git
synced 2024-11-10 03:10:41 +00:00
Move show_spaces
option to spans::LinesIterator
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parent
2760e92ce6
commit
d0a186d01e
@ -1,6 +1,4 @@
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use super::{prefix, Row};
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use unicode_segmentation::UnicodeSegmentation;
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use unicode_width::UnicodeWidthStr;
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use super::Row;
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use utils::lines::spans;
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use utils::span::{IndexedSpan, SpannedText};
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@ -13,10 +11,6 @@ pub struct LinesIterator<'a> {
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/// Available width. Don't output lines wider than that.
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width: usize,
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/// If `true`, keep a blank cell at the end of lines
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/// when a whitespace or newline should be.
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show_spaces: bool,
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}
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struct DummySpannedText<'a> {
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@ -50,21 +44,17 @@ impl<'a> LinesIterator<'a> {
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pub fn new(content: &'a str, width: usize) -> Self {
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let iter =
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spans::LinesIterator::new(DummySpannedText::new(content), width);
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let show_spaces = false;
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LinesIterator {
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iter,
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width,
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show_spaces,
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}
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LinesIterator { iter, width }
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}
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/// Leave a blank cell at the end of lines.
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///
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/// Unless a word had to be truncated, in which case
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/// it takes the entire width.
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pub fn show_spaces(mut self) -> Self {
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self.show_spaces = true;
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self
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pub fn show_spaces(self) -> Self {
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let iter = self.iter.show_spaces();
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let width = self.width;
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LinesIterator { iter, width }
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}
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}
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@ -2,7 +2,7 @@ use super::chunk::{Chunk, ChunkPart};
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use super::chunk_iterator::ChunkIterator;
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use super::prefix::prefix;
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use super::row::Row;
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use super::segment::{Segment};
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use super::segment::Segment;
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use super::segment_merge_iterator::SegmentMergeIterator;
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use std::iter::Peekable;
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use std::rc::Rc;
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@ -26,6 +26,10 @@ where
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/// If a chunk wouldn't fit, we had to cut it in pieces.
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/// This is how far in the current chunk we are.
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chunk_offset: ChunkPart,
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/// If `true`, keep a blank cell at the end of lines
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/// when a whitespace or newline should be.
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show_spaces: bool,
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}
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impl<S> LinesIterator<S>
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@ -41,8 +45,18 @@ where
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source,
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width,
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chunk_offset: ChunkPart::default(),
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show_spaces: false,
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}
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}
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/// Leave a blank cell at the end of lines.
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///
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/// Unless a word had to be truncated, in which case
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/// it can take the entire width.
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pub fn show_spaces(mut self) -> Self {
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self.show_spaces = true;
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self
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}
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}
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impl<S> Iterator for LinesIterator<S>
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@ -53,9 +67,17 @@ where
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fn next(&mut self) -> Option<Row> {
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// Let's build a beautiful row.
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let allowed_width = if self.show_spaces {
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// Remove 1 from the available space, if possible.
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// But only for regular words.
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// If we have to split a chunk, forget about that.
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self.width.saturating_sub(1)
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} else {
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self.width
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};
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let mut chunks =
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prefix(&mut self.iter, self.width, &mut self.chunk_offset);
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prefix(&mut self.iter, allowed_width, &mut self.chunk_offset);
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if chunks.is_empty() {
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// Desperate action to make something fit:
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@ -71,31 +93,32 @@ where
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// Try to fit part of it?
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let source = self.source.as_ref();
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let graphemes = chunk.segments.iter().flat_map(move |seg| {
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let mut offset = seg.start;
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let graphemes =
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chunk.segments.iter().flat_map(move |seg| {
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let mut offset = seg.start;
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let text = seg.resolve_plain(source);
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let text = seg.resolve_plain(source);
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text.graphemes(true).map(move |g| {
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let width = g.width();
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let start = offset;
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let end = offset + g.len();
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offset = end;
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Chunk {
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width,
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segments: vec![
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Segment {
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width,
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span_id: seg.span_id,
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start,
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end,
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},
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],
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hard_stop: false,
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ends_with_space: false,
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}
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})
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});
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text.graphemes(true).map(move |g| {
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let width = g.width();
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let start = offset;
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let end = offset + g.len();
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offset = end;
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Chunk {
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width,
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segments: vec![
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Segment {
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width,
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span_id: seg.span_id,
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start,
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end,
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},
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],
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hard_stop: false,
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ends_with_space: false,
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}
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})
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});
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chunks = prefix(
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&mut graphemes.peekable(),
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self.width,
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