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Make text-align: justify incremental layout safe

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This commit is contained in:
Ulf Nilsson 2016-05-08 18:38:09 +02:00
parent da85439093
commit 0f983cd11f
7 changed files with 97 additions and 92 deletions
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6
components/gfx/text/text_run.rs
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@ -33,6 +33,7 @@ pub struct TextRun {
/// The glyph runs that make up this text run.
pub glyphs: Arc<Vec<GlyphRun>>,
pub bidi_level: u8,
pub extra_word_spacing: Au,
}
impl Drop for TextRun {
@ -188,6 +189,7 @@ impl<'a> TextRun {
actual_pt_size: font.actual_pt_size,
glyphs: Arc::new(glyphs),
bidi_level: bidi_level,
extra_word_spacing: Au(0),
}
}
@ -247,7 +249,7 @@ impl<'a> TextRun {
// TODO(Issue #98): using inter-char and inter-word spacing settings when measuring text
self.natural_word_slices_in_range(range)
.fold(Au(0), |advance, slice| {
advance + slice.glyphs.advance_for_byte_range(&slice.range)
advance + slice.glyphs.advance_for_byte_range(&slice.range, self.extra_word_spacing)
})
}
@ -259,7 +261,7 @@ impl<'a> TextRun {
pub fn metrics_for_slice(&self, glyphs: &GlyphStore, slice_range: &Range<ByteIndex>)
-> RunMetrics {
RunMetrics::new(glyphs.advance_for_byte_range(slice_range),
RunMetrics::new(glyphs.advance_for_byte_range(slice_range, self.extra_word_spacing),
self.font_metrics.ascent,
self.font_metrics.descent)
}