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Properly respect the text valign, by individually aligning glyphs

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This commit is contained in:
Emil Ernerfeldt
2024-09-17 10:44:15 +02:00
parent 74b8d669c0
commit 51333c265b
1 changed files with 9 additions and 20 deletions
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29
crates/epaint/src/text/text_layout.rs
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@@ -585,40 +585,29 @@ fn galley_from_rows(
let mut min_x: f32 = 0.0;
let mut max_x: f32 = 0.0;
for row in &mut rows {
let mut line_height = first_row_min_height.max(row.rect.height());
let mut row_ascent = 0.0f32;
let mut row_height = first_row_min_height.max(row.rect.height());
first_row_min_height = 0.0;
// take metrics from the highest font in this row
if let Some(glyph) = row
.glyphs
.iter()
.max_by(|a, b| a.size.y.partial_cmp(&b.size.y).unwrap())
{
line_height = glyph.size.y;
row_ascent = glyph.ascent;
for glyph in &row.glyphs {
row_height = row_height.max(glyph.size.y);
}
line_height = point_scale.round_to_pixel(line_height);
row_height = point_scale.round_to_pixel(row_height);
// Now positions each glyph:
for glyph in &mut row.glyphs {
let format = &job.sections[glyph.section_index as usize].format;
let align_offset = match format.valign {
Align::Center | Align::Max => row_ascent,
glyph.pos.y =
cursor_y + glyph.ascent + format.valign.to_factor() * (row_height - glyph.size.y);
// raised text.
Align::Min => glyph.ascent,
};
glyph.pos.y = cursor_y + align_offset;
glyph.pos.y = point_scale.round_to_pixel(glyph.pos.y);
}
row.rect.min.y = cursor_y;
row.rect.max.y = cursor_y + line_height;
row.rect.max.y = cursor_y + row_height;
min_x = min_x.min(row.rect.min.x);
max_x = max_x.max(row.rect.max.x);
cursor_y += line_height;
cursor_y += row_height;
cursor_y = point_scale.round_to_pixel(cursor_y);
}