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fix gaps in multi-cell ligatured glyphs

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refs: https://github.com/wez/wezterm/issues/614
This commit is contained in:
Wez Furlong 2021-04-10 13:59:59 -07:00
parent 39856e4d8a
commit 180f125830
1 changed files with 12 additions and 1 deletions
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13
wezterm-gui/src/termwindow/render.rs
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@ -839,6 +839,9 @@ impl super::TermWindow {
- (glyph.y_offset + glyph.bearing_y))
.get() as f32;
// We use this to remember the `left` offset value to use for glyph_idx > 0
let mut slice_left = 0.;
// Iterate each cell that comprises this glyph. There is usually
// a single cell per glyph but combining characters, ligatures
// and emoji can be 2 or more cells wide.
@ -927,12 +930,20 @@ impl super::TermWindow {
let pixel_rect = slice.pixel_rect(texture);
let texture_rect = texture.texture.to_texture_coords(pixel_rect);
let left = if glyph_idx == 0 { left } else { 0.0 };
let left = if glyph_idx == 0 { left } else { slice_left };
let bottom = (pixel_rect.size.height as f32 * glyph.scale as f32) + top
- self.render_metrics.cell_size.height as f32;
let right = pixel_rect.size.width as f32 + left
- self.render_metrics.cell_size.width as f32;
// Save the `right` position; we'll use it for the `left` adjust for
// the next slice that comprises this glyph.
// This is important because some glyphs (eg: 현재 브랜치) can have
// fractional advance/offset positions that leave one half slightly
// out of alignment with the other if we were to simply force the
// `left` value to be 0 when glyph_idx > 0.
slice_left = right;
let mut quad = match quads
.cell(cell_idx + params.pos.left, params.line_idx + params.pos.top)
{