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main: Support overline, SGR 53/55

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Similar to the underline, incl. the *-thickness and *-offset options.
This commit is contained in:
Andrew Savchenko 2026-01-02 13:37:26 +11:00
parent 42e04c5c87
commit 33106514db
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GPG key ID: 5023209D10DBA986
7 changed files with 70 additions and 2 deletions
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24
render.c
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@ -598,6 +598,27 @@ draw_strikeout(const struct terminal *term, pixman_image_t *pix,
cols * term->cell_width, thickness});
}
static void
draw_overline(const struct terminal *term, pixman_image_t *pix,
const struct fcft_font *font,
const pixman_color_t *color, int x, int y, int cols)
{
const int thickness = term->conf->overline_thickness.px >= 0
? term_pt_or_px_as_pixels(
term, &term->conf->overline_thickness)
: font->underline.thickness;
const int offset = term->conf->overline_offset.px >= 0
? term_pt_or_px_as_pixels(
term, &term->conf->overline_offset)
: 0;
pixman_image_fill_rectangles(
PIXMAN_OP_SRC, pix, color,
1, &(pixman_rectangle16_t){
x, y + offset, cols * term->cell_width, thickness});
}
static void
cursor_colors_for_cell(const struct terminal *term, const struct cell *cell,
const pixman_color_t *fg, const pixman_color_t *bg,
@ -1173,6 +1194,9 @@ render_cell(struct terminal *term, pixman_image_t *pix,
if (cell->attrs.strikethrough)
draw_strikeout(term, pix, font, &fg, x, y, cell_cols);
if (cell->attrs.overline)
draw_overline(term, pix, font, &fg, x, y, cell_cols);
if (unlikely(cell->attrs.url)) {
pixman_color_t url_color = color_hex_to_pixman(
term->conf->colors_dark.use_custom.url