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render: implement strikeout

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Daniel Eklöf 2019-07-16 15:08:02 +02:00
parent d93ca2f654
commit 06f9495ae2
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3 changed files with 45 additions and 4 deletions
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20
render.c
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@ -134,13 +134,27 @@ render_cell(struct terminal *term, struct buffer *buf, const struct cell *cell,
/* Underline */
if (cell->attrs.underline) {
const struct font *font = attrs_to_font(term, &cell->attrs);
double baseline = y + term->fextents.height - term->fextents.descent;
double width = font->underline.thickness;
double y_under = y + term->cell_height + font->underline.position + width / 2.;
double y_under = baseline - font->underline.position - width / 2.;
cairo_set_source_rgb(buf->cairo, foreground.r, foreground.g, foreground.b);
cairo_set_line_width(buf->cairo, width);
cairo_move_to(buf->cairo, x, y_under);
cairo_line_to(buf->cairo, x + term->cell_width, y_under);
cairo_move_to(buf->cairo, x, round(y_under) + 0.5);
cairo_line_to(buf->cairo, x + term->cell_width, round(y_under) + 0.5);
cairo_stroke(buf->cairo);
}
if (cell->attrs.strikethrough) {
const struct font *font = attrs_to_font(term, &cell->attrs);
double baseline = y + term->fextents.height - term->fextents.descent;
double width = font->strikeout.thickness;
double y_strike = baseline - font->strikeout.position - width / 2.;
cairo_set_source_rgb(buf->cairo, foreground.r, foreground.g, foreground.b);
cairo_set_line_width(buf->cairo, width);
cairo_move_to(buf->cairo, x, round(y_strike) + 0.5);
cairo_line_to(buf->cairo, x + term->cell_width, round(y_strike) + 0.5);
cairo_stroke(buf->cairo);
}