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term: performance: use a bitfield to track which ascii printer to use

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The things affecting which ASCII printer we use have grown...

Instead of checking everything inside term_update_ascii_printer(), use
a bitfield.

Anything affecting the printer used, must now set a bit in this
bitfield. This makes term_update_ascii_printer() much faster, since
all it needs to do is check if the bitfield is zero or not.
This commit is contained in:
Daniel Eklöf 2024-06-24 01:26:57 +02:00
parent 22302d8bcc
commit 48cf57818d
No known key found for this signature in database
GPG key ID: 5BBD4992C116573F
5 changed files with 63 additions and 13 deletions
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11
sixel.c
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@ -420,6 +420,8 @@ sixel_scroll_up(struct terminal *term, int rows)
}
}
term->bits_affecting_ascii_printer.sixels =
tll_length(term->grid->sixel_images) > 0;
term_update_ascii_printer(term);
verify_sixels(term);
}
@ -444,6 +446,8 @@ sixel_scroll_down(struct terminal *term, int rows)
break;
}
term->bits_affecting_ascii_printer.sixels =
tll_length(term->grid->sixel_images) > 0;
term_update_ascii_printer(term);
verify_sixels(term);
}
@ -852,6 +856,8 @@ sixel_overwrite_by_rectangle(
} else
_sixel_overwrite_by_rectangle(term, start, col, height, width, NULL, NULL);
term->bits_affecting_ascii_printer.sixels =
tll_length(term->grid->sixel_images) > 0;
term_update_ascii_printer(term);
}
@ -908,6 +914,8 @@ sixel_overwrite_by_row(struct terminal *term, int _row, int col, int width)
}
}
term->bits_affecting_ascii_printer.sixels =
tll_length(term->grid->sixel_images) > 0;
term_update_ascii_printer(term);
}
@ -1387,6 +1395,9 @@ sixel_unhook(struct terminal *term)
LOG_DBG("you now have %zu sixels in current grid",
tll_length(term->grid->sixel_images));
term->bits_affecting_ascii_printer.sixels =
tll_length(term->grid->sixel_images) > 0;
term_update_ascii_printer(term);
render_refresh(term);
}