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sixel: wip: split up image being overwritten, rather than erasing it

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Instead of completely erasing a sixel image when it is being
"overwritten" (text is printed somewhere within the image, or another
sixel image is emitted within the first image), split it up into up to
four pieces: 'above', 'below', 'to-the-left' and 'to-the-right'.

This is currently very un-optimized, but seems to produce correct
results.
This commit is contained in:
Daniel Eklöf 2020-06-23 21:07:12 +02:00
parent bae11000cc
commit bc82d4ee28
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GPG key ID: 5BBD4992C116573F
3 changed files with 142 additions and 2 deletions
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3
terminal.c
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@ -2381,7 +2381,8 @@ term_print(struct terminal *term, wchar_t wc, int width)
print_linewrap(term);
print_insert(term, width);
sixel_delete_at_cursor(term);
//sixel_delete_at_cursor(term);
sixel_split_at_cursor(term);
/* *Must* get current cell *after* linewrap+insert */
struct row *row = term->grid->cur_row;