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osc: extend damage-cells-by-color to default fg/bg as well

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When changing part of the color palette, through either OSC-4, or
OSC-10 and OSC-11 (and the corresponding reset OSCs: 104, 110 and
111), only dirty affected cells.

We've always done this, but only for OSC-4.

This patch breaks out that logic, and extends it to handle default
fg/bg too.

It also fixes a bug where cells with colored underlines were not
dirtied if the underline was the only part of the cell that was
affected by a OSC-4 change.
This commit is contained in:
Daniel Eklöf 2024-07-03 10:53:33 +02:00
parent e5ed387426
commit 22c8637610
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GPG key ID: 5BBD4992C116573F
4 changed files with 102 additions and 51 deletions
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6
csi.c
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@ -2098,8 +2098,10 @@ csi_dispatch(struct terminal *term, uint8_t final)
sizeof(term->colors));
term->color_stack.idx = slot - 1;
/* TODO: we _could_ iterate all cells and only dirty
those that are affected by the palette change... */
/* Assume a full palette switch *will* affect almost
all cells. The alternative is to call
term_damage_color() for all 256 palette entries
*and* the default fg/bg (256 + 2 calls in total) */
term_damage_view(term);
term_damage_margins(term);
} else if (slot == 0) {