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Fix palette escape sequences sometimes not working.

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If a batch of palette changes were seen in between window updates, only
the last one would take immediate effect.

(cherry-picked from commit 5677da6481)
This commit is contained in:
Jacob Nevins 2021-06-13 00:18:42 +01:00
parent 8f3a0ea69f
commit 746d87fc6f
1 changed files with 18 additions and 4 deletions
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22
terminal.c
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@ -1815,6 +1815,16 @@ static void palette_rebuild(Terminal *term)
{
unsigned min_changed = OSC4_NCOLOURS, max_changed = 0;
if (term->win_palette_pending) {
/* Possibly extend existing range. */
min_changed = term->win_palette_pending_min;
max_changed = term->win_palette_pending_limit - 1;
} else {
/* Start with empty range. */
min_changed = OSC4_NCOLOURS;
max_changed = 0;
}
for (unsigned i = 0; i < OSC4_NCOLOURS; i++) {
rgb new_value;
bool found = false;
@ -1842,10 +1852,14 @@ static void palette_rebuild(Terminal *term)
if (min_changed <= max_changed) {
/*
* At least one colour changed, so schedule a redraw event to
* pass the result back to the TermWin. This also requires
* invalidating the rest of the window, because usually all
* the text will need redrawing in the new colours.
* At least one colour changed (or we had an update scheduled
* already). Schedule a redraw event to pass the result back
* to the TermWin. This also requires invalidating the rest
* of the window, because usually all the text will need
* redrawing in the new colours.
* (If there was an update pending and this palette rebuild
* didn't actually change anything, we'll harmlessly reinforce
* the existing update request.)
*/
term->win_palette_pending = true;
term->win_palette_pending_min = min_changed;