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grid: reflow: re-insert sixels *after* new grid offset has been set

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Also make sure to destroy sixels that are too big to fit in the scrollback.

Fixes issues with the sixel list not being sorted correctly.
This commit is contained in:
Daniel Eklöf 2020-10-03 23:00:34 +02:00
parent 5a6b96817d
commit 323119a645
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GPG key ID: 5BBD4992C116573F
1 changed files with 51 additions and 40 deletions
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91
grid.c
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@ -83,9 +83,10 @@ grid_reflow(struct grid *grid, int new_rows, int new_cols,
* at the output that is *oldest* */
int offset = grid->offset + old_screen_rows;
tll(struct sixel) old_sixels = tll_init();
tll(struct sixel) untranslated_sixels = tll_init();
tll(struct sixel) translated_sixels = tll_init();
tll_foreach(grid->sixel_images, it)
tll_push_back(old_sixels, it->item);
tll_push_back(untranslated_sixels, it->item);
tll_free(grid->sixel_images);
/* Turn cursor coordinates into grid absolute coordinates */
@ -108,7 +109,6 @@ grid_reflow(struct grid *grid, int new_rows, int new_cols,
for (size_t i = 0; i < tracking_points_count; i++)
tll_push_back(tracking_points, _tracking_points[i]);
/*
* Walk the old grid
*/
@ -122,7 +122,7 @@ grid_reflow(struct grid *grid, int new_rows, int new_cols,
continue;
/* Map sixels on current "old" row to current "new row" */
tll_foreach(old_sixels, it) {
tll_foreach(untranslated_sixels, it) {
if (it->item.pos.row != old_row_idx)
continue;
@ -131,47 +131,17 @@ grid_reflow(struct grid *grid, int new_rows, int new_cols,
/* Make sure it doesn't cross the wrap-around after being re-based */
int end = (sixel.pos.row + sixel.rows - 1) & (new_rows - 1);
if (end < sixel.pos.row) {
/* TODO: split instead of destroying */
sixel_destroy(&it->item);
} else {
/* Insert sixel into the *sorted* list. */
/* Based on rebase_row() in sixel.c */
/* Uses 'old' offset to ensure old sixels are treated as such */
#define rebase_row(t, row) \
(((row) - (grid->offset + new_screen_rows) + new_rows) & (new_rows - 1))
int end_row = rebase_row(term, sixel.pos.row + sixel.rows - 1);
/*
* TODO: this is basically sixel_insert(), except we
* cannot use it since:
*
* a) we don't have a 'term' reference
* b) the grid hasn't been fully * updated yet
* (e.g. grid->num_rows is invalid etc).
*/
bool inserted = false;
tll_foreach(grid->sixel_images, it2) {
const struct sixel *s = &it2->item;
if (rebase_row(term, s->pos.row + s->rows - 1) < end_row) {
tll_insert_before(grid->sixel_images, it2, sixel);
inserted = true;
break;
}
}
if (!inserted)
tll_push_back(grid->sixel_images, sixel);
/* Insert sixel into the translated, but *unsorted* list. */
tll_push_back(translated_sixels, sixel);
}
/* Sixel has been either re-mapped, or destroyed */
tll_remove(old_sixels, it);
#undef rebase_row
tll_remove(untranslated_sixels, it);
}
#define line_wrap() \
@ -372,9 +342,50 @@ grid_reflow(struct grid *grid, int new_rows, int new_cols,
grid->saved_cursor.lcf = false;
/* Free sixels we failed to "map" to the new grid */
tll_foreach(old_sixels, it)
tll_foreach(untranslated_sixels, it)
sixel_destroy(&it->item);
tll_free(old_sixels);
tll_free(untranslated_sixels);
/* Based on rebase_row() in sixel.c */
/* Uses 'old' offset to ensure old sixels are treated as such */
#define rebase_row(t, row) \
(((row) - (grid->offset + new_screen_rows) + new_rows) & (new_rows - 1))
/* Re-add translated sixels, sorted according to the new grid offset */
tll_foreach(translated_sixels, it) {
int end_row = rebase_row(term, it->item.pos.row + it->item.rows - 1);
/*
* TODO: this is basically sixel_insert(), except we
* cannot use it since:
*
* a) we don't have a 'term' reference
* b) the grid hasn't been fully * updated yet
* (e.g. grid->num_rows is invalid etc).
*/
if (it->item.rows >= new_rows) {
sixel_destroy(&it->item);
continue;
}
assert(it->item.rows < new_rows);
bool inserted = false;
tll_foreach(grid->sixel_images, it2) {
const struct sixel *s = &it2->item;
if (rebase_row(term, s->pos.row + s->rows - 1) < end_row) {
tll_insert_before(grid->sixel_images, it2, it->item);
inserted = true;
break;
}
}
if (!inserted)
tll_push_back(grid->sixel_images, it->item);
}
tll_free(translated_sixels);
#undef rebase_row
tll_free(tracking_points);
}