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render: resize: don't reflow text if grid layout hasn't changed

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A window resize doesn't necessarily mean the grid layout changes. When
it doesn't, don't reflow text.

This fixes a slowness issue on Sway, when swapping positions of two
~equally sized windows.
This commit is contained in:
Daniel Eklöf 2020-02-14 19:03:33 +01:00
parent ec63a24c80
commit 60056fdd61
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GPG key ID: 5BBD4992C116573F
1 changed files with 7 additions and 0 deletions
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7
render.c
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@ -1130,6 +1130,11 @@ maybe_resize(struct terminal *term, int width, int height, bool force)
term->x_margin = (term->width - new_cols * term->cell_width) / 2;
term->y_margin = (term->height - new_rows * term->cell_height) / 2;
if (old_rows == new_rows && old_cols == new_cols) {
/* Skip reflow if grid layout hasn't changed */
goto done;
}
/* Allocate new 'normal' and 'alt' grids */
struct row **normal = calloc(new_normal_grid_rows, sizeof(normal[0]));
struct row **alt = calloc(new_alt_grid_rows, sizeof(alt[0]));
@ -1250,6 +1255,8 @@ maybe_resize(struct terminal *term, int width, int height, bool force)
term->render.last_cursor.cell = NULL;
tll_free(term->normal.scroll_damage);
tll_free(term->alt.scroll_damage);
done:
term->render.last_buf = NULL;
term_damage_view(term);
render_refresh(term);