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textlinedisplaycache: short-circuit y_range invalidation

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If we have a y==-1 then we are generally invalidating the whole textview.
For this case, we can just discard the entire GtkTextLineDisplay cache.

Fixes #2975
This commit is contained in:
Christian Hergert 2020-08-02 16:35:50 -07:00
parent 7fe7d5ab4f
commit 94d17a6809
1 changed files with 6 additions and 0 deletions
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6
gtk/gtktextlinedisplaycache.c
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@ -663,6 +663,12 @@ gtk_text_line_display_cache_invalidate_y_range (GtkTextLineDisplayCache *cache,
STAT_INC (cache->inval_by_y_range);
if (y < 0)
{
gtk_text_line_display_cache_invalidate (cache);
return;
}
btree = _gtk_text_buffer_get_btree (layout->buffer);
iter = find_iter_at_at_y (cache, layout, y);