diff options
Diffstat (limited to 'pango/pango-context.c')
| -rw-r--r-- | pango/pango-context.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/pango/pango-context.c b/pango/pango-context.c index 0e9f7146..c8a7d5c1 100644 --- a/pango/pango-context.c +++ b/pango/pango-context.c @@ -510,7 +510,10 @@ pango_context_get_base_dir (PangoContext *context) * @cached_iter: Cached attribute iterator, or NULL * * Breaks a piece of text into segments with consistent - * directional level and shaping engine. + * directional level and shaping engine. Each byte of @text will + * be contained in exactly one of the items in the returned list; + * the generated list of items will be in logical order (the start + * offsets of the items are ascending). * * @cached_iter should be an iterator over @attrs currently positioned at a * range before or containing @start_index; @cached_iter will be advanced to @@ -565,7 +568,7 @@ pango_itemize (PangoContext *context, embedding_levels = g_new (guint8, n_chars); pango_log2vis_get_embedding_levels (text_ucs4, n_chars, &base_dir, - embedding_levels); + embedding_levels); /* Storing these as ranges would be a lot more efficient, * but also more complicated... we take the simple @@ -603,7 +606,11 @@ pango_itemize (PangoContext *context, fonts[i] != fonts[i-1] || extra_attr_lists[i] != extra_attr_lists[i-1]) { - item = g_new (PangoItem, 1); + /* assert that previous item got at least one char */ + g_assert (item == NULL || item->length > 0); + g_assert (item == NULL || item->num_chars > 0); + + item = pango_item_new (); item->offset = p - text; item->num_chars = 0; item->analysis.level = embedding_levels[i]; |