Lines Matching refs:buffer
30 #include "hb-buffer-private.hh"
61 /* Here is how the buffer works internally:
73 * to an alternate buffer (which we reuse the pos buffer for!), and its
524 /* If we hit the start of buffer, continue in out-buffer. */
556 /* If we hit the end of out-buffer, continue in buffer. */
571 /* If script is set to INVALID, guess from buffer contents */
598 dump_var_allocation (const hb_buffer_t *buffer)
602 buf[i] = '0' + buffer->allocated_var_bytes[7 - i];
604 DEBUG_MSG (BUFFER, buffer,
613 if (DEBUG_ENABLED (BUFFER))
615 DEBUG_MSG (BUFFER, this,
628 if (DEBUG_ENABLED (BUFFER))
631 DEBUG_MSG (BUFFER, this,
645 if (DEBUG_ENABLED (BUFFER))
648 DEBUG_MSG (BUFFER, this,
679 hb_buffer_t *buffer;
681 if (!(buffer = hb_object_create<hb_buffer_t> ()))
684 buffer->reset ();
686 return buffer;
722 * @buffer: a buffer.
731 hb_buffer_reference (hb_buffer_t *buffer)
733 return hb_object_reference (buffer);
738 * @buffer: a buffer.
745 hb_buffer_destroy (hb_buffer_t *buffer)
747 if (!hb_object_destroy (buffer)) return;
749 hb_unicode_funcs_destroy (buffer->unicode);
751 free (buffer->info);
752 free (buffer->pos);
754 free (buffer);
759 * @buffer: a buffer.
772 hb_buffer_set_user_data (hb_buffer_t *buffer,
778 return hb_object_set_user_data (buffer, key, data, destroy, replace);
783 * @buffer: a buffer.
793 hb_buffer_get_user_data (hb_buffer_t *buffer,
796 return hb_object_get_user_data (buffer, key);
802 * @buffer: a buffer.
810 hb_buffer_set_content_type (hb_buffer_t *buffer,
813 buffer->content_type = content_type;
818 * @buffer: a buffer.
827 hb_buffer_get_content_type (hb_buffer_t *buffer)
829 return buffer->content_type;
835 * @buffer: a buffer.
843 hb_buffer_set_unicode_funcs (hb_buffer_t *buffer,
846 if (unlikely (hb_object_is_inert (buffer)))
854 hb_unicode_funcs_destroy (buffer->unicode);
855 buffer->unicode = unicode_funcs;
860 * @buffer: a buffer.
869 hb_buffer_get_unicode_funcs (hb_buffer_t *buffer)
871 return buffer->unicode;
876 * @buffer: a buffer.
884 hb_buffer_set_direction (hb_buffer_t *buffer,
888 if (unlikely (hb_object_is_inert (buffer)))
891 buffer->props.direction = direction;
896 * @buffer: a buffer.
905 hb_buffer_get_direction (hb_buffer_t *buffer)
907 return buffer->props.direction;
912 * @buffer: a buffer.
920 hb_buffer_set_script (hb_buffer_t *buffer,
923 if (unlikely (hb_object_is_inert (buffer)))
926 buffer->props.script = script;
931 * @buffer: a buffer.
940 hb_buffer_get_script (hb_buffer_t *buffer)
942 return buffer->props.script;
947 * @buffer: a buffer.
955 hb_buffer_set_language (hb_buffer_t *buffer,
958 if (unlikely (hb_object_is_inert (buffer)))
961 buffer->props.language = language;
966 * @buffer: a buffer.
975 hb_buffer_get_language (hb_buffer_t *buffer)
977 return buffer->props.language;
982 * @buffer: a buffer.
990 hb_buffer_set_segment_properties (hb_buffer_t *buffer,
993 if (unlikely (hb_object_is_inert (buffer)))
996 buffer->props = *props;
1001 * @buffer: a buffer.
1009 hb_buffer_get_segment_properties (hb_buffer_t *buffer,
1012 *props = buffer->props;
1018 * @buffer: a buffer.
1026 hb_buffer_set_flags (hb_buffer_t *buffer,
1029 if (unlikely (hb_object_is_inert (buffer)))
1032 buffer->flags = flags;
1037 * @buffer: a buffer.
1046 hb_buffer_get_flags (hb_buffer_t *buffer)
1048 return buffer->flags;
1054 * @buffer: a buffer.
1062 hb_buffer_set_replacement_codepoint (hb_buffer_t *buffer,
1065 if (unlikely (hb_object_is_inert (buffer)))
1068 buffer->replacement = replacement;
1073 * @buffer: a buffer.
1082 hb_buffer_get_replacement_codepoint (hb_buffer_t *buffer)
1084 return buffer->replacement;
1090 * @buffer: a buffer.
1097 hb_buffer_reset (hb_buffer_t *buffer)
1099 buffer->reset ();
1104 * @buffer: a buffer.
1111 hb_buffer_clear_contents (hb_buffer_t *buffer)
1113 buffer->clear ();
1118 * @buffer: a buffer.
1128 hb_buffer_pre_allocate (hb_buffer_t *buffer, unsigned int size)
1130 return buffer->ensure (size);
1135 * @buffer: a buffer.
1144 hb_buffer_allocation_successful (hb_buffer_t *buffer)
1146 return !buffer->in_error;
1151 * @buffer: a buffer.
1160 hb_buffer_add (hb_buffer_t *buffer,
1164 buffer->add (codepoint, cluster);
1165 buffer->clear_context (1);
1170 * @buffer: a buffer.
1180 hb_buffer_set_length (hb_buffer_t *buffer,
1183 if (unlikely (hb_object_is_inert (buffer)))
1186 if (!buffer->ensure (length))
1190 if (length > buffer->len) {
1191 memset (buffer->info + buffer->len, 0, sizeof (buffer->info[0]) * (length - buffer->len));
1192 if (buffer->have_positions)
1193 memset (buffer->pos + buffer->len, 0, sizeof (buffer->pos[0]) * (length - buffer->len));
1196 buffer->len = length;
1200 buffer->content_type = HB_BUFFER_CONTENT_TYPE_INVALID;
1201 buffer->clear_context (0);
1203 buffer->clear_context (1);
1210 * @buffer: a buffer.
1212 * Returns the number of items in the buffer.
1214 * Return value: buffer length.
1219 hb_buffer_get_length (hb_buffer_t *buffer)
1221 return buffer->len;
1226 * @buffer: a buffer.
1229 * Returns buffer glyph information array. Returned pointer
1230 * is valid as long as buffer contents are not modified.
1232 * Return value: (transfer none) (array length=length): buffer glyph information array.
1237 hb_buffer_get_glyph_infos (hb_buffer_t *buffer,
1241 *length = buffer->len;
1243 return (hb_glyph_info_t *) buffer->info;
1248 * @buffer: a buffer.
1251 * Returns buffer glyph position array. Returned pointer
1252 * is valid as long as buffer contents are not modified.
1254 * Return value: (transfer none) (array length=length): buffer glyph position array.
1259 hb_buffer_get_glyph_positions (hb_buffer_t *buffer,
1262 if (!buffer->have_positions)
1263 buffer->clear_positions ();
1266 *length = buffer->len;
1268 return (hb_glyph_position_t *) buffer->pos;
1273 * @buffer: a buffer.
1275 * Reverses buffer contents.
1280 hb_buffer_reverse (hb_buffer_t *buffer)
1282 buffer->reverse ();
1287 * @buffer: a buffer.
1289 * Reverses buffer clusters. That is, the buffer contents are
1296 hb_buffer_reverse_clusters (hb_buffer_t *buffer)
1298 buffer->reverse_clusters ();
1303 * @buffer: a buffer.
1305 * Sets unset buffer segment properties based on buffer Unicode
1306 * contents. If buffer is not empty, it must have content type
1309 * If buffer script is not set (ie. is %HB_SCRIPT_INVALID), it
1311 * the buffer that has a script other than %HB_SCRIPT_COMMON,
1314 * Next, if buffer direction is not set (ie. is %HB_DIRECTION_INVALID),
1316 * buffer script as returned by hb_script_get_horizontal_direction().
1318 * Finally, if buffer language is not set (ie. is %HB_LANGUAGE_INVALID),
1321 * taking buffer script into consideration when choosing a language.
1326 hb_buffer_guess_segment_properties (hb_buffer_t *buffer)
1328 buffer->guess_segment_properties ();
1333 hb_buffer_add_utf (hb_buffer_t *buffer,
1340 const hb_codepoint_t replacement = buffer->replacement;
1342 assert (buffer->content_type == HB_BUFFER_CONTENT_TYPE_UNICODE ||
1343 (!buffer->len && buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID));
1345 if (unlikely (hb_object_is_inert (buffer)))
1354 buffer->ensure (buffer->len + item_length * sizeof (T) / 4);
1356 /* If buffer is empty and pre-context provided, install it.
1363 if (!buffer->len && item_offset > 0)
1366 buffer->clear_context (0);
1369 while (start < prev && buffer->context_len[0] < buffer->CONTEXT_LENGTH)
1373 buffer->context[0][buffer->context_len[0]++] = u;
1384 buffer->add (u, old_next - (const T *) text);
1388 buffer->clear_context (1);
1390 while (next < end && buffer->context_len[1] < buffer->CONTEXT_LENGTH)
1394 buffer->context[1][buffer->context_len[1]++] = u;
1397 buffer->content_type = HB_BUFFER_CONTENT_TYPE_UNICODE;
1402 * @buffer: a buffer.
1413 hb_buffer_add_utf8 (hb_buffer_t *buffer,
1419 hb_buffer_add_utf<true> (buffer, (const uint8_t *) text, text_length, item_offset, item_length);
1424 * @buffer: a buffer.
1435 hb_buffer_add_utf16 (hb_buffer_t *buffer,
1441 hb_buffer_add_utf<true> (buffer, text, text_length, item_offset, item_length);
1446 * @buffer: a buffer.
1457 hb_buffer_add_utf32 (hb_buffer_t *buffer,
1463 hb_buffer_add_utf<true> (buffer, text, text_length, item_offset, item_length);
1468 * @buffer: a buffer.
1479 hb_buffer_add_codepoints (hb_buffer_t *buffer,
1485 hb_buffer_add_utf<false> (buffer, text, text_length, item_offset, item_length);
1497 normalize_glyphs_cluster (hb_buffer_t *buffer,
1502 hb_glyph_position_t *pos = buffer->pos;
1531 hb_bubble_sort (buffer->info + start, end - start - 1, compare_info_codepoint, buffer->pos + start);
1540 hb_bubble_sort (buffer->info + start + 1, end - start - 1, compare_info_codepoint, buffer->pos + start + 1);
1546 * @buffer: a buffer.
1553 hb_buffer_normalize_glyphs (hb_buffer_t *buffer)
1555 assert (buffer->have_positions);
1556 assert (buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS);
1558 bool backward = HB_DIRECTION_IS_BACKWARD (buffer->props.direction);
1560 unsigned int count = buffer->len;
1562 hb_glyph_info_t *info = buffer->info;
1568 normalize_glyphs_cluster (buffer, start, end, backward);
1571 normalize_glyphs_cluster (buffer, start, end, backward);
