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| author | Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io> | 2023-02-27 12:11:51 +0100 |
|---|---|---|
| committer | Qt Cherry-pick Bot <cherrypick_bot@qt-project.org> | 2023-03-02 05:21:49 +0000 |
| commit | 7f8020f1f7177d8f3a626e0b746f07dd7727b7e6 (patch) | |
| tree | 8cdf4986c75789e01b7538a16d47e5452d439732 /src/3rdparty/harfbuzz-ng/src/OT/glyf/glyf-helpers.hh | |
| parent | 474e2c9208a9cc7398b1882dd73b4034da6d44b6 (diff) | |
| download | qtbase-7f8020f1f7177d8f3a626e0b746f07dd7727b7e6.tar.gz | |
Update Harfbuzz to 7.0.1
This is the 6.4-specific update of Harfbuzz, since Harfbuzz
was currently on an older version in 6.4 compared to other
branches.
This also backports the change to the qtextlayout test that
was done on other branches for the 6.0.0 update.
Fixes: QTBUG-111535
Change-Id: Ie8217f1541a02d3800142b88cf0007be0ed0d1e2
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit 13549fa7c2d27ba588471f97a640f4dbcf86b10c)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/OT/glyf/glyf-helpers.hh')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/OT/glyf/glyf-helpers.hh | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/OT/glyf/glyf-helpers.hh b/src/3rdparty/harfbuzz-ng/src/OT/glyf/glyf-helpers.hh new file mode 100644 index 0000000000..30106b2b98 --- /dev/null +++ b/src/3rdparty/harfbuzz-ng/src/OT/glyf/glyf-helpers.hh @@ -0,0 +1,104 @@ +#ifndef OT_GLYF_GLYF_HELPERS_HH +#define OT_GLYF_GLYF_HELPERS_HH + + +#include "../../hb-open-type.hh" +#include "../../hb-subset-plan.hh" + +#include "loca.hh" + + +namespace OT { +namespace glyf_impl { + + +template<typename IteratorIn, typename IteratorOut, + hb_requires (hb_is_source_of (IteratorIn, unsigned int)), + hb_requires (hb_is_sink_of (IteratorOut, unsigned))> +static void +_write_loca (IteratorIn&& it, bool short_offsets, IteratorOut&& dest) +{ + unsigned right_shift = short_offsets ? 1 : 0; + unsigned int offset = 0; + dest << 0; + + it + | hb_map ([=, &offset] (unsigned int padded_size) + { + offset += padded_size; + DEBUG_MSG (SUBSET, nullptr, "loca entry offset %u", offset); + return offset >> right_shift; + }) + | hb_sink (dest) + ; +} + +static bool +_add_head_and_set_loca_version (hb_subset_plan_t *plan, bool use_short_loca) +{ + hb_blob_t *head_blob = hb_sanitize_context_t ().reference_table<head> (plan->source); + hb_blob_t *head_prime_blob = hb_blob_copy_writable_or_fail (head_blob); + hb_blob_destroy (head_blob); + + if (unlikely (!head_prime_blob)) + return false; + + head *head_prime = (head *) hb_blob_get_data_writable (head_prime_blob, nullptr); + head_prime->indexToLocFormat = use_short_loca ? 0 : 1; + if (plan->normalized_coords) + { + head_prime->xMin = plan->head_maxp_info.xMin; + head_prime->xMax = plan->head_maxp_info.xMax; + head_prime->yMin = plan->head_maxp_info.yMin; + head_prime->yMax = plan->head_maxp_info.yMax; + + unsigned orig_flag = head_prime->flags; + if (plan->head_maxp_info.allXMinIsLsb) + orig_flag |= 1 << 1; + else + orig_flag &= ~(1 << 1); + head_prime->flags = orig_flag; + } + bool success = plan->add_table (HB_OT_TAG_head, head_prime_blob); + + hb_blob_destroy (head_prime_blob); + return success; +} + +template<typename Iterator, + hb_requires (hb_is_source_of (Iterator, unsigned int))> +static bool +_add_loca_and_head (hb_subset_plan_t * plan, Iterator padded_offsets, bool use_short_loca) +{ + unsigned num_offsets = padded_offsets.len () + 1; + unsigned entry_size = use_short_loca ? 2 : 4; + char *loca_prime_data = (char *) hb_calloc (entry_size, num_offsets); + + if (unlikely (!loca_prime_data)) return false; + + DEBUG_MSG (SUBSET, nullptr, "loca entry_size %u num_offsets %u size %u", + entry_size, num_offsets, entry_size * num_offsets); + + if (use_short_loca) + _write_loca (padded_offsets, true, hb_array ((HBUINT16 *) loca_prime_data, num_offsets)); + else + _write_loca (padded_offsets, false, hb_array ((HBUINT32 *) loca_prime_data, num_offsets)); + + hb_blob_t *loca_blob = hb_blob_create (loca_prime_data, + entry_size * num_offsets, + HB_MEMORY_MODE_WRITABLE, + loca_prime_data, + hb_free); + + bool result = plan->add_table (HB_OT_TAG_loca, loca_blob) + && _add_head_and_set_loca_version (plan, use_short_loca); + + hb_blob_destroy (loca_blob); + return result; +} + + +} /* namespace glyf_impl */ +} /* namespace OT */ + + +#endif /* OT_GLYF_GLYF_HELPERS_HH */ |