diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat3.hh | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat3.hh')
-rw-r--r-- | gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat3.hh | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat3.hh b/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat3.hh new file mode 100644 index 0000000000..e7e3c5c6d1 --- /dev/null +++ b/gfx/harfbuzz/src/OT/Layout/GPOS/AnchorFormat3.hh @@ -0,0 +1,100 @@ +#ifndef OT_LAYOUT_GPOS_ANCHORFORMAT3_HH +#define OT_LAYOUT_GPOS_ANCHORFORMAT3_HH + +namespace OT { +namespace Layout { +namespace GPOS_impl { + +struct AnchorFormat3 +{ + protected: + HBUINT16 format; /* Format identifier--format = 3 */ + FWORD xCoordinate; /* Horizontal value--in design units */ + FWORD yCoordinate; /* Vertical value--in design units */ + Offset16To<Device> + xDeviceTable; /* Offset to Device table for X + * coordinate-- from beginning of + * Anchor table (may be NULL) */ + Offset16To<Device> + yDeviceTable; /* Offset to Device table for Y + * coordinate-- from beginning of + * Anchor table (may be NULL) */ + public: + DEFINE_SIZE_STATIC (10); + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && xDeviceTable.sanitize (c, this) && yDeviceTable.sanitize (c, this)); + } + + void get_anchor (hb_ot_apply_context_t *c, hb_codepoint_t glyph_id HB_UNUSED, + float *x, float *y) const + { + hb_font_t *font = c->font; + *x = font->em_fscale_x (xCoordinate); + *y = font->em_fscale_y (yCoordinate); + + if (font->x_ppem || font->num_coords) + *x += (this+xDeviceTable).get_x_delta (font, c->var_store, c->var_store_cache); + if (font->y_ppem || font->num_coords) + *y += (this+yDeviceTable).get_y_delta (font, c->var_store, c->var_store_cache); + } + + bool subset (hb_subset_context_t *c) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (*this); + if (unlikely (!out)) return_trace (false); + if (unlikely (!c->serializer->embed (format))) return_trace (false); + if (unlikely (!c->serializer->embed (xCoordinate))) return_trace (false); + if (unlikely (!c->serializer->embed (yCoordinate))) return_trace (false); + + unsigned x_varidx = xDeviceTable ? (this+xDeviceTable).get_variation_index () : HB_OT_LAYOUT_NO_VARIATIONS_INDEX; + if (c->plan->layout_variation_idx_delta_map.has (x_varidx)) + { + int delta = hb_second (c->plan->layout_variation_idx_delta_map.get (x_varidx)); + if (delta != 0) + { + if (!c->serializer->check_assign (out->xCoordinate, xCoordinate + delta, + HB_SERIALIZE_ERROR_INT_OVERFLOW)) + return_trace (false); + } + } + + unsigned y_varidx = yDeviceTable ? (this+yDeviceTable).get_variation_index () : HB_OT_LAYOUT_NO_VARIATIONS_INDEX; + if (c->plan->layout_variation_idx_delta_map.has (y_varidx)) + { + int delta = hb_second (c->plan->layout_variation_idx_delta_map.get (y_varidx)); + if (delta != 0) + { + if (!c->serializer->check_assign (out->yCoordinate, yCoordinate + delta, + HB_SERIALIZE_ERROR_INT_OVERFLOW)) + return_trace (false); + } + } + + if (c->plan->all_axes_pinned) + return_trace (c->serializer->check_assign (out->format, 1, HB_SERIALIZE_ERROR_INT_OVERFLOW)); + + if (!c->serializer->embed (xDeviceTable)) return_trace (false); + if (!c->serializer->embed (yDeviceTable)) return_trace (false); + + out->xDeviceTable.serialize_copy (c->serializer, xDeviceTable, this, 0, hb_serialize_context_t::Head, &c->plan->layout_variation_idx_delta_map); + out->yDeviceTable.serialize_copy (c->serializer, yDeviceTable, this, 0, hb_serialize_context_t::Head, &c->plan->layout_variation_idx_delta_map); + return_trace (out); + } + + void collect_variation_indices (hb_collect_variation_indices_context_t *c) const + { + (this+xDeviceTable).collect_variation_indices (c); + (this+yDeviceTable).collect_variation_indices (c); + } +}; + + +} +} +} + +#endif // OT_LAYOUT_GPOS_ANCHORFORMAT3_HH |