* Google Author(s): Behdad Esfahbod
*/
+#include "hb-open-type-private.hh"
#include "hb-ot-layout-private.hh"
+#include "hb-ot-map-private.hh"
#include "hb-ot-layout-gdef-table.hh"
#include "hb-ot-layout-gsub-table.hh"
#include "hb-ot-layout-gpos-table.hh"
-#include "hb-ot-layout-jstf-table.hh"
-
-#include "hb-ot-map-private.hh"
-
-#include <stdlib.h>
-#include <string.h>
+// Just so we compile them; unused otherwise:
+#include "hb-ot-layout-base-table.hh"
+#include "hb-ot-layout-jstf-table.hh"
+#include "hb-ot-color-colr-table.hh"
+#include "hb-ot-color-cpal-table.hh"
+#include "hb-ot-color-sbix-table.hh"
+#include "hb-ot-color-svg-table.hh"
+#include "hb-ot-name-table.hh"
+#include "hb-map-private.hh"
-HB_SHAPER_DATA_ENSURE_DECLARE(ot, face)
hb_ot_layout_t *
_hb_ot_layout_create (hb_face_t *face)
{
hb_ot_layout_t *layout = (hb_ot_layout_t *) calloc (1, sizeof (hb_ot_layout_t));
if (unlikely (!layout))
- return NULL;
+ return nullptr;
+
+ layout->gdef_blob = OT::Sanitizer<OT::GDEF>().sanitize (face->reference_table (HB_OT_TAG_GDEF));
+ layout->gdef = layout->gdef_blob->as<OT::GDEF> ();
+
+ layout->gsub_blob = OT::Sanitizer<OT::GSUB>().sanitize (face->reference_table (HB_OT_TAG_GSUB));
+ layout->gsub = layout->gsub_blob->as<OT::GSUB> ();
- layout->gdef_blob = OT::Sanitizer<OT::GDEF>::sanitize (face->reference_table (HB_OT_TAG_GDEF));
- layout->gdef = OT::Sanitizer<OT::GDEF>::lock_instance (layout->gdef_blob);
+ layout->gpos_blob = OT::Sanitizer<OT::GPOS>().sanitize (face->reference_table (HB_OT_TAG_GPOS));
+ layout->gpos = layout->gpos_blob->as<OT::GPOS> ();
- layout->gsub_blob = OT::Sanitizer<OT::GSUB>::sanitize (face->reference_table (HB_OT_TAG_GSUB));
- layout->gsub = OT::Sanitizer<OT::GSUB>::lock_instance (layout->gsub_blob);
+ layout->math.init (face);
+ layout->fvar.init (face);
+ layout->avar.init (face);
- layout->gpos_blob = OT::Sanitizer<OT::GPOS>::sanitize (face->reference_table (HB_OT_TAG_GPOS));
- layout->gpos = OT::Sanitizer<OT::GPOS>::lock_instance (layout->gpos_blob);
+ {
+ /*
+ * The ugly business of blacklisting individual fonts' tables happen here!
+ * See this thread for why we finally had to bend in and do this:
+ * https://lists.freedesktop.org/archives/harfbuzz/2016-February/005489.html
+ */
+ unsigned int gdef_len = layout->gdef_blob->length;
+ unsigned int gsub_len = layout->gsub_blob->length;
+ unsigned int gpos_len = layout->gpos_blob->length;
+ if (0
+ /* sha1sum:c5ee92f0bca4bfb7d06c4d03e8cf9f9cf75d2e8a Windows 7? timesi.ttf */
+ || (442 == gdef_len && 42038 == gpos_len && 2874 == gsub_len)
+ /* sha1sum:37fc8c16a0894ab7b749e35579856c73c840867b Windows 7? timesbi.ttf */
+ || (430 == gdef_len && 40662 == gpos_len && 2874 == gsub_len)
+ /* sha1sum:19fc45110ea6cd3cdd0a5faca256a3797a069a80 Windows 7 timesi.ttf */
+ || (442 == gdef_len && 39116 == gpos_len && 2874 == gsub_len)
+ /* sha1sum:6d2d3c9ed5b7de87bc84eae0df95ee5232ecde26 Windows 7 timesbi.ttf */
+ || (430 == gdef_len && 39374 == gpos_len && 2874 == gsub_len)
+ /* sha1sum:8583225a8b49667c077b3525333f84af08c6bcd8 OS X 10.11.3 Times New Roman Italic.ttf */
+ || (490 == gdef_len && 41638 == gpos_len && 3046 == gsub_len)
+ /* sha1sum:ec0f5a8751845355b7c3271d11f9918a966cb8c9 OS X 10.11.3 Times New Roman Bold Italic.ttf */
+ || (478 == gdef_len && 41902 == gpos_len && 3046 == gsub_len)
+ )
+ {
+ /* In certain versions of Times New Roman Italic and Bold Italic,
+ * ASCII double quotation mark U+0022, mapped to glyph 5, has wrong
+ * glyph class 3 (mark) in GDEF. Nuke the GDEF to avoid zero-width
+ * double-quote. See:
+ * https://lists.freedesktop.org/archives/harfbuzz/2016-February/005489.html
+ */
+ if (3 == layout->gdef->get_glyph_class (5))
+ layout->gdef = &Null(OT::GDEF);
+ }
+ else if (0
+ /* sha1sum:96eda93f7d33e79962451c6c39a6b51ee893ce8c tahoma.ttf from Windows 8 */
+ || (898 == gdef_len && 46470 == gpos_len && 12554 == gsub_len)
+ /* sha1sum:20928dc06014e0cd120b6fc942d0c3b1a46ac2bc tahomabd.ttf from Windows 8 */
+ || (910 == gdef_len && 47732 == gpos_len && 12566 == gsub_len)
+ /* sha1sum:4f95b7e4878f60fa3a39ca269618dfde9721a79e tahoma.ttf from Windows 8.1 */
+ || (928 == gdef_len && 59332 == gpos_len && 23298 == gsub_len)
+ /* sha1sum:6d400781948517c3c0441ba42acb309584b73033 tahomabd.ttf from Windows 8.1 */
+ || (940 == gdef_len && 60732 == gpos_len && 23310 == gsub_len)
+ /* tahoma.ttf v6.04 from Windows 8.1 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
+ || (964 == gdef_len && 60072 == gpos_len && 23836 == gsub_len)
+ /* tahomabd.ttf v6.04 from Windows 8.1 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
+ || (976 == gdef_len && 61456 == gpos_len && 23832 == gsub_len)
+ /* sha1sum:e55fa2dfe957a9f7ec26be516a0e30b0c925f846 tahoma.ttf from Windows 10 */
+ || (994 == gdef_len && 60336 == gpos_len && 24474 == gsub_len)
+ /* sha1sum:7199385abb4c2cc81c83a151a7599b6368e92343 tahomabd.ttf from Windows 10 */
+ || (1006 == gdef_len && 61740 == gpos_len && 24470 == gsub_len)
+ /* tahoma.ttf v6.91 from Windows 10 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
+ || (1006 == gdef_len && 61346 == gpos_len && 24576 == gsub_len)
+ /* tahomabd.ttf v6.91 from Windows 10 x64, see https://bugzilla.mozilla.org/show_bug.cgi?id=1279925 */
+ || (1018 == gdef_len && 62828 == gpos_len && 24572 == gsub_len)
+ /* sha1sum:b9c84d820c49850d3d27ec498be93955b82772b5 tahoma.ttf from Windows 10 AU */
+ || (1006 == gdef_len && 61352 == gpos_len && 24576 == gsub_len)
+ /* sha1sum:2bdfaab28174bdadd2f3d4200a30a7ae31db79d2 tahomabd.ttf from Windows 10 AU */
+ || (1018 == gdef_len && 62834 == gpos_len && 24572 == gsub_len)
+ /* sha1sum:b0d36cf5a2fbe746a3dd277bffc6756a820807a7 Tahoma.ttf from Mac OS X 10.9 */
+ || (832 == gdef_len && 47162 == gpos_len && 7324 == gsub_len)
+ /* sha1sum:12fc4538e84d461771b30c18b5eb6bd434e30fba Tahoma Bold.ttf from Mac OS X 10.9 */
+ || (844 == gdef_len && 45474 == gpos_len && 7302 == gsub_len)
+ /* sha1sum:eb8afadd28e9cf963e886b23a30b44ab4fd83acc himalaya.ttf from Windows 7 */
+ || (180 == gdef_len && 7254 == gpos_len && 13054 == gsub_len)
+ /* sha1sum:73da7f025b238a3f737aa1fde22577a6370f77b0 himalaya.ttf from Windows 8 */
+ || (192 == gdef_len && 7254 == gpos_len && 12638 == gsub_len)
+ /* sha1sum:6e80fd1c0b059bbee49272401583160dc1e6a427 himalaya.ttf from Windows 8.1 */
+ || (192 == gdef_len && 7254 == gpos_len && 12690 == gsub_len)
+ /* 8d9267aea9cd2c852ecfb9f12a6e834bfaeafe44 cantarell-fonts-0.0.21/otf/Cantarell-Regular.otf */
+ /* 983988ff7b47439ab79aeaf9a45bd4a2c5b9d371 cantarell-fonts-0.0.21/otf/Cantarell-Oblique.otf */
+ || (188 == gdef_len && 3852 == gpos_len && 248 == gsub_len)
+ /* 2c0c90c6f6087ffbfea76589c93113a9cbb0e75f cantarell-fonts-0.0.21/otf/Cantarell-Bold.otf */
+ /* 55461f5b853c6da88069ffcdf7f4dd3f8d7e3e6b cantarell-fonts-0.0.21/otf/Cantarell-Bold-Oblique.otf */
+ || (188 == gdef_len && 3426 == gpos_len && 264 == gsub_len)
+ /* d125afa82a77a6475ac0e74e7c207914af84b37a padauk-2.80/Padauk.ttf RHEL 7.2 */
+ || (1058 == gdef_len && 11818 == gpos_len && 47032 == gsub_len)
+ /* 0f7b80437227b90a577cc078c0216160ae61b031 padauk-2.80/Padauk-Bold.ttf RHEL 7.2*/
+ || (1046 == gdef_len && 12600 == gpos_len && 47030 == gsub_len)
+ /* d3dde9aa0a6b7f8f6a89ef1002e9aaa11b882290 padauk-2.80/Padauk.ttf Ubuntu 16.04 */
+ || (1058 == gdef_len && 16770 == gpos_len && 71796 == gsub_len)
+ /* 5f3c98ccccae8a953be2d122c1b3a77fd805093f padauk-2.80/Padauk-Bold.ttf Ubuntu 16.04 */
+ || (1046 == gdef_len && 17862 == gpos_len && 71790 == gsub_len)
+ /* 6c93b63b64e8b2c93f5e824e78caca555dc887c7 padauk-2.80/Padauk-book.ttf */
+ || (1046 == gdef_len && 17112 == gpos_len && 71788 == gsub_len)
+ /* d89b1664058359b8ec82e35d3531931125991fb9 padauk-2.80/Padauk-bookbold.ttf */
+ || (1058 == gdef_len && 17514 == gpos_len && 71794 == gsub_len)
+ /* 824cfd193aaf6234b2b4dc0cf3c6ef576c0d00ef padauk-3.0/Padauk-book.ttf */
+ || (1330 == gdef_len && 57938 == gpos_len && 109904 == gsub_len)
+ /* 91fcc10cf15e012d27571e075b3b4dfe31754a8a padauk-3.0/Padauk-bookbold.ttf */
+ || (1330 == gdef_len && 58972 == gpos_len && 109904 == gsub_len)
+ /* sha1sum: c26e41d567ed821bed997e937bc0c41435689e85 Padauk.ttf
+ * "Padauk Regular" "Version 2.5", see https://crbug.com/681813 */
+ || (1004 == gdef_len && 14836 == gpos_len && 59092 == gsub_len)
+ )
+ {
+ /* Many versions of Tahoma have bad GDEF tables that incorrectly classify some spacing marks
+ * such as certain IPA symbols as glyph class 3. So do older versions of Microsoft Himalaya,
+ * and the version of Cantarell shipped by Ubuntu 16.04.
+ * Nuke the GDEF tables of these fonts to avoid unwanted width-zeroing.
+ * See https://bugzilla.mozilla.org/show_bug.cgi?id=1279925
+ * https://bugzilla.mozilla.org/show_bug.cgi?id=1279693
+ * https://bugzilla.mozilla.org/show_bug.cgi?id=1279875
+ */
+ layout->gdef = &Null(OT::GDEF);
+ }
+ }
layout->gsub_lookup_count = layout->gsub->get_lookup_count ();
layout->gpos_lookup_count = layout->gpos->get_lookup_count ();
(layout->gpos_lookup_count && !layout->gpos_accels)))
{
_hb_ot_layout_destroy (layout);
- return NULL;
+ return nullptr;
}
for (unsigned int i = 0; i < layout->gsub_lookup_count; i++)
void
_hb_ot_layout_destroy (hb_ot_layout_t *layout)
{
- for (unsigned int i = 0; i < layout->gsub_lookup_count; i++)
- layout->gsub_accels[i].fini ();
- for (unsigned int i = 0; i < layout->gpos_lookup_count; i++)
- layout->gpos_accels[i].fini ();
+ if (layout->gsub_accels)
+ for (unsigned int i = 0; i < layout->gsub_lookup_count; i++)
+ layout->gsub_accels[i].fini ();
+ if (layout->gpos_accels)
+ for (unsigned int i = 0; i < layout->gpos_lookup_count; i++)
+ layout->gpos_accels[i].fini ();
free (layout->gsub_accels);
free (layout->gpos_accels);
hb_blob_destroy (layout->gsub_blob);
hb_blob_destroy (layout->gpos_blob);
+ layout->math.fini ();
+ layout->fvar.fini ();
+ layout->avar.fini ();
+
free (layout);
}
+// static inline const OT::BASE&
+// _get_base (hb_face_t *face)
+// {
+// if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::BASE);
+// hb_ot_layout_t * layout = hb_ot_layout_from_face (face);
+// return *(layout->base.get ());
+// }
+
static inline const OT::GDEF&
_get_gdef (hb_face_t *face)
{
- if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return OT::Null(OT::GDEF);
+ if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::GDEF);
return *hb_ot_layout_from_face (face)->gdef;
}
static inline const OT::GSUB&
_get_gsub (hb_face_t *face)
{
- if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return OT::Null(OT::GSUB);
+ if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::GSUB);
return *hb_ot_layout_from_face (face)->gsub;
}
static inline const OT::GPOS&
_get_gpos (hb_face_t *face)
{
- if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return OT::Null(OT::GPOS);
+ if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::GPOS);
return *hb_ot_layout_from_face (face)->gpos;
}
-
/*
* GDEF
*/
return _get_gdef (face).has_glyph_classes ();
}
+/**
+ * hb_ot_layout_get_glyph_class:
+ *
+ * Since: 0.9.7
+ **/
hb_ot_layout_glyph_class_t
hb_ot_layout_get_glyph_class (hb_face_t *face,
hb_codepoint_t glyph)
return (hb_ot_layout_glyph_class_t) _get_gdef (face).get_glyph_class (glyph);
}
+/**
+ * hb_ot_layout_get_glyphs_in_class:
+ *
+ * Since: 0.9.7
+ **/
void
hb_ot_layout_get_glyphs_in_class (hb_face_t *face,
hb_ot_layout_glyph_class_t klass,
hb_codepoint_t glyph,
unsigned int start_offset,
unsigned int *caret_count /* IN/OUT */,
- int *caret_array /* OUT */)
+ hb_position_t *caret_array /* OUT */)
{
return _get_gdef (font->face).get_lig_carets (font, direction, glyph, start_offset, caret_count, caret_array);
}
switch (table_tag) {
case HB_OT_TAG_GSUB: return _get_gsub (face);
case HB_OT_TAG_GPOS: return _get_gpos (face);
- default: return OT::Null(OT::GSUBGPOS);
+ default: return Null(OT::GSUBGPOS);
}
}
hb_tag_t script_tag,
unsigned int *script_index)
{
- ASSERT_STATIC (OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_SCRIPT_INDEX);
+ static_assert ((OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_SCRIPT_INDEX), "");
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
if (g.find_script_index (script_tag, script_index))
unsigned int *script_index,
hb_tag_t *chosen_script)
{
- ASSERT_STATIC (OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_SCRIPT_INDEX);
+ static_assert ((OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_SCRIPT_INDEX), "");
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
while (*script_tags)
return g.get_feature_tags (start_offset, feature_count, feature_tags);
}
+hb_bool_t
+hb_ot_layout_table_find_feature (hb_face_t *face,
+ hb_tag_t table_tag,
+ hb_tag_t feature_tag,
+ unsigned int *feature_index)
+{
+ static_assert ((OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_FEATURE_INDEX), "");
+ const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
+
+ unsigned int num_features = g.get_feature_count ();
+ for (unsigned int i = 0; i < num_features; i++)
+ {
+ if (feature_tag == g.get_feature_tag (i)) {
+ if (feature_index) *feature_index = i;
+ return true;
+ }
+ }
+
+ if (feature_index) *feature_index = HB_OT_LAYOUT_NO_FEATURE_INDEX;
+ return false;
+}
+
unsigned int
hb_ot_layout_script_get_language_tags (hb_face_t *face,
hb_tag_t language_tag,
unsigned int *language_index)
{
- ASSERT_STATIC (OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX);
+ static_assert ((OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX), "");
const OT::Script &s = get_gsubgpos_table (face, table_tag).get_script (script_index);
if (s.find_lang_sys_index (language_tag, language_index))
script_index,
language_index,
feature_index,
- NULL);
+ nullptr);
}
+/**
+ * hb_ot_layout_language_get_required_feature:
+ *
+ * Since: 0.9.30
+ **/
hb_bool_t
hb_ot_layout_language_get_required_feature (hb_face_t *face,
hb_tag_t table_tag,
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
const OT::LangSys &l = g.get_script (script_index).get_lang_sys (language_index);
- ASSERT_STATIC (sizeof (unsigned int) == sizeof (hb_tag_t));
+ static_assert ((sizeof (unsigned int) == sizeof (hb_tag_t)), "");
unsigned int ret = l.get_feature_indexes (start_offset, feature_count, (unsigned int *) feature_tags);
if (feature_tags) {
hb_tag_t feature_tag,
unsigned int *feature_index)
{
- ASSERT_STATIC (OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_FEATURE_INDEX);
+ static_assert ((OT::Index::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_FEATURE_INDEX), "");
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
const OT::LangSys &l = g.get_script (script_index).get_lang_sys (language_index);
return false;
}
+/**
+ * hb_ot_layout_feature_get_lookups:
+ *
+ * Since: 0.9.7
+ **/
unsigned int
hb_ot_layout_feature_get_lookups (hb_face_t *face,
hb_tag_t table_tag,
unsigned int *lookup_count /* IN/OUT */,
unsigned int *lookup_indexes /* OUT */)
{
- const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
- const OT::Feature &f = g.get_feature (feature_index);
-
- return f.get_lookup_indexes (start_offset, lookup_count, lookup_indexes);
+ return hb_ot_layout_feature_with_variations_get_lookups (face,
+ table_tag,
+ feature_index,
+ HB_OT_LAYOUT_NO_VARIATIONS_INDEX,
+ start_offset,
+ lookup_count,
+ lookup_indexes);
}
+/**
+ * hb_ot_layout_table_get_lookup_count:
+ *
+ * Since: 0.9.22
+ **/
unsigned int
hb_ot_layout_table_get_lookup_count (hb_face_t *face,
hb_tag_t table_tag)
{
+ if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return 0;
switch (table_tag)
{
case HB_OT_TAG_GSUB:
script_index,
language_index,
&required_feature_index,
- NULL))
+ nullptr))
_hb_ot_layout_collect_lookups_lookups (face,
table_tag,
required_feature_index,
unsigned int count = hb_ot_layout_script_get_language_tags (face,
table_tag,
script_index,
- 0, NULL, NULL);
+ 0, nullptr, nullptr);
for (unsigned int language_index = 0; language_index < count; language_index++)
_hb_ot_layout_collect_lookups_features (face,
table_tag,
}
}
+/**
+ * hb_ot_layout_collect_lookups:
+ *
+ * Since: 0.9.8
+ **/
void
hb_ot_layout_collect_lookups (hb_face_t *face,
hb_tag_t table_tag,
/* All scripts */
unsigned int count = hb_ot_layout_table_get_script_tags (face,
table_tag,
- 0, NULL, NULL);
+ 0, nullptr, nullptr);
for (unsigned int script_index = 0; script_index < count; script_index++)
_hb_ot_layout_collect_lookups_languages (face,
table_tag,
}
}
+/**
+ * hb_ot_layout_lookup_collect_glyphs:
+ *
+ * Since: 0.9.7
+ **/
void
hb_ot_layout_lookup_collect_glyphs (hb_face_t *face,
hb_tag_t table_tag,
unsigned int lookup_index,
- hb_set_t *glyphs_before, /* OUT. May be NULL */
- hb_set_t *glyphs_input, /* OUT. May be NULL */
- hb_set_t *glyphs_after, /* OUT. May be NULL */
- hb_set_t *glyphs_output /* OUT. May be NULL */)
+ hb_set_t *glyphs_before, /* OUT. May be nullptr */
+ hb_set_t *glyphs_input, /* OUT. May be nullptr */
+ hb_set_t *glyphs_after, /* OUT. May be nullptr */
+ hb_set_t *glyphs_output /* OUT. May be nullptr */)
{
if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return;
}
+/* Variations support */
+
+hb_bool_t
+hb_ot_layout_table_find_feature_variations (hb_face_t *face,
+ hb_tag_t table_tag,
+ const int *coords,
+ unsigned int num_coords,
+ unsigned int *variations_index /* out */)
+{
+ const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
+
+ return g.find_variations_index (coords, num_coords, variations_index);
+}
+
+unsigned int
+hb_ot_layout_feature_with_variations_get_lookups (hb_face_t *face,
+ hb_tag_t table_tag,
+ unsigned int feature_index,
+ unsigned int variations_index,
+ unsigned int start_offset,
+ unsigned int *lookup_count /* IN/OUT */,
+ unsigned int *lookup_indexes /* OUT */)
+{
+ static_assert ((OT::FeatureVariations::NOT_FOUND_INDEX == HB_OT_LAYOUT_NO_VARIATIONS_INDEX), "");
+ const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
+
+ const OT::Feature &f = g.get_feature_variation (feature_index, variations_index);
+
+ return f.get_lookup_indexes (start_offset, lookup_count, lookup_indexes);
+}
+
+
/*
* OT::GSUB
*/
hb_bool_t
hb_ot_layout_has_substitution (hb_face_t *face)
{
- return &_get_gsub (face) != &OT::Null(OT::GSUB);
+ return &_get_gsub (face) != &Null(OT::GSUB);
}
+/**
+ * hb_ot_layout_lookup_would_substitute:
+ *
+ * Since: 0.9.7
+ **/
hb_bool_t
hb_ot_layout_lookup_would_substitute (hb_face_t *face,
unsigned int lookup_index,
hb_bool_t zero_context)
{
if (unlikely (lookup_index >= hb_ot_layout_from_face (face)->gsub_lookup_count)) return false;
- OT::hb_would_apply_context_t c (face, glyphs, glyphs_length, zero_context);
+ OT::hb_would_apply_context_t c (face, glyphs, glyphs_length, (bool) zero_context);
const OT::SubstLookup& l = hb_ot_layout_from_face (face)->gsub->get_lookup (lookup_index);
OT::GSUB::substitute_start (font, buffer);
}
-void
-hb_ot_layout_substitute_finish (hb_font_t *font, hb_buffer_t *buffer)
-{
- OT::GSUB::substitute_finish (font, buffer);
-}
-
+/**
+ * hb_ot_layout_lookup_substitute_closure:
+ *
+ * Since: 0.9.7
+ **/
void
hb_ot_layout_lookup_substitute_closure (hb_face_t *face,
unsigned int lookup_index,
hb_set_t *glyphs)
{
- OT::hb_closure_context_t c (face, glyphs);
+ hb_auto_t<hb_map_t> done_lookups;
+ OT::hb_closure_context_t c (face, glyphs, &done_lookups);
const OT::SubstLookup& l = _get_gsub (face).get_lookup (lookup_index);
- l.closure (&c);
+ l.closure (&c, lookup_index);
+}
+
+/**
+ * hb_ot_layout_lookups_substitute_closure:
+ *
+ * Compute the transitive closure of glyphs needed for all of the
+ * provided lookups.
+ *
+ * Since: 1.8.1
+ **/
+void
+hb_ot_layout_lookups_substitute_closure (hb_face_t *face,
+ const hb_set_t *lookups,
+ hb_set_t *glyphs)
+{
+ hb_auto_t<hb_map_t> done_lookups;
+ OT::hb_closure_context_t c (face, glyphs, &done_lookups);
+ const OT::GSUB& gsub = _get_gsub (face);
+
+ unsigned int glyphs_length;
+ do
+ {
+ glyphs_length = glyphs->get_population ();
+ if (lookups != nullptr)
+ {
+ for (hb_codepoint_t lookup_index = HB_SET_VALUE_INVALID; hb_set_next (lookups, &lookup_index);)
+ gsub.get_lookup (lookup_index).closure (&c, lookup_index);
+ }
+ else
+ {
+ for (unsigned int i = 0; i < gsub.get_lookup_count (); i++)
+ gsub.get_lookup (i).closure (&c, i);
+ }
+ } while (glyphs_length != glyphs->get_population ());
}
/*
hb_bool_t
hb_ot_layout_has_positioning (hb_face_t *face)
{
- return &_get_gpos (face) != &OT::Null(OT::GPOS);
+ return &_get_gpos (face) != &Null(OT::GPOS);
}
void
}
void
-hb_ot_layout_position_finish (hb_font_t *font, hb_buffer_t *buffer)
+hb_ot_layout_position_finish_advances (hb_font_t *font, hb_buffer_t *buffer)
+{
+ OT::GPOS::position_finish_advances (font, buffer);
+}
+
+void
+hb_ot_layout_position_finish_offsets (hb_font_t *font, hb_buffer_t *buffer)
{
- OT::GPOS::position_finish (font, buffer);
+ OT::GPOS::position_finish_offsets (font, buffer);
}
+/**
+ * hb_ot_layout_get_size_params:
+ *
+ * Since: 0.9.10
+ **/
hb_bool_t
hb_ot_layout_get_size_params (hb_face_t *face,
- unsigned int *design_size, /* OUT. May be NULL */
- unsigned int *subfamily_id, /* OUT. May be NULL */
- unsigned int *subfamily_name_id, /* OUT. May be NULL */
- unsigned int *range_start, /* OUT. May be NULL */
- unsigned int *range_end /* OUT. May be NULL */)
+ unsigned int *design_size, /* OUT. May be nullptr */
+ unsigned int *subfamily_id, /* OUT. May be nullptr */
+ unsigned int *subfamily_name_id, /* OUT. May be nullptr */
+ unsigned int *range_start, /* OUT. May be nullptr */
+ unsigned int *range_end /* OUT. May be nullptr */)
{
const OT::GPOS &gpos = _get_gpos (face);
const hb_tag_t tag = HB_TAG ('s','i','z','e');
};
-template <typename Obj>
+struct hb_get_subtables_context_t :
+ OT::hb_dispatch_context_t<hb_get_subtables_context_t, hb_void_t, HB_DEBUG_APPLY>
+{
+ template <typename Type>
+ static inline bool apply_to (const void *obj, OT::hb_ot_apply_context_t *c)
+ {
+ const Type *typed_obj = (const Type *) obj;
+ return typed_obj->apply (c);
+ }
+
+ typedef bool (*hb_apply_func_t) (const void *obj, OT::hb_ot_apply_context_t *c);
+
+ struct hb_applicable_t
+ {
+ inline void init (const void *obj_, hb_apply_func_t apply_func_)
+ {
+ obj = obj_;
+ apply_func = apply_func_;
+ }
+
+ inline bool apply (OT::hb_ot_apply_context_t *c) const { return apply_func (obj, c); }
+
+ private:
+ const void *obj;
+ hb_apply_func_t apply_func;
+ };
+
+ typedef hb_auto_t<hb_vector_t<hb_applicable_t> > array_t;
+
+ /* Dispatch interface. */
+ inline const char *get_name (void) { return "GET_SUBTABLES"; }
+ template <typename T>
+ inline return_t dispatch (const T &obj)
+ {
+ hb_applicable_t *entry = array.push();
+ entry->init (&obj, apply_to<T>);
+ return HB_VOID;
+ }
+ static return_t default_return_value (void) { return HB_VOID; }
+ bool stop_sublookup_iteration (return_t r HB_UNUSED) const { return false; }
+
+ hb_get_subtables_context_t (array_t &array_) :
+ array (array_),
+ debug_depth (0) {}
+
+ array_t &array;
+ unsigned int debug_depth;
+};
+
static inline bool
-apply_forward (OT::hb_apply_context_t *c,
- const Obj &obj,
- const hb_ot_layout_lookup_accelerator_t &accel)
+apply_forward (OT::hb_ot_apply_context_t *c,
+ const hb_ot_layout_lookup_accelerator_t &accel,
+ const hb_get_subtables_context_t::array_t &subtables)
{
bool ret = false;
hb_buffer_t *buffer = c->buffer;
- while (buffer->idx < buffer->len)
+ while (buffer->idx < buffer->len && buffer->successful)
{
+ bool applied = false;
if (accel.may_have (buffer->cur().codepoint) &&
(buffer->cur().mask & c->lookup_mask) &&
- c->check_glyph_property (&buffer->cur(), c->lookup_props) &&
- obj.apply (c))
+ c->check_glyph_property (&buffer->cur(), c->lookup_props))
+ {
+ for (unsigned int i = 0; i < subtables.len; i++)
+ if (subtables[i].apply (c))
+ {
+ applied = true;
+ break;
+ }
+ }
+
+ if (applied)
ret = true;
else
buffer->next_glyph ();
return ret;
}
-template <typename Obj>
static inline bool
-apply_backward (OT::hb_apply_context_t *c,
- const Obj &obj,
- const hb_ot_layout_lookup_accelerator_t &accel)
+apply_backward (OT::hb_ot_apply_context_t *c,
+ const hb_ot_layout_lookup_accelerator_t &accel,
+ const hb_get_subtables_context_t::array_t &subtables)
{
bool ret = false;
hb_buffer_t *buffer = c->buffer;
{
if (accel.may_have (buffer->cur().codepoint) &&
(buffer->cur().mask & c->lookup_mask) &&
- c->check_glyph_property (&buffer->cur(), c->lookup_props) &&
- obj.apply (c))
- ret = true;
+ c->check_glyph_property (&buffer->cur(), c->lookup_props))
+ {
+ for (unsigned int i = 0; i < subtables.len; i++)
+ if (subtables[i].apply (c))
+ {
+ ret = true;
+ break;
+ }
+ }
/* The reverse lookup doesn't "advance" cursor (for good reason). */
buffer->idx--;
return ret;
}
-struct hb_apply_forward_context_t
-{
- inline const char *get_name (void) { return "APPLY_FORWARD"; }
- static const unsigned int max_debug_depth = HB_DEBUG_APPLY;
- typedef bool return_t;
- template <typename T, typename F>
- inline bool may_dispatch (const T *obj, const F *format) { return true; }
- template <typename T>
- inline return_t dispatch (const T &obj) { return apply_forward (c, obj, accel); }
- static return_t default_return_value (void) { return false; }
- bool stop_sublookup_iteration (return_t r HB_UNUSED) const { return true; }
-
- hb_apply_forward_context_t (OT::hb_apply_context_t *c_,
- const hb_ot_layout_lookup_accelerator_t &accel_) :
- c (c_),
- accel (accel_),
- debug_depth (0) {}
-
- OT::hb_apply_context_t *c;
- const hb_ot_layout_lookup_accelerator_t &accel;
- unsigned int debug_depth;
-};
-
template <typename Proxy>
static inline void
-apply_string (OT::hb_apply_context_t *c,
+apply_string (OT::hb_ot_apply_context_t *c,
const typename Proxy::Lookup &lookup,
const hb_ot_layout_lookup_accelerator_t &accel)
{
if (unlikely (!buffer->len || !c->lookup_mask))
return;
- c->set_lookup (lookup);
+ c->set_lookup_props (lookup.get_props ());
+
+ hb_get_subtables_context_t::array_t subtables;
+ hb_get_subtables_context_t c_get_subtables (subtables);
+ lookup.dispatch (&c_get_subtables);
if (likely (!lookup.is_reverse ()))
{
buffer->idx = 0;
bool ret;
- if (lookup.get_subtable_count () == 1)
- {
- hb_apply_forward_context_t c_forward (c, accel);
- ret = lookup.dispatch (&c_forward);
- }
- else
- ret = apply_forward (c, lookup, accel);
+ ret = apply_forward (c, accel, subtables);
if (ret)
{
if (!Proxy::inplace)
buffer->remove_output ();
buffer->idx = buffer->len - 1;
- apply_backward (c, lookup, accel);
+ apply_backward (c, accel, subtables);
}
}
{
const unsigned int table_index = proxy.table_index;
unsigned int i = 0;
- OT::hb_apply_context_t c (table_index, font, buffer);
+ OT::hb_ot_apply_context_t c (table_index, font, buffer);
c.set_recurse_func (Proxy::Lookup::apply_recurse_func);
for (unsigned int stage_index = 0; stage_index < stages[table_index].len; stage_index++) {
for (; i < stage->last_lookup; i++)
{
unsigned int lookup_index = lookups[table_index][i].index;
+ if (!buffer->message (font, "start lookup %d", lookup_index)) continue;
+ c.set_lookup_index (lookup_index);
c.set_lookup_mask (lookups[table_index][i].mask);
c.set_auto_zwj (lookups[table_index][i].auto_zwj);
+ c.set_auto_zwnj (lookups[table_index][i].auto_zwnj);
apply_string<Proxy> (&c,
proxy.table.get_lookup (lookup_index),
proxy.accels[lookup_index]);
+ (void) buffer->message (font, "end lookup %d", lookup_index);
}
if (stage->pause_func)
apply (proxy, plan, font, buffer);
}
-HB_INTERNAL void
-hb_ot_layout_substitute_lookup (OT::hb_apply_context_t *c,
+void
+hb_ot_layout_substitute_lookup (OT::hb_ot_apply_context_t *c,
const OT::SubstLookup &lookup,
const hb_ot_layout_lookup_accelerator_t &accel)
{
apply_string<GSUBProxy> (c, lookup, accel);
}
+
+
+
+
+/*
+ * OT::BASE
+ */
+
+// /**
+// * hb_ot_base_has_data:
+// * @face: #hb_face_t to test
+// *
+// * This function allows to verify the presence of an OpenType BASE table on the
+// * face.
+// *
+// * Return value: true if face has a BASE table, false otherwise
+// *
+// * Since: XXX
+// **/
+// hb_bool_t
+// hb_ot_base_has_data (hb_face_t *face)
+// {
+// return &_get_base (face) != &Null(OT::BASE);
+// }
projects / platform / upstream / harfbuzz.git / blobdiff