#include "hb-font-private.hh"
#include "hb-ot-cmap-table.hh"
-#include "hb-ot-hhea-table.hh"
+#include "hb-ot-glyf-table.hh"
#include "hb-ot-hmtx-table.hh"
+#include "hb-ot-kern-table.hh"
+#include "hb-ot-post-table.hh"
-
-struct hb_ot_face_metrics_accelerator_t
-{
- unsigned int num_metrics;
- unsigned int num_advances;
- unsigned int default_advance;
- const OT::_mtx *table;
- hb_blob_t *blob;
-
- inline void init (hb_face_t *face,
- hb_tag_t _hea_tag, hb_tag_t _mtx_tag,
- unsigned int default_advance)
- {
- this->default_advance = default_advance;
- this->num_metrics = face->get_num_glyphs ();
-
- hb_blob_t *_hea_blob = OT::Sanitizer<OT::_hea>::sanitize (face->reference_table (_hea_tag));
- const OT::_hea *_hea = OT::Sanitizer<OT::_hea>::lock_instance (_hea_blob);
- this->num_advances = _hea->numberOfLongMetrics;
- hb_blob_destroy (_hea_blob);
-
- this->blob = OT::Sanitizer<OT::_mtx>::sanitize (face->reference_table (_mtx_tag));
- if (unlikely (!this->num_advances ||
- 2 * (this->num_advances + this->num_metrics) < hb_blob_get_length (this->blob)))
- {
- this->num_metrics = this->num_advances = 0;
- hb_blob_destroy (this->blob);
- this->blob = hb_blob_get_empty ();
- }
- this->table = OT::Sanitizer<OT::_mtx>::lock_instance (this->blob);
- }
-
- inline void fini (void)
- {
- hb_blob_destroy (this->blob);
- }
-
- inline unsigned int get_advance (hb_codepoint_t glyph) const
- {
- if (unlikely (glyph >= this->num_metrics))
- {
- /* If this->num_metrics is zero, it means we don't have the metrics table
- * for this direction: return one EM. Otherwise, it means that the glyph
- * index is out of bound: return zero. */
- if (this->num_metrics)
- return 0;
- else
- return this->default_advance;
- }
-
- if (glyph >= this->num_advances)
- glyph = this->num_advances - 1;
-
- return this->table->longMetric[glyph].advance;
- }
-};
-
-struct hb_ot_face_cmap_accelerator_t
-{
- const OT::CmapSubtable *table;
- const OT::CmapSubtable *uvs_table;
- hb_blob_t *blob;
-
- inline void init (hb_face_t *face)
- {
- this->blob = OT::Sanitizer<OT::cmap>::sanitize (face->reference_table (HB_OT_TAG_cmap));
- const OT::cmap *cmap = OT::Sanitizer<OT::cmap>::lock_instance (this->blob);
- const OT::CmapSubtable *subtable = NULL;
- const OT::CmapSubtable *subtable_uvs = NULL;
-
- /* 32-bit subtables. */
- if (!subtable) subtable = cmap->find_subtable (3, 10);
- if (!subtable) subtable = cmap->find_subtable (0, 6);
- if (!subtable) subtable = cmap->find_subtable (0, 4);
- /* 16-bit subtables. */
- if (!subtable) subtable = cmap->find_subtable (3, 1);
- if (!subtable) subtable = cmap->find_subtable (0, 3);
- if (!subtable) subtable = cmap->find_subtable (0, 2);
- if (!subtable) subtable = cmap->find_subtable (0, 1);
- if (!subtable) subtable = cmap->find_subtable (0, 0);
- /* Meh. */
- if (!subtable) subtable = &OT::Null(OT::CmapSubtable);
-
- /* UVS subtable. */
- if (!subtable_uvs) subtable_uvs = cmap->find_subtable (0, 5);
- /* Meh. */
- if (!subtable_uvs) subtable_uvs = &OT::Null(OT::CmapSubtable);
-
- this->table = subtable;
- this->uvs_table = subtable_uvs;
- }
-
- inline void fini (void)
- {
- hb_blob_destroy (this->blob);
- }
-
- inline bool get_glyph (hb_codepoint_t unicode,
- hb_codepoint_t variation_selector,
- hb_codepoint_t *glyph) const
- {
- if (unlikely (variation_selector))
- {
- switch (this->uvs_table->get_glyph_variant (unicode,
- variation_selector,
- glyph))
- {
- case OT::GLYPH_VARIANT_NOT_FOUND: return false;
- case OT::GLYPH_VARIANT_FOUND: return true;
- case OT::GLYPH_VARIANT_USE_DEFAULT: break;
- }
- }
-
- return this->table->get_glyph (unicode, glyph);
- }
-};
+#include "hb-ot-color-cbdt-table.hh"
struct hb_ot_font_t
{
- hb_ot_face_cmap_accelerator_t cmap;
- hb_ot_face_metrics_accelerator_t h_metrics;
- hb_ot_face_metrics_accelerator_t v_metrics;
+ OT::cmap::accelerator_t cmap;
+ OT::hmtx::accelerator_t h_metrics;
+ OT::vmtx::accelerator_t v_metrics;
+ OT::hb_lazy_loader_t<OT::glyf::accelerator_t> glyf;
+ OT::hb_lazy_loader_t<OT::CBDT::accelerator_t> cbdt;
+ OT::hb_lazy_loader_t<OT::post::accelerator_t> post;
+ OT::hb_lazy_loader_t<OT::kern::accelerator_t> kern;
};
static hb_ot_font_t *
-_hb_ot_font_create (hb_font_t *font)
+_hb_ot_font_create (hb_face_t *face)
{
hb_ot_font_t *ot_font = (hb_ot_font_t *) calloc (1, sizeof (hb_ot_font_t));
- hb_face_t *face = font->face;
if (unlikely (!ot_font))
- return NULL;
-
- unsigned int upem = face->get_upem ();
+ return nullptr;
ot_font->cmap.init (face);
- ot_font->h_metrics.init (face, HB_OT_TAG_hhea, HB_OT_TAG_hmtx, upem>>1);
- ot_font->v_metrics.init (face, HB_OT_TAG_vhea, HB_OT_TAG_vmtx, upem); /* TODO Can we do this lazily? */
+ ot_font->h_metrics.init (face);
+ ot_font->v_metrics.init (face, ot_font->h_metrics.ascender - ot_font->h_metrics.descender); /* TODO Can we do this lazily? */
+ ot_font->glyf.init (face);
+ ot_font->cbdt.init (face);
+ ot_font->post.init (face);
+ ot_font->kern.init (face);
return ot_font;
}
static void
-_hb_ot_font_destroy (hb_ot_font_t *ot_font)
+_hb_ot_font_destroy (void *data)
{
+ hb_ot_font_t *ot_font = (hb_ot_font_t *) data;
+
ot_font->cmap.fini ();
ot_font->h_metrics.fini ();
ot_font->v_metrics.fini ();
+ ot_font->glyf.fini ();
+ ot_font->cbdt.fini ();
+ ot_font->post.fini ();
+ ot_font->kern.fini ();
free (ot_font);
}
static hb_bool_t
-hb_ot_get_glyph (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t unicode,
- hb_codepoint_t variation_selector,
- hb_codepoint_t *glyph,
- void *user_data HB_UNUSED)
+hb_ot_get_nominal_glyph (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ hb_codepoint_t unicode,
+ hb_codepoint_t *glyph,
+ void *user_data HB_UNUSED)
{
const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
- return ot_font->cmap.get_glyph (unicode, variation_selector, glyph);
+ return ot_font->cmap.get_nominal_glyph (unicode, glyph);
}
-static hb_position_t
-hb_ot_get_glyph_h_advance (hb_font_t *font HB_UNUSED,
+static hb_bool_t
+hb_ot_get_variation_glyph (hb_font_t *font HB_UNUSED,
void *font_data,
- hb_codepoint_t glyph,
+ hb_codepoint_t unicode,
+ hb_codepoint_t variation_selector,
+ hb_codepoint_t *glyph,
void *user_data HB_UNUSED)
{
const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
- return font->em_scale_x (ot_font->h_metrics.get_advance (glyph));
+ return ot_font->cmap.get_variation_glyph (unicode, variation_selector, glyph);
}
static hb_position_t
-hb_ot_get_glyph_v_advance (hb_font_t *font HB_UNUSED,
+hb_ot_get_glyph_h_advance (hb_font_t *font,
void *font_data,
hb_codepoint_t glyph,
void *user_data HB_UNUSED)
{
const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
- return font->em_scale_y (-ot_font->v_metrics.get_advance (glyph));
+ return font->em_scale_x (ot_font->h_metrics.get_advance (glyph, font));
}
-static hb_bool_t
-hb_ot_get_glyph_h_origin (hb_font_t *font HB_UNUSED,
- void *font_data HB_UNUSED,
- hb_codepoint_t glyph HB_UNUSED,
- hb_position_t *x HB_UNUSED,
- hb_position_t *y HB_UNUSED,
- void *user_data HB_UNUSED)
-{
- /* We always work in the horizontal coordinates. */
- return true;
-}
-
-static hb_bool_t
-hb_ot_get_glyph_v_origin (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t glyph,
- hb_position_t *x,
- hb_position_t *y,
- void *user_data HB_UNUSED)
+static hb_position_t
+hb_ot_get_glyph_v_advance (hb_font_t *font,
+ void *font_data,
+ hb_codepoint_t glyph,
+ void *user_data HB_UNUSED)
{
- /* TODO */
- return false;
+ const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
+ return font->em_scale_y (-(int) ot_font->v_metrics.get_advance (glyph, font));
}
static hb_position_t
hb_codepoint_t right_glyph,
void *user_data HB_UNUSED)
{
- /* TODO */
- return 0;
-}
-
-static hb_position_t
-hb_ot_get_glyph_v_kerning (hb_font_t *font HB_UNUSED,
- void *font_data HB_UNUSED,
- hb_codepoint_t top_glyph HB_UNUSED,
- hb_codepoint_t bottom_glyph HB_UNUSED,
- void *user_data HB_UNUSED)
-{
- /* OpenType doesn't have vertical-kerning other than GPOS. */
- return 0;
+ const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
+ return font->em_scale_x (ot_font->kern->get_h_kerning (left_glyph, right_glyph));
}
static hb_bool_t
hb_glyph_extents_t *extents,
void *user_data HB_UNUSED)
{
- /* TODO */
- return false;
+ const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
+ bool ret = ot_font->glyf->get_extents (glyph, extents);
+ if (!ret)
+ ret = ot_font->cbdt->get_extents (glyph, extents);
+ // TODO Hook up side-bearings variations.
+ extents->x_bearing = font->em_scale_x (extents->x_bearing);
+ extents->y_bearing = font->em_scale_y (extents->y_bearing);
+ extents->width = font->em_scale_x (extents->width);
+ extents->height = font->em_scale_y (extents->height);
+ return ret;
}
static hb_bool_t
-hb_ot_get_glyph_contour_point (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t glyph,
- unsigned int point_index,
- hb_position_t *x,
- hb_position_t *y,
- void *user_data HB_UNUSED)
+hb_ot_get_glyph_name (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ hb_codepoint_t glyph,
+ char *name, unsigned int size,
+ void *user_data HB_UNUSED)
{
- /* TODO */
- return false;
+ const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
+ return ot_font->post->get_glyph_name (glyph, name, size);
}
static hb_bool_t
-hb_ot_get_glyph_name (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t glyph,
- char *name, unsigned int size,
- void *user_data HB_UNUSED)
+hb_ot_get_glyph_from_name (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ const char *name, int len,
+ hb_codepoint_t *glyph,
+ void *user_data HB_UNUSED)
{
- /* TODO */
- return false;
+ const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
+ return ot_font->post->get_glyph_from_name (name, len, glyph);
}
static hb_bool_t
-hb_ot_get_glyph_from_name (hb_font_t *font HB_UNUSED,
- void *font_data,
- const char *name, int len, /* -1 means nul-terminated */
- hb_codepoint_t *glyph,
- void *user_data HB_UNUSED)
+hb_ot_get_font_h_extents (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ hb_font_extents_t *metrics,
+ void *user_data HB_UNUSED)
{
- /* TODO */
- return false;
+ const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
+ metrics->ascender = font->em_scale_y (ot_font->h_metrics.ascender);
+ metrics->descender = font->em_scale_y (ot_font->h_metrics.descender);
+ metrics->line_gap = font->em_scale_y (ot_font->h_metrics.line_gap);
+ // TODO Hook up variations.
+ return ot_font->h_metrics.has_font_extents;
}
+static hb_bool_t
+hb_ot_get_font_v_extents (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ hb_font_extents_t *metrics,
+ void *user_data HB_UNUSED)
+{
+ const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
+ metrics->ascender = font->em_scale_x (ot_font->v_metrics.ascender);
+ metrics->descender = font->em_scale_x (ot_font->v_metrics.descender);
+ metrics->line_gap = font->em_scale_x (ot_font->v_metrics.line_gap);
+ // TODO Hook up variations.
+ return ot_font->v_metrics.has_font_extents;
+}
+
+static hb_font_funcs_t *static_ot_funcs = nullptr;
+
+#ifdef HB_USE_ATEXIT
+static
+void free_static_ot_funcs (void)
+{
+ hb_font_funcs_destroy (static_ot_funcs);
+}
+#endif
static hb_font_funcs_t *
_hb_ot_get_font_funcs (void)
{
- static const hb_font_funcs_t ot_ffuncs = {
- HB_OBJECT_HEADER_STATIC,
+retry:
+ hb_font_funcs_t *funcs = (hb_font_funcs_t *) hb_atomic_ptr_get (&static_ot_funcs);
- true, /* immutable */
-
- {
-#define HB_FONT_FUNC_IMPLEMENT(name) hb_ot_get_##name,
- HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
-#undef HB_FONT_FUNC_IMPLEMENT
+ if (unlikely (!funcs))
+ {
+ funcs = hb_font_funcs_create ();
+
+ hb_font_funcs_set_font_h_extents_func (funcs, hb_ot_get_font_h_extents, nullptr, nullptr);
+ hb_font_funcs_set_font_v_extents_func (funcs, hb_ot_get_font_v_extents, nullptr, nullptr);
+ hb_font_funcs_set_nominal_glyph_func (funcs, hb_ot_get_nominal_glyph, nullptr, nullptr);
+ hb_font_funcs_set_variation_glyph_func (funcs, hb_ot_get_variation_glyph, nullptr, nullptr);
+ hb_font_funcs_set_glyph_h_advance_func (funcs, hb_ot_get_glyph_h_advance, nullptr, nullptr);
+ hb_font_funcs_set_glyph_v_advance_func (funcs, hb_ot_get_glyph_v_advance, nullptr, nullptr);
+ //hb_font_funcs_set_glyph_h_origin_func (funcs, hb_ot_get_glyph_h_origin, nullptr, nullptr);
+ //hb_font_funcs_set_glyph_v_origin_func (funcs, hb_ot_get_glyph_v_origin, nullptr, nullptr);
+ hb_font_funcs_set_glyph_h_kerning_func (funcs, hb_ot_get_glyph_h_kerning, nullptr, nullptr);
+ //hb_font_funcs_set_glyph_v_kerning_func (funcs, hb_ot_get_glyph_v_kerning, nullptr, nullptr);
+ hb_font_funcs_set_glyph_extents_func (funcs, hb_ot_get_glyph_extents, nullptr, nullptr);
+ //hb_font_funcs_set_glyph_contour_point_func (funcs, hb_ot_get_glyph_contour_point, nullptr, nullptr);
+ hb_font_funcs_set_glyph_name_func (funcs, hb_ot_get_glyph_name, nullptr, nullptr);
+ hb_font_funcs_set_glyph_from_name_func (funcs, hb_ot_get_glyph_from_name, nullptr, nullptr);
+
+ hb_font_funcs_make_immutable (funcs);
+
+ if (!hb_atomic_ptr_cmpexch (&static_ot_funcs, nullptr, funcs)) {
+ hb_font_funcs_destroy (funcs);
+ goto retry;
}
+
+#ifdef HB_USE_ATEXIT
+ atexit (free_static_ot_funcs); /* First person registers atexit() callback. */
+#endif
};
- return const_cast<hb_font_funcs_t *> (&ot_ffuncs);
+ return funcs;
}
+/**
+ * hb_ot_font_set_funcs:
+ *
+ * Since: 0.9.28
+ **/
void
hb_ot_font_set_funcs (hb_font_t *font)
{
- hb_ot_font_t *ot_font = _hb_ot_font_create (font);
+ hb_ot_font_t *ot_font = _hb_ot_font_create (font->face);
if (unlikely (!ot_font))
return;
hb_font_set_funcs (font,
_hb_ot_get_font_funcs (),
ot_font,
- (hb_destroy_func_t) _hb_ot_font_destroy);
+ _hb_ot_font_destroy);
}
projects / platform / upstream / harfbuzz.git / blobdiff