diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-ot-font.cc')
-rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-ot-font.cc | 345 |
1 files changed, 197 insertions, 148 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-font.cc b/src/3rdparty/harfbuzz-ng/src/hb-ot-font.cc index 9864064b11..96f94e4a9e 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-ot-font.cc +++ b/src/3rdparty/harfbuzz-ng/src/hb-ot-font.cc @@ -24,66 +24,39 @@ * Google Author(s): Behdad Esfahbod, Roozbeh Pournader */ -#include "hb-private.hh" +#include "hb.hh" + +#ifndef HB_NO_OT_FONT #include "hb-ot.h" -#include "hb-font-private.hh" +#include "hb-font.hh" +#include "hb-machinery.hh" +#include "hb-ot-face.hh" #include "hb-ot-cmap-table.hh" -#include "hb-ot-cbdt-table.hh" #include "hb-ot-glyf-table.hh" +#include "hb-ot-cff1-table.hh" +#include "hb-ot-cff2-table.hh" #include "hb-ot-hmtx-table.hh" -#include "hb-ot-kern-table.hh" +#include "hb-ot-os2-table.hh" #include "hb-ot-post-table.hh" +#include "hb-ot-stat-table.hh" // Just so we compile it; unused otherwise. +#include "hb-ot-vorg-table.hh" +#include "hb-ot-color-cbdt-table.hh" +#include "hb-ot-color-sbix-table.hh" -struct hb_ot_font_t -{ - 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_face_t *face) -{ - hb_ot_font_t *ot_font = (hb_ot_font_t *) calloc (1, sizeof (hb_ot_font_t)); - - if (unlikely (!ot_font)) - return nullptr; - - ot_font->cmap.init (face); - 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 (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); -} +/** + * SECTION:hb-ot-font + * @title: hb-ot-font + * @short_description: OpenType font implementation + * @include: hb-ot.h + * + * Functions for using OpenType fonts with hb_shape(). Note that fonts returned + * by hb_font_create() default to using these functions, so most clients would + * never need to call these functions directly. + **/ static hb_bool_t @@ -92,10 +65,25 @@ hb_ot_get_nominal_glyph (hb_font_t *font HB_UNUSED, hb_codepoint_t unicode, hb_codepoint_t *glyph, void *user_data HB_UNUSED) +{ + const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + return ot_face->cmap->get_nominal_glyph (unicode, glyph); +} +static unsigned int +hb_ot_get_nominal_glyphs (hb_font_t *font HB_UNUSED, + void *font_data, + unsigned int count, + const hb_codepoint_t *first_unicode, + unsigned int unicode_stride, + hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + void *user_data HB_UNUSED) { - const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data; - return ot_font->cmap.get_nominal_glyph (unicode, glyph); + const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + return ot_face->cmap->get_nominal_glyphs (count, + first_unicode, unicode_stride, + first_glyph, glyph_stride); } static hb_bool_t @@ -106,158 +94,206 @@ hb_ot_get_variation_glyph (hb_font_t *font HB_UNUSED, 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_variation_glyph (unicode, variation_selector, glyph); + const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + return ot_face->cmap->get_variation_glyph (unicode, variation_selector, glyph); } -static hb_position_t -hb_ot_get_glyph_h_advance (hb_font_t *font, - void *font_data, - hb_codepoint_t glyph, - void *user_data HB_UNUSED) +static void +hb_ot_get_glyph_h_advances (hb_font_t* font, void* font_data, + unsigned count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride, + 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, font)); + const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + const OT::hmtx_accelerator_t &hmtx = *ot_face->hmtx; + + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->em_scale_x (hmtx.get_advance (*first_glyph, font)); + first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride); + first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride); + } } -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) +static void +hb_ot_get_glyph_v_advances (hb_font_t* font, void* font_data, + unsigned count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride, + void *user_data HB_UNUSED) { - 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)); + const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + const OT::vmtx_accelerator_t &vmtx = *ot_face->vmtx; + + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->em_scale_y (-(int) vmtx.get_advance (*first_glyph, font)); + first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride); + first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride); + } } -static hb_position_t -hb_ot_get_glyph_h_kerning (hb_font_t *font, - void *font_data, - hb_codepoint_t left_glyph, - hb_codepoint_t right_glyph, - void *user_data HB_UNUSED) +static hb_bool_t +hb_ot_get_glyph_v_origin (hb_font_t *font, + void *font_data, + hb_codepoint_t glyph, + hb_position_t *x, + hb_position_t *y, + 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->kern->get_h_kerning (left_glyph, right_glyph)); + const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + + *x = font->get_glyph_h_advance (glyph) / 2; + +#ifndef HB_NO_OT_FONT_CFF + const OT::VORG &VORG = *ot_face->VORG; + if (VORG.has_data ()) + { + *y = font->em_scale_y (VORG.get_y_origin (glyph)); + return true; + } +#endif + + hb_glyph_extents_t extents = {0}; + if (ot_face->glyf->get_extents (font, glyph, &extents)) + { + const OT::vmtx_accelerator_t &vmtx = *ot_face->vmtx; + hb_position_t tsb = vmtx.get_side_bearing (font, glyph); + *y = extents.y_bearing + font->em_scale_y (tsb); + return true; + } + + hb_font_extents_t font_extents; + font->get_h_extents_with_fallback (&font_extents); + *y = font_extents.ascender; + + return true; } static hb_bool_t -hb_ot_get_glyph_extents (hb_font_t *font HB_UNUSED, +hb_ot_get_glyph_extents (hb_font_t *font, void *font_data, hb_codepoint_t glyph, hb_glyph_extents_t *extents, void *user_data HB_UNUSED) { - 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); + const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + bool ret = false; + +#if !defined(HB_NO_OT_FONT_BITMAP) && !defined(HB_NO_COLOR) + if (!ret) ret = ot_face->sbix->get_extents (font, glyph, extents); +#endif + if (!ret) ret = ot_face->glyf->get_extents (font, glyph, extents); +#ifndef HB_NO_OT_FONT_CFF + if (!ret) ret = ot_face->cff1->get_extents (font, glyph, extents); + if (!ret) ret = ot_face->cff2->get_extents (font, glyph, extents); +#endif +#if !defined(HB_NO_OT_FONT_BITMAP) && !defined(HB_NO_COLOR) + if (!ret) ret = ot_face->CBDT->get_extents (font, glyph, extents); +#endif + // 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; } +#ifndef HB_NO_OT_FONT_GLYPH_NAMES 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) + void *font_data, + hb_codepoint_t glyph, + char *name, unsigned int size, + void *user_data HB_UNUSED) { - const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data; - return ot_font->post->get_glyph_name (glyph, name, size); + const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + return ot_face->post->get_glyph_name (glyph, name, size); } - static hb_bool_t 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) + void *font_data, + const char *name, int len, + 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->post->get_glyph_from_name (name, len, glyph); + const hb_ot_face_t *ot_face = (const hb_ot_face_t *) font_data; + return ot_face->post->get_glyph_from_name (name, len, glyph); } +#endif static hb_bool_t -hb_ot_get_font_h_extents (hb_font_t *font HB_UNUSED, - void *font_data, +hb_ot_get_font_h_extents (hb_font_t *font, + void *font_data HB_UNUSED, 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_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; + return _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_HORIZONTAL_ASCENDER, &metrics->ascender) && + _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_HORIZONTAL_DESCENDER, &metrics->descender) && + _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_HORIZONTAL_LINE_GAP, &metrics->line_gap); } static hb_bool_t -hb_ot_get_font_v_extents (hb_font_t *font HB_UNUSED, - void *font_data, +hb_ot_get_font_v_extents (hb_font_t *font, + void *font_data HB_UNUSED, 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; + return _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_VERTICAL_ASCENDER, &metrics->ascender) && + _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_VERTICAL_DESCENDER, &metrics->descender) && + _hb_ot_metrics_get_position_common (font, HB_OT_METRICS_TAG_VERTICAL_LINE_GAP, &metrics->line_gap); } -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); -} +#if HB_USE_ATEXIT +static void free_static_ot_funcs (); #endif -static hb_font_funcs_t * -_hb_ot_get_font_funcs (void) +static struct hb_ot_font_funcs_lazy_loader_t : hb_font_funcs_lazy_loader_t<hb_ot_font_funcs_lazy_loader_t> { -retry: - hb_font_funcs_t *funcs = (hb_font_funcs_t *) hb_atomic_ptr_get (&static_ot_funcs); - - if (unlikely (!funcs)) + static hb_font_funcs_t *create () { - funcs = hb_font_funcs_create (); + hb_font_funcs_t *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_nominal_glyphs_func (funcs, hb_ot_get_nominal_glyphs, 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_advances_func (funcs, hb_ot_get_glyph_h_advances, nullptr, nullptr); + hb_font_funcs_set_glyph_v_advances_func (funcs, hb_ot_get_glyph_v_advances, 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_v_origin_func (funcs, hb_ot_get_glyph_v_origin, 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); +#ifndef HB_NO_OT_FONT_GLYPH_NAMES 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); +#endif hb_font_funcs_make_immutable (funcs); - if (!hb_atomic_ptr_cmpexch (&static_ot_funcs, nullptr, funcs)) { - hb_font_funcs_destroy (funcs); - goto retry; - } +#if HB_USE_ATEXIT + atexit (free_static_ot_funcs); +#endif -#ifdef HB_USE_ATEXIT - atexit (free_static_ot_funcs); /* First person registers atexit() callback. */ + return funcs; + } +} static_ot_funcs; + +#if HB_USE_ATEXIT +static +void free_static_ot_funcs () +{ + static_ot_funcs.free_instance (); +} #endif - }; - return funcs; +static hb_font_funcs_t * +_hb_ot_get_font_funcs () +{ + return static_ot_funcs.get_unconst (); } @@ -269,12 +305,25 @@ retry: void hb_ot_font_set_funcs (hb_font_t *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_ot_font_destroy); + &font->face->table, + nullptr); } + +#ifndef HB_NO_VAR +int +_glyf_get_side_bearing_var (hb_font_t *font, hb_codepoint_t glyph, bool is_vertical) +{ + return font->face->table.glyf->get_side_bearing_var (font, glyph, is_vertical); +} + +unsigned +_glyf_get_advance_var (hb_font_t *font, hb_codepoint_t glyph, bool is_vertical) +{ + return font->face->table.glyf->get_advance_var (font, glyph, is_vertical); +} +#endif + + +#endif |