diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-font.cc')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-font.cc | 2186 |
1 files changed, 2186 insertions, 0 deletions
diff --git a/thirdparty/harfbuzz/src/hb-font.cc b/thirdparty/harfbuzz/src/hb-font.cc new file mode 100644 index 0000000000..27959487dc --- /dev/null +++ b/thirdparty/harfbuzz/src/hb-font.cc @@ -0,0 +1,2186 @@ +/* + * Copyright © 2009 Red Hat, Inc. + * Copyright © 2012 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Red Hat Author(s): Behdad Esfahbod + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#include "hb-font.hh" +#include "hb-machinery.hh" + +#include "hb-ot.h" + +#include "hb-ot-var-avar-table.hh" +#include "hb-ot-var-fvar-table.hh" + + +/** + * SECTION:hb-font + * @title: hb-font + * @short_description: Font objects + * @include: hb.h + * + * Font objects represent a font face at a certain size and other + * parameters (pixels per EM, points per EM, variation settings.) + * Fonts are created from font faces, and are used as input to + * hb_shape() among other things. + **/ + + +/* + * hb_font_funcs_t + */ + +static hb_bool_t +hb_font_get_font_h_extents_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_font_extents_t *extents, + void *user_data HB_UNUSED) +{ + memset (extents, 0, sizeof (*extents)); + return false; +} +static hb_bool_t +hb_font_get_font_h_extents_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_font_extents_t *extents, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_font_h_extents (extents); + if (ret) { + extents->ascender = font->parent_scale_y_distance (extents->ascender); + extents->descender = font->parent_scale_y_distance (extents->descender); + extents->line_gap = font->parent_scale_y_distance (extents->line_gap); + } + return ret; +} + +static hb_bool_t +hb_font_get_font_v_extents_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_font_extents_t *extents, + void *user_data HB_UNUSED) +{ + memset (extents, 0, sizeof (*extents)); + return false; +} +static hb_bool_t +hb_font_get_font_v_extents_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_font_extents_t *extents, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_font_v_extents (extents); + if (ret) { + extents->ascender = font->parent_scale_x_distance (extents->ascender); + extents->descender = font->parent_scale_x_distance (extents->descender); + extents->line_gap = font->parent_scale_x_distance (extents->line_gap); + } + return ret; +} + +static hb_bool_t +hb_font_get_nominal_glyph_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t unicode HB_UNUSED, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + *glyph = 0; + return false; +} +static hb_bool_t +hb_font_get_nominal_glyph_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t unicode, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + if (font->has_nominal_glyphs_func_set ()) + { + return font->get_nominal_glyphs (1, &unicode, 0, glyph, 0); + } + return font->parent->get_nominal_glyph (unicode, glyph); +} + +#define hb_font_get_nominal_glyphs_nil hb_font_get_nominal_glyphs_default +static unsigned int +hb_font_get_nominal_glyphs_default (hb_font_t *font, + void *font_data HB_UNUSED, + 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) +{ + if (font->has_nominal_glyph_func_set ()) + { + for (unsigned int i = 0; i < count; i++) + { + if (!font->get_nominal_glyph (*first_unicode, first_glyph)) + return i; + + first_unicode = &StructAtOffsetUnaligned<hb_codepoint_t> (first_unicode, unicode_stride); + first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride); + } + return count; + } + + return font->parent->get_nominal_glyphs (count, + first_unicode, unicode_stride, + first_glyph, glyph_stride); +} + +static hb_bool_t +hb_font_get_variation_glyph_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t unicode HB_UNUSED, + hb_codepoint_t variation_selector HB_UNUSED, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + *glyph = 0; + return false; +} +static hb_bool_t +hb_font_get_variation_glyph_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t unicode, + hb_codepoint_t variation_selector, + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + return font->parent->get_variation_glyph (unicode, variation_selector, glyph); +} + + +static hb_position_t +hb_font_get_glyph_h_advance_nil (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + void *user_data HB_UNUSED) +{ + return font->x_scale; +} +static hb_position_t +hb_font_get_glyph_h_advance_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + void *user_data HB_UNUSED) +{ + if (font->has_glyph_h_advances_func_set ()) + { + hb_position_t ret; + font->get_glyph_h_advances (1, &glyph, 0, &ret, 0); + return ret; + } + return font->parent_scale_x_distance (font->parent->get_glyph_h_advance (glyph)); +} + +static hb_position_t +hb_font_get_glyph_v_advance_nil (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + void *user_data HB_UNUSED) +{ + /* TODO use font_extents.ascender+descender */ + return font->y_scale; +} +static hb_position_t +hb_font_get_glyph_v_advance_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + void *user_data HB_UNUSED) +{ + if (font->has_glyph_v_advances_func_set ()) + { + hb_position_t ret; + font->get_glyph_v_advances (1, &glyph, 0, &ret, 0); + return ret; + } + return font->parent_scale_y_distance (font->parent->get_glyph_v_advance (glyph)); +} + +#define hb_font_get_glyph_h_advances_nil hb_font_get_glyph_h_advances_default +static void +hb_font_get_glyph_h_advances_default (hb_font_t* font, + void* font_data HB_UNUSED, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + hb_position_t *first_advance, + unsigned int advance_stride, + void *user_data HB_UNUSED) +{ + if (font->has_glyph_h_advance_func_set ()) + { + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->get_glyph_h_advance (*first_glyph); + first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride); + first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride); + } + return; + } + + font->parent->get_glyph_h_advances (count, + first_glyph, glyph_stride, + first_advance, advance_stride); + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->parent_scale_x_distance (*first_advance); + first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride); + } +} + +#define hb_font_get_glyph_v_advances_nil hb_font_get_glyph_v_advances_default +static void +hb_font_get_glyph_v_advances_default (hb_font_t* font, + void* font_data HB_UNUSED, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned int glyph_stride, + hb_position_t *first_advance, + unsigned int advance_stride, + void *user_data HB_UNUSED) +{ + if (font->has_glyph_v_advance_func_set ()) + { + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->get_glyph_v_advance (*first_glyph); + first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride); + first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride); + } + return; + } + + font->parent->get_glyph_v_advances (count, + first_glyph, glyph_stride, + first_advance, advance_stride); + for (unsigned int i = 0; i < count; i++) + { + *first_advance = font->parent_scale_y_distance (*first_advance); + first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride); + } +} + +static hb_bool_t +hb_font_get_glyph_h_origin_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + *x = *y = 0; + return true; +} +static hb_bool_t +hb_font_get_glyph_h_origin_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_glyph_h_origin (glyph, x, y); + if (ret) + font->parent_scale_position (x, y); + return ret; +} + +static hb_bool_t +hb_font_get_glyph_v_origin_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + *x = *y = 0; + return false; +} +static hb_bool_t +hb_font_get_glyph_v_origin_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_glyph_v_origin (glyph, x, y); + if (ret) + font->parent_scale_position (x, y); + return ret; +} + +static hb_position_t +hb_font_get_glyph_h_kerning_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t left_glyph HB_UNUSED, + hb_codepoint_t right_glyph HB_UNUSED, + void *user_data HB_UNUSED) +{ + return 0; +} +static hb_position_t +hb_font_get_glyph_h_kerning_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t left_glyph, + hb_codepoint_t right_glyph, + void *user_data HB_UNUSED) +{ + return font->parent_scale_x_distance (font->parent->get_glyph_h_kerning (left_glyph, right_glyph)); +} + +#ifndef HB_DISABLE_DEPRECATED +static hb_position_t +hb_font_get_glyph_v_kerning_nil (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) +{ + return 0; +} +static hb_position_t +hb_font_get_glyph_v_kerning_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t top_glyph, + hb_codepoint_t bottom_glyph, + void *user_data HB_UNUSED) +{ + return font->parent_scale_y_distance (font->parent->get_glyph_v_kerning (top_glyph, bottom_glyph)); +} +#endif + +static hb_bool_t +hb_font_get_glyph_extents_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + hb_glyph_extents_t *extents, + void *user_data HB_UNUSED) +{ + memset (extents, 0, sizeof (*extents)); + return false; +} +static hb_bool_t +hb_font_get_glyph_extents_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_glyph_extents (glyph, extents); + if (ret) { + font->parent_scale_position (&extents->x_bearing, &extents->y_bearing); + font->parent_scale_distance (&extents->width, &extents->height); + } + return ret; +} + +static hb_bool_t +hb_font_get_glyph_contour_point_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + unsigned int point_index HB_UNUSED, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + *x = *y = 0; + return false; +} +static hb_bool_t +hb_font_get_glyph_contour_point_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + unsigned int point_index, + hb_position_t *x, + hb_position_t *y, + void *user_data HB_UNUSED) +{ + hb_bool_t ret = font->parent->get_glyph_contour_point (glyph, point_index, x, y); + if (ret) + font->parent_scale_position (x, y); + return ret; +} + +static hb_bool_t +hb_font_get_glyph_name_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + hb_codepoint_t glyph HB_UNUSED, + char *name, unsigned int size, + void *user_data HB_UNUSED) +{ + if (size) *name = '\0'; + return false; +} +static hb_bool_t +hb_font_get_glyph_name_default (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + char *name, unsigned int size, + void *user_data HB_UNUSED) +{ + return font->parent->get_glyph_name (glyph, name, size); +} + +static hb_bool_t +hb_font_get_glyph_from_name_nil (hb_font_t *font HB_UNUSED, + void *font_data HB_UNUSED, + const char *name HB_UNUSED, + int len HB_UNUSED, /* -1 means nul-terminated */ + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + *glyph = 0; + return false; +} +static hb_bool_t +hb_font_get_glyph_from_name_default (hb_font_t *font, + void *font_data HB_UNUSED, + const char *name, int len, /* -1 means nul-terminated */ + hb_codepoint_t *glyph, + void *user_data HB_UNUSED) +{ + return font->parent->get_glyph_from_name (name, len, glyph); +} + +DEFINE_NULL_INSTANCE (hb_font_funcs_t) = +{ + HB_OBJECT_HEADER_STATIC, + + { +#define HB_FONT_FUNC_IMPLEMENT(name) nullptr, + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + }, + { +#define HB_FONT_FUNC_IMPLEMENT(name) nullptr, + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + }, + { + { +#define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_nil, + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + } + } +}; + +static const hb_font_funcs_t _hb_font_funcs_default = { + HB_OBJECT_HEADER_STATIC, + + { +#define HB_FONT_FUNC_IMPLEMENT(name) nullptr, + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + }, + { +#define HB_FONT_FUNC_IMPLEMENT(name) nullptr, + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + }, + { + { +#define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_default, + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + } + } +}; + + +/** + * hb_font_funcs_create: (Xconstructor) + * + * + * + * Return value: (transfer full): + * + * Since: 0.9.2 + **/ +hb_font_funcs_t * +hb_font_funcs_create () +{ + hb_font_funcs_t *ffuncs; + + if (!(ffuncs = hb_object_create<hb_font_funcs_t> ())) + return hb_font_funcs_get_empty (); + + ffuncs->get = _hb_font_funcs_default.get; + + return ffuncs; +} + +/** + * hb_font_funcs_get_empty: + * + * + * + * Return value: (transfer full): + * + * Since: 0.9.2 + **/ +hb_font_funcs_t * +hb_font_funcs_get_empty () +{ + return const_cast<hb_font_funcs_t *> (&_hb_font_funcs_default); +} + +/** + * hb_font_funcs_reference: (skip) + * @ffuncs: font functions. + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_font_funcs_t * +hb_font_funcs_reference (hb_font_funcs_t *ffuncs) +{ + return hb_object_reference (ffuncs); +} + +/** + * hb_font_funcs_destroy: (skip) + * @ffuncs: font functions. + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_funcs_destroy (hb_font_funcs_t *ffuncs) +{ + if (!hb_object_destroy (ffuncs)) return; + +#define HB_FONT_FUNC_IMPLEMENT(name) if (ffuncs->destroy.name) \ + ffuncs->destroy.name (ffuncs->user_data.name); + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + + free (ffuncs); +} + +/** + * hb_font_funcs_set_user_data: (skip) + * @ffuncs: font functions. + * @key: + * @data: + * @destroy: + * @replace: + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace) +{ + return hb_object_set_user_data (ffuncs, key, data, destroy, replace); +} + +/** + * hb_font_funcs_get_user_data: (skip) + * @ffuncs: font functions. + * @key: + * + * + * + * Return value: (transfer none): + * + * Since: 0.9.2 + **/ +void * +hb_font_funcs_get_user_data (hb_font_funcs_t *ffuncs, + hb_user_data_key_t *key) +{ + return hb_object_get_user_data (ffuncs, key); +} + + +/** + * hb_font_funcs_make_immutable: + * @ffuncs: font functions. + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs) +{ + if (hb_object_is_immutable (ffuncs)) + return; + + hb_object_make_immutable (ffuncs); +} + +/** + * hb_font_funcs_is_immutable: + * @ffuncs: font functions. + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs) +{ + return hb_object_is_immutable (ffuncs); +} + + +#define HB_FONT_FUNC_IMPLEMENT(name) \ + \ +void \ +hb_font_funcs_set_##name##_func (hb_font_funcs_t *ffuncs, \ + hb_font_get_##name##_func_t func, \ + void *user_data, \ + hb_destroy_func_t destroy) \ +{ \ + if (hb_object_is_immutable (ffuncs)) \ + { \ + if (destroy) \ + destroy (user_data); \ + return; \ + } \ + \ + if (ffuncs->destroy.name) \ + ffuncs->destroy.name (ffuncs->user_data.name); \ + \ + if (func) { \ + ffuncs->get.f.name = func; \ + ffuncs->user_data.name = user_data; \ + ffuncs->destroy.name = destroy; \ + } else { \ + ffuncs->get.f.name = hb_font_get_##name##_default; \ + ffuncs->user_data.name = nullptr; \ + ffuncs->destroy.name = nullptr; \ + } \ +} + +HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + +bool +hb_font_t::has_func_set (unsigned int i) +{ + return this->klass->get.array[i] != _hb_font_funcs_default.get.array[i]; +} + +bool +hb_font_t::has_func (unsigned int i) +{ + return has_func_set (i) || + (parent && parent != &_hb_Null_hb_font_t && parent->has_func (i)); +} + +/* Public getters */ + +/** + * hb_font_get_h_extents: + * @font: a font. + * @extents: (out): + * + * + * + * Return value: + * + * Since: 1.1.3 + **/ +hb_bool_t +hb_font_get_h_extents (hb_font_t *font, + hb_font_extents_t *extents) +{ + return font->get_font_h_extents (extents); +} + +/** + * hb_font_get_v_extents: + * @font: a font. + * @extents: (out): + * + * + * + * Return value: + * + * Since: 1.1.3 + **/ +hb_bool_t +hb_font_get_v_extents (hb_font_t *font, + hb_font_extents_t *extents) +{ + return font->get_font_v_extents (extents); +} + +/** + * hb_font_get_glyph: + * @font: a font. + * @unicode: + * @variation_selector: + * @glyph: (out): + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph (hb_font_t *font, + hb_codepoint_t unicode, hb_codepoint_t variation_selector, + hb_codepoint_t *glyph) +{ + if (unlikely (variation_selector)) + return font->get_variation_glyph (unicode, variation_selector, glyph); + return font->get_nominal_glyph (unicode, glyph); +} + +/** + * hb_font_get_nominal_glyph: + * @font: a font. + * @unicode: + * @glyph: (out): + * + * + * + * Return value: + * + * Since: 1.2.3 + **/ +hb_bool_t +hb_font_get_nominal_glyph (hb_font_t *font, + hb_codepoint_t unicode, + hb_codepoint_t *glyph) +{ + return font->get_nominal_glyph (unicode, glyph); +} + +/** + * hb_font_get_nominal_glyphs: + * @font: a font. + * + * + * + * Return value: + * + * Since: 2.6.3 + **/ +unsigned int +hb_font_get_nominal_glyphs (hb_font_t *font, + unsigned int count, + const hb_codepoint_t *first_unicode, + unsigned int unicode_stride, + hb_codepoint_t *first_glyph, + unsigned int glyph_stride) +{ + return font->get_nominal_glyphs (count, + first_unicode, unicode_stride, + first_glyph, glyph_stride); +} + +/** + * hb_font_get_variation_glyph: + * @font: a font. + * @unicode: + * @variation_selector: + * @glyph: (out): + * + * + * + * Return value: + * + * Since: 1.2.3 + **/ +hb_bool_t +hb_font_get_variation_glyph (hb_font_t *font, + hb_codepoint_t unicode, hb_codepoint_t variation_selector, + hb_codepoint_t *glyph) +{ + return font->get_variation_glyph (unicode, variation_selector, glyph); +} + +/** + * hb_font_get_glyph_h_advance: + * @font: a font. + * @glyph: + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_position_t +hb_font_get_glyph_h_advance (hb_font_t *font, + hb_codepoint_t glyph) +{ + return font->get_glyph_h_advance (glyph); +} + +/** + * hb_font_get_glyph_v_advance: + * @font: a font. + * @glyph: + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_position_t +hb_font_get_glyph_v_advance (hb_font_t *font, + hb_codepoint_t glyph) +{ + return font->get_glyph_v_advance (glyph); +} + +/** + * hb_font_get_glyph_h_advances: + * @font: a font. + * + * + * + * Since: 1.8.6 + **/ +void +hb_font_get_glyph_h_advances (hb_font_t* font, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride) +{ + font->get_glyph_h_advances (count, first_glyph, glyph_stride, first_advance, advance_stride); +} +/** + * hb_font_get_glyph_v_advances: + * @font: a font. + * + * + * + * Since: 1.8.6 + **/ +void +hb_font_get_glyph_v_advances (hb_font_t* font, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride) +{ + font->get_glyph_v_advances (count, first_glyph, glyph_stride, first_advance, advance_stride); +} + +/** + * hb_font_get_glyph_h_origin: + * @font: a font. + * @glyph: + * @x: (out): + * @y: (out): + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_h_origin (hb_font_t *font, + hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y) +{ + return font->get_glyph_h_origin (glyph, x, y); +} + +/** + * hb_font_get_glyph_v_origin: + * @font: a font. + * @glyph: + * @x: (out): + * @y: (out): + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_v_origin (hb_font_t *font, + hb_codepoint_t glyph, + hb_position_t *x, hb_position_t *y) +{ + return font->get_glyph_v_origin (glyph, x, y); +} + +/** + * hb_font_get_glyph_h_kerning: + * @font: a font. + * @left_glyph: + * @right_glyph: + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_position_t +hb_font_get_glyph_h_kerning (hb_font_t *font, + hb_codepoint_t left_glyph, hb_codepoint_t right_glyph) +{ + return font->get_glyph_h_kerning (left_glyph, right_glyph); +} + +#ifndef HB_DISABLE_DEPRECATED +/** + * hb_font_get_glyph_v_kerning: + * @font: a font. + * @top_glyph: + * @bottom_glyph: + * + * + * + * Return value: + * + * Since: 0.9.2 + * Deprecated: 2.0.0 + **/ +hb_position_t +hb_font_get_glyph_v_kerning (hb_font_t *font, + hb_codepoint_t top_glyph, hb_codepoint_t bottom_glyph) +{ + return font->get_glyph_v_kerning (top_glyph, bottom_glyph); +} +#endif + +/** + * hb_font_get_glyph_extents: + * @font: a font. + * @glyph: + * @extents: (out): + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_extents (hb_font_t *font, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents) +{ + return font->get_glyph_extents (glyph, extents); +} + +/** + * hb_font_get_glyph_contour_point: + * @font: a font. + * @glyph: + * @point_index: + * @x: (out): + * @y: (out): + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_contour_point (hb_font_t *font, + hb_codepoint_t glyph, unsigned int point_index, + hb_position_t *x, hb_position_t *y) +{ + return font->get_glyph_contour_point (glyph, point_index, x, y); +} + +/** + * hb_font_get_glyph_name: + * @font: a font. + * @glyph: + * @name: (array length=size): + * @size: + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_name (hb_font_t *font, + hb_codepoint_t glyph, + char *name, unsigned int size) +{ + return font->get_glyph_name (glyph, name, size); +} + +/** + * hb_font_get_glyph_from_name: + * @font: a font. + * @name: (array length=len): + * @len: + * @glyph: (out): + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_from_name (hb_font_t *font, + const char *name, int len, /* -1 means nul-terminated */ + hb_codepoint_t *glyph) +{ + return font->get_glyph_from_name (name, len, glyph); +} + + +/* A bit higher-level, and with fallback */ + +/** + * hb_font_get_extents_for_direction: + * @font: a font. + * @direction: + * @extents: (out): + * + * + * + * Since: 1.1.3 + **/ +void +hb_font_get_extents_for_direction (hb_font_t *font, + hb_direction_t direction, + hb_font_extents_t *extents) +{ + return font->get_extents_for_direction (direction, extents); +} +/** + * hb_font_get_glyph_advance_for_direction: + * @font: a font. + * @glyph: + * @direction: + * @x: (out): + * @y: (out): + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_get_glyph_advance_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) +{ + return font->get_glyph_advance_for_direction (glyph, direction, x, y); +} +/** + * hb_font_get_glyph_advances_for_direction: + * @font: a font. + * @direction: + * + * + * + * Since: 1.8.6 + **/ +HB_EXTERN void +hb_font_get_glyph_advances_for_direction (hb_font_t* font, + hb_direction_t direction, + unsigned int count, + const hb_codepoint_t *first_glyph, + unsigned glyph_stride, + hb_position_t *first_advance, + unsigned advance_stride) +{ + font->get_glyph_advances_for_direction (direction, count, first_glyph, glyph_stride, first_advance, advance_stride); +} + +/** + * hb_font_get_glyph_origin_for_direction: + * @font: a font. + * @glyph: + * @direction: + * @x: (out): + * @y: (out): + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_get_glyph_origin_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) +{ + return font->get_glyph_origin_for_direction (glyph, direction, x, y); +} + +/** + * hb_font_add_glyph_origin_for_direction: + * @font: a font. + * @glyph: + * @direction: + * @x: (out): + * @y: (out): + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_add_glyph_origin_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) +{ + return font->add_glyph_origin_for_direction (glyph, direction, x, y); +} + +/** + * hb_font_subtract_glyph_origin_for_direction: + * @font: a font. + * @glyph: + * @direction: + * @x: (out): + * @y: (out): + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_subtract_glyph_origin_for_direction (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) +{ + return font->subtract_glyph_origin_for_direction (glyph, direction, x, y); +} + +/** + * hb_font_get_glyph_kerning_for_direction: + * @font: a font. + * @first_glyph: + * @second_glyph: + * @direction: + * @x: (out): + * @y: (out): + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_get_glyph_kerning_for_direction (hb_font_t *font, + hb_codepoint_t first_glyph, hb_codepoint_t second_glyph, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) +{ + return font->get_glyph_kerning_for_direction (first_glyph, second_glyph, direction, x, y); +} + +/** + * hb_font_get_glyph_extents_for_origin: + * @font: a font. + * @glyph: + * @direction: + * @extents: (out): + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_extents_for_origin (hb_font_t *font, + hb_codepoint_t glyph, + hb_direction_t direction, + hb_glyph_extents_t *extents) +{ + return font->get_glyph_extents_for_origin (glyph, direction, extents); +} + +/** + * hb_font_get_glyph_contour_point_for_origin: + * @font: a font. + * @glyph: + * @point_index: + * @direction: + * @x: (out): + * @y: (out): + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_get_glyph_contour_point_for_origin (hb_font_t *font, + hb_codepoint_t glyph, unsigned int point_index, + hb_direction_t direction, + hb_position_t *x, hb_position_t *y) +{ + return font->get_glyph_contour_point_for_origin (glyph, point_index, direction, x, y); +} + +/* Generates gidDDD if glyph has no name. */ +/** + * hb_font_glyph_to_string: + * @font: a font. + * @glyph: + * @s: (array length=size): + * @size: + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_glyph_to_string (hb_font_t *font, + hb_codepoint_t glyph, + char *s, unsigned int size) +{ + font->glyph_to_string (glyph, s, size); +} + +/* Parses gidDDD and uniUUUU strings automatically. */ +/** + * hb_font_glyph_from_string: + * @font: a font. + * @s: (array length=len) (element-type uint8_t): + * @len: + * @glyph: (out): + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_glyph_from_string (hb_font_t *font, + const char *s, int len, /* -1 means nul-terminated */ + hb_codepoint_t *glyph) +{ + return font->glyph_from_string (s, len, glyph); +} + + +/* + * hb_font_t + */ + +DEFINE_NULL_INSTANCE (hb_font_t) = +{ + HB_OBJECT_HEADER_STATIC, + + nullptr, /* parent */ + const_cast<hb_face_t *> (&_hb_Null_hb_face_t), + + 1000, /* x_scale */ + 1000, /* y_scale */ + 1<<16, /* x_mult */ + 1<<16, /* y_mult */ + + 0, /* x_ppem */ + 0, /* y_ppem */ + 0, /* ptem */ + + 0, /* num_coords */ + nullptr, /* coords */ + nullptr, /* design_coords */ + + const_cast<hb_font_funcs_t *> (&_hb_Null_hb_font_funcs_t), + + /* Zero for the rest is fine. */ +}; + + +static hb_font_t * +_hb_font_create (hb_face_t *face) +{ + hb_font_t *font; + + if (unlikely (!face)) + face = hb_face_get_empty (); + if (!(font = hb_object_create<hb_font_t> ())) + return hb_font_get_empty (); + + hb_face_make_immutable (face); + font->parent = hb_font_get_empty (); + font->face = hb_face_reference (face); + font->klass = hb_font_funcs_get_empty (); + font->data.init0 (font); + font->x_scale = font->y_scale = hb_face_get_upem (face); + font->x_mult = font->y_mult = 1 << 16; + + return font; +} + +/** + * hb_font_create: (Xconstructor) + * @face: a face. + * + * + * + * Return value: (transfer full): + * + * Since: 0.9.2 + **/ +hb_font_t * +hb_font_create (hb_face_t *face) +{ + hb_font_t *font = _hb_font_create (face); + +#ifndef HB_NO_OT_FONT + /* Install our in-house, very lightweight, funcs. */ + hb_ot_font_set_funcs (font); +#endif + + return font; +} + +static void +_hb_font_adopt_var_coords (hb_font_t *font, + int *coords, /* 2.14 normalized */ + float *design_coords, + unsigned int coords_length) +{ + free (font->coords); + free (font->design_coords); + + font->coords = coords; + font->design_coords = design_coords; + font->num_coords = coords_length; +} + +/** + * hb_font_create_sub_font: + * @parent: parent font. + * + * + * + * Return value: (transfer full): + * + * Since: 0.9.2 + **/ +hb_font_t * +hb_font_create_sub_font (hb_font_t *parent) +{ + if (unlikely (!parent)) + parent = hb_font_get_empty (); + + hb_font_t *font = _hb_font_create (parent->face); + + if (unlikely (hb_object_is_immutable (font))) + return font; + + font->parent = hb_font_reference (parent); + + font->x_scale = parent->x_scale; + font->y_scale = parent->y_scale; + font->mults_changed (); + font->x_ppem = parent->x_ppem; + font->y_ppem = parent->y_ppem; + font->ptem = parent->ptem; + + unsigned int num_coords = parent->num_coords; + if (num_coords) + { + int *coords = (int *) calloc (num_coords, sizeof (parent->coords[0])); + float *design_coords = (float *) calloc (num_coords, sizeof (parent->design_coords[0])); + if (likely (coords && design_coords)) + { + memcpy (coords, parent->coords, num_coords * sizeof (parent->coords[0])); + memcpy (design_coords, parent->design_coords, num_coords * sizeof (parent->design_coords[0])); + _hb_font_adopt_var_coords (font, coords, design_coords, num_coords); + } + else + { + free (coords); + free (design_coords); + } + } + + return font; +} + +/** + * hb_font_get_empty: + * + * + * + * Return value: (transfer full) + * + * Since: 0.9.2 + **/ +hb_font_t * +hb_font_get_empty () +{ + return const_cast<hb_font_t *> (&Null (hb_font_t)); +} + +/** + * hb_font_reference: (skip) + * @font: a font. + * + * + * + * Return value: (transfer full): + * + * Since: 0.9.2 + **/ +hb_font_t * +hb_font_reference (hb_font_t *font) +{ + return hb_object_reference (font); +} + +/** + * hb_font_destroy: (skip) + * @font: a font. + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_destroy (hb_font_t *font) +{ + if (!hb_object_destroy (font)) return; + + font->data.fini (); + + if (font->destroy) + font->destroy (font->user_data); + + hb_font_destroy (font->parent); + hb_face_destroy (font->face); + hb_font_funcs_destroy (font->klass); + + free (font->coords); + free (font->design_coords); + + free (font); +} + +/** + * hb_font_set_user_data: (skip) + * @font: a font. + * @key: + * @data: + * @destroy: + * @replace: + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_set_user_data (hb_font_t *font, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace) +{ + return hb_object_set_user_data (font, key, data, destroy, replace); +} + +/** + * hb_font_get_user_data: (skip) + * @font: a font. + * @key: + * + * + * + * Return value: (transfer none): + * + * Since: 0.9.2 + **/ +void * +hb_font_get_user_data (hb_font_t *font, + hb_user_data_key_t *key) +{ + return hb_object_get_user_data (font, key); +} + +/** + * hb_font_make_immutable: + * @font: a font. + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_make_immutable (hb_font_t *font) +{ + if (hb_object_is_immutable (font)) + return; + + if (font->parent) + hb_font_make_immutable (font->parent); + + hb_object_make_immutable (font); +} + +/** + * hb_font_is_immutable: + * @font: a font. + * + * + * + * Return value: + * + * Since: 0.9.2 + **/ +hb_bool_t +hb_font_is_immutable (hb_font_t *font) +{ + return hb_object_is_immutable (font); +} + +/** + * hb_font_set_parent: + * @font: a font. + * @parent: new parent. + * + * Sets parent font of @font. + * + * Since: 1.0.5 + **/ +void +hb_font_set_parent (hb_font_t *font, + hb_font_t *parent) +{ + if (hb_object_is_immutable (font)) + return; + + if (!parent) + parent = hb_font_get_empty (); + + hb_font_t *old = font->parent; + + font->parent = hb_font_reference (parent); + + hb_font_destroy (old); +} + +/** + * hb_font_get_parent: + * @font: a font. + * + * + * + * Return value: (transfer none): + * + * Since: 0.9.2 + **/ +hb_font_t * +hb_font_get_parent (hb_font_t *font) +{ + return font->parent; +} + +/** + * hb_font_set_face: + * @font: a font. + * @face: new face. + * + * Sets font-face of @font. + * + * Since: 1.4.3 + **/ +void +hb_font_set_face (hb_font_t *font, + hb_face_t *face) +{ + if (hb_object_is_immutable (font)) + return; + + if (unlikely (!face)) + face = hb_face_get_empty (); + + hb_face_t *old = font->face; + + hb_face_make_immutable (face); + font->face = hb_face_reference (face); + font->mults_changed (); + + hb_face_destroy (old); +} + +/** + * hb_font_get_face: + * @font: a font. + * + * + * + * Return value: (transfer none): + * + * Since: 0.9.2 + **/ +hb_face_t * +hb_font_get_face (hb_font_t *font) +{ + return font->face; +} + + +/** + * hb_font_set_funcs: + * @font: a font. + * @klass: (closure font_data) (destroy destroy) (scope notified): + * @font_data: + * @destroy: + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_set_funcs (hb_font_t *font, + hb_font_funcs_t *klass, + void *font_data, + hb_destroy_func_t destroy) +{ + if (hb_object_is_immutable (font)) + { + if (destroy) + destroy (font_data); + return; + } + + if (font->destroy) + font->destroy (font->user_data); + + if (!klass) + klass = hb_font_funcs_get_empty (); + + hb_font_funcs_reference (klass); + hb_font_funcs_destroy (font->klass); + font->klass = klass; + font->user_data = font_data; + font->destroy = destroy; +} + +/** + * hb_font_set_funcs_data: + * @font: a font. + * @font_data: (destroy destroy) (scope notified): + * @destroy: + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_set_funcs_data (hb_font_t *font, + void *font_data, + hb_destroy_func_t destroy) +{ + /* Destroy user_data? */ + if (hb_object_is_immutable (font)) + { + if (destroy) + destroy (font_data); + return; + } + + if (font->destroy) + font->destroy (font->user_data); + + font->user_data = font_data; + font->destroy = destroy; +} + + +/** + * hb_font_set_scale: + * @font: a font. + * @x_scale: + * @y_scale: + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_set_scale (hb_font_t *font, + int x_scale, + int y_scale) +{ + if (hb_object_is_immutable (font)) + return; + + font->x_scale = x_scale; + font->y_scale = y_scale; + font->mults_changed (); +} + +/** + * hb_font_get_scale: + * @font: a font. + * @x_scale: (out): + * @y_scale: (out): + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_get_scale (hb_font_t *font, + int *x_scale, + int *y_scale) +{ + if (x_scale) *x_scale = font->x_scale; + if (y_scale) *y_scale = font->y_scale; +} + +/** + * hb_font_set_ppem: + * @font: a font. + * @x_ppem: + * @y_ppem: + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_set_ppem (hb_font_t *font, + unsigned int x_ppem, + unsigned int y_ppem) +{ + if (hb_object_is_immutable (font)) + return; + + font->x_ppem = x_ppem; + font->y_ppem = y_ppem; +} + +/** + * hb_font_get_ppem: + * @font: a font. + * @x_ppem: (out): + * @y_ppem: (out): + * + * + * + * Since: 0.9.2 + **/ +void +hb_font_get_ppem (hb_font_t *font, + unsigned int *x_ppem, + unsigned int *y_ppem) +{ + if (x_ppem) *x_ppem = font->x_ppem; + if (y_ppem) *y_ppem = font->y_ppem; +} + +/** + * hb_font_set_ptem: + * @font: a font. + * @ptem: font size in points. + * + * Sets "point size" of the font. Set to 0 to unset. + * + * There are 72 points in an inch. + * + * Since: 1.6.0 + **/ +void +hb_font_set_ptem (hb_font_t *font, float ptem) +{ + if (hb_object_is_immutable (font)) + return; + + font->ptem = ptem; +} + +/** + * hb_font_get_ptem: + * @font: a font. + * + * Gets the "point size" of the font. A value of 0 means unset. + * + * Return value: Point size. + * + * Since: 0.9.2 + **/ +float +hb_font_get_ptem (hb_font_t *font) +{ + return font->ptem; +} + +#ifndef HB_NO_VAR +/* + * Variations + */ + +/** + * hb_font_set_variations: + * + * Since: 1.4.2 + */ +void +hb_font_set_variations (hb_font_t *font, + const hb_variation_t *variations, + unsigned int variations_length) +{ + if (hb_object_is_immutable (font)) + return; + + if (!variations_length) + { + hb_font_set_var_coords_normalized (font, nullptr, 0); + return; + } + + unsigned int coords_length = hb_ot_var_get_axis_count (font->face); + + int *normalized = coords_length ? (int *) calloc (coords_length, sizeof (int)) : nullptr; + float *design_coords = coords_length ? (float *) calloc (coords_length, sizeof (float)) : nullptr; + + if (unlikely (coords_length && !(normalized && design_coords))) + { + free (normalized); + free (design_coords); + return; + } + + const OT::fvar &fvar = *font->face->table.fvar; + for (unsigned int i = 0; i < variations_length; i++) + { + hb_ot_var_axis_info_t info; + if (hb_ot_var_find_axis_info (font->face, variations[i].tag, &info) && + info.axis_index < coords_length) + { + float v = variations[i].value; + design_coords[info.axis_index] = v; + normalized[info.axis_index] = fvar.normalize_axis_value (info.axis_index, v); + } + } + font->face->table.avar->map_coords (normalized, coords_length); + + _hb_font_adopt_var_coords (font, normalized, design_coords, coords_length); +} + +/** + * hb_font_set_var_coords_design: + * + * Since: 1.4.2 + */ +void +hb_font_set_var_coords_design (hb_font_t *font, + const float *coords, + unsigned int coords_length) +{ + if (hb_object_is_immutable (font)) + return; + + int *normalized = coords_length ? (int *) calloc (coords_length, sizeof (int)) : nullptr; + float *design_coords = coords_length ? (float *) calloc (coords_length, sizeof (float)) : nullptr; + + if (unlikely (coords_length && !(normalized && design_coords))) + { + free (normalized); + free (design_coords); + return; + } + + if (coords_length) + memcpy (design_coords, coords, coords_length * sizeof (font->design_coords[0])); + + hb_ot_var_normalize_coords (font->face, coords_length, coords, normalized); + _hb_font_adopt_var_coords (font, normalized, design_coords, coords_length); +} + +/** + * hb_font_set_var_named_instance: + * @font: a font. + * @instance_index: named instance index. + * + * Sets design coords of a font from a named instance index. + * + * Since: 2.6.0 + */ +void +hb_font_set_var_named_instance (hb_font_t *font, + unsigned instance_index) +{ + if (hb_object_is_immutable (font)) + return; + + unsigned int coords_length = hb_ot_var_named_instance_get_design_coords (font->face, instance_index, nullptr, nullptr); + + float *coords = coords_length ? (float *) calloc (coords_length, sizeof (float)) : nullptr; + if (unlikely (coords_length && !coords)) + return; + + hb_ot_var_named_instance_get_design_coords (font->face, instance_index, &coords_length, coords); + hb_font_set_var_coords_design (font, coords, coords_length); + free (coords); +} + +/** + * hb_font_set_var_coords_normalized: + * + * Since: 1.4.2 + */ +void +hb_font_set_var_coords_normalized (hb_font_t *font, + const int *coords, /* 2.14 normalized */ + unsigned int coords_length) +{ + if (hb_object_is_immutable (font)) + return; + + int *copy = coords_length ? (int *) calloc (coords_length, sizeof (coords[0])) : nullptr; + int *unmapped = coords_length ? (int *) calloc (coords_length, sizeof (coords[0])) : nullptr; + float *design_coords = coords_length ? (float *) calloc (coords_length, sizeof (design_coords[0])) : nullptr; + + if (unlikely (coords_length && !(copy && unmapped && design_coords))) + { + free (copy); + free (unmapped); + free (design_coords); + return; + } + + if (coords_length) + { + memcpy (copy, coords, coords_length * sizeof (coords[0])); + memcpy (unmapped, coords, coords_length * sizeof (coords[0])); + } + + /* Best effort design coords simulation */ + font->face->table.avar->unmap_coords (unmapped, coords_length); + for (unsigned int i = 0; i < coords_length; ++i) + design_coords[i] = font->face->table.fvar->unnormalize_axis_value (i, unmapped[i]); + free (unmapped); + + _hb_font_adopt_var_coords (font, copy, design_coords, coords_length); +} + +/** + * hb_font_get_var_coords_normalized: + * + * Return value is valid as long as variation coordinates of the font + * are not modified. + * + * Since: 1.4.2 + */ +const int * +hb_font_get_var_coords_normalized (hb_font_t *font, + unsigned int *length) +{ + if (length) + *length = font->num_coords; + + return font->coords; +} + +#ifdef HB_EXPERIMENTAL_API +/** + * hb_font_get_var_coords_design: + * + * Return value is valid as long as variation coordinates of the font + * are not modified. + * + * Since: EXPERIMENTAL + */ +const float * +hb_font_get_var_coords_design (hb_font_t *font, + unsigned int *length) +{ + if (length) + *length = font->num_coords; + + return font->design_coords; +} +#endif +#endif + +#ifndef HB_DISABLE_DEPRECATED +/* + * Deprecated get_glyph_func(): + */ + +struct hb_trampoline_closure_t +{ + void *user_data; + hb_destroy_func_t destroy; + unsigned int ref_count; +}; + +template <typename FuncType> +struct hb_trampoline_t +{ + hb_trampoline_closure_t closure; /* Must be first. */ + FuncType func; +}; + +template <typename FuncType> +static hb_trampoline_t<FuncType> * +trampoline_create (FuncType func, + void *user_data, + hb_destroy_func_t destroy) +{ + typedef hb_trampoline_t<FuncType> trampoline_t; + + trampoline_t *trampoline = (trampoline_t *) calloc (1, sizeof (trampoline_t)); + + if (unlikely (!trampoline)) + return nullptr; + + trampoline->closure.user_data = user_data; + trampoline->closure.destroy = destroy; + trampoline->closure.ref_count = 1; + trampoline->func = func; + + return trampoline; +} + +static void +trampoline_reference (hb_trampoline_closure_t *closure) +{ + closure->ref_count++; +} + +static void +trampoline_destroy (void *user_data) +{ + hb_trampoline_closure_t *closure = (hb_trampoline_closure_t *) user_data; + + if (--closure->ref_count) + return; + + if (closure->destroy) + closure->destroy (closure->user_data); + free (closure); +} + +typedef hb_trampoline_t<hb_font_get_glyph_func_t> hb_font_get_glyph_trampoline_t; + +static hb_bool_t +hb_font_get_nominal_glyph_trampoline (hb_font_t *font, + void *font_data, + hb_codepoint_t unicode, + hb_codepoint_t *glyph, + void *user_data) +{ + hb_font_get_glyph_trampoline_t *trampoline = (hb_font_get_glyph_trampoline_t *) user_data; + return trampoline->func (font, font_data, unicode, 0, glyph, trampoline->closure.user_data); +} + +static hb_bool_t +hb_font_get_variation_glyph_trampoline (hb_font_t *font, + void *font_data, + hb_codepoint_t unicode, + hb_codepoint_t variation_selector, + hb_codepoint_t *glyph, + void *user_data) +{ + hb_font_get_glyph_trampoline_t *trampoline = (hb_font_get_glyph_trampoline_t *) user_data; + return trampoline->func (font, font_data, unicode, variation_selector, glyph, trampoline->closure.user_data); +} + +/** + * hb_font_funcs_set_glyph_func: + * @ffuncs: font functions. + * @func: (closure user_data) (destroy destroy) (scope notified): callback function. + * @user_data: data to pass to @func. + * @destroy: function to call when @user_data is not needed anymore. + * + * Deprecated. Use hb_font_funcs_set_nominal_glyph_func() and + * hb_font_funcs_set_variation_glyph_func() instead. + * + * Since: 0.9.2 + * Deprecated: 1.2.3 + **/ +void +hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs, + hb_font_get_glyph_func_t func, + void *user_data, hb_destroy_func_t destroy) +{ + if (hb_object_is_immutable (ffuncs)) + { + if (destroy) + destroy (user_data); + return; + } + + hb_font_get_glyph_trampoline_t *trampoline; + + trampoline = trampoline_create (func, user_data, destroy); + if (unlikely (!trampoline)) + { + if (destroy) + destroy (user_data); + return; + } + + hb_font_funcs_set_nominal_glyph_func (ffuncs, + hb_font_get_nominal_glyph_trampoline, + trampoline, + trampoline_destroy); + + trampoline_reference (&trampoline->closure); + hb_font_funcs_set_variation_glyph_func (ffuncs, + hb_font_get_variation_glyph_trampoline, + trampoline, + trampoline_destroy); +} +#endif |