/* * 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" /** * 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 (first_unicode, unicode_stride); first_glyph = &StructAtOffsetUnaligned (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 (first_glyph, glyph_stride); first_advance = &StructAtOffsetUnaligned (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 (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 (first_glyph, glyph_stride); first_advance = &StructAtOffsetUnaligned (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 (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)); } 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)); } 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 ())) 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_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_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 * Deprecated: 2.0.0 **/ 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); } /** * 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); } /** * 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 * Deprecated: 2.0.0 **/ 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_Null_hb_face_t), 1000, /* x_scale */ 1000, /* y_scale */ 0, /* x_ppem */ 0, /* y_ppem */ 0, /* ptem */ 0, /* num_coords */ nullptr, /* coords */ const_cast (&_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 ())) 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); 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); /* Install our in-house, very lightweight, funcs. */ hb_ot_font_set_funcs (font); return font; } /** * 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->x_ppem = parent->x_ppem; font->y_ppem = parent->y_ppem; font->ptem = parent->ptem; font->num_coords = parent->num_coords; if (!font->num_coords) font->coords = nullptr; else { unsigned int size = parent->num_coords * sizeof (parent->coords[0]); font->coords = (int *) malloc (size); if (unlikely (!font->coords)) font->num_coords = 0; else memcpy (font->coords, parent->coords, size); } return font; } /** * hb_font_get_empty: * * * * Return value: (transfer full) * * Since: 0.9.2 **/ hb_font_t * hb_font_get_empty () { return const_cast (&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); } /** * 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; font->face = hb_face_reference (face); 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; } /** * 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; } /* * Variations */ static void _hb_font_adopt_var_coords_normalized (hb_font_t *font, int *coords, /* 2.14 normalized */ unsigned int coords_length) { free (font->coords); font->coords = coords; font->num_coords = coords_length; } /** * 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; if (unlikely (coords_length && !normalized)) return; hb_ot_var_normalize_variations (font->face, variations, variations_length, normalized, coords_length); _hb_font_adopt_var_coords_normalized (font, normalized, 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; if (unlikely (coords_length && !normalized)) return; hb_ot_var_normalize_coords (font->face, coords_length, coords, normalized); _hb_font_adopt_var_coords_normalized (font, normalized, coords_length); } /** * 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; if (unlikely (coords_length && !copy)) return; if (coords_length) memcpy (copy, coords, coords_length * sizeof (coords[0])); _hb_font_adopt_var_coords_normalized (font, copy, 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; } /* * Deprecated get_glyph_func(): */ struct hb_trampoline_closure_t { void *user_data; hb_destroy_func_t destroy; unsigned int ref_count; }; template struct hb_trampoline_t { hb_trampoline_closure_t closure; /* Must be first. */ FuncType func; }; template static hb_trampoline_t * trampoline_create (FuncType func, void *user_data, hb_destroy_func_t destroy) { typedef hb_trampoline_t 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_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) { 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); }