| /* |
| * Copyright © 2009 Red Hat, Inc. |
| * Copyright © 2011 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 |
| */ |
| |
| #ifndef HB_FONT_HH |
| #define HB_FONT_HH |
| |
| #include "hb.hh" |
| |
| #include "hb-face.hh" |
| #include "hb-shaper.hh" |
| |
| |
| /* |
| * hb_font_funcs_t |
| */ |
| |
| #define HB_FONT_FUNCS_IMPLEMENT_CALLBACKS \ |
| HB_FONT_FUNC_IMPLEMENT (font_h_extents) \ |
| HB_FONT_FUNC_IMPLEMENT (font_v_extents) \ |
| HB_FONT_FUNC_IMPLEMENT (nominal_glyph) \ |
| HB_FONT_FUNC_IMPLEMENT (nominal_glyphs) \ |
| HB_FONT_FUNC_IMPLEMENT (variation_glyph) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_h_advance) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_v_advance) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_h_advances) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_v_advances) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_h_origin) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_v_origin) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_h_kerning) \ |
| HB_IF_NOT_DEPRECATED (HB_FONT_FUNC_IMPLEMENT (glyph_v_kerning)) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_extents) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_contour_point) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_name) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_from_name) \ |
| HB_FONT_FUNC_IMPLEMENT (glyph_shape) \ |
| /* ^--- Add new callbacks here */ |
| |
| struct hb_font_funcs_t |
| { |
| hb_object_header_t header; |
| |
| struct { |
| #define HB_FONT_FUNC_IMPLEMENT(name) void *name; |
| HB_FONT_FUNCS_IMPLEMENT_CALLBACKS |
| #undef HB_FONT_FUNC_IMPLEMENT |
| } *user_data; |
| |
| struct { |
| #define HB_FONT_FUNC_IMPLEMENT(name) hb_destroy_func_t name; |
| HB_FONT_FUNCS_IMPLEMENT_CALLBACKS |
| #undef HB_FONT_FUNC_IMPLEMENT |
| } *destroy; |
| |
| /* Don't access these directly. Call font->get_*() instead. */ |
| union get_t { |
| struct get_funcs_t { |
| #define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_func_t name; |
| HB_FONT_FUNCS_IMPLEMENT_CALLBACKS |
| #undef HB_FONT_FUNC_IMPLEMENT |
| } f; |
| void (*array[0 |
| #define HB_FONT_FUNC_IMPLEMENT(name) +1 |
| HB_FONT_FUNCS_IMPLEMENT_CALLBACKS |
| #undef HB_FONT_FUNC_IMPLEMENT |
| ]) (); |
| } get; |
| }; |
| DECLARE_NULL_INSTANCE (hb_font_funcs_t); |
| |
| |
| /* |
| * hb_font_t |
| */ |
| |
| #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INSTANTIATE_SHAPERS(shaper, font); |
| #include "hb-shaper-list.hh" |
| #undef HB_SHAPER_IMPLEMENT |
| |
| struct hb_font_t |
| { |
| hb_object_header_t header; |
| unsigned int serial; |
| unsigned int serial_coords; |
| |
| hb_font_t *parent; |
| hb_face_t *face; |
| |
| int32_t x_scale; |
| int32_t y_scale; |
| float slant; |
| float slant_xy; |
| float x_multf; |
| float y_multf; |
| int64_t x_mult; |
| int64_t y_mult; |
| |
| unsigned int x_ppem; |
| unsigned int y_ppem; |
| |
| float ptem; |
| |
| /* Font variation coordinates. */ |
| unsigned int num_coords; |
| int *coords; |
| float *design_coords; |
| |
| hb_font_funcs_t *klass; |
| void *user_data; |
| hb_destroy_func_t destroy; |
| |
| hb_shaper_object_dataset_t<hb_font_t> data; /* Various shaper data. */ |
| |
| |
| /* Convert from font-space to user-space */ |
| int64_t dir_mult (hb_direction_t direction) |
| { return HB_DIRECTION_IS_VERTICAL(direction) ? y_mult : x_mult; } |
| hb_position_t em_scale_x (int16_t v) { return em_mult (v, x_mult); } |
| hb_position_t em_scale_y (int16_t v) { return em_mult (v, y_mult); } |
| hb_position_t em_scalef_x (float v) { return em_multf (v, x_multf); } |
| hb_position_t em_scalef_y (float v) { return em_multf (v, y_multf); } |
| float em_fscale_x (int16_t v) { return em_fmult (v, x_multf); } |
| float em_fscale_y (int16_t v) { return em_fmult (v, y_multf); } |
| float em_fscalef_x (float v) { return em_fmultf (v, x_multf); } |
| float em_fscalef_y (float v) { return em_fmultf (v, y_multf); } |
| hb_position_t em_scale_dir (int16_t v, hb_direction_t direction) |
| { return em_mult (v, dir_mult (direction)); } |
| |
| /* Convert from parent-font user-space to our user-space */ |
| hb_position_t parent_scale_x_distance (hb_position_t v) |
| { |
| if (unlikely (parent && parent->x_scale != x_scale)) |
| return (hb_position_t) (v * (int64_t) this->x_scale / this->parent->x_scale); |
| return v; |
| } |
| hb_position_t parent_scale_y_distance (hb_position_t v) |
| { |
| if (unlikely (parent && parent->y_scale != y_scale)) |
| return (hb_position_t) (v * (int64_t) this->y_scale / this->parent->y_scale); |
| return v; |
| } |
| hb_position_t parent_scale_x_position (hb_position_t v) |
| { return parent_scale_x_distance (v); } |
| hb_position_t parent_scale_y_position (hb_position_t v) |
| { return parent_scale_y_distance (v); } |
| |
| void parent_scale_distance (hb_position_t *x, hb_position_t *y) |
| { |
| *x = parent_scale_x_distance (*x); |
| *y = parent_scale_y_distance (*y); |
| } |
| void parent_scale_position (hb_position_t *x, hb_position_t *y) |
| { |
| *x = parent_scale_x_position (*x); |
| *y = parent_scale_y_position (*y); |
| } |
| |
| |
| /* Public getters */ |
| |
| HB_INTERNAL bool has_func (unsigned int i); |
| HB_INTERNAL bool has_func_set (unsigned int i); |
| |
| /* has_* ... */ |
| #define HB_FONT_FUNC_IMPLEMENT(name) \ |
| bool \ |
| has_##name##_func () \ |
| { \ |
| hb_font_funcs_t *funcs = this->klass; \ |
| unsigned int i = offsetof (hb_font_funcs_t::get_t::get_funcs_t, name) / sizeof (funcs->get.array[0]); \ |
| return has_func (i); \ |
| } \ |
| bool \ |
| has_##name##_func_set () \ |
| { \ |
| hb_font_funcs_t *funcs = this->klass; \ |
| unsigned int i = offsetof (hb_font_funcs_t::get_t::get_funcs_t, name) / sizeof (funcs->get.array[0]); \ |
| return has_func_set (i); \ |
| } |
| HB_FONT_FUNCS_IMPLEMENT_CALLBACKS |
| #undef HB_FONT_FUNC_IMPLEMENT |
| |
| hb_bool_t get_font_h_extents (hb_font_extents_t *extents) |
| { |
| memset (extents, 0, sizeof (*extents)); |
| return klass->get.f.font_h_extents (this, user_data, |
| extents, |
| !klass->user_data ? nullptr : klass->user_data->font_h_extents); |
| } |
| hb_bool_t get_font_v_extents (hb_font_extents_t *extents) |
| { |
| memset (extents, 0, sizeof (*extents)); |
| return klass->get.f.font_v_extents (this, user_data, |
| extents, |
| !klass->user_data ? nullptr : klass->user_data->font_v_extents); |
| } |
| |
| bool has_glyph (hb_codepoint_t unicode) |
| { |
| hb_codepoint_t glyph; |
| return get_nominal_glyph (unicode, &glyph); |
| } |
| |
| hb_bool_t get_nominal_glyph (hb_codepoint_t unicode, |
| hb_codepoint_t *glyph, |
| hb_codepoint_t not_found = 0) |
| { |
| *glyph = not_found; |
| return klass->get.f.nominal_glyph (this, user_data, |
| unicode, glyph, |
| !klass->user_data ? nullptr : klass->user_data->nominal_glyph); |
| } |
| unsigned int get_nominal_glyphs (unsigned int count, |
| const hb_codepoint_t *first_unicode, |
| unsigned int unicode_stride, |
| hb_codepoint_t *first_glyph, |
| unsigned int glyph_stride) |
| { |
| return klass->get.f.nominal_glyphs (this, user_data, |
| count, |
| first_unicode, unicode_stride, |
| first_glyph, glyph_stride, |
| !klass->user_data ? nullptr : klass->user_data->nominal_glyphs); |
| } |
| |
| hb_bool_t get_variation_glyph (hb_codepoint_t unicode, hb_codepoint_t variation_selector, |
| hb_codepoint_t *glyph, |
| hb_codepoint_t not_found = 0) |
| { |
| *glyph = not_found; |
| return klass->get.f.variation_glyph (this, user_data, |
| unicode, variation_selector, glyph, |
| !klass->user_data ? nullptr : klass->user_data->variation_glyph); |
| } |
| |
| hb_position_t get_glyph_h_advance (hb_codepoint_t glyph) |
| { |
| return klass->get.f.glyph_h_advance (this, user_data, |
| glyph, |
| !klass->user_data ? nullptr : klass->user_data->glyph_h_advance); |
| } |
| |
| hb_position_t get_glyph_v_advance (hb_codepoint_t glyph) |
| { |
| return klass->get.f.glyph_v_advance (this, user_data, |
| glyph, |
| !klass->user_data ? nullptr : klass->user_data->glyph_v_advance); |
| } |
| |
| void get_glyph_h_advances (unsigned int count, |
| const hb_codepoint_t *first_glyph, |
| unsigned int glyph_stride, |
| hb_position_t *first_advance, |
| unsigned int advance_stride) |
| { |
| return klass->get.f.glyph_h_advances (this, user_data, |
| count, |
| first_glyph, glyph_stride, |
| first_advance, advance_stride, |
| !klass->user_data ? nullptr : klass->user_data->glyph_h_advances); |
| } |
| |
| void get_glyph_v_advances (unsigned int count, |
| const hb_codepoint_t *first_glyph, |
| unsigned int glyph_stride, |
| hb_position_t *first_advance, |
| unsigned int advance_stride) |
| { |
| return klass->get.f.glyph_v_advances (this, user_data, |
| count, |
| first_glyph, glyph_stride, |
| first_advance, advance_stride, |
| !klass->user_data ? nullptr : klass->user_data->glyph_v_advances); |
| } |
| |
| hb_bool_t get_glyph_h_origin (hb_codepoint_t glyph, |
| hb_position_t *x, hb_position_t *y) |
| { |
| *x = *y = 0; |
| return klass->get.f.glyph_h_origin (this, user_data, |
| glyph, x, y, |
| !klass->user_data ? nullptr : klass->user_data->glyph_h_origin); |
| } |
| |
| hb_bool_t get_glyph_v_origin (hb_codepoint_t glyph, |
| hb_position_t *x, hb_position_t *y) |
| { |
| *x = *y = 0; |
| return klass->get.f.glyph_v_origin (this, user_data, |
| glyph, x, y, |
| !klass->user_data ? nullptr : klass->user_data->glyph_v_origin); |
| } |
| |
| hb_position_t get_glyph_h_kerning (hb_codepoint_t left_glyph, |
| hb_codepoint_t right_glyph) |
| { |
| #ifdef HB_DISABLE_DEPRECATED |
| return 0; |
| #else |
| return klass->get.f.glyph_h_kerning (this, user_data, |
| left_glyph, right_glyph, |
| !klass->user_data ? nullptr : klass->user_data->glyph_h_kerning); |
| #endif |
| } |
| |
| hb_position_t get_glyph_v_kerning (hb_codepoint_t top_glyph, |
| hb_codepoint_t bottom_glyph) |
| { |
| #ifdef HB_DISABLE_DEPRECATED |
| return 0; |
| #else |
| return klass->get.f.glyph_v_kerning (this, user_data, |
| top_glyph, bottom_glyph, |
| !klass->user_data ? nullptr : klass->user_data->glyph_v_kerning); |
| #endif |
| } |
| |
| hb_bool_t get_glyph_extents (hb_codepoint_t glyph, |
| hb_glyph_extents_t *extents) |
| { |
| memset (extents, 0, sizeof (*extents)); |
| return klass->get.f.glyph_extents (this, user_data, |
| glyph, |
| extents, |
| !klass->user_data ? nullptr : klass->user_data->glyph_extents); |
| } |
| |
| hb_bool_t get_glyph_contour_point (hb_codepoint_t glyph, unsigned int point_index, |
| hb_position_t *x, hb_position_t *y) |
| { |
| *x = *y = 0; |
| return klass->get.f.glyph_contour_point (this, user_data, |
| glyph, point_index, |
| x, y, |
| !klass->user_data ? nullptr : klass->user_data->glyph_contour_point); |
| } |
| |
| hb_bool_t get_glyph_name (hb_codepoint_t glyph, |
| char *name, unsigned int size) |
| { |
| if (size) *name = '\0'; |
| return klass->get.f.glyph_name (this, user_data, |
| glyph, |
| name, size, |
| !klass->user_data ? nullptr : klass->user_data->glyph_name); |
| } |
| |
| hb_bool_t get_glyph_from_name (const char *name, int len, /* -1 means nul-terminated */ |
| hb_codepoint_t *glyph) |
| { |
| *glyph = 0; |
| if (len == -1) len = strlen (name); |
| return klass->get.f.glyph_from_name (this, user_data, |
| name, len, |
| glyph, |
| !klass->user_data ? nullptr : klass->user_data->glyph_from_name); |
| } |
| |
| void get_glyph_shape (hb_codepoint_t glyph, |
| hb_draw_funcs_t *draw_funcs, void *draw_data) |
| { |
| klass->get.f.glyph_shape (this, user_data, |
| glyph, |
| draw_funcs, draw_data, |
| !klass->user_data ? nullptr : klass->user_data->glyph_shape); |
| } |
| |
| |
| /* A bit higher-level, and with fallback */ |
| |
| void get_h_extents_with_fallback (hb_font_extents_t *extents) |
| { |
| if (!get_font_h_extents (extents)) |
| { |
| extents->ascender = y_scale * .8; |
| extents->descender = extents->ascender - y_scale; |
| extents->line_gap = 0; |
| } |
| } |
| void get_v_extents_with_fallback (hb_font_extents_t *extents) |
| { |
| if (!get_font_v_extents (extents)) |
| { |
| extents->ascender = x_scale / 2; |
| extents->descender = extents->ascender - x_scale; |
| extents->line_gap = 0; |
| } |
| } |
| |
| void get_extents_for_direction (hb_direction_t direction, |
| hb_font_extents_t *extents) |
| { |
| if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) |
| get_h_extents_with_fallback (extents); |
| else |
| get_v_extents_with_fallback (extents); |
| } |
| |
| void get_glyph_advance_for_direction (hb_codepoint_t glyph, |
| hb_direction_t direction, |
| hb_position_t *x, hb_position_t *y) |
| { |
| *x = *y = 0; |
| if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) |
| *x = get_glyph_h_advance (glyph); |
| else |
| *y = get_glyph_v_advance (glyph); |
| } |
| void get_glyph_advances_for_direction (hb_direction_t direction, |
| unsigned int count, |
| const hb_codepoint_t *first_glyph, |
| unsigned glyph_stride, |
| hb_position_t *first_advance, |
| unsigned advance_stride) |
| { |
| if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) |
| get_glyph_h_advances (count, first_glyph, glyph_stride, first_advance, advance_stride); |
| else |
| get_glyph_v_advances (count, first_glyph, glyph_stride, first_advance, advance_stride); |
| } |
| |
| void guess_v_origin_minus_h_origin (hb_codepoint_t glyph, |
| hb_position_t *x, hb_position_t *y) |
| { |
| *x = get_glyph_h_advance (glyph) / 2; |
| |
| hb_font_extents_t extents; |
| get_h_extents_with_fallback (&extents); |
| *y = extents.ascender; |
| } |
| |
| void get_glyph_h_origin_with_fallback (hb_codepoint_t glyph, |
| hb_position_t *x, hb_position_t *y) |
| { |
| if (!get_glyph_h_origin (glyph, x, y) && |
| get_glyph_v_origin (glyph, x, y)) |
| { |
| hb_position_t dx, dy; |
| guess_v_origin_minus_h_origin (glyph, &dx, &dy); |
| *x -= dx; *y -= dy; |
| } |
| } |
| void get_glyph_v_origin_with_fallback (hb_codepoint_t glyph, |
| hb_position_t *x, hb_position_t *y) |
| { |
| if (!get_glyph_v_origin (glyph, x, y) && |
| get_glyph_h_origin (glyph, x, y)) |
| { |
| hb_position_t dx, dy; |
| guess_v_origin_minus_h_origin (glyph, &dx, &dy); |
| *x += dx; *y += dy; |
| } |
| } |
| |
| void get_glyph_origin_for_direction (hb_codepoint_t glyph, |
| hb_direction_t direction, |
| hb_position_t *x, hb_position_t *y) |
| { |
| if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) |
| get_glyph_h_origin_with_fallback (glyph, x, y); |
| else |
| get_glyph_v_origin_with_fallback (glyph, x, y); |
| } |
| |
| void add_glyph_h_origin (hb_codepoint_t glyph, |
| hb_position_t *x, hb_position_t *y) |
| { |
| hb_position_t origin_x, origin_y; |
| |
| get_glyph_h_origin_with_fallback (glyph, &origin_x, &origin_y); |
| |
| *x += origin_x; |
| *y += origin_y; |
| } |
| void add_glyph_v_origin (hb_codepoint_t glyph, |
| hb_position_t *x, hb_position_t *y) |
| { |
| hb_position_t origin_x, origin_y; |
| |
| get_glyph_v_origin_with_fallback (glyph, &origin_x, &origin_y); |
| |
| *x += origin_x; |
| *y += origin_y; |
| } |
| void add_glyph_origin_for_direction (hb_codepoint_t glyph, |
| hb_direction_t direction, |
| hb_position_t *x, hb_position_t *y) |
| { |
| hb_position_t origin_x, origin_y; |
| |
| get_glyph_origin_for_direction (glyph, direction, &origin_x, &origin_y); |
| |
| *x += origin_x; |
| *y += origin_y; |
| } |
| |
| void subtract_glyph_h_origin (hb_codepoint_t glyph, |
| hb_position_t *x, hb_position_t *y) |
| { |
| hb_position_t origin_x, origin_y; |
| |
| get_glyph_h_origin_with_fallback (glyph, &origin_x, &origin_y); |
| |
| *x -= origin_x; |
| *y -= origin_y; |
| } |
| void subtract_glyph_v_origin (hb_codepoint_t glyph, |
| hb_position_t *x, hb_position_t *y) |
| { |
| hb_position_t origin_x, origin_y; |
| |
| get_glyph_v_origin_with_fallback (glyph, &origin_x, &origin_y); |
| |
| *x -= origin_x; |
| *y -= origin_y; |
| } |
| void subtract_glyph_origin_for_direction (hb_codepoint_t glyph, |
| hb_direction_t direction, |
| hb_position_t *x, hb_position_t *y) |
| { |
| hb_position_t origin_x, origin_y; |
| |
| get_glyph_origin_for_direction (glyph, direction, &origin_x, &origin_y); |
| |
| *x -= origin_x; |
| *y -= origin_y; |
| } |
| |
| void get_glyph_kerning_for_direction (hb_codepoint_t first_glyph, hb_codepoint_t second_glyph, |
| hb_direction_t direction, |
| hb_position_t *x, hb_position_t *y) |
| { |
| if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) { |
| *y = 0; |
| *x = get_glyph_h_kerning (first_glyph, second_glyph); |
| } else { |
| *x = 0; |
| *y = get_glyph_v_kerning (first_glyph, second_glyph); |
| } |
| } |
| |
| hb_bool_t get_glyph_extents_for_origin (hb_codepoint_t glyph, |
| hb_direction_t direction, |
| hb_glyph_extents_t *extents) |
| { |
| hb_bool_t ret = get_glyph_extents (glyph, extents); |
| |
| if (ret) |
| subtract_glyph_origin_for_direction (glyph, direction, &extents->x_bearing, &extents->y_bearing); |
| |
| return ret; |
| } |
| |
| hb_bool_t get_glyph_contour_point_for_origin (hb_codepoint_t glyph, unsigned int point_index, |
| hb_direction_t direction, |
| hb_position_t *x, hb_position_t *y) |
| { |
| hb_bool_t ret = get_glyph_contour_point (glyph, point_index, x, y); |
| |
| if (ret) |
| subtract_glyph_origin_for_direction (glyph, direction, x, y); |
| |
| return ret; |
| } |
| |
| /* Generates gidDDD if glyph has no name. */ |
| void |
| glyph_to_string (hb_codepoint_t glyph, |
| char *s, unsigned int size) |
| { |
| if (get_glyph_name (glyph, s, size)) return; |
| |
| if (size && snprintf (s, size, "gid%u", glyph) < 0) |
| *s = '\0'; |
| } |
| |
| /* Parses gidDDD and uniUUUU strings automatically. */ |
| hb_bool_t |
| glyph_from_string (const char *s, int len, /* -1 means nul-terminated */ |
| hb_codepoint_t *glyph) |
| { |
| if (get_glyph_from_name (s, len, glyph)) return true; |
| |
| if (len == -1) len = strlen (s); |
| |
| /* Straight glyph index. */ |
| if (hb_codepoint_parse (s, len, 10, glyph)) |
| return true; |
| |
| if (len > 3) |
| { |
| /* gidDDD syntax for glyph indices. */ |
| if (0 == strncmp (s, "gid", 3) && |
| hb_codepoint_parse (s + 3, len - 3, 10, glyph)) |
| return true; |
| |
| /* uniUUUU and other Unicode character indices. */ |
| hb_codepoint_t unichar; |
| if (0 == strncmp (s, "uni", 3) && |
| hb_codepoint_parse (s + 3, len - 3, 16, &unichar) && |
| get_nominal_glyph (unichar, glyph)) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| void mults_changed () |
| { |
| float upem = face->get_upem (); |
| x_multf = x_scale / upem; |
| y_multf = y_scale / upem; |
| bool x_neg = x_scale < 0; |
| x_mult = (x_neg ? -((int64_t) -x_scale << 16) : ((int64_t) x_scale << 16)) / upem; |
| bool y_neg = y_scale < 0; |
| y_mult = (y_neg ? -((int64_t) -y_scale << 16) : ((int64_t) y_scale << 16)) / upem; |
| slant_xy = y_scale ? slant * x_scale / y_scale : 0.f; |
| |
| data.fini (); |
| } |
| |
| hb_position_t em_mult (int16_t v, int64_t mult) |
| { return (hb_position_t) ((v * mult + 32768) >> 16); } |
| hb_position_t em_multf (float v, float mult) |
| { return (hb_position_t) roundf (em_fmultf (v, mult)); } |
| float em_fmultf (float v, float mult) |
| { return v * mult; } |
| float em_fmult (int16_t v, float mult) |
| { return (float) v * mult; } |
| }; |
| DECLARE_NULL_INSTANCE (hb_font_t); |
| |
| |
| #endif /* HB_FONT_HH */ |