diff options
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-0.9.38/src/hb-font.cc')
| -rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-0.9.38/src/hb-font.cc | 1238 |
1 files changed, 1238 insertions, 0 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.38/src/hb-font.cc b/Build/source/libs/harfbuzz/harfbuzz-0.9.38/src/hb-font.cc new file mode 100644 index 00000000000..4364ca72fb0 --- /dev/null +++ b/Build/source/libs/harfbuzz/harfbuzz-0.9.38/src/hb-font.cc @@ -0,0 +1,1238 @@ +/* + * 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-private.hh" + +#include "hb-ot-layout-private.hh" + +#include "hb-font-private.hh" +#include "hb-open-file-private.hh" +#include "hb-ot-head-table.hh" +#include "hb-ot-maxp-table.hh" + +#include "hb-cache-private.hh" + +#include <string.h> + + +/* + * hb_font_funcs_t + */ + +static hb_bool_t +hb_font_get_glyph_nil (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) +{ + if (font->parent) + return font->parent->get_glyph (unicode, variation_selector, glyph); + + *glyph = 0; + return false; +} + +static hb_position_t +hb_font_get_glyph_h_advance_nil (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + void *user_data HB_UNUSED) +{ + if (font->parent) + return font->parent_scale_x_distance (font->parent->get_glyph_h_advance (glyph)); + + return font->x_scale; +} + +static hb_position_t +hb_font_get_glyph_v_advance_nil (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + void *user_data HB_UNUSED) +{ + if (font->parent) + return font->parent_scale_y_distance (font->parent->get_glyph_v_advance (glyph)); + + return font->y_scale; +} + +static hb_bool_t +hb_font_get_glyph_h_origin_nil (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) +{ + if (font->parent) { + hb_bool_t ret = font->parent->get_glyph_h_origin (glyph, x, y); + if (ret) + font->parent_scale_position (x, y); + return ret; + } + + *x = *y = 0; + return false; +} + +static hb_bool_t +hb_font_get_glyph_v_origin_nil (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) +{ + if (font->parent) { + hb_bool_t ret = font->parent->get_glyph_v_origin (glyph, x, y); + if (ret) + font->parent_scale_position (x, y); + return ret; + } + + *x = *y = 0; + return false; +} + +static hb_position_t +hb_font_get_glyph_h_kerning_nil (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t left_glyph, + hb_codepoint_t right_glyph, + void *user_data HB_UNUSED) +{ + if (font->parent) + return font->parent_scale_x_distance (font->parent->get_glyph_h_kerning (left_glyph, right_glyph)); + + return 0; +} + +static hb_position_t +hb_font_get_glyph_v_kerning_nil (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t top_glyph, + hb_codepoint_t bottom_glyph, + void *user_data HB_UNUSED) +{ + if (font->parent) + return font->parent_scale_y_distance (font->parent->get_glyph_v_kerning (top_glyph, bottom_glyph)); + + return 0; +} + +static hb_bool_t +hb_font_get_glyph_extents_nil (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + hb_glyph_extents_t *extents, + void *user_data HB_UNUSED) +{ + if (font->parent) { + 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; + } + + memset (extents, 0, sizeof (*extents)); + return false; +} + +static hb_bool_t +hb_font_get_glyph_contour_point_nil (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) +{ + if (font->parent) { + 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; + } + + *x = *y = 0; + return false; +} + +static hb_bool_t +hb_font_get_glyph_name_nil (hb_font_t *font, + void *font_data HB_UNUSED, + hb_codepoint_t glyph, + char *name, unsigned int size, + void *user_data HB_UNUSED) +{ + if (font->parent) + return font->parent->get_glyph_name (glyph, name, size); + + if (size) *name = '\0'; + return false; +} + +static hb_bool_t +hb_font_get_glyph_from_name_nil (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) +{ + if (font->parent) + return font->parent->get_glyph_from_name (name, len, glyph); + + *glyph = 0; + return false; +} + + +static const hb_font_funcs_t _hb_font_funcs_nil = { + HB_OBJECT_HEADER_STATIC, + + true, /* immutable */ + + { +#define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_nil, + HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + } +}; + + +/** + * hb_font_funcs_create: (Xconstructor) + * + * + * + * Return value: (transfer full): + * + * Since: 1.0 + **/ +hb_font_funcs_t * +hb_font_funcs_create (void) +{ + 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_nil.get; + + return ffuncs; +} + +/** + * hb_font_funcs_get_empty: + * + * + * + * Return value: (transfer full): + * + * Since: 1.0 + **/ +hb_font_funcs_t * +hb_font_funcs_get_empty (void) +{ + return const_cast<hb_font_funcs_t *> (&_hb_font_funcs_nil); +} + +/** + * hb_font_funcs_reference: (skip) + * @ffuncs: font functions. + * + * + * + * Return value: + * + * Since: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +void +hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs) +{ + if (unlikely (hb_object_is_inert (ffuncs))) + return; + + ffuncs->immutable = true; +} + +/** + * hb_font_funcs_is_immutable: + * @ffuncs: font functions. + * + * + * + * Return value: + * + * Since: 1.0 + **/ +hb_bool_t +hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs) +{ + return ffuncs->immutable; +} + + +#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 (ffuncs->immutable) { \ + if (destroy) \ + destroy (user_data); \ + return; \ + } \ + \ + if (ffuncs->destroy.name) \ + ffuncs->destroy.name (ffuncs->user_data.name); \ + \ + if (func) { \ + ffuncs->get.name = func; \ + ffuncs->user_data.name = user_data; \ + ffuncs->destroy.name = destroy; \ + } else { \ + ffuncs->get.name = hb_font_get_##name##_nil; \ + ffuncs->user_data.name = NULL; \ + ffuncs->destroy.name = NULL; \ + } \ +} + +HB_FONT_FUNCS_IMPLEMENT_CALLBACKS +#undef HB_FONT_FUNC_IMPLEMENT + + +/* Public getters */ + +/** + * hb_font_get_glyph: + * @font: a font. + * @unicode: + * @variation_selector: + * @glyph: (out): + * + * + * + * Return value: + * + * Since: 1.0 + **/ +hb_bool_t +hb_font_get_glyph (hb_font_t *font, + hb_codepoint_t unicode, hb_codepoint_t variation_selector, + hb_codepoint_t *glyph) +{ + return font->get_glyph (unicode, variation_selector, glyph); +} + +/** + * hb_font_get_glyph_h_advance: + * @font: a font. + * @glyph: + * + * + * + * Return value: + * + * Since: 1.0 + **/ +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: 1.0 + **/ +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_origin: + * @font: a font. + * @glyph: + * @x: (out): + * @y: (out): + * + * + * + * Return value: + * + * Since: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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_glyph_advance_for_direction: + * @font: a font. + * @glyph: + * @direction: + * @x: (out): + * @y: (out): + * + * + * + * Since: 1.0 + **/ +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_origin_for_direction: + * @font: a font. + * @glyph: + * @direction: + * @x: (out): + * @y: (out): + * + * + * + * Since: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +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): + * @len: + * @glyph: (out): + * + * + * + * Return value: + * + * Since: 1.0 + **/ +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 + */ + +/** + * hb_font_create: (Xconstructor) + * @face: a face. + * + * + * + * Return value: (transfer full): + * + * Since: 1.0 + **/ +hb_font_t * +hb_font_create (hb_face_t *face) +{ + hb_font_t *font; + + if (unlikely (!face)) + face = hb_face_get_empty (); + if (unlikely (hb_object_is_inert (face))) + return hb_font_get_empty (); + if (!(font = hb_object_create<hb_font_t> ())) + return hb_font_get_empty (); + + hb_face_make_immutable (face); + font->face = hb_face_reference (face); + font->klass = hb_font_funcs_get_empty (); + + return font; +} + +/** + * hb_font_create_sub_font: + * @parent: parent font. + * + * + * + * Return value: (transfer full): + * + * Since: 1.0 + **/ +hb_font_t * +hb_font_create_sub_font (hb_font_t *parent) +{ + if (unlikely (!parent)) + return hb_font_get_empty (); + + hb_font_t *font = hb_font_create (parent->face); + + if (unlikely (hb_object_is_inert (font))) + return font; + + hb_font_make_immutable (parent); + 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; + + return font; +} + +/** + * hb_font_get_empty: + * + * + * + * Return value: (transfer full) + * + * Since: 1.0 + **/ +hb_font_t * +hb_font_get_empty (void) +{ + static const hb_font_t _hb_font_nil = { + HB_OBJECT_HEADER_STATIC, + + true, /* immutable */ + + NULL, /* parent */ + const_cast<hb_face_t *> (&_hb_face_nil), + + 0, /* x_scale */ + 0, /* y_scale */ + + 0, /* x_ppem */ + 0, /* y_ppem */ + + const_cast<hb_font_funcs_t *> (&_hb_font_funcs_nil), /* klass */ + NULL, /* user_data */ + NULL, /* destroy */ + + { +#define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INVALID, +#include "hb-shaper-list.hh" +#undef HB_SHAPER_IMPLEMENT + } + }; + + return const_cast<hb_font_t *> (&_hb_font_nil); +} + +/** + * hb_font_reference: (skip) + * @font: a font. + * + * + * + * Return value: (transfer full): + * + * Since: 1.0 + **/ +hb_font_t * +hb_font_reference (hb_font_t *font) +{ + return hb_object_reference (font); +} + +/** + * hb_font_destroy: (skip) + * @font: a font. + * + * + * + * Since: 1.0 + **/ +void +hb_font_destroy (hb_font_t *font) +{ + if (!hb_object_destroy (font)) return; + +#define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, font); +#include "hb-shaper-list.hh" +#undef HB_SHAPER_IMPLEMENT + + 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); +} + +/** + * hb_font_set_user_data: (skip) + * @font: a font. + * @key: + * @data: + * @destroy: + * @replace: + * + * + * + * Return value: + * + * Since: 1.0 + **/ +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: 1.0 + **/ +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: 1.0 + **/ +void +hb_font_make_immutable (hb_font_t *font) +{ + if (unlikely (hb_object_is_inert (font))) + return; + + font->immutable = true; +} + +/** + * hb_font_is_immutable: + * @font: a font. + * + * + * + * Return value: + * + * Since: 1.0 + **/ +hb_bool_t +hb_font_is_immutable (hb_font_t *font) +{ + return font->immutable; +} + +/** + * hb_font_get_parent: + * @font: a font. + * + * + * + * Return value: (transfer none): + * + * Since: 1.0 + **/ +hb_font_t * +hb_font_get_parent (hb_font_t *font) +{ + return font->parent; +} + +/** + * hb_font_get_face: + * @font: a font. + * + * + * + * Return value: (transfer none): + * + * Since: 1.0 + **/ +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: 1.0 + **/ +void +hb_font_set_funcs (hb_font_t *font, + hb_font_funcs_t *klass, + void *font_data, + hb_destroy_func_t destroy) +{ + if (font->immutable) { + 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: 1.0 + **/ +void +hb_font_set_funcs_data (hb_font_t *font, + void *font_data, + hb_destroy_func_t destroy) +{ + /* Destroy user_data? */ + if (font->immutable) { + 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: 1.0 + **/ +void +hb_font_set_scale (hb_font_t *font, + int x_scale, + int y_scale) +{ + if (font->immutable) + 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: 1.0 + **/ +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: 1.0 + **/ +void +hb_font_set_ppem (hb_font_t *font, + unsigned int x_ppem, + unsigned int y_ppem) +{ + if (font->immutable) + 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: 1.0 + **/ +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; +} |