/* * 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-draw.hh" #include "hb-paint.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 * * Functions for working with font objects. * * A font object represents a font face at a specific size and with * certain other parameters (pixels-per-em, points-per-em, variation * settings) specified. Font objects are created from font face * objects, and are used as input to hb_shape(), among other things. * * Client programs can optionally pass in their own functions that * implement the basic, lower-level queries of font objects. This set * of font functions is defined by the virtual methods in * #hb_font_funcs_t. * * HarfBuzz provides a built-in set of lightweight default * functions for each method in #hb_font_funcs_t. * * The default font functions are implemented in terms of the * #hb_font_funcs_t methods of the parent font object. This allows * client programs to override only the methods they need to, and * otherwise inherit the parent font's implementation, if any. **/ /* * 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) { … } 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) { … } 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) { … } 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) { … } 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) { … } 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) { … } #define hb_font_get_nominal_glyphs_nil … 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) { … } 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) { … } 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) { … } 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) { … } 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) { … } 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) { … } 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) { … } #define hb_font_get_glyph_h_advances_nil … 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) { … } #define hb_font_get_glyph_v_advances_nil … 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) { … } 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) { … } 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) { … } 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) { … } 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) { … } 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) { … } 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) { … } #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) { … } 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) { … } #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) { … } 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) { … } 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) { … } 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) { … } 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) { … } 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) { … } 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) { … } 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) { … } static void hb_font_draw_glyph_nil (hb_font_t *font HB_UNUSED, void *font_data HB_UNUSED, hb_codepoint_t glyph, hb_draw_funcs_t *draw_funcs, void *draw_data, void *user_data HB_UNUSED) { … } static void hb_font_paint_glyph_nil (hb_font_t *font HB_UNUSED, void *font_data HB_UNUSED, hb_codepoint_t glyph HB_UNUSED, hb_paint_funcs_t *paint_funcs HB_UNUSED, void *paint_data HB_UNUSED, unsigned int palette HB_UNUSED, hb_color_t foreground HB_UNUSED, void *user_data HB_UNUSED) { … } hb_font_draw_glyph_default_adaptor_t; static void hb_draw_move_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data, hb_draw_state_t *st, float to_x, float to_y, void *user_data HB_UNUSED) { … } static void hb_draw_line_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data, hb_draw_state_t *st, float to_x, float to_y, void *user_data HB_UNUSED) { … } static void hb_draw_quadratic_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data, hb_draw_state_t *st, float control_x, float control_y, float to_x, float to_y, void *user_data HB_UNUSED) { … } static void hb_draw_cubic_to_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data, hb_draw_state_t *st, float control1_x, float control1_y, float control2_x, float control2_y, float to_x, float to_y, void *user_data HB_UNUSED) { … } static void hb_draw_close_path_default (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data, hb_draw_state_t *st, void *user_data HB_UNUSED) { … } static const hb_draw_funcs_t _hb_draw_funcs_default = …; static void hb_font_draw_glyph_default (hb_font_t *font, void *font_data HB_UNUSED, hb_codepoint_t glyph, hb_draw_funcs_t *draw_funcs, void *draw_data, void *user_data HB_UNUSED) { … } static void hb_font_paint_glyph_default (hb_font_t *font, void *font_data, hb_codepoint_t glyph, hb_paint_funcs_t *paint_funcs, void *paint_data, unsigned int palette, hb_color_t foreground, void *user_data) { … } DEFINE_NULL_INSTANCE (hb_font_funcs_t) = …; static const hb_font_funcs_t _hb_font_funcs_default = …; /** * hb_font_funcs_create: * * Creates a new #hb_font_funcs_t structure of font functions. * * Return value: (transfer full): The font-functions structure * * Since: 0.9.2 **/ hb_font_funcs_t * hb_font_funcs_create () { … } /** * hb_font_funcs_get_empty: * * Fetches an empty font-functions structure. * * Return value: (transfer full): The font-functions structure * * Since: 0.9.2 **/ hb_font_funcs_t * hb_font_funcs_get_empty () { … } /** * hb_font_funcs_reference: (skip) * @ffuncs: The font-functions structure * * Increases the reference count on a font-functions structure. * * Return value: The font-functions structure * * Since: 0.9.2 **/ hb_font_funcs_t * hb_font_funcs_reference (hb_font_funcs_t *ffuncs) { … } /** * hb_font_funcs_destroy: (skip) * @ffuncs: The font-functions structure * * Decreases the reference count on a font-functions structure. When * the reference count reaches zero, the font-functions structure is * destroyed, freeing all memory. * * Since: 0.9.2 **/ void hb_font_funcs_destroy (hb_font_funcs_t *ffuncs) { … } /** * hb_font_funcs_set_user_data: (skip) * @ffuncs: The font-functions structure * @key: The user-data key to set * @data: A pointer to the user data set * @destroy: (nullable): A callback to call when @data is not needed anymore * @replace: Whether to replace an existing data with the same key * * Attaches a user-data key/data pair to the specified font-functions structure. * * Return value: `true` if success, `false` otherwise * * 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 /* May be NULL. */, hb_bool_t replace) { … } /** * hb_font_funcs_get_user_data: (skip) * @ffuncs: The font-functions structure * @key: The user-data key to query * * Fetches the user data associated with the specified key, * attached to the specified font-functions structure. * * Return value: (transfer none): A pointer to the user data * * Since: 0.9.2 **/ void * hb_font_funcs_get_user_data (const hb_font_funcs_t *ffuncs, hb_user_data_key_t *key) { … } /** * hb_font_funcs_make_immutable: * @ffuncs: The font-functions structure * * Makes a font-functions structure immutable. * * Since: 0.9.2 **/ void hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs) { … } /** * hb_font_funcs_is_immutable: * @ffuncs: The font-functions structure * * Tests whether a font-functions structure is immutable. * * Return value: `true` if @ffuncs is immutable, `false` otherwise * * Since: 0.9.2 **/ hb_bool_t hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs) { … } static bool _hb_font_funcs_set_preamble (hb_font_funcs_t *ffuncs, bool func_is_null, void **user_data, hb_destroy_func_t *destroy) { … } static bool _hb_font_funcs_set_middle (hb_font_funcs_t *ffuncs, void *user_data, hb_destroy_func_t destroy) { … } #define HB_FONT_FUNC_IMPLEMENT … HB_FONT_FUNCS_IMPLEMENT_CALLBACKS #undef HB_FONT_FUNC_IMPLEMENT bool hb_font_t::has_func_set (unsigned int i) { … } bool hb_font_t::has_func (unsigned int i) { … } /* Public getters */ /** * hb_font_get_h_extents: * @font: #hb_font_t to work upon * @extents: (out): The font extents retrieved * * Fetches the extents for a specified font, for horizontal * text segments. * * Return value: `true` if data found, `false` otherwise * * Since: 1.1.3 **/ hb_bool_t hb_font_get_h_extents (hb_font_t *font, hb_font_extents_t *extents) { … } /** * hb_font_get_v_extents: * @font: #hb_font_t to work upon * @extents: (out): The font extents retrieved * * Fetches the extents for a specified font, for vertical * text segments. * * Return value: `true` if data found, `false` otherwise * * Since: 1.1.3 **/ hb_bool_t hb_font_get_v_extents (hb_font_t *font, hb_font_extents_t *extents) { … } /** * hb_font_get_glyph: * @font: #hb_font_t to work upon * @unicode: The Unicode code point to query * @variation_selector: A variation-selector code point * @glyph: (out): The glyph ID retrieved * * Fetches the glyph ID for a Unicode code point in the specified * font, with an optional variation selector. * * If @variation_selector is 0, calls hb_font_get_nominal_glyph(); * otherwise calls hb_font_get_variation_glyph(). * * Return value: `true` if data found, `false` otherwise * * 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) { … } /** * hb_font_get_nominal_glyph: * @font: #hb_font_t to work upon * @unicode: The Unicode code point to query * @glyph: (out): The glyph ID retrieved * * Fetches the nominal glyph ID for a Unicode code point in the * specified font. * * This version of the function should not be used to fetch glyph IDs * for code points modified by variation selectors. For variation-selector * support, user hb_font_get_variation_glyph() or use hb_font_get_glyph(). * * Return value: `true` if data found, `false` otherwise * * Since: 1.2.3 **/ hb_bool_t hb_font_get_nominal_glyph (hb_font_t *font, hb_codepoint_t unicode, hb_codepoint_t *glyph) { … } /** * hb_font_get_nominal_glyphs: * @font: #hb_font_t to work upon * @count: number of code points to query * @first_unicode: The first Unicode code point to query * @unicode_stride: The stride between successive code points * @first_glyph: (out): The first glyph ID retrieved * @glyph_stride: The stride between successive glyph IDs * * Fetches the nominal glyph IDs for a sequence of Unicode code points. Glyph * IDs must be returned in a #hb_codepoint_t output parameter. Stops at the * first unsupported glyph ID. * * Return value: the number of code points processed * * 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) { … } /** * hb_font_get_variation_glyph: * @font: #hb_font_t to work upon * @unicode: The Unicode code point to query * @variation_selector: The variation-selector code point to query * @glyph: (out): The glyph ID retrieved * * Fetches the glyph ID for a Unicode code point when followed by * by the specified variation-selector code point, in the specified * font. * * Return value: `true` if data found, `false` otherwise * * 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) { … } /** * hb_font_get_glyph_h_advance: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * * Fetches the advance for a glyph ID in the specified font, * for horizontal text segments. * * Return value: The advance of @glyph within @font * * Since: 0.9.2 **/ hb_position_t hb_font_get_glyph_h_advance (hb_font_t *font, hb_codepoint_t glyph) { … } /** * hb_font_get_glyph_v_advance: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * * Fetches the advance for a glyph ID in the specified font, * for vertical text segments. * * Return value: The advance of @glyph within @font * * Since: 0.9.2 **/ hb_position_t hb_font_get_glyph_v_advance (hb_font_t *font, hb_codepoint_t glyph) { … } /** * hb_font_get_glyph_h_advances: * @font: #hb_font_t to work upon * @count: The number of glyph IDs in the sequence queried * @first_glyph: The first glyph ID to query * @glyph_stride: The stride between successive glyph IDs * @first_advance: (out): The first advance retrieved * @advance_stride: The stride between successive advances * * Fetches the advances for a sequence of glyph IDs in the specified * font, for horizontal text segments. * * 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) { … } /** * hb_font_get_glyph_v_advances: * @font: #hb_font_t to work upon * @count: The number of glyph IDs in the sequence queried * @first_glyph: The first glyph ID to query * @glyph_stride: The stride between successive glyph IDs * @first_advance: (out): The first advance retrieved * @advance_stride: (out): The stride between successive advances * * Fetches the advances for a sequence of glyph IDs in the specified * font, for vertical text segments. * * 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) { … } /** * hb_font_get_glyph_h_origin: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @x: (out): The X coordinate of the origin * @y: (out): The Y coordinate of the origin * * Fetches the (X,Y) coordinates of the origin for a glyph ID * in the specified font, for horizontal text segments. * * Return value: `true` if data found, `false` otherwise * * 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) { … } /** * hb_font_get_glyph_v_origin: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @x: (out): The X coordinate of the origin * @y: (out): The Y coordinate of the origin * * Fetches the (X,Y) coordinates of the origin for a glyph ID * in the specified font, for vertical text segments. * * Return value: `true` if data found, `false` otherwise * * 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) { … } /** * hb_font_get_glyph_h_kerning: * @font: #hb_font_t to work upon * @left_glyph: The glyph ID of the left glyph in the glyph pair * @right_glyph: The glyph ID of the right glyph in the glyph pair * * Fetches the kerning-adjustment value for a glyph-pair in * the specified font, for horizontal text segments. * * <note>It handles legacy kerning only (as returned by the corresponding * #hb_font_funcs_t function).</note> * * Return value: The kerning adjustment 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) { … } #ifndef HB_DISABLE_DEPRECATED /** * hb_font_get_glyph_v_kerning: * @font: #hb_font_t to work upon * @top_glyph: The glyph ID of the top glyph in the glyph pair * @bottom_glyph: The glyph ID of the bottom glyph in the glyph pair * * Fetches the kerning-adjustment value for a glyph-pair in * the specified font, for vertical text segments. * * <note>It handles legacy kerning only (as returned by the corresponding * #hb_font_funcs_t function).</note> * * Return value: The kerning adjustment 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) { … } #endif /** * hb_font_get_glyph_extents: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @extents: (out): The #hb_glyph_extents_t retrieved * * Fetches the #hb_glyph_extents_t data for a glyph ID * in the specified font. * * Return value: `true` if data found, `false` otherwise * * 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) { … } /** * hb_font_get_glyph_contour_point: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @point_index: The contour-point index to query * @x: (out): The X value retrieved for the contour point * @y: (out): The Y value retrieved for the contour point * * Fetches the (x,y) coordinates of a specified contour-point index * in the specified glyph, within the specified font. * * Return value: `true` if data found, `false` otherwise * * 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) { … } /** * hb_font_get_glyph_name: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @name: (out) (array length=size): Name string retrieved for the glyph ID * @size: Length of the glyph-name string retrieved * * Fetches the glyph-name string for a glyph ID in the specified @font. * * According to the OpenType specification, glyph names are limited to 63 * characters and can only contain (a subset of) ASCII. * * Return value: `true` if data found, `false` otherwise * * 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) { … } /** * hb_font_get_glyph_from_name: * @font: #hb_font_t to work upon * @name: (array length=len): The name string to query * @len: The length of the name queried * @glyph: (out): The glyph ID retrieved * * Fetches the glyph ID that corresponds to a name string in the specified @font. * * <note>Note: @len == -1 means the name string is null-terminated.</note> * * Return value: `true` if data found, `false` otherwise * * 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) { … } #ifndef HB_DISABLE_DEPRECATED /** * hb_font_get_glyph_shape: * @font: #hb_font_t to work upon * @glyph: The glyph ID * @dfuncs: #hb_draw_funcs_t to draw to * @draw_data: User data to pass to draw callbacks * * Fetches the glyph shape that corresponds to a glyph in the specified @font. * The shape is returned by way of calls to the callbacks of the @dfuncs * objects, with @draw_data passed to them. * * Since: 4.0.0 * Deprecated: 7.0.0: Use hb_font_draw_glyph() instead */ void hb_font_get_glyph_shape (hb_font_t *font, hb_codepoint_t glyph, hb_draw_funcs_t *dfuncs, void *draw_data) { … } #endif /** * hb_font_draw_glyph: * @font: #hb_font_t to work upon * @glyph: The glyph ID * @dfuncs: #hb_draw_funcs_t to draw to * @draw_data: User data to pass to draw callbacks * * Draws the outline that corresponds to a glyph in the specified @font. * * The outline is returned by way of calls to the callbacks of the @dfuncs * objects, with @draw_data passed to them. * * Since: 7.0.0 **/ void hb_font_draw_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_draw_funcs_t *dfuncs, void *draw_data) { … } /** * hb_font_paint_glyph: * @font: #hb_font_t to work upon * @glyph: The glyph ID * @pfuncs: #hb_paint_funcs_t to paint with * @paint_data: User data to pass to paint callbacks * @palette_index: The index of the font's color palette to use * @foreground: The foreground color, unpremultipled * * Paints the glyph. * * The painting instructions are returned by way of calls to * the callbacks of the @funcs object, with @paint_data passed * to them. * * If the font has color palettes (see hb_ot_color_has_palettes()), * then @palette_index selects the palette to use. If the font only * has one palette, this will be 0. * * Since: 7.0.0 */ void hb_font_paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *pfuncs, void *paint_data, unsigned int palette_index, hb_color_t foreground) { … } /* A bit higher-level, and with fallback */ /** * hb_font_get_extents_for_direction: * @font: #hb_font_t to work upon * @direction: The direction of the text segment * @extents: (out): The #hb_font_extents_t retrieved * * Fetches the extents for a font in a text segment of the * specified direction. * * Calls the appropriate direction-specific variant (horizontal * or vertical) depending on the value of @direction. * * Since: 1.1.3 **/ void hb_font_get_extents_for_direction (hb_font_t *font, hb_direction_t direction, hb_font_extents_t *extents) { … } /** * hb_font_get_glyph_advance_for_direction: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @direction: The direction of the text segment * @x: (out): The horizontal advance retrieved * @y: (out): The vertical advance retrieved * * Fetches the advance for a glyph ID from the specified font, * in a text segment of the specified direction. * * Calls the appropriate direction-specific variant (horizontal * or vertical) depending on the value of @direction. * * 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) { … } /** * hb_font_get_glyph_advances_for_direction: * @font: #hb_font_t to work upon * @direction: The direction of the text segment * @count: The number of glyph IDs in the sequence queried * @first_glyph: The first glyph ID to query * @glyph_stride: The stride between successive glyph IDs * @first_advance: (out): The first advance retrieved * @advance_stride: (out): The stride between successive advances * * Fetches the advances for a sequence of glyph IDs in the specified * font, in a text segment of the specified direction. * * Calls the appropriate direction-specific variant (horizontal * or vertical) depending on the value of @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) { … } /** * hb_font_get_glyph_origin_for_direction: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @direction: The direction of the text segment * @x: (out): The X coordinate retrieved for the origin * @y: (out): The Y coordinate retrieved for the origin * * Fetches the (X,Y) coordinates of the origin for a glyph in * the specified font. * * Calls the appropriate direction-specific variant (horizontal * or vertical) depending on the value of @direction. * * 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) { … } /** * hb_font_add_glyph_origin_for_direction: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @direction: The direction of the text segment * @x: (inout): Input = The original X coordinate * Output = The X coordinate plus the X-coordinate of the origin * @y: (inout): Input = The original Y coordinate * Output = The Y coordinate plus the Y-coordinate of the origin * * Adds the origin coordinates to an (X,Y) point coordinate, in * the specified glyph ID in the specified font. * * Calls the appropriate direction-specific variant (horizontal * or vertical) depending on the value of @direction. * * 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) { … } /** * hb_font_subtract_glyph_origin_for_direction: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @direction: The direction of the text segment * @x: (inout): Input = The original X coordinate * Output = The X coordinate minus the X-coordinate of the origin * @y: (inout): Input = The original Y coordinate * Output = The Y coordinate minus the Y-coordinate of the origin * * Subtracts the origin coordinates from an (X,Y) point coordinate, * in the specified glyph ID in the specified font. * * Calls the appropriate direction-specific variant (horizontal * or vertical) depending on the value of @direction. * * 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) { … } /** * hb_font_get_glyph_kerning_for_direction: * @font: #hb_font_t to work upon * @first_glyph: The glyph ID of the first glyph in the glyph pair to query * @second_glyph: The glyph ID of the second glyph in the glyph pair to query * @direction: The direction of the text segment * @x: (out): The horizontal kerning-adjustment value retrieved * @y: (out): The vertical kerning-adjustment value retrieved * * Fetches the kerning-adjustment value for a glyph-pair in the specified font. * * Calls the appropriate direction-specific variant (horizontal * or vertical) depending on the value of @direction. * * 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) { … } /** * hb_font_get_glyph_extents_for_origin: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @direction: The direction of the text segment * @extents: (out): The #hb_glyph_extents_t retrieved * * Fetches the #hb_glyph_extents_t data for a glyph ID * in the specified font, with respect to the origin in * a text segment in the specified direction. * * Calls the appropriate direction-specific variant (horizontal * or vertical) depending on the value of @direction. * * Return value: `true` if data found, `false` otherwise * * 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) { … } /** * hb_font_get_glyph_contour_point_for_origin: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @point_index: The contour-point index to query * @direction: The direction of the text segment * @x: (out): The X value retrieved for the contour point * @y: (out): The Y value retrieved for the contour point * * Fetches the (X,Y) coordinates of a specified contour-point index * in the specified glyph ID in the specified font, with respect * to the origin in a text segment in the specified direction. * * Calls the appropriate direction-specific variant (horizontal * or vertical) depending on the value of @direction. * * Return value: `true` if data found, `false` otherwise * * 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) { … } /** * hb_font_glyph_to_string: * @font: #hb_font_t to work upon * @glyph: The glyph ID to query * @s: (out) (array length=size): The string containing the glyph name * @size: Length of string @s * * Fetches the name of the specified glyph ID in @font and returns * it in string @s. * * If the glyph ID has no name in @font, a string of the form `gidDDD` is * generated, with `DDD` being the glyph ID. * * According to the OpenType specification, glyph names are limited to 63 * characters and can only contain (a subset of) ASCII. * * Since: 0.9.2 **/ void hb_font_glyph_to_string (hb_font_t *font, hb_codepoint_t glyph, char *s, unsigned int size) { … } /** * hb_font_glyph_from_string: * @font: #hb_font_t to work upon * @s: (array length=len) (element-type uint8_t): string to query * @len: The length of the string @s * @glyph: (out): The glyph ID corresponding to the string requested * * Fetches the glyph ID from @font that matches the specified string. * Strings of the format `gidDDD` or `uniUUUU` are parsed automatically. * * <note>Note: @len == -1 means the string is null-terminated.</note> * * Return value: `true` if data found, `false` otherwise * * Since: 0.9.2 **/ hb_bool_t hb_font_glyph_from_string (hb_font_t *font, const char *s, int len, hb_codepoint_t *glyph) { … } /* * hb_font_t */ DEFINE_NULL_INSTANCE (hb_font_t) = …; static hb_font_t * _hb_font_create (hb_face_t *face) { … } /** * hb_font_create: * @face: a face. * * Constructs a new font object from the specified face. * * <note>Note: If @face's index value (as passed to hb_face_create() * has non-zero top 16-bits, those bits minus one are passed to * hb_font_set_var_named_instance(), effectively loading a named-instance * of a variable font, instead of the default-instance. This allows * specifying which named-instance to load by default when creating the * face.</note> * * Return value: (transfer full): The new font object * * Since: 0.9.2 **/ hb_font_t * hb_font_create (hb_face_t *face) { … } static void _hb_font_adopt_var_coords (hb_font_t *font, int *coords, /* 2.14 normalized */ float *design_coords, unsigned int coords_length) { … } /** * hb_font_create_sub_font: * @parent: The parent font object * * Constructs a sub-font font object from the specified @parent font, * replicating the parent's properties. * * Return value: (transfer full): The new sub-font font object * * Since: 0.9.2 **/ hb_font_t * hb_font_create_sub_font (hb_font_t *parent) { … } /** * hb_font_get_empty: * * Fetches the empty font object. * * Return value: (transfer full): The empty font object * * Since: 0.9.2 **/ hb_font_t * hb_font_get_empty () { … } /** * hb_font_reference: (skip) * @font: #hb_font_t to work upon * * Increases the reference count on the given font object. * * Return value: (transfer full): The @font object * * Since: 0.9.2 **/ hb_font_t * hb_font_reference (hb_font_t *font) { … } /** * hb_font_destroy: (skip) * @font: #hb_font_t to work upon * * Decreases the reference count on the given font object. When the * reference count reaches zero, the font is destroyed, * freeing all memory. * * Since: 0.9.2 **/ void hb_font_destroy (hb_font_t *font) { … } /** * hb_font_set_user_data: (skip) * @font: #hb_font_t to work upon * @key: The user-data key * @data: A pointer to the user data * @destroy: (nullable): A callback to call when @data is not needed anymore * @replace: Whether to replace an existing data with the same key * * Attaches a user-data key/data pair to the specified font object. * * Return value: `true` if success, `false` otherwise * * 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 /* May be NULL. */, hb_bool_t replace) { … } /** * hb_font_get_user_data: (skip) * @font: #hb_font_t to work upon * @key: The user-data key to query * * Fetches the user-data object associated with the specified key, * attached to the specified font object. * * Return value: (transfer none): Pointer to the user data * * Since: 0.9.2 **/ void * hb_font_get_user_data (const hb_font_t *font, hb_user_data_key_t *key) { … } /** * hb_font_make_immutable: * @font: #hb_font_t to work upon * * Makes @font immutable. * * Since: 0.9.2 **/ void hb_font_make_immutable (hb_font_t *font) { … } /** * hb_font_is_immutable: * @font: #hb_font_t to work upon * * Tests whether a font object is immutable. * * Return value: `true` if @font is immutable, `false` otherwise * * Since: 0.9.2 **/ hb_bool_t hb_font_is_immutable (hb_font_t *font) { … } /** * hb_font_get_serial: * @font: #hb_font_t to work upon * * Returns the internal serial number of the font. The serial * number is increased every time a setting on the font is * changed, using a setter function. * * Return value: serial number * * Since: 4.4.0 **/ unsigned int hb_font_get_serial (hb_font_t *font) { … } /** * hb_font_changed: * @font: #hb_font_t to work upon * * Notifies the @font that underlying font data has changed. * This has the effect of increasing the serial as returned * by hb_font_get_serial(), which invalidates internal caches. * * Since: 4.4.0 **/ void hb_font_changed (hb_font_t *font) { … } /** * hb_font_set_parent: * @font: #hb_font_t to work upon * @parent: The parent font object to assign * * Sets the parent font of @font. * * Since: 1.0.5 **/ void hb_font_set_parent (hb_font_t *font, hb_font_t *parent) { … } /** * hb_font_get_parent: * @font: #hb_font_t to work upon * * Fetches the parent font of @font. * * Return value: (transfer none): The parent font object * * Since: 0.9.2 **/ hb_font_t * hb_font_get_parent (hb_font_t *font) { … } /** * hb_font_set_face: * @font: #hb_font_t to work upon * @face: The #hb_face_t to assign * * Sets @face as the font-face value of @font. * * Since: 1.4.3 **/ void hb_font_set_face (hb_font_t *font, hb_face_t *face) { … } /** * hb_font_get_face: * @font: #hb_font_t to work upon * * Fetches the face associated with the specified font object. * * Return value: (transfer none): The #hb_face_t value * * Since: 0.9.2 **/ hb_face_t * hb_font_get_face (hb_font_t *font) { … } /** * hb_font_set_funcs: * @font: #hb_font_t to work upon * @klass: (closure font_data) (destroy destroy) (scope notified): The font-functions structure. * @font_data: Data to attach to @font * @destroy: (nullable): The function to call when @font_data is not needed anymore * * Replaces the font-functions structure attached to a font, updating * the font's user-data with @font-data and the @destroy callback. * * 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 /* May be NULL. */) { … } /** * hb_font_set_funcs_data: * @font: #hb_font_t to work upon * @font_data: (destroy destroy) (scope notified): Data to attach to @font * @destroy: (nullable): The function to call when @font_data is not needed anymore * * Replaces the user data attached to a font, updating the font's * @destroy callback. * * Since: 0.9.2 **/ void hb_font_set_funcs_data (hb_font_t *font, void *font_data, hb_destroy_func_t destroy /* May be NULL. */) { … } /** * hb_font_set_scale: * @font: #hb_font_t to work upon * @x_scale: Horizontal scale value to assign * @y_scale: Vertical scale value to assign * * Sets the horizontal and vertical scale of a font. * * The font scale is a number related to, but not the same as, * font size. Typically the client establishes a scale factor * to be used between the two. For example, 64, or 256, which * would be the fractional-precision part of the font scale. * This is necessary because #hb_position_t values are integer * types and you need to leave room for fractional values * in there. * * For example, to set the font size to 20, with 64 * levels of fractional precision you would call * `hb_font_set_scale(font, 20 * 64, 20 * 64)`. * * In the example above, even what font size 20 means is up to * you. It might be 20 pixels, or 20 points, or 20 millimeters. * HarfBuzz does not care about that. You can set the point * size of the font using hb_font_set_ptem(), and the pixel * size using hb_font_set_ppem(). * * The choice of scale is yours but needs to be consistent between * what you set here, and what you expect out of #hb_position_t * as well has draw / paint API output values. * * Fonts default to a scale equal to the UPEM value of their face. * A font with this setting is sometimes called an "unscaled" font. * * Since: 0.9.2 **/ void hb_font_set_scale (hb_font_t *font, int x_scale, int y_scale) { … } /** * hb_font_get_scale: * @font: #hb_font_t to work upon * @x_scale: (out): Horizontal scale value * @y_scale: (out): Vertical scale value * * Fetches the horizontal and vertical scale of a font. * * Since: 0.9.2 **/ void hb_font_get_scale (hb_font_t *font, int *x_scale, int *y_scale) { … } /** * hb_font_set_ppem: * @font: #hb_font_t to work upon * @x_ppem: Horizontal ppem value to assign * @y_ppem: Vertical ppem value to assign * * Sets the horizontal and vertical pixels-per-em (PPEM) of a font. * * These values are used for pixel-size-specific adjustment to * shaping and draw results, though for the most part they are * unused and can be left unset. * * Since: 0.9.2 **/ void hb_font_set_ppem (hb_font_t *font, unsigned int x_ppem, unsigned int y_ppem) { … } /** * hb_font_get_ppem: * @font: #hb_font_t to work upon * @x_ppem: (out): Horizontal ppem value * @y_ppem: (out): Vertical ppem value * * Fetches the horizontal and vertical points-per-em (ppem) of a font. * * Since: 0.9.2 **/ void hb_font_get_ppem (hb_font_t *font, unsigned int *x_ppem, unsigned int *y_ppem) { … } /** * hb_font_set_ptem: * @font: #hb_font_t to work upon * @ptem: font size in points. * * Sets the "point size" of a font. Set to zero to unset. * Used in CoreText to implement optical sizing. * * <note>Note: There are 72 points in an inch.</note> * * Since: 1.6.0 **/ void hb_font_set_ptem (hb_font_t *font, float ptem) { … } /** * hb_font_get_ptem: * @font: #hb_font_t to work upon * * Fetches the "point size" of a font. Used in CoreText to * implement optical sizing. * * Return value: Point size. A value of zero means "not set." * * Since: 1.6.0 **/ float hb_font_get_ptem (hb_font_t *font) { … } /** * hb_font_set_synthetic_bold: * @font: #hb_font_t to work upon * @x_embolden: the amount to embolden horizontally * @y_embolden: the amount to embolden vertically * @in_place: whether to embolden glyphs in-place * * Sets the "synthetic boldness" of a font. * * Positive values for @x_embolden / @y_embolden make a font * bolder, negative values thinner. Typical values are in the * 0.01 to 0.05 range. The default value is zero. * * Synthetic boldness is applied by offsetting the contour * points of the glyph shape. * * Synthetic boldness is applied when rendering a glyph via * hb_font_draw_glyph(). * * If @in_place is `false`, then glyph advance-widths are also * adjusted, otherwise they are not. The in-place mode is * useful for simulating [font grading](https://fonts.google.com/knowledge/glossary/grade). * * * Since: 7.0.0 **/ void hb_font_set_synthetic_bold (hb_font_t *font, float x_embolden, float y_embolden, hb_bool_t in_place) { … } /** * hb_font_get_synthetic_bold: * @font: #hb_font_t to work upon * @x_embolden: (out): return location for horizontal value * @y_embolden: (out): return location for vertical value * @in_place: (out): return location for in-place value * * Fetches the "synthetic boldness" parameters of a font. * * Since: 7.0.0 **/ void hb_font_get_synthetic_bold (hb_font_t *font, float *x_embolden, float *y_embolden, hb_bool_t *in_place) { … } /** * hb_font_set_synthetic_slant: * @font: #hb_font_t to work upon * @slant: synthetic slant value. * * Sets the "synthetic slant" of a font. By default is zero. * Synthetic slant is the graphical skew applied to the font * at rendering time. * * HarfBuzz needs to know this value to adjust shaping results, * metrics, and style values to match the slanted rendering. * * <note>Note: The glyph shape fetched via the hb_font_draw_glyph() * function is slanted to reflect this value as well.</note> * * <note>Note: The slant value is a ratio. For example, a * 20% slant would be represented as a 0.2 value.</note> * * Since: 3.3.0 **/ HB_EXTERN void hb_font_set_synthetic_slant (hb_font_t *font, float slant) { … } /** * hb_font_get_synthetic_slant: * @font: #hb_font_t to work upon * * Fetches the "synthetic slant" of a font. * * Return value: Synthetic slant. By default is zero. * * Since: 3.3.0 **/ HB_EXTERN float hb_font_get_synthetic_slant (hb_font_t *font) { … } #ifndef HB_NO_VAR /* * Variations */ /** * hb_font_set_variations: * @font: #hb_font_t to work upon * @variations: (array length=variations_length): Array of variation settings to apply * @variations_length: Number of variations to apply * * Applies a list of font-variation settings to a font. * * Note that this overrides all existing variations set on @font. * Axes not included in @variations will be effectively set to their * default values. * * Since: 1.4.2 */ void hb_font_set_variations (hb_font_t *font, const hb_variation_t *variations, unsigned int variations_length) { … } /** * hb_font_set_variation: * @font: #hb_font_t to work upon * @tag: The #hb_tag_t tag of the variation-axis name * @value: The value of the variation axis * * Change the value of one variation axis on the font. * * Note: This function is expensive to be called repeatedly. * If you want to set multiple variation axes at the same time, * use hb_font_set_variations() instead. * * Since: 7.1.0 */ void hb_font_set_variation (hb_font_t *font, hb_tag_t tag, float value) { … } /** * hb_font_set_var_coords_design: * @font: #hb_font_t to work upon * @coords: (array length=coords_length): Array of variation coordinates to apply * @coords_length: Number of coordinates to apply * * Applies a list of variation coordinates (in design-space units) * to a font. * * Note that this overrides all existing variations set on @font. * Axes not included in @coords will be effectively set to their * default values. * * Since: 1.4.2 */ void hb_font_set_var_coords_design (hb_font_t *font, const float *coords, unsigned int 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 int instance_index) { … } /** * hb_font_get_var_named_instance: * @font: a font. * * Returns the currently-set named-instance index of the font. * * Return value: Named-instance index or %HB_FONT_NO_VAR_NAMED_INSTANCE. * * Since: 7.0.0 **/ unsigned int hb_font_get_var_named_instance (hb_font_t *font) { … } /** * hb_font_set_var_coords_normalized: * @font: #hb_font_t to work upon * @coords: (array length=coords_length): Array of variation coordinates to apply * @coords_length: Number of coordinates to apply * * Applies a list of variation coordinates (in normalized units) * to a font. * * Note that this overrides all existing variations set on @font. * Axes not included in @coords will be effectively set to their * default values. * * <note>Note: Coordinates should be normalized to 2.14.</note> * * 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) { … } /** * hb_font_get_var_coords_normalized: * @font: #hb_font_t to work upon * @length: (out): Number of coordinates retrieved * * Fetches the list of normalized variation coordinates currently * set on a font. * * Note that this returned array may only contain values for some * (or none) of the axes; omitted axes effectively have zero values. * * Return value is valid as long as variation coordinates of the font * are not modified. * * Return value: coordinates array * * Since: 1.4.2 */ const int * hb_font_get_var_coords_normalized (hb_font_t *font, unsigned int *length) { … } /** * hb_font_get_var_coords_design: * @font: #hb_font_t to work upon * @length: (out): Number of coordinates retrieved * * Fetches the list of variation coordinates (in design-space units) currently * set on a font. * * Note that this returned array may only contain values for some * (or none) of the axes; omitted axes effectively have their default * values. * * Return value is valid as long as variation coordinates of the font * are not modified. * * Return value: coordinates array * * Since: 3.3.0 */ const float * hb_font_get_var_coords_design (hb_font_t *font, unsigned int *length) { … } #endif #ifndef HB_DISABLE_DEPRECATED /* * Deprecated get_glyph_func(): */ struct hb_trampoline_closure_t { … }; template <typename FuncType> struct hb_trampoline_t { … }; template <typename FuncType> static hb_trampoline_t<FuncType> * trampoline_create (FuncType func, void *user_data, hb_destroy_func_t destroy) { … } static void trampoline_reference (hb_trampoline_closure_t *closure) { … } static void trampoline_destroy (void *user_data) { … } 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) { … } 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_funcs_set_glyph_func: * @ffuncs: The font-functions structure * @func: (closure user_data) (destroy destroy) (scope notified): callback function * @user_data: data to pass to @func * @destroy: (nullable): 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 /* May be NULL. */) { … } #endif #ifndef HB_DISABLE_DEPRECATED void hb_font_funcs_set_glyph_shape_func (hb_font_funcs_t *ffuncs, hb_font_get_glyph_shape_func_t func, void *user_data, hb_destroy_func_t destroy /* May be NULL. */) { … } #endif
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