| /* |
| * Copyright © 2009 Red Hat, 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 |
| */ |
| |
| #if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) |
| #error "Include <hb.h> instead." |
| #endif |
| |
| #ifndef HB_FONT_H |
| #define HB_FONT_H |
| |
| #include "hb-common.h" |
| #include "hb-face.h" |
| #include "hb-draw.h" |
| |
| HB_BEGIN_DECLS |
| |
| /** |
| * hb_font_t: |
| * |
| * Data type for holding fonts. |
| * |
| */ |
| typedef struct hb_font_t hb_font_t; |
| |
| |
| /* |
| * hb_font_funcs_t |
| */ |
| |
| /** |
| * hb_font_funcs_t: |
| * |
| * Data type containing a set of virtual methods used for |
| * working on #hb_font_t font objects. |
| * |
| * HarfBuzz provides a lightweight default function for each of |
| * the methods in #hb_font_funcs_t. Client programs can implement |
| * their own replacements for the individual font functions, as |
| * needed, and replace the default by calling the setter for a |
| * method. |
| * |
| **/ |
| typedef struct hb_font_funcs_t hb_font_funcs_t; |
| |
| HB_EXTERN hb_font_funcs_t * |
| hb_font_funcs_create (void); |
| |
| HB_EXTERN hb_font_funcs_t * |
| hb_font_funcs_get_empty (void); |
| |
| HB_EXTERN hb_font_funcs_t * |
| hb_font_funcs_reference (hb_font_funcs_t *ffuncs); |
| |
| HB_EXTERN void |
| hb_font_funcs_destroy (hb_font_funcs_t *ffuncs); |
| |
| HB_EXTERN 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); |
| |
| |
| HB_EXTERN void * |
| hb_font_funcs_get_user_data (hb_font_funcs_t *ffuncs, |
| hb_user_data_key_t *key); |
| |
| |
| HB_EXTERN void |
| hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs); |
| |
| HB_EXTERN hb_bool_t |
| hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs); |
| |
| |
| /* font and glyph extents */ |
| |
| /** |
| * hb_font_extents_t: |
| * @ascender: The height of typographic ascenders. |
| * @descender: The depth of typographic descenders. |
| * @line_gap: The suggested line-spacing gap. |
| * |
| * Font-wide extent values, measured in font units. |
| * |
| * Note that typically @ascender is positive and @descender |
| * negative, in coordinate systems that grow up. |
| **/ |
| typedef struct hb_font_extents_t { |
| hb_position_t ascender; |
| hb_position_t descender; |
| hb_position_t line_gap; |
| /*< private >*/ |
| hb_position_t reserved9; |
| hb_position_t reserved8; |
| hb_position_t reserved7; |
| hb_position_t reserved6; |
| hb_position_t reserved5; |
| hb_position_t reserved4; |
| hb_position_t reserved3; |
| hb_position_t reserved2; |
| hb_position_t reserved1; |
| } hb_font_extents_t; |
| |
| /** |
| * hb_glyph_extents_t: |
| * @x_bearing: Distance from the x-origin to the left extremum of the glyph. |
| * @y_bearing: Distance from the top extremum of the glyph to the y-origin. |
| * @width: Distance from the left extremum of the glyph to the right extremum. |
| * @height: Distance from the top extremum of the glyph to the bottom extremum. |
| * |
| * Glyph extent values, measured in font units. |
| * |
| * Note that @height is negative, in coordinate systems that grow up. |
| **/ |
| typedef struct hb_glyph_extents_t { |
| hb_position_t x_bearing; |
| hb_position_t y_bearing; |
| hb_position_t width; |
| hb_position_t height; |
| } hb_glyph_extents_t; |
| |
| /* func types */ |
| |
| /** |
| * hb_font_get_font_extents_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @extents: (out): The font extents retrieved |
| * @user_data: User data pointer passed by the caller |
| * |
| * This method should retrieve the extents for a font. |
| * |
| **/ |
| typedef hb_bool_t (*hb_font_get_font_extents_func_t) (hb_font_t *font, void *font_data, |
| hb_font_extents_t *extents, |
| void *user_data); |
| |
| /** |
| * hb_font_get_font_h_extents_func_t: |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the extents for a font, for horizontal-direction |
| * text segments. Extents must be returned in an #hb_glyph_extents output |
| * parameter. |
| * |
| **/ |
| typedef hb_font_get_font_extents_func_t hb_font_get_font_h_extents_func_t; |
| |
| /** |
| * hb_font_get_font_v_extents_func_t: |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the extents for a font, for vertical-direction |
| * text segments. Extents must be returned in an #hb_glyph_extents output |
| * parameter. |
| * |
| **/ |
| typedef hb_font_get_font_extents_func_t hb_font_get_font_v_extents_func_t; |
| |
| |
| /** |
| * hb_font_get_nominal_glyph_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @unicode: The Unicode code point to query |
| * @glyph: (out): The glyph ID retrieved |
| * @user_data: User data pointer passed by the caller |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the nominal glyph ID for a specified Unicode code |
| * point. Glyph IDs must be returned in a #hb_codepoint_t output parameter. |
| * |
| * Return value: %true if data found, %false otherwise |
| * |
| **/ |
| typedef hb_bool_t (*hb_font_get_nominal_glyph_func_t) (hb_font_t *font, void *font_data, |
| hb_codepoint_t unicode, |
| hb_codepoint_t *glyph, |
| void *user_data); |
| |
| /** |
| * hb_font_get_variation_glyph_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @unicode: The Unicode code point to query |
| * @variation_selector: The variation-selector code point to query |
| * @glyph: (out): The glyph ID retrieved |
| * @user_data: User data pointer passed by the caller |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the glyph ID for a specified Unicode code point |
| * followed by a specified Variation Selector code point. Glyph IDs must be |
| * returned in a #hb_codepoint_t output parameter. |
| * |
| * Return value: %true if data found, %false otherwise |
| * |
| **/ |
| typedef hb_bool_t (*hb_font_get_variation_glyph_func_t) (hb_font_t *font, void *font_data, |
| hb_codepoint_t unicode, hb_codepoint_t variation_selector, |
| hb_codepoint_t *glyph, |
| void *user_data); |
| |
| |
| /** |
| * hb_font_get_nominal_glyphs_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @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 |
| * @user_data: User data pointer passed by the caller |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the nominal glyph IDs for a sequence of |
| * Unicode code points. Glyph IDs must be returned in a #hb_codepoint_t |
| * output parameter. |
| * |
| * Return value: the number of code points processed |
| * |
| **/ |
| typedef unsigned int (*hb_font_get_nominal_glyphs_func_t) (hb_font_t *font, void *font_data, |
| 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_font_get_glyph_advance_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @glyph: The glyph ID to query |
| * @user_data: User data pointer passed by the caller |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the advance for a specified glyph. The |
| * method must return an #hb_position_t. |
| * |
| * Return value: The advance of @glyph within @font |
| * |
| **/ |
| typedef hb_position_t (*hb_font_get_glyph_advance_func_t) (hb_font_t *font, void *font_data, |
| hb_codepoint_t glyph, |
| void *user_data); |
| |
| /** |
| * hb_font_get_glyph_h_advance_func_t: |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the advance for a specified glyph, in |
| * horizontal-direction text segments. Advances must be returned in |
| * an #hb_position_t output parameter. |
| * |
| **/ |
| typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_h_advance_func_t; |
| |
| /** |
| * hb_font_get_glyph_v_advance_func_t: |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the advance for a specified glyph, in |
| * vertical-direction text segments. Advances must be returned in |
| * an #hb_position_t output parameter. |
| * |
| **/ |
| typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_v_advance_func_t; |
| |
| /** |
| * hb_font_get_glyph_advances_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @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 |
| * @user_data: User data pointer passed by the caller |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the advances for a sequence of glyphs. |
| * |
| **/ |
| typedef void (*hb_font_get_glyph_advances_func_t) (hb_font_t* font, void* font_data, |
| unsigned int count, |
| const hb_codepoint_t *first_glyph, |
| unsigned glyph_stride, |
| hb_position_t *first_advance, |
| unsigned advance_stride, |
| void *user_data); |
| |
| /** |
| * hb_font_get_glyph_h_advances_func_t: |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the advances for a sequence of glyphs, in |
| * horizontal-direction text segments. |
| * |
| **/ |
| typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_h_advances_func_t; |
| |
| /** |
| * hb_font_get_glyph_v_advances_func_t: |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the advances for a sequence of glyphs, in |
| * vertical-direction text segments. |
| * |
| **/ |
| typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_v_advances_func_t; |
| |
| /** |
| * hb_font_get_glyph_origin_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @glyph: The glyph ID to query |
| * @x: (out): The X coordinate of the origin |
| * @y: (out): The Y coordinate of the origin |
| * @user_data: User data pointer passed by the caller |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the (X,Y) coordinates (in font units) of the |
| * origin for a glyph. Each coordinate must be returned in an #hb_position_t |
| * output parameter. |
| * |
| * Return value: %true if data found, %false otherwise |
| * |
| **/ |
| typedef hb_bool_t (*hb_font_get_glyph_origin_func_t) (hb_font_t *font, void *font_data, |
| hb_codepoint_t glyph, |
| hb_position_t *x, hb_position_t *y, |
| void *user_data); |
| |
| /** |
| * hb_font_get_glyph_h_origin_func_t: |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the (X,Y) coordinates (in font units) of the |
| * origin for a glyph, for horizontal-direction text segments. Each |
| * coordinate must be returned in an #hb_position_t output parameter. |
| * |
| **/ |
| typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_h_origin_func_t; |
| |
| /** |
| * hb_font_get_glyph_v_origin_func_t: |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the (X,Y) coordinates (in font units) of the |
| * origin for a glyph, for vertical-direction text segments. Each coordinate |
| * must be returned in an #hb_position_t output parameter. |
| * |
| **/ |
| typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_v_origin_func_t; |
| |
| /** |
| * hb_font_get_glyph_kerning_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @first_glyph: The glyph ID of the first glyph in the glyph pair |
| * @second_glyph: The glyph ID of the second glyph in the glyph pair |
| * @user_data: User data pointer passed by the caller |
| * |
| * This method should retrieve the kerning-adjustment value for a glyph-pair in |
| * the specified font, for horizontal text segments. |
| * |
| **/ |
| typedef hb_position_t (*hb_font_get_glyph_kerning_func_t) (hb_font_t *font, void *font_data, |
| hb_codepoint_t first_glyph, hb_codepoint_t second_glyph, |
| void *user_data); |
| /** |
| * hb_font_get_glyph_h_kerning_func_t: |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the kerning-adjustment value for a glyph-pair in |
| * the specified font, for horizontal text segments. |
| * |
| **/ |
| typedef hb_font_get_glyph_kerning_func_t hb_font_get_glyph_h_kerning_func_t; |
| |
| |
| /** |
| * hb_font_get_glyph_extents_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @glyph: The glyph ID to query |
| * @extents: (out): The #hb_glyph_extents_t retrieved |
| * @user_data: User data pointer passed by the caller |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the extents for a specified glyph. Extents must be |
| * returned in an #hb_glyph_extents output parameter. |
| * |
| * Return value: %true if data found, %false otherwise |
| * |
| **/ |
| typedef hb_bool_t (*hb_font_get_glyph_extents_func_t) (hb_font_t *font, void *font_data, |
| hb_codepoint_t glyph, |
| hb_glyph_extents_t *extents, |
| void *user_data); |
| |
| /** |
| * hb_font_get_glyph_contour_point_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @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 |
| * @user_data: User data pointer passed by the caller |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the (X,Y) coordinates (in font units) for a |
| * specified contour point in a glyph. Each coordinate must be returned as |
| * an #hb_position_t output parameter. |
| * |
| * Return value: %true if data found, %false otherwise |
| * |
| **/ |
| typedef hb_bool_t (*hb_font_get_glyph_contour_point_func_t) (hb_font_t *font, void *font_data, |
| hb_codepoint_t glyph, unsigned int point_index, |
| hb_position_t *x, hb_position_t *y, |
| void *user_data); |
| |
| |
| /** |
| * hb_font_get_glyph_name_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @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 |
| * @user_data: User data pointer passed by the caller |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the glyph name that corresponds to a |
| * glyph ID. The name should be returned in a string output parameter. |
| * |
| * Return value: %true if data found, %false otherwise |
| * |
| **/ |
| typedef hb_bool_t (*hb_font_get_glyph_name_func_t) (hb_font_t *font, void *font_data, |
| hb_codepoint_t glyph, |
| char *name, unsigned int size, |
| void *user_data); |
| |
| /** |
| * hb_font_get_glyph_from_name_func_t: |
| * @font: #hb_font_t to work upon |
| * @font_data: @font user data pointer |
| * @name: (array length=len): The name string to query |
| * @len: The length of the name queried |
| * @glyph: (out): The glyph ID retrieved |
| * @user_data: User data pointer passed by the caller |
| * |
| * A virtual method for the #hb_font_funcs_t of an #hb_font_t object. |
| * |
| * This method should retrieve the glyph ID that corresponds to a glyph-name |
| * string. |
| * |
| * Return value: %true if data found, %false otherwise |
| * |
| **/ |
| typedef hb_bool_t (*hb_font_get_glyph_from_name_func_t) (hb_font_t *font, void *font_data, |
| const char *name, int len, /* -1 means nul-terminated */ |
| hb_codepoint_t *glyph, |
| void *user_data); |
| |
| |
| /* func setters */ |
| |
| /** |
| * hb_font_funcs_set_font_h_extents_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_font_h_extents_func_t. |
| * |
| * Since: 1.1.2 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_font_h_extents_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_font_h_extents_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_font_v_extents_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_font_v_extents_func_t. |
| * |
| * Since: 1.1.2 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_font_v_extents_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_font_v_extents_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_nominal_glyph_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_nominal_glyph_func_t. |
| * |
| * Since: 1.2.3 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_nominal_glyph_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_nominal_glyph_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_nominal_glyphs_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_nominal_glyphs_func_t. |
| * |
| * Since: 2.0.0 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_nominal_glyphs_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_nominal_glyphs_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_variation_glyph_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_variation_glyph_func_t. |
| * |
| * Since: 1.2.3 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_variation_glyph_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_variation_glyph_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_glyph_h_advance_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_glyph_h_advance_func_t. |
| * |
| * Since: 0.9.2 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_glyph_h_advance_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_glyph_h_advance_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_glyph_v_advance_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_glyph_v_advance_func_t. |
| * |
| * Since: 0.9.2 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_glyph_v_advance_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_glyph_v_advance_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_glyph_h_advances_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_glyph_h_advances_func_t. |
| * |
| * Since: 1.8.6 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_glyph_h_advances_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_glyph_h_advances_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_glyph_v_advances_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_glyph_v_advances_func_t. |
| * |
| * Since: 1.8.6 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_glyph_v_advances_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_glyph_v_advances_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_glyph_h_origin_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_glyph_h_origin_func_t. |
| * |
| * Since: 0.9.2 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_glyph_h_origin_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_glyph_h_origin_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_glyph_v_origin_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_glyph_v_origin_func_t. |
| * |
| * Since: 0.9.2 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_glyph_v_origin_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_glyph_v_origin_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_glyph_h_kerning_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_glyph_h_kerning_func_t. |
| * |
| * Since: 0.9.2 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_glyph_h_kerning_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_glyph_h_kerning_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_glyph_extents_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_glyph_extents_func_t. |
| * |
| * Since: 0.9.2 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_glyph_extents_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_glyph_extents_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_glyph_contour_point_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_glyph_contour_point_func_t. |
| * |
| * Since: 0.9.2 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_glyph_contour_point_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_glyph_contour_point_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_glyph_name_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_glyph_name_func_t. |
| * |
| * Since: 0.9.2 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_glyph_name_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_glyph_name_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /** |
| * hb_font_funcs_set_glyph_from_name_func: |
| * @ffuncs: A font-function structure |
| * @func: (closure user_data) (destroy destroy) (scope notified): The callback function to assign |
| * @user_data: Data to pass to @func |
| * @destroy: (nullable): The function to call when @user_data is not needed anymore |
| * |
| * Sets the implementation function for #hb_font_get_glyph_from_name_func_t. |
| * |
| * Since: 0.9.2 |
| **/ |
| HB_EXTERN void |
| hb_font_funcs_set_glyph_from_name_func (hb_font_funcs_t *ffuncs, |
| hb_font_get_glyph_from_name_func_t func, |
| void *user_data, hb_destroy_func_t destroy); |
| |
| /* func dispatch */ |
| |
| HB_EXTERN hb_bool_t |
| hb_font_get_h_extents (hb_font_t *font, |
| hb_font_extents_t *extents); |
| HB_EXTERN hb_bool_t |
| hb_font_get_v_extents (hb_font_t *font, |
| hb_font_extents_t *extents); |
| |
| HB_EXTERN hb_bool_t |
| hb_font_get_nominal_glyph (hb_font_t *font, |
| hb_codepoint_t unicode, |
| hb_codepoint_t *glyph); |
| HB_EXTERN 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_EXTERN 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_EXTERN hb_position_t |
| hb_font_get_glyph_h_advance (hb_font_t *font, |
| hb_codepoint_t glyph); |
| HB_EXTERN hb_position_t |
| hb_font_get_glyph_v_advance (hb_font_t *font, |
| hb_codepoint_t glyph); |
| |
| HB_EXTERN 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_EXTERN 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_EXTERN 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_EXTERN 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_EXTERN hb_position_t |
| hb_font_get_glyph_h_kerning (hb_font_t *font, |
| hb_codepoint_t left_glyph, hb_codepoint_t right_glyph); |
| |
| HB_EXTERN hb_bool_t |
| hb_font_get_glyph_extents (hb_font_t *font, |
| hb_codepoint_t glyph, |
| hb_glyph_extents_t *extents); |
| |
| HB_EXTERN 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_EXTERN hb_bool_t |
| hb_font_get_glyph_name (hb_font_t *font, |
| hb_codepoint_t glyph, |
| char *name, unsigned int size); |
| HB_EXTERN 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); |
| |
| |
| /* high-level funcs, with fallback */ |
| |
| /* Calls either hb_font_get_nominal_glyph() if variation_selector is 0, |
| * otherwise calls hb_font_get_variation_glyph(). */ |
| HB_EXTERN 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_EXTERN void |
| hb_font_get_extents_for_direction (hb_font_t *font, |
| hb_direction_t direction, |
| hb_font_extents_t *extents); |
| HB_EXTERN 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_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_EXTERN 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_EXTERN 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_EXTERN 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_EXTERN 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_EXTERN 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_EXTERN 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); |
| |
| /* Generates gidDDD if glyph has no name. */ |
| HB_EXTERN void |
| hb_font_glyph_to_string (hb_font_t *font, |
| hb_codepoint_t glyph, |
| char *s, unsigned int size); |
| /* Parses gidDDD and uniUUUU strings automatically. */ |
| HB_EXTERN 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); |
| |
| |
| /* |
| * hb_font_t |
| */ |
| |
| /* Fonts are very light-weight objects */ |
| |
| HB_EXTERN hb_font_t * |
| hb_font_create (hb_face_t *face); |
| |
| HB_EXTERN hb_font_t * |
| hb_font_create_sub_font (hb_font_t *parent); |
| |
| HB_EXTERN hb_font_t * |
| hb_font_get_empty (void); |
| |
| HB_EXTERN hb_font_t * |
| hb_font_reference (hb_font_t *font); |
| |
| HB_EXTERN void |
| hb_font_destroy (hb_font_t *font); |
| |
| HB_EXTERN 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); |
| |
| |
| HB_EXTERN void * |
| hb_font_get_user_data (hb_font_t *font, |
| hb_user_data_key_t *key); |
| |
| HB_EXTERN void |
| hb_font_make_immutable (hb_font_t *font); |
| |
| HB_EXTERN hb_bool_t |
| hb_font_is_immutable (hb_font_t *font); |
| |
| HB_EXTERN void |
| hb_font_set_parent (hb_font_t *font, |
| hb_font_t *parent); |
| |
| HB_EXTERN hb_font_t * |
| hb_font_get_parent (hb_font_t *font); |
| |
| HB_EXTERN void |
| hb_font_set_face (hb_font_t *font, |
| hb_face_t *face); |
| |
| HB_EXTERN hb_face_t * |
| hb_font_get_face (hb_font_t *font); |
| |
| |
| HB_EXTERN void |
| hb_font_set_funcs (hb_font_t *font, |
| hb_font_funcs_t *klass, |
| void *font_data, |
| hb_destroy_func_t destroy); |
| |
| /* Be *very* careful with this function! */ |
| HB_EXTERN void |
| hb_font_set_funcs_data (hb_font_t *font, |
| void *font_data, |
| hb_destroy_func_t destroy); |
| |
| |
| HB_EXTERN void |
| hb_font_set_scale (hb_font_t *font, |
| int x_scale, |
| int y_scale); |
| |
| HB_EXTERN void |
| hb_font_get_scale (hb_font_t *font, |
| int *x_scale, |
| int *y_scale); |
| |
| /* |
| * A zero value means "no hinting in that direction" |
| */ |
| HB_EXTERN void |
| hb_font_set_ppem (hb_font_t *font, |
| unsigned int x_ppem, |
| unsigned int y_ppem); |
| |
| HB_EXTERN void |
| hb_font_get_ppem (hb_font_t *font, |
| unsigned int *x_ppem, |
| unsigned int *y_ppem); |
| |
| /* |
| * Point size per EM. Used for optical-sizing in CoreText. |
| * A value of zero means "not set". |
| */ |
| HB_EXTERN void |
| hb_font_set_ptem (hb_font_t *font, float ptem); |
| |
| HB_EXTERN float |
| hb_font_get_ptem (hb_font_t *font); |
| |
| HB_EXTERN void |
| hb_font_set_variations (hb_font_t *font, |
| const hb_variation_t *variations, |
| unsigned int variations_length); |
| |
| HB_EXTERN void |
| hb_font_set_var_coords_design (hb_font_t *font, |
| const float *coords, |
| unsigned int coords_length); |
| |
| #ifdef HB_EXPERIMENTAL_API |
| HB_EXTERN const float * |
| hb_font_get_var_coords_design (hb_font_t *font, |
| unsigned int *length); |
| #endif |
| |
| HB_EXTERN void |
| hb_font_set_var_coords_normalized (hb_font_t *font, |
| const int *coords, /* 2.14 normalized */ |
| unsigned int coords_length); |
| |
| HB_EXTERN const int * |
| hb_font_get_var_coords_normalized (hb_font_t *font, |
| unsigned int *length); |
| |
| HB_EXTERN void |
| hb_font_set_var_named_instance (hb_font_t *font, |
| unsigned instance_index); |
| |
| #ifdef HB_EXPERIMENTAL_API |
| HB_EXTERN hb_bool_t |
| hb_font_draw_glyph (hb_font_t *font, hb_codepoint_t glyph, |
| const hb_draw_funcs_t *funcs, void *user_data); |
| #endif |
| |
| HB_END_DECLS |
| |
| #endif /* HB_FONT_H */ |