8143177: Integrate harfbuzz opentype layout engine per JEP 258
Reviewed-by: srl, vadim, serb
/*
* 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: 0.9.2
**/
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: 0.9.2
**/
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: 0.9.2
**/
hb_font_funcs_t *
hb_font_funcs_reference (hb_font_funcs_t *ffuncs)
{
return hb_object_reference (ffuncs);
}
/**
* hb_font_funcs_destroy: (skip)
* @ffuncs: font functions.
*
*
*
* Since: 0.9.2
**/
void
hb_font_funcs_destroy (hb_font_funcs_t *ffuncs)
{
if (!hb_object_destroy (ffuncs)) return;
#define HB_FONT_FUNC_IMPLEMENT(name) if (ffuncs->destroy.name) \
ffuncs->destroy.name (ffuncs->user_data.name);
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_FONT_FUNC_IMPLEMENT
free (ffuncs);
}
/**
* hb_font_funcs_set_user_data: (skip)
* @ffuncs: font functions.
* @key:
* @data:
* @destroy:
* @replace:
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs,
hb_user_data_key_t *key,
void * data,
hb_destroy_func_t destroy,
hb_bool_t replace)
{
return hb_object_set_user_data (ffuncs, key, data, destroy, replace);
}
/**
* hb_font_funcs_get_user_data: (skip)
* @ffuncs: font functions.
* @key:
*
*
*
* Return value: (transfer none):
*
* Since: 0.9.2
**/
void *
hb_font_funcs_get_user_data (hb_font_funcs_t *ffuncs,
hb_user_data_key_t *key)
{
return hb_object_get_user_data (ffuncs, key);
}
/**
* hb_font_funcs_make_immutable:
* @ffuncs: font functions.
*
*
*
* Since: 0.9.2
**/
void
hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs)
{
if (unlikely (hb_object_is_inert (ffuncs)))
return;
ffuncs->immutable = true;
}
/**
* hb_font_funcs_is_immutable:
* @ffuncs: font functions.
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs)
{
return 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: 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)
{
return font->get_glyph (unicode, variation_selector, glyph);
}
/**
* hb_font_get_glyph_h_advance:
* @font: a font.
* @glyph:
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_position_t
hb_font_get_glyph_h_advance (hb_font_t *font,
hb_codepoint_t glyph)
{
return font->get_glyph_h_advance (glyph);
}
/**
* hb_font_get_glyph_v_advance:
* @font: a font.
* @glyph:
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_position_t
hb_font_get_glyph_v_advance (hb_font_t *font,
hb_codepoint_t glyph)
{
return font->get_glyph_v_advance (glyph);
}
/**
* hb_font_get_glyph_h_origin:
* @font: a font.
* @glyph:
* @x: (out):
* @y: (out):
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_get_glyph_h_origin (hb_font_t *font,
hb_codepoint_t glyph,
hb_position_t *x, hb_position_t *y)
{
return font->get_glyph_h_origin (glyph, x, y);
}
/**
* hb_font_get_glyph_v_origin:
* @font: a font.
* @glyph:
* @x: (out):
* @y: (out):
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_get_glyph_v_origin (hb_font_t *font,
hb_codepoint_t glyph,
hb_position_t *x, hb_position_t *y)
{
return font->get_glyph_v_origin (glyph, x, y);
}
/**
* hb_font_get_glyph_h_kerning:
* @font: a font.
* @left_glyph:
* @right_glyph:
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_position_t
hb_font_get_glyph_h_kerning (hb_font_t *font,
hb_codepoint_t left_glyph, hb_codepoint_t right_glyph)
{
return font->get_glyph_h_kerning (left_glyph, right_glyph);
}
/**
* hb_font_get_glyph_v_kerning:
* @font: a font.
* @top_glyph:
* @bottom_glyph:
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_position_t
hb_font_get_glyph_v_kerning (hb_font_t *font,
hb_codepoint_t top_glyph, hb_codepoint_t bottom_glyph)
{
return font->get_glyph_v_kerning (top_glyph, bottom_glyph);
}
/**
* hb_font_get_glyph_extents:
* @font: a font.
* @glyph:
* @extents: (out):
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_get_glyph_extents (hb_font_t *font,
hb_codepoint_t glyph,
hb_glyph_extents_t *extents)
{
return font->get_glyph_extents (glyph, extents);
}
/**
* hb_font_get_glyph_contour_point:
* @font: a font.
* @glyph:
* @point_index:
* @x: (out):
* @y: (out):
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_get_glyph_contour_point (hb_font_t *font,
hb_codepoint_t glyph, unsigned int point_index,
hb_position_t *x, hb_position_t *y)
{
return font->get_glyph_contour_point (glyph, point_index, x, y);
}
/**
* hb_font_get_glyph_name:
* @font: a font.
* @glyph:
* @name: (array length=size):
* @size:
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_get_glyph_name (hb_font_t *font,
hb_codepoint_t glyph,
char *name, unsigned int size)
{
return font->get_glyph_name (glyph, name, size);
}
/**
* hb_font_get_glyph_from_name:
* @font: a font.
* @name: (array length=len):
* @len:
* @glyph: (out):
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_get_glyph_from_name (hb_font_t *font,
const char *name, int len, /* -1 means nul-terminated */
hb_codepoint_t *glyph)
{
return font->get_glyph_from_name (name, len, glyph);
}
/* A bit higher-level, and with fallback */
/**
* hb_font_get_glyph_advance_for_direction:
* @font: a font.
* @glyph:
* @direction:
* @x: (out):
* @y: (out):
*
*
*
* Since: 0.9.2
**/
void
hb_font_get_glyph_advance_for_direction (hb_font_t *font,
hb_codepoint_t glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y)
{
return font->get_glyph_advance_for_direction (glyph, direction, x, y);
}
/**
* hb_font_get_glyph_origin_for_direction:
* @font: a font.
* @glyph:
* @direction:
* @x: (out):
* @y: (out):
*
*
*
* Since: 0.9.2
**/
void
hb_font_get_glyph_origin_for_direction (hb_font_t *font,
hb_codepoint_t glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y)
{
return font->get_glyph_origin_for_direction (glyph, direction, x, y);
}
/**
* hb_font_add_glyph_origin_for_direction:
* @font: a font.
* @glyph:
* @direction:
* @x: (out):
* @y: (out):
*
*
*
* Since: 0.9.2
**/
void
hb_font_add_glyph_origin_for_direction (hb_font_t *font,
hb_codepoint_t glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y)
{
return font->add_glyph_origin_for_direction (glyph, direction, x, y);
}
/**
* hb_font_subtract_glyph_origin_for_direction:
* @font: a font.
* @glyph:
* @direction:
* @x: (out):
* @y: (out):
*
*
*
* Since: 0.9.2
**/
void
hb_font_subtract_glyph_origin_for_direction (hb_font_t *font,
hb_codepoint_t glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y)
{
return font->subtract_glyph_origin_for_direction (glyph, direction, x, y);
}
/**
* hb_font_get_glyph_kerning_for_direction:
* @font: a font.
* @first_glyph:
* @second_glyph:
* @direction:
* @x: (out):
* @y: (out):
*
*
*
* Since: 0.9.2
**/
void
hb_font_get_glyph_kerning_for_direction (hb_font_t *font,
hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y)
{
return font->get_glyph_kerning_for_direction (first_glyph, second_glyph, direction, x, y);
}
/**
* hb_font_get_glyph_extents_for_origin:
* @font: a font.
* @glyph:
* @direction:
* @extents: (out):
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_get_glyph_extents_for_origin (hb_font_t *font,
hb_codepoint_t glyph,
hb_direction_t direction,
hb_glyph_extents_t *extents)
{
return font->get_glyph_extents_for_origin (glyph, direction, extents);
}
/**
* hb_font_get_glyph_contour_point_for_origin:
* @font: a font.
* @glyph:
* @point_index:
* @direction:
* @x: (out):
* @y: (out):
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_get_glyph_contour_point_for_origin (hb_font_t *font,
hb_codepoint_t glyph, unsigned int point_index,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y)
{
return font->get_glyph_contour_point_for_origin (glyph, point_index, direction, x, y);
}
/* Generates gidDDD if glyph has no name. */
/**
* hb_font_glyph_to_string:
* @font: a font.
* @glyph:
* @s: (array length=size):
* @size:
*
*
*
* Since: 0.9.2
**/
void
hb_font_glyph_to_string (hb_font_t *font,
hb_codepoint_t glyph,
char *s, unsigned int size)
{
font->glyph_to_string (glyph, s, size);
}
/* Parses gidDDD and uniUUUU strings automatically. */
/**
* hb_font_glyph_from_string:
* @font: a font.
* @s: (array length=len) (element-type uint8_t):
* @len:
* @glyph: (out):
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_glyph_from_string (hb_font_t *font,
const char *s, int len, /* -1 means nul-terminated */
hb_codepoint_t *glyph)
{
return font->glyph_from_string (s, len, glyph);
}
/*
* hb_font_t
*/
/**
* hb_font_create: (Xconstructor)
* @face: a face.
*
*
*
* Return value: (transfer full):
*
* Since: 0.9.2
**/
hb_font_t *
hb_font_create (hb_face_t *face)
{
hb_font_t *font;
if (unlikely (!face))
face = hb_face_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 ();
font->x_scale = font->y_scale = hb_face_get_upem (face);
return font;
}
/**
* hb_font_create_sub_font:
* @parent: parent font.
*
*
*
* Return value: (transfer full):
*
* Since: 0.9.2
**/
hb_font_t *
hb_font_create_sub_font (hb_font_t *parent)
{
if (unlikely (!parent))
parent = hb_font_get_empty ();
hb_font_t *font = hb_font_create (parent->face);
if (unlikely (hb_object_is_inert (font)))
return font;
font->parent = hb_font_reference (parent);
font->x_scale = parent->x_scale;
font->y_scale = parent->y_scale;
font->x_ppem = parent->x_ppem;
font->y_ppem = parent->y_ppem;
return font;
}
/**
* hb_font_get_empty:
*
*
*
* Return value: (transfer full)
*
* Since: 0.9.2
**/
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: 0.9.2
**/
hb_font_t *
hb_font_reference (hb_font_t *font)
{
return hb_object_reference (font);
}
/**
* hb_font_destroy: (skip)
* @font: a font.
*
*
*
* Since: 0.9.2
**/
void
hb_font_destroy (hb_font_t *font)
{
if (!hb_object_destroy (font)) return;
#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: 0.9.2
**/
hb_bool_t
hb_font_set_user_data (hb_font_t *font,
hb_user_data_key_t *key,
void * data,
hb_destroy_func_t destroy,
hb_bool_t replace)
{
return hb_object_set_user_data (font, key, data, destroy, replace);
}
/**
* hb_font_get_user_data: (skip)
* @font: a font.
* @key:
*
*
*
* Return value: (transfer none):
*
* Since: 0.9.2
**/
void *
hb_font_get_user_data (hb_font_t *font,
hb_user_data_key_t *key)
{
return hb_object_get_user_data (font, key);
}
/**
* hb_font_make_immutable:
* @font: a font.
*
*
*
* Since: 0.9.2
**/
void
hb_font_make_immutable (hb_font_t *font)
{
if (unlikely (hb_object_is_inert (font)))
return;
if (font->parent)
hb_font_make_immutable (font->parent);
font->immutable = true;
}
/**
* hb_font_is_immutable:
* @font: a font.
*
*
*
* Return value:
*
* Since: 0.9.2
**/
hb_bool_t
hb_font_is_immutable (hb_font_t *font)
{
return font->immutable;
}
/**
* hb_font_set_parent:
* @font: a font.
* @parent: new parent.
*
* Sets parent font of @font.
*
* Since: 1.0.5
**/
void
hb_font_set_parent (hb_font_t *font,
hb_font_t *parent)
{
if (font->immutable)
return;
if (!parent)
parent = hb_font_get_empty ();
hb_font_t *old = font->parent;
font->parent = hb_font_reference (parent);
hb_font_destroy (old);
}
/**
* hb_font_get_parent:
* @font: a font.
*
*
*
* Return value: (transfer none):
*
* Since: 0.9.2
**/
hb_font_t *
hb_font_get_parent (hb_font_t *font)
{
return font->parent;
}
/**
* hb_font_get_face:
* @font: a font.
*
*
*
* Return value: (transfer none):
*
* Since: 0.9.2
**/
hb_face_t *
hb_font_get_face (hb_font_t *font)
{
return font->face;
}
/**
* hb_font_set_funcs:
* @font: a font.
* @klass: (closure font_data) (destroy destroy) (scope notified):
* @font_data:
* @destroy:
*
*
*
* Since: 0.9.2
**/
void
hb_font_set_funcs (hb_font_t *font,
hb_font_funcs_t *klass,
void *font_data,
hb_destroy_func_t destroy)
{
if (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: 0.9.2
**/
void
hb_font_set_funcs_data (hb_font_t *font,
void *font_data,
hb_destroy_func_t destroy)
{
/* Destroy user_data? */
if (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: 0.9.2
**/
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: 0.9.2
**/
void
hb_font_get_scale (hb_font_t *font,
int *x_scale,
int *y_scale)
{
if (x_scale) *x_scale = font->x_scale;
if (y_scale) *y_scale = font->y_scale;
}
/**
* hb_font_set_ppem:
* @font: a font.
* @x_ppem:
* @y_ppem:
*
*
*
* Since: 0.9.2
**/
void
hb_font_set_ppem (hb_font_t *font,
unsigned int x_ppem,
unsigned int y_ppem)
{
if (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: 0.9.2
**/
void
hb_font_get_ppem (hb_font_t *font,
unsigned int *x_ppem,
unsigned int *y_ppem)
{
if (x_ppem) *x_ppem = font->x_ppem;
if (y_ppem) *y_ppem = font->y_ppem;
}