JDK14/Java14源码在线阅读
/*
* Copyright 漏 2009 Red Hat, Inc.
* Copyright 漏 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-machinery.hh"
#include "hb-ot.h"
/**
* SECTION:hb-font
* @title: hb-font
* @short_description: Font objects
* @include: hb.h
*
* Font objects represent a font face at a certain size and other
* parameters (pixels per EM, points per EM, variation settings.)
* Fonts are created from font faces, and are used as input to
* hb_shape() among other things.
**/
/*
* 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)
{
memset (extents, 0, sizeof (*extents));
return false;
}
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)
{
hb_bool_t ret = font->parent->get_font_h_extents (extents);
if (ret) {
extents->ascender = font->parent_scale_y_distance (extents->ascender);
extents->descender = font->parent_scale_y_distance (extents->descender);
extents->line_gap = font->parent_scale_y_distance (extents->line_gap);
}
return ret;
}
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)
{
memset (extents, 0, sizeof (*extents));
return false;
}
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)
{
hb_bool_t ret = font->parent->get_font_v_extents (extents);
if (ret) {
extents->ascender = font->parent_scale_x_distance (extents->ascender);
extents->descender = font->parent_scale_x_distance (extents->descender);
extents->line_gap = font->parent_scale_x_distance (extents->line_gap);
}
return ret;
}
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)
{
*glyph = 0;
return false;
}
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)
{
if (font->has_nominal_glyphs_func_set ())
{
return font->get_nominal_glyphs (1, &unicode, 0, glyph, 0);
}
return font->parent->get_nominal_glyph (unicode, glyph);
}
#define hb_font_get_nominal_glyphs_nil hb_font_get_nominal_glyphs_default
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)
{
if (font->has_nominal_glyph_func_set ())
{
for (unsigned int i = 0; i < count; i++)
{
if (!font->get_nominal_glyph (*first_unicode, first_glyph))
return i;
first_unicode = &StructAtOffsetUnaligned<hb_codepoint_t> (first_unicode, unicode_stride);
first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride);
}
return count;
}
return font->parent->get_nominal_glyphs (count,
first_unicode, unicode_stride,
first_glyph, glyph_stride);
}
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)
{
*glyph = 0;
return false;
}
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)
{
return font->parent->get_variation_glyph (unicode, variation_selector, glyph);
}
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)
{
return font->x_scale;
}
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)
{
if (font->has_glyph_h_advances_func_set ())
{
hb_position_t ret;
font->get_glyph_h_advances (1, &glyph, 0, &ret, 0);
return ret;
}
return font->parent_scale_x_distance (font->parent->get_glyph_h_advance (glyph));
}
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)
{
/* TODO use font_extents.ascender+descender */
return font->y_scale;
}
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)
{
if (font->has_glyph_v_advances_func_set ())
{
hb_position_t ret;
font->get_glyph_v_advances (1, &glyph, 0, &ret, 0);
return ret;
}
return font->parent_scale_y_distance (font->parent->get_glyph_v_advance (glyph));
}
#define hb_font_get_glyph_h_advances_nil hb_font_get_glyph_h_advances_default
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)
{
if (font->has_glyph_h_advance_func_set ())
{
for (unsigned int i = 0; i < count; i++)
{
*first_advance = font->get_glyph_h_advance (*first_glyph);
first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride);
first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
}
return;
}
font->parent->get_glyph_h_advances (count,
first_glyph, glyph_stride,
first_advance, advance_stride);
for (unsigned int i = 0; i < count; i++)
{
*first_advance = font->parent_scale_x_distance (*first_advance);
first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
}
}
#define hb_font_get_glyph_v_advances_nil hb_font_get_glyph_v_advances_default
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)
{
if (font->has_glyph_v_advance_func_set ())
{
for (unsigned int i = 0; i < count; i++)
{
*first_advance = font->get_glyph_v_advance (*first_glyph);
first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride);
first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
}
return;
}
font->parent->get_glyph_v_advances (count,
first_glyph, glyph_stride,
first_advance, advance_stride);
for (unsigned int i = 0; i < count; i++)
{
*first_advance = font->parent_scale_y_distance (*first_advance);
first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
}
}
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)
{
*x = *y = 0;
return true;
}
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)
{
hb_bool_t ret = font->parent->get_glyph_h_origin (glyph, x, y);
if (ret)
font->parent_scale_position (x, y);
return ret;
}
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)
{
*x = *y = 0;
return false;
}
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)
{
hb_bool_t ret = font->parent->get_glyph_v_origin (glyph, x, y);
if (ret)
font->parent_scale_position (x, y);
return ret;
}
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)
{
return 0;
}
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)
{
return font->parent_scale_x_distance (font->parent->get_glyph_h_kerning (left_glyph, right_glyph));
}
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)
{
return 0;
}
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)
{
return font->parent_scale_y_distance (font->parent->get_glyph_v_kerning (top_glyph, bottom_glyph));
}
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)
{
memset (extents, 0, sizeof (*extents));
return false;
}
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)
{
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;
}
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)
{
*x = *y = 0;
return false;
}
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)
{
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;
}
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)
{
if (size) *name = '\0';
return false;
}
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)
{
return font->parent->get_glyph_name (glyph, name, size);
}
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)
{
*glyph = 0;
return false;
}
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)
{
return font->parent->get_glyph_from_name (name, len, glyph);
}
DEFINE_NULL_INSTANCE (hb_font_funcs_t) =
{
HB_OBJECT_HEADER_STATIC,
{
#define HB_FONT_FUNC_IMPLEMENT(name) nullptr,
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_FONT_FUNC_IMPLEMENT
},
{
#define HB_FONT_FUNC_IMPLEMENT(name) nullptr,
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_FONT_FUNC_IMPLEMENT
},
{
{
#define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_nil,
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_FONT_FUNC_IMPLEMENT
}
}
};
static const hb_font_funcs_t _hb_font_funcs_default = {
HB_OBJECT_HEADER_STATIC,
{
#define HB_FONT_FUNC_IMPLEMENT(name) nullptr,
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_FONT_FUNC_IMPLEMENT
},
{
#define HB_FONT_FUNC_IMPLEMENT(name) nullptr,
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_FONT_FUNC_IMPLEMENT
},
{
{
#define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_default,
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 ()
{
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_default.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 ()
{
return const_cast<hb_font_funcs_t *> (&_hb_font_funcs_default);
}
/**
* 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 (hb_object_is_immutable (ffuncs))
return;
hb_object_make_immutable (ffuncs);
}
/**
* 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 hb_object_is_immutable (ffuncs);
}
#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 (hb_object_is_immutable (ffuncs)) { \
if (destroy) \
destroy (user_data); \
return; \
} \
\
if (ffuncs->destroy.name) \
ffuncs->destroy.name (ffuncs->user_data.name); \
\
if (func) { \
ffuncs->get.f.name = func; \
ffuncs->user_data.name = user_data; \
ffuncs->destroy.name = destroy; \
} else { \
ffuncs->get.f.name = hb_font_get_##name##_default; \
ffuncs->user_data.name = nullptr; \
ffuncs->destroy.name = nullptr; \
} \
}
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
#undef HB_FONT_FUNC_IMPLEMENT
bool
hb_font_t::has_func_set (unsigned int i)
{
return this->klass->get.array[i] != _hb_font_funcs_default.get.array[i];
}
bool
hb_font_t::has_func (unsigned int i)
{
return has_func_set (i) ||
(parent && parent != &_hb_Null_hb_font_t && parent->has_func (i));
}
/* Public getters */
/**
* hb_font_get_h_extents:
* @font: a font.
* @extents: (out):
*
*
*
* Return value:
*
* Since: 1.1.3
**/
hb_bool_t
hb_font_get_h_extents (hb_font_t *font,
hb_font_extents_t *extents)
{
return font->get_font_h_extents (extents);
}
/**
* hb_font_get_v_extents:
* @font: a font.
* @extents: (out):
*
*
*
* Return value:
*
* Since: 1.1.3
**/
hb_bool_t
hb_font_get_v_extents (hb_font_t *font,
hb_font_extents_t *extents)
{
return font->get_font_v_extents (extents);
}
/**
* 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)
{
if (unlikely (variation_selector))
return font->get_variation_glyph (unicode, variation_selector, glyph);
return font->get_nominal_glyph (unicode, glyph);
}
/**
* hb_font_get_nominal_glyph:
* @font: a font.
* @unicode:
* @glyph: (out):
*
*
*
* Return value:
*
* Since: 1.2.3
**/
hb_bool_t
hb_font_get_nominal_glyph (hb_font_t *font,
hb_codepoint_t unicode,
hb_codepoint_t *glyph)
{
return font->get_nominal_glyph (unicode, glyph);
}
/**
* hb_font_get_variation_glyph:
* @font: a font.
* @unicode:
* @variation_selector:
* @glyph: (out):
*
*
*
* Return value:
*
* 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)
{
return font->get_variation_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_advances:
* @font: a font.
*
*
*
* 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)
{
font->get_glyph_h_advances (count, first_glyph, glyph_stride, first_advance, advance_stride);
}
/**
* hb_font_get_glyph_v_advances:
* @font: a font.
*
*
*
* 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)
{
font->get_glyph_v_advances (count, first_glyph, glyph_stride, first_advance, advance_stride);
}
/**
* 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
* Deprecated: 2.0.0
**/
hb_position_t
hb_font_get_glyph_h_kerning (hb_font_t *font,
hb_codepoint_t left_glyph, hb_codepoint_t right_glyph)
{
return font->get_glyph_h_kerning (left_glyph, right_glyph);
}
/**
* hb_font_get_glyph_v_kerning:
* @font: a font.
* @top_glyph:
* @bottom_glyph:
*
*
*
* Return value:
*
* Since: 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)
{
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_extents_for_direction:
* @font: a font.
* @direction:
* @extents: (out):
*
*
*
* Since: 1.1.3
**/
void
hb_font_get_extents_for_direction (hb_font_t *font,
hb_direction_t direction,
hb_font_extents_t *extents)
{
return font->get_extents_for_direction (direction, extents);
}
/**
* 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_advances_for_direction:
* @font: a font.
* @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)
{
font->get_glyph_advances_for_direction (direction, count, first_glyph, glyph_stride, first_advance, advance_stride);
}
/**
* 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
* Deprecated: 2.0.0
**/
void
hb_font_get_glyph_kerning_for_direction (hb_font_t *font,
hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
hb_direction_t direction,
hb_position_t *x, hb_position_t *y)
{
return font->get_glyph_kerning_for_direction (first_glyph, second_glyph, direction, x, y);
}
/**
* hb_font_get_glyph_extents_for_origin:
* @font: a font.
* @glyph:
* @direction:
* @extents: (out):
*
*
*
* Return value:
*
* Since: 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
*/
DEFINE_NULL_INSTANCE (hb_font_t) =
{
HB_OBJECT_HEADER_STATIC,
nullptr, /* parent */
const_cast<hb_face_t *> (&_hb_Null_hb_face_t),
1000, /* x_scale */
1000, /* y_scale */
0, /* x_ppem */
0, /* y_ppem */
0, /* ptem */
0, /* num_coords */
nullptr, /* coords */
const_cast<hb_font_funcs_t *> (&_hb_Null_hb_font_funcs_t),
/* Zero for the rest is fine. */
};
static 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->parent = hb_font_get_empty ();
font->face = hb_face_reference (face);
font->klass = hb_font_funcs_get_empty ();
font->data.init0 (font);
font->x_scale = font->y_scale = hb_face_get_upem (face);
return font;
}
/**
* 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 = _hb_font_create (face);
/* Install our in-house, very lightweight, funcs. */
hb_ot_font_set_funcs (font);
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_immutable (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;
font->ptem = parent->ptem;
font->num_coords = parent->num_coords;
if (!font->num_coords)
font->coords = nullptr;
else
{
unsigned int size = parent->num_coords * sizeof (parent->coords[0]);
font->coords = (int *) malloc (size);
if (unlikely (!font->coords))
font->num_coords = 0;
else
memcpy (font->coords, parent->coords, size);
}
return font;
}
/**
* hb_font_get_empty:
*
*
*
* Return value: (transfer full)
*
* Since: 0.9.2
**/
hb_font_t *
hb_font_get_empty ()
{
return const_cast<hb_font_t *> (&Null(hb_font_t));
}
/**
* 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;
font->data.fini ();
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->coords);
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 (hb_object_is_immutable (font))
return;
if (font->parent)
hb_font_make_immutable (font->parent);
hb_object_make_immutable (font);
}
/**
* 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 hb_object_is_immutable (font);
}
/**
* 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 (hb_object_is_immutable (font))
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_set_face:
* @font: a font.
* @face: new face.
*
* Sets font-face of @font.
*
* Since: 1.4.3
**/
void
hb_font_set_face (hb_font_t *font,
hb_face_t *face)
{
if (hb_object_is_immutable (font))
return;
if (unlikely (!face))
face = hb_face_get_empty ();
hb_face_t *old = font->face;
font->face = hb_face_reference (face);
hb_face_destroy (old);
}
/**
* 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 (hb_object_is_immutable (font))
{
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 (hb_object_is_immutable (font))
{
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 (hb_object_is_immutable (font))
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 (hb_object_is_immutable (font))
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;
}
/**
* hb_font_set_ptem:
* @font: a font.
* @ptem: font size in points.
*
* Sets "point size" of the font. Set to 0 to unset.
*
* There are 72 points in an inch.
*
* Since: 1.6.0
**/
void
hb_font_set_ptem (hb_font_t *font, float ptem)
{
if (hb_object_is_immutable (font))
return;
font->ptem = ptem;
}
/**
* hb_font_get_ptem:
* @font: a font.
*
* Gets the "point size" of the font. A value of 0 means unset.
*
* Return value: Point size.
*
* Since: 0.9.2
**/
float
hb_font_get_ptem (hb_font_t *font)
{
return font->ptem;
}
/*
* Variations
*/
static void
_hb_font_adopt_var_coords_normalized (hb_font_t *font,
int *coords, /* 2.14 normalized */
unsigned int coords_length)
{
free (font->coords);
font->coords = coords;
font->num_coords = coords_length;
}
/**
* hb_font_set_variations:
*
* Since: 1.4.2
*/
void
hb_font_set_variations (hb_font_t *font,
const hb_variation_t *variations,
unsigned int variations_length)
{
if (hb_object_is_immutable (font))
return;
if (!variations_length)
{
hb_font_set_var_coords_normalized (font, nullptr, 0);
return;
}
unsigned int coords_length = hb_ot_var_get_axis_count (font->face);
int *normalized = coords_length ? (int *) calloc (coords_length, sizeof (int)) : nullptr;
if (unlikely (coords_length && !normalized))
return;
hb_ot_var_normalize_variations (font->face,
variations, variations_length,
normalized, coords_length);
_hb_font_adopt_var_coords_normalized (font, normalized, coords_length);
}
/**
* hb_font_set_var_coords_design:
*
* Since: 1.4.2
*/
void
hb_font_set_var_coords_design (hb_font_t *font,
const float *coords,
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