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/*
* pangocairo-ft-font.c: Freetype font handling
*
* Copyright (C) 2022 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "pango-features.h"
#include "pangocairo-private.h"
#include "pango-hbfont-private.h"
#include "pango-hbface-private.h"
#ifdef CAIRO_HAS_FT_FONT
#include <hb-ot.h>
#include <cairo-ft.h>
#include <freetype/ftmm.h>
cairo_font_face_t *
create_cairo_ft_font_face (Pango2Font *font)
{
static FT_Library ft_library;
Pango2HbFace *face = PANGO2_HB_FACE (font->face);
hb_blob_t *blob;
const char *blob_data;
unsigned int blob_length;
FT_Face ft_face;
hb_font_t *hb_font;
unsigned int num_coords;
const int *coords;
cairo_font_face_t *cairo_face;
static const cairo_user_data_key_t key;
static const cairo_user_data_key_t key2;
FT_Error error;
if (g_once_init_enter (&ft_library))
{
FT_Library library;
FT_Init_FreeType (&library);
g_once_init_leave (&ft_library, library);
}
hb_font = pango2_font_get_hb_font (font);
blob = hb_face_reference_blob (hb_font_get_face (hb_font));
blob_data = hb_blob_get_data (blob, &blob_length);
if ((error = FT_New_Memory_Face (ft_library,
(const FT_Byte *) blob_data,
blob_length,
hb_face_get_index (face->face),
&ft_face)) != 0)
{
hb_blob_destroy (blob);
g_warning ("FT_New_Memory_Face failed: %d %s", error, FT_Error_String (error));
return NULL;
}
coords = hb_font_get_var_coords_normalized (hb_font, &num_coords);
if (num_coords > 0)
{
FT_Fixed *ft_coords = (FT_Fixed *) g_alloca (num_coords * sizeof (FT_Fixed));
for (unsigned int i = 0; i < num_coords; i++)
ft_coords[i] = coords[i] << 2;
FT_Set_Var_Blend_Coordinates (ft_face, num_coords, ft_coords);
}
cairo_face = cairo_ft_font_face_create_for_ft_face (ft_face, FT_LOAD_NO_HINTING | FT_LOAD_COLOR);
if (face->embolden)
cairo_ft_font_face_set_synthesize (cairo_face, CAIRO_FT_SYNTHESIZE_BOLD);
cairo_font_face_set_user_data (cairo_face, &key,
ft_face, (cairo_destroy_func_t) FT_Done_Face);
cairo_font_face_set_user_data (cairo_face, &key2,
blob, (cairo_destroy_func_t) hb_blob_destroy);
return cairo_face;
}
#endif
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