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/* -*- mode: C; c-basic-offset: 4 -*-
* fontilus - a collection of font utilities for MATE
* Copyright (C) 2002-2003 James Henstridge <james@daa.com.au>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <ft2build.h>
#include FT_FREETYPE_H
#include <gio/gio.h>
static unsigned long
vfs_stream_read(FT_Stream stream,
unsigned long offset,
unsigned char *buffer,
unsigned long count)
{
GFileInputStream *handle = (GFileInputStream *)stream->descriptor.pointer;
gssize bytes_read = 0;
if (! g_seekable_seek (G_SEEKABLE (handle), offset, G_SEEK_SET, NULL, NULL))
return 0;
if (count > 0) {
bytes_read = g_input_stream_read (G_INPUT_STREAM (handle), buffer, count, NULL, NULL);
if (bytes_read == -1)
return 0;
}
return bytes_read;
}
static void
vfs_stream_close(FT_Stream stream)
{
GFileInputStream *handle = (GFileInputStream *)stream->descriptor.pointer;
if (! handle)
return;
g_object_unref (handle);
stream->descriptor.pointer = NULL;
stream->size = 0;
stream->base = NULL;
}
static FT_Error
vfs_stream_open(FT_Stream stream,
const char *uri)
{
GFile *file;
GError *error = NULL;
GFileInfo *info;
GFileInputStream *handle;
if (!stream)
return FT_Err_Invalid_Stream_Handle;
file = g_file_new_for_uri (uri);
handle = g_file_read (file, NULL, &error);
if (! handle) {
g_message ("%s", error->message);
g_object_unref (file);
g_error_free (error);
return FT_Err_Cannot_Open_Resource;
}
info = g_file_query_info (file, G_FILE_ATTRIBUTE_STANDARD_SIZE,
G_FILE_QUERY_INFO_NONE, NULL, &error);
g_object_unref (file);
if (! info) {
g_warning ("%s", error->message);
g_error_free (error);
return FT_Err_Cannot_Open_Resource;
}
stream->size = g_file_info_get_size (info);
g_object_unref (info);
stream->descriptor.pointer = handle;
stream->pathname.pointer = NULL;
stream->pos = 0;
stream->read = vfs_stream_read;
stream->close = vfs_stream_close;
return FT_Err_Ok;
}
/* load a typeface from a URI */
FT_Error
FT_New_Face_From_URI(FT_Library library,
const gchar* uri,
FT_Long face_index,
FT_Face *aface)
{
FT_Open_Args args;
FT_Stream stream;
FT_Error error;
if ((stream = calloc(1, sizeof(*stream))) == NULL)
return FT_Err_Out_Of_Memory;
error = vfs_stream_open(stream, uri);
if (error != FT_Err_Ok) {
free(stream);
return error;
}
/* freetype-2.1.3 accidentally broke compatibility. */
#if defined(FT_OPEN_STREAM) && !defined(ft_open_stream)
# define ft_open_stream FT_OPEN_STREAM
#endif
args.flags = ft_open_stream;
args.stream = stream;
error = FT_Open_Face(library, &args, face_index, aface);
if (error != FT_Err_Ok) {
if (stream->close) stream->close(stream);
free(stream);
return error;
}
/* so that freetype will free the stream */
(*aface)->face_flags &= ~FT_FACE_FLAG_EXTERNAL_STREAM;
return error;
}
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