118 lines
2.8 KiB
C
118 lines
2.8 KiB
C
/* -*- mode: C; c-basic-offset: 4 -*- */
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#include <stdlib.h>
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include <libgnomevfs/gnome-vfs.h>
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static unsigned long
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vfs_stream_read(FT_Stream stream,
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unsigned long offset,
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unsigned char *buffer,
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unsigned long count)
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{
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GnomeVFSHandle *handle = (GnomeVFSHandle *)stream->descriptor.pointer;
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GnomeVFSFileSize bytes_read = 0;
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if (gnome_vfs_seek(handle, GNOME_VFS_SEEK_START, offset) != GNOME_VFS_OK)
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return 0;
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if (count > 0) {
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if (gnome_vfs_read(handle, buffer, count, &bytes_read) != GNOME_VFS_OK)
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return 0;
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}
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return bytes_read;
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}
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static void
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vfs_stream_close(FT_Stream stream)
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{
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GnomeVFSHandle *handle = (GnomeVFSHandle *)stream->descriptor.pointer;
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g_message("closing handle");
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if (!handle)
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return;
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gnome_vfs_close(handle);
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stream->descriptor.pointer = NULL;
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stream->size = 0;
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stream->base = 0;
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}
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static FT_Error
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vfs_stream_open(FT_Stream stream,
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const char *uri)
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{
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GnomeVFSHandle *handle;
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GnomeVFSFileInfo *finfo;
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if (!stream)
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return FT_Err_Invalid_Stream_Handle;
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if (gnome_vfs_open(&handle, uri,
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GNOME_VFS_OPEN_READ | GNOME_VFS_OPEN_RANDOM) != GNOME_VFS_OK) {
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g_message("could not open URI");
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return FT_Err_Cannot_Open_Resource;
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}
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finfo = gnome_vfs_file_info_new();
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if (gnome_vfs_get_file_info_from_handle(handle, finfo,0) != GNOME_VFS_OK) {
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g_warning("could not get file info");
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gnome_vfs_file_info_unref(finfo);
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gnome_vfs_close(handle);
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return FT_Err_Cannot_Open_Resource;
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}
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if ((finfo->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_SIZE) == 0) {
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g_warning("file info did not include file size");
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gnome_vfs_file_info_unref(finfo);
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gnome_vfs_close(handle);
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return FT_Err_Cannot_Open_Resource;
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}
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stream->size = finfo->size;
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gnome_vfs_file_info_unref(finfo);
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stream->descriptor.pointer = handle;
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stream->pathname.pointer = NULL;
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stream->pos = 0;
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stream->read = vfs_stream_read;
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stream->close = vfs_stream_close;
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return FT_Err_Ok;
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}
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/* load a typeface from a URI */
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FT_Error
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FT_New_URI_Face(FT_Library library,
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const gchar* uri,
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FT_Long face_index,
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FT_Face *aface)
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{
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FT_Open_Args args;
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FT_Stream stream;
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FT_Error error;
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if ((stream = calloc(1, sizeof(FT_Stream))) == NULL)
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return FT_Err_Out_Of_Memory;
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error = vfs_stream_open(stream, uri);
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if (error != FT_Err_Ok) {
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free(stream);
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return error;
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}
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#ifndef FT_OPEN_STREAM
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# define FT_OPEN_STREAM ft_open_stream
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#endif
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args.flags = FT_OPEN_STREAM;
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args.stream = stream;
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error = FT_Open_Face(library, &args, face_index, aface);
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if (error != FT_Err_Ok) {
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stream->close(stream);
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free(stream);
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return error;
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}
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return error;
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}
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