File: pangofc-decoder.c

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/* Pango
 * pangofc-decoder.c: Custom font encoder/decoders
 *
 * Copyright (C) 2004 Red Hat Software
 *
 * 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.
 */

/**
 * SECTION:pangofc-decoder
 * @short_description:Custom font encoding handling
 * @title:PangoFcDecoder
 *
 * PangoFcDecoder represents a decoder that an application provides
 * for handling a font that is encoded in a custom way.
 */
#include "config.h"
#include "pangofc-decoder.h"

G_DEFINE_ABSTRACT_TYPE (PangoFcDecoder, pango_fc_decoder, G_TYPE_OBJECT)

static void
pango_fc_decoder_init (PangoFcDecoder *decoder G_GNUC_UNUSED)
{
}

static void
pango_fc_decoder_class_init (PangoFcDecoderClass *klass G_GNUC_UNUSED)
{
}

/**
 * pango_fc_decoder_get_charset:
 * @decoder: a #PangoFcDecoder
 * @fcfont: the #PangoFcFont to query.
 *
 * Generates an #FcCharSet of supported characters for the fcfont
 * given.  The returned #FcCharSet will be a reference to an
 * internal value stored by the #PangoFcDecoder and must not
 * be modified or freed.
 *
 * Return value: the #FcCharset for @fcfont; must not be modified
 *   or freed.
 *
 * Since: 1.6
 **/
FcCharSet *
pango_fc_decoder_get_charset (PangoFcDecoder *decoder,
			      PangoFcFont    *fcfont)
{
  g_return_val_if_fail (PANGO_IS_FC_DECODER (decoder), NULL);

  return PANGO_FC_DECODER_GET_CLASS (decoder)->get_charset (decoder, fcfont);
}

/**
 * pango_fc_decoder_get_glyph:
 * @decoder: a #PangoFcDecoder
 * @fcfont: a #PangoFcFont to query.
 * @wc: the Unicode code point to convert to a single #PangoGlyph.
 *
 * Generates a #PangoGlyph for the given Unicode point using the
 * custom decoder. For complex scripts where there can be multiple
 * glyphs for a single character, the decoder will return whatever
 * glyph is most convenient for it. (Usually whatever glyph is directly
 * in the fonts character map table.)
 *
 * Return value: the glyph index, or 0 if the glyph isn't
 * covered by the font.
 *
 * Since: 1.6
 **/
PangoGlyph
pango_fc_decoder_get_glyph (PangoFcDecoder *decoder,
			    PangoFcFont    *fcfont,
			    guint32         wc)
{
  g_return_val_if_fail (PANGO_IS_FC_DECODER (decoder), 0);

  return PANGO_FC_DECODER_GET_CLASS (decoder)->get_glyph (decoder, fcfont, wc);
}