Add export of pangofc-decoder.h. Build pangofc-decoder.c.

Wed Jun  9 17:32:59 2004  Christopher Blizzard  <blizzard@redhat.com>

        * pango/Makefile.am: Add export of pangofc-decoder.h.  Build
        pangofc-decoder.c.

        * pango/pangofc-decoder.h pango/pangofc-decoder.c: New files.
        Virtual base class for any custom font decoders.

        * pango/pangofc-font.c: Add new PangoFcFontPrivate structure.

        * pango/pangofc-font.c (pango_fc_font_class_init): Attach new
        private structure using g_type_class_add_private().

        * pango/pangofc-font.c (pango_fc_font_finalize): Make sure to
        unset any decoders that are attached to the font.

        * pango/pangofc-font.c (pango_fc_font_get_coverage): When
        determining coverage, use a custom decoder if available.

        * pango/pangofc-font.c (pango_fc_font_has_char): When determining
        if a font has a character, use a custom decoder if available.

        * pango/pangofc-font.c (pango_fc_font_get_glyph): When doing
        single character to glyph convertions, use a custom decoder if
        available.

        * pango/pangofc-font.c (_pango_fc_font_get_decoder): New
        function.  Get the custom decoder for the given font.

        * pango/pangofc-font.c (_pango_fc_font_set_decoder): New
        function.  Set a custom decoder for the given font.

        * pango/pangofc-fontmap.c: Add structure PangoFcFindFuncInfo to
        keep track of callbacks to create custom decoders.  Modify
        PangoFcFontMapPrivate by adding a list of PangoFcFontFuncInfo
        callbacks that have been registered.

        * pango/pangofc-fontmap.c (pango_fc_font_map_add_find_func): New
        function.  Add callbacks to the fontmap that will create custom
        decoders when pango creates new fonts.

        * pango/pangofc-fontmap.c (pango_fc_font_map_finalize): Clear out
        any findfuncs that have been registered and notify them about
        destruction.

        * pango/pangofc-fontmap.c (pango_fc_font_map_new_font): When
        creating new fonts, call back to any registered find functions so
        they can create custom decoders for those fonts.  Attach those
        custom decoders to the newly created fonts.

        * pango/pangofc-fontmap.c (_pango_fc_font_map_get_coverage):
        Change the argument to take a PangoFcFont instead of an FcPattern.
        Call _pango_fc_font_map_fc_to_coverage instead of doing the
        conversion inline.

        * pango/pangofc-fontmap.c (_pango_fc_font_map_fc_to_coverage): New
        function.  Convert an FcCharSet to a PangoCoverage object.

        * pango/pangofc-fontmap.h: New declarations for
        pango_fc_font_map_add_decoder_find_func and
        PangoFcDecoderFindFunc.

        * pango/pangofc-private.h: New declarations for
        _pango_fc_font_map_fc_to_coverage, _pango_fc_font_get_decoder and
        _pango_fc_font_set_decoder.

1 files changed, 88 insertions, 0 deletions

diff --git a/pango/pangofc-decoder.c b/pango/pangofc-decoder.c
new file mode 100644
index 00000000..41e8c141
--- /dev/null
+++ b/pango/pangofc-decoder.c
@@ -0,0 +1,88 @@
+/* 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.
+ */
+
+#include "pangofc-decoder.h"
+
+G_DEFINE_ABSTRACT_TYPE (PangoFcDecoder, pango_fc_decoder, G_TYPE_OBJECT)
+
+static void
+pango_fc_decoder_init (PangoFcDecoder *decoder);
+
+static void
+pango_fc_decoder_class_init (PangoFcDecoderClass *klass);
+
+void
+pango_fc_decoder_init (PangoFcDecoder *decoder)
+{
+}
+
+void
+pango_fc_decoder_class_init (PangoFcDecoderClass *klass)
+{
+}
+
+/**
+ * pango_fc_decoder_get_charset:
+ * @decoder: A #PangoFcDecoder to use when querying the font for a
+ * supported #FcCharSet.
+ * @fcfont: The #PangoFcFont to query.
+ *
+ * Generates an #FcCharSet of supported characters for the fcfont
+ * given.  The returned #FcCharSet should be a reference to an
+ * internal value stored by the #PangoFcDecoder and will not be freed
+ * by Pango.
+ *
+ * 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 (fcfont);
+}
+
+/**
+ * pango_fc_decoder_get_glyph:
+ * @decoder: A #PangoFcDecoder to use when querying the font.
+ * @fcfont: The #PangoFcFont to query.
+ * @wc: The unicode code point that you would like to see converted to
+ * a single #PangoGlyph.
+ *
+ * Generates a #PangoGlyph for the given unicode point with the custom
+ * decoder.
+ *
+ * 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 (fcfont, wc);
+}