Since Xft may only be available statically without shlib deps, check for

Tue Dec 19 22:47:16 2000  Owen Taylor  <otaylor@redhat.com>

	* configure.in pango-config.in pangoxft.pc.in
	modules/basic/Makefile.am: Since Xft may only be available
	statically without shlib deps, check for FreeType libs explicitly
	and include them when linking, otherwise things won't work. Also,
	define FREETYPE_CFLAGS from freetype-config --cflags.

	* modules/basic/basic-xft.c pango/pangoxft-font{,map}.c: Fool
	Xft into not converting glyph indices by loading the
	face unencoded then calling FT_Set_Charmap ourselves.

	* pango/Makefile.am pango/pango-ot.h pango/opentype/* :Add start
	of opentype handling - most of the actually meat of the code here
	is the OpenType layout code from FreeType 1 ported to freetype2
	and adapted slighlty for our purposes.  Also, includes a
	incomplete OpenType-table-dumping code useful for figuring
	out what is going on.

	* pango/pangoxft.h pango/pangoxft-font.h: Add calls for
	getting FT_Face and PangoOTInfo from PangoXftFont.

	* modules/arabic/{Makefile.am,arabic-ot.[ch],arabic-xft.c}:
	Initial support for rendering Arabic with OpenType fonts.

1 files changed, 130 insertions, 0 deletions

diff --git a/pango/pango-ot.h b/pango/pango-ot.h
new file mode 100644
index 00000000..85788cc6
--- /dev/null
+++ b/pango/pango-ot.h
@@ -0,0 +1,130 @@
+/* Pango
+ * pango-ot.h:
+ *
+ * Copyright (C) 2000 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.
+ */
+
+#ifndef __PANGO_OT_H__
+#define __PANGO_OT_H__
+
+#include <freetype/freetype.h>
+#include <pango/pango-glyph.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+typedef guint32  PangoOTTag;
+
+typedef struct _PangoOTInfo    PangoOTInfo;
+typedef struct _PangoOTRuleset PangoOTRuleset;
+
+typedef enum 
+{
+  PANGO_OT_TABLE_GSUB,
+  PANGO_OT_TABLE_GPOS
+} PangoOTTableType;
+
+PangoOTInfo *pango_ot_info_new (FT_Face face);
+
+gboolean pango_ot_info_find_script   (PangoOTInfo      *info,
+				      PangoOTTableType  table_type,
+				      PangoOTTag        script_tag,
+				      guint            *script_index);
+gboolean pango_ot_info_find_language (PangoOTInfo      *info,
+				      PangoOTTableType  table_type,
+				      guint             script_index,
+				      PangoOTTag        language_tag,
+				      guint            *language_index,
+				      guint            *required_feature_index);
+gboolean pango_ot_info_find_feature  (PangoOTInfo      *info,
+				      PangoOTTableType  table_type,
+				      PangoOTTag        feature_tag,
+				      guint             script_index,
+				      guint             language_index,
+				      guint            *feature_index);
+
+PangoOTTag *pango_ot_info_list_scripts   (PangoOTInfo      *info,
+					  PangoOTTableType  table_type);
+PangoOTTag *pango_ot_info_list_languages (PangoOTInfo      *info,
+					  PangoOTTableType  table_type,
+					  guint             script_index,
+					  PangoOTTag        language_tag);
+PangoOTTag *pango_ot_info_list_features  (PangoOTInfo      *info,
+					  PangoOTTableType  table_type,
+					  PangoOTTag        tag,
+					  guint             script_index,
+					  guint             language_index);
+
+  /* A pointer to a function which loads a glyph.  Its parameters are
+   * the same as in a call to TT_Load_Glyph() -- if no glyph loading
+   * function will be registered with pango_ot_set_glyph_loader(),
+   * TT_Load_Glyph() will be called indeed.  The purpose of this function
+   * pointer is to provide a hook for caching glyph outlines and sbits
+   * (using the instance's generic pointer to hold the data).
+   *
+   * If for some reason no outline data is available (e.g. for an
+   * embedded bitmap glyph), _glyph->outline.n_points should be set to
+   * zero.  _glyph can be computed with
+   *
+   *    _glyph = HANDLE_Glyph( glyph )                                    
+   */
+typedef FT_Error  (*PangoOTGlyphLoader) (FT_Face      face,
+				         FT_UInt      glyphIndex,
+				         FT_Int       loadFlags,
+					 gpointer     data);
+
+ /* A pointer to a function which selects the alternate glyph.  `pos' is
+  * the position of the glyph with index `glyphID', `num_alternates'
+  * gives the number of alternates in the `alternates' array.  `data'
+  * points to the user-defined structure specified during a call to
+  * TT_GSUB_Register_Alternate_Function().  The function must return an
+  * index into the `alternates' array.
+  */
+typedef FT_UShort  (*PangoOTAlternateFunc) (FT_ULong    pos,
+					    FT_UShort   glyphID,
+					    FT_UShort   num_alternates,
+					    FT_UShort*  alternates,
+					    gpointer    data);
+
+
+PangoOTRuleset *pango_ot_ruleset_new (PangoOTInfo       *info);
+
+void pango_ot_ruleset_set_glyph_loader   (PangoOTRuleset       *ruleset,
+					  PangoOTGlyphLoader    func,
+					  gpointer              data,
+					  GDestroyNotify        notify);
+void pango_ot_ruleset_set_alternate_func (PangoOTRuleset       *ruleset,
+					  PangoOTAlternateFunc  func,
+					  gpointer              data,
+					  GDestroyNotify        notify);
+
+void            pango_ot_ruleset_add_feature (PangoOTRuleset   *ruleset,
+					      PangoOTTableType  table_type,
+					      guint             feature_index,
+					      gulong            property_bit);
+void            pango_ot_ruleset_shape       (PangoOTRuleset   *ruleset,
+					      PangoGlyphString *glyphs,
+					      gulong           *properties);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __PANGO_OT_H__ */