/* Pango

 * pangocairo-private.h: private symbols for the Cairo backend

 *

 * Copyright (C) 2000,2004 Red Hat, Inc.

 *

 * 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 __PANGOCAIRO_PRIVATE_H__

#define __PANGOCAIRO_PRIVATE_H__

#include <pango/pangocairo.h>

#include <pango/pango-renderer.h>

G_BEGIN_DECLS

#define PANGO_CAIRO_FONT_MAP_GET_IFACE(obj)  (G_TYPE_INSTANCE_GET_INTERFACE ((obj), PANGO_TYPE_CAIRO_FONT_MAP, PangoCairoFontMapIface))

typedef struct _PangoCairoFontMapIface PangoCairoFontMapIface;

struct _PangoCairoFontMapIface

{

  GTypeInterface g_iface;

  void           (*set_resolution) (PangoCairoFontMap *fontmap,

				    double             dpi);

  double         (*get_resolution) (PangoCairoFontMap *fontmap);

  cairo_font_type_t (*get_font_type) (PangoCairoFontMap *fontmap);

};

#define PANGO_CAIRO_FONT_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), PANGO_TYPE_CAIRO_FONT, PangoCairoFontIface))

typedef struct _PangoCairoFontIface                  PangoCairoFontIface;

typedef struct _PangoCairoFontPrivate                PangoCairoFontPrivate;

typedef struct _PangoCairoFontHexBoxInfo             PangoCairoFontHexBoxInfo;

typedef struct _PangoCairoFontPrivateScaledFontData  PangoCairoFontPrivateScaledFontData;

typedef struct _PangoCairoFontGlyphExtentsCacheEntry PangoCairoFontGlyphExtentsCacheEntry;

struct _PangoCairoFontHexBoxInfo

{

  PangoCairoFont *font;

  int rows;

  double digit_width;

  double digit_height;

  double pad_x;

  double pad_y;

  double line_width;

  double box_descent;

  double box_height;

};

struct _PangoCairoFontPrivateScaledFontData

{

  cairo_matrix_t font_matrix;

  cairo_matrix_t ctm;

  cairo_font_options_t *options;

};

struct _PangoCairoFontPrivate

{

  PangoCairoFont *cfont;

  PangoCairoFontPrivateScaledFontData *data;

  cairo_scaled_font_t *scaled_font;

  PangoCairoFontHexBoxInfo *hbi;

  gboolean is_hinted;

  PangoGravity gravity;

  PangoRectangle font_extents;

  PangoCairoFontGlyphExtentsCacheEntry *glyph_extents_cache;

  GSList *metrics_by_lang;

};

struct _PangoCairoFontIface

{

  GTypeInterface g_iface;

  cairo_font_face_t *(*create_font_face) (PangoCairoFont *cfont);

  PangoFontMetrics *(*create_base_metrics_for_context) (PangoCairoFont *cfont,

							PangoContext   *context);

  gssize cf_priv_offset;

};

gboolean _pango_cairo_font_install (PangoFont *font,

				    cairo_t   *cr);

PangoFontMetrics * _pango_cairo_font_get_metrics (PangoFont     *font,

						  PangoLanguage *language);

PangoCairoFontHexBoxInfo *_pango_cairo_font_get_hex_box_info (PangoCairoFont *cfont);

void _pango_cairo_font_private_initialize (PangoCairoFontPrivate      *cf_priv,

					   PangoCairoFont             *font,

					   PangoGravity                gravity,

					   const cairo_font_options_t *font_options,

					   const PangoMatrix          *pango_ctm,

					   const cairo_matrix_t       *font_matrix);

void _pango_cairo_font_private_finalize (PangoCairoFontPrivate *cf_priv);

cairo_scaled_font_t *_pango_cairo_font_private_get_scaled_font (PangoCairoFontPrivate *cf_priv);

gboolean _pango_cairo_font_private_is_metrics_hinted (PangoCairoFontPrivate *cf_priv);

void _pango_cairo_font_private_get_glyph_extents (PangoCairoFontPrivate *cf_priv,

						  PangoGlyph             glyph,

						  PangoRectangle        *ink_rect,

						  PangoRectangle        *logical_rect);

#define PANGO_TYPE_CAIRO_RENDERER            (pango_cairo_renderer_get_type())

#define PANGO_CAIRO_RENDERER(object)         (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_CAIRO_RENDERER, PangoCairoRenderer))

#define PANGO_IS_CAIRO_RENDERER(object)      (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_CAIRO_RENDERER))

typedef struct _PangoCairoRenderer PangoCairoRenderer;

_PANGO_EXTERN

GType pango_cairo_renderer_get_type    (void) G_GNUC_CONST;

const cairo_font_options_t *_pango_cairo_context_get_merged_font_options (PangoContext *context);

G_END_DECLS

#endif /* __PANGOCAIRO_PRIVATE_H__ */