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/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */

/* cairo - a vector graphics library with display and print output

 *

 * Copyright © 2004 Red Hat, Inc

 * Copyright © 2006 Red Hat, Inc

 * Copyright © 2007 Adrian Johnson

 *

 * This library is free software; you can redistribute it and/or

 * modify it either under the terms of the GNU Lesser General Public

 * License version 2.1 as published by the Free Software Foundation

 * (the "LGPL") or, at your option, under the terms of the Mozilla

 * Public License Version 1.1 (the "MPL"). If you do not alter this

 * notice, a recipient may use your version of this file under either

 * the MPL or the LGPL.

 *

 * You should have received a copy of the LGPL along with this library

 * in the file COPYING-LGPL-2.1; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA

 * You should have received a copy of the MPL along with this library

 * in the file COPYING-MPL-1.1

 *

 * The contents of this file are subject to the Mozilla Public License

 * Version 1.1 (the "License"); you may not use this file except in

 * compliance with the License. You may obtain a copy of the License at

 * http://www.mozilla.org/MPL/

 *

 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY

 * OF ANY KIND, either express or implied. See the LGPL or the MPL for

 * the specific language governing rights and limitations.

 *

 * The Original Code is the cairo graphics library.

 *

 * The Initial Developer of the Original Code is University of Southern

 * California.

 *

 * Contributor(s):

 *	Kristian Høgsberg 

 *	Carl Worth 

 *	Adrian Johnson 

 */

#ifndef CAIRO_PDF_OPERATORS_H

#define CAIRO_PDF_OPERATORS_H

#include "cairo-compiler-private.h"

#include "cairo-error-private.h"

#include "cairo-types-private.h"

/* The glyph buffer size is based on the expected maximum glyphs in a

 * line so that an entire line can be emitted in as one string. If the

 * glyphs in a line exceeds this size the only downside is the slight

 * overhead of emitting two strings.

 */

#define PDF_GLYPH_BUFFER_SIZE 200

typedef cairo_int_status_t

(*cairo_pdf_operators_use_font_subset_t) (unsigned int  font_id,

					  unsigned int  subset_id,

					  void         *closure);

typedef struct _cairo_pdf_glyph {

    unsigned int glyph_index;

    double x_position;

    double x_advance;

} cairo_pdf_glyph_t;

typedef struct _cairo_pdf_operators {

    cairo_output_stream_t *stream;

    cairo_matrix_t cairo_to_pdf;

    cairo_scaled_font_subsets_t *font_subsets;

    cairo_pdf_operators_use_font_subset_t use_font_subset;

    void *use_font_subset_closure;

    cairo_bool_t use_actual_text;

    cairo_bool_t in_text_object; /* inside BT/ET pair */

    /* PDF text state */

    cairo_bool_t is_new_text_object; /* text object started but matrix and font not yet selected */

    unsigned int font_id;

    unsigned int subset_id;

    cairo_matrix_t text_matrix; /* PDF text matrix (Tlm in the PDF reference) */

    cairo_matrix_t cairo_to_pdftext; /* translate cairo coords to PDF text space */

    cairo_matrix_t font_matrix_inverse;

    double cur_x; /* Current position in PDF text space (Tm in the PDF reference) */

    double cur_y;

    int hex_width;

    cairo_bool_t is_latin;

    int num_glyphs;

    double glyph_buf_x_pos;

    cairo_pdf_glyph_t glyphs[PDF_GLYPH_BUFFER_SIZE];

    /* PDF line style */

    cairo_bool_t         has_line_style;

    double		 line_width;

    cairo_line_cap_t	 line_cap;

    cairo_line_join_t	 line_join;

    double		 miter_limit;

    cairo_bool_t         has_dashes;

} cairo_pdf_operators_t;

cairo_private void

_cairo_pdf_operators_init (cairo_pdf_operators_t       *pdf_operators,

			   cairo_output_stream_t       *stream,

			   cairo_matrix_t 	       *cairo_to_pdf,

			   cairo_scaled_font_subsets_t *font_subsets);

cairo_private cairo_status_t

_cairo_pdf_operators_fini (cairo_pdf_operators_t       *pdf_operators);

cairo_private void

_cairo_pdf_operators_set_font_subsets_callback (cairo_pdf_operators_t 		     *pdf_operators,

						cairo_pdf_operators_use_font_subset_t use_font_subset,

						void				     *closure);

cairo_private void

_cairo_pdf_operators_set_stream (cairo_pdf_operators_t 	 *pdf_operators,

				 cairo_output_stream_t   *stream);

cairo_private void

_cairo_pdf_operators_set_cairo_to_pdf_matrix (cairo_pdf_operators_t *pdf_operators,

					      cairo_matrix_t 	    *cairo_to_pdf);

cairo_private void

_cairo_pdf_operators_enable_actual_text (cairo_pdf_operators_t *pdf_operators,

					 cairo_bool_t 	  	enable);

cairo_private cairo_status_t

_cairo_pdf_operators_flush (cairo_pdf_operators_t	 *pdf_operators);

cairo_private void

_cairo_pdf_operators_reset (cairo_pdf_operators_t	 *pdf_operators);

cairo_private cairo_int_status_t

_cairo_pdf_operators_clip (cairo_pdf_operators_t	*pdf_operators,

			   const cairo_path_fixed_t	*path,

			   cairo_fill_rule_t		 fill_rule);

cairo_private cairo_int_status_t

_cairo_pdf_operators_emit_stroke_style (cairo_pdf_operators_t		*pdf_operators,

					const cairo_stroke_style_t	*style,

					double				 scale);

cairo_private cairo_int_status_t

_cairo_pdf_operators_stroke (cairo_pdf_operators_t	*pdf_operators,

			     const cairo_path_fixed_t	*path,

			     const cairo_stroke_style_t	*style,

			     const cairo_matrix_t	*ctm,

			     const cairo_matrix_t	*ctm_inverse);

cairo_private cairo_int_status_t

_cairo_pdf_operators_fill (cairo_pdf_operators_t	*pdf_operators,

			   const cairo_path_fixed_t	*path,

			   cairo_fill_rule_t		fill_rule);

cairo_private cairo_int_status_t

_cairo_pdf_operators_fill_stroke (cairo_pdf_operators_t		*pdf_operators,

				  const cairo_path_fixed_t	*path,

				  cairo_fill_rule_t		 fill_rule,

				  const cairo_stroke_style_t	*style,

				  const cairo_matrix_t		*ctm,

				  const cairo_matrix_t		*ctm_inverse);

cairo_private cairo_int_status_t

_cairo_pdf_operators_show_text_glyphs (cairo_pdf_operators_t	  *pdf_operators,

				       const char                 *utf8,

				       int                         utf8_len,

				       cairo_glyph_t              *glyphs,

				       int                         num_glyphs,

				       const cairo_text_cluster_t *clusters,

				       int                         num_clusters,

				       cairo_text_cluster_flags_t  cluster_flags,

				       cairo_scaled_font_t	  *scaled_font);

#endif /* CAIRO_PDF_OPERATORS_H */