/*

 * Copyright © 2011  Google, Inc.

 *

 *  This is part of HarfBuzz, a text shaping library.

 *

 * Permission is hereby granted, without written agreement and without

 * license or royalty fees, to use, copy, modify, and distribute this

 * software and its documentation for any purpose, provided that the

 * above copyright notice and the following two paragraphs appear in

 * all copies of this software.

 *

 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR

 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES

 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN

 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH

 * DAMAGE.

 *

 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,

 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

 * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS

 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO

 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

 *

 * Google Author(s): Behdad Esfahbod

 */

#include "options.hh"

#include "helper-cairo.hh"

#ifndef VIEW_CAIRO_HH

#define VIEW_CAIRO_HH

struct view_cairo_t

{

  view_cairo_t (option_parser_t *parser)

	       : output_options (parser, helper_cairo_supported_formats),

		 view_options (parser),

		 direction (HB_DIRECTION_INVALID),

		 lines (0), scale_bits (0) {}

  ~view_cairo_t (void) {

    if (debug)

      cairo_debug_reset_static_data ();

  }

  void init (hb_buffer_t *buffer, const font_options_t *font_opts)

  {

    lines = g_array_new (false, false, sizeof (helper_cairo_line_t));

    scale_bits = -font_opts->subpixel_bits;

  }

  void new_line (void)

  {

  }

  void consume_text (hb_buffer_t  *buffer,

		     const char   *text,

		     unsigned int  text_len,

		     hb_bool_t     utf8_clusters)

  {

  }

  void shape_failed (hb_buffer_t  *buffer,

		     const char   *text,

		     unsigned int  text_len,

		     hb_bool_t     utf8_clusters)

  {

    fail (false, "all shapers failed");

  }

  void consume_glyphs (hb_buffer_t  *buffer,

		       const char   *text,

		       unsigned int  text_len,

		       hb_bool_t     utf8_clusters)

  {

    direction = hb_buffer_get_direction (buffer);

    helper_cairo_line_t l;

    helper_cairo_line_from_buffer (&l, buffer, text, text_len, scale_bits, utf8_clusters);

    g_array_append_val (lines, l);

  }

  void finish (hb_buffer_t *buffer, const font_options_t *font_opts)

  {

    render (font_opts);

    for (unsigned int i = 0; i < lines->len; i++) {

      helper_cairo_line_t &line = g_array_index (lines, helper_cairo_line_t, i);

      line.finish ();

    }

#if GLIB_CHECK_VERSION (2, 22, 0)

    g_array_unref (lines);

#else

    g_array_free (lines, TRUE);

#endif

  }

  protected:

  output_options_t output_options;

  view_options_t view_options;

  void render (const font_options_t *font_opts);

  hb_direction_t direction; // Remove this, make segment_properties accessible

  GArray *lines;

  int scale_bits;

};

#endif