hb-ot-color.cc

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/*
 * Copyright © 2016  Google, Inc.
 * Copyright © 2018  Ebrahim Byagowi
 *
 *  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): Sascha Brawer, Behdad Esfahbod
 */
 
#include "hb.hh"
 
#ifndef HB_NO_COLOR
 
#include "hb-ot.h"
 
#include "hb-ot-color-cbdt-table.hh"
#include "hb-ot-color-colr-table.hh"
#include "hb-ot-color-cpal-table.hh"
#include "hb-ot-color-sbix-table.hh"
#include "hb-ot-color-svg-table.hh"
 
 
/*
 * CPAL
 */
 
 
hb_bool_t
hb_ot_color_has_palettes (hb_face_t *face)
{
  return face->table.CPAL->has_data ();
}
 
unsigned int
hb_ot_color_palette_get_count (hb_face_t *face)
{
  return face->table.CPAL->get_palette_count ();
}
 
hb_ot_name_id_t
hb_ot_color_palette_get_name_id (hb_face_t *face,
                 unsigned int palette_index)
{
  return face->table.CPAL->get_palette_name_id (palette_index);
}
 
hb_ot_name_id_t
hb_ot_color_palette_color_get_name_id (hb_face_t *face,
                       unsigned int color_index)
{
  return face->table.CPAL->get_color_name_id (color_index);
}
 
hb_ot_color_palette_flags_t
hb_ot_color_palette_get_flags (hb_face_t *face,
                   unsigned int palette_index)
{
  return face->table.CPAL->get_palette_flags (palette_index);
}
 
unsigned int
hb_ot_color_palette_get_colors (hb_face_t     *face,
                unsigned int   palette_index,
                unsigned int   start_offset,
                unsigned int  *colors_count  /* IN/OUT.  May be NULL. */,
                hb_color_t    *colors        /* OUT.     May be NULL. */)
{
  return face->table.CPAL->get_palette_colors (palette_index, start_offset, colors_count, colors);
}
 
 
/*
 * COLR
 */
 
hb_bool_t
hb_ot_color_has_layers (hb_face_t *face)
{
  return face->table.COLR->has_data ();
}
 
unsigned int
hb_ot_color_glyph_get_layers (hb_face_t           *face,
                  hb_codepoint_t       glyph,
                  unsigned int         start_offset,
                  unsigned int        *layer_count, /* IN/OUT.  May be NULL. */
                  hb_ot_color_layer_t *layers /* OUT.     May be NULL. */)
{
  return face->table.COLR->get_glyph_layers (glyph, start_offset, layer_count, layers);
}
 
 
/*
 * SVG
 */
 
hb_bool_t
hb_ot_color_has_svg (hb_face_t *face)
{
  return face->table.SVG->has_data ();
}
 
hb_blob_t *
hb_ot_color_glyph_reference_svg (hb_face_t *face, hb_codepoint_t glyph)
{
  return face->table.SVG->reference_blob_for_glyph (glyph);
}
 
 
/*
 * PNG: CBDT or sbix
 */
 
hb_bool_t
hb_ot_color_has_png (hb_face_t *face)
{
  return face->table.CBDT->has_data () || face->table.sbix->has_data ();
}
 
hb_blob_t *
hb_ot_color_glyph_reference_png (hb_font_t *font, hb_codepoint_t  glyph)
{
  hb_blob_t *blob = hb_blob_get_empty ();
 
  if (font->face->table.sbix->has_data ())
    blob = font->face->table.sbix->reference_png (font, glyph, nullptr, nullptr, nullptr);
 
  if (!blob->length && font->face->table.CBDT->has_data ())
    blob = font->face->table.CBDT->reference_png (font, glyph);
 
  return blob;
}
 
 
#endif