kc3-lang/harfbuzz/src/hb-ot-color.h

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• Hash : b8f2281c
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  Date : 2022-12-26T07:59:01
  

  Add hb_ot_color_glyph_has_paint
  

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• src/hb-ot-color.h

• /*
   * Copyright © 2016  Google, Inc.
   * Copyright © 2018  Khaled Hosny
   * 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
   */
  
  #if !defined(HB_OT_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR)
  #error "Include <hb-ot.h> instead."
  #endif
  
  #ifndef HB_OT_COLOR_H
  #define HB_OT_COLOR_H
  
  #include "hb.h"
  #include "hb-ot-name.h"
  
  HB_BEGIN_DECLS
  
  
  /*
   * Color palettes.
   */
  
  HB_EXTERN hb_bool_t
  hb_ot_color_has_palettes (hb_face_t *face);
  
  HB_EXTERN unsigned int
  hb_ot_color_palette_get_count (hb_face_t *face);
  
  HB_EXTERN hb_ot_name_id_t
  hb_ot_color_palette_get_name_id (hb_face_t *face,
  				 unsigned int palette_index);
  
  HB_EXTERN hb_ot_name_id_t
  hb_ot_color_palette_color_get_name_id (hb_face_t *face,
  				       unsigned int color_index);
  
  /**
   * hb_ot_color_palette_flags_t:
   * @HB_OT_COLOR_PALETTE_FLAG_DEFAULT: Default indicating that there is nothing special
   *   to note about a color palette.
   * @HB_OT_COLOR_PALETTE_FLAG_USABLE_WITH_LIGHT_BACKGROUND: Flag indicating that the color
   *   palette is appropriate to use when displaying the font on a light background such as white.
   * @HB_OT_COLOR_PALETTE_FLAG_USABLE_WITH_DARK_BACKGROUND: Flag indicating that the color
   *   palette is appropriate to use when displaying the font on a dark background such as black.
   *
   * Flags that describe the properties of color palette.
   *
   * Since: 2.1.0
   */
  typedef enum { /*< flags >*/
    HB_OT_COLOR_PALETTE_FLAG_DEFAULT			= 0x00000000u,
    HB_OT_COLOR_PALETTE_FLAG_USABLE_WITH_LIGHT_BACKGROUND	= 0x00000001u,
    HB_OT_COLOR_PALETTE_FLAG_USABLE_WITH_DARK_BACKGROUND	= 0x00000002u
  } hb_ot_color_palette_flags_t;
  
  HB_EXTERN hb_ot_color_palette_flags_t
  hb_ot_color_palette_get_flags (hb_face_t *face,
  			       unsigned int palette_index);
  
  HB_EXTERN unsigned int
  hb_ot_color_palette_get_colors (hb_face_t    *face,
  				unsigned int  palette_index,
  				unsigned int  start_offset,
  				unsigned int *color_count,  /* IN/OUT.  May be NULL. */
  				hb_color_t   *colors        /* OUT.     May be NULL. */);
  
  
  /*
   * Color layers.
   */
  
  HB_EXTERN hb_bool_t
  hb_ot_color_has_layers (hb_face_t *face);
  
  /**
   * hb_ot_color_layer_t:
   * @glyph: the glyph ID of the layer
   * @color_index: the palette color index of the layer
   *
   * Pairs of glyph and color index.
   *
   * A color index of 0xFFFF does not refer to a palette
   * color, but indicates that the foreground color should
   * be used.
   *
   * Since: 2.1.0
   **/
  typedef struct hb_ot_color_layer_t {
    hb_codepoint_t glyph;
    unsigned int   color_index;
  } hb_ot_color_layer_t;
  
  HB_EXTERN 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. */);
  
  /* COLRv1 */
  
  HB_EXTERN hb_bool_t
  hb_ot_color_has_paint (hb_face_t *face);
  
  HB_EXTERN hb_bool_t
  hb_ot_color_glyph_has_paint (hb_face_t      *face,
                               hb_codepoint_t  glyph);
  
  /*
   * SVG
   */
  
  HB_EXTERN hb_bool_t
  hb_ot_color_has_svg (hb_face_t *face);
  
  HB_EXTERN hb_blob_t *
  hb_ot_color_glyph_reference_svg (hb_face_t *face, hb_codepoint_t glyph);
  
  /*
   * PNG: CBDT or sbix
   */
  
  HB_EXTERN hb_bool_t
  hb_ot_color_has_png (hb_face_t *face);
  
  HB_EXTERN hb_blob_t *
  hb_ot_color_glyph_reference_png (hb_font_t *font, hb_codepoint_t glyph);
  
  
  HB_END_DECLS
  
  #endif /* HB_OT_COLOR_H */
  

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