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hb-ot-color.h
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/* * 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 */ #ifndef HB_OT_H_IN #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. * * 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: * * Pairs of glyph and color index. * * 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. */); /* * 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 */