| /* |
| * 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 |
| */ |
| |
| #include "hb-open-type.hh" |
| #include "hb-ot-color-colr-table.hh" |
| #include "hb-ot-color-cpal-table.hh" |
| #include "hb-ot.h" |
| |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "hb-ot-layout.hh" |
| #include "hb-shaper.hh" |
| |
| #if 0 |
| HB_MARK_AS_FLAG_T (hb_ot_color_palette_flags_t) |
| //HB_SHAPER_DATA_ENSURE_DECLARE(ot, face) Hmm? |
| |
| |
| static inline const OT::COLR& |
| _get_colr (hb_face_t *face) |
| { |
| if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::COLR); |
| return *(hb_ot_face_data (face)->colr.get ()); |
| } |
| |
| static inline const OT::CPAL& |
| _get_cpal (hb_face_t *face) |
| { |
| if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::CPAL); |
| return *(hb_ot_face_data (face)->cpal.get ()); |
| } |
| |
| |
| /** |
| * hb_ot_color_get_palette_count: |
| * @face: a font face. |
| * |
| * Returns: the number of color palettes in @face, or zero if @face has |
| * no colors. |
| * |
| * Since: REPLACEME |
| */ |
| unsigned int |
| hb_ot_color_get_palette_count (hb_face_t *face) |
| { |
| const OT::CPAL& cpal = _get_cpal (face); |
| return cpal.get_palette_count (); |
| } |
| |
| |
| /** |
| * hb_ot_color_get_palette_name_id: |
| * @face: a font face. |
| * @palette: the index of the color palette whose name is being requested. |
| * |
| * Retrieves the name id of a color palette. For example, a color font can |
| * have themed palettes like "Spring", "Summer", "Fall", and "Winter". |
| * |
| * Returns: an identifier within @face's `name` table. |
| * If the requested palette has no name, or if @face has no colors, |
| * or if @palette is not between 0 and hb_ot_color_get_palette_count(), |
| * the result is 0xFFFF. The implementation does not check whether |
| * the returned palette name id is actually in @face's `name` table. |
| * |
| * Since: REPLACEME |
| */ |
| unsigned int |
| hb_ot_color_get_palette_name_id (hb_face_t *face, unsigned int palette) |
| { |
| const OT::CPAL& cpal = _get_cpal (face); |
| return cpal.get_palette_name_id (palette); |
| } |
| |
| |
| /** |
| * hb_ot_color_get_palette_flags: |
| * @face: a font face |
| * @palette: the index of the color palette whose flags are being requested |
| * |
| * Returns: the flags for the requested color palette. If @face has no colors, |
| * or if @palette is not between 0 and hb_ot_color_get_palette_count(), |
| * the result is #HB_OT_COLOR_PALETTE_FLAG_DEFAULT. |
| * |
| * Since: REPLACEME |
| */ |
| hb_ot_color_palette_flags_t |
| hb_ot_color_get_palette_flags (hb_face_t *face, unsigned int palette) |
| { |
| const OT::CPAL& cpal = _get_cpal(face); |
| return cpal.get_palette_flags (palette); |
| } |
| |
| |
| /** |
| * hb_ot_color_get_palette_colors: |
| * @face: a font face. |
| * @palette: the index of the color palette whose colors |
| * are being requested. |
| * @start_offset: the index of the first color being requested. |
| * @color_count: (inout) (optional): on input, how many colors |
| * can be maximally stored into the @colors array; |
| * on output, how many colors were actually stored. |
| * @colors: (array length=color_count) (optional): |
| * an array of #hb_ot_color_t records. After calling |
| * this function, @colors will be filled with |
| * the palette colors. If @colors is NULL, the function |
| * will just return the number of total colors |
| * without storing any actual colors; this can be used |
| * for allocating a buffer of suitable size before calling |
| * hb_ot_color_get_palette_colors() a second time. |
| * |
| * Retrieves the colors in a color palette. |
| * |
| * Returns: the total number of colors in the palette. All palettes in |
| * a font have the same number of colors. If @face has no colors, or if |
| * @palette is not between 0 and hb_ot_color_get_palette_count(), |
| * the result is zero. |
| * |
| * Since: REPLACEME |
| */ |
| unsigned int |
| hb_ot_color_get_palette_colors (hb_face_t *face, |
| unsigned int palette, /* default=0 */ |
| unsigned int start_offset, |
| unsigned int *color_count /* IN/OUT */, |
| hb_ot_color_t *colors /* OUT */) |
| { |
| const OT::CPAL& cpal = _get_cpal(face); |
| if (unlikely (palette >= cpal.numPalettes)) |
| { |
| if (color_count) *color_count = 0; |
| return 0; |
| } |
| |
| const OT::ColorRecord* crec = &cpal.offsetFirstColorRecord (&cpal); |
| crec += cpal.colorRecordIndices[palette]; |
| |
| unsigned int num_results = 0; |
| if (likely (color_count && colors)) |
| { |
| for (unsigned int i = start_offset; |
| i < cpal.numPaletteEntries && num_results < *color_count; ++i) |
| { |
| hb_ot_color_t* result = &colors[num_results]; |
| result->red = crec[i].red; |
| result->green = crec[i].green; |
| result->blue = crec[i].blue; |
| result->alpha = crec[i].alpha; |
| ++num_results; |
| } |
| } |
| |
| if (likely (color_count)) *color_count = num_results; |
| return cpal.numPaletteEntries; |
| } |
| #endif |