2039 lines
43 KiB
C++
2039 lines
43 KiB
C++
/*
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* Copyright © 2009 Red Hat, Inc.
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* Copyright © 2012 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Behdad Esfahbod
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* Google Author(s): Behdad Esfahbod
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*/
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#include "hb.hh"
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#include "hb-font.hh"
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#include "hb-machinery.hh"
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#include "hb-ot.h"
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/**
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* SECTION:hb-font
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* @title: hb-font
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* @short_description: Font objects
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* @include: hb.h
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*
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* Font objects represent a font face at a certain size and other
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* parameters (pixels per EM, points per EM, variation settings.)
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* Fonts are created from font faces, and are used as input to
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* hb_shape() among other things.
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**/
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/*
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* hb_font_funcs_t
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*/
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static hb_bool_t
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hb_font_get_font_h_extents_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_font_extents_t *extents,
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void *user_data HB_UNUSED)
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{
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memset (extents, 0, sizeof (*extents));
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return false;
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}
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static hb_bool_t
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hb_font_get_font_h_extents_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_font_extents_t *extents,
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void *user_data HB_UNUSED)
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{
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hb_bool_t ret = font->parent->get_font_h_extents (extents);
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if (ret) {
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extents->ascender = font->parent_scale_y_distance (extents->ascender);
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extents->descender = font->parent_scale_y_distance (extents->descender);
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extents->line_gap = font->parent_scale_y_distance (extents->line_gap);
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}
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return ret;
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}
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static hb_bool_t
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hb_font_get_font_v_extents_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_font_extents_t *extents,
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void *user_data HB_UNUSED)
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{
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memset (extents, 0, sizeof (*extents));
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return false;
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}
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static hb_bool_t
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hb_font_get_font_v_extents_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_font_extents_t *extents,
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void *user_data HB_UNUSED)
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{
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hb_bool_t ret = font->parent->get_font_v_extents (extents);
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if (ret) {
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extents->ascender = font->parent_scale_x_distance (extents->ascender);
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extents->descender = font->parent_scale_x_distance (extents->descender);
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extents->line_gap = font->parent_scale_x_distance (extents->line_gap);
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}
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return ret;
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}
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static hb_bool_t
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hb_font_get_nominal_glyph_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_codepoint_t unicode HB_UNUSED,
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hb_codepoint_t *glyph,
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void *user_data HB_UNUSED)
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{
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*glyph = 0;
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return false;
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}
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static hb_bool_t
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hb_font_get_nominal_glyph_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t unicode,
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hb_codepoint_t *glyph,
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void *user_data HB_UNUSED)
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{
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if (font->has_nominal_glyphs_func_set ())
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{
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return font->get_nominal_glyphs (1, &unicode, 0, glyph, 0);
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}
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return font->parent->get_nominal_glyph (unicode, glyph);
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}
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#define hb_font_get_nominal_glyphs_nil hb_font_get_nominal_glyphs_default
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static unsigned int
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hb_font_get_nominal_glyphs_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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unsigned int count,
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const hb_codepoint_t *first_unicode,
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unsigned int unicode_stride,
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hb_codepoint_t *first_glyph,
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unsigned int glyph_stride,
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void *user_data HB_UNUSED)
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{
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if (font->has_nominal_glyph_func_set ())
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{
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for (unsigned int i = 0; i < count; i++)
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{
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if (!font->get_nominal_glyph (*first_unicode, first_glyph))
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return i;
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first_unicode = &StructAtOffsetUnaligned<hb_codepoint_t> (first_unicode, unicode_stride);
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first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride);
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}
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return count;
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}
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return font->parent->get_nominal_glyphs (count,
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first_unicode, unicode_stride,
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first_glyph, glyph_stride);
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}
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static hb_bool_t
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hb_font_get_variation_glyph_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_codepoint_t unicode HB_UNUSED,
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hb_codepoint_t variation_selector HB_UNUSED,
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hb_codepoint_t *glyph,
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void *user_data HB_UNUSED)
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{
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*glyph = 0;
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return false;
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}
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static hb_bool_t
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hb_font_get_variation_glyph_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t unicode,
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hb_codepoint_t variation_selector,
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hb_codepoint_t *glyph,
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void *user_data HB_UNUSED)
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{
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return font->parent->get_variation_glyph (unicode, variation_selector, glyph);
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}
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static hb_position_t
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hb_font_get_glyph_h_advance_nil (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph HB_UNUSED,
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void *user_data HB_UNUSED)
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{
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return font->x_scale;
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}
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static hb_position_t
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hb_font_get_glyph_h_advance_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph,
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void *user_data HB_UNUSED)
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{
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if (font->has_glyph_h_advances_func_set ())
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{
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hb_position_t ret;
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font->get_glyph_h_advances (1, &glyph, 0, &ret, 0);
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return ret;
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}
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return font->parent_scale_x_distance (font->parent->get_glyph_h_advance (glyph));
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}
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static hb_position_t
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hb_font_get_glyph_v_advance_nil (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph HB_UNUSED,
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void *user_data HB_UNUSED)
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{
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/* TODO use font_extents.ascender+descender */
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return font->y_scale;
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}
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static hb_position_t
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hb_font_get_glyph_v_advance_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph,
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void *user_data HB_UNUSED)
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{
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if (font->has_glyph_v_advances_func_set ())
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{
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hb_position_t ret;
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font->get_glyph_v_advances (1, &glyph, 0, &ret, 0);
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return ret;
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}
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return font->parent_scale_y_distance (font->parent->get_glyph_v_advance (glyph));
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}
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#define hb_font_get_glyph_h_advances_nil hb_font_get_glyph_h_advances_default
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static void
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hb_font_get_glyph_h_advances_default (hb_font_t* font,
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void* font_data HB_UNUSED,
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unsigned int count,
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const hb_codepoint_t *first_glyph,
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unsigned int glyph_stride,
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hb_position_t *first_advance,
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unsigned int advance_stride,
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void *user_data HB_UNUSED)
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{
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if (font->has_glyph_h_advance_func_set ())
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{
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for (unsigned int i = 0; i < count; i++)
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{
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*first_advance = font->get_glyph_h_advance (*first_glyph);
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first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride);
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first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
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}
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return;
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}
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font->parent->get_glyph_h_advances (count,
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first_glyph, glyph_stride,
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first_advance, advance_stride);
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for (unsigned int i = 0; i < count; i++)
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{
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*first_advance = font->parent_scale_x_distance (*first_advance);
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first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
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}
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}
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#define hb_font_get_glyph_v_advances_nil hb_font_get_glyph_v_advances_default
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static void
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hb_font_get_glyph_v_advances_default (hb_font_t* font,
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void* font_data HB_UNUSED,
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unsigned int count,
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const hb_codepoint_t *first_glyph,
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unsigned int glyph_stride,
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hb_position_t *first_advance,
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unsigned int advance_stride,
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void *user_data HB_UNUSED)
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{
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if (font->has_glyph_v_advance_func_set ())
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{
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for (unsigned int i = 0; i < count; i++)
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{
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*first_advance = font->get_glyph_v_advance (*first_glyph);
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first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride);
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first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
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}
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return;
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}
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font->parent->get_glyph_v_advances (count,
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first_glyph, glyph_stride,
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first_advance, advance_stride);
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for (unsigned int i = 0; i < count; i++)
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{
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*first_advance = font->parent_scale_y_distance (*first_advance);
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first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
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}
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}
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static hb_bool_t
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hb_font_get_glyph_h_origin_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph HB_UNUSED,
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hb_position_t *x,
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hb_position_t *y,
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void *user_data HB_UNUSED)
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{
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*x = *y = 0;
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return true;
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}
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static hb_bool_t
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hb_font_get_glyph_h_origin_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph,
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hb_position_t *x,
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hb_position_t *y,
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void *user_data HB_UNUSED)
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{
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hb_bool_t ret = font->parent->get_glyph_h_origin (glyph, x, y);
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if (ret)
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font->parent_scale_position (x, y);
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return ret;
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}
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static hb_bool_t
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hb_font_get_glyph_v_origin_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph HB_UNUSED,
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hb_position_t *x,
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hb_position_t *y,
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void *user_data HB_UNUSED)
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{
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*x = *y = 0;
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return false;
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}
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static hb_bool_t
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hb_font_get_glyph_v_origin_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph,
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hb_position_t *x,
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hb_position_t *y,
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void *user_data HB_UNUSED)
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{
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hb_bool_t ret = font->parent->get_glyph_v_origin (glyph, x, y);
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if (ret)
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font->parent_scale_position (x, y);
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return ret;
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}
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static hb_position_t
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hb_font_get_glyph_h_kerning_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_codepoint_t left_glyph HB_UNUSED,
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hb_codepoint_t right_glyph HB_UNUSED,
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void *user_data HB_UNUSED)
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{
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return 0;
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}
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static hb_position_t
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hb_font_get_glyph_h_kerning_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t left_glyph,
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hb_codepoint_t right_glyph,
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void *user_data HB_UNUSED)
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{
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return font->parent_scale_x_distance (font->parent->get_glyph_h_kerning (left_glyph, right_glyph));
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}
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static hb_position_t
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hb_font_get_glyph_v_kerning_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_codepoint_t top_glyph HB_UNUSED,
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hb_codepoint_t bottom_glyph HB_UNUSED,
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void *user_data HB_UNUSED)
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{
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return 0;
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}
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static hb_position_t
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hb_font_get_glyph_v_kerning_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t top_glyph,
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hb_codepoint_t bottom_glyph,
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void *user_data HB_UNUSED)
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{
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return font->parent_scale_y_distance (font->parent->get_glyph_v_kerning (top_glyph, bottom_glyph));
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}
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static hb_bool_t
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hb_font_get_glyph_extents_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph HB_UNUSED,
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hb_glyph_extents_t *extents,
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void *user_data HB_UNUSED)
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{
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memset (extents, 0, sizeof (*extents));
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return false;
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}
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static hb_bool_t
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hb_font_get_glyph_extents_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph,
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hb_glyph_extents_t *extents,
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void *user_data HB_UNUSED)
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{
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hb_bool_t ret = font->parent->get_glyph_extents (glyph, extents);
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if (ret) {
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font->parent_scale_position (&extents->x_bearing, &extents->y_bearing);
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font->parent_scale_distance (&extents->width, &extents->height);
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}
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return ret;
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}
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static hb_bool_t
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hb_font_get_glyph_contour_point_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph HB_UNUSED,
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unsigned int point_index HB_UNUSED,
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hb_position_t *x,
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hb_position_t *y,
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void *user_data HB_UNUSED)
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{
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*x = *y = 0;
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return false;
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}
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static hb_bool_t
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hb_font_get_glyph_contour_point_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph,
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unsigned int point_index,
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hb_position_t *x,
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hb_position_t *y,
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void *user_data HB_UNUSED)
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{
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hb_bool_t ret = font->parent->get_glyph_contour_point (glyph, point_index, x, y);
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if (ret)
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font->parent_scale_position (x, y);
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return ret;
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}
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static hb_bool_t
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hb_font_get_glyph_name_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph HB_UNUSED,
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char *name, unsigned int size,
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void *user_data HB_UNUSED)
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{
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if (size) *name = '\0';
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return false;
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}
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static hb_bool_t
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hb_font_get_glyph_name_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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hb_codepoint_t glyph,
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char *name, unsigned int size,
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void *user_data HB_UNUSED)
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{
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return font->parent->get_glyph_name (glyph, name, size);
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}
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static hb_bool_t
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hb_font_get_glyph_from_name_nil (hb_font_t *font HB_UNUSED,
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void *font_data HB_UNUSED,
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const char *name HB_UNUSED,
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int len HB_UNUSED, /* -1 means nul-terminated */
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hb_codepoint_t *glyph,
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void *user_data HB_UNUSED)
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{
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*glyph = 0;
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return false;
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}
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static hb_bool_t
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hb_font_get_glyph_from_name_default (hb_font_t *font,
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void *font_data HB_UNUSED,
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const char *name, int len, /* -1 means nul-terminated */
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hb_codepoint_t *glyph,
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void *user_data HB_UNUSED)
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{
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return font->parent->get_glyph_from_name (name, len, glyph);
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}
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DEFINE_NULL_INSTANCE (hb_font_funcs_t) =
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{
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HB_OBJECT_HEADER_STATIC,
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{
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#define HB_FONT_FUNC_IMPLEMENT(name) nullptr,
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|
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
|
|
#undef HB_FONT_FUNC_IMPLEMENT
|
|
},
|
|
{
|
|
#define HB_FONT_FUNC_IMPLEMENT(name) nullptr,
|
|
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
|
|
#undef HB_FONT_FUNC_IMPLEMENT
|
|
},
|
|
{
|
|
{
|
|
#define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_nil,
|
|
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
|
|
#undef HB_FONT_FUNC_IMPLEMENT
|
|
}
|
|
}
|
|
};
|
|
|
|
static const hb_font_funcs_t _hb_font_funcs_default = {
|
|
HB_OBJECT_HEADER_STATIC,
|
|
|
|
{
|
|
#define HB_FONT_FUNC_IMPLEMENT(name) nullptr,
|
|
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
|
|
#undef HB_FONT_FUNC_IMPLEMENT
|
|
},
|
|
{
|
|
#define HB_FONT_FUNC_IMPLEMENT(name) nullptr,
|
|
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
|
|
#undef HB_FONT_FUNC_IMPLEMENT
|
|
},
|
|
{
|
|
{
|
|
#define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_default,
|
|
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
|
|
#undef HB_FONT_FUNC_IMPLEMENT
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* hb_font_funcs_create: (Xconstructor)
|
|
*
|
|
*
|
|
*
|
|
* Return value: (transfer full):
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_font_funcs_t *
|
|
hb_font_funcs_create ()
|
|
{
|
|
hb_font_funcs_t *ffuncs;
|
|
|
|
if (!(ffuncs = hb_object_create<hb_font_funcs_t> ()))
|
|
return hb_font_funcs_get_empty ();
|
|
|
|
ffuncs->get = _hb_font_funcs_default.get;
|
|
|
|
return ffuncs;
|
|
}
|
|
|
|
/**
|
|
* hb_font_funcs_get_empty:
|
|
*
|
|
*
|
|
*
|
|
* Return value: (transfer full):
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_font_funcs_t *
|
|
hb_font_funcs_get_empty ()
|
|
{
|
|
return const_cast<hb_font_funcs_t *> (&_hb_font_funcs_default);
|
|
}
|
|
|
|
/**
|
|
* hb_font_funcs_reference: (skip)
|
|
* @ffuncs: font functions.
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_font_funcs_t *
|
|
hb_font_funcs_reference (hb_font_funcs_t *ffuncs)
|
|
{
|
|
return hb_object_reference (ffuncs);
|
|
}
|
|
|
|
/**
|
|
* hb_font_funcs_destroy: (skip)
|
|
* @ffuncs: font functions.
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_funcs_destroy (hb_font_funcs_t *ffuncs)
|
|
{
|
|
if (!hb_object_destroy (ffuncs)) return;
|
|
|
|
#define HB_FONT_FUNC_IMPLEMENT(name) if (ffuncs->destroy.name) \
|
|
ffuncs->destroy.name (ffuncs->user_data.name);
|
|
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
|
|
#undef HB_FONT_FUNC_IMPLEMENT
|
|
|
|
free (ffuncs);
|
|
}
|
|
|
|
/**
|
|
* hb_font_funcs_set_user_data: (skip)
|
|
* @ffuncs: font functions.
|
|
* @key:
|
|
* @data:
|
|
* @destroy:
|
|
* @replace:
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs,
|
|
hb_user_data_key_t *key,
|
|
void * data,
|
|
hb_destroy_func_t destroy,
|
|
hb_bool_t replace)
|
|
{
|
|
return hb_object_set_user_data (ffuncs, key, data, destroy, replace);
|
|
}
|
|
|
|
/**
|
|
* hb_font_funcs_get_user_data: (skip)
|
|
* @ffuncs: font functions.
|
|
* @key:
|
|
*
|
|
*
|
|
*
|
|
* Return value: (transfer none):
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void *
|
|
hb_font_funcs_get_user_data (hb_font_funcs_t *ffuncs,
|
|
hb_user_data_key_t *key)
|
|
{
|
|
return hb_object_get_user_data (ffuncs, key);
|
|
}
|
|
|
|
|
|
/**
|
|
* hb_font_funcs_make_immutable:
|
|
* @ffuncs: font functions.
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs)
|
|
{
|
|
if (hb_object_is_immutable (ffuncs))
|
|
return;
|
|
|
|
hb_object_make_immutable (ffuncs);
|
|
}
|
|
|
|
/**
|
|
* hb_font_funcs_is_immutable:
|
|
* @ffuncs: font functions.
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs)
|
|
{
|
|
return hb_object_is_immutable (ffuncs);
|
|
}
|
|
|
|
|
|
#define HB_FONT_FUNC_IMPLEMENT(name) \
|
|
\
|
|
void \
|
|
hb_font_funcs_set_##name##_func (hb_font_funcs_t *ffuncs, \
|
|
hb_font_get_##name##_func_t func, \
|
|
void *user_data, \
|
|
hb_destroy_func_t destroy) \
|
|
{ \
|
|
if (hb_object_is_immutable (ffuncs)) { \
|
|
if (destroy) \
|
|
destroy (user_data); \
|
|
return; \
|
|
} \
|
|
\
|
|
if (ffuncs->destroy.name) \
|
|
ffuncs->destroy.name (ffuncs->user_data.name); \
|
|
\
|
|
if (func) { \
|
|
ffuncs->get.f.name = func; \
|
|
ffuncs->user_data.name = user_data; \
|
|
ffuncs->destroy.name = destroy; \
|
|
} else { \
|
|
ffuncs->get.f.name = hb_font_get_##name##_default; \
|
|
ffuncs->user_data.name = nullptr; \
|
|
ffuncs->destroy.name = nullptr; \
|
|
} \
|
|
}
|
|
|
|
HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
|
|
#undef HB_FONT_FUNC_IMPLEMENT
|
|
|
|
bool
|
|
hb_font_t::has_func_set (unsigned int i)
|
|
{
|
|
return this->klass->get.array[i] != _hb_font_funcs_default.get.array[i];
|
|
}
|
|
|
|
bool
|
|
hb_font_t::has_func (unsigned int i)
|
|
{
|
|
return has_func_set (i) ||
|
|
(parent && parent != &_hb_Null_hb_font_t && parent->has_func (i));
|
|
}
|
|
|
|
/* Public getters */
|
|
|
|
/**
|
|
* hb_font_get_h_extents:
|
|
* @font: a font.
|
|
* @extents: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 1.1.3
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_h_extents (hb_font_t *font,
|
|
hb_font_extents_t *extents)
|
|
{
|
|
return font->get_font_h_extents (extents);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_v_extents:
|
|
* @font: a font.
|
|
* @extents: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 1.1.3
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_v_extents (hb_font_t *font,
|
|
hb_font_extents_t *extents)
|
|
{
|
|
return font->get_font_v_extents (extents);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph:
|
|
* @font: a font.
|
|
* @unicode:
|
|
* @variation_selector:
|
|
* @glyph: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_glyph (hb_font_t *font,
|
|
hb_codepoint_t unicode, hb_codepoint_t variation_selector,
|
|
hb_codepoint_t *glyph)
|
|
{
|
|
if (unlikely (variation_selector))
|
|
return font->get_variation_glyph (unicode, variation_selector, glyph);
|
|
return font->get_nominal_glyph (unicode, glyph);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_nominal_glyph:
|
|
* @font: a font.
|
|
* @unicode:
|
|
* @glyph: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 1.2.3
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_nominal_glyph (hb_font_t *font,
|
|
hb_codepoint_t unicode,
|
|
hb_codepoint_t *glyph)
|
|
{
|
|
return font->get_nominal_glyph (unicode, glyph);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_variation_glyph:
|
|
* @font: a font.
|
|
* @unicode:
|
|
* @variation_selector:
|
|
* @glyph: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 1.2.3
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_variation_glyph (hb_font_t *font,
|
|
hb_codepoint_t unicode, hb_codepoint_t variation_selector,
|
|
hb_codepoint_t *glyph)
|
|
{
|
|
return font->get_variation_glyph (unicode, variation_selector, glyph);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_h_advance:
|
|
* @font: a font.
|
|
* @glyph:
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_position_t
|
|
hb_font_get_glyph_h_advance (hb_font_t *font,
|
|
hb_codepoint_t glyph)
|
|
{
|
|
return font->get_glyph_h_advance (glyph);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_v_advance:
|
|
* @font: a font.
|
|
* @glyph:
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_position_t
|
|
hb_font_get_glyph_v_advance (hb_font_t *font,
|
|
hb_codepoint_t glyph)
|
|
{
|
|
return font->get_glyph_v_advance (glyph);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_h_advances:
|
|
* @font: a font.
|
|
*
|
|
*
|
|
*
|
|
* Since: 1.8.6
|
|
**/
|
|
void
|
|
hb_font_get_glyph_h_advances (hb_font_t* font,
|
|
unsigned int count,
|
|
const hb_codepoint_t *first_glyph,
|
|
unsigned glyph_stride,
|
|
hb_position_t *first_advance,
|
|
unsigned advance_stride)
|
|
{
|
|
font->get_glyph_h_advances (count, first_glyph, glyph_stride, first_advance, advance_stride);
|
|
}
|
|
/**
|
|
* hb_font_get_glyph_v_advances:
|
|
* @font: a font.
|
|
*
|
|
*
|
|
*
|
|
* Since: 1.8.6
|
|
**/
|
|
void
|
|
hb_font_get_glyph_v_advances (hb_font_t* font,
|
|
unsigned int count,
|
|
const hb_codepoint_t *first_glyph,
|
|
unsigned glyph_stride,
|
|
hb_position_t *first_advance,
|
|
unsigned advance_stride)
|
|
{
|
|
font->get_glyph_v_advances (count, first_glyph, glyph_stride, first_advance, advance_stride);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_h_origin:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @x: (out):
|
|
* @y: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_glyph_h_origin (hb_font_t *font,
|
|
hb_codepoint_t glyph,
|
|
hb_position_t *x, hb_position_t *y)
|
|
{
|
|
return font->get_glyph_h_origin (glyph, x, y);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_v_origin:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @x: (out):
|
|
* @y: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_glyph_v_origin (hb_font_t *font,
|
|
hb_codepoint_t glyph,
|
|
hb_position_t *x, hb_position_t *y)
|
|
{
|
|
return font->get_glyph_v_origin (glyph, x, y);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_h_kerning:
|
|
* @font: a font.
|
|
* @left_glyph:
|
|
* @right_glyph:
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
* Deprecated: 2.0.0
|
|
**/
|
|
hb_position_t
|
|
hb_font_get_glyph_h_kerning (hb_font_t *font,
|
|
hb_codepoint_t left_glyph, hb_codepoint_t right_glyph)
|
|
{
|
|
return font->get_glyph_h_kerning (left_glyph, right_glyph);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_v_kerning:
|
|
* @font: a font.
|
|
* @top_glyph:
|
|
* @bottom_glyph:
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
* Deprecated: 2.0.0
|
|
**/
|
|
hb_position_t
|
|
hb_font_get_glyph_v_kerning (hb_font_t *font,
|
|
hb_codepoint_t top_glyph, hb_codepoint_t bottom_glyph)
|
|
{
|
|
return font->get_glyph_v_kerning (top_glyph, bottom_glyph);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_extents:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @extents: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_glyph_extents (hb_font_t *font,
|
|
hb_codepoint_t glyph,
|
|
hb_glyph_extents_t *extents)
|
|
{
|
|
return font->get_glyph_extents (glyph, extents);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_contour_point:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @point_index:
|
|
* @x: (out):
|
|
* @y: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_glyph_contour_point (hb_font_t *font,
|
|
hb_codepoint_t glyph, unsigned int point_index,
|
|
hb_position_t *x, hb_position_t *y)
|
|
{
|
|
return font->get_glyph_contour_point (glyph, point_index, x, y);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_name:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @name: (array length=size):
|
|
* @size:
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_glyph_name (hb_font_t *font,
|
|
hb_codepoint_t glyph,
|
|
char *name, unsigned int size)
|
|
{
|
|
return font->get_glyph_name (glyph, name, size);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_from_name:
|
|
* @font: a font.
|
|
* @name: (array length=len):
|
|
* @len:
|
|
* @glyph: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_glyph_from_name (hb_font_t *font,
|
|
const char *name, int len, /* -1 means nul-terminated */
|
|
hb_codepoint_t *glyph)
|
|
{
|
|
return font->get_glyph_from_name (name, len, glyph);
|
|
}
|
|
|
|
|
|
/* A bit higher-level, and with fallback */
|
|
|
|
/**
|
|
* hb_font_get_extents_for_direction:
|
|
* @font: a font.
|
|
* @direction:
|
|
* @extents: (out):
|
|
*
|
|
*
|
|
*
|
|
* Since: 1.1.3
|
|
**/
|
|
void
|
|
hb_font_get_extents_for_direction (hb_font_t *font,
|
|
hb_direction_t direction,
|
|
hb_font_extents_t *extents)
|
|
{
|
|
return font->get_extents_for_direction (direction, extents);
|
|
}
|
|
/**
|
|
* hb_font_get_glyph_advance_for_direction:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @direction:
|
|
* @x: (out):
|
|
* @y: (out):
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_get_glyph_advance_for_direction (hb_font_t *font,
|
|
hb_codepoint_t glyph,
|
|
hb_direction_t direction,
|
|
hb_position_t *x, hb_position_t *y)
|
|
{
|
|
return font->get_glyph_advance_for_direction (glyph, direction, x, y);
|
|
}
|
|
/**
|
|
* hb_font_get_glyph_advances_for_direction:
|
|
* @font: a font.
|
|
* @direction:
|
|
*
|
|
*
|
|
*
|
|
* Since: 1.8.6
|
|
**/
|
|
HB_EXTERN void
|
|
hb_font_get_glyph_advances_for_direction (hb_font_t* font,
|
|
hb_direction_t direction,
|
|
unsigned int count,
|
|
const hb_codepoint_t *first_glyph,
|
|
unsigned glyph_stride,
|
|
hb_position_t *first_advance,
|
|
unsigned advance_stride)
|
|
{
|
|
font->get_glyph_advances_for_direction (direction, count, first_glyph, glyph_stride, first_advance, advance_stride);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_origin_for_direction:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @direction:
|
|
* @x: (out):
|
|
* @y: (out):
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_get_glyph_origin_for_direction (hb_font_t *font,
|
|
hb_codepoint_t glyph,
|
|
hb_direction_t direction,
|
|
hb_position_t *x, hb_position_t *y)
|
|
{
|
|
return font->get_glyph_origin_for_direction (glyph, direction, x, y);
|
|
}
|
|
|
|
/**
|
|
* hb_font_add_glyph_origin_for_direction:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @direction:
|
|
* @x: (out):
|
|
* @y: (out):
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_add_glyph_origin_for_direction (hb_font_t *font,
|
|
hb_codepoint_t glyph,
|
|
hb_direction_t direction,
|
|
hb_position_t *x, hb_position_t *y)
|
|
{
|
|
return font->add_glyph_origin_for_direction (glyph, direction, x, y);
|
|
}
|
|
|
|
/**
|
|
* hb_font_subtract_glyph_origin_for_direction:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @direction:
|
|
* @x: (out):
|
|
* @y: (out):
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_subtract_glyph_origin_for_direction (hb_font_t *font,
|
|
hb_codepoint_t glyph,
|
|
hb_direction_t direction,
|
|
hb_position_t *x, hb_position_t *y)
|
|
{
|
|
return font->subtract_glyph_origin_for_direction (glyph, direction, x, y);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_kerning_for_direction:
|
|
* @font: a font.
|
|
* @first_glyph:
|
|
* @second_glyph:
|
|
* @direction:
|
|
* @x: (out):
|
|
* @y: (out):
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
* Deprecated: 2.0.0
|
|
**/
|
|
void
|
|
hb_font_get_glyph_kerning_for_direction (hb_font_t *font,
|
|
hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
|
|
hb_direction_t direction,
|
|
hb_position_t *x, hb_position_t *y)
|
|
{
|
|
return font->get_glyph_kerning_for_direction (first_glyph, second_glyph, direction, x, y);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_extents_for_origin:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @direction:
|
|
* @extents: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_glyph_extents_for_origin (hb_font_t *font,
|
|
hb_codepoint_t glyph,
|
|
hb_direction_t direction,
|
|
hb_glyph_extents_t *extents)
|
|
{
|
|
return font->get_glyph_extents_for_origin (glyph, direction, extents);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_glyph_contour_point_for_origin:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @point_index:
|
|
* @direction:
|
|
* @x: (out):
|
|
* @y: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_get_glyph_contour_point_for_origin (hb_font_t *font,
|
|
hb_codepoint_t glyph, unsigned int point_index,
|
|
hb_direction_t direction,
|
|
hb_position_t *x, hb_position_t *y)
|
|
{
|
|
return font->get_glyph_contour_point_for_origin (glyph, point_index, direction, x, y);
|
|
}
|
|
|
|
/* Generates gidDDD if glyph has no name. */
|
|
/**
|
|
* hb_font_glyph_to_string:
|
|
* @font: a font.
|
|
* @glyph:
|
|
* @s: (array length=size):
|
|
* @size:
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_glyph_to_string (hb_font_t *font,
|
|
hb_codepoint_t glyph,
|
|
char *s, unsigned int size)
|
|
{
|
|
font->glyph_to_string (glyph, s, size);
|
|
}
|
|
|
|
/* Parses gidDDD and uniUUUU strings automatically. */
|
|
/**
|
|
* hb_font_glyph_from_string:
|
|
* @font: a font.
|
|
* @s: (array length=len) (element-type uint8_t):
|
|
* @len:
|
|
* @glyph: (out):
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_glyph_from_string (hb_font_t *font,
|
|
const char *s, int len, /* -1 means nul-terminated */
|
|
hb_codepoint_t *glyph)
|
|
{
|
|
return font->glyph_from_string (s, len, glyph);
|
|
}
|
|
|
|
|
|
/*
|
|
* hb_font_t
|
|
*/
|
|
|
|
DEFINE_NULL_INSTANCE (hb_font_t) =
|
|
{
|
|
HB_OBJECT_HEADER_STATIC,
|
|
|
|
nullptr, /* parent */
|
|
const_cast<hb_face_t *> (&_hb_Null_hb_face_t),
|
|
|
|
1000, /* x_scale */
|
|
1000, /* y_scale */
|
|
|
|
0, /* x_ppem */
|
|
0, /* y_ppem */
|
|
0, /* ptem */
|
|
|
|
0, /* num_coords */
|
|
nullptr, /* coords */
|
|
|
|
const_cast<hb_font_funcs_t *> (&_hb_Null_hb_font_funcs_t),
|
|
|
|
/* Zero for the rest is fine. */
|
|
};
|
|
|
|
|
|
static hb_font_t *
|
|
_hb_font_create (hb_face_t *face)
|
|
{
|
|
hb_font_t *font;
|
|
|
|
if (unlikely (!face))
|
|
face = hb_face_get_empty ();
|
|
if (!(font = hb_object_create<hb_font_t> ()))
|
|
return hb_font_get_empty ();
|
|
|
|
hb_face_make_immutable (face);
|
|
font->parent = hb_font_get_empty ();
|
|
font->face = hb_face_reference (face);
|
|
font->klass = hb_font_funcs_get_empty ();
|
|
font->data.init0 (font);
|
|
font->x_scale = font->y_scale = hb_face_get_upem (face);
|
|
|
|
return font;
|
|
}
|
|
|
|
/**
|
|
* hb_font_create: (Xconstructor)
|
|
* @face: a face.
|
|
*
|
|
*
|
|
*
|
|
* Return value: (transfer full):
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_font_t *
|
|
hb_font_create (hb_face_t *face)
|
|
{
|
|
hb_font_t *font = _hb_font_create (face);
|
|
|
|
/* Install our in-house, very lightweight, funcs. */
|
|
hb_ot_font_set_funcs (font);
|
|
|
|
return font;
|
|
}
|
|
|
|
/**
|
|
* hb_font_create_sub_font:
|
|
* @parent: parent font.
|
|
*
|
|
*
|
|
*
|
|
* Return value: (transfer full):
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_font_t *
|
|
hb_font_create_sub_font (hb_font_t *parent)
|
|
{
|
|
if (unlikely (!parent))
|
|
parent = hb_font_get_empty ();
|
|
|
|
hb_font_t *font = _hb_font_create (parent->face);
|
|
|
|
if (unlikely (hb_object_is_immutable (font)))
|
|
return font;
|
|
|
|
font->parent = hb_font_reference (parent);
|
|
|
|
font->x_scale = parent->x_scale;
|
|
font->y_scale = parent->y_scale;
|
|
font->x_ppem = parent->x_ppem;
|
|
font->y_ppem = parent->y_ppem;
|
|
font->ptem = parent->ptem;
|
|
|
|
font->num_coords = parent->num_coords;
|
|
if (!font->num_coords)
|
|
font->coords = nullptr;
|
|
else
|
|
{
|
|
unsigned int size = parent->num_coords * sizeof (parent->coords[0]);
|
|
font->coords = (int *) malloc (size);
|
|
if (unlikely (!font->coords))
|
|
font->num_coords = 0;
|
|
else
|
|
memcpy (font->coords, parent->coords, size);
|
|
}
|
|
|
|
return font;
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_empty:
|
|
*
|
|
*
|
|
*
|
|
* Return value: (transfer full)
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_font_t *
|
|
hb_font_get_empty ()
|
|
{
|
|
return const_cast<hb_font_t *> (&Null(hb_font_t));
|
|
}
|
|
|
|
/**
|
|
* hb_font_reference: (skip)
|
|
* @font: a font.
|
|
*
|
|
*
|
|
*
|
|
* Return value: (transfer full):
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_font_t *
|
|
hb_font_reference (hb_font_t *font)
|
|
{
|
|
return hb_object_reference (font);
|
|
}
|
|
|
|
/**
|
|
* hb_font_destroy: (skip)
|
|
* @font: a font.
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_destroy (hb_font_t *font)
|
|
{
|
|
if (!hb_object_destroy (font)) return;
|
|
|
|
font->data.fini ();
|
|
|
|
if (font->destroy)
|
|
font->destroy (font->user_data);
|
|
|
|
hb_font_destroy (font->parent);
|
|
hb_face_destroy (font->face);
|
|
hb_font_funcs_destroy (font->klass);
|
|
|
|
free (font->coords);
|
|
|
|
free (font);
|
|
}
|
|
|
|
/**
|
|
* hb_font_set_user_data: (skip)
|
|
* @font: a font.
|
|
* @key:
|
|
* @data:
|
|
* @destroy:
|
|
* @replace:
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_set_user_data (hb_font_t *font,
|
|
hb_user_data_key_t *key,
|
|
void * data,
|
|
hb_destroy_func_t destroy,
|
|
hb_bool_t replace)
|
|
{
|
|
return hb_object_set_user_data (font, key, data, destroy, replace);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_user_data: (skip)
|
|
* @font: a font.
|
|
* @key:
|
|
*
|
|
*
|
|
*
|
|
* Return value: (transfer none):
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void *
|
|
hb_font_get_user_data (hb_font_t *font,
|
|
hb_user_data_key_t *key)
|
|
{
|
|
return hb_object_get_user_data (font, key);
|
|
}
|
|
|
|
/**
|
|
* hb_font_make_immutable:
|
|
* @font: a font.
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_make_immutable (hb_font_t *font)
|
|
{
|
|
if (hb_object_is_immutable (font))
|
|
return;
|
|
|
|
if (font->parent)
|
|
hb_font_make_immutable (font->parent);
|
|
|
|
hb_object_make_immutable (font);
|
|
}
|
|
|
|
/**
|
|
* hb_font_is_immutable:
|
|
* @font: a font.
|
|
*
|
|
*
|
|
*
|
|
* Return value:
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_bool_t
|
|
hb_font_is_immutable (hb_font_t *font)
|
|
{
|
|
return hb_object_is_immutable (font);
|
|
}
|
|
|
|
/**
|
|
* hb_font_set_parent:
|
|
* @font: a font.
|
|
* @parent: new parent.
|
|
*
|
|
* Sets parent font of @font.
|
|
*
|
|
* Since: 1.0.5
|
|
**/
|
|
void
|
|
hb_font_set_parent (hb_font_t *font,
|
|
hb_font_t *parent)
|
|
{
|
|
if (hb_object_is_immutable (font))
|
|
return;
|
|
|
|
if (!parent)
|
|
parent = hb_font_get_empty ();
|
|
|
|
hb_font_t *old = font->parent;
|
|
|
|
font->parent = hb_font_reference (parent);
|
|
|
|
hb_font_destroy (old);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_parent:
|
|
* @font: a font.
|
|
*
|
|
*
|
|
*
|
|
* Return value: (transfer none):
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_font_t *
|
|
hb_font_get_parent (hb_font_t *font)
|
|
{
|
|
return font->parent;
|
|
}
|
|
|
|
/**
|
|
* hb_font_set_face:
|
|
* @font: a font.
|
|
* @face: new face.
|
|
*
|
|
* Sets font-face of @font.
|
|
*
|
|
* Since: 1.4.3
|
|
**/
|
|
void
|
|
hb_font_set_face (hb_font_t *font,
|
|
hb_face_t *face)
|
|
{
|
|
if (hb_object_is_immutable (font))
|
|
return;
|
|
|
|
if (unlikely (!face))
|
|
face = hb_face_get_empty ();
|
|
|
|
hb_face_t *old = font->face;
|
|
|
|
font->face = hb_face_reference (face);
|
|
|
|
hb_face_destroy (old);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_face:
|
|
* @font: a font.
|
|
*
|
|
*
|
|
*
|
|
* Return value: (transfer none):
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
hb_face_t *
|
|
hb_font_get_face (hb_font_t *font)
|
|
{
|
|
return font->face;
|
|
}
|
|
|
|
|
|
/**
|
|
* hb_font_set_funcs:
|
|
* @font: a font.
|
|
* @klass: (closure font_data) (destroy destroy) (scope notified):
|
|
* @font_data:
|
|
* @destroy:
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_set_funcs (hb_font_t *font,
|
|
hb_font_funcs_t *klass,
|
|
void *font_data,
|
|
hb_destroy_func_t destroy)
|
|
{
|
|
if (hb_object_is_immutable (font))
|
|
{
|
|
if (destroy)
|
|
destroy (font_data);
|
|
return;
|
|
}
|
|
|
|
if (font->destroy)
|
|
font->destroy (font->user_data);
|
|
|
|
if (!klass)
|
|
klass = hb_font_funcs_get_empty ();
|
|
|
|
hb_font_funcs_reference (klass);
|
|
hb_font_funcs_destroy (font->klass);
|
|
font->klass = klass;
|
|
font->user_data = font_data;
|
|
font->destroy = destroy;
|
|
}
|
|
|
|
/**
|
|
* hb_font_set_funcs_data:
|
|
* @font: a font.
|
|
* @font_data: (destroy destroy) (scope notified):
|
|
* @destroy:
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_set_funcs_data (hb_font_t *font,
|
|
void *font_data,
|
|
hb_destroy_func_t destroy)
|
|
{
|
|
/* Destroy user_data? */
|
|
if (hb_object_is_immutable (font))
|
|
{
|
|
if (destroy)
|
|
destroy (font_data);
|
|
return;
|
|
}
|
|
|
|
if (font->destroy)
|
|
font->destroy (font->user_data);
|
|
|
|
font->user_data = font_data;
|
|
font->destroy = destroy;
|
|
}
|
|
|
|
|
|
/**
|
|
* hb_font_set_scale:
|
|
* @font: a font.
|
|
* @x_scale:
|
|
* @y_scale:
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_set_scale (hb_font_t *font,
|
|
int x_scale,
|
|
int y_scale)
|
|
{
|
|
if (hb_object_is_immutable (font))
|
|
return;
|
|
|
|
font->x_scale = x_scale;
|
|
font->y_scale = y_scale;
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_scale:
|
|
* @font: a font.
|
|
* @x_scale: (out):
|
|
* @y_scale: (out):
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_get_scale (hb_font_t *font,
|
|
int *x_scale,
|
|
int *y_scale)
|
|
{
|
|
if (x_scale) *x_scale = font->x_scale;
|
|
if (y_scale) *y_scale = font->y_scale;
|
|
}
|
|
|
|
/**
|
|
* hb_font_set_ppem:
|
|
* @font: a font.
|
|
* @x_ppem:
|
|
* @y_ppem:
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_set_ppem (hb_font_t *font,
|
|
unsigned int x_ppem,
|
|
unsigned int y_ppem)
|
|
{
|
|
if (hb_object_is_immutable (font))
|
|
return;
|
|
|
|
font->x_ppem = x_ppem;
|
|
font->y_ppem = y_ppem;
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_ppem:
|
|
* @font: a font.
|
|
* @x_ppem: (out):
|
|
* @y_ppem: (out):
|
|
*
|
|
*
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
void
|
|
hb_font_get_ppem (hb_font_t *font,
|
|
unsigned int *x_ppem,
|
|
unsigned int *y_ppem)
|
|
{
|
|
if (x_ppem) *x_ppem = font->x_ppem;
|
|
if (y_ppem) *y_ppem = font->y_ppem;
|
|
}
|
|
|
|
/**
|
|
* hb_font_set_ptem:
|
|
* @font: a font.
|
|
* @ptem: font size in points.
|
|
*
|
|
* Sets "point size" of the font. Set to 0 to unset.
|
|
*
|
|
* There are 72 points in an inch.
|
|
*
|
|
* Since: 1.6.0
|
|
**/
|
|
void
|
|
hb_font_set_ptem (hb_font_t *font, float ptem)
|
|
{
|
|
if (hb_object_is_immutable (font))
|
|
return;
|
|
|
|
font->ptem = ptem;
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_ptem:
|
|
* @font: a font.
|
|
*
|
|
* Gets the "point size" of the font. A value of 0 means unset.
|
|
*
|
|
* Return value: Point size.
|
|
*
|
|
* Since: 0.9.2
|
|
**/
|
|
float
|
|
hb_font_get_ptem (hb_font_t *font)
|
|
{
|
|
return font->ptem;
|
|
}
|
|
|
|
/*
|
|
* Variations
|
|
*/
|
|
|
|
static void
|
|
_hb_font_adopt_var_coords_normalized (hb_font_t *font,
|
|
int *coords, /* 2.14 normalized */
|
|
unsigned int coords_length)
|
|
{
|
|
free (font->coords);
|
|
|
|
font->coords = coords;
|
|
font->num_coords = coords_length;
|
|
}
|
|
|
|
/**
|
|
* hb_font_set_variations:
|
|
*
|
|
* Since: 1.4.2
|
|
*/
|
|
void
|
|
hb_font_set_variations (hb_font_t *font,
|
|
const hb_variation_t *variations,
|
|
unsigned int variations_length)
|
|
{
|
|
if (hb_object_is_immutable (font))
|
|
return;
|
|
|
|
if (!variations_length)
|
|
{
|
|
hb_font_set_var_coords_normalized (font, nullptr, 0);
|
|
return;
|
|
}
|
|
|
|
unsigned int coords_length = hb_ot_var_get_axis_count (font->face);
|
|
|
|
int *normalized = coords_length ? (int *) calloc (coords_length, sizeof (int)) : nullptr;
|
|
if (unlikely (coords_length && !normalized))
|
|
return;
|
|
|
|
hb_ot_var_normalize_variations (font->face,
|
|
variations, variations_length,
|
|
normalized, coords_length);
|
|
_hb_font_adopt_var_coords_normalized (font, normalized, coords_length);
|
|
}
|
|
|
|
/**
|
|
* hb_font_set_var_coords_design:
|
|
*
|
|
* Since: 1.4.2
|
|
*/
|
|
void
|
|
hb_font_set_var_coords_design (hb_font_t *font,
|
|
const float *coords,
|
|
unsigned int coords_length)
|
|
{
|
|
if (hb_object_is_immutable (font))
|
|
return;
|
|
|
|
int *normalized = coords_length ? (int *) calloc (coords_length, sizeof (int)) : nullptr;
|
|
if (unlikely (coords_length && !normalized))
|
|
return;
|
|
|
|
hb_ot_var_normalize_coords (font->face, coords_length, coords, normalized);
|
|
_hb_font_adopt_var_coords_normalized (font, normalized, coords_length);
|
|
}
|
|
|
|
/**
|
|
* hb_font_set_var_coords_normalized:
|
|
*
|
|
* Since: 1.4.2
|
|
*/
|
|
void
|
|
hb_font_set_var_coords_normalized (hb_font_t *font,
|
|
const int *coords, /* 2.14 normalized */
|
|
unsigned int coords_length)
|
|
{
|
|
if (hb_object_is_immutable (font))
|
|
return;
|
|
|
|
int *copy = coords_length ? (int *) calloc (coords_length, sizeof (coords[0])) : nullptr;
|
|
if (unlikely (coords_length && !copy))
|
|
return;
|
|
|
|
if (coords_length)
|
|
memcpy (copy, coords, coords_length * sizeof (coords[0]));
|
|
|
|
_hb_font_adopt_var_coords_normalized (font, copy, coords_length);
|
|
}
|
|
|
|
/**
|
|
* hb_font_get_var_coords_normalized:
|
|
*
|
|
* Return value is valid as long as variation coordinates of the font
|
|
* are not modified.
|
|
*
|
|
* Since: 1.4.2
|
|
*/
|
|
const int *
|
|
hb_font_get_var_coords_normalized (hb_font_t *font,
|
|
unsigned int *length)
|
|
{
|
|
if (length)
|
|
*length = font->num_coords;
|
|
|
|
return font->coords;
|
|
}
|
|
|
|
|
|
/*
|
|
* Deprecated get_glyph_func():
|
|
*/
|
|
|
|
struct hb_trampoline_closure_t
|
|
{
|
|
void *user_data;
|
|
hb_destroy_func_t destroy;
|
|
unsigned int ref_count;
|
|
};
|
|
|
|
template <typename FuncType>
|
|
struct hb_trampoline_t
|
|
{
|
|
hb_trampoline_closure_t closure; /* Must be first. */
|
|
FuncType func;
|
|
};
|
|
|
|
template <typename FuncType>
|
|
static hb_trampoline_t<FuncType> *
|
|
trampoline_create (FuncType func,
|
|
void *user_data,
|
|
hb_destroy_func_t destroy)
|
|
{
|
|
typedef hb_trampoline_t<FuncType> trampoline_t;
|
|
|
|
trampoline_t *trampoline = (trampoline_t *) calloc (1, sizeof (trampoline_t));
|
|
|
|
if (unlikely (!trampoline))
|
|
return nullptr;
|
|
|
|
trampoline->closure.user_data = user_data;
|
|
trampoline->closure.destroy = destroy;
|
|
trampoline->closure.ref_count = 1;
|
|
trampoline->func = func;
|
|
|
|
return trampoline;
|
|
}
|
|
|
|
static void
|
|
trampoline_reference (hb_trampoline_closure_t *closure)
|
|
{
|
|
closure->ref_count++;
|
|
}
|
|
|
|
static void
|
|
trampoline_destroy (void *user_data)
|
|
{
|
|
hb_trampoline_closure_t *closure = (hb_trampoline_closure_t *) user_data;
|
|
|
|
if (--closure->ref_count)
|
|
return;
|
|
|
|
if (closure->destroy)
|
|
closure->destroy (closure->user_data);
|
|
free (closure);
|
|
}
|
|
|
|
typedef hb_trampoline_t<hb_font_get_glyph_func_t> hb_font_get_glyph_trampoline_t;
|
|
|
|
static hb_bool_t
|
|
hb_font_get_nominal_glyph_trampoline (hb_font_t *font,
|
|
void *font_data,
|
|
hb_codepoint_t unicode,
|
|
hb_codepoint_t *glyph,
|
|
void *user_data)
|
|
{
|
|
hb_font_get_glyph_trampoline_t *trampoline = (hb_font_get_glyph_trampoline_t *) user_data;
|
|
return trampoline->func (font, font_data, unicode, 0, glyph, trampoline->closure.user_data);
|
|
}
|
|
|
|
static hb_bool_t
|
|
hb_font_get_variation_glyph_trampoline (hb_font_t *font,
|
|
void *font_data,
|
|
hb_codepoint_t unicode,
|
|
hb_codepoint_t variation_selector,
|
|
hb_codepoint_t *glyph,
|
|
void *user_data)
|
|
{
|
|
hb_font_get_glyph_trampoline_t *trampoline = (hb_font_get_glyph_trampoline_t *) user_data;
|
|
return trampoline->func (font, font_data, unicode, variation_selector, glyph, trampoline->closure.user_data);
|
|
}
|
|
|
|
/**
|
|
* hb_font_funcs_set_glyph_func:
|
|
* @ffuncs: font functions.
|
|
* @func: (closure user_data) (destroy destroy) (scope notified): callback function.
|
|
* @user_data: data to pass to @func.
|
|
* @destroy: function to call when @user_data is not needed anymore.
|
|
*
|
|
* Deprecated. Use hb_font_funcs_set_nominal_glyph_func() and
|
|
* hb_font_funcs_set_variation_glyph_func() instead.
|
|
*
|
|
* Since: 0.9.2
|
|
* Deprecated: 1.2.3
|
|
**/
|
|
void
|
|
hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs,
|
|
hb_font_get_glyph_func_t func,
|
|
void *user_data, hb_destroy_func_t destroy)
|
|
{
|
|
hb_font_get_glyph_trampoline_t *trampoline;
|
|
|
|
trampoline = trampoline_create (func, user_data, destroy);
|
|
if (unlikely (!trampoline))
|
|
{
|
|
if (destroy)
|
|
destroy (user_data);
|
|
return;
|
|
}
|
|
|
|
hb_font_funcs_set_nominal_glyph_func (ffuncs,
|
|
hb_font_get_nominal_glyph_trampoline,
|
|
trampoline,
|
|
trampoline_destroy);
|
|
|
|
trampoline_reference (&trampoline->closure);
|
|
hb_font_funcs_set_variation_glyph_func (ffuncs,
|
|
hb_font_get_variation_glyph_trampoline,
|
|
trampoline,
|
|
trampoline_destroy);
|
|
}
|