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authorDenis Bitouzé <dbitouze@wanadoo.fr>2021-02-25 18:23:07 +0000
committerDenis Bitouzé <dbitouze@wanadoo.fr>2021-02-25 18:23:07 +0000
commitc6101f91d071883b48b1b4b51e5eba0f36d9a78d (patch)
tree1bf7f5a881d7a4f5c5bf59d0b2821943dd822372 /Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ft.cc
parent07ee7222e389b0777456b427a55c22d0e6ffd267 (diff)
French translation for tlmgr updated
git-svn-id: svn://tug.org/texlive/trunk@57912 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ft.cc')
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diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ft.cc b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ft.cc
deleted file mode 100644
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--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ft.cc
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@@ -1,1042 +0,0 @@
-/*
- * Copyright © 2009 Red Hat, Inc.
- * Copyright © 2009 Keith Stribley
- * Copyright © 2015 Google, Inc.
- *
- * 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.
- *
- * Red Hat Author(s): Behdad Esfahbod
- * Google Author(s): Behdad Esfahbod
- */
-
-#include "hb.hh"
-
-#ifdef HAVE_FREETYPE
-
-#include "hb-ft.h"
-
-#include "hb-font.hh"
-#include "hb-machinery.hh"
-#include "hb-cache.hh"
-
-#include FT_ADVANCES_H
-#include FT_MULTIPLE_MASTERS_H
-#include FT_TRUETYPE_TABLES_H
-
-
-/**
- * SECTION:hb-ft
- * @title: hb-ft
- * @short_description: FreeType integration
- * @include: hb-ft.h
- *
- * Functions for using HarfBuzz with the FreeType library.
- *
- * HarfBuzz supports using FreeType to provide face and
- * font data.
- *
- * <note>Note that FreeType is not thread-safe, therefore these
- * functions are not thread-safe either.</note>
- **/
-
-
-/* TODO:
- *
- * In general, this file does a fine job of what it's supposed to do.
- * There are, however, things that need more work:
- *
- * - FreeType works in 26.6 mode. Clients can decide to use that mode, and everything
- * would work fine. However, we also abuse this API for performing in font-space,
- * but don't pass the correct flags to FreeType. We just abuse the no-hinting mode
- * for that, such that no rounding etc happens. As such, we don't set ppem, and
- * pass NO_HINTING as load_flags. Would be much better to use NO_SCALE, and scale
- * ourselves.
- *
- * - We don't handle / allow for emboldening / obliqueing.
- *
- * - In the future, we should add constructors to create fonts in font space?
- */
-
-
-struct hb_ft_font_t
-{
- mutable hb_mutex_t lock;
- FT_Face ft_face;
- int load_flags;
- bool symbol; /* Whether selected cmap is symbol cmap. */
- bool unref; /* Whether to destroy ft_face when done. */
-
- mutable hb_atomic_int_t cached_x_scale;
- mutable hb_advance_cache_t advance_cache;
-};
-
-static hb_ft_font_t *
-_hb_ft_font_create (FT_Face ft_face, bool symbol, bool unref)
-{
- hb_ft_font_t *ft_font = (hb_ft_font_t *) calloc (1, sizeof (hb_ft_font_t));
- if (unlikely (!ft_font)) return nullptr;
-
- ft_font->lock.init ();
- ft_font->ft_face = ft_face;
- ft_font->symbol = symbol;
- ft_font->unref = unref;
-
- ft_font->load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING;
-
- ft_font->cached_x_scale.set_relaxed (0);
- ft_font->advance_cache.init ();
-
- return ft_font;
-}
-
-static void
-_hb_ft_face_destroy (void *data)
-{
- FT_Done_Face ((FT_Face) data);
-}
-
-static void
-_hb_ft_font_destroy (void *data)
-{
- hb_ft_font_t *ft_font = (hb_ft_font_t *) data;
-
- ft_font->advance_cache.fini ();
-
- if (ft_font->unref)
- _hb_ft_face_destroy (ft_font->ft_face);
-
- ft_font->lock.fini ();
-
- free (ft_font);
-}
-
-/**
- * hb_ft_font_set_load_flags:
- * @font: #hb_font_t to work upon
- * @load_flags: The FreeType load flags to set
- *
- * Sets the FT_Load_Glyph load flags for the specified #hb_font_t.
- *
- * For more information, see
- * https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#ft_load_xxx
- *
- * Since: 1.0.5
- **/
-void
-hb_ft_font_set_load_flags (hb_font_t *font, int load_flags)
-{
- if (hb_object_is_immutable (font))
- return;
-
- if (unlikely (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy))
- return;
-
- hb_ft_font_t *ft_font = (hb_ft_font_t *) font->user_data;
-
- ft_font->load_flags = load_flags;
-}
-
-/**
- * hb_ft_font_get_load_flags:
- * @font: #hb_font_t to work upon
- *
- * Fetches the FT_Load_Glyph load flags of the specified #hb_font_t.
- *
- * For more information, see
- * https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#ft_load_xxx
- *
- * Return value: FT_Load_Glyph flags found
- *
- * Since: 1.0.5
- **/
-int
-hb_ft_font_get_load_flags (hb_font_t *font)
-{
- if (unlikely (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy))
- return 0;
-
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data;
-
- return ft_font->load_flags;
-}
-
-/**
- * hb_ft_get_face:
- * @font: #hb_font_t to work upon
- *
- * Fetches the FT_Face associated with the specified #hb_font_t
- * font object.
- *
- * Return value: the FT_Face found
- *
- * Since: 0.9.2
- **/
-FT_Face
-hb_ft_font_get_face (hb_font_t *font)
-{
- if (unlikely (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy))
- return nullptr;
-
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data;
-
- return ft_font->ft_face;
-}
-
-/**
- * hb_ft_font_lock_face:
- * @font:
- *
- *
- *
- * Return value:
- * Since: 2.6.5
- **/
-FT_Face
-hb_ft_font_lock_face (hb_font_t *font)
-{
- if (unlikely (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy))
- return nullptr;
-
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data;
-
- ft_font->lock.lock ();
-
- return ft_font->ft_face;
-}
-
-/**
- * hb_ft_font_unlock_face:
- * @font:
- *
- *
- *
- * Return value:
- * Since: 2.6.5
- **/
-void
-hb_ft_font_unlock_face (hb_font_t *font)
-{
- if (unlikely (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy))
- return;
-
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data;
-
- ft_font->lock.unlock ();
-}
-
-
-static hb_bool_t
-hb_ft_get_nominal_glyph (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t unicode,
- hb_codepoint_t *glyph,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_lock_t lock (ft_font->lock);
- unsigned int g = FT_Get_Char_Index (ft_font->ft_face, unicode);
-
- if (unlikely (!g))
- {
- if (unlikely (ft_font->symbol) && unicode <= 0x00FFu)
- {
- /* For symbol-encoded OpenType fonts, we duplicate the
- * U+F000..F0FF range at U+0000..U+00FF. That's what
- * Windows seems to do, and that's hinted about at:
- * https://docs.microsoft.com/en-us/typography/opentype/spec/recom
- * under "Non-Standard (Symbol) Fonts". */
- g = FT_Get_Char_Index (ft_font->ft_face, 0xF000u + unicode);
- if (!g)
- return false;
- }
- else
- return false;
- }
-
- *glyph = g;
- return true;
-}
-
-static unsigned int
-hb_ft_get_nominal_glyphs (hb_font_t *font HB_UNUSED,
- void *font_data,
- unsigned int count,
- const hb_codepoint_t *first_unicode,
- unsigned int unicode_stride,
- hb_codepoint_t *first_glyph,
- unsigned int glyph_stride,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_lock_t lock (ft_font->lock);
- unsigned int done;
- for (done = 0;
- done < count && (*first_glyph = FT_Get_Char_Index (ft_font->ft_face, *first_unicode));
- done++)
- {
- first_unicode = &StructAtOffsetUnaligned<hb_codepoint_t> (first_unicode, unicode_stride);
- first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride);
- }
- /* We don't need to do ft_font->symbol dance here, since HB calls the singular
- * nominal_glyph() for what we don't handle here. */
- return done;
-}
-
-
-static hb_bool_t
-hb_ft_get_variation_glyph (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t unicode,
- hb_codepoint_t variation_selector,
- hb_codepoint_t *glyph,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_lock_t lock (ft_font->lock);
- unsigned int g = FT_Face_GetCharVariantIndex (ft_font->ft_face, unicode, variation_selector);
-
- if (unlikely (!g))
- return false;
-
- *glyph = g;
- return true;
-}
-
-static void
-hb_ft_get_glyph_h_advances (hb_font_t* font, void* font_data,
- unsigned count,
- const hb_codepoint_t *first_glyph,
- unsigned glyph_stride,
- hb_position_t *first_advance,
- unsigned advance_stride,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_lock_t lock (ft_font->lock);
- FT_Face ft_face = ft_font->ft_face;
- int load_flags = ft_font->load_flags;
- int mult = font->x_scale < 0 ? -1 : +1;
-
- if (font->x_scale != ft_font->cached_x_scale.get ())
- {
- ft_font->advance_cache.clear ();
- ft_font->cached_x_scale.set (font->x_scale);
- }
-
- for (unsigned int i = 0; i < count; i++)
- {
- FT_Fixed v = 0;
- hb_codepoint_t glyph = *first_glyph;
-
- unsigned int cv;
- if (ft_font->advance_cache.get (glyph, &cv))
- v = cv;
- else
- {
- FT_Get_Advance (ft_face, glyph, load_flags, &v);
- ft_font->advance_cache.set (glyph, v);
- }
-
- *first_advance = (v * mult + (1<<9)) >> 10;
- first_glyph = &StructAtOffsetUnaligned<hb_codepoint_t> (first_glyph, glyph_stride);
- first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
- }
-}
-
-static hb_position_t
-hb_ft_get_glyph_v_advance (hb_font_t *font,
- void *font_data,
- hb_codepoint_t glyph,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_lock_t lock (ft_font->lock);
- FT_Fixed v;
-
- if (unlikely (FT_Get_Advance (ft_font->ft_face, glyph, ft_font->load_flags | FT_LOAD_VERTICAL_LAYOUT, &v)))
- return 0;
-
- if (font->y_scale < 0)
- v = -v;
-
- /* Note: FreeType's vertical metrics grows downward while other FreeType coordinates
- * have a Y growing upward. Hence the extra negation. */
- return (-v + (1<<9)) >> 10;
-}
-
-static hb_bool_t
-hb_ft_get_glyph_v_origin (hb_font_t *font,
- void *font_data,
- hb_codepoint_t glyph,
- hb_position_t *x,
- hb_position_t *y,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_lock_t lock (ft_font->lock);
- FT_Face ft_face = ft_font->ft_face;
-
- if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags)))
- return false;
-
- /* Note: FreeType's vertical metrics grows downward while other FreeType coordinates
- * have a Y growing upward. Hence the extra negation. */
- *x = ft_face->glyph->metrics.horiBearingX - ft_face->glyph->metrics.vertBearingX;
- *y = ft_face->glyph->metrics.horiBearingY - (-ft_face->glyph->metrics.vertBearingY);
-
- if (font->x_scale < 0)
- *x = -*x;
- if (font->y_scale < 0)
- *y = -*y;
-
- return true;
-}
-
-#ifndef HB_NO_OT_SHAPE_FALLBACK
-static hb_position_t
-hb_ft_get_glyph_h_kerning (hb_font_t *font,
- void *font_data,
- hb_codepoint_t left_glyph,
- hb_codepoint_t right_glyph,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- FT_Vector kerningv;
-
- FT_Kerning_Mode mode = font->x_ppem ? FT_KERNING_DEFAULT : FT_KERNING_UNFITTED;
- if (FT_Get_Kerning (ft_font->ft_face, left_glyph, right_glyph, mode, &kerningv))
- return 0;
-
- return kerningv.x;
-}
-#endif
-
-static hb_bool_t
-hb_ft_get_glyph_extents (hb_font_t *font,
- void *font_data,
- hb_codepoint_t glyph,
- hb_glyph_extents_t *extents,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_lock_t lock (ft_font->lock);
- FT_Face ft_face = ft_font->ft_face;
-
- if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags)))
- return false;
-
- extents->x_bearing = ft_face->glyph->metrics.horiBearingX;
- extents->y_bearing = ft_face->glyph->metrics.horiBearingY;
- extents->width = ft_face->glyph->metrics.width;
- extents->height = -ft_face->glyph->metrics.height;
- if (font->x_scale < 0)
- {
- extents->x_bearing = -extents->x_bearing;
- extents->width = -extents->width;
- }
- if (font->y_scale < 0)
- {
- extents->y_bearing = -extents->y_bearing;
- extents->height = -extents->height;
- }
- return true;
-}
-
-static hb_bool_t
-hb_ft_get_glyph_contour_point (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t glyph,
- unsigned int point_index,
- hb_position_t *x,
- hb_position_t *y,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_lock_t lock (ft_font->lock);
- FT_Face ft_face = ft_font->ft_face;
-
- if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags)))
- return false;
-
- if (unlikely (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE))
- return false;
-
- if (unlikely (point_index >= (unsigned int) ft_face->glyph->outline.n_points))
- return false;
-
- *x = ft_face->glyph->outline.points[point_index].x;
- *y = ft_face->glyph->outline.points[point_index].y;
-
- return true;
-}
-
-static hb_bool_t
-hb_ft_get_glyph_name (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_codepoint_t glyph,
- char *name, unsigned int size,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_lock_t lock (ft_font->lock);
- FT_Face ft_face = ft_font->ft_face;
-
- hb_bool_t ret = !FT_Get_Glyph_Name (ft_face, glyph, name, size);
- if (ret && (size && !*name))
- ret = false;
-
- return ret;
-}
-
-static hb_bool_t
-hb_ft_get_glyph_from_name (hb_font_t *font HB_UNUSED,
- void *font_data,
- const char *name, int len, /* -1 means nul-terminated */
- hb_codepoint_t *glyph,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_lock_t lock (ft_font->lock);
- FT_Face ft_face = ft_font->ft_face;
-
- if (len < 0)
- *glyph = FT_Get_Name_Index (ft_face, (FT_String *) name);
- else {
- /* Make a nul-terminated version. */
- char buf[128];
- len = hb_min (len, (int) sizeof (buf) - 1);
- strncpy (buf, name, len);
- buf[len] = '\0';
- *glyph = FT_Get_Name_Index (ft_face, buf);
- }
-
- if (*glyph == 0)
- {
- /* Check whether the given name was actually the name of glyph 0. */
- char buf[128];
- if (!FT_Get_Glyph_Name(ft_face, 0, buf, sizeof (buf)) &&
- len < 0 ? !strcmp (buf, name) : !strncmp (buf, name, len))
- return true;
- }
-
- return *glyph != 0;
-}
-
-static hb_bool_t
-hb_ft_get_font_h_extents (hb_font_t *font HB_UNUSED,
- void *font_data,
- hb_font_extents_t *metrics,
- void *user_data HB_UNUSED)
-{
- const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_lock_t lock (ft_font->lock);
- FT_Face ft_face = ft_font->ft_face;
- metrics->ascender = FT_MulFix(ft_face->ascender, ft_face->size->metrics.y_scale);
- metrics->descender = FT_MulFix(ft_face->descender, ft_face->size->metrics.y_scale);
- metrics->line_gap = FT_MulFix( ft_face->height, ft_face->size->metrics.y_scale ) - (metrics->ascender - metrics->descender);
- if (font->y_scale < 0)
- {
- metrics->ascender = -metrics->ascender;
- metrics->descender = -metrics->descender;
- metrics->line_gap = -metrics->line_gap;
- }
- return true;
-}
-
-#if HB_USE_ATEXIT
-static void free_static_ft_funcs ();
-#endif
-
-static struct hb_ft_font_funcs_lazy_loader_t : hb_font_funcs_lazy_loader_t<hb_ft_font_funcs_lazy_loader_t>
-{
- static hb_font_funcs_t *create ()
- {
- hb_font_funcs_t *funcs = hb_font_funcs_create ();
-
- hb_font_funcs_set_font_h_extents_func (funcs, hb_ft_get_font_h_extents, nullptr, nullptr);
- //hb_font_funcs_set_font_v_extents_func (funcs, hb_ft_get_font_v_extents, nullptr, nullptr);
- hb_font_funcs_set_nominal_glyph_func (funcs, hb_ft_get_nominal_glyph, nullptr, nullptr);
- hb_font_funcs_set_nominal_glyphs_func (funcs, hb_ft_get_nominal_glyphs, nullptr, nullptr);
- hb_font_funcs_set_variation_glyph_func (funcs, hb_ft_get_variation_glyph, nullptr, nullptr);
- hb_font_funcs_set_glyph_h_advances_func (funcs, hb_ft_get_glyph_h_advances, nullptr, nullptr);
- hb_font_funcs_set_glyph_v_advance_func (funcs, hb_ft_get_glyph_v_advance, nullptr, nullptr);
- //hb_font_funcs_set_glyph_h_origin_func (funcs, hb_ft_get_glyph_h_origin, nullptr, nullptr);
- hb_font_funcs_set_glyph_v_origin_func (funcs, hb_ft_get_glyph_v_origin, nullptr, nullptr);
-#ifndef HB_NO_OT_SHAPE_FALLBACK
- hb_font_funcs_set_glyph_h_kerning_func (funcs, hb_ft_get_glyph_h_kerning, nullptr, nullptr);
-#endif
- //hb_font_funcs_set_glyph_v_kerning_func (funcs, hb_ft_get_glyph_v_kerning, nullptr, nullptr);
- hb_font_funcs_set_glyph_extents_func (funcs, hb_ft_get_glyph_extents, nullptr, nullptr);
- hb_font_funcs_set_glyph_contour_point_func (funcs, hb_ft_get_glyph_contour_point, nullptr, nullptr);
- hb_font_funcs_set_glyph_name_func (funcs, hb_ft_get_glyph_name, nullptr, nullptr);
- hb_font_funcs_set_glyph_from_name_func (funcs, hb_ft_get_glyph_from_name, nullptr, nullptr);
-
- hb_font_funcs_make_immutable (funcs);
-
-#if HB_USE_ATEXIT
- atexit (free_static_ft_funcs);
-#endif
-
- return funcs;
- }
-} static_ft_funcs;
-
-#if HB_USE_ATEXIT
-static
-void free_static_ft_funcs ()
-{
- static_ft_funcs.free_instance ();
-}
-#endif
-
-static hb_font_funcs_t *
-_hb_ft_get_font_funcs ()
-{
- return static_ft_funcs.get_unconst ();
-}
-
-static void
-_hb_ft_font_set_funcs (hb_font_t *font, FT_Face ft_face, bool unref)
-{
- bool symbol = ft_face->charmap && ft_face->charmap->encoding == FT_ENCODING_MS_SYMBOL;
-
- hb_ft_font_t *ft_font = _hb_ft_font_create (ft_face, symbol, unref);
- if (unlikely (!ft_font)) return;
-
- hb_font_set_funcs (font,
- _hb_ft_get_font_funcs (),
- ft_font,
- _hb_ft_font_destroy);
-}
-
-
-static hb_blob_t *
-_hb_ft_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
-{
- FT_Face ft_face = (FT_Face) user_data;
- FT_Byte *buffer;
- FT_ULong length = 0;
- FT_Error error;
-
- /* Note: FreeType like HarfBuzz uses the NONE tag for fetching the entire blob */
-
- error = FT_Load_Sfnt_Table (ft_face, tag, 0, nullptr, &length);
- if (error)
- return nullptr;
-
- buffer = (FT_Byte *) malloc (length);
- if (!buffer)
- return nullptr;
-
- error = FT_Load_Sfnt_Table (ft_face, tag, 0, buffer, &length);
- if (error)
- {
- free (buffer);
- return nullptr;
- }
-
- return hb_blob_create ((const char *) buffer, length,
- HB_MEMORY_MODE_WRITABLE,
- buffer, free);
-}
-
-/**
- * hb_ft_face_create:
- * @ft_face: (destroy destroy) (scope notified): FT_Face to work upon
- * @destroy: (optional): A callback to call when the face object is not needed anymore
- *
- * Creates an #hb_face_t face object from the specified FT_Face.
- *
- * This variant of the function does not provide any life-cycle management.
- *
- * Most client programs should use hb_ft_face_create_referenced()
- * (or, perhaps, hb_ft_face_create_cached()) instead.
- *
- * If you know you have valid reasons not to use hb_ft_face_create_referenced(),
- * then it is the client program's responsibility to destroy @ft_face
- * after the #hb_face_t face object has been destroyed.
- *
- * Return value: (transfer full): the new #hb_face_t face object
- *
- * Since: 0.9.2
- **/
-hb_face_t *
-hb_ft_face_create (FT_Face ft_face,
- hb_destroy_func_t destroy)
-{
- hb_face_t *face;
-
- if (!ft_face->stream->read) {
- hb_blob_t *blob;
-
- blob = hb_blob_create ((const char *) ft_face->stream->base,
- (unsigned int) ft_face->stream->size,
- HB_MEMORY_MODE_READONLY,
- ft_face, destroy);
- face = hb_face_create (blob, ft_face->face_index);
- hb_blob_destroy (blob);
- } else {
- face = hb_face_create_for_tables (_hb_ft_reference_table, ft_face, destroy);
- }
-
- hb_face_set_index (face, ft_face->face_index);
- hb_face_set_upem (face, ft_face->units_per_EM);
-
- return face;
-}
-
-/**
- * hb_ft_face_create_referenced:
- * @ft_face: FT_Face to work upon
- *
- * Creates an #hb_face_t face object from the specified FT_Face.
- *
- * This is the preferred variant of the hb_ft_face_create*
- * function family, because it calls FT_Reference_Face() on @ft_face,
- * ensuring that @ft_face remains alive as long as the resulting
- * #hb_face_t face object remains alive. Also calls FT_Done_Face()
- * when the #hb_face_t face object is destroyed.
- *
- * Use this version unless you know you have good reasons not to.
- *
- * Return value: (transfer full): the new #hb_face_t face object
- *
- * Since: 0.9.38
- **/
-hb_face_t *
-hb_ft_face_create_referenced (FT_Face ft_face)
-{
- FT_Reference_Face (ft_face);
- return hb_ft_face_create (ft_face, _hb_ft_face_destroy);
-}
-
-static void
-hb_ft_face_finalize (FT_Face ft_face)
-{
- hb_face_destroy ((hb_face_t *) ft_face->generic.data);
-}
-
-/**
- * hb_ft_face_create_cached:
- * @ft_face: FT_Face to work upon
- *
- * Creates an #hb_face_t face object from the specified FT_Face.
- *
- * This variant of the function caches the newly created #hb_face_t
- * face object, using the @generic pointer of @ft_face. Subsequent function
- * calls that are passed the same @ft_face parameter will have the same
- * #hb_face_t returned to them, and that #hb_face_t will be correctly
- * reference counted.
- *
- * However, client programs are still responsible for destroying
- * @ft_face after the last #hb_face_t face object has been destroyed.
- *
- * Return value: (transfer full): the new #hb_face_t face object
- *
- * Since: 0.9.2
- **/
-hb_face_t *
-hb_ft_face_create_cached (FT_Face ft_face)
-{
- if (unlikely (!ft_face->generic.data || ft_face->generic.finalizer != (FT_Generic_Finalizer) hb_ft_face_finalize))
- {
- if (ft_face->generic.finalizer)
- ft_face->generic.finalizer (ft_face);
-
- ft_face->generic.data = hb_ft_face_create (ft_face, nullptr);
- ft_face->generic.finalizer = (FT_Generic_Finalizer) hb_ft_face_finalize;
- }
-
- return hb_face_reference ((hb_face_t *) ft_face->generic.data);
-}
-
-/**
- * hb_ft_font_create:
- * @ft_face: (destroy destroy) (scope notified): FT_Face to work upon
- * @destroy: (optional): A callback to call when the font object is not needed anymore
- *
- * Creates an #hb_font_t font object from the specified FT_Face.
- *
- * <note>Note: You must set the face size on @ft_face before calling
- * hb_ft_font_create() on it. Otherwise, HarfBuzz will not pick up
- * the face size.</note>
- *
- * This variant of the function does not provide any life-cycle management.
- *
- * Most client programs should use hb_ft_font_create_referenced()
- * instead.
- *
- * If you know you have valid reasons not to use hb_ft_font_create_referenced(),
- * then it is the client program's responsibility to destroy @ft_face
- * after the #hb_font_t font object has been destroyed.
- *
- * HarfBuzz will use the @destroy callback on the #hb_font_t font object
- * if it is supplied when you use this function. However, even if @destroy
- * is provided, it is the client program's responsibility to destroy @ft_face,
- * and it is the client program's responsibility to ensure that @ft_face is
- * destroyed only after the #hb_font_t font object has been destroyed.
- *
- * Return value: (transfer full): the new #hb_font_t font object
- *
- * Since: 0.9.2
- **/
-hb_font_t *
-hb_ft_font_create (FT_Face ft_face,
- hb_destroy_func_t destroy)
-{
- hb_font_t *font;
- hb_face_t *face;
-
- face = hb_ft_face_create (ft_face, destroy);
- font = hb_font_create (face);
- hb_face_destroy (face);
- _hb_ft_font_set_funcs (font, ft_face, false);
- hb_ft_font_changed (font);
- return font;
-}
-
-/**
- * hb_ft_font_has_changed:
- * @font: #hb_font_t to work upon
- *
- * Refreshes the state of @font when the underlying FT_Face has changed.
- * This function should be called after changing the size or
- * variation-axis settings on the FT_Face.
- *
- * Since: 1.0.5
- **/
-void
-hb_ft_font_changed (hb_font_t *font)
-{
- if (font->destroy != (hb_destroy_func_t) _hb_ft_font_destroy)
- return;
-
- hb_ft_font_t *ft_font = (hb_ft_font_t *) font->user_data;
-
- FT_Face ft_face = ft_font->ft_face;
-
- hb_font_set_scale (font,
- (int) (((uint64_t) ft_face->size->metrics.x_scale * (uint64_t) ft_face->units_per_EM + (1u<<15)) >> 16),
- (int) (((uint64_t) ft_face->size->metrics.y_scale * (uint64_t) ft_face->units_per_EM + (1u<<15)) >> 16));
-#if 0 /* hb-ft works in no-hinting model */
- hb_font_set_ppem (font,
- ft_face->size->metrics.x_ppem,
- ft_face->size->metrics.y_ppem);
-#endif
-
-#if defined(HAVE_FT_GET_VAR_BLEND_COORDINATES) && !defined(HB_NO_VAR)
- FT_MM_Var *mm_var = nullptr;
- if (!FT_Get_MM_Var (ft_face, &mm_var))
- {
- FT_Fixed *ft_coords = (FT_Fixed *) calloc (mm_var->num_axis, sizeof (FT_Fixed));
- int *coords = (int *) calloc (mm_var->num_axis, sizeof (int));
- if (coords && ft_coords)
- {
- if (!FT_Get_Var_Blend_Coordinates (ft_face, mm_var->num_axis, ft_coords))
- {
- bool nonzero = false;
-
- for (unsigned int i = 0; i < mm_var->num_axis; ++i)
- {
- coords[i] = ft_coords[i] >>= 2;
- nonzero = nonzero || coords[i];
- }
-
- if (nonzero)
- hb_font_set_var_coords_normalized (font, coords, mm_var->num_axis);
- else
- hb_font_set_var_coords_normalized (font, nullptr, 0);
- }
- }
- free (coords);
- free (ft_coords);
-#ifdef HAVE_FT_DONE_MM_VAR
- FT_Done_MM_Var (ft_face->glyph->library, mm_var);
-#else
- free (mm_var);
-#endif
- }
-#endif
-}
-
-/**
- * hb_ft_font_create_referenced:
- * @ft_face: FT_Face to work upon
- *
- * Creates an #hb_font_t font object from the specified FT_Face.
- *
- * <note>Note: You must set the face size on @ft_face before calling
- * hb_ft_font_create_references() on it. Otherwise, HarfBuzz will not pick up
- * the face size.</note>
- *
- * This is the preferred variant of the hb_ft_font_create*
- * function family, because it calls FT_Reference_Face() on @ft_face,
- * ensuring that @ft_face remains alive as long as the resulting
- * #hb_font_t font object remains alive.
- *
- * Use this version unless you know you have good reasons not to.
- *
- * Return value: (transfer full): the new #hb_font_t font object
- *
- * Since: 0.9.38
- **/
-hb_font_t *
-hb_ft_font_create_referenced (FT_Face ft_face)
-{
- FT_Reference_Face (ft_face);
- return hb_ft_font_create (ft_face, _hb_ft_face_destroy);
-}
-
-#if HB_USE_ATEXIT
-static void free_static_ft_library ();
-#endif
-
-static struct hb_ft_library_lazy_loader_t : hb_lazy_loader_t<hb_remove_pointer<FT_Library>,
- hb_ft_library_lazy_loader_t>
-{
- static FT_Library create ()
- {
- FT_Library l;
- if (FT_Init_FreeType (&l))
- return nullptr;
-
-#if HB_USE_ATEXIT
- atexit (free_static_ft_library);
-#endif
-
- return l;
- }
- static void destroy (FT_Library l)
- {
- FT_Done_FreeType (l);
- }
- static FT_Library get_null ()
- {
- return nullptr;
- }
-} static_ft_library;
-
-#if HB_USE_ATEXIT
-static
-void free_static_ft_library ()
-{
- static_ft_library.free_instance ();
-}
-#endif
-
-static FT_Library
-get_ft_library ()
-{
- return static_ft_library.get_unconst ();
-}
-
-static void
-_release_blob (FT_Face ft_face)
-{
- hb_blob_destroy ((hb_blob_t *) ft_face->generic.data);
-}
-
-/**
- * hb_ft_font_set_funcs:
- * @font: #hb_font_t to work upon
- *
- * Configures the font-functions structure of the specified
- * #hb_font_t font object to use FreeType font functions.
- *
- * In particular, you can use this function to configure an
- * existing #hb_face_t face object for use with FreeType font
- * functions even if that #hb_face_t face object was initially
- * created with hb_face_create(), and therefore was not
- * initially configured to use FreeType font functions.
- *
- * An #hb_face_t face object created with hb_ft_face_create()
- * is preconfigured for FreeType font functions and does not
- * require this function to be used.
- *
- * <note>Note: Internally, this function creates an FT_Face.
-* </note>
- *
- * Since: 1.0.5
- **/
-void
-hb_ft_font_set_funcs (hb_font_t *font)
-{
- hb_blob_t *blob = hb_face_reference_blob (font->face);
- unsigned int blob_length;
- const char *blob_data = hb_blob_get_data (blob, &blob_length);
- if (unlikely (!blob_length))
- DEBUG_MSG (FT, font, "Font face has empty blob");
-
- FT_Face ft_face = nullptr;
- FT_Error err = FT_New_Memory_Face (get_ft_library (),
- (const FT_Byte *) blob_data,
- blob_length,
- hb_face_get_index (font->face),
- &ft_face);
-
- if (unlikely (err)) {
- hb_blob_destroy (blob);
- DEBUG_MSG (FT, font, "Font face FT_New_Memory_Face() failed");
- return;
- }
-
- if (FT_Select_Charmap (ft_face, FT_ENCODING_MS_SYMBOL))
- FT_Select_Charmap (ft_face, FT_ENCODING_UNICODE);
-
- FT_Set_Char_Size (ft_face,
- abs (font->x_scale), abs (font->y_scale),
- 0, 0);
-#if 0
- font->x_ppem * 72 * 64 / font->x_scale,
- font->y_ppem * 72 * 64 / font->y_scale);
-#endif
- if (font->x_scale < 0 || font->y_scale < 0)
- {
- FT_Matrix matrix = { font->x_scale < 0 ? -1 : +1, 0,
- 0, font->y_scale < 0 ? -1 : +1};
- FT_Set_Transform (ft_face, &matrix, nullptr);
- }
-
-#if defined(HAVE_FT_GET_VAR_BLEND_COORDINATES) && !defined(HB_NO_VAR)
- unsigned int num_coords;
- const int *coords = hb_font_get_var_coords_normalized (font, &num_coords);
- if (num_coords)
- {
- FT_Fixed *ft_coords = (FT_Fixed *) calloc (num_coords, sizeof (FT_Fixed));
- if (ft_coords)
- {
- for (unsigned int i = 0; i < num_coords; i++)
- ft_coords[i] = coords[i] * 4;
- FT_Set_Var_Blend_Coordinates (ft_face, num_coords, ft_coords);
- free (ft_coords);
- }
- }
-#endif
-
- ft_face->generic.data = blob;
- ft_face->generic.finalizer = (FT_Generic_Finalizer) _release_blob;
-
- _hb_ft_font_set_funcs (font, ft_face, true);
- hb_ft_font_set_load_flags (font, FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING);
-}
-
-
-#endif