/*
* Copyright © 2009 Red Hat, Inc.
* Copyright © 2009 Keith Stribley
+ * Copyright © 2015 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Red Hat Author(s): Behdad Esfahbod
+ * Google Author(s): Behdad Esfahbod
*/
#include "hb-private.hh"
+#include "hb-debug.hh"
#include "hb-ft.h"
#include "hb-font-private.hh"
#include FT_ADVANCES_H
+#include FT_MULTIPLE_MASTERS_H
#include FT_TRUETYPE_TABLES_H
-
-#ifndef HB_DEBUG_FT
-#define HB_DEBUG_FT (HB_DEBUG+0)
-#endif
-
-
/* TODO:
*
* In general, this file does a fine job of what it's supposed to do.
* There are, however, things that need more work:
*
- * - We don't handle any load_flags. That definitely has API implications. :(
- * I believe hb_ft_font_create() should take load_flags input.
- * In particular, FT_Get_Advance() without the NO_HINTING flag seems to be
- * buggy.
+ * - I remember seeing FT_Get_Advance() without the NO_HINTING flag to be buggy.
+ * Have not investigated.
+ *
+ * - 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, like we do in uniscribe, etc.
*
* - We don't handle / allow for emboldening / obliqueing.
*
- * - Rounding, etc?
+ * - In the future, we should add constructors to create fonts in font space?
+ *
+ * - FT_Load_Glyph() is extremely costly. Do something about it?
+ */
+
+
+struct hb_ft_font_t
+{
+ FT_Face ft_face;
+ int load_flags;
+ bool symbol; /* Whether selected cmap is symbol cmap. */
+ bool unref; /* Whether to destroy ft_face when done. */
+};
+
+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->ft_face = ft_face;
+ ft_font->symbol = symbol;
+ ft_font->unref = unref;
+
+ ft_font->load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING;
+
+ 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;
+
+ if (ft_font->unref)
+ _hb_ft_face_destroy (ft_font->ft_face);
+
+ free (ft_font);
+}
+
+/**
+ * hb_ft_font_set_load_flags:
+ * @font:
+ * @load_flags:
*
- * - In the future, we should add constructors to create fonts in font space.
+ *
*
- * - I believe transforms are not correctly implemented. FreeType does not
- * provide any API to get to the transform/delta set on the face. :(
+ * Since: 1.0.5
+ **/
+void
+hb_ft_font_set_load_flags (hb_font_t *font, int load_flags)
+{
+ if (font->immutable)
+ return;
+
+ if (font->destroy != _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:
*
- * - Always use FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH?
+ *
*
- * - FT_Load_Glyph() is exteremely costly. Do something about it?
- */
+ * Return value:
+ * Since: 1.0.5
+ **/
+int
+hb_ft_font_get_load_flags (hb_font_t *font)
+{
+ if (font->destroy != _hb_ft_font_destroy)
+ return 0;
+ const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data;
-static hb_bool_t
-hb_ft_get_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)
+ return ft_font->load_flags;
+}
+FT_Face
+hb_ft_font_get_face (hb_font_t *font)
{
- FT_Face ft_face = (FT_Face) font_data;
+ if (font->destroy != _hb_ft_font_destroy)
+ return nullptr;
-#ifdef HAVE_FT_FACE_GETCHARVARIANTINDEX
- if (unlikely (variation_selector)) {
- *glyph = FT_Face_GetCharVariantIndex (ft_face, unicode, variation_selector);
- if (*glyph)
- return true;
+ const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font->user_data;
+
+ return ft_font->ft_face;
+}
+
+
+
+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;
+ 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:
+ * http://www.microsoft.com/typography/otspec/recom.htm
+ * under "Non-Standard (Symbol) Fonts". */
+ g = FT_Get_Char_Index (ft_font->ft_face, 0xF000u + unicode);
+ if (!g)
+ return false;
+ }
+ else
+ return false;
}
-#endif
- *glyph = FT_Get_Char_Index (ft_face, unicode);
- return *glyph != 0;
+ *glyph = g;
+ return true;
+}
+
+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;
+ unsigned int g = FT_Face_GetCharVariantIndex (ft_font->ft_face, unicode, variation_selector);
+
+ if (unlikely (!g))
+ return false;
+
+ *glyph = g;
+ return true;
}
static hb_position_t
hb_codepoint_t glyph,
void *user_data HB_UNUSED)
{
- FT_Face ft_face = (FT_Face) font_data;
- int load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING;
+ const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
FT_Fixed v;
- if (unlikely (FT_Get_Advance (ft_face, glyph, load_flags, &v)))
+ if (unlikely (FT_Get_Advance (ft_font->ft_face, glyph, ft_font->load_flags, &v)))
return 0;
- return v >> 10;
+ if (font->x_scale < 0)
+ v = -v;
+
+ return (v + (1<<9)) >> 10;
}
static hb_position_t
hb_codepoint_t glyph,
void *user_data HB_UNUSED)
{
- FT_Face ft_face = (FT_Face) font_data;
- int load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING | FT_LOAD_VERTICAL_LAYOUT;
+ const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
FT_Fixed v;
- if (unlikely (FT_Get_Advance (ft_face, glyph, load_flags, &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 >> 10;
-}
-
-static hb_bool_t
-hb_ft_get_glyph_h_origin (hb_font_t *font HB_UNUSED,
- void *font_data HB_UNUSED,
- hb_codepoint_t glyph HB_UNUSED,
- hb_position_t *x HB_UNUSED,
- hb_position_t *y HB_UNUSED,
- void *user_data HB_UNUSED)
-{
- /* We always work in the horizontal coordinates. */
- return true;
+ return (-v + (1<<9)) >> 10;
}
static hb_bool_t
hb_position_t *y,
void *user_data HB_UNUSED)
{
- FT_Face ft_face = (FT_Face) font_data;
- int load_flags = FT_LOAD_DEFAULT;
+ const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
+ FT_Face ft_face = ft_font->ft_face;
- if (unlikely (FT_Load_Glyph (ft_face, glyph, load_flags)))
+ 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
*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;
}
hb_codepoint_t right_glyph,
void *user_data HB_UNUSED)
{
- FT_Face ft_face = (FT_Face) font_data;
+ 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_face, left_glyph, right_glyph, mode, &kerningv))
+ if (FT_Get_Kerning (ft_font->ft_face, left_glyph, right_glyph, mode, &kerningv))
return 0;
return kerningv.x;
}
-static hb_position_t
-hb_ft_get_glyph_v_kerning (hb_font_t *font HB_UNUSED,
- void *font_data HB_UNUSED,
- hb_codepoint_t top_glyph HB_UNUSED,
- hb_codepoint_t bottom_glyph HB_UNUSED,
- void *user_data HB_UNUSED)
-{
- /* FreeType API doesn't support vertical kerning */
- return 0;
-}
-
static hb_bool_t
hb_ft_get_glyph_extents (hb_font_t *font HB_UNUSED,
void *font_data,
hb_glyph_extents_t *extents,
void *user_data HB_UNUSED)
{
- FT_Face ft_face = (FT_Face) font_data;
- int load_flags = FT_LOAD_DEFAULT;
+ const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
+ FT_Face ft_face = ft_font->ft_face;
- if (unlikely (FT_Load_Glyph (ft_face, glyph, load_flags)))
+ 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;
}
hb_position_t *y,
void *user_data HB_UNUSED)
{
- FT_Face ft_face = (FT_Face) font_data;
- int load_flags = FT_LOAD_DEFAULT;
+ const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
+ FT_Face ft_face = ft_font->ft_face;
- if (unlikely (FT_Load_Glyph (ft_face, glyph, load_flags)))
+ if (unlikely (FT_Load_Glyph (ft_face, glyph, ft_font->load_flags)))
return false;
if (unlikely (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE))
char *name, unsigned int size,
void *user_data HB_UNUSED)
{
- FT_Face ft_face = (FT_Face) font_data;
+ const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
- hb_bool_t ret = !FT_Get_Glyph_Name (ft_face, glyph, name, size);
- if (!ret || (size && !*name))
- snprintf (name, size, "gid%u", glyph);
+ hb_bool_t ret = !FT_Get_Glyph_Name (ft_font->ft_face, glyph, name, size);
+ if (ret && (size && !*name))
+ ret = false;
return ret;
}
hb_codepoint_t *glyph,
void *user_data HB_UNUSED)
{
- FT_Face ft_face = (FT_Face) font_data;
+ const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
+ FT_Face ft_face = ft_font->ft_face;
if (len < 0)
*glyph = FT_Get_Name_Index (ft_face, (FT_String *) name);
*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;
+ FT_Face ft_face = ft_font->ft_face;
+ metrics->ascender = ft_face->size->metrics.ascender;
+ metrics->descender = ft_face->size->metrics.descender;
+ metrics->line_gap = ft_face->size->metrics.height - (ft_face->size->metrics.ascender - ft_face->size->metrics.descender);
+ if (font->y_scale < 0)
+ {
+ metrics->ascender = -metrics->ascender;
+ metrics->descender = -metrics->descender;
+ metrics->line_gap = -metrics->line_gap;
+ }
+ return true;
+}
+
+static hb_font_funcs_t *static_ft_funcs = nullptr;
-static hb_font_funcs_t *
-_hb_ft_get_font_funcs (void)
+#ifdef HB_USE_ATEXIT
+static
+void free_static_ft_funcs (void)
{
- static const hb_font_funcs_t ft_ffuncs = {
- HB_OBJECT_HEADER_STATIC,
+ hb_font_funcs_destroy (static_ft_funcs);
+}
+#endif
- true, /* immutable */
+static void
+_hb_ft_font_set_funcs (hb_font_t *font, FT_Face ft_face, bool unref)
+{
+retry:
+ hb_font_funcs_t *funcs = (hb_font_funcs_t *) hb_atomic_ptr_get (&static_ft_funcs);
- {
-#define HB_FONT_FUNC_IMPLEMENT(name) hb_ft_get_##name,
- HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
-#undef HB_FONT_FUNC_IMPLEMENT
+ if (unlikely (!funcs))
+ {
+ 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_variation_glyph_func (funcs, hb_ft_get_variation_glyph, nullptr, nullptr);
+ hb_font_funcs_set_glyph_h_advance_func (funcs, hb_ft_get_glyph_h_advance, 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);
+ hb_font_funcs_set_glyph_h_kerning_func (funcs, hb_ft_get_glyph_h_kerning, nullptr, nullptr);
+ //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_atomic_ptr_cmpexch (&static_ft_funcs, nullptr, funcs)) {
+ hb_font_funcs_destroy (funcs);
+ goto retry;
}
+
+#ifdef HB_USE_ATEXIT
+ atexit (free_static_ft_funcs); /* First person registers atexit() callback. */
+#endif
};
- return const_cast<hb_font_funcs_t *> (&ft_ffuncs);
+ bool symbol = ft_face->charmap && ft_face->charmap->encoding == FT_ENCODING_MS_SYMBOL;
+
+ hb_font_set_funcs (font,
+ funcs,
+ _hb_ft_font_create (ft_face, symbol, unref),
+ _hb_ft_font_destroy);
}
/* Note: FreeType like HarfBuzz uses the NONE tag for fetching the entire blob */
- error = FT_Load_Sfnt_Table (ft_face, tag, 0, NULL, &length);
+ error = FT_Load_Sfnt_Table (ft_face, tag, 0, nullptr, &length);
if (error)
- return NULL;
+ return nullptr;
buffer = (FT_Byte *) malloc (length);
- if (buffer == NULL)
- return NULL;
+ if (!buffer)
+ return nullptr;
error = FT_Load_Sfnt_Table (ft_face, tag, 0, buffer, &length);
if (error)
- return NULL;
+ 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):
+ * @destroy:
+ *
+ *
+ *
+ * Return value: (transfer full):
+ * 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 == NULL) {
+ 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,
- /* TODO: We assume that it's mmap()'ed, but FreeType code
- * suggests that there are cases we reach here but font is
- * not mmapped. For example, when mmap() fails. No idea
- * how to deal with it better here. */
- HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE,
+ HB_MEMORY_MODE_READONLY,
ft_face, destroy);
face = hb_face_create (blob, ft_face->face_index);
hb_blob_destroy (blob);
return face;
}
+/**
+ * hb_ft_face_create_referenced:
+ * @ft_face:
+ *
+ *
+ *
+ * Return value: (transfer full):
+ * 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:
+ *
+ *
+ *
+ * Return value: (transfer full):
+ * Since: 0.9.2
+ **/
hb_face_t *
hb_ft_face_create_cached (FT_Face ft_face)
{
if (ft_face->generic.finalizer)
ft_face->generic.finalizer (ft_face);
- ft_face->generic.data = hb_ft_face_create (ft_face, NULL);
+ 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);
}
-static void
-_do_nothing (void)
-{
-}
-
+/**
+ * hb_ft_font_create:
+ * @ft_face: (destroy destroy) (scope notified):
+ * @destroy:
+ *
+ *
+ *
+ * Return value: (transfer full):
+ * Since: 0.9.2
+ **/
hb_font_t *
hb_ft_font_create (FT_Face ft_face,
hb_destroy_func_t destroy)
face = hb_ft_face_create (ft_face, destroy);
font = hb_font_create (face);
hb_face_destroy (face);
- hb_font_set_funcs (font,
- _hb_ft_get_font_funcs (),
- ft_face, (hb_destroy_func_t) _do_nothing);
+ _hb_ft_font_set_funcs (font, ft_face, false);
+ hb_ft_font_changed (font);
+ return font;
+}
+
+void
+hb_ft_font_changed (hb_font_t *font)
+{
+ if (font->destroy != _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,
- ((uint64_t) ft_face->size->metrics.x_scale * (uint64_t) ft_face->units_per_EM) >> 16,
- ((uint64_t) ft_face->size->metrics.y_scale * (uint64_t) ft_face->units_per_EM) >> 16);
+ (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
- return font;
+#ifdef HAVE_FT_GET_VAR_BLEND_COORDINATES
+ 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:
+ *
+ *
+ *
+ * Return value: (transfer full):
+ * 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);
}
static FT_Library ft_library;
+#ifdef HB_USE_ATEXIT
static
void free_ft_library (void)
{
FT_Done_FreeType (ft_library);
}
+#endif
static FT_Library
get_ft_library (void)
{
/* Not found; allocate one. */
if (FT_Init_FreeType (&library))
- return NULL;
+ return nullptr;
- if (!hb_atomic_ptr_cmpexch (&ft_library, NULL, library)) {
+ if (!hb_atomic_ptr_cmpexch (&ft_library, nullptr, library)) {
FT_Done_FreeType (library);
goto retry;
}
-#ifdef HAVE_ATEXIT
+#ifdef HB_USE_ATEXIT
atexit (free_ft_library); /* First person registers atexit() callback. */
#endif
}
if (unlikely (!blob_length))
DEBUG_MSG (FT, font, "Font face has empty blob");
- FT_Face ft_face = NULL;
+ FT_Face ft_face = nullptr;
FT_Error err = FT_New_Memory_Face (get_ft_library (),
(const FT_Byte *) blob_data,
blob_length,
return;
}
- FT_Select_Charmap (ft_face, FT_ENCODING_UNICODE);
+ if (FT_Select_Charmap (ft_face, FT_ENCODING_UNICODE))
+ FT_Select_Charmap (ft_face, FT_ENCODING_MS_SYMBOL);
- assert (font->y_scale >= 0);
FT_Set_Char_Size (ft_face,
- font->x_scale, font->y_scale,
+ 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);
+ }
+
+#ifdef HAVE_FT_SET_VAR_BLEND_COORDINATES
+ 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] << 2;
+ 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_font_set_funcs (font,
- _hb_ft_get_font_funcs (),
- ft_face,
- (hb_destroy_func_t) FT_Done_Face);
-}
-
-FT_Face
-hb_ft_font_get_face (hb_font_t *font)
-{
- if (font->destroy == (hb_destroy_func_t) FT_Done_Face ||
- font->destroy == (hb_destroy_func_t) _do_nothing)
- return (FT_Face) font->user_data;
-
- return NULL;
+ _hb_ft_font_set_funcs (font, ft_face, true);
+ hb_ft_font_set_load_flags (font, FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING);
}
projects / platform / upstream / harfbuzz.git / blobdiff