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Differential D16174 Diff 56569 source/blender/blenkernel/intern/vfontdata_freetype.c

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source/blender/blenkernel/intern/vfontdata_freetype.c

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/* Read the char */ /* Read the char */
che = freetypechar_to_vchar(face, charcode, vfont->data); che = freetypechar_to_vchar(face, charcode, vfont->data);
/* And everything went ok */ /* And everything went ok */
return che; return che;
} }
static VFontData *objfnt_to_ftvfontdata(PackedFile *pf) static FT_Face vfont_face_load_from_packed_file(PackedFile *pf)
campbellbartonUnsubmitted
Done
Inline Actions

Prefer a more descriptive name vfont_face_load_from_packed_file.

campbellbarton: Prefer a more descriptive name `vfont_face_load_from_packed_file`.
{ {
/* Variables */ FT_Face face = NULL;
FT_Face face; FT_New_Memory_Face(library, pf->data, pf->size, 0, &face);
VFontData *vfd; if (!face) {
campbellbartonUnsubmitted
Done
Inline Actions

The NULL check doesn't seem necessary (it's not in the previous code, and if it _is_ null, FT_Init_FreeType/FT_Done_FreeType is unnecessary overhead).

Think it's fine to simply not check for NULL.

campbellbarton: The NULL check doesn't seem necessary (it's not in the previous code, and if it _is_ null…
/* load the freetype font */
err = FT_New_Memory_Face(library, pf->data, pf->size, 0, &face);
if (err) {
return NULL; return NULL;
} }
/* allocate blender font */ /* Font must contain vectors, not bitmaps. */
vfd = MEM_callocN(sizeof(*vfd), "FTVFontData"); if (!(face->face_flags & FT_FACE_FLAG_SCALABLE)) {
FT_Done_Face(face);
/* Get the name. */ return NULL;
if (face->family_name) {
BLI_snprintf(vfd->name, sizeof(vfd->name), "%s %s", face->family_name, face->style_name);
BLI_str_utf8_invalid_strip(vfd->name, strlen(vfd->name));
} }
/* Select a character map. */ /* Select a character map. */
err = FT_Select_Charmap(face, FT_ENCODING_UNICODE); FT_Error err = FT_Select_Charmap(face, FT_ENCODING_UNICODE);
if (err) { if (err) {
err = FT_Select_Charmap(face, FT_ENCODING_APPLE_ROMAN); err = FT_Select_Charmap(face, FT_ENCODING_APPLE_ROMAN);
} }
if (err && face->num_charmaps > 0) { if (err && face->num_charmaps > 0) {
err = FT_Select_Charmap(face, face->charmaps[0]->encoding); err = FT_Select_Charmap(face, face->charmaps[0]->encoding);
} }
if (err) { if (err) {
FT_Done_Face(face); FT_Done_Face(face);
MEM_freeN(vfd);
return NULL; return NULL;
} }
/* Test that we can load glyphs from this font. */
FT_UInt glyph_index = 0;
FT_Get_First_Char(face, &glyph_index);
if (!glyph_index ||
FT_Load_Glyph(face, glyph_index, FT_LOAD_NO_SCALE | FT_LOAD_NO_BITMAP) != FT_Err_Ok) {
FT_Done_Face(face);
return NULL;
}
return face;
}
VFontData *BKE_vfontdata_from_freetypefont(PackedFile *pf)
{
if (FT_Init_FreeType(&library) != FT_Err_Ok) {
return NULL;
}
FT_Face face = vfont_face_load_from_packed_file(pf);
if (!face) {
FT_Done_FreeType(library);
return NULL;
}
/* allocate blender font */
VFontData *vfd = MEM_callocN(sizeof(*vfd), "FTVFontData");
/* Get the name. */
if (face->family_name) {
BLI_snprintf(vfd->name, sizeof(vfd->name), "%s %s", face->family_name, face->style_name);
BLI_str_utf8_invalid_strip(vfd->name, strlen(vfd->name));
}
/* Blender default BFont is not "complete". */ /* Blender default BFont is not "complete". */
const bool complete_font = (face->ascender != 0) && (face->descender != 0) && const bool complete_font = (face->ascender != 0) && (face->descender != 0) &&
(face->ascender != face->descender); (face->ascender != face->descender);
if (complete_font) { if (complete_font) {
/* We can get descender as well, but we simple store descender in relation to the ascender. /* We can get descender as well, but we simple store descender in relation to the ascender.
* Also note that descender is stored as a negative number. */ * Also note that descender is stored as a negative number. */
vfd->ascender = (float)face->ascender / (face->ascender - face->descender); vfd->ascender = (float)face->ascender / (face->ascender - face->descender);
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for (int i = 0; i < preload_count; i++) { for (int i = 0; i < preload_count; i++) {
charcode = FT_Get_Next_Char(face, charcode, &glyph_index); charcode = FT_Get_Next_Char(face, charcode, &glyph_index);
if (!charcode || !glyph_index) { if (!charcode || !glyph_index) {
break; break;
} }
freetypechar_to_vchar(face, charcode, vfd); freetypechar_to_vchar(face, charcode, vfd);
} }
return vfd;
}
static bool check_freetypefont(PackedFile *pf)
{
FT_Face face = NULL;
FT_UInt glyph_index = 0;
bool success = false;
err = FT_New_Memory_Face(library, pf->data, pf->size, 0, &face);
if (err) {
return false;
// XXX error("This is not a valid font");
}
FT_Get_First_Char(face, &glyph_index);
if (glyph_index) {
err = FT_Load_Glyph(face, glyph_index, FT_LOAD_NO_SCALE | FT_LOAD_NO_BITMAP);
if (!err) {
success = (face->glyph->format == ft_glyph_format_outline);
}
}
FT_Done_Face(face);
return success;
}
VFontData *BKE_vfontdata_from_freetypefont(PackedFile *pf)
{
VFontData *vfd = NULL;
/* init Freetype */
err = FT_Init_FreeType(&library);
if (err) {
/* XXX error("Failed to load the Freetype font library"); */
return NULL;
}
if (check_freetypefont(pf)) {
vfd = objfnt_to_ftvfontdata(pf);
}
/* free Freetype */
FT_Done_FreeType(library); FT_Done_FreeType(library);
return vfd; return vfd;
} }
static void *vfontdata_copy_characters_value_cb(const void *src) static void *vfontdata_copy_characters_value_cb(const void *src)
{ {
return BKE_vfontdata_char_copy(src); return BKE_vfontdata_char_copy(src);
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