diff options
Diffstat (limited to 'source/blender/blenfont/intern/blf_font.c')
| -rw-r--r-- | source/blender/blenfont/intern/blf_font.c | 201 |
1 files changed, 141 insertions, 60 deletions
diff --git a/source/blender/blenfont/intern/blf_font.c b/source/blender/blenfont/intern/blf_font.c index 038e73cc928..eb974f33994 100644 --- a/source/blender/blenfont/intern/blf_font.c +++ b/source/blender/blenfont/intern/blf_font.c @@ -18,8 +18,9 @@ #include FT_FREETYPE_H #include FT_GLYPH_H -#include FT_TRUETYPE_TABLES_H /* For TT_OS2 */ #include FT_MULTIPLE_MASTERS_H /* Variable font support. */ +#include FT_TRUETYPE_IDS_H /* Codepoint coverage constants. */ +#include FT_TRUETYPE_TABLES_H /* For TT_OS2 */ #include "MEM_guardedalloc.h" @@ -28,6 +29,7 @@ #include "BLI_listbase.h" #include "BLI_math.h" #include "BLI_math_color_blend.h" +#include "BLI_path_util.h" #include "BLI_rect.h" #include "BLI_string.h" #include "BLI_string_utf8.h" @@ -836,7 +838,7 @@ static void blf_font_boundbox_foreach_glyph_ex(FontBLF *font, size_t i = 0, i_curr; rcti gbox_px; - if (str_len == 0) { + if (str_len == 0 || str[0] == 0) { /* early output. */ return; } @@ -1157,7 +1159,7 @@ int blf_font_ascender(FontBLF *font) char *blf_display_name(FontBLF *font) { - if (!font->face->family_name) { + if (!blf_ensure_face(font) || !font->face->family_name) { return NULL; } return BLI_sprintfN("%s %s", font->face->family_name, font->face->style_name); @@ -1244,14 +1246,28 @@ static void blf_font_fill(FontBLF *font) font->glyph_cache_mutex = &blf_glyph_cache_mutex; } -FontBLF *blf_font_new(const char *name, const char *filepath) +/** + * Create an FT_Face for this font if not already existing. + */ +bool blf_ensure_face(FontBLF *font) { - FontBLF *font; + if (font->face) { + return true; + } + + if (font->flags & BLF_BAD_FONT) { + return false; + } + FT_Error err; - char *mfile; - font = (FontBLF *)MEM_callocN(sizeof(FontBLF), "blf_font_new"); - err = FT_New_Face(ft_lib, filepath, 0, &font->face); + if (font->filepath) { + err = FT_New_Face(ft_lib, font->filepath, 0, &font->face); + } + if (font->mem) { + err = FT_New_Memory_Face(ft_lib, font->mem, (FT_Long)font->mem_size, 0, &font->face); + } + if (err) { if (ELEM(err, FT_Err_Unknown_File_Format, FT_Err_Unimplemented_Feature)) { printf("Format of this font file is not supported\n"); @@ -1259,8 +1275,8 @@ FontBLF *blf_font_new(const char *name, const char *filepath) else { printf("Error encountered while opening font file\n"); } - MEM_freeN(font); - return NULL; + font->flags |= BLF_BAD_FONT; + return false; } err = FT_Select_Charmap(font->face, FT_ENCODING_UNICODE); @@ -1272,28 +1288,28 @@ FontBLF *blf_font_new(const char *name, const char *filepath) } if (err) { printf("Can't set a character map!\n"); - FT_Done_Face(font->face); - MEM_freeN(font); - return NULL; + font->flags |= BLF_BAD_FONT; + return false; } - mfile = blf_dir_metrics_search(filepath); - if (mfile) { - err = FT_Attach_File(font->face, mfile); - if (err) { - fprintf(stderr, "FT_Attach_File failed to load '%s' with error %d\n", filepath, (int)err); + if (font->filepath) { + char *mfile = blf_dir_metrics_search(font->filepath); + if (mfile) { + err = FT_Attach_File(font->face, mfile); + if (err) { + fprintf(stderr, + "FT_Attach_File failed to load '%s' with error %d\n", + font->filepath, + (int)err); + } + MEM_freeN(mfile); } - MEM_freeN(mfile); } if (FT_HAS_MULTIPLE_MASTERS(font->face)) { FT_Get_MM_Var(font->face, &(font->variations)); } - font->name = BLI_strdup(name); - font->filepath = BLI_strdup(filepath); - blf_font_fill(font); - /* Save TrueType table with bits to quickly test most unicode block coverage. */ TT_OS2 *os2_table = (TT_OS2 *)FT_Get_Sfnt_Table(font->face, FT_SFNT_OS2); if (os2_table) { @@ -1303,17 +1319,11 @@ FontBLF *blf_font_new(const char *name, const char *filepath) font->UnicodeRanges[3] = (uint)os2_table->ulUnicodeRange4; } - /* Detect "Last resort" fonts. They have everything. Usually except last 5 bits. */ - if (font->UnicodeRanges[0] == 0xffffffffU && font->UnicodeRanges[1] == 0xffffffffU && - font->UnicodeRanges[2] == 0xffffffffU && font->UnicodeRanges[3] >= 0x7FFFFFFU) { - font->flags |= BLF_LAST_RESORT; - } - if (FT_IS_FIXED_WIDTH(font->face)) { font->flags |= BLF_MONOSPACED; } - if (FT_HAS_KERNING(font->face)) { + if (FT_HAS_KERNING(font->face) && !font->kerning_cache) { /* Create kerning cache table and fill with value indicating "unset". */ font->kerning_cache = MEM_mallocN(sizeof(KerningCacheBLF), __func__); for (uint i = 0; i < KERNING_CACHE_TABLE_SIZE; i++) { @@ -1323,49 +1333,114 @@ FontBLF *blf_font_new(const char *name, const char *filepath) } } - return font; + return true; } -void blf_font_attach_from_mem(FontBLF *font, const unsigned char *mem, int mem_size) +typedef struct eFaceDetails { + char name[50]; + unsigned int coverage1; + unsigned int coverage2; + unsigned int coverage3; + unsigned int coverage4; +} eFaceDetails; + +/* Details about the fallback fonts we ship, so that we can load only when needed. */ +static const eFaceDetails static_face_details[] = { + {"lastresort.woff2", UINT32_MAX, UINT32_MAX, UINT32_MAX, UINT32_MAX}, + {"Noto Sans CJK Regular.woff2", 0x30000083L, 0x2BDF3C10L, 0x16L, 0}, + {"NotoEmoji-VariableFont_wght.woff2", 0x80000003L, 0x241E4ACL, 0x14000000L, 0x4000000L}, + {"NotoSansArabic-VariableFont_wdth,wght.woff2", TT_UCR_ARABIC, 0, 0, 0}, + {"NotoSansArmenian-VariableFont_wdth,wght.woff2", + TT_UCR_ARMENIAN, + TT_UCR_ALPHABETIC_PRESENTATION_FORMS, + 0, + 0}, + {"NotoSansBengali-VariableFont_wdth,wght.woff2", TT_UCR_BENGALI, 0, 0, 0}, + {"NotoSansDevanagari-Regular.woff2", TT_UCR_DEVANAGARI, 0, 0, 0}, + {"NotoSansEthiopic-Regular.woff2", 0, 0, TT_UCR_ETHIOPIC, 0}, + {"NotoSansGeorgian-VariableFont_wdth,wght.woff2", TT_UCR_GEORGIAN, 0, 0, 0}, + {"NotoSansGujarati-Regular.woff2", TT_UCR_GUJARATI, 0, 0, 0}, + {"NotoSansGurmukhi-VariableFont_wdth,wght.woff2", TT_UCR_GURMUKHI, 0, 0, 0}, + {"NotoSansHebrew-VariableFont_wdth,wght.woff2", TT_UCR_HEBREW, 0, 0, 0}, + {"NotoSansJavanese-Regular.woff2", 0x80000003L, 0x2000L, 0, 0}, + {"NotoSansKannada-VariableFont_wdth,wght.woff2", TT_UCR_KANNADA, 0, 0, 0}, + {"NotoSansMalayalam-VariableFont_wdth,wght.woff2", TT_UCR_MALAYALAM, 0, 0, 0}, + {"NotoSansMath-Regular.woff2", 0, TT_UCR_MATHEMATICAL_OPERATORS, 0, 0}, + {"NotoSansMyanmar-Regular.woff2", 0, 0, TT_UCR_MYANMAR, 0}, + {"NotoSansSymbols-VariableFont_wght.woff2", 0x3L, 0x200E4B4L, 0, 0}, + {"NotoSansSymbols2-Regular.woff2", 0x80000003L, 0x200E3E4L, 0x40020L, 0x580A048L}, + {"NotoSansTamil-VariableFont_wdth,wght.woff2", TT_UCR_TAMIL, 0, 0, 0}, + {"NotoSansTelugu-VariableFont_wdth,wght.woff2", TT_UCR_TELUGU, 0, 0, 0}, + {"NotoSansThai-VariableFont_wdth,wght.woff2", TT_UCR_THAI, 0, 0, 0}, +}; + +/* Create a new font from filename OR from passed memory pointer. */ +static FontBLF *blf_font_new_ex(const char *name, + const char *filepath, + const unsigned char *mem, + const size_t mem_size) { - FT_Open_Args open; + FontBLF *font = (FontBLF *)MEM_callocN(sizeof(FontBLF), "blf_font_new"); - open.flags = FT_OPEN_MEMORY; - open.memory_base = (const FT_Byte *)mem; - open.memory_size = mem_size; - FT_Attach_Stream(font->face, &open); -} - -FontBLF *blf_font_new_from_mem(const char *name, const unsigned char *mem, int mem_size) -{ - FontBLF *font; - FT_Error err; + font->name = BLI_strdup(name); + font->filepath = filepath ? BLI_strdup(filepath) : NULL; + if (mem) { + font->mem = (void *)mem; + font->mem_size = mem_size; + } + blf_font_fill(font); - font = (FontBLF *)MEM_callocN(sizeof(FontBLF), "blf_font_new_from_mem"); - err = FT_New_Memory_Face(ft_lib, mem, mem_size, 0, &font->face); - if (err) { - MEM_freeN(font); - return NULL; + /* If we have static details about this font we don't need to load the Face. */ + const eFaceDetails *static_details = NULL; + char filename[256]; + for (int i = 0; i < (int)ARRAY_SIZE(static_face_details); i++) { + BLI_split_file_part(font->filepath, filename, sizeof(filename)); + if (STREQ(static_face_details[i].name, filename)) { + static_details = &static_face_details[i]; + font->UnicodeRanges[0] = static_details->coverage1; + font->UnicodeRanges[1] = static_details->coverage2; + font->UnicodeRanges[2] = static_details->coverage3; + font->UnicodeRanges[3] = static_details->coverage4; + break; + } } - err = FT_Select_Charmap(font->face, ft_encoding_unicode); - if (err) { - printf("Can't set the unicode character map!\n"); - FT_Done_Face(font->face); - MEM_freeN(font); - return NULL; + if (!static_details) { + if (!blf_ensure_face(font)) { + blf_font_free(font); + return NULL; + } } - if (FT_HAS_MULTIPLE_MASTERS(font->face)) { - FT_Get_MM_Var(font->face, &(font->variations)); + /* Detect "Last resort" fonts. They have everything. Usually except last 5 bits. */ + if (font->UnicodeRanges[0] == 0xffffffffU && font->UnicodeRanges[1] == 0xffffffffU && + font->UnicodeRanges[2] == 0xffffffffU && font->UnicodeRanges[3] >= 0x7FFFFFFU) { + font->flags |= BLF_LAST_RESORT; } - font->name = BLI_strdup(name); - font->filepath = NULL; - blf_font_fill(font); return font; } +FontBLF *blf_font_new(const char *name, const char *filename) +{ + return blf_font_new_ex(name, filename, NULL, 0); +} + +FontBLF *blf_font_new_from_mem(const char *name, const unsigned char *mem, const size_t mem_size) +{ + return blf_font_new_ex(name, NULL, mem, mem_size); +} + +void blf_font_attach_from_mem(FontBLF *font, const unsigned char *mem, const size_t mem_size) +{ + FT_Open_Args open; + + open.flags = FT_OPEN_MEMORY; + open.memory_base = (const FT_Byte *)mem; + open.memory_size = (FT_Long)mem_size; + FT_Attach_Stream(font->face, &open); +} + void blf_font_free(FontBLF *font) { blf_glyph_cache_clear(font); @@ -1378,7 +1453,9 @@ void blf_font_free(FontBLF *font) FT_Done_MM_Var(ft_lib, font->variations); } - FT_Done_Face(font->face); + if (font->face) { + FT_Done_Face(font->face); + } if (font->filepath) { MEM_freeN(font->filepath); } @@ -1396,6 +1473,10 @@ void blf_font_free(FontBLF *font) bool blf_font_size(FontBLF *font, float size, unsigned int dpi) { + if (!blf_ensure_face(font)) { + return false; + } + /* FreeType uses fixed-point integers in 64ths. */ FT_F26Dot6 ft_size = lroundf(size * 64.0f); /* Adjust our new size to be on even 64ths. */ |