| 1 | /* Font backend for the Microsoft Windows API. |
| 2 | Copyright (C) 2007-2014 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GNU Emacs. |
| 5 | |
| 6 | GNU Emacs is free software: you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation, either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | GNU Emacs is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <config.h> |
| 20 | #include <windows.h> |
| 21 | #include <stdio.h> |
| 22 | #include <math.h> |
| 23 | #include <ctype.h> |
| 24 | #include <commdlg.h> |
| 25 | |
| 26 | #include "lisp.h" |
| 27 | #include "w32term.h" |
| 28 | #include "frame.h" |
| 29 | #include "dispextern.h" |
| 30 | #include "character.h" |
| 31 | #include "charset.h" |
| 32 | #include "coding.h" |
| 33 | #include "fontset.h" |
| 34 | #include "font.h" |
| 35 | #include "w32font.h" |
| 36 | #ifdef WINDOWSNT |
| 37 | #include "w32.h" |
| 38 | #endif |
| 39 | |
| 40 | /* Cleartype available on Windows XP, cleartype_natural from XP SP1. |
| 41 | The latter does not try to fit cleartype smoothed fonts into the |
| 42 | same bounding box as the non-antialiased version of the font. |
| 43 | */ |
| 44 | #ifndef CLEARTYPE_QUALITY |
| 45 | #define CLEARTYPE_QUALITY 5 |
| 46 | #endif |
| 47 | #ifndef CLEARTYPE_NATURAL_QUALITY |
| 48 | #define CLEARTYPE_NATURAL_QUALITY 6 |
| 49 | #endif |
| 50 | |
| 51 | /* VIETNAMESE_CHARSET and JOHAB_CHARSET are not defined in some versions |
| 52 | of MSVC headers. */ |
| 53 | #ifndef VIETNAMESE_CHARSET |
| 54 | #define VIETNAMESE_CHARSET 163 |
| 55 | #endif |
| 56 | #ifndef JOHAB_CHARSET |
| 57 | #define JOHAB_CHARSET 130 |
| 58 | #endif |
| 59 | |
| 60 | Lisp_Object Qgdi; |
| 61 | Lisp_Object Quniscribe; |
| 62 | static Lisp_Object QCformat; |
| 63 | static Lisp_Object Qmonospace, Qsansserif, Qmono, Qsans, Qsans_serif; |
| 64 | static Lisp_Object Qserif, Qscript, Qdecorative; |
| 65 | static Lisp_Object Qraster, Qoutline, Qunknown; |
| 66 | |
| 67 | /* antialiasing */ |
| 68 | static Lisp_Object Qstandard, Qsubpixel, Qnatural; |
| 69 | |
| 70 | /* languages */ |
| 71 | static Lisp_Object Qzh; |
| 72 | |
| 73 | /* scripts */ |
| 74 | static Lisp_Object Qgreek, Qcoptic, Qcyrillic, Qarmenian, Qhebrew; |
| 75 | static Lisp_Object Qarabic, Qsyriac, Qnko, Qthaana, Qdevanagari, Qbengali; |
| 76 | static Lisp_Object Qgurmukhi, Qgujarati, Qoriya, Qtamil, Qtelugu; |
| 77 | static Lisp_Object Qkannada, Qmalayalam, Qsinhala, Qthai, Qlao; |
| 78 | static Lisp_Object Qtibetan, Qmyanmar, Qgeorgian, Qhangul, Qethiopic; |
| 79 | static Lisp_Object Qcherokee, Qcanadian_aboriginal, Qogham, Qrunic; |
| 80 | static Lisp_Object Qkhmer, Qmongolian, Qbraille, Qhan; |
| 81 | static Lisp_Object Qideographic_description, Qcjk_misc, Qkana, Qbopomofo; |
| 82 | static Lisp_Object Qkanbun, Qyi, Qbyzantine_musical_symbol; |
| 83 | static Lisp_Object Qmusical_symbol, Qmathematical, Qcham, Qphonetic; |
| 84 | /* Not defined in characters.el, but referenced in fontset.el. */ |
| 85 | static Lisp_Object Qbalinese, Qbuginese, Qbuhid, Qcuneiform, Qcypriot; |
| 86 | static Lisp_Object Qdeseret, Qglagolitic, Qgothic, Qhanunoo, Qkharoshthi; |
| 87 | static Lisp_Object Qlimbu, Qlinear_b, Qold_italic, Qold_persian, Qosmanya; |
| 88 | static Lisp_Object Qphags_pa, Qphoenician, Qshavian, Qsyloti_nagri; |
| 89 | static Lisp_Object Qtagalog, Qtagbanwa, Qtai_le, Qtifinagh, Qugaritic; |
| 90 | |
| 91 | /* W32 charsets: for use in Vw32_charset_info_alist. */ |
| 92 | static Lisp_Object Qw32_charset_ansi, Qw32_charset_default; |
| 93 | static Lisp_Object Qw32_charset_symbol, Qw32_charset_shiftjis; |
| 94 | static Lisp_Object Qw32_charset_hangeul, Qw32_charset_gb2312; |
| 95 | static Lisp_Object Qw32_charset_chinesebig5, Qw32_charset_oem; |
| 96 | static Lisp_Object Qw32_charset_easteurope, Qw32_charset_turkish; |
| 97 | static Lisp_Object Qw32_charset_baltic, Qw32_charset_russian; |
| 98 | static Lisp_Object Qw32_charset_arabic, Qw32_charset_greek; |
| 99 | static Lisp_Object Qw32_charset_hebrew, Qw32_charset_vietnamese; |
| 100 | static Lisp_Object Qw32_charset_thai, Qw32_charset_johab, Qw32_charset_mac; |
| 101 | |
| 102 | /* Font spacing symbols - defined in font.c. */ |
| 103 | extern Lisp_Object Qc, Qp, Qm; |
| 104 | |
| 105 | static void fill_in_logfont (struct frame *, LOGFONT *, Lisp_Object); |
| 106 | |
| 107 | static BYTE w32_antialias_type (Lisp_Object); |
| 108 | static Lisp_Object lispy_antialias_type (BYTE); |
| 109 | |
| 110 | static Lisp_Object font_supported_scripts (FONTSIGNATURE *); |
| 111 | static int w32font_full_name (LOGFONT *, Lisp_Object, int, char *, int); |
| 112 | static void compute_metrics (HDC, struct w32font_info *, unsigned int, |
| 113 | struct w32_metric_cache *); |
| 114 | |
| 115 | static Lisp_Object w32_registry (LONG, DWORD); |
| 116 | |
| 117 | /* EnumFontFamiliesEx callbacks. */ |
| 118 | static int CALLBACK add_font_entity_to_list (ENUMLOGFONTEX *, |
| 119 | NEWTEXTMETRICEX *, |
| 120 | DWORD, LPARAM); |
| 121 | static int CALLBACK add_one_font_entity_to_list (ENUMLOGFONTEX *, |
| 122 | NEWTEXTMETRICEX *, |
| 123 | DWORD, LPARAM); |
| 124 | static int CALLBACK add_font_name_to_list (ENUMLOGFONTEX *, |
| 125 | NEWTEXTMETRICEX *, |
| 126 | DWORD, LPARAM); |
| 127 | |
| 128 | /* struct passed in as LPARAM arg to EnumFontFamiliesEx, for keeping track |
| 129 | of what we really want. */ |
| 130 | struct font_callback_data |
| 131 | { |
| 132 | /* The logfont we are matching against. EnumFontFamiliesEx only matches |
| 133 | face name and charset, so we need to manually match everything else |
| 134 | in the callback function. */ |
| 135 | LOGFONT pattern; |
| 136 | /* The original font spec or entity. */ |
| 137 | Lisp_Object orig_font_spec; |
| 138 | /* The frame the font is being loaded on. */ |
| 139 | Lisp_Object frame; |
| 140 | /* The list to add matches to. */ |
| 141 | Lisp_Object list; |
| 142 | /* Whether to match only opentype fonts. */ |
| 143 | int opentype_only; |
| 144 | }; |
| 145 | |
| 146 | /* Handles the problem that EnumFontFamiliesEx will not return all |
| 147 | style variations if the font name is not specified. */ |
| 148 | static void list_all_matching_fonts (struct font_callback_data *); |
| 149 | |
| 150 | #ifdef WINDOWSNT |
| 151 | |
| 152 | static BOOL g_b_init_get_outline_metrics_w; |
| 153 | static BOOL g_b_init_get_text_metrics_w; |
| 154 | static BOOL g_b_init_get_glyph_outline_w; |
| 155 | static BOOL g_b_init_get_glyph_outline_w; |
| 156 | static BOOL g_b_init_get_char_width_32_w; |
| 157 | |
| 158 | typedef UINT (WINAPI * GetOutlineTextMetricsW_Proc) ( |
| 159 | HDC hdc, |
| 160 | UINT cbData, |
| 161 | LPOUTLINETEXTMETRICW lpotmw); |
| 162 | typedef BOOL (WINAPI * GetTextMetricsW_Proc) ( |
| 163 | HDC hdc, |
| 164 | LPTEXTMETRICW lptmw); |
| 165 | typedef DWORD (WINAPI * GetGlyphOutlineW_Proc) ( |
| 166 | HDC hdc, |
| 167 | UINT uChar, |
| 168 | UINT uFormat, |
| 169 | LPGLYPHMETRICS lpgm, |
| 170 | DWORD cbBuffer, |
| 171 | LPVOID lpvBuffer, |
| 172 | const MAT2 *lpmat2); |
| 173 | typedef BOOL (WINAPI * GetCharWidth32W_Proc) ( |
| 174 | HDC hdc, |
| 175 | UINT uFirstChar, |
| 176 | UINT uLastChar, |
| 177 | LPINT lpBuffer); |
| 178 | |
| 179 | /* Several "wide" functions we use to support the font backends are |
| 180 | unavailable on Windows 9X, unless UNICOWS.DLL is installed (their |
| 181 | versions in the default libraries are non-functional stubs). On NT |
| 182 | and later systems, these functions are in GDI32.DLL. The following |
| 183 | helper function attempts to load UNICOWS.DLL on Windows 9X, and |
| 184 | refuses to let Emacs start up if that library is not found. On NT |
| 185 | and later versions, it simply loads GDI32.DLL, which should always |
| 186 | be available. */ |
| 187 | static HMODULE |
| 188 | w32_load_unicows_or_gdi32 (void) |
| 189 | { |
| 190 | return maybe_load_unicows_dll (); |
| 191 | } |
| 192 | |
| 193 | /* The following 3 functions call the problematic "wide" APIs via |
| 194 | function pointers, to avoid linking against the non-standard |
| 195 | libunicows on W9X. */ |
| 196 | static UINT WINAPI |
| 197 | get_outline_metrics_w(HDC hdc, UINT cbData, LPOUTLINETEXTMETRICW lpotmw) |
| 198 | { |
| 199 | static GetOutlineTextMetricsW_Proc s_pfn_Get_Outline_Text_MetricsW = NULL; |
| 200 | HMODULE hm_unicows = NULL; |
| 201 | if (g_b_init_get_outline_metrics_w == 0) |
| 202 | { |
| 203 | g_b_init_get_outline_metrics_w = 1; |
| 204 | hm_unicows = w32_load_unicows_or_gdi32 (); |
| 205 | if (hm_unicows) |
| 206 | s_pfn_Get_Outline_Text_MetricsW = (GetOutlineTextMetricsW_Proc) |
| 207 | GetProcAddress (hm_unicows, "GetOutlineTextMetricsW"); |
| 208 | } |
| 209 | eassert (s_pfn_Get_Outline_Text_MetricsW != NULL); |
| 210 | return s_pfn_Get_Outline_Text_MetricsW (hdc, cbData, lpotmw); |
| 211 | } |
| 212 | |
| 213 | static BOOL WINAPI |
| 214 | get_text_metrics_w(HDC hdc, LPTEXTMETRICW lptmw) |
| 215 | { |
| 216 | static GetTextMetricsW_Proc s_pfn_Get_Text_MetricsW = NULL; |
| 217 | HMODULE hm_unicows = NULL; |
| 218 | if (g_b_init_get_text_metrics_w == 0) |
| 219 | { |
| 220 | g_b_init_get_text_metrics_w = 1; |
| 221 | hm_unicows = w32_load_unicows_or_gdi32 (); |
| 222 | if (hm_unicows) |
| 223 | s_pfn_Get_Text_MetricsW = (GetTextMetricsW_Proc) |
| 224 | GetProcAddress (hm_unicows, "GetTextMetricsW"); |
| 225 | } |
| 226 | eassert (s_pfn_Get_Text_MetricsW != NULL); |
| 227 | return s_pfn_Get_Text_MetricsW (hdc, lptmw); |
| 228 | } |
| 229 | |
| 230 | static DWORD WINAPI |
| 231 | get_glyph_outline_w (HDC hdc, UINT uChar, UINT uFormat, LPGLYPHMETRICS lpgm, |
| 232 | DWORD cbBuffer, LPVOID lpvBuffer, const MAT2 *lpmat2) |
| 233 | { |
| 234 | static GetGlyphOutlineW_Proc s_pfn_Get_Glyph_OutlineW = NULL; |
| 235 | HMODULE hm_unicows = NULL; |
| 236 | if (g_b_init_get_glyph_outline_w == 0) |
| 237 | { |
| 238 | g_b_init_get_glyph_outline_w = 1; |
| 239 | hm_unicows = w32_load_unicows_or_gdi32 (); |
| 240 | if (hm_unicows) |
| 241 | s_pfn_Get_Glyph_OutlineW = (GetGlyphOutlineW_Proc) |
| 242 | GetProcAddress (hm_unicows, "GetGlyphOutlineW"); |
| 243 | } |
| 244 | eassert (s_pfn_Get_Glyph_OutlineW != NULL); |
| 245 | return s_pfn_Get_Glyph_OutlineW (hdc, uChar, uFormat, lpgm, cbBuffer, |
| 246 | lpvBuffer, lpmat2); |
| 247 | } |
| 248 | |
| 249 | static DWORD WINAPI |
| 250 | get_char_width_32_w (HDC hdc, UINT uFirstChar, UINT uLastChar, LPINT lpBuffer) |
| 251 | { |
| 252 | static GetCharWidth32W_Proc s_pfn_Get_Char_Width_32W = NULL; |
| 253 | HMODULE hm_unicows = NULL; |
| 254 | if (g_b_init_get_char_width_32_w == 0) |
| 255 | { |
| 256 | g_b_init_get_char_width_32_w = 1; |
| 257 | hm_unicows = w32_load_unicows_or_gdi32 (); |
| 258 | if (hm_unicows) |
| 259 | s_pfn_Get_Char_Width_32W = (GetCharWidth32W_Proc) |
| 260 | GetProcAddress (hm_unicows, "GetCharWidth32W"); |
| 261 | } |
| 262 | eassert (s_pfn_Get_Char_Width_32W != NULL); |
| 263 | return s_pfn_Get_Char_Width_32W (hdc, uFirstChar, uLastChar, lpBuffer); |
| 264 | } |
| 265 | |
| 266 | #else /* Cygwin */ |
| 267 | |
| 268 | /* Cygwin doesn't support Windows 9X, and links against GDI32.DLL, so |
| 269 | it can just call these functions directly. */ |
| 270 | #define get_outline_metrics_w(h,d,o) GetOutlineTextMetricsW(h,d,o) |
| 271 | #define get_text_metrics_w(h,t) GetTextMetricsW(h,t) |
| 272 | #define get_glyph_outline_w(h,uc,f,gm,b,v,m) \ |
| 273 | GetGlyphOutlineW(h,uc,f,gm,b,v,m) |
| 274 | #define get_char_width_32_w(h,fc,lc,b) GetCharWidth32W(h,fc,lc,b) |
| 275 | |
| 276 | #endif /* Cygwin */ |
| 277 | |
| 278 | static int |
| 279 | memq_no_quit (Lisp_Object elt, Lisp_Object list) |
| 280 | { |
| 281 | while (CONSP (list) && ! EQ (XCAR (list), elt)) |
| 282 | list = XCDR (list); |
| 283 | return (CONSP (list)); |
| 284 | } |
| 285 | |
| 286 | Lisp_Object |
| 287 | intern_font_name (char * string) |
| 288 | { |
| 289 | Lisp_Object str = DECODE_SYSTEM (build_string (string)); |
| 290 | int len = SCHARS (str); |
| 291 | Lisp_Object obarray = check_obarray (Vobarray); |
| 292 | Lisp_Object tem = oblookup (obarray, SDATA (str), len, len); |
| 293 | /* This code is similar to intern function from lread.c. */ |
| 294 | return SYMBOLP (tem) ? tem : Fintern (str, obarray); |
| 295 | } |
| 296 | |
| 297 | /* w32 implementation of get_cache for font backend. |
| 298 | Return a cache of font-entities on FRAME. The cache must be a |
| 299 | cons whose cdr part is the actual cache area. */ |
| 300 | Lisp_Object |
| 301 | w32font_get_cache (struct frame *f) |
| 302 | { |
| 303 | struct w32_display_info *dpyinfo = FRAME_DISPLAY_INFO (f); |
| 304 | |
| 305 | return (dpyinfo->name_list_element); |
| 306 | } |
| 307 | |
| 308 | /* w32 implementation of list for font backend. |
| 309 | List fonts exactly matching with FONT_SPEC on FRAME. The value |
| 310 | is a vector of font-entities. This is the sole API that |
| 311 | allocates font-entities. */ |
| 312 | static Lisp_Object |
| 313 | w32font_list (struct frame *f, Lisp_Object font_spec) |
| 314 | { |
| 315 | Lisp_Object fonts = w32font_list_internal (f, font_spec, 0); |
| 316 | FONT_ADD_LOG ("w32font-list", font_spec, fonts); |
| 317 | return fonts; |
| 318 | } |
| 319 | |
| 320 | /* w32 implementation of match for font backend. |
| 321 | Return a font entity most closely matching with FONT_SPEC on |
| 322 | FRAME. The closeness is determined by the font backend, thus |
| 323 | `face-font-selection-order' is ignored here. */ |
| 324 | static Lisp_Object |
| 325 | w32font_match (struct frame *f, Lisp_Object font_spec) |
| 326 | { |
| 327 | Lisp_Object entity = w32font_match_internal (f, font_spec, 0); |
| 328 | FONT_ADD_LOG ("w32font-match", font_spec, entity); |
| 329 | return entity; |
| 330 | } |
| 331 | |
| 332 | /* w32 implementation of list_family for font backend. |
| 333 | List available families. The value is a list of family names |
| 334 | (symbols). */ |
| 335 | static Lisp_Object |
| 336 | w32font_list_family (struct frame *f) |
| 337 | { |
| 338 | Lisp_Object list = Qnil; |
| 339 | LOGFONT font_match_pattern; |
| 340 | HDC dc; |
| 341 | |
| 342 | memset (&font_match_pattern, 0, sizeof (font_match_pattern)); |
| 343 | font_match_pattern.lfCharSet = DEFAULT_CHARSET; |
| 344 | |
| 345 | dc = get_frame_dc (f); |
| 346 | |
| 347 | EnumFontFamiliesEx (dc, &font_match_pattern, |
| 348 | (FONTENUMPROC) add_font_name_to_list, |
| 349 | (LPARAM) &list, 0); |
| 350 | release_frame_dc (f, dc); |
| 351 | |
| 352 | return list; |
| 353 | } |
| 354 | |
| 355 | /* w32 implementation of open for font backend. |
| 356 | Open a font specified by FONT_ENTITY on frame F. |
| 357 | If the font is scalable, open it with PIXEL_SIZE. */ |
| 358 | static Lisp_Object |
| 359 | w32font_open (struct frame *f, Lisp_Object font_entity, int pixel_size) |
| 360 | { |
| 361 | Lisp_Object font_object |
| 362 | = font_make_object (VECSIZE (struct w32font_info), |
| 363 | font_entity, pixel_size); |
| 364 | struct w32font_info *w32_font |
| 365 | = (struct w32font_info *) XFONT_OBJECT (font_object); |
| 366 | |
| 367 | ASET (font_object, FONT_TYPE_INDEX, Qgdi); |
| 368 | |
| 369 | if (!w32font_open_internal (f, font_entity, pixel_size, font_object)) |
| 370 | { |
| 371 | return Qnil; |
| 372 | } |
| 373 | |
| 374 | /* GDI backend does not use glyph indices. */ |
| 375 | w32_font->glyph_idx = 0; |
| 376 | |
| 377 | return font_object; |
| 378 | } |
| 379 | |
| 380 | /* w32 implementation of close for font_backend. */ |
| 381 | void |
| 382 | w32font_close (struct font *font) |
| 383 | { |
| 384 | struct w32font_info *w32_font = (struct w32font_info *) font; |
| 385 | |
| 386 | if (w32_font->hfont) |
| 387 | { |
| 388 | /* Delete the GDI font object. */ |
| 389 | DeleteObject (w32_font->hfont); |
| 390 | w32_font->hfont = NULL; |
| 391 | |
| 392 | /* Free all the cached metrics. */ |
| 393 | if (w32_font->cached_metrics) |
| 394 | { |
| 395 | int i; |
| 396 | |
| 397 | for (i = 0; i < w32_font->n_cache_blocks; i++) |
| 398 | xfree (w32_font->cached_metrics[i]); |
| 399 | xfree (w32_font->cached_metrics); |
| 400 | w32_font->cached_metrics = NULL; |
| 401 | } |
| 402 | } |
| 403 | } |
| 404 | |
| 405 | /* w32 implementation of has_char for font backend. |
| 406 | Optional. |
| 407 | If FONT_ENTITY has a glyph for character C (Unicode code point), |
| 408 | return 1. If not, return 0. If a font must be opened to check |
| 409 | it, return -1. */ |
| 410 | int |
| 411 | w32font_has_char (Lisp_Object entity, int c) |
| 412 | { |
| 413 | /* We can't be certain about which characters a font will support until |
| 414 | we open it. Checking the scripts that the font supports turns out |
| 415 | to not be reliable. */ |
| 416 | return -1; |
| 417 | |
| 418 | #if 0 |
| 419 | Lisp_Object supported_scripts, extra, script; |
| 420 | DWORD mask; |
| 421 | |
| 422 | extra = AREF (entity, FONT_EXTRA_INDEX); |
| 423 | if (!CONSP (extra)) |
| 424 | return -1; |
| 425 | |
| 426 | supported_scripts = assq_no_quit (QCscript, extra); |
| 427 | /* If font doesn't claim to support any scripts, then we can't be certain |
| 428 | until we open it. */ |
| 429 | if (!CONSP (supported_scripts)) |
| 430 | return -1; |
| 431 | |
| 432 | supported_scripts = XCDR (supported_scripts); |
| 433 | |
| 434 | script = CHAR_TABLE_REF (Vchar_script_table, c); |
| 435 | |
| 436 | /* If we don't know what script the character is from, then we can't be |
| 437 | certain until we open it. Also if the font claims support for the script |
| 438 | the character is from, it may only have partial coverage, so we still |
| 439 | can't be certain until we open the font. */ |
| 440 | if (NILP (script) || memq_no_quit (script, supported_scripts)) |
| 441 | return -1; |
| 442 | |
| 443 | /* Font reports what scripts it supports, and none of them are the script |
| 444 | the character is from. But we still can't be certain, as some fonts |
| 445 | will contain some/most/all of the characters in that script without |
| 446 | claiming support for it. */ |
| 447 | return -1; |
| 448 | #endif |
| 449 | } |
| 450 | |
| 451 | /* w32 implementation of encode_char for font backend. |
| 452 | Return a glyph code of FONT for character C (Unicode code point). |
| 453 | If FONT doesn't have such a glyph, return FONT_INVALID_CODE. |
| 454 | |
| 455 | For speed, the gdi backend uses Unicode (Emacs calls encode_char |
| 456 | far too often for it to be efficient). But we still need to detect |
| 457 | which characters are not supported by the font. |
| 458 | */ |
| 459 | static unsigned |
| 460 | w32font_encode_char (struct font *font, int c) |
| 461 | { |
| 462 | struct w32font_info * w32_font = (struct w32font_info *)font; |
| 463 | |
| 464 | if (c < w32_font->metrics.tmFirstChar |
| 465 | || c > w32_font->metrics.tmLastChar) |
| 466 | return FONT_INVALID_CODE; |
| 467 | else |
| 468 | return c; |
| 469 | } |
| 470 | |
| 471 | /* w32 implementation of text_extents for font backend. |
| 472 | Perform the size computation of glyphs of FONT and fillin members |
| 473 | of METRICS. The glyphs are specified by their glyph codes in |
| 474 | CODE (length NGLYPHS). Apparently metrics can be NULL, in this |
| 475 | case just return the overall width. */ |
| 476 | int |
| 477 | w32font_text_extents (struct font *font, unsigned *code, |
| 478 | int nglyphs, struct font_metrics *metrics) |
| 479 | { |
| 480 | int i; |
| 481 | HFONT old_font = NULL; |
| 482 | HDC dc = NULL; |
| 483 | struct frame * f; |
| 484 | int total_width = 0; |
| 485 | WORD *wcode; |
| 486 | SIZE size; |
| 487 | |
| 488 | struct w32font_info *w32_font = (struct w32font_info *) font; |
| 489 | |
| 490 | if (metrics) |
| 491 | { |
| 492 | memset (metrics, 0, sizeof (struct font_metrics)); |
| 493 | metrics->ascent = font->ascent; |
| 494 | metrics->descent = font->descent; |
| 495 | |
| 496 | for (i = 0; i < nglyphs; i++) |
| 497 | { |
| 498 | struct w32_metric_cache *char_metric; |
| 499 | int block = *(code + i) / CACHE_BLOCKSIZE; |
| 500 | int pos_in_block = *(code + i) % CACHE_BLOCKSIZE; |
| 501 | |
| 502 | if (block >= w32_font->n_cache_blocks) |
| 503 | { |
| 504 | if (!w32_font->cached_metrics) |
| 505 | w32_font->cached_metrics |
| 506 | = xmalloc ((block + 1) |
| 507 | * sizeof (struct w32_metric_cache *)); |
| 508 | else |
| 509 | w32_font->cached_metrics |
| 510 | = xrealloc (w32_font->cached_metrics, |
| 511 | (block + 1) |
| 512 | * sizeof (struct w32_metric_cache *)); |
| 513 | memset (w32_font->cached_metrics + w32_font->n_cache_blocks, 0, |
| 514 | ((block + 1 - w32_font->n_cache_blocks) |
| 515 | * sizeof (struct w32_metric_cache *))); |
| 516 | w32_font->n_cache_blocks = block + 1; |
| 517 | } |
| 518 | |
| 519 | if (!w32_font->cached_metrics[block]) |
| 520 | { |
| 521 | w32_font->cached_metrics[block] |
| 522 | = xzalloc (CACHE_BLOCKSIZE * sizeof (struct w32_metric_cache)); |
| 523 | } |
| 524 | |
| 525 | char_metric = w32_font->cached_metrics[block] + pos_in_block; |
| 526 | |
| 527 | if (char_metric->status == W32METRIC_NO_ATTEMPT) |
| 528 | { |
| 529 | if (dc == NULL) |
| 530 | { |
| 531 | /* TODO: Frames can come and go, and their fonts |
| 532 | outlive them. So we can't cache the frame in the |
| 533 | font structure. Use selected_frame until the API |
| 534 | is updated to pass in a frame. */ |
| 535 | f = XFRAME (selected_frame); |
| 536 | |
| 537 | dc = get_frame_dc (f); |
| 538 | old_font = SelectObject (dc, w32_font->hfont); |
| 539 | } |
| 540 | compute_metrics (dc, w32_font, *(code + i), char_metric); |
| 541 | } |
| 542 | |
| 543 | if (char_metric->status == W32METRIC_SUCCESS) |
| 544 | { |
| 545 | metrics->lbearing = min (metrics->lbearing, |
| 546 | metrics->width + char_metric->lbearing); |
| 547 | metrics->rbearing = max (metrics->rbearing, |
| 548 | metrics->width + char_metric->rbearing); |
| 549 | metrics->width += char_metric->width; |
| 550 | } |
| 551 | else |
| 552 | /* If we couldn't get metrics for a char, |
| 553 | use alternative method. */ |
| 554 | break; |
| 555 | } |
| 556 | /* If we got through everything, return. */ |
| 557 | if (i == nglyphs) |
| 558 | { |
| 559 | if (dc != NULL) |
| 560 | { |
| 561 | /* Restore state and release DC. */ |
| 562 | SelectObject (dc, old_font); |
| 563 | release_frame_dc (f, dc); |
| 564 | } |
| 565 | |
| 566 | return metrics->width; |
| 567 | } |
| 568 | } |
| 569 | |
| 570 | /* For non-truetype fonts, GetGlyphOutlineW is not supported, so |
| 571 | fallback on other methods that will at least give some of the metric |
| 572 | information. */ |
| 573 | |
| 574 | /* Make array big enough to hold surrogates. */ |
| 575 | wcode = alloca (nglyphs * sizeof (WORD) * 2); |
| 576 | for (i = 0; i < nglyphs; i++) |
| 577 | { |
| 578 | if (code[i] < 0x10000) |
| 579 | wcode[i] = code[i]; |
| 580 | else |
| 581 | { |
| 582 | DWORD surrogate = code[i] - 0x10000; |
| 583 | |
| 584 | /* High surrogate: U+D800 - U+DBFF. */ |
| 585 | wcode[i++] = 0xD800 + ((surrogate >> 10) & 0x03FF); |
| 586 | /* Low surrogate: U+DC00 - U+DFFF. */ |
| 587 | wcode[i] = 0xDC00 + (surrogate & 0x03FF); |
| 588 | /* An extra glyph. wcode is already double the size of code to |
| 589 | cope with this. */ |
| 590 | nglyphs++; |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | if (dc == NULL) |
| 595 | { |
| 596 | /* TODO: Frames can come and go, and their fonts outlive |
| 597 | them. So we can't cache the frame in the font structure. Use |
| 598 | selected_frame until the API is updated to pass in a |
| 599 | frame. */ |
| 600 | f = XFRAME (selected_frame); |
| 601 | |
| 602 | dc = get_frame_dc (f); |
| 603 | old_font = SelectObject (dc, w32_font->hfont); |
| 604 | } |
| 605 | |
| 606 | if (GetTextExtentPoint32W (dc, wcode, nglyphs, &size)) |
| 607 | { |
| 608 | total_width = size.cx; |
| 609 | } |
| 610 | |
| 611 | /* On 95/98/ME, only some Unicode functions are available, so fallback |
| 612 | on doing a dummy draw to find the total width. */ |
| 613 | if (!total_width) |
| 614 | { |
| 615 | RECT rect; |
| 616 | rect.top = 0; rect.bottom = font->height; rect.left = 0; rect.right = 1; |
| 617 | DrawTextW (dc, wcode, nglyphs, &rect, |
| 618 | DT_CALCRECT | DT_NOPREFIX | DT_SINGLELINE); |
| 619 | total_width = rect.right; |
| 620 | } |
| 621 | |
| 622 | /* Give our best estimate of the metrics, based on what we know. */ |
| 623 | if (metrics) |
| 624 | { |
| 625 | metrics->width = total_width - w32_font->metrics.tmOverhang; |
| 626 | metrics->lbearing = 0; |
| 627 | metrics->rbearing = total_width; |
| 628 | } |
| 629 | |
| 630 | /* Restore state and release DC. */ |
| 631 | SelectObject (dc, old_font); |
| 632 | release_frame_dc (f, dc); |
| 633 | |
| 634 | return total_width; |
| 635 | } |
| 636 | |
| 637 | /* w32 implementation of draw for font backend. |
| 638 | Optional. |
| 639 | Draw glyphs between FROM and TO of S->char2b at (X Y) pixel |
| 640 | position of frame F with S->FACE and S->GC. If WITH_BACKGROUND, |
| 641 | fill the background in advance. It is assured that WITH_BACKGROUND |
| 642 | is false when (FROM > 0 || TO < S->nchars). |
| 643 | |
| 644 | TODO: Currently this assumes that the colors and fonts are already |
| 645 | set in the DC. This seems to be true now, but maybe only due to |
| 646 | the old font code setting it up. It may be safer to resolve faces |
| 647 | and fonts in here and set them explicitly |
| 648 | */ |
| 649 | |
| 650 | int |
| 651 | w32font_draw (struct glyph_string *s, int from, int to, |
| 652 | int x, int y, bool with_background) |
| 653 | { |
| 654 | UINT options; |
| 655 | HRGN orig_clip = NULL; |
| 656 | int len = to - from; |
| 657 | struct w32font_info *w32font = (struct w32font_info *) s->font; |
| 658 | |
| 659 | options = w32font->glyph_idx; |
| 660 | |
| 661 | if (s->num_clips > 0) |
| 662 | { |
| 663 | HRGN new_clip = CreateRectRgnIndirect (s->clip); |
| 664 | |
| 665 | /* Save clip region for later restoration. */ |
| 666 | orig_clip = CreateRectRgn (0, 0, 0, 0); |
| 667 | if (!GetClipRgn (s->hdc, orig_clip)) |
| 668 | { |
| 669 | DeleteObject (orig_clip); |
| 670 | orig_clip = NULL; |
| 671 | } |
| 672 | |
| 673 | if (s->num_clips > 1) |
| 674 | { |
| 675 | HRGN clip2 = CreateRectRgnIndirect (s->clip + 1); |
| 676 | |
| 677 | CombineRgn (new_clip, new_clip, clip2, RGN_OR); |
| 678 | DeleteObject (clip2); |
| 679 | } |
| 680 | |
| 681 | SelectClipRgn (s->hdc, new_clip); |
| 682 | DeleteObject (new_clip); |
| 683 | } |
| 684 | |
| 685 | /* Using OPAQUE background mode can clear more background than expected |
| 686 | when Cleartype is used. Draw the background manually to avoid this. */ |
| 687 | SetBkMode (s->hdc, TRANSPARENT); |
| 688 | if (with_background) |
| 689 | { |
| 690 | HBRUSH brush; |
| 691 | RECT rect; |
| 692 | struct font *font = s->font; |
| 693 | |
| 694 | brush = CreateSolidBrush (s->gc->background); |
| 695 | rect.left = x; |
| 696 | rect.top = y - font->ascent; |
| 697 | rect.right = x + s->width; |
| 698 | rect.bottom = y + font->descent; |
| 699 | FillRect (s->hdc, &rect, brush); |
| 700 | DeleteObject (brush); |
| 701 | } |
| 702 | |
| 703 | if (s->padding_p) |
| 704 | { |
| 705 | int i; |
| 706 | |
| 707 | for (i = 0; i < len; i++) |
| 708 | ExtTextOutW (s->hdc, x + i, y, options, NULL, |
| 709 | s->char2b + from + i, 1, NULL); |
| 710 | } |
| 711 | else |
| 712 | ExtTextOutW (s->hdc, x, y, options, NULL, s->char2b + from, len, NULL); |
| 713 | |
| 714 | /* Restore clip region. */ |
| 715 | if (s->num_clips > 0) |
| 716 | SelectClipRgn (s->hdc, orig_clip); |
| 717 | |
| 718 | if (orig_clip) |
| 719 | DeleteObject (orig_clip); |
| 720 | |
| 721 | return len; |
| 722 | } |
| 723 | |
| 724 | /* w32 implementation of free_entity for font backend. |
| 725 | Optional (if FONT_EXTRA_INDEX is not Lisp_Save_Value). |
| 726 | Free FONT_EXTRA_INDEX field of FONT_ENTITY. |
| 727 | static void |
| 728 | w32font_free_entity (Lisp_Object entity); |
| 729 | */ |
| 730 | |
| 731 | /* w32 implementation of prepare_face for font backend. |
| 732 | Optional (if FACE->extra is not used). |
| 733 | Prepare FACE for displaying characters by FONT on frame F by |
| 734 | storing some data in FACE->extra. If successful, return 0. |
| 735 | Otherwise, return -1. |
| 736 | static int |
| 737 | w32font_prepare_face (struct frame *f, struct face *face); |
| 738 | */ |
| 739 | /* w32 implementation of done_face for font backend. |
| 740 | Optional. |
| 741 | Done FACE for displaying characters by FACE->font on frame F. |
| 742 | static void |
| 743 | w32font_done_face (struct frame *f, struct face *face); */ |
| 744 | |
| 745 | /* w32 implementation of get_bitmap for font backend. |
| 746 | Optional. |
| 747 | Store bitmap data for glyph-code CODE of FONT in BITMAP. It is |
| 748 | intended that this method is called from the other font-driver |
| 749 | for actual drawing. |
| 750 | static int |
| 751 | w32font_get_bitmap (struct font *font, unsigned code, |
| 752 | struct font_bitmap *bitmap, int bits_per_pixel); |
| 753 | */ |
| 754 | /* w32 implementation of free_bitmap for font backend. |
| 755 | Optional. |
| 756 | Free bitmap data in BITMAP. |
| 757 | static void |
| 758 | w32font_free_bitmap (struct font *font, struct font_bitmap *bitmap); |
| 759 | */ |
| 760 | /* w32 implementation of get_outline for font backend. |
| 761 | Optional. |
| 762 | Return an outline data for glyph-code CODE of FONT. The format |
| 763 | of the outline data depends on the font-driver. |
| 764 | static void * |
| 765 | w32font_get_outline (struct font *font, unsigned code); |
| 766 | */ |
| 767 | /* w32 implementation of free_outline for font backend. |
| 768 | Optional. |
| 769 | Free OUTLINE (that is obtained by the above method). |
| 770 | static void |
| 771 | w32font_free_outline (struct font *font, void *outline); |
| 772 | */ |
| 773 | /* w32 implementation of anchor_point for font backend. |
| 774 | Optional. |
| 775 | Get coordinates of the INDEXth anchor point of the glyph whose |
| 776 | code is CODE. Store the coordinates in *X and *Y. Return 0 if |
| 777 | the operations was successful. Otherwise return -1. |
| 778 | static int |
| 779 | w32font_anchor_point (struct font *font, unsigned code, |
| 780 | int index, int *x, int *y); |
| 781 | */ |
| 782 | /* w32 implementation of otf_capability for font backend. |
| 783 | Optional. |
| 784 | Return a list describing which scripts/languages FONT |
| 785 | supports by which GSUB/GPOS features of OpenType tables. |
| 786 | static Lisp_Object |
| 787 | w32font_otf_capability (struct font *font); |
| 788 | */ |
| 789 | /* w32 implementation of otf_drive for font backend. |
| 790 | Optional. |
| 791 | Apply FONT's OTF-FEATURES to the glyph string. |
| 792 | |
| 793 | FEATURES specifies which OTF features to apply in this format: |
| 794 | (SCRIPT LANGSYS GSUB-FEATURE GPOS-FEATURE) |
| 795 | See the documentation of `font-drive-otf' for the detail. |
| 796 | |
| 797 | This method applies the specified features to the codes in the |
| 798 | elements of GSTRING-IN (between FROMth and TOth). The output |
| 799 | codes are stored in GSTRING-OUT at the IDXth element and the |
| 800 | following elements. |
| 801 | |
| 802 | Return the number of output codes. If none of the features are |
| 803 | applicable to the input data, return 0. If GSTRING-OUT is too |
| 804 | short, return -1. |
| 805 | static int |
| 806 | w32font_otf_drive (struct font *font, Lisp_Object features, |
| 807 | Lisp_Object gstring_in, int from, int to, |
| 808 | Lisp_Object gstring_out, int idx, |
| 809 | bool alternate_subst); |
| 810 | */ |
| 811 | |
| 812 | /* Internal implementation of w32font_list. |
| 813 | Additional parameter opentype_only restricts the returned fonts to |
| 814 | opentype fonts, which can be used with the Uniscribe backend. */ |
| 815 | Lisp_Object |
| 816 | w32font_list_internal (struct frame *f, Lisp_Object font_spec, int opentype_only) |
| 817 | { |
| 818 | struct font_callback_data match_data; |
| 819 | HDC dc; |
| 820 | |
| 821 | match_data.orig_font_spec = font_spec; |
| 822 | match_data.list = Qnil; |
| 823 | XSETFRAME (match_data.frame, f); |
| 824 | |
| 825 | memset (&match_data.pattern, 0, sizeof (LOGFONT)); |
| 826 | fill_in_logfont (f, &match_data.pattern, font_spec); |
| 827 | |
| 828 | /* If the charset is unrecognized, then we won't find a font, so don't |
| 829 | waste time looking for one. */ |
| 830 | if (match_data.pattern.lfCharSet == DEFAULT_CHARSET) |
| 831 | { |
| 832 | Lisp_Object spec_charset = AREF (font_spec, FONT_REGISTRY_INDEX); |
| 833 | if (!NILP (spec_charset) |
| 834 | && !EQ (spec_charset, Qiso10646_1) |
| 835 | && !EQ (spec_charset, Qunicode_bmp) |
| 836 | && !EQ (spec_charset, Qunicode_sip) |
| 837 | && !EQ (spec_charset, Qunknown)) |
| 838 | return Qnil; |
| 839 | } |
| 840 | |
| 841 | match_data.opentype_only = opentype_only; |
| 842 | if (opentype_only) |
| 843 | match_data.pattern.lfOutPrecision = OUT_OUTLINE_PRECIS; |
| 844 | |
| 845 | if (match_data.pattern.lfFaceName[0] == '\0') |
| 846 | { |
| 847 | /* EnumFontFamiliesEx does not take other fields into account if |
| 848 | font name is blank, so need to use two passes. */ |
| 849 | list_all_matching_fonts (&match_data); |
| 850 | } |
| 851 | else |
| 852 | { |
| 853 | dc = get_frame_dc (f); |
| 854 | |
| 855 | EnumFontFamiliesEx (dc, &match_data.pattern, |
| 856 | (FONTENUMPROC) add_font_entity_to_list, |
| 857 | (LPARAM) &match_data, 0); |
| 858 | release_frame_dc (f, dc); |
| 859 | } |
| 860 | |
| 861 | return match_data.list; |
| 862 | } |
| 863 | |
| 864 | /* Internal implementation of w32font_match. |
| 865 | Additional parameter opentype_only restricts the returned fonts to |
| 866 | opentype fonts, which can be used with the Uniscribe backend. */ |
| 867 | Lisp_Object |
| 868 | w32font_match_internal (struct frame *f, Lisp_Object font_spec, int opentype_only) |
| 869 | { |
| 870 | struct font_callback_data match_data; |
| 871 | HDC dc; |
| 872 | |
| 873 | match_data.orig_font_spec = font_spec; |
| 874 | XSETFRAME (match_data.frame, f); |
| 875 | match_data.list = Qnil; |
| 876 | |
| 877 | memset (&match_data.pattern, 0, sizeof (LOGFONT)); |
| 878 | fill_in_logfont (f, &match_data.pattern, font_spec); |
| 879 | |
| 880 | match_data.opentype_only = opentype_only; |
| 881 | if (opentype_only) |
| 882 | match_data.pattern.lfOutPrecision = OUT_OUTLINE_PRECIS; |
| 883 | |
| 884 | dc = get_frame_dc (f); |
| 885 | |
| 886 | EnumFontFamiliesEx (dc, &match_data.pattern, |
| 887 | (FONTENUMPROC) add_one_font_entity_to_list, |
| 888 | (LPARAM) &match_data, 0); |
| 889 | release_frame_dc (f, dc); |
| 890 | |
| 891 | return NILP (match_data.list) ? Qnil : XCAR (match_data.list); |
| 892 | } |
| 893 | |
| 894 | int |
| 895 | w32font_open_internal (struct frame *f, Lisp_Object font_entity, |
| 896 | int pixel_size, Lisp_Object font_object) |
| 897 | { |
| 898 | int len, size; |
| 899 | LOGFONT logfont; |
| 900 | HDC dc; |
| 901 | HFONT hfont, old_font; |
| 902 | Lisp_Object val, extra; |
| 903 | struct w32font_info *w32_font; |
| 904 | struct font * font; |
| 905 | OUTLINETEXTMETRICW* metrics = NULL; |
| 906 | |
| 907 | w32_font = (struct w32font_info *) XFONT_OBJECT (font_object); |
| 908 | font = (struct font *) w32_font; |
| 909 | |
| 910 | if (!font) |
| 911 | return 0; |
| 912 | |
| 913 | memset (&logfont, 0, sizeof (logfont)); |
| 914 | fill_in_logfont (f, &logfont, font_entity); |
| 915 | |
| 916 | /* Prefer truetype fonts, to avoid known problems with type1 fonts, and |
| 917 | limitations in bitmap fonts. */ |
| 918 | val = AREF (font_entity, FONT_FOUNDRY_INDEX); |
| 919 | if (!EQ (val, Qraster)) |
| 920 | logfont.lfOutPrecision = OUT_TT_PRECIS; |
| 921 | |
| 922 | size = XINT (AREF (font_entity, FONT_SIZE_INDEX)); |
| 923 | if (!size) |
| 924 | size = pixel_size; |
| 925 | |
| 926 | logfont.lfHeight = -size; |
| 927 | hfont = CreateFontIndirect (&logfont); |
| 928 | |
| 929 | if (hfont == NULL) |
| 930 | return 0; |
| 931 | |
| 932 | /* Get the metrics for this font. */ |
| 933 | dc = get_frame_dc (f); |
| 934 | old_font = SelectObject (dc, hfont); |
| 935 | |
| 936 | /* Try getting the outline metrics (only works for truetype fonts). */ |
| 937 | len = get_outline_metrics_w (dc, 0, NULL); |
| 938 | if (len) |
| 939 | { |
| 940 | metrics = (OUTLINETEXTMETRICW *) alloca (len); |
| 941 | if (get_outline_metrics_w (dc, len, metrics)) |
| 942 | memcpy (&w32_font->metrics, &metrics->otmTextMetrics, |
| 943 | sizeof (TEXTMETRICW)); |
| 944 | else |
| 945 | metrics = NULL; |
| 946 | } |
| 947 | |
| 948 | if (!metrics) |
| 949 | get_text_metrics_w (dc, &w32_font->metrics); |
| 950 | |
| 951 | w32_font->cached_metrics = NULL; |
| 952 | w32_font->n_cache_blocks = 0; |
| 953 | |
| 954 | SelectObject (dc, old_font); |
| 955 | release_frame_dc (f, dc); |
| 956 | |
| 957 | w32_font->hfont = hfont; |
| 958 | |
| 959 | { |
| 960 | char *name; |
| 961 | |
| 962 | /* We don't know how much space we need for the full name, so start with |
| 963 | 96 bytes and go up in steps of 32. */ |
| 964 | len = 96; |
| 965 | name = alloca (len); |
| 966 | while (name && w32font_full_name (&logfont, font_entity, pixel_size, |
| 967 | name, len) < 0) |
| 968 | { |
| 969 | len += 32; |
| 970 | name = alloca (len); |
| 971 | } |
| 972 | if (name) |
| 973 | font->props[FONT_FULLNAME_INDEX] |
| 974 | = DECODE_SYSTEM (build_string (name)); |
| 975 | else |
| 976 | font->props[FONT_FULLNAME_INDEX] |
| 977 | = DECODE_SYSTEM (build_string (logfont.lfFaceName)); |
| 978 | } |
| 979 | |
| 980 | font->max_width = w32_font->metrics.tmMaxCharWidth; |
| 981 | /* Parts of Emacs display assume that height = ascent + descent... |
| 982 | so height is defined later, after ascent and descent. |
| 983 | font->height = w32_font->metrics.tmHeight |
| 984 | + w32_font->metrics.tmExternalLeading; |
| 985 | */ |
| 986 | |
| 987 | font->space_width = font->average_width = w32_font->metrics.tmAveCharWidth; |
| 988 | |
| 989 | font->vertical_centering = 0; |
| 990 | font->baseline_offset = 0; |
| 991 | font->relative_compose = 0; |
| 992 | font->default_ascent = w32_font->metrics.tmAscent; |
| 993 | font->pixel_size = size; |
| 994 | font->driver = &w32font_driver; |
| 995 | /* Use format cached during list, as the information we have access to |
| 996 | here is incomplete. */ |
| 997 | extra = AREF (font_entity, FONT_EXTRA_INDEX); |
| 998 | if (CONSP (extra)) |
| 999 | { |
| 1000 | val = assq_no_quit (QCformat, extra); |
| 1001 | if (CONSP (val)) |
| 1002 | font->props[FONT_FORMAT_INDEX] = XCDR (val); |
| 1003 | else |
| 1004 | font->props[FONT_FORMAT_INDEX] = Qunknown; |
| 1005 | } |
| 1006 | else |
| 1007 | font->props[FONT_FORMAT_INDEX] = Qunknown; |
| 1008 | |
| 1009 | font->props[FONT_FILE_INDEX] = Qnil; |
| 1010 | font->encoding_charset = -1; |
| 1011 | font->repertory_charset = -1; |
| 1012 | /* TODO: do we really want the minimum width here, which could be negative? */ |
| 1013 | font->min_width = font->space_width; |
| 1014 | font->ascent = w32_font->metrics.tmAscent; |
| 1015 | font->descent = w32_font->metrics.tmDescent; |
| 1016 | font->height = font->ascent + font->descent; |
| 1017 | |
| 1018 | if (metrics) |
| 1019 | { |
| 1020 | font->underline_thickness = metrics->otmsUnderscoreSize; |
| 1021 | font->underline_position = -metrics->otmsUnderscorePosition; |
| 1022 | } |
| 1023 | else |
| 1024 | { |
| 1025 | font->underline_thickness = 0; |
| 1026 | font->underline_position = -1; |
| 1027 | } |
| 1028 | |
| 1029 | /* For temporary compatibility with legacy code that expects the |
| 1030 | name to be usable in x-list-fonts. Eventually we expect to change |
| 1031 | x-list-fonts and other places that use fonts so that this can be |
| 1032 | an fcname or similar. */ |
| 1033 | font->props[FONT_NAME_INDEX] = Ffont_xlfd_name (font_object, Qnil); |
| 1034 | |
| 1035 | return 1; |
| 1036 | } |
| 1037 | |
| 1038 | /* Callback function for EnumFontFamiliesEx. |
| 1039 | * Adds the name of a font to a Lisp list (passed in as the lParam arg). */ |
| 1040 | static int CALLBACK |
| 1041 | add_font_name_to_list (ENUMLOGFONTEX *logical_font, |
| 1042 | NEWTEXTMETRICEX *physical_font, |
| 1043 | DWORD font_type, LPARAM list_object) |
| 1044 | { |
| 1045 | Lisp_Object* list = (Lisp_Object *) list_object; |
| 1046 | Lisp_Object family; |
| 1047 | |
| 1048 | /* Skip vertical fonts (intended only for printing) */ |
| 1049 | if (logical_font->elfLogFont.lfFaceName[0] == '@') |
| 1050 | return 1; |
| 1051 | |
| 1052 | family = intern_font_name (logical_font->elfLogFont.lfFaceName); |
| 1053 | if (! memq_no_quit (family, *list)) |
| 1054 | *list = Fcons (family, *list); |
| 1055 | |
| 1056 | return 1; |
| 1057 | } |
| 1058 | |
| 1059 | static int w32_decode_weight (int); |
| 1060 | static int w32_encode_weight (int); |
| 1061 | |
| 1062 | /* Convert an enumerated Windows font to an Emacs font entity. */ |
| 1063 | static Lisp_Object |
| 1064 | w32_enumfont_pattern_entity (Lisp_Object frame, |
| 1065 | ENUMLOGFONTEX *logical_font, |
| 1066 | NEWTEXTMETRICEX *physical_font, |
| 1067 | DWORD font_type, |
| 1068 | LOGFONT *requested_font, |
| 1069 | Lisp_Object backend) |
| 1070 | { |
| 1071 | Lisp_Object entity, tem; |
| 1072 | LOGFONT *lf = (LOGFONT*) logical_font; |
| 1073 | BYTE generic_type; |
| 1074 | DWORD full_type = physical_font->ntmTm.ntmFlags; |
| 1075 | |
| 1076 | entity = font_make_entity (); |
| 1077 | |
| 1078 | ASET (entity, FONT_TYPE_INDEX, backend); |
| 1079 | ASET (entity, FONT_REGISTRY_INDEX, w32_registry (lf->lfCharSet, font_type)); |
| 1080 | ASET (entity, FONT_OBJLIST_INDEX, Qnil); |
| 1081 | |
| 1082 | /* Foundry is difficult to get in readable form on Windows. |
| 1083 | But Emacs crashes if it is not set, so set it to something more |
| 1084 | generic. These values make xlfds compatible with Emacs 22. */ |
| 1085 | if (lf->lfOutPrecision == OUT_STRING_PRECIS) |
| 1086 | tem = Qraster; |
| 1087 | else if (lf->lfOutPrecision == OUT_STROKE_PRECIS) |
| 1088 | tem = Qoutline; |
| 1089 | else |
| 1090 | tem = Qunknown; |
| 1091 | |
| 1092 | ASET (entity, FONT_FOUNDRY_INDEX, tem); |
| 1093 | |
| 1094 | /* Save the generic family in the extra info, as it is likely to be |
| 1095 | useful to users looking for a close match. */ |
| 1096 | generic_type = physical_font->ntmTm.tmPitchAndFamily & 0xF0; |
| 1097 | if (generic_type == FF_DECORATIVE) |
| 1098 | tem = Qdecorative; |
| 1099 | else if (generic_type == FF_MODERN) |
| 1100 | tem = Qmono; |
| 1101 | else if (generic_type == FF_ROMAN) |
| 1102 | tem = Qserif; |
| 1103 | else if (generic_type == FF_SCRIPT) |
| 1104 | tem = Qscript; |
| 1105 | else if (generic_type == FF_SWISS) |
| 1106 | tem = Qsans; |
| 1107 | else |
| 1108 | tem = Qnil; |
| 1109 | |
| 1110 | ASET (entity, FONT_ADSTYLE_INDEX, tem); |
| 1111 | |
| 1112 | if (physical_font->ntmTm.tmPitchAndFamily & 0x01) |
| 1113 | ASET (entity, FONT_SPACING_INDEX, make_number (FONT_SPACING_PROPORTIONAL)); |
| 1114 | else |
| 1115 | ASET (entity, FONT_SPACING_INDEX, make_number (FONT_SPACING_CHARCELL)); |
| 1116 | |
| 1117 | if (requested_font->lfQuality != DEFAULT_QUALITY) |
| 1118 | { |
| 1119 | font_put_extra (entity, QCantialias, |
| 1120 | lispy_antialias_type (requested_font->lfQuality)); |
| 1121 | } |
| 1122 | ASET (entity, FONT_FAMILY_INDEX, |
| 1123 | intern_font_name (lf->lfFaceName)); |
| 1124 | |
| 1125 | FONT_SET_STYLE (entity, FONT_WEIGHT_INDEX, |
| 1126 | make_number (w32_decode_weight (lf->lfWeight))); |
| 1127 | FONT_SET_STYLE (entity, FONT_SLANT_INDEX, |
| 1128 | make_number (lf->lfItalic ? 200 : 100)); |
| 1129 | /* TODO: PANOSE struct has this info, but need to call GetOutlineTextMetrics |
| 1130 | to get it. */ |
| 1131 | FONT_SET_STYLE (entity, FONT_WIDTH_INDEX, make_number (100)); |
| 1132 | |
| 1133 | if (font_type & RASTER_FONTTYPE) |
| 1134 | ASET (entity, FONT_SIZE_INDEX, |
| 1135 | make_number (physical_font->ntmTm.tmHeight |
| 1136 | + physical_font->ntmTm.tmExternalLeading)); |
| 1137 | else |
| 1138 | ASET (entity, FONT_SIZE_INDEX, make_number (0)); |
| 1139 | |
| 1140 | /* Cache Unicode codepoints covered by this font, as there is no other way |
| 1141 | of getting this information easily. */ |
| 1142 | if (font_type & TRUETYPE_FONTTYPE) |
| 1143 | { |
| 1144 | tem = font_supported_scripts (&physical_font->ntmFontSig); |
| 1145 | if (!NILP (tem)) |
| 1146 | font_put_extra (entity, QCscript, tem); |
| 1147 | } |
| 1148 | |
| 1149 | /* This information is not fully available when opening fonts, so |
| 1150 | save it here. Only Windows 2000 and later return information |
| 1151 | about opentype and type1 fonts, so need a fallback for detecting |
| 1152 | truetype so that this information is not any worse than we could |
| 1153 | have obtained later. */ |
| 1154 | if (EQ (backend, Quniscribe) && (full_type & NTMFLAGS_OPENTYPE)) |
| 1155 | tem = intern ("opentype"); |
| 1156 | else if (font_type & TRUETYPE_FONTTYPE) |
| 1157 | tem = intern ("truetype"); |
| 1158 | else if (full_type & NTM_PS_OPENTYPE) |
| 1159 | tem = intern ("postscript"); |
| 1160 | else if (full_type & NTM_TYPE1) |
| 1161 | tem = intern ("type1"); |
| 1162 | else if (font_type & RASTER_FONTTYPE) |
| 1163 | tem = intern ("w32bitmap"); |
| 1164 | else |
| 1165 | tem = intern ("w32vector"); |
| 1166 | |
| 1167 | font_put_extra (entity, QCformat, tem); |
| 1168 | |
| 1169 | return entity; |
| 1170 | } |
| 1171 | |
| 1172 | |
| 1173 | /* Convert generic families to the family portion of lfPitchAndFamily. */ |
| 1174 | static BYTE |
| 1175 | w32_generic_family (Lisp_Object name) |
| 1176 | { |
| 1177 | /* Generic families. */ |
| 1178 | if (EQ (name, Qmonospace) || EQ (name, Qmono)) |
| 1179 | return FF_MODERN; |
| 1180 | else if (EQ (name, Qsans) || EQ (name, Qsans_serif) || EQ (name, Qsansserif)) |
| 1181 | return FF_SWISS; |
| 1182 | else if (EQ (name, Qserif)) |
| 1183 | return FF_ROMAN; |
| 1184 | else if (EQ (name, Qdecorative)) |
| 1185 | return FF_DECORATIVE; |
| 1186 | else if (EQ (name, Qscript)) |
| 1187 | return FF_SCRIPT; |
| 1188 | else |
| 1189 | return FF_DONTCARE; |
| 1190 | } |
| 1191 | |
| 1192 | static int |
| 1193 | logfonts_match (LOGFONT *font, LOGFONT *pattern) |
| 1194 | { |
| 1195 | /* Only check height for raster fonts. */ |
| 1196 | if (pattern->lfHeight && font->lfOutPrecision == OUT_STRING_PRECIS |
| 1197 | && font->lfHeight != pattern->lfHeight) |
| 1198 | return 0; |
| 1199 | |
| 1200 | /* Have some flexibility with weights. */ |
| 1201 | if (pattern->lfWeight |
| 1202 | && ((font->lfWeight < (pattern->lfWeight - 150)) |
| 1203 | || font->lfWeight > (pattern->lfWeight + 150))) |
| 1204 | return 0; |
| 1205 | |
| 1206 | /* Charset and face should be OK. Italic has to be checked |
| 1207 | against the original spec, in case we don't have any preference. */ |
| 1208 | return 1; |
| 1209 | } |
| 1210 | |
| 1211 | /* Codepage Bitfields in FONTSIGNATURE struct. */ |
| 1212 | #define CSB_JAPANESE (1 << 17) |
| 1213 | #define CSB_KOREAN ((1 << 19) | (1 << 21)) |
| 1214 | #define CSB_CHINESE ((1 << 18) | (1 << 20)) |
| 1215 | |
| 1216 | static int |
| 1217 | font_matches_spec (DWORD type, NEWTEXTMETRICEX *font, |
| 1218 | Lisp_Object spec, Lisp_Object backend, |
| 1219 | LOGFONT *logfont) |
| 1220 | { |
| 1221 | Lisp_Object extra, val; |
| 1222 | |
| 1223 | /* Check italic. Can't check logfonts, since it is a boolean field, |
| 1224 | so there is no difference between "non-italic" and "don't care". */ |
| 1225 | { |
| 1226 | int slant = FONT_SLANT_NUMERIC (spec); |
| 1227 | |
| 1228 | if (slant >= 0 |
| 1229 | && ((slant > 150 && !font->ntmTm.tmItalic) |
| 1230 | || (slant <= 150 && font->ntmTm.tmItalic))) |
| 1231 | return 0; |
| 1232 | } |
| 1233 | |
| 1234 | /* Check adstyle against generic family. */ |
| 1235 | val = AREF (spec, FONT_ADSTYLE_INDEX); |
| 1236 | if (!NILP (val)) |
| 1237 | { |
| 1238 | BYTE family = w32_generic_family (val); |
| 1239 | if (family != FF_DONTCARE |
| 1240 | && family != (font->ntmTm.tmPitchAndFamily & 0xF0)) |
| 1241 | return 0; |
| 1242 | } |
| 1243 | |
| 1244 | /* Check spacing */ |
| 1245 | val = AREF (spec, FONT_SPACING_INDEX); |
| 1246 | if (INTEGERP (val)) |
| 1247 | { |
| 1248 | int spacing = XINT (val); |
| 1249 | int proportional = (spacing < FONT_SPACING_MONO); |
| 1250 | |
| 1251 | if ((proportional && !(font->ntmTm.tmPitchAndFamily & 0x01)) |
| 1252 | || (!proportional && (font->ntmTm.tmPitchAndFamily & 0x01))) |
| 1253 | return 0; |
| 1254 | } |
| 1255 | |
| 1256 | /* Check extra parameters. */ |
| 1257 | for (extra = AREF (spec, FONT_EXTRA_INDEX); |
| 1258 | CONSP (extra); extra = XCDR (extra)) |
| 1259 | { |
| 1260 | Lisp_Object extra_entry; |
| 1261 | extra_entry = XCAR (extra); |
| 1262 | if (CONSP (extra_entry)) |
| 1263 | { |
| 1264 | Lisp_Object key = XCAR (extra_entry); |
| 1265 | |
| 1266 | val = XCDR (extra_entry); |
| 1267 | if (EQ (key, QCscript) && SYMBOLP (val)) |
| 1268 | { |
| 1269 | /* Only truetype fonts will have information about what |
| 1270 | scripts they support. This probably means the user |
| 1271 | will have to force Emacs to use raster, PostScript |
| 1272 | or ATM fonts for non-ASCII text. */ |
| 1273 | if (type & TRUETYPE_FONTTYPE) |
| 1274 | { |
| 1275 | Lisp_Object support |
| 1276 | = font_supported_scripts (&font->ntmFontSig); |
| 1277 | if (! memq_no_quit (val, support)) |
| 1278 | return 0; |
| 1279 | |
| 1280 | /* Avoid using non-Japanese fonts for Japanese, even |
| 1281 | if they claim they are capable, due to known |
| 1282 | breakage in Vista and Windows 7 fonts |
| 1283 | (bug#6029). */ |
| 1284 | if (EQ (val, Qkana) |
| 1285 | && (font->ntmTm.tmCharSet != SHIFTJIS_CHARSET |
| 1286 | || !(font->ntmFontSig.fsCsb[0] & CSB_JAPANESE))) |
| 1287 | return 0; |
| 1288 | } |
| 1289 | else |
| 1290 | { |
| 1291 | /* Return specific matches, but play it safe. Fonts |
| 1292 | that cover more than their charset would suggest |
| 1293 | are likely to be truetype or opentype fonts, |
| 1294 | covered above. */ |
| 1295 | if (EQ (val, Qlatin)) |
| 1296 | { |
| 1297 | /* Although every charset but symbol, thai and |
| 1298 | arabic contains the basic ASCII set of latin |
| 1299 | characters, Emacs expects much more. */ |
| 1300 | if (font->ntmTm.tmCharSet != ANSI_CHARSET) |
| 1301 | return 0; |
| 1302 | } |
| 1303 | else if (EQ (val, Qsymbol)) |
| 1304 | { |
| 1305 | if (font->ntmTm.tmCharSet != SYMBOL_CHARSET) |
| 1306 | return 0; |
| 1307 | } |
| 1308 | else if (EQ (val, Qcyrillic)) |
| 1309 | { |
| 1310 | if (font->ntmTm.tmCharSet != RUSSIAN_CHARSET) |
| 1311 | return 0; |
| 1312 | } |
| 1313 | else if (EQ (val, Qgreek)) |
| 1314 | { |
| 1315 | if (font->ntmTm.tmCharSet != GREEK_CHARSET) |
| 1316 | return 0; |
| 1317 | } |
| 1318 | else if (EQ (val, Qarabic)) |
| 1319 | { |
| 1320 | if (font->ntmTm.tmCharSet != ARABIC_CHARSET) |
| 1321 | return 0; |
| 1322 | } |
| 1323 | else if (EQ (val, Qhebrew)) |
| 1324 | { |
| 1325 | if (font->ntmTm.tmCharSet != HEBREW_CHARSET) |
| 1326 | return 0; |
| 1327 | } |
| 1328 | else if (EQ (val, Qthai)) |
| 1329 | { |
| 1330 | if (font->ntmTm.tmCharSet != THAI_CHARSET) |
| 1331 | return 0; |
| 1332 | } |
| 1333 | else if (EQ (val, Qkana)) |
| 1334 | { |
| 1335 | if (font->ntmTm.tmCharSet != SHIFTJIS_CHARSET) |
| 1336 | return 0; |
| 1337 | } |
| 1338 | else if (EQ (val, Qbopomofo)) |
| 1339 | { |
| 1340 | if (font->ntmTm.tmCharSet != CHINESEBIG5_CHARSET) |
| 1341 | return 0; |
| 1342 | } |
| 1343 | else if (EQ (val, Qhangul)) |
| 1344 | { |
| 1345 | if (font->ntmTm.tmCharSet != HANGUL_CHARSET |
| 1346 | && font->ntmTm.tmCharSet != JOHAB_CHARSET) |
| 1347 | return 0; |
| 1348 | } |
| 1349 | else if (EQ (val, Qhan)) |
| 1350 | { |
| 1351 | if (font->ntmTm.tmCharSet != CHINESEBIG5_CHARSET |
| 1352 | && font->ntmTm.tmCharSet != GB2312_CHARSET |
| 1353 | && font->ntmTm.tmCharSet != HANGUL_CHARSET |
| 1354 | && font->ntmTm.tmCharSet != JOHAB_CHARSET |
| 1355 | && font->ntmTm.tmCharSet != SHIFTJIS_CHARSET) |
| 1356 | return 0; |
| 1357 | } |
| 1358 | else |
| 1359 | /* Other scripts unlikely to be handled by non-truetype |
| 1360 | fonts. */ |
| 1361 | return 0; |
| 1362 | } |
| 1363 | } |
| 1364 | else if (EQ (key, QClang) && SYMBOLP (val)) |
| 1365 | { |
| 1366 | /* Just handle the CJK languages here, as the lang |
| 1367 | parameter is used to select a font with appropriate |
| 1368 | glyphs in the cjk unified ideographs block. Other fonts |
| 1369 | support for a language can be solely determined by |
| 1370 | its character coverage. */ |
| 1371 | if (EQ (val, Qja)) |
| 1372 | { |
| 1373 | if (!(font->ntmFontSig.fsCsb[0] & CSB_JAPANESE)) |
| 1374 | return 0; |
| 1375 | } |
| 1376 | else if (EQ (val, Qko)) |
| 1377 | { |
| 1378 | if (!(font->ntmFontSig.fsCsb[0] & CSB_KOREAN)) |
| 1379 | return 0; |
| 1380 | } |
| 1381 | else if (EQ (val, Qzh)) |
| 1382 | { |
| 1383 | if (!(font->ntmFontSig.fsCsb[0] & CSB_CHINESE)) |
| 1384 | return 0; |
| 1385 | } |
| 1386 | else |
| 1387 | /* Any other language, we don't recognize it. Only the above |
| 1388 | currently appear in fontset.el, so it isn't worth |
| 1389 | creating a mapping table of codepages/scripts to languages |
| 1390 | or opening the font to see if there are any language tags |
| 1391 | in it that the Windows API does not expose. Fontset |
| 1392 | spec should have a fallback, as some backends do |
| 1393 | not recognize language at all. */ |
| 1394 | return 0; |
| 1395 | } |
| 1396 | else if (EQ (key, QCotf) && CONSP (val)) |
| 1397 | { |
| 1398 | /* OTF features only supported by the uniscribe backend. */ |
| 1399 | if (EQ (backend, Quniscribe)) |
| 1400 | { |
| 1401 | if (!uniscribe_check_otf (logfont, val)) |
| 1402 | return 0; |
| 1403 | } |
| 1404 | else |
| 1405 | return 0; |
| 1406 | } |
| 1407 | } |
| 1408 | } |
| 1409 | return 1; |
| 1410 | } |
| 1411 | |
| 1412 | static int |
| 1413 | w32font_coverage_ok (FONTSIGNATURE * coverage, BYTE charset) |
| 1414 | { |
| 1415 | DWORD subrange1 = coverage->fsUsb[1]; |
| 1416 | |
| 1417 | #define SUBRANGE1_HAN_MASK 0x08000000 |
| 1418 | #define SUBRANGE1_HANGEUL_MASK 0x01000000 |
| 1419 | #define SUBRANGE1_JAPANESE_MASK (0x00060000 | SUBRANGE1_HAN_MASK) |
| 1420 | |
| 1421 | if (charset == GB2312_CHARSET || charset == CHINESEBIG5_CHARSET) |
| 1422 | { |
| 1423 | return (subrange1 & SUBRANGE1_HAN_MASK) == SUBRANGE1_HAN_MASK; |
| 1424 | } |
| 1425 | else if (charset == SHIFTJIS_CHARSET) |
| 1426 | { |
| 1427 | return (subrange1 & SUBRANGE1_JAPANESE_MASK) == SUBRANGE1_JAPANESE_MASK; |
| 1428 | } |
| 1429 | else if (charset == HANGEUL_CHARSET) |
| 1430 | { |
| 1431 | return (subrange1 & SUBRANGE1_HANGEUL_MASK) == SUBRANGE1_HANGEUL_MASK; |
| 1432 | } |
| 1433 | |
| 1434 | return 1; |
| 1435 | } |
| 1436 | |
| 1437 | #ifndef WINDOWSNT |
| 1438 | #define _strlwr strlwr |
| 1439 | #endif /* !WINDOWSNT */ |
| 1440 | |
| 1441 | static int |
| 1442 | check_face_name (LOGFONT *font, char *full_name) |
| 1443 | { |
| 1444 | char full_iname[LF_FULLFACESIZE+1]; |
| 1445 | |
| 1446 | /* Just check for names known to cause problems, since the full name |
| 1447 | can contain expanded abbreviations, prefixed foundry, postfixed |
| 1448 | style, the latter of which sometimes differs from the style indicated |
| 1449 | in the shorter name (eg Lt becomes Light or even Extra Light) */ |
| 1450 | |
| 1451 | /* Helvetica is mapped to Arial in Windows, but if a Type-1 Helvetica is |
| 1452 | installed, we run into problems with the Uniscribe backend which tries |
| 1453 | to avoid non-truetype fonts, and ends up mixing the Type-1 Helvetica |
| 1454 | with Arial's characteristics, since that attempt to use TrueType works |
| 1455 | some places, but not others. */ |
| 1456 | if (!xstrcasecmp (font->lfFaceName, "helvetica")) |
| 1457 | { |
| 1458 | strncpy (full_iname, full_name, LF_FULLFACESIZE); |
| 1459 | full_iname[LF_FULLFACESIZE] = 0; |
| 1460 | _strlwr (full_iname); |
| 1461 | return strstr ("helvetica", full_iname) != NULL; |
| 1462 | } |
| 1463 | /* Same for Helv. */ |
| 1464 | if (!xstrcasecmp (font->lfFaceName, "helv")) |
| 1465 | { |
| 1466 | strncpy (full_iname, full_name, LF_FULLFACESIZE); |
| 1467 | full_iname[LF_FULLFACESIZE] = 0; |
| 1468 | _strlwr (full_iname); |
| 1469 | return strstr ("helv", full_iname) != NULL; |
| 1470 | } |
| 1471 | |
| 1472 | /* Since Times is mapped to Times New Roman, a substring |
| 1473 | match is not sufficient to filter out the bogus match. */ |
| 1474 | else if (!xstrcasecmp (font->lfFaceName, "times")) |
| 1475 | return xstrcasecmp (full_name, "times") == 0; |
| 1476 | |
| 1477 | return 1; |
| 1478 | } |
| 1479 | |
| 1480 | |
| 1481 | /* Callback function for EnumFontFamiliesEx. |
| 1482 | * Checks if a font matches everything we are trying to check against, |
| 1483 | * and if so, adds it to a list. Both the data we are checking against |
| 1484 | * and the list to which the fonts are added are passed in via the |
| 1485 | * lparam argument, in the form of a font_callback_data struct. */ |
| 1486 | static int CALLBACK |
| 1487 | add_font_entity_to_list (ENUMLOGFONTEX *logical_font, |
| 1488 | NEWTEXTMETRICEX *physical_font, |
| 1489 | DWORD font_type, LPARAM lParam) |
| 1490 | { |
| 1491 | struct font_callback_data *match_data |
| 1492 | = (struct font_callback_data *) lParam; |
| 1493 | Lisp_Object backend = match_data->opentype_only ? Quniscribe : Qgdi; |
| 1494 | Lisp_Object entity; |
| 1495 | |
| 1496 | int is_unicode = physical_font->ntmFontSig.fsUsb[3] |
| 1497 | || physical_font->ntmFontSig.fsUsb[2] |
| 1498 | || physical_font->ntmFontSig.fsUsb[1] |
| 1499 | || physical_font->ntmFontSig.fsUsb[0] & 0x3fffffff; |
| 1500 | |
| 1501 | /* Skip non matching fonts. */ |
| 1502 | |
| 1503 | /* For uniscribe backend, consider only truetype or opentype fonts |
| 1504 | that have some Unicode coverage. */ |
| 1505 | if (match_data->opentype_only |
| 1506 | && ((!(physical_font->ntmTm.ntmFlags & NTMFLAGS_OPENTYPE) |
| 1507 | && !(font_type & TRUETYPE_FONTTYPE)) |
| 1508 | || !is_unicode)) |
| 1509 | return 1; |
| 1510 | |
| 1511 | /* Ensure a match. */ |
| 1512 | if (!logfonts_match (&logical_font->elfLogFont, &match_data->pattern) |
| 1513 | || !font_matches_spec (font_type, physical_font, |
| 1514 | match_data->orig_font_spec, backend, |
| 1515 | &logical_font->elfLogFont) |
| 1516 | || !w32font_coverage_ok (&physical_font->ntmFontSig, |
| 1517 | match_data->pattern.lfCharSet)) |
| 1518 | return 1; |
| 1519 | |
| 1520 | /* Avoid substitutions involving raster fonts (eg Helv -> MS Sans Serif) |
| 1521 | We limit this to raster fonts, because the test can catch some |
| 1522 | genuine fonts (eg the full name of DejaVu Sans Mono Light is actually |
| 1523 | DejaVu Sans Mono ExtraLight). Helvetica -> Arial substitution will |
| 1524 | therefore get through this test. Since full names can be prefixed |
| 1525 | by a foundry, we accept raster fonts if the font name is found |
| 1526 | anywhere within the full name. */ |
| 1527 | if ((logical_font->elfLogFont.lfOutPrecision == OUT_STRING_PRECIS |
| 1528 | && !strstr (logical_font->elfFullName, |
| 1529 | logical_font->elfLogFont.lfFaceName)) |
| 1530 | /* Check for well known substitutions that mess things up in the |
| 1531 | presence of Type-1 fonts of the same name. */ |
| 1532 | || (!check_face_name (&logical_font->elfLogFont, |
| 1533 | logical_font->elfFullName))) |
| 1534 | return 1; |
| 1535 | |
| 1536 | /* Make a font entity for the font. */ |
| 1537 | entity = w32_enumfont_pattern_entity (match_data->frame, logical_font, |
| 1538 | physical_font, font_type, |
| 1539 | &match_data->pattern, |
| 1540 | backend); |
| 1541 | |
| 1542 | if (!NILP (entity)) |
| 1543 | { |
| 1544 | Lisp_Object spec_charset = AREF (match_data->orig_font_spec, |
| 1545 | FONT_REGISTRY_INDEX); |
| 1546 | |
| 1547 | /* iso10646-1 fonts must contain Unicode mapping tables. */ |
| 1548 | if (EQ (spec_charset, Qiso10646_1)) |
| 1549 | { |
| 1550 | if (!is_unicode) |
| 1551 | return 1; |
| 1552 | } |
| 1553 | /* unicode-bmp fonts must contain characters from the BMP. */ |
| 1554 | else if (EQ (spec_charset, Qunicode_bmp)) |
| 1555 | { |
| 1556 | if (!physical_font->ntmFontSig.fsUsb[3] |
| 1557 | && !(physical_font->ntmFontSig.fsUsb[2] & 0xFFFFFF9E) |
| 1558 | && !(physical_font->ntmFontSig.fsUsb[1] & 0xE81FFFFF) |
| 1559 | && !(physical_font->ntmFontSig.fsUsb[0] & 0x007F001F)) |
| 1560 | return 1; |
| 1561 | } |
| 1562 | /* unicode-sip fonts must contain characters in Unicode plane 2. |
| 1563 | so look for bit 57 (surrogates) in the Unicode subranges, plus |
| 1564 | the bits for CJK ranges that include those characters. */ |
| 1565 | else if (EQ (spec_charset, Qunicode_sip)) |
| 1566 | { |
| 1567 | if (!(physical_font->ntmFontSig.fsUsb[1] & 0x02000000) |
| 1568 | || !(physical_font->ntmFontSig.fsUsb[1] & 0x28000000)) |
| 1569 | return 1; |
| 1570 | } |
| 1571 | |
| 1572 | /* This font matches. */ |
| 1573 | |
| 1574 | /* If registry was specified, ensure it is reported as the same. */ |
| 1575 | if (!NILP (spec_charset)) |
| 1576 | { |
| 1577 | /* Avoid using non-Japanese fonts for Japanese, even if they |
| 1578 | claim they are capable, due to known breakage in Vista |
| 1579 | and Windows 7 fonts (bug#6029). */ |
| 1580 | if (logical_font->elfLogFont.lfCharSet == SHIFTJIS_CHARSET |
| 1581 | && !(physical_font->ntmFontSig.fsCsb[0] & CSB_JAPANESE)) |
| 1582 | return 1; |
| 1583 | else |
| 1584 | ASET (entity, FONT_REGISTRY_INDEX, spec_charset); |
| 1585 | } |
| 1586 | /* Otherwise if using the uniscribe backend, report ANSI and DEFAULT |
| 1587 | fonts as Unicode and skip other charsets. */ |
| 1588 | else if (match_data->opentype_only) |
| 1589 | { |
| 1590 | if (logical_font->elfLogFont.lfCharSet == ANSI_CHARSET |
| 1591 | || logical_font->elfLogFont.lfCharSet == DEFAULT_CHARSET) |
| 1592 | ASET (entity, FONT_REGISTRY_INDEX, Qiso10646_1); |
| 1593 | else |
| 1594 | return 1; |
| 1595 | } |
| 1596 | |
| 1597 | /* Add this font to the list. */ |
| 1598 | match_data->list = Fcons (entity, match_data->list); |
| 1599 | } |
| 1600 | return 1; |
| 1601 | } |
| 1602 | |
| 1603 | /* Callback function for EnumFontFamiliesEx. |
| 1604 | * Terminates the search once we have a match. */ |
| 1605 | static int CALLBACK |
| 1606 | add_one_font_entity_to_list (ENUMLOGFONTEX *logical_font, |
| 1607 | NEWTEXTMETRICEX *physical_font, |
| 1608 | DWORD font_type, LPARAM lParam) |
| 1609 | { |
| 1610 | struct font_callback_data *match_data |
| 1611 | = (struct font_callback_data *) lParam; |
| 1612 | add_font_entity_to_list (logical_font, physical_font, font_type, lParam); |
| 1613 | |
| 1614 | /* If we have a font in the list, terminate the search. */ |
| 1615 | return NILP (match_data->list); |
| 1616 | } |
| 1617 | |
| 1618 | /* Old function to convert from x to w32 charset, from w32fns.c. */ |
| 1619 | static LONG |
| 1620 | x_to_w32_charset (char * lpcs) |
| 1621 | { |
| 1622 | Lisp_Object this_entry, w32_charset; |
| 1623 | char *charset; |
| 1624 | int len = strlen (lpcs); |
| 1625 | |
| 1626 | /* Support "*-#nnn" format for unknown charsets. */ |
| 1627 | if (strncmp (lpcs, "*-#", 3) == 0) |
| 1628 | return atoi (lpcs + 3); |
| 1629 | |
| 1630 | /* All Windows fonts qualify as Unicode. */ |
| 1631 | if (!strncmp (lpcs, "iso10646", 8)) |
| 1632 | return DEFAULT_CHARSET; |
| 1633 | |
| 1634 | /* Handle wildcards by ignoring them; eg. treat "big5*-*" as "big5". */ |
| 1635 | charset = alloca (len + 1); |
| 1636 | strcpy (charset, lpcs); |
| 1637 | lpcs = strchr (charset, '*'); |
| 1638 | if (lpcs) |
| 1639 | *lpcs = '\0'; |
| 1640 | |
| 1641 | /* Look through w32-charset-info-alist for the character set. |
| 1642 | Format of each entry is |
| 1643 | (CHARSET_NAME . (WINDOWS_CHARSET . CODEPAGE)). |
| 1644 | */ |
| 1645 | this_entry = Fassoc (build_string (charset), Vw32_charset_info_alist); |
| 1646 | |
| 1647 | if (NILP (this_entry)) |
| 1648 | { |
| 1649 | /* At startup, we want iso8859-1 fonts to come up properly. */ |
| 1650 | if (xstrcasecmp (charset, "iso8859-1") == 0) |
| 1651 | return ANSI_CHARSET; |
| 1652 | else |
| 1653 | return DEFAULT_CHARSET; |
| 1654 | } |
| 1655 | |
| 1656 | w32_charset = Fcar (Fcdr (this_entry)); |
| 1657 | |
| 1658 | /* Translate Lisp symbol to number. */ |
| 1659 | if (EQ (w32_charset, Qw32_charset_ansi)) |
| 1660 | return ANSI_CHARSET; |
| 1661 | if (EQ (w32_charset, Qw32_charset_symbol)) |
| 1662 | return SYMBOL_CHARSET; |
| 1663 | if (EQ (w32_charset, Qw32_charset_shiftjis)) |
| 1664 | return SHIFTJIS_CHARSET; |
| 1665 | if (EQ (w32_charset, Qw32_charset_hangeul)) |
| 1666 | return HANGEUL_CHARSET; |
| 1667 | if (EQ (w32_charset, Qw32_charset_chinesebig5)) |
| 1668 | return CHINESEBIG5_CHARSET; |
| 1669 | if (EQ (w32_charset, Qw32_charset_gb2312)) |
| 1670 | return GB2312_CHARSET; |
| 1671 | if (EQ (w32_charset, Qw32_charset_oem)) |
| 1672 | return OEM_CHARSET; |
| 1673 | if (EQ (w32_charset, Qw32_charset_johab)) |
| 1674 | return JOHAB_CHARSET; |
| 1675 | if (EQ (w32_charset, Qw32_charset_easteurope)) |
| 1676 | return EASTEUROPE_CHARSET; |
| 1677 | if (EQ (w32_charset, Qw32_charset_turkish)) |
| 1678 | return TURKISH_CHARSET; |
| 1679 | if (EQ (w32_charset, Qw32_charset_baltic)) |
| 1680 | return BALTIC_CHARSET; |
| 1681 | if (EQ (w32_charset, Qw32_charset_russian)) |
| 1682 | return RUSSIAN_CHARSET; |
| 1683 | if (EQ (w32_charset, Qw32_charset_arabic)) |
| 1684 | return ARABIC_CHARSET; |
| 1685 | if (EQ (w32_charset, Qw32_charset_greek)) |
| 1686 | return GREEK_CHARSET; |
| 1687 | if (EQ (w32_charset, Qw32_charset_hebrew)) |
| 1688 | return HEBREW_CHARSET; |
| 1689 | if (EQ (w32_charset, Qw32_charset_vietnamese)) |
| 1690 | return VIETNAMESE_CHARSET; |
| 1691 | if (EQ (w32_charset, Qw32_charset_thai)) |
| 1692 | return THAI_CHARSET; |
| 1693 | if (EQ (w32_charset, Qw32_charset_mac)) |
| 1694 | return MAC_CHARSET; |
| 1695 | |
| 1696 | return DEFAULT_CHARSET; |
| 1697 | } |
| 1698 | |
| 1699 | |
| 1700 | /* Convert a Lisp font registry (symbol) to a windows charset. */ |
| 1701 | static LONG |
| 1702 | registry_to_w32_charset (Lisp_Object charset) |
| 1703 | { |
| 1704 | if (EQ (charset, Qiso10646_1) || EQ (charset, Qunicode_bmp) |
| 1705 | || EQ (charset, Qunicode_sip)) |
| 1706 | return DEFAULT_CHARSET; /* UNICODE_CHARSET not defined in MingW32 */ |
| 1707 | else if (EQ (charset, Qiso8859_1)) |
| 1708 | return ANSI_CHARSET; |
| 1709 | else if (SYMBOLP (charset)) |
| 1710 | return x_to_w32_charset (SDATA (SYMBOL_NAME (charset))); |
| 1711 | else |
| 1712 | return DEFAULT_CHARSET; |
| 1713 | } |
| 1714 | |
| 1715 | /* Old function to convert from w32 to x charset, from w32fns.c. */ |
| 1716 | static char * |
| 1717 | w32_to_x_charset (int fncharset, char *matching) |
| 1718 | { |
| 1719 | static char buf[32]; |
| 1720 | Lisp_Object charset_type; |
| 1721 | int match_len = 0; |
| 1722 | |
| 1723 | if (matching) |
| 1724 | { |
| 1725 | /* If fully specified, accept it as it is. Otherwise use a |
| 1726 | substring match. */ |
| 1727 | char *wildcard = strchr (matching, '*'); |
| 1728 | if (wildcard) |
| 1729 | *wildcard = '\0'; |
| 1730 | else if (strchr (matching, '-')) |
| 1731 | return matching; |
| 1732 | |
| 1733 | match_len = strlen (matching); |
| 1734 | } |
| 1735 | |
| 1736 | switch (fncharset) |
| 1737 | { |
| 1738 | case ANSI_CHARSET: |
| 1739 | /* Handle startup case of w32-charset-info-alist not |
| 1740 | being set up yet. */ |
| 1741 | if (NILP (Vw32_charset_info_alist)) |
| 1742 | return "iso8859-1"; |
| 1743 | charset_type = Qw32_charset_ansi; |
| 1744 | break; |
| 1745 | case DEFAULT_CHARSET: |
| 1746 | charset_type = Qw32_charset_default; |
| 1747 | break; |
| 1748 | case SYMBOL_CHARSET: |
| 1749 | charset_type = Qw32_charset_symbol; |
| 1750 | break; |
| 1751 | case SHIFTJIS_CHARSET: |
| 1752 | charset_type = Qw32_charset_shiftjis; |
| 1753 | break; |
| 1754 | case HANGEUL_CHARSET: |
| 1755 | charset_type = Qw32_charset_hangeul; |
| 1756 | break; |
| 1757 | case GB2312_CHARSET: |
| 1758 | charset_type = Qw32_charset_gb2312; |
| 1759 | break; |
| 1760 | case CHINESEBIG5_CHARSET: |
| 1761 | charset_type = Qw32_charset_chinesebig5; |
| 1762 | break; |
| 1763 | case OEM_CHARSET: |
| 1764 | charset_type = Qw32_charset_oem; |
| 1765 | break; |
| 1766 | case EASTEUROPE_CHARSET: |
| 1767 | charset_type = Qw32_charset_easteurope; |
| 1768 | break; |
| 1769 | case TURKISH_CHARSET: |
| 1770 | charset_type = Qw32_charset_turkish; |
| 1771 | break; |
| 1772 | case BALTIC_CHARSET: |
| 1773 | charset_type = Qw32_charset_baltic; |
| 1774 | break; |
| 1775 | case RUSSIAN_CHARSET: |
| 1776 | charset_type = Qw32_charset_russian; |
| 1777 | break; |
| 1778 | case ARABIC_CHARSET: |
| 1779 | charset_type = Qw32_charset_arabic; |
| 1780 | break; |
| 1781 | case GREEK_CHARSET: |
| 1782 | charset_type = Qw32_charset_greek; |
| 1783 | break; |
| 1784 | case HEBREW_CHARSET: |
| 1785 | charset_type = Qw32_charset_hebrew; |
| 1786 | break; |
| 1787 | case VIETNAMESE_CHARSET: |
| 1788 | charset_type = Qw32_charset_vietnamese; |
| 1789 | break; |
| 1790 | case THAI_CHARSET: |
| 1791 | charset_type = Qw32_charset_thai; |
| 1792 | break; |
| 1793 | case MAC_CHARSET: |
| 1794 | charset_type = Qw32_charset_mac; |
| 1795 | break; |
| 1796 | case JOHAB_CHARSET: |
| 1797 | charset_type = Qw32_charset_johab; |
| 1798 | break; |
| 1799 | |
| 1800 | default: |
| 1801 | /* Encode numerical value of unknown charset. */ |
| 1802 | sprintf (buf, "*-#%u", fncharset); |
| 1803 | return buf; |
| 1804 | } |
| 1805 | |
| 1806 | { |
| 1807 | Lisp_Object rest; |
| 1808 | char * best_match = NULL; |
| 1809 | int matching_found = 0; |
| 1810 | |
| 1811 | /* Look through w32-charset-info-alist for the character set. |
| 1812 | Prefer ISO codepages, and prefer lower numbers in the ISO |
| 1813 | range. Only return charsets for codepages which are installed. |
| 1814 | |
| 1815 | Format of each entry is |
| 1816 | (CHARSET_NAME . (WINDOWS_CHARSET . CODEPAGE)). |
| 1817 | */ |
| 1818 | for (rest = Vw32_charset_info_alist; CONSP (rest); rest = XCDR (rest)) |
| 1819 | { |
| 1820 | char * x_charset; |
| 1821 | Lisp_Object w32_charset; |
| 1822 | Lisp_Object codepage; |
| 1823 | |
| 1824 | Lisp_Object this_entry = XCAR (rest); |
| 1825 | |
| 1826 | /* Skip invalid entries in alist. */ |
| 1827 | if (!CONSP (this_entry) || !STRINGP (XCAR (this_entry)) |
| 1828 | || !CONSP (XCDR (this_entry)) |
| 1829 | || !SYMBOLP (XCAR (XCDR (this_entry)))) |
| 1830 | continue; |
| 1831 | |
| 1832 | x_charset = SDATA (XCAR (this_entry)); |
| 1833 | w32_charset = XCAR (XCDR (this_entry)); |
| 1834 | codepage = XCDR (XCDR (this_entry)); |
| 1835 | |
| 1836 | /* Look for Same charset and a valid codepage (or non-int |
| 1837 | which means ignore). */ |
| 1838 | if (EQ (w32_charset, charset_type) |
| 1839 | && (!INTEGERP (codepage) || XINT (codepage) == CP_DEFAULT |
| 1840 | || IsValidCodePage (XINT (codepage)))) |
| 1841 | { |
| 1842 | /* If we don't have a match already, then this is the |
| 1843 | best. */ |
| 1844 | if (!best_match) |
| 1845 | { |
| 1846 | best_match = x_charset; |
| 1847 | if (matching && !strnicmp (x_charset, matching, match_len)) |
| 1848 | matching_found = 1; |
| 1849 | } |
| 1850 | /* If we already found a match for MATCHING, then |
| 1851 | only consider other matches. */ |
| 1852 | else if (matching_found |
| 1853 | && strnicmp (x_charset, matching, match_len)) |
| 1854 | continue; |
| 1855 | /* If this matches what we want, and the best so far doesn't, |
| 1856 | then this is better. */ |
| 1857 | else if (!matching_found && matching |
| 1858 | && !strnicmp (x_charset, matching, match_len)) |
| 1859 | { |
| 1860 | best_match = x_charset; |
| 1861 | matching_found = 1; |
| 1862 | } |
| 1863 | /* If this is fully specified, and the best so far isn't, |
| 1864 | then this is better. */ |
| 1865 | else if ((!strchr (best_match, '-') && strchr (x_charset, '-')) |
| 1866 | /* If this is an ISO codepage, and the best so far isn't, |
| 1867 | then this is better, but only if it fully specifies the |
| 1868 | encoding. */ |
| 1869 | || (strnicmp (best_match, "iso", 3) != 0 |
| 1870 | && strnicmp (x_charset, "iso", 3) == 0 |
| 1871 | && strchr (x_charset, '-'))) |
| 1872 | best_match = x_charset; |
| 1873 | /* If both are ISO8859 codepages, choose the one with the |
| 1874 | lowest number in the encoding field. */ |
| 1875 | else if (strnicmp (best_match, "iso8859-", 8) == 0 |
| 1876 | && strnicmp (x_charset, "iso8859-", 8) == 0) |
| 1877 | { |
| 1878 | int best_enc = atoi (best_match + 8); |
| 1879 | int this_enc = atoi (x_charset + 8); |
| 1880 | if (this_enc > 0 && this_enc < best_enc) |
| 1881 | best_match = x_charset; |
| 1882 | } |
| 1883 | } |
| 1884 | } |
| 1885 | |
| 1886 | /* If no match, encode the numeric value. */ |
| 1887 | if (!best_match) |
| 1888 | { |
| 1889 | sprintf (buf, "*-#%u", fncharset); |
| 1890 | return buf; |
| 1891 | } |
| 1892 | |
| 1893 | strncpy (buf, best_match, 31); |
| 1894 | /* If the charset is not fully specified, put -0 on the end. */ |
| 1895 | if (!strchr (best_match, '-')) |
| 1896 | { |
| 1897 | int pos = strlen (best_match); |
| 1898 | /* Charset specifiers shouldn't be very long. If it is a made |
| 1899 | up one, truncating it should not do any harm since it isn't |
| 1900 | recognized anyway. */ |
| 1901 | if (pos > 29) |
| 1902 | pos = 29; |
| 1903 | strcpy (buf + pos, "-0"); |
| 1904 | } |
| 1905 | buf[31] = '\0'; |
| 1906 | return buf; |
| 1907 | } |
| 1908 | } |
| 1909 | |
| 1910 | static Lisp_Object |
| 1911 | w32_registry (LONG w32_charset, DWORD font_type) |
| 1912 | { |
| 1913 | char *charset; |
| 1914 | |
| 1915 | /* If charset is defaulted, charset is Unicode or unknown, depending on |
| 1916 | font type. */ |
| 1917 | if (w32_charset == DEFAULT_CHARSET) |
| 1918 | return font_type == TRUETYPE_FONTTYPE ? Qiso10646_1 : Qunknown; |
| 1919 | |
| 1920 | charset = w32_to_x_charset (w32_charset, NULL); |
| 1921 | return font_intern_prop (charset, strlen (charset), 1); |
| 1922 | } |
| 1923 | |
| 1924 | static int |
| 1925 | w32_decode_weight (int fnweight) |
| 1926 | { |
| 1927 | if (fnweight >= FW_HEAVY) return 210; |
| 1928 | if (fnweight >= FW_EXTRABOLD) return 205; |
| 1929 | if (fnweight >= FW_BOLD) return 200; |
| 1930 | if (fnweight >= FW_SEMIBOLD) return 180; |
| 1931 | if (fnweight >= FW_NORMAL) return 100; |
| 1932 | if (fnweight >= FW_LIGHT) return 50; |
| 1933 | if (fnweight >= FW_EXTRALIGHT) return 40; |
| 1934 | if (fnweight > FW_THIN) return 20; |
| 1935 | return 0; |
| 1936 | } |
| 1937 | |
| 1938 | static int |
| 1939 | w32_encode_weight (int n) |
| 1940 | { |
| 1941 | if (n >= 210) return FW_HEAVY; |
| 1942 | if (n >= 205) return FW_EXTRABOLD; |
| 1943 | if (n >= 200) return FW_BOLD; |
| 1944 | if (n >= 180) return FW_SEMIBOLD; |
| 1945 | if (n >= 100) return FW_NORMAL; |
| 1946 | if (n >= 50) return FW_LIGHT; |
| 1947 | if (n >= 40) return FW_EXTRALIGHT; |
| 1948 | if (n >= 20) return FW_THIN; |
| 1949 | return 0; |
| 1950 | } |
| 1951 | |
| 1952 | /* Convert a Windows font weight into one of the weights supported |
| 1953 | by fontconfig (see font.c:font_parse_fcname). */ |
| 1954 | static Lisp_Object |
| 1955 | w32_to_fc_weight (int n) |
| 1956 | { |
| 1957 | if (n >= FW_EXTRABOLD) return intern ("black"); |
| 1958 | if (n >= FW_BOLD) return intern ("bold"); |
| 1959 | if (n >= FW_SEMIBOLD) return intern ("demibold"); |
| 1960 | if (n >= FW_NORMAL) return intern ("medium"); |
| 1961 | return intern ("light"); |
| 1962 | } |
| 1963 | |
| 1964 | /* Fill in all the available details of LOGFONT from FONT_SPEC. */ |
| 1965 | static void |
| 1966 | fill_in_logfont (struct frame *f, LOGFONT *logfont, Lisp_Object font_spec) |
| 1967 | { |
| 1968 | Lisp_Object tmp, extra; |
| 1969 | int dpi = FRAME_RES_Y (f); |
| 1970 | |
| 1971 | tmp = AREF (font_spec, FONT_DPI_INDEX); |
| 1972 | if (INTEGERP (tmp)) |
| 1973 | { |
| 1974 | dpi = XINT (tmp); |
| 1975 | } |
| 1976 | else if (FLOATP (tmp)) |
| 1977 | { |
| 1978 | dpi = (int) (XFLOAT_DATA (tmp) + 0.5); |
| 1979 | } |
| 1980 | |
| 1981 | /* Height */ |
| 1982 | tmp = AREF (font_spec, FONT_SIZE_INDEX); |
| 1983 | if (INTEGERP (tmp)) |
| 1984 | logfont->lfHeight = -1 * XINT (tmp); |
| 1985 | else if (FLOATP (tmp)) |
| 1986 | logfont->lfHeight = (int) (-1.0 * dpi * XFLOAT_DATA (tmp) / 72.27 + 0.5); |
| 1987 | |
| 1988 | /* Escapement */ |
| 1989 | |
| 1990 | /* Orientation */ |
| 1991 | |
| 1992 | /* Weight */ |
| 1993 | tmp = AREF (font_spec, FONT_WEIGHT_INDEX); |
| 1994 | if (INTEGERP (tmp)) |
| 1995 | logfont->lfWeight = w32_encode_weight (FONT_WEIGHT_NUMERIC (font_spec)); |
| 1996 | |
| 1997 | /* Italic */ |
| 1998 | tmp = AREF (font_spec, FONT_SLANT_INDEX); |
| 1999 | if (INTEGERP (tmp)) |
| 2000 | { |
| 2001 | int slant = FONT_SLANT_NUMERIC (font_spec); |
| 2002 | logfont->lfItalic = slant > 150 ? 1 : 0; |
| 2003 | } |
| 2004 | |
| 2005 | /* Underline */ |
| 2006 | |
| 2007 | /* Strikeout */ |
| 2008 | |
| 2009 | /* Charset */ |
| 2010 | tmp = AREF (font_spec, FONT_REGISTRY_INDEX); |
| 2011 | if (! NILP (tmp)) |
| 2012 | logfont->lfCharSet = registry_to_w32_charset (tmp); |
| 2013 | else |
| 2014 | logfont->lfCharSet = DEFAULT_CHARSET; |
| 2015 | |
| 2016 | /* Out Precision */ |
| 2017 | |
| 2018 | /* Clip Precision */ |
| 2019 | |
| 2020 | /* Quality */ |
| 2021 | logfont->lfQuality = DEFAULT_QUALITY; |
| 2022 | |
| 2023 | /* Generic Family and Face Name */ |
| 2024 | logfont->lfPitchAndFamily = FF_DONTCARE | DEFAULT_PITCH; |
| 2025 | |
| 2026 | tmp = AREF (font_spec, FONT_FAMILY_INDEX); |
| 2027 | if (! NILP (tmp)) |
| 2028 | { |
| 2029 | logfont->lfPitchAndFamily = w32_generic_family (tmp) | DEFAULT_PITCH; |
| 2030 | if ((logfont->lfPitchAndFamily & 0xF0) != FF_DONTCARE) |
| 2031 | ; /* Font name was generic, don't fill in font name. */ |
| 2032 | /* Font families are interned, but allow for strings also in case of |
| 2033 | user input. */ |
| 2034 | else if (SYMBOLP (tmp)) |
| 2035 | { |
| 2036 | strncpy (logfont->lfFaceName, |
| 2037 | SDATA (ENCODE_SYSTEM (SYMBOL_NAME (tmp))), LF_FACESIZE); |
| 2038 | logfont->lfFaceName[LF_FACESIZE-1] = '\0'; |
| 2039 | } |
| 2040 | } |
| 2041 | |
| 2042 | tmp = AREF (font_spec, FONT_ADSTYLE_INDEX); |
| 2043 | if (!NILP (tmp)) |
| 2044 | { |
| 2045 | /* Override generic family. */ |
| 2046 | BYTE family = w32_generic_family (tmp); |
| 2047 | if (family != FF_DONTCARE) |
| 2048 | logfont->lfPitchAndFamily = family | DEFAULT_PITCH; |
| 2049 | } |
| 2050 | |
| 2051 | /* Set pitch based on the spacing property. */ |
| 2052 | tmp = AREF (font_spec, FONT_SPACING_INDEX); |
| 2053 | if (INTEGERP (tmp)) |
| 2054 | { |
| 2055 | int spacing = XINT (tmp); |
| 2056 | if (spacing < FONT_SPACING_MONO) |
| 2057 | logfont->lfPitchAndFamily |
| 2058 | = (logfont->lfPitchAndFamily & 0xF0) | VARIABLE_PITCH; |
| 2059 | else |
| 2060 | logfont->lfPitchAndFamily |
| 2061 | = (logfont->lfPitchAndFamily & 0xF0) | FIXED_PITCH; |
| 2062 | } |
| 2063 | |
| 2064 | /* Process EXTRA info. */ |
| 2065 | for (extra = AREF (font_spec, FONT_EXTRA_INDEX); |
| 2066 | CONSP (extra); extra = XCDR (extra)) |
| 2067 | { |
| 2068 | tmp = XCAR (extra); |
| 2069 | if (CONSP (tmp)) |
| 2070 | { |
| 2071 | Lisp_Object key, val; |
| 2072 | key = XCAR (tmp), val = XCDR (tmp); |
| 2073 | /* Only use QCscript if charset is not provided, or is Unicode |
| 2074 | and a single script is specified. This is rather crude, |
| 2075 | and is only used to narrow down the fonts returned where |
| 2076 | there is a definite match. Some scripts, such as latin, han, |
| 2077 | cjk-misc match multiple lfCharSet values, so we can't pre-filter |
| 2078 | them. */ |
| 2079 | if (EQ (key, QCscript) |
| 2080 | && logfont->lfCharSet == DEFAULT_CHARSET |
| 2081 | && SYMBOLP (val)) |
| 2082 | { |
| 2083 | if (EQ (val, Qgreek)) |
| 2084 | logfont->lfCharSet = GREEK_CHARSET; |
| 2085 | else if (EQ (val, Qhangul)) |
| 2086 | logfont->lfCharSet = HANGUL_CHARSET; |
| 2087 | else if (EQ (val, Qkana) || EQ (val, Qkanbun)) |
| 2088 | logfont->lfCharSet = SHIFTJIS_CHARSET; |
| 2089 | else if (EQ (val, Qbopomofo)) |
| 2090 | logfont->lfCharSet = CHINESEBIG5_CHARSET; |
| 2091 | /* GB 18030 supports tibetan, yi, mongolian, |
| 2092 | fonts that support it should show up if we ask for |
| 2093 | GB2312 fonts. */ |
| 2094 | else if (EQ (val, Qtibetan) || EQ (val, Qyi) |
| 2095 | || EQ (val, Qmongolian)) |
| 2096 | logfont->lfCharSet = GB2312_CHARSET; |
| 2097 | else if (EQ (val, Qhebrew)) |
| 2098 | logfont->lfCharSet = HEBREW_CHARSET; |
| 2099 | else if (EQ (val, Qarabic)) |
| 2100 | logfont->lfCharSet = ARABIC_CHARSET; |
| 2101 | else if (EQ (val, Qthai)) |
| 2102 | logfont->lfCharSet = THAI_CHARSET; |
| 2103 | } |
| 2104 | else if (EQ (key, QCantialias) && SYMBOLP (val)) |
| 2105 | { |
| 2106 | logfont->lfQuality = w32_antialias_type (val); |
| 2107 | } |
| 2108 | } |
| 2109 | } |
| 2110 | } |
| 2111 | |
| 2112 | static void |
| 2113 | list_all_matching_fonts (struct font_callback_data *match_data) |
| 2114 | { |
| 2115 | HDC dc; |
| 2116 | Lisp_Object families = w32font_list_family (XFRAME (match_data->frame)); |
| 2117 | struct frame *f = XFRAME (match_data->frame); |
| 2118 | |
| 2119 | dc = get_frame_dc (f); |
| 2120 | |
| 2121 | while (!NILP (families)) |
| 2122 | { |
| 2123 | /* Only fonts from the current locale are given localized names |
| 2124 | on Windows, so we can keep backwards compatibility with |
| 2125 | Windows 9x/ME by using non-Unicode font enumeration without |
| 2126 | sacrificing internationalization here. */ |
| 2127 | char *name; |
| 2128 | Lisp_Object family = CAR (families); |
| 2129 | families = CDR (families); |
| 2130 | if (NILP (family)) |
| 2131 | continue; |
| 2132 | else if (SYMBOLP (family)) |
| 2133 | name = SDATA (ENCODE_SYSTEM (SYMBOL_NAME (family))); |
| 2134 | else |
| 2135 | continue; |
| 2136 | |
| 2137 | strncpy (match_data->pattern.lfFaceName, name, LF_FACESIZE); |
| 2138 | match_data->pattern.lfFaceName[LF_FACESIZE - 1] = '\0'; |
| 2139 | |
| 2140 | EnumFontFamiliesEx (dc, &match_data->pattern, |
| 2141 | (FONTENUMPROC) add_font_entity_to_list, |
| 2142 | (LPARAM) match_data, 0); |
| 2143 | } |
| 2144 | |
| 2145 | release_frame_dc (f, dc); |
| 2146 | } |
| 2147 | |
| 2148 | static Lisp_Object |
| 2149 | lispy_antialias_type (BYTE type) |
| 2150 | { |
| 2151 | Lisp_Object lispy; |
| 2152 | |
| 2153 | switch (type) |
| 2154 | { |
| 2155 | case NONANTIALIASED_QUALITY: |
| 2156 | lispy = Qnone; |
| 2157 | break; |
| 2158 | case ANTIALIASED_QUALITY: |
| 2159 | lispy = Qstandard; |
| 2160 | break; |
| 2161 | case CLEARTYPE_QUALITY: |
| 2162 | lispy = Qsubpixel; |
| 2163 | break; |
| 2164 | case CLEARTYPE_NATURAL_QUALITY: |
| 2165 | lispy = Qnatural; |
| 2166 | break; |
| 2167 | default: |
| 2168 | lispy = Qnil; |
| 2169 | break; |
| 2170 | } |
| 2171 | return lispy; |
| 2172 | } |
| 2173 | |
| 2174 | /* Convert antialiasing symbols to lfQuality */ |
| 2175 | static BYTE |
| 2176 | w32_antialias_type (Lisp_Object type) |
| 2177 | { |
| 2178 | if (EQ (type, Qnone)) |
| 2179 | return NONANTIALIASED_QUALITY; |
| 2180 | else if (EQ (type, Qstandard)) |
| 2181 | return ANTIALIASED_QUALITY; |
| 2182 | else if (EQ (type, Qsubpixel)) |
| 2183 | return CLEARTYPE_QUALITY; |
| 2184 | else if (EQ (type, Qnatural)) |
| 2185 | return CLEARTYPE_NATURAL_QUALITY; |
| 2186 | else |
| 2187 | return DEFAULT_QUALITY; |
| 2188 | } |
| 2189 | |
| 2190 | /* Return a list of all the scripts that the font supports. */ |
| 2191 | static Lisp_Object |
| 2192 | font_supported_scripts (FONTSIGNATURE * sig) |
| 2193 | { |
| 2194 | DWORD * subranges = sig->fsUsb; |
| 2195 | Lisp_Object supported = Qnil; |
| 2196 | |
| 2197 | /* Match a single subrange. SYM is set if bit N is set in subranges. */ |
| 2198 | #define SUBRANGE(n,sym) \ |
| 2199 | if (subranges[(n) / 32] & (1 << ((n) % 32))) \ |
| 2200 | supported = Fcons ((sym), supported) |
| 2201 | |
| 2202 | /* Match multiple subranges. SYM is set if any MASK bit is set in |
| 2203 | subranges[0 - 3]. */ |
| 2204 | #define MASK_ANY(mask0,mask1,mask2,mask3,sym) \ |
| 2205 | if ((subranges[0] & (mask0)) || (subranges[1] & (mask1)) \ |
| 2206 | || (subranges[2] & (mask2)) || (subranges[3] & (mask3))) \ |
| 2207 | supported = Fcons ((sym), supported) |
| 2208 | |
| 2209 | SUBRANGE (0, Qlatin); |
| 2210 | /* The following count as latin too, ASCII should be present in these fonts, |
| 2211 | so don't need to mark them separately. */ |
| 2212 | /* 1: Latin-1 supplement, 2: Latin Extended A, 3: Latin Extended B. */ |
| 2213 | SUBRANGE (4, Qphonetic); |
| 2214 | /* 5: Spacing and tone modifiers, 6: Combining Diacritical Marks. */ |
| 2215 | SUBRANGE (7, Qgreek); |
| 2216 | SUBRANGE (8, Qcoptic); |
| 2217 | SUBRANGE (9, Qcyrillic); |
| 2218 | SUBRANGE (10, Qarmenian); |
| 2219 | SUBRANGE (11, Qhebrew); |
| 2220 | /* 12: Vai. */ |
| 2221 | SUBRANGE (13, Qarabic); |
| 2222 | SUBRANGE (14, Qnko); |
| 2223 | SUBRANGE (15, Qdevanagari); |
| 2224 | SUBRANGE (16, Qbengali); |
| 2225 | SUBRANGE (17, Qgurmukhi); |
| 2226 | SUBRANGE (18, Qgujarati); |
| 2227 | SUBRANGE (19, Qoriya); |
| 2228 | SUBRANGE (20, Qtamil); |
| 2229 | SUBRANGE (21, Qtelugu); |
| 2230 | SUBRANGE (22, Qkannada); |
| 2231 | SUBRANGE (23, Qmalayalam); |
| 2232 | SUBRANGE (24, Qthai); |
| 2233 | SUBRANGE (25, Qlao); |
| 2234 | SUBRANGE (26, Qgeorgian); |
| 2235 | SUBRANGE (27, Qbalinese); |
| 2236 | /* 28: Hangul Jamo. */ |
| 2237 | /* 29: Latin Extended, 30: Greek Extended, 31: Punctuation. */ |
| 2238 | /* 32-47: Symbols (defined below). */ |
| 2239 | SUBRANGE (48, Qcjk_misc); |
| 2240 | /* Match either 49: katakana or 50: hiragana for kana. */ |
| 2241 | MASK_ANY (0, 0x00060000, 0, 0, Qkana); |
| 2242 | SUBRANGE (51, Qbopomofo); |
| 2243 | /* 52: Compatibility Jamo */ |
| 2244 | SUBRANGE (53, Qphags_pa); |
| 2245 | /* 54: Enclosed CJK letters and months, 55: CJK Compatibility. */ |
| 2246 | SUBRANGE (56, Qhangul); |
| 2247 | /* 57: Surrogates. */ |
| 2248 | SUBRANGE (58, Qphoenician); |
| 2249 | SUBRANGE (59, Qhan); /* There are others, but this is the main one. */ |
| 2250 | SUBRANGE (59, Qideographic_description); /* Windows lumps this in. */ |
| 2251 | SUBRANGE (59, Qkanbun); /* And this. */ |
| 2252 | /* 60: Private use, 61: CJK strokes and compatibility. */ |
| 2253 | /* 62: Alphabetic Presentation, 63: Arabic Presentation A. */ |
| 2254 | /* 64: Combining half marks, 65: Vertical and CJK compatibility. */ |
| 2255 | /* 66: Small forms, 67: Arabic Presentation B, 68: Half and Full width. */ |
| 2256 | /* 69: Specials. */ |
| 2257 | SUBRANGE (70, Qtibetan); |
| 2258 | SUBRANGE (71, Qsyriac); |
| 2259 | SUBRANGE (72, Qthaana); |
| 2260 | SUBRANGE (73, Qsinhala); |
| 2261 | SUBRANGE (74, Qmyanmar); |
| 2262 | SUBRANGE (75, Qethiopic); |
| 2263 | SUBRANGE (76, Qcherokee); |
| 2264 | SUBRANGE (77, Qcanadian_aboriginal); |
| 2265 | SUBRANGE (78, Qogham); |
| 2266 | SUBRANGE (79, Qrunic); |
| 2267 | SUBRANGE (80, Qkhmer); |
| 2268 | SUBRANGE (81, Qmongolian); |
| 2269 | SUBRANGE (82, Qbraille); |
| 2270 | SUBRANGE (83, Qyi); |
| 2271 | SUBRANGE (84, Qbuhid); |
| 2272 | SUBRANGE (84, Qhanunoo); |
| 2273 | SUBRANGE (84, Qtagalog); |
| 2274 | SUBRANGE (84, Qtagbanwa); |
| 2275 | SUBRANGE (85, Qold_italic); |
| 2276 | SUBRANGE (86, Qgothic); |
| 2277 | SUBRANGE (87, Qdeseret); |
| 2278 | SUBRANGE (88, Qbyzantine_musical_symbol); |
| 2279 | SUBRANGE (88, Qmusical_symbol); /* Windows doesn't distinguish these. */ |
| 2280 | SUBRANGE (89, Qmathematical); |
| 2281 | /* 90: Private use, 91: Variation selectors, 92: Tags. */ |
| 2282 | SUBRANGE (93, Qlimbu); |
| 2283 | SUBRANGE (94, Qtai_le); |
| 2284 | /* 95: New Tai Le */ |
| 2285 | SUBRANGE (90, Qbuginese); |
| 2286 | SUBRANGE (97, Qglagolitic); |
| 2287 | SUBRANGE (98, Qtifinagh); |
| 2288 | /* 99: Yijing Hexagrams. */ |
| 2289 | SUBRANGE (100, Qsyloti_nagri); |
| 2290 | SUBRANGE (101, Qlinear_b); |
| 2291 | /* 102: Ancient Greek Numbers. */ |
| 2292 | SUBRANGE (103, Qugaritic); |
| 2293 | SUBRANGE (104, Qold_persian); |
| 2294 | SUBRANGE (105, Qshavian); |
| 2295 | SUBRANGE (106, Qosmanya); |
| 2296 | SUBRANGE (107, Qcypriot); |
| 2297 | SUBRANGE (108, Qkharoshthi); |
| 2298 | /* 109: Tai Xuan Jing. */ |
| 2299 | SUBRANGE (110, Qcuneiform); |
| 2300 | /* 111: Counting Rods, 112: Sundanese, 113: Lepcha, 114: Ol Chiki. */ |
| 2301 | /* 115: Saurashtra, 116: Kayah Li, 117: Rejang. */ |
| 2302 | SUBRANGE (118, Qcham); |
| 2303 | /* 119: Ancient symbols, 120: Phaistos Disc. */ |
| 2304 | /* 121: Carian, Lycian, Lydian, 122: Dominoes, Mahjong tiles. */ |
| 2305 | /* 123-127: Reserved. */ |
| 2306 | |
| 2307 | /* There isn't really a main symbol range, so include symbol if any |
| 2308 | relevant range is set. */ |
| 2309 | MASK_ANY (0x8000000, 0x0000FFFF, 0, 0, Qsymbol); |
| 2310 | |
| 2311 | /* Missing: Tai Viet (U+AA80-U+AADF). */ |
| 2312 | #undef SUBRANGE |
| 2313 | #undef MASK_ANY |
| 2314 | |
| 2315 | return supported; |
| 2316 | } |
| 2317 | |
| 2318 | /* Generate a full name for a Windows font. |
| 2319 | The full name is in fcname format, with weight, slant and antialiasing |
| 2320 | specified if they are not "normal". */ |
| 2321 | static int |
| 2322 | w32font_full_name (LOGFONT * font, Lisp_Object font_obj, |
| 2323 | int pixel_size, char *name, int nbytes) |
| 2324 | { |
| 2325 | int len, height, outline; |
| 2326 | char *p; |
| 2327 | Lisp_Object antialiasing, weight = Qnil; |
| 2328 | |
| 2329 | len = strlen (font->lfFaceName); |
| 2330 | |
| 2331 | outline = EQ (AREF (font_obj, FONT_FOUNDRY_INDEX), Qoutline); |
| 2332 | |
| 2333 | /* Represent size of scalable fonts by point size. But use pixelsize for |
| 2334 | raster fonts to indicate that they are exactly that size. */ |
| 2335 | if (outline) |
| 2336 | len += 11; /* -SIZE */ |
| 2337 | else |
| 2338 | len += 21; |
| 2339 | |
| 2340 | if (font->lfItalic) |
| 2341 | len += 7; /* :italic */ |
| 2342 | |
| 2343 | if (font->lfWeight && font->lfWeight != FW_NORMAL) |
| 2344 | { |
| 2345 | weight = w32_to_fc_weight (font->lfWeight); |
| 2346 | len += 1 + SBYTES (SYMBOL_NAME (weight)); /* :WEIGHT */ |
| 2347 | } |
| 2348 | |
| 2349 | antialiasing = lispy_antialias_type (font->lfQuality); |
| 2350 | if (! NILP (antialiasing)) |
| 2351 | len += 11 + SBYTES (SYMBOL_NAME (antialiasing)); /* :antialias=NAME */ |
| 2352 | |
| 2353 | /* Check that the buffer is big enough */ |
| 2354 | if (len > nbytes) |
| 2355 | return -1; |
| 2356 | |
| 2357 | p = name; |
| 2358 | p += sprintf (p, "%s", font->lfFaceName); |
| 2359 | |
| 2360 | height = font->lfHeight ? eabs (font->lfHeight) : pixel_size; |
| 2361 | |
| 2362 | if (height > 0) |
| 2363 | { |
| 2364 | if (outline) |
| 2365 | { |
| 2366 | float pointsize = height * 72.0 / one_w32_display_info.resy; |
| 2367 | /* Round to nearest half point. floor is used, since round is not |
| 2368 | supported in MS library. */ |
| 2369 | pointsize = floor (pointsize * 2 + 0.5) / 2; |
| 2370 | p += sprintf (p, "-%1.1f", pointsize); |
| 2371 | } |
| 2372 | else |
| 2373 | p += sprintf (p, ":pixelsize=%d", height); |
| 2374 | } |
| 2375 | |
| 2376 | if (SYMBOLP (weight) && ! NILP (weight)) |
| 2377 | p += sprintf (p, ":%s", SDATA (SYMBOL_NAME (weight))); |
| 2378 | |
| 2379 | if (font->lfItalic) |
| 2380 | p += sprintf (p, ":italic"); |
| 2381 | |
| 2382 | if (SYMBOLP (antialiasing) && ! NILP (antialiasing)) |
| 2383 | p += sprintf (p, ":antialias=%s", SDATA (SYMBOL_NAME (antialiasing))); |
| 2384 | |
| 2385 | return (p - name); |
| 2386 | } |
| 2387 | |
| 2388 | /* Convert a logfont and point size into a fontconfig style font name. |
| 2389 | POINTSIZE is in tenths of points. |
| 2390 | If SIZE indicates the size of buffer FCNAME, into which the font name |
| 2391 | is written. If the buffer is not large enough to contain the name, |
| 2392 | the function returns -1, otherwise it returns the number of bytes |
| 2393 | written to FCNAME. */ |
| 2394 | static int |
| 2395 | logfont_to_fcname (LOGFONT* font, int pointsize, char *fcname, int size) |
| 2396 | { |
| 2397 | int len, height; |
| 2398 | char *p = fcname; |
| 2399 | Lisp_Object weight = Qnil; |
| 2400 | |
| 2401 | len = strlen (font->lfFaceName) + 2; |
| 2402 | height = pointsize / 10; |
| 2403 | while (height /= 10) |
| 2404 | len++; |
| 2405 | |
| 2406 | if (pointsize % 10) |
| 2407 | len += 2; |
| 2408 | |
| 2409 | if (font->lfItalic) |
| 2410 | len += 7; /* :italic */ |
| 2411 | if (font->lfWeight && font->lfWeight != FW_NORMAL) |
| 2412 | { |
| 2413 | weight = w32_to_fc_weight (font->lfWeight); |
| 2414 | len += SBYTES (SYMBOL_NAME (weight)) + 1; |
| 2415 | } |
| 2416 | |
| 2417 | if (len > size) |
| 2418 | return -1; |
| 2419 | |
| 2420 | p += sprintf (p, "%s-%d", font->lfFaceName, pointsize / 10); |
| 2421 | if (pointsize % 10) |
| 2422 | p += sprintf (p, ".%d", pointsize % 10); |
| 2423 | |
| 2424 | if (SYMBOLP (weight) && !NILP (weight)) |
| 2425 | p += sprintf (p, ":%s", SDATA (SYMBOL_NAME (weight))); |
| 2426 | |
| 2427 | if (font->lfItalic) |
| 2428 | p += sprintf (p, ":italic"); |
| 2429 | |
| 2430 | return (p - fcname); |
| 2431 | } |
| 2432 | |
| 2433 | static void |
| 2434 | compute_metrics (HDC dc, struct w32font_info *w32_font, unsigned int code, |
| 2435 | struct w32_metric_cache *metrics) |
| 2436 | { |
| 2437 | GLYPHMETRICS gm; |
| 2438 | MAT2 transform; |
| 2439 | unsigned int options = GGO_METRICS; |
| 2440 | INT width; |
| 2441 | |
| 2442 | if (w32_font->glyph_idx) |
| 2443 | options |= GGO_GLYPH_INDEX; |
| 2444 | |
| 2445 | memset (&transform, 0, sizeof (transform)); |
| 2446 | transform.eM11.value = 1; |
| 2447 | transform.eM22.value = 1; |
| 2448 | |
| 2449 | if (get_glyph_outline_w (dc, code, options, &gm, 0, NULL, &transform) |
| 2450 | != GDI_ERROR) |
| 2451 | { |
| 2452 | metrics->lbearing = gm.gmptGlyphOrigin.x; |
| 2453 | metrics->rbearing = gm.gmptGlyphOrigin.x + gm.gmBlackBoxX; |
| 2454 | metrics->width = gm.gmCellIncX; |
| 2455 | metrics->status = W32METRIC_SUCCESS; |
| 2456 | } |
| 2457 | else if (get_char_width_32_w (dc, code, code, &width) != 0) |
| 2458 | { |
| 2459 | metrics->lbearing = 0; |
| 2460 | metrics->rbearing = width; |
| 2461 | metrics->width = width; |
| 2462 | metrics->status = W32METRIC_SUCCESS; |
| 2463 | } |
| 2464 | else |
| 2465 | metrics->status = W32METRIC_FAIL; |
| 2466 | } |
| 2467 | |
| 2468 | DEFUN ("x-select-font", Fx_select_font, Sx_select_font, 0, 2, 0, |
| 2469 | doc: /* Read a font name using a W32 font selection dialog. |
| 2470 | Return fontconfig style font string corresponding to the selection. |
| 2471 | |
| 2472 | If FRAME is omitted or nil, it defaults to the selected frame. |
| 2473 | If EXCLUDE-PROPORTIONAL is non-nil, exclude proportional fonts |
| 2474 | in the font selection dialog. */) |
| 2475 | (Lisp_Object frame, Lisp_Object exclude_proportional) |
| 2476 | { |
| 2477 | struct frame *f = decode_window_system_frame (frame); |
| 2478 | CHOOSEFONT cf; |
| 2479 | LOGFONT lf; |
| 2480 | TEXTMETRIC tm; |
| 2481 | HDC hdc; |
| 2482 | HANDLE oldobj; |
| 2483 | char buf[100]; |
| 2484 | |
| 2485 | memset (&cf, 0, sizeof (cf)); |
| 2486 | memset (&lf, 0, sizeof (lf)); |
| 2487 | |
| 2488 | cf.lStructSize = sizeof (cf); |
| 2489 | cf.hwndOwner = FRAME_W32_WINDOW (f); |
| 2490 | cf.Flags = CF_FORCEFONTEXIST | CF_SCREENFONTS | CF_NOVERTFONTS; |
| 2491 | |
| 2492 | /* If exclude_proportional is non-nil, limit the selection to |
| 2493 | monospaced fonts. */ |
| 2494 | if (!NILP (exclude_proportional)) |
| 2495 | cf.Flags |= CF_FIXEDPITCHONLY; |
| 2496 | |
| 2497 | cf.lpLogFont = &lf; |
| 2498 | |
| 2499 | /* Initialize as much of the font details as we can from the current |
| 2500 | default font. */ |
| 2501 | hdc = GetDC (FRAME_W32_WINDOW (f)); |
| 2502 | oldobj = SelectObject (hdc, FONT_HANDLE (FRAME_FONT (f))); |
| 2503 | GetTextFace (hdc, LF_FACESIZE, lf.lfFaceName); |
| 2504 | if (GetTextMetrics (hdc, &tm)) |
| 2505 | { |
| 2506 | lf.lfHeight = tm.tmInternalLeading - tm.tmHeight; |
| 2507 | lf.lfWeight = tm.tmWeight; |
| 2508 | lf.lfItalic = tm.tmItalic; |
| 2509 | lf.lfUnderline = tm.tmUnderlined; |
| 2510 | lf.lfStrikeOut = tm.tmStruckOut; |
| 2511 | lf.lfCharSet = tm.tmCharSet; |
| 2512 | cf.Flags |= CF_INITTOLOGFONTSTRUCT; |
| 2513 | } |
| 2514 | SelectObject (hdc, oldobj); |
| 2515 | ReleaseDC (FRAME_W32_WINDOW (f), hdc); |
| 2516 | |
| 2517 | if (!ChooseFont (&cf) |
| 2518 | || logfont_to_fcname (&lf, cf.iPointSize, buf, 100) < 0) |
| 2519 | return Qnil; |
| 2520 | |
| 2521 | return DECODE_SYSTEM (build_string (buf)); |
| 2522 | } |
| 2523 | |
| 2524 | static const char *const w32font_booleans [] = { |
| 2525 | NULL, |
| 2526 | }; |
| 2527 | |
| 2528 | static const char *const w32font_non_booleans [] = { |
| 2529 | ":script", |
| 2530 | ":antialias", |
| 2531 | ":style", |
| 2532 | NULL, |
| 2533 | }; |
| 2534 | |
| 2535 | static void |
| 2536 | w32font_filter_properties (Lisp_Object font, Lisp_Object alist) |
| 2537 | { |
| 2538 | font_filter_properties (font, alist, w32font_booleans, w32font_non_booleans); |
| 2539 | } |
| 2540 | |
| 2541 | struct font_driver w32font_driver = |
| 2542 | { |
| 2543 | LISP_INITIALLY_ZERO, /* Qgdi */ |
| 2544 | 0, /* case insensitive */ |
| 2545 | w32font_get_cache, |
| 2546 | w32font_list, |
| 2547 | w32font_match, |
| 2548 | w32font_list_family, |
| 2549 | NULL, /* free_entity */ |
| 2550 | w32font_open, |
| 2551 | w32font_close, |
| 2552 | NULL, /* prepare_face */ |
| 2553 | NULL, /* done_face */ |
| 2554 | w32font_has_char, |
| 2555 | w32font_encode_char, |
| 2556 | w32font_text_extents, |
| 2557 | w32font_draw, |
| 2558 | NULL, /* get_bitmap */ |
| 2559 | NULL, /* free_bitmap */ |
| 2560 | NULL, /* get_outline */ |
| 2561 | NULL, /* free_outline */ |
| 2562 | NULL, /* anchor_point */ |
| 2563 | NULL, /* otf_capability */ |
| 2564 | NULL, /* otf_drive */ |
| 2565 | NULL, /* start_for_frame */ |
| 2566 | NULL, /* end_for_frame */ |
| 2567 | NULL, /* shape */ |
| 2568 | NULL, /* check */ |
| 2569 | NULL, /* get_variation_glyphs */ |
| 2570 | w32font_filter_properties, |
| 2571 | NULL, /* cached_font_ok */ |
| 2572 | }; |
| 2573 | |
| 2574 | |
| 2575 | /* Initialize state that does not change between invocations. This is only |
| 2576 | called when Emacs is dumped. */ |
| 2577 | void |
| 2578 | syms_of_w32font (void) |
| 2579 | { |
| 2580 | DEFSYM (Qgdi, "gdi"); |
| 2581 | DEFSYM (Quniscribe, "uniscribe"); |
| 2582 | DEFSYM (QCformat, ":format"); |
| 2583 | |
| 2584 | /* Generic font families. */ |
| 2585 | DEFSYM (Qmonospace, "monospace"); |
| 2586 | DEFSYM (Qserif, "serif"); |
| 2587 | DEFSYM (Qsansserif, "sansserif"); |
| 2588 | DEFSYM (Qscript, "script"); |
| 2589 | DEFSYM (Qdecorative, "decorative"); |
| 2590 | /* Aliases. */ |
| 2591 | DEFSYM (Qsans_serif, "sans_serif"); |
| 2592 | DEFSYM (Qsans, "sans"); |
| 2593 | DEFSYM (Qmono, "mono"); |
| 2594 | |
| 2595 | /* Fake foundries. */ |
| 2596 | DEFSYM (Qraster, "raster"); |
| 2597 | DEFSYM (Qoutline, "outline"); |
| 2598 | DEFSYM (Qunknown, "unknown"); |
| 2599 | |
| 2600 | /* Antialiasing. */ |
| 2601 | DEFSYM (Qstandard, "standard"); |
| 2602 | DEFSYM (Qsubpixel, "subpixel"); |
| 2603 | DEFSYM (Qnatural, "natural"); |
| 2604 | |
| 2605 | /* Languages */ |
| 2606 | DEFSYM (Qzh, "zh"); |
| 2607 | |
| 2608 | /* Scripts */ |
| 2609 | DEFSYM (Qlatin, "latin"); |
| 2610 | DEFSYM (Qgreek, "greek"); |
| 2611 | DEFSYM (Qcoptic, "coptic"); |
| 2612 | DEFSYM (Qcyrillic, "cyrillic"); |
| 2613 | DEFSYM (Qarmenian, "armenian"); |
| 2614 | DEFSYM (Qhebrew, "hebrew"); |
| 2615 | DEFSYM (Qarabic, "arabic"); |
| 2616 | DEFSYM (Qsyriac, "syriac"); |
| 2617 | DEFSYM (Qnko, "nko"); |
| 2618 | DEFSYM (Qthaana, "thaana"); |
| 2619 | DEFSYM (Qdevanagari, "devanagari"); |
| 2620 | DEFSYM (Qbengali, "bengali"); |
| 2621 | DEFSYM (Qgurmukhi, "gurmukhi"); |
| 2622 | DEFSYM (Qgujarati, "gujarati"); |
| 2623 | DEFSYM (Qoriya, "oriya"); |
| 2624 | DEFSYM (Qtamil, "tamil"); |
| 2625 | DEFSYM (Qtelugu, "telugu"); |
| 2626 | DEFSYM (Qkannada, "kannada"); |
| 2627 | DEFSYM (Qmalayalam, "malayalam"); |
| 2628 | DEFSYM (Qsinhala, "sinhala"); |
| 2629 | DEFSYM (Qthai, "thai"); |
| 2630 | DEFSYM (Qlao, "lao"); |
| 2631 | DEFSYM (Qtibetan, "tibetan"); |
| 2632 | DEFSYM (Qmyanmar, "myanmar"); |
| 2633 | DEFSYM (Qgeorgian, "georgian"); |
| 2634 | DEFSYM (Qhangul, "hangul"); |
| 2635 | DEFSYM (Qethiopic, "ethiopic"); |
| 2636 | DEFSYM (Qcherokee, "cherokee"); |
| 2637 | DEFSYM (Qcanadian_aboriginal, "canadian-aboriginal"); |
| 2638 | DEFSYM (Qogham, "ogham"); |
| 2639 | DEFSYM (Qrunic, "runic"); |
| 2640 | DEFSYM (Qkhmer, "khmer"); |
| 2641 | DEFSYM (Qmongolian, "mongolian"); |
| 2642 | DEFSYM (Qbraille, "braille"); |
| 2643 | DEFSYM (Qhan, "han"); |
| 2644 | DEFSYM (Qideographic_description, "ideographic-description"); |
| 2645 | DEFSYM (Qcjk_misc, "cjk-misc"); |
| 2646 | DEFSYM (Qkana, "kana"); |
| 2647 | DEFSYM (Qbopomofo, "bopomofo"); |
| 2648 | DEFSYM (Qkanbun, "kanbun"); |
| 2649 | DEFSYM (Qyi, "yi"); |
| 2650 | DEFSYM (Qbyzantine_musical_symbol, "byzantine-musical-symbol"); |
| 2651 | DEFSYM (Qmusical_symbol, "musical-symbol"); |
| 2652 | DEFSYM (Qmathematical, "mathematical"); |
| 2653 | DEFSYM (Qcham, "cham"); |
| 2654 | DEFSYM (Qphonetic, "phonetic"); |
| 2655 | DEFSYM (Qbalinese, "balinese"); |
| 2656 | DEFSYM (Qbuginese, "buginese"); |
| 2657 | DEFSYM (Qbuhid, "buhid"); |
| 2658 | DEFSYM (Qcuneiform, "cuneiform"); |
| 2659 | DEFSYM (Qcypriot, "cypriot"); |
| 2660 | DEFSYM (Qdeseret, "deseret"); |
| 2661 | DEFSYM (Qglagolitic, "glagolitic"); |
| 2662 | DEFSYM (Qgothic, "gothic"); |
| 2663 | DEFSYM (Qhanunoo, "hanunoo"); |
| 2664 | DEFSYM (Qkharoshthi, "kharoshthi"); |
| 2665 | DEFSYM (Qlimbu, "limbu"); |
| 2666 | DEFSYM (Qlinear_b, "linear_b"); |
| 2667 | DEFSYM (Qold_italic, "old_italic"); |
| 2668 | DEFSYM (Qold_persian, "old_persian"); |
| 2669 | DEFSYM (Qosmanya, "osmanya"); |
| 2670 | DEFSYM (Qphags_pa, "phags-pa"); |
| 2671 | DEFSYM (Qphoenician, "phoenician"); |
| 2672 | DEFSYM (Qshavian, "shavian"); |
| 2673 | DEFSYM (Qsyloti_nagri, "syloti_nagri"); |
| 2674 | DEFSYM (Qtagalog, "tagalog"); |
| 2675 | DEFSYM (Qtagbanwa, "tagbanwa"); |
| 2676 | DEFSYM (Qtai_le, "tai_le"); |
| 2677 | DEFSYM (Qtifinagh, "tifinagh"); |
| 2678 | DEFSYM (Qugaritic, "ugaritic"); |
| 2679 | |
| 2680 | /* W32 font encodings. */ |
| 2681 | DEFVAR_LISP ("w32-charset-info-alist", |
| 2682 | Vw32_charset_info_alist, |
| 2683 | doc: /* Alist linking Emacs character sets to Windows fonts and codepages. |
| 2684 | Each entry should be of the form: |
| 2685 | |
| 2686 | (CHARSET_NAME . (WINDOWS_CHARSET . CODEPAGE)) |
| 2687 | |
| 2688 | where CHARSET_NAME is a string used in font names to identify the charset, |
| 2689 | WINDOWS_CHARSET is a symbol that can be one of: |
| 2690 | |
| 2691 | w32-charset-ansi, w32-charset-default, w32-charset-symbol, |
| 2692 | w32-charset-shiftjis, w32-charset-hangeul, w32-charset-gb2312, |
| 2693 | w32-charset-chinesebig5, w32-charset-johab, w32-charset-hebrew, |
| 2694 | w32-charset-arabic, w32-charset-greek, w32-charset-turkish, |
| 2695 | w32-charset-vietnamese, w32-charset-thai, w32-charset-easteurope, |
| 2696 | w32-charset-russian, w32-charset-mac, w32-charset-baltic, |
| 2697 | or w32-charset-oem. |
| 2698 | |
| 2699 | CODEPAGE should be an integer specifying the codepage that should be used |
| 2700 | to display the character set, t to do no translation and output as Unicode, |
| 2701 | or nil to do no translation and output as 8 bit (or multibyte on far-east |
| 2702 | versions of Windows) characters. */); |
| 2703 | Vw32_charset_info_alist = Qnil; |
| 2704 | |
| 2705 | DEFSYM (Qw32_charset_ansi, "w32-charset-ansi"); |
| 2706 | DEFSYM (Qw32_charset_symbol, "w32-charset-symbol"); |
| 2707 | DEFSYM (Qw32_charset_default, "w32-charset-default"); |
| 2708 | DEFSYM (Qw32_charset_shiftjis, "w32-charset-shiftjis"); |
| 2709 | DEFSYM (Qw32_charset_hangeul, "w32-charset-hangeul"); |
| 2710 | DEFSYM (Qw32_charset_chinesebig5, "w32-charset-chinesebig5"); |
| 2711 | DEFSYM (Qw32_charset_gb2312, "w32-charset-gb2312"); |
| 2712 | DEFSYM (Qw32_charset_oem, "w32-charset-oem"); |
| 2713 | DEFSYM (Qw32_charset_johab, "w32-charset-johab"); |
| 2714 | DEFSYM (Qw32_charset_easteurope, "w32-charset-easteurope"); |
| 2715 | DEFSYM (Qw32_charset_turkish, "w32-charset-turkish"); |
| 2716 | DEFSYM (Qw32_charset_baltic, "w32-charset-baltic"); |
| 2717 | DEFSYM (Qw32_charset_russian, "w32-charset-russian"); |
| 2718 | DEFSYM (Qw32_charset_arabic, "w32-charset-arabic"); |
| 2719 | DEFSYM (Qw32_charset_greek, "w32-charset-greek"); |
| 2720 | DEFSYM (Qw32_charset_hebrew, "w32-charset-hebrew"); |
| 2721 | DEFSYM (Qw32_charset_vietnamese, "w32-charset-vietnamese"); |
| 2722 | DEFSYM (Qw32_charset_thai, "w32-charset-thai"); |
| 2723 | DEFSYM (Qw32_charset_mac, "w32-charset-mac"); |
| 2724 | |
| 2725 | defsubr (&Sx_select_font); |
| 2726 | |
| 2727 | w32font_driver.type = Qgdi; |
| 2728 | register_font_driver (&w32font_driver, NULL); |
| 2729 | } |
| 2730 | |
| 2731 | void |
| 2732 | globals_of_w32font (void) |
| 2733 | { |
| 2734 | #ifdef WINDOWSNT |
| 2735 | g_b_init_get_outline_metrics_w = 0; |
| 2736 | g_b_init_get_text_metrics_w = 0; |
| 2737 | g_b_init_get_glyph_outline_w = 0; |
| 2738 | g_b_init_get_char_width_32_w = 0; |
| 2739 | #endif |
| 2740 | } |