| 1 | /* Shared GDI and Uniscribe Font backend declarations for the W32 API. |
| 2 | Copyright (C) 2007-2012 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 | #ifndef EMACS_W32FONT_H |
| 20 | #define EMACS_W32FONT_H |
| 21 | |
| 22 | |
| 23 | /* Bit 17 of ntmFlags in NEWTEXTMETRIC is set for PostScript OpenType fonts, |
| 24 | bit 18 for TrueType OpenType fonts, bit 20 for Type1 fonts. */ |
| 25 | #ifndef NTM_PS_OPENTYPE |
| 26 | #define NTM_PS_OPENTYPE 0x00020000 |
| 27 | #endif |
| 28 | #ifndef NTM_TT_OPENTYPE |
| 29 | #define NTM_TT_OPENTYPE 0x00040000 |
| 30 | #endif |
| 31 | #ifndef NTM_TYPE1 |
| 32 | #define NTM_TYPE1 0x00100000 |
| 33 | #endif |
| 34 | |
| 35 | #define NTMFLAGS_OPENTYPE (NTM_PS_OPENTYPE | NTM_TT_OPENTYPE) |
| 36 | |
| 37 | struct w32_metric_cache |
| 38 | { |
| 39 | short lbearing, rbearing, width; |
| 40 | unsigned char status; |
| 41 | }; |
| 42 | |
| 43 | #define W32METRIC_NO_ATTEMPT 0 |
| 44 | #define W32METRIC_SUCCESS 1 |
| 45 | #define W32METRIC_FAIL 2 |
| 46 | |
| 47 | /* The actual structure for a w32 font, that can be cast to struct font. |
| 48 | The Uniscribe backend extends this. */ |
| 49 | struct w32font_info |
| 50 | { |
| 51 | struct font font; |
| 52 | TEXTMETRICW metrics; |
| 53 | unsigned int glyph_idx; |
| 54 | struct w32_metric_cache **cached_metrics; |
| 55 | int n_cache_blocks; |
| 56 | HFONT hfont; |
| 57 | }; |
| 58 | |
| 59 | /* Macros for getting OS specific information from a font struct. */ |
| 60 | #define FONT_HANDLE(f) (((struct w32font_info *)(f))->hfont) |
| 61 | #define FONT_TEXTMETRIC(f) (((struct w32font_info *)(f))->metrics) |
| 62 | |
| 63 | #define CACHE_BLOCKSIZE 128 |
| 64 | |
| 65 | Lisp_Object w32font_get_cache (FRAME_PTR fe); |
| 66 | Lisp_Object w32font_list_internal (Lisp_Object frame, |
| 67 | Lisp_Object font_spec, |
| 68 | int opentype_only); |
| 69 | Lisp_Object w32font_match_internal (Lisp_Object frame, |
| 70 | Lisp_Object font_spec, |
| 71 | int opentype_only); |
| 72 | int w32font_open_internal (FRAME_PTR f, Lisp_Object font_entity, |
| 73 | int pixel_size, Lisp_Object font_object); |
| 74 | void w32font_close (FRAME_PTR f, struct font *font); |
| 75 | int w32font_has_char (Lisp_Object entity, int c); |
| 76 | int w32font_text_extents (struct font *font, unsigned *code, int nglyphs, |
| 77 | struct font_metrics *metrics); |
| 78 | int w32font_draw (struct glyph_string *s, int from, int to, |
| 79 | int x, int y, int with_background); |
| 80 | |
| 81 | |
| 82 | int uniscribe_check_otf (LOGFONT *font, Lisp_Object otf_spec); |
| 83 | |
| 84 | Lisp_Object intern_font_name (char *); |
| 85 | |
| 86 | #endif |