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89 lines
3 KiB
C
89 lines
3 KiB
C
/* Shared GDI and Uniscribe Font backend declarations for the W32 API.
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Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef EMACS_W32FONT_H
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#define EMACS_W32FONT_H
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/* Bit 17 of ntmFlags in NEWTEXTMETRIC is set for Postscript OpenType fonts,
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bit 18 for Truetype OpenType fonts, bit 20 for Type1 fonts. */
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#ifndef NTM_PS_OPENTYPE
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#define NTM_PS_OPENTYPE 0x00020000
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#endif
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#ifndef NTM_TT_OPENTYPE
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#define NTM_TT_OPENTYPE 0x00040000
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#endif
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#ifndef NTM_TYPE1
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#define NTM_TYPE1 0x00100000
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#endif
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#define NTMFLAGS_OPENTYPE (NTM_PS_OPENTYPE | NTM_TT_OPENTYPE)
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struct w32_metric_cache
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{
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short lbearing, rbearing, width;
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unsigned char status;
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};
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#define W32METRIC_NO_ATTEMPT 0
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#define W32METRIC_SUCCESS 1
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#define W32METRIC_FAIL 2
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/* The actual structure for a w32 font, that can be cast to struct font.
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The Uniscribe backend extends this. */
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struct w32font_info
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{
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struct font font;
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TEXTMETRICW metrics;
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unsigned int glyph_idx;
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struct w32_metric_cache **cached_metrics;
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int n_cache_blocks;
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HFONT hfont;
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};
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/* Macros for getting OS specific information from a font struct. */
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#define FONT_HANDLE(f) (((struct w32font_info *)(f))->hfont)
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#define FONT_TEXTMETRIC(f) (((struct w32font_info *)(f))->metrics)
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#define CACHE_BLOCKSIZE 128
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Lisp_Object w32font_get_cache P_ ((FRAME_PTR fe));
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Lisp_Object w32font_list_internal P_ ((Lisp_Object frame,
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Lisp_Object font_spec,
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int opentype_only));
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Lisp_Object w32font_match_internal P_ ((Lisp_Object frame,
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Lisp_Object font_spec,
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int opentype_only));
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int w32font_open_internal P_ ((FRAME_PTR f, Lisp_Object font_entity,
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int pixel_size, Lisp_Object font_object));
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void w32font_close P_ ((FRAME_PTR f, struct font *font));
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int w32font_has_char P_ ((Lisp_Object entity, int c));
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int w32font_text_extents P_ ((struct font *font, unsigned *code, int nglyphs,
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struct font_metrics *metrics));
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int w32font_draw P_ ((struct glyph_string *s, int from, int to,
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int x, int y, int with_background));
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int uniscribe_check_otf P_ ((LOGFONT *font, Lisp_Object otf_spec));
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Lisp_Object intern_font_name P_ ((char *));
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#endif
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/* arch-tag: ef9d9675-a2a5-4d01-9526-815e9a3da7cb
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(do not change this comment) */
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