mirror of
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6c6f1994bf
This makes the code easier to read and the executable a bit smaller. Do not replace all calls to Fcons that happen to create lists, just calls that are intended to create lists. For example, when creating an alist that maps FOO to nil, use list1 (Fcons (FOO, Qnil)) rather than list1 (list1 (FOO)) or Fcons (Fcons (FOO, Qnil), Qnil). Similarly for list2 through list5. * buffer.c (Fget_buffer_create, Fmake_indirect_buffer): * bytecode.c (exec_byte_code): * callint.c (quotify_arg, Fcall_interactively): * callproc.c (Fcall_process, create_temp_file): * charset.c (load_charset_map_from_file) (Fdefine_charset_internal, init_charset): * coding.c (get_translation_table, detect_coding_system) (Fcheck_coding_systems_region) (Fset_terminal_coding_system_internal) (Fdefine_coding_system_internal, Fdefine_coding_system_alias): * composite.c (update_compositions, Ffind_composition_internal): * dired.c (directory_files_internal, file_name_completion) (Fsystem_users): * dispnew.c (Fopen_termscript, bitch_at_user, init_display): * doc.c (Fsnarf_documentation): * editfns.c (Fmessage_box): * emacs.c (main): * eval.c (do_debug_on_call, signal_error, maybe_call_debugger) (Feval, eval_sub, Ffuncall, apply_lambda): * fileio.c (make_temp_name, Fcopy_file, Faccess_file) (Fset_file_selinux_context, Fset_file_acl, Fset_file_modes) (Fset_file_times, Finsert_file_contents) (Fchoose_write_coding_system, Fwrite_region): * fns.c (Flax_plist_put, Fyes_or_no_p, syms_of_fns): * font.c (font_registry_charsets, font_parse_fcname) (font_prepare_cache, font_update_drivers, Flist_fonts): * fontset.c (Fset_fontset_font, Ffontset_info, syms_of_fontset): * frame.c (make_frame, Fmake_terminal_frame) (x_set_frame_parameters, x_report_frame_params) (x_default_parameter, Fx_parse_geometry): * ftfont.c (syms_of_ftfont): * image.c (gif_load): * keyboard.c (command_loop_1): * keymap.c (Fmake_keymap, Fmake_sparse_keymap, access_keymap_1) (Fcopy_keymap, append_key, Fcurrent_active_maps) (Fminor_mode_key_binding, accessible_keymaps_1) (Faccessible_keymaps, Fwhere_is_internal): * lread.c (read_emacs_mule_char): * menu.c (find_and_return_menu_selection): * minibuf.c (get_minibuffer): * nsfns.m (Fns_perform_service): * nsfont.m (ns_script_to_charset): * nsmenu.m (ns_popup_dialog): * nsselect.m (ns_get_local_selection, ns_string_from_pasteboard) (Fx_own_selection_internal): * nsterm.m (append2): * print.c (Fredirect_debugging_output) (print_prune_string_charset): * process.c (Fdelete_process, Fprocess_contact) (Fformat_network_address, set_socket_option) (read_and_dispose_of_process_output, write_queue_push) (send_process, exec_sentinel): * sound.c (Fplay_sound_internal): * textprop.c (validate_plist, add_properties) (Fput_text_property, Fadd_face_text_property) (copy_text_properties, text_property_list, syms_of_textprop): * unexaix.c (report_error): * unexcoff.c (report_error): * unexsol.c (unexec): * xdisp.c (redisplay_tool_bar, store_mode_line_string) (Fformat_mode_line, syms_of_xdisp): * xfaces.c (set_font_frame_param) (Finternal_lisp_face_attribute_values) (Finternal_merge_in_global_face, syms_of_xfaces): * xfns.c (x_default_scroll_bar_color_parameter) (x_default_font_parameter, x_create_tip_frame): * xfont.c (xfont_supported_scripts): * xmenu.c (Fx_popup_dialog, xmenu_show, xdialog_show) (menu_help_callback, xmenu_show): * xml.c (make_dom): * xterm.c (set_wm_state): Prefer list1 (FOO) to Fcons (FOO, Qnil) when creating a list, and similarly for list2 through list5.
2266 lines
64 KiB
C
2266 lines
64 KiB
C
/* Fontset handler.
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Copyright (C) 2001-2013 Free Software Foundation, Inc.
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Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
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2005, 2006, 2007, 2008, 2009, 2010, 2011
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National Institute of Advanced Industrial Science and Technology (AIST)
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Registration Number H14PRO021
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Copyright (C) 2003, 2006
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National Institute of Advanced Industrial Science and Technology (AIST)
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Registration Number H13PRO009
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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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#include <config.h>
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#include <stdio.h>
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#include "lisp.h"
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#include "blockinput.h"
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#include "character.h"
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#include "buffer.h"
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#include "charset.h"
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#include "ccl.h"
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#include "keyboard.h"
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#include "frame.h"
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#include "dispextern.h"
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#include "intervals.h"
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#include "fontset.h"
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#include "window.h"
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#ifdef HAVE_X_WINDOWS
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#include "xterm.h"
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#endif
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#ifdef HAVE_NTGUI
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#include "w32term.h"
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#endif
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#ifdef HAVE_NS
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#include "nsterm.h"
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#endif
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#include "termhooks.h"
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#include "font.h"
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/* FONTSET
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A fontset is a collection of font related information to give
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similar appearance (style, etc) of characters. A fontset has two
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roles. One is to use for the frame parameter `font' as if it is an
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ASCII font. In that case, Emacs uses the font specified for
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`ascii' script for the frame's default font.
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Another role, the more important one, is to provide information
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about which font to use for each non-ASCII character.
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There are two kinds of fontsets; base and realized. A base fontset
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is created by `new-fontset' from Emacs Lisp explicitly. A realized
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fontset is created implicitly when a face is realized for ASCII
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characters. A face is also realized for non-ASCII characters based
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on an ASCII face. All of non-ASCII faces based on the same ASCII
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face share the same realized fontset.
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A fontset object is implemented by a char-table whose default value
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and parent are always nil.
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An element of a base fontset is a vector of FONT-DEFs which itself
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is a vector [ FONT-SPEC ENCODING REPERTORY ].
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An element of a realized fontset is nil, t, 0, or a vector of this
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form:
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[ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF
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RFONT-DEF0 RFONT-DEF1 ... ]
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RFONT-DEFn (i.e. Realized FONT-DEF) has this form:
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[ FACE-ID FONT-DEF FONT-OBJECT SORTING-SCORE ]
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RFONT-DEFn are automatically reordered by the current charset
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priority list.
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The value nil means that we have not yet generated the above vector
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from the base of the fontset.
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The value t means that no font is available for the corresponding
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range of characters.
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The value 0 means that no font is available for the corresponding
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range of characters in this fontset, but may be available in the
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default fontset.
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A fontset has 9 extra slots.
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The 1st slot: the ID number of the fontset
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The 2nd slot:
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base: the name of the fontset
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realized: nil
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The 3rd slot:
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base: nil
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realized: the base fontset
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The 4th slot:
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base: nil
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realized: the frame that the fontset belongs to
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The 5th slot:
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base: the font name for ASCII characters
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realized: nil
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The 6th slot:
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base: nil
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realized: the ID number of a face to use for characters that
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has no font in a realized fontset.
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The 7th slot:
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base: nil
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realized: Alist of font index vs the corresponding repertory
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char-table.
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The 8th slot:
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base: nil
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realized: If the base is not the default fontset, a fontset
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realized from the default fontset, else nil.
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The 9th slot:
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base: Same as element value (but for fallback fonts).
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realized: Likewise.
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All fontsets are recorded in the vector Vfontset_table.
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DEFAULT FONTSET
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There's a special base fontset named `default fontset' which
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defines the default font specifications. When a base fontset
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doesn't specify a font for a specific character, the corresponding
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value in the default fontset is used.
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The parent of a realized fontset created for such a face that has
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no fontset is the default fontset.
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These structures are hidden from the other codes than this file.
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The other codes handle fontsets only by their ID numbers. They
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usually use the variable name `fontset' for IDs. But, in this
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file, we always use variable name `id' for IDs, and name `fontset'
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for an actual fontset object, i.e., char-table.
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*/
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/********** VARIABLES and FUNCTION PROTOTYPES **********/
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static Lisp_Object Qfontset;
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static Lisp_Object Qfontset_info;
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static Lisp_Object Qprepend, Qappend;
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Lisp_Object Qlatin;
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/* Vector containing all fontsets. */
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static Lisp_Object Vfontset_table;
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/* Next possibly free fontset ID. Usually this keeps the minimum
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fontset ID not yet used. */
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static int next_fontset_id;
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/* The default fontset. This gives default FAMILY and REGISTRY of
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font for each character. */
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static Lisp_Object Vdefault_fontset;
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/* Prototype declarations for static functions. */
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static Lisp_Object make_fontset (Lisp_Object, Lisp_Object, Lisp_Object);
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/* Return true if ID is a valid fontset id.
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Optimized away if ENABLE_CHECKING is not defined. */
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static bool
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fontset_id_valid_p (int id)
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{
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return (id >= 0 && id < ASIZE (Vfontset_table) - 1);
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}
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/********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/
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/* Return the fontset with ID. No check of ID's validness. */
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#define FONTSET_FROM_ID(id) AREF (Vfontset_table, id)
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/* Access special values of FONTSET. */
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#define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0]
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static void
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set_fontset_id (Lisp_Object fontset, Lisp_Object id)
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{
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set_char_table_extras (fontset, 0, id);
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}
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/* Access special values of (base) FONTSET. */
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#define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1]
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static void
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set_fontset_name (Lisp_Object fontset, Lisp_Object name)
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{
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set_char_table_extras (fontset, 1, name);
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}
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#define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->extras[4]
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static void
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set_fontset_ascii (Lisp_Object fontset, Lisp_Object ascii)
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{
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set_char_table_extras (fontset, 4, ascii);
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}
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/* Access special values of (realized) FONTSET. */
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#define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->extras[2]
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static void
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set_fontset_base (Lisp_Object fontset, Lisp_Object base)
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{
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set_char_table_extras (fontset, 2, base);
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}
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#define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[3]
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static void
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set_fontset_frame (Lisp_Object fontset, Lisp_Object frame)
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{
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set_char_table_extras (fontset, 3, frame);
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}
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#define FONTSET_NOFONT_FACE(fontset) XCHAR_TABLE (fontset)->extras[5]
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static void
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set_fontset_nofont_face (Lisp_Object fontset, Lisp_Object face)
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{
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set_char_table_extras (fontset, 5, face);
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}
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#define FONTSET_DEFAULT(fontset) XCHAR_TABLE (fontset)->extras[7]
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static void
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set_fontset_default (Lisp_Object fontset, Lisp_Object def)
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{
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set_char_table_extras (fontset, 7, def);
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}
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/* For both base and realized fontset. */
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#define FONTSET_FALLBACK(fontset) XCHAR_TABLE (fontset)->extras[8]
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static void
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set_fontset_fallback (Lisp_Object fontset, Lisp_Object fallback)
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{
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set_char_table_extras (fontset, 8, fallback);
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}
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#define BASE_FONTSET_P(fontset) (NILP (FONTSET_BASE (fontset)))
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/* Macros for FONT-DEF and RFONT-DEF of fontset. */
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#define FONT_DEF_NEW(font_def, font_spec, encoding, repertory) \
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do { \
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(font_def) = make_uninit_vector (3); \
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ASET ((font_def), 0, font_spec); \
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ASET ((font_def), 1, encoding); \
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ASET ((font_def), 2, repertory); \
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} while (0)
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#define FONT_DEF_SPEC(font_def) AREF (font_def, 0)
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#define FONT_DEF_ENCODING(font_def) AREF (font_def, 1)
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#define FONT_DEF_REPERTORY(font_def) AREF (font_def, 2)
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#define RFONT_DEF_FACE(rfont_def) AREF (rfont_def, 0)
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#define RFONT_DEF_SET_FACE(rfont_def, face_id) \
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ASET ((rfont_def), 0, make_number (face_id))
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#define RFONT_DEF_FONT_DEF(rfont_def) AREF (rfont_def, 1)
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#define RFONT_DEF_SPEC(rfont_def) FONT_DEF_SPEC (AREF (rfont_def, 1))
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#define RFONT_DEF_OBJECT(rfont_def) AREF (rfont_def, 2)
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#define RFONT_DEF_SET_OBJECT(rfont_def, object) \
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ASET ((rfont_def), 2, (object))
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/* Score of RFONT_DEF is an integer value; the lowest 8 bits represent
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the order of listing by font backends, the higher bits represents
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the order given by charset priority list. The smaller value is
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preferable. */
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#define RFONT_DEF_SCORE(rfont_def) XINT (AREF (rfont_def, 3))
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#define RFONT_DEF_SET_SCORE(rfont_def, score) \
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ASET ((rfont_def), 3, make_number (score))
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#define RFONT_DEF_NEW(rfont_def, font_def) \
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do { \
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(rfont_def) = Fmake_vector (make_number (4), Qnil); \
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ASET ((rfont_def), 1, (font_def)); \
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RFONT_DEF_SET_SCORE ((rfont_def), 0); \
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} while (0)
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/* Return the element of FONTSET for the character C. If FONTSET is a
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base fontset other then the default fontset and FONTSET doesn't
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contain information for C, return the information in the default
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fontset. */
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#define FONTSET_REF(fontset, c) \
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(EQ (fontset, Vdefault_fontset) \
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? CHAR_TABLE_REF (fontset, c) \
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: fontset_ref ((fontset), (c)))
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static Lisp_Object
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fontset_ref (Lisp_Object fontset, int c)
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{
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Lisp_Object elt;
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elt = CHAR_TABLE_REF (fontset, c);
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if (NILP (elt) && ! EQ (fontset, Vdefault_fontset)
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/* Don't check Vdefault_fontset for a realized fontset. */
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&& NILP (FONTSET_BASE (fontset)))
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elt = CHAR_TABLE_REF (Vdefault_fontset, c);
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return elt;
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}
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/* Set elements of FONTSET for characters in RANGE to the value ELT.
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RANGE is a cons (FROM . TO), where FROM and TO are character codes
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specifying a range. */
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#define FONTSET_SET(fontset, range, elt) \
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Fset_char_table_range ((fontset), (range), (elt))
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/* Modify the elements of FONTSET for characters in RANGE by replacing
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with ELT or adding ELT. RANGE is a cons (FROM . TO), where FROM
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and TO are character codes specifying a range. If ADD is nil,
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replace with ELT, if ADD is `prepend', prepend ELT, otherwise,
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append ELT. */
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#define FONTSET_ADD(fontset, range, elt, add) \
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(NILP (add) \
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? (NILP (range) \
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? (set_fontset_fallback \
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(fontset, Fmake_vector (make_number (1), (elt)))) \
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: ((void) \
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Fset_char_table_range (fontset, range, \
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Fmake_vector (make_number (1), elt)))) \
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: fontset_add ((fontset), (range), (elt), (add)))
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static void
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fontset_add (Lisp_Object fontset, Lisp_Object range, Lisp_Object elt, Lisp_Object add)
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{
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Lisp_Object args[2];
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int idx = (EQ (add, Qappend) ? 0 : 1);
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args[1 - idx] = Fmake_vector (make_number (1), elt);
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if (CONSP (range))
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{
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int from = XINT (XCAR (range));
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int to = XINT (XCDR (range));
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int from1, to1;
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do {
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from1 = from, to1 = to;
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args[idx] = char_table_ref_and_range (fontset, from, &from1, &to1);
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char_table_set_range (fontset, from, to1,
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NILP (args[idx]) ? args[1 - idx]
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: Fvconcat (2, args));
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from = to1 + 1;
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} while (from < to);
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}
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else
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{
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args[idx] = FONTSET_FALLBACK (fontset);
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set_fontset_fallback
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(fontset, NILP (args[idx]) ? args[1 - idx] : Fvconcat (2, args));
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}
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}
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static int
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fontset_compare_rfontdef (const void *val1, const void *val2)
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{
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return (RFONT_DEF_SCORE (*(Lisp_Object *) val1)
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- RFONT_DEF_SCORE (*(Lisp_Object *) val2));
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}
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/* Update FONT-GROUP which has this form:
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[ CHARSET-ORDERED-LIST-TICK PREFERRED-RFONT-DEF
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RFONT-DEF0 RFONT-DEF1 ... ]
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Reorder RFONT-DEFs according to the current language, and update
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CHARSET-ORDERED-LIST-TICK.
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If PREFERRED_FAMILY is not nil, that family has the higher priority
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if the encoding charsets or languages in font-specs are the same. */
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static void
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reorder_font_vector (Lisp_Object font_group, struct font *font)
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{
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Lisp_Object vec, font_object;
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int size;
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int i;
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bool score_changed = 0;
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if (font)
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XSETFONT (font_object, font);
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else
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font_object = Qnil;
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vec = XCDR (font_group);
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size = ASIZE (vec);
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/* Exclude the tailing nil element from the reordering. */
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if (NILP (AREF (vec, size - 1)))
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size--;
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for (i = 0; i < size; i++)
|
||
{
|
||
Lisp_Object rfont_def = AREF (vec, i);
|
||
Lisp_Object font_def = RFONT_DEF_FONT_DEF (rfont_def);
|
||
Lisp_Object font_spec = FONT_DEF_SPEC (font_def);
|
||
int score = RFONT_DEF_SCORE (rfont_def) & 0xFF;
|
||
Lisp_Object otf_spec = Ffont_get (font_spec, QCotf);
|
||
|
||
if (! NILP (otf_spec))
|
||
/* A font-spec with :otf is preferable regardless of encoding
|
||
and language.. */
|
||
;
|
||
else if (! font_match_p (font_spec, font_object))
|
||
{
|
||
Lisp_Object encoding = FONT_DEF_ENCODING (font_def);
|
||
|
||
if (! NILP (encoding))
|
||
{
|
||
Lisp_Object tail;
|
||
|
||
for (tail = Vcharset_ordered_list;
|
||
! EQ (tail, Vcharset_non_preferred_head) && CONSP (tail);
|
||
tail = XCDR (tail))
|
||
if (EQ (encoding, XCAR (tail)))
|
||
break;
|
||
else if (score <= min (INT_MAX, MOST_POSITIVE_FIXNUM) - 0x100)
|
||
score += 0x100;
|
||
}
|
||
else
|
||
{
|
||
Lisp_Object lang = Ffont_get (font_spec, QClang);
|
||
|
||
if (! NILP (lang)
|
||
&& ! EQ (lang, Vcurrent_iso639_language)
|
||
&& (! CONSP (Vcurrent_iso639_language)
|
||
|| NILP (Fmemq (lang, Vcurrent_iso639_language))))
|
||
score |= 0x100;
|
||
}
|
||
}
|
||
if (RFONT_DEF_SCORE (rfont_def) != score)
|
||
{
|
||
RFONT_DEF_SET_SCORE (rfont_def, score);
|
||
score_changed = 1;
|
||
}
|
||
}
|
||
|
||
if (score_changed)
|
||
qsort (XVECTOR (vec)->contents, size, word_size,
|
||
fontset_compare_rfontdef);
|
||
XSETCAR (font_group, make_number (charset_ordered_list_tick));
|
||
}
|
||
|
||
/* Return a font-group (actually a cons (-1 . FONT-GROUP-VECTOR)) for
|
||
character C in FONTSET. If C is -1, return a fallback font-group.
|
||
If C is not -1, the value may be Qt (FONTSET doesn't have a font
|
||
for C even in the fallback group), or 0 (a font for C may be found
|
||
only in the fallback group). */
|
||
|
||
static Lisp_Object
|
||
fontset_get_font_group (Lisp_Object fontset, int c)
|
||
{
|
||
Lisp_Object font_group;
|
||
Lisp_Object base_fontset;
|
||
int from = 0, to = MAX_CHAR, i;
|
||
|
||
eassert (! BASE_FONTSET_P (fontset));
|
||
if (c >= 0)
|
||
font_group = CHAR_TABLE_REF (fontset, c);
|
||
else
|
||
font_group = FONTSET_FALLBACK (fontset);
|
||
if (! NILP (font_group))
|
||
return font_group;
|
||
base_fontset = FONTSET_BASE (fontset);
|
||
if (NILP (base_fontset))
|
||
font_group = Qnil;
|
||
else if (c >= 0)
|
||
font_group = char_table_ref_and_range (base_fontset, c, &from, &to);
|
||
else
|
||
font_group = FONTSET_FALLBACK (base_fontset);
|
||
if (NILP (font_group))
|
||
{
|
||
font_group = make_number (0);
|
||
if (c >= 0)
|
||
char_table_set_range (fontset, from, to, font_group);
|
||
return font_group;
|
||
}
|
||
if (!VECTORP (font_group))
|
||
return font_group;
|
||
font_group = Fcopy_sequence (font_group);
|
||
for (i = 0; i < ASIZE (font_group); i++)
|
||
if (! NILP (AREF (font_group, i)))
|
||
{
|
||
Lisp_Object rfont_def;
|
||
|
||
RFONT_DEF_NEW (rfont_def, AREF (font_group, i));
|
||
/* Remember the original order. */
|
||
RFONT_DEF_SET_SCORE (rfont_def, i);
|
||
ASET (font_group, i, rfont_def);
|
||
}
|
||
font_group = Fcons (make_number (-1), font_group);
|
||
if (c >= 0)
|
||
char_table_set_range (fontset, from, to, font_group);
|
||
else
|
||
set_fontset_fallback (fontset, font_group);
|
||
return font_group;
|
||
}
|
||
|
||
/* Return RFONT-DEF (vector) in the realized fontset FONTSET for the
|
||
character C. If no font is found, return Qnil if there's a
|
||
possibility that the default fontset or the fallback font groups
|
||
have a proper font, and return Qt if not.
|
||
|
||
If a font is found but is not yet opened, open it (if FACE is not
|
||
NULL) or return Qnil (if FACE is NULL).
|
||
|
||
ID is a charset-id that must be preferred, or -1 meaning no
|
||
preference.
|
||
|
||
If FALLBACK, search only fallback fonts. */
|
||
|
||
static Lisp_Object
|
||
fontset_find_font (Lisp_Object fontset, int c, struct face *face, int id,
|
||
bool fallback)
|
||
{
|
||
Lisp_Object vec, font_group;
|
||
int i, charset_matched = 0, found_index;
|
||
FRAME_PTR f = (FRAMEP (FONTSET_FRAME (fontset))
|
||
? XFRAME (FONTSET_FRAME (fontset)) : XFRAME (selected_frame));
|
||
Lisp_Object rfont_def;
|
||
|
||
font_group = fontset_get_font_group (fontset, fallback ? -1 : c);
|
||
if (! CONSP (font_group))
|
||
return font_group;
|
||
vec = XCDR (font_group);
|
||
if (ASIZE (vec) == 0)
|
||
return Qnil;
|
||
|
||
if (ASIZE (vec) > 1)
|
||
{
|
||
if (XINT (XCAR (font_group)) != charset_ordered_list_tick)
|
||
/* We have just created the font-group,
|
||
or the charset priorities were changed. */
|
||
reorder_font_vector (font_group, face->ascii_face->font);
|
||
if (id >= 0)
|
||
/* Find a spec matching with the charset ID to try at
|
||
first. */
|
||
for (i = 0; i < ASIZE (vec); i++)
|
||
{
|
||
Lisp_Object repertory;
|
||
|
||
rfont_def = AREF (vec, i);
|
||
if (NILP (rfont_def))
|
||
break;
|
||
repertory = FONT_DEF_REPERTORY (RFONT_DEF_FONT_DEF (rfont_def));
|
||
|
||
if (XINT (repertory) == id)
|
||
{
|
||
charset_matched = i;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Find the first available font in the vector of RFONT-DEF. */
|
||
for (i = 0; i < ASIZE (vec); i++)
|
||
{
|
||
Lisp_Object font_def;
|
||
Lisp_Object font_entity, font_object;
|
||
|
||
found_index = i;
|
||
if (i == 0)
|
||
{
|
||
if (charset_matched > 0)
|
||
{
|
||
/* Try the element matching with the charset ID at first. */
|
||
found_index = charset_matched;
|
||
/* Make this negative so that we don't come here in the
|
||
next loop. */
|
||
charset_matched = - charset_matched;
|
||
/* We must try the first element in the next loop. */
|
||
i--;
|
||
}
|
||
}
|
||
else if (i == - charset_matched)
|
||
{
|
||
/* We have already tried this element and the followings
|
||
that have the same font specifications in the first
|
||
iteration. So, skip them all. */
|
||
rfont_def = AREF (vec, i);
|
||
font_def = RFONT_DEF_FONT_DEF (rfont_def);
|
||
for (; i + 1 < ASIZE (vec); i++)
|
||
{
|
||
rfont_def = AREF (vec, i + 1);
|
||
if (NILP (rfont_def))
|
||
break;
|
||
if (! EQ (RFONT_DEF_FONT_DEF (rfont_def), font_def))
|
||
break;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
rfont_def = AREF (vec, found_index);
|
||
if (NILP (rfont_def))
|
||
{
|
||
if (i < 0)
|
||
continue;
|
||
/* This is a sign of not to try the other fonts. */
|
||
return Qt;
|
||
}
|
||
if (INTEGERP (RFONT_DEF_FACE (rfont_def))
|
||
&& XINT (RFONT_DEF_FACE (rfont_def)) < 0)
|
||
/* We couldn't open this font last time. */
|
||
continue;
|
||
|
||
font_object = RFONT_DEF_OBJECT (rfont_def);
|
||
if (NILP (font_object))
|
||
{
|
||
font_def = RFONT_DEF_FONT_DEF (rfont_def);
|
||
|
||
if (! face)
|
||
/* We have not yet opened the font. */
|
||
return Qnil;
|
||
/* Find a font best-matching with the spec without checking
|
||
the support of the character C. That checking is costly,
|
||
and even without the checking, the found font supports C
|
||
in high possibility. */
|
||
font_entity = font_find_for_lface (f, face->lface,
|
||
FONT_DEF_SPEC (font_def), -1);
|
||
if (NILP (font_entity))
|
||
{
|
||
/* Record that no font matches the spec. */
|
||
RFONT_DEF_SET_FACE (rfont_def, -1);
|
||
continue;
|
||
}
|
||
font_object = font_open_for_lface (f, font_entity, face->lface,
|
||
FONT_DEF_SPEC (font_def));
|
||
if (NILP (font_object))
|
||
{
|
||
/* Something strange happened, perhaps because of a
|
||
Font-backend problem. Too avoid crashing, record
|
||
that this spec is unusable. It may be better to find
|
||
another font of the same spec, but currently we don't
|
||
have such an API. */
|
||
RFONT_DEF_SET_FACE (rfont_def, -1);
|
||
continue;
|
||
}
|
||
RFONT_DEF_SET_OBJECT (rfont_def, font_object);
|
||
}
|
||
|
||
if (font_has_char (f, font_object, c))
|
||
goto found;
|
||
|
||
/* Find a font already opened, matching with the current spec,
|
||
and supporting C. */
|
||
font_def = RFONT_DEF_FONT_DEF (rfont_def);
|
||
for (; found_index + 1 < ASIZE (vec); found_index++)
|
||
{
|
||
rfont_def = AREF (vec, found_index + 1);
|
||
if (NILP (rfont_def))
|
||
break;
|
||
if (! EQ (RFONT_DEF_FONT_DEF (rfont_def), font_def))
|
||
break;
|
||
font_object = RFONT_DEF_OBJECT (rfont_def);
|
||
if (! NILP (font_object) && font_has_char (f, font_object, c))
|
||
{
|
||
found_index++;
|
||
goto found;
|
||
}
|
||
}
|
||
|
||
/* Find a font-entity with the current spec and supporting C. */
|
||
font_entity = font_find_for_lface (f, face->lface,
|
||
FONT_DEF_SPEC (font_def), c);
|
||
if (! NILP (font_entity))
|
||
{
|
||
/* We found a font. Open it and insert a new element for
|
||
that font in VEC. */
|
||
Lisp_Object new_vec;
|
||
int j;
|
||
|
||
font_object = font_open_for_lface (f, font_entity, face->lface,
|
||
Qnil);
|
||
if (NILP (font_object))
|
||
continue;
|
||
RFONT_DEF_NEW (rfont_def, font_def);
|
||
RFONT_DEF_SET_OBJECT (rfont_def, font_object);
|
||
RFONT_DEF_SET_SCORE (rfont_def, RFONT_DEF_SCORE (rfont_def));
|
||
new_vec = Fmake_vector (make_number (ASIZE (vec) + 1), Qnil);
|
||
found_index++;
|
||
for (j = 0; j < found_index; j++)
|
||
ASET (new_vec, j, AREF (vec, j));
|
||
ASET (new_vec, j, rfont_def);
|
||
for (j++; j < ASIZE (new_vec); j++)
|
||
ASET (new_vec, j, AREF (vec, j - 1));
|
||
XSETCDR (font_group, new_vec);
|
||
vec = new_vec;
|
||
goto found;
|
||
}
|
||
if (i >= 0)
|
||
i = found_index;
|
||
}
|
||
|
||
FONTSET_SET (fontset, make_number (c), make_number (0));
|
||
return Qnil;
|
||
|
||
found:
|
||
if (fallback && found_index > 0)
|
||
{
|
||
/* The order of fonts in the fallback font-group is not that
|
||
important, and it is better to move the found font to the
|
||
first of the group so that the next try will find it
|
||
quickly. */
|
||
for (i = found_index; i > 0; i--)
|
||
ASET (vec, i, AREF (vec, i - 1));
|
||
ASET (vec, 0, rfont_def);
|
||
}
|
||
return rfont_def;
|
||
}
|
||
|
||
|
||
static Lisp_Object
|
||
fontset_font (Lisp_Object fontset, int c, struct face *face, int id)
|
||
{
|
||
Lisp_Object rfont_def, default_rfont_def IF_LINT (= Qnil);
|
||
Lisp_Object base_fontset;
|
||
|
||
/* Try a font-group of FONTSET. */
|
||
FONT_DEFERRED_LOG ("current fontset: font for", make_number (c), Qnil);
|
||
rfont_def = fontset_find_font (fontset, c, face, id, 0);
|
||
if (VECTORP (rfont_def))
|
||
return rfont_def;
|
||
if (NILP (rfont_def))
|
||
FONTSET_SET (fontset, make_number (c), make_number (0));
|
||
|
||
/* Try a font-group of the default fontset. */
|
||
base_fontset = FONTSET_BASE (fontset);
|
||
if (! EQ (base_fontset, Vdefault_fontset))
|
||
{
|
||
if (NILP (FONTSET_DEFAULT (fontset)))
|
||
set_fontset_default
|
||
(fontset,
|
||
make_fontset (FONTSET_FRAME (fontset), Qnil, Vdefault_fontset));
|
||
FONT_DEFERRED_LOG ("default fontset: font for", make_number (c), Qnil);
|
||
default_rfont_def
|
||
= fontset_find_font (FONTSET_DEFAULT (fontset), c, face, id, 0);
|
||
if (VECTORP (default_rfont_def))
|
||
return default_rfont_def;
|
||
if (NILP (default_rfont_def))
|
||
FONTSET_SET (FONTSET_DEFAULT (fontset), make_number (c),
|
||
make_number (0));
|
||
}
|
||
|
||
/* Try a fallback font-group of FONTSET. */
|
||
if (! EQ (rfont_def, Qt))
|
||
{
|
||
FONT_DEFERRED_LOG ("current fallback: font for", make_number (c), Qnil);
|
||
rfont_def = fontset_find_font (fontset, c, face, id, 1);
|
||
if (VECTORP (rfont_def))
|
||
return rfont_def;
|
||
/* Remember that FONTSET has no font for C. */
|
||
FONTSET_SET (fontset, make_number (c), Qt);
|
||
}
|
||
|
||
/* Try a fallback font-group of the default fontset. */
|
||
if (! EQ (base_fontset, Vdefault_fontset)
|
||
&& ! EQ (default_rfont_def, Qt))
|
||
{
|
||
FONT_DEFERRED_LOG ("default fallback: font for", make_number (c), Qnil);
|
||
rfont_def = fontset_find_font (FONTSET_DEFAULT (fontset), c, face, id, 1);
|
||
if (VECTORP (rfont_def))
|
||
return rfont_def;
|
||
/* Remember that the default fontset has no font for C. */
|
||
FONTSET_SET (FONTSET_DEFAULT (fontset), make_number (c), Qt);
|
||
}
|
||
|
||
return Qnil;
|
||
}
|
||
|
||
/* Return a newly created fontset with NAME. If BASE is nil, make a
|
||
base fontset. Otherwise make a realized fontset whose base is
|
||
BASE. */
|
||
|
||
static Lisp_Object
|
||
make_fontset (Lisp_Object frame, Lisp_Object name, Lisp_Object base)
|
||
{
|
||
Lisp_Object fontset;
|
||
int size = ASIZE (Vfontset_table);
|
||
int id = next_fontset_id;
|
||
|
||
/* Find a free slot in Vfontset_table. Usually, next_fontset_id is
|
||
the next available fontset ID. So it is expected that this loop
|
||
terminates quickly. In addition, as the last element of
|
||
Vfontset_table is always nil, we don't have to check the range of
|
||
id. */
|
||
while (!NILP (AREF (Vfontset_table, id))) id++;
|
||
|
||
if (id + 1 == size)
|
||
Vfontset_table = larger_vector (Vfontset_table, 1, -1);
|
||
|
||
fontset = Fmake_char_table (Qfontset, Qnil);
|
||
|
||
set_fontset_id (fontset, make_number (id));
|
||
if (NILP (base))
|
||
set_fontset_name (fontset, name);
|
||
else
|
||
{
|
||
set_fontset_name (fontset, Qnil);
|
||
set_fontset_frame (fontset, frame);
|
||
set_fontset_base (fontset, base);
|
||
}
|
||
|
||
ASET (Vfontset_table, id, fontset);
|
||
next_fontset_id = id + 1;
|
||
return fontset;
|
||
}
|
||
|
||
|
||
/********** INTERFACES TO xfaces.c, xfns.c, and dispextern.h **********/
|
||
|
||
/* Return the name of the fontset who has ID. */
|
||
|
||
Lisp_Object
|
||
fontset_name (int id)
|
||
{
|
||
Lisp_Object fontset;
|
||
|
||
fontset = FONTSET_FROM_ID (id);
|
||
return FONTSET_NAME (fontset);
|
||
}
|
||
|
||
|
||
/* Return the ASCII font name of the fontset who has ID. */
|
||
|
||
Lisp_Object
|
||
fontset_ascii (int id)
|
||
{
|
||
Lisp_Object fontset, elt;
|
||
|
||
fontset= FONTSET_FROM_ID (id);
|
||
elt = FONTSET_ASCII (fontset);
|
||
if (CONSP (elt))
|
||
elt = XCAR (elt);
|
||
return elt;
|
||
}
|
||
|
||
static void
|
||
free_realized_fontset (FRAME_PTR f, Lisp_Object fontset)
|
||
{
|
||
#if 0
|
||
Lisp_Object tail;
|
||
|
||
if (0)
|
||
for (tail = FONTSET_OBJLIST (fontset); CONSP (tail); tail = XCDR (tail))
|
||
{
|
||
eassert (FONT_OBJECT_P (XCAR (tail)));
|
||
font_close_object (f, XCAR (tail));
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/* Free fontset of FACE defined on frame F. Called from
|
||
free_realized_face. */
|
||
|
||
void
|
||
free_face_fontset (FRAME_PTR f, struct face *face)
|
||
{
|
||
Lisp_Object fontset;
|
||
|
||
fontset = FONTSET_FROM_ID (face->fontset);
|
||
if (NILP (fontset))
|
||
return;
|
||
eassert (! BASE_FONTSET_P (fontset));
|
||
eassert (f == XFRAME (FONTSET_FRAME (fontset)));
|
||
free_realized_fontset (f, fontset);
|
||
ASET (Vfontset_table, face->fontset, Qnil);
|
||
if (face->fontset < next_fontset_id)
|
||
next_fontset_id = face->fontset;
|
||
if (! NILP (FONTSET_DEFAULT (fontset)))
|
||
{
|
||
int id = XINT (FONTSET_ID (FONTSET_DEFAULT (fontset)));
|
||
|
||
fontset = AREF (Vfontset_table, id);
|
||
eassert (!NILP (fontset) && ! BASE_FONTSET_P (fontset));
|
||
eassert (f == XFRAME (FONTSET_FRAME (fontset)));
|
||
free_realized_fontset (f, fontset);
|
||
ASET (Vfontset_table, id, Qnil);
|
||
if (id < next_fontset_id)
|
||
next_fontset_id = face->fontset;
|
||
}
|
||
face->fontset = -1;
|
||
}
|
||
|
||
|
||
#if 0
|
||
/* Return true if FACE is suitable for displaying character C.
|
||
Called from the macro FACE_SUITABLE_FOR_CHAR_P
|
||
when C is not an ASCII character. */
|
||
|
||
bool
|
||
face_suitable_for_char_p (struct face *face, int c)
|
||
{
|
||
Lisp_Object fontset, rfont_def;
|
||
|
||
fontset = FONTSET_FROM_ID (face->fontset);
|
||
rfont_def = fontset_font (fontset, c, NULL, -1);
|
||
return (VECTORP (rfont_def)
|
||
&& INTEGERP (RFONT_DEF_FACE (rfont_def))
|
||
&& face->id == XINT (RFONT_DEF_FACE (rfont_def)));
|
||
}
|
||
#endif
|
||
|
||
|
||
/* Return ID of face suitable for displaying character C on frame F.
|
||
FACE must be realized for ASCII characters in advance. Called from
|
||
the macro FACE_FOR_CHAR. */
|
||
|
||
int
|
||
face_for_char (FRAME_PTR f, struct face *face, int c, int pos, Lisp_Object object)
|
||
{
|
||
Lisp_Object fontset, rfont_def, charset;
|
||
int face_id;
|
||
int id;
|
||
|
||
/* If face->fontset is negative (that happens when no font is found
|
||
for face), just return face->ascii_face because we can't do
|
||
anything. Perhaps, we should fix the callers to assure
|
||
that face->fontset is always valid. */
|
||
if (ASCII_CHAR_P (c) || face->fontset < 0)
|
||
return face->ascii_face->id;
|
||
|
||
eassert (fontset_id_valid_p (face->fontset));
|
||
fontset = FONTSET_FROM_ID (face->fontset);
|
||
eassert (!BASE_FONTSET_P (fontset));
|
||
|
||
if (pos < 0)
|
||
{
|
||
id = -1;
|
||
charset = Qnil;
|
||
}
|
||
else
|
||
{
|
||
charset = Fget_char_property (make_number (pos), Qcharset, object);
|
||
if (CHARSETP (charset))
|
||
{
|
||
Lisp_Object val;
|
||
|
||
val = assq_no_quit (charset, Vfont_encoding_charset_alist);
|
||
if (CONSP (val) && CHARSETP (XCDR (val)))
|
||
charset = XCDR (val);
|
||
id = XINT (CHARSET_SYMBOL_ID (charset));
|
||
}
|
||
else
|
||
id = -1;
|
||
}
|
||
|
||
rfont_def = fontset_font (fontset, c, face, id);
|
||
if (VECTORP (rfont_def))
|
||
{
|
||
if (INTEGERP (RFONT_DEF_FACE (rfont_def)))
|
||
face_id = XINT (RFONT_DEF_FACE (rfont_def));
|
||
else
|
||
{
|
||
Lisp_Object font_object;
|
||
|
||
font_object = RFONT_DEF_OBJECT (rfont_def);
|
||
face_id = face_for_font (f, font_object, face);
|
||
RFONT_DEF_SET_FACE (rfont_def, face_id);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (INTEGERP (FONTSET_NOFONT_FACE (fontset)))
|
||
face_id = XINT (FONTSET_NOFONT_FACE (fontset));
|
||
else
|
||
{
|
||
face_id = face_for_font (f, Qnil, face);
|
||
set_fontset_nofont_face (fontset, make_number (face_id));
|
||
}
|
||
}
|
||
eassert (face_id >= 0);
|
||
return face_id;
|
||
}
|
||
|
||
|
||
Lisp_Object
|
||
font_for_char (struct face *face, int c, int pos, Lisp_Object object)
|
||
{
|
||
Lisp_Object fontset, rfont_def, charset;
|
||
int id;
|
||
|
||
if (ASCII_CHAR_P (c))
|
||
{
|
||
Lisp_Object font_object;
|
||
|
||
XSETFONT (font_object, face->ascii_face->font);
|
||
return font_object;
|
||
}
|
||
|
||
eassert (fontset_id_valid_p (face->fontset));
|
||
fontset = FONTSET_FROM_ID (face->fontset);
|
||
eassert (!BASE_FONTSET_P (fontset));
|
||
if (pos < 0)
|
||
{
|
||
id = -1;
|
||
charset = Qnil;
|
||
}
|
||
else
|
||
{
|
||
charset = Fget_char_property (make_number (pos), Qcharset, object);
|
||
if (CHARSETP (charset))
|
||
{
|
||
Lisp_Object val;
|
||
|
||
val = assq_no_quit (charset, Vfont_encoding_charset_alist);
|
||
if (CONSP (val) && CHARSETP (XCDR (val)))
|
||
charset = XCDR (val);
|
||
id = XINT (CHARSET_SYMBOL_ID (charset));
|
||
}
|
||
else
|
||
id = -1;
|
||
}
|
||
|
||
rfont_def = fontset_font (fontset, c, face, id);
|
||
return (VECTORP (rfont_def)
|
||
? RFONT_DEF_OBJECT (rfont_def)
|
||
: Qnil);
|
||
}
|
||
|
||
|
||
/* Make a realized fontset for ASCII face FACE on frame F from the
|
||
base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the
|
||
default fontset as the base. Value is the id of the new fontset.
|
||
Called from realize_x_face. */
|
||
|
||
int
|
||
make_fontset_for_ascii_face (FRAME_PTR f, int base_fontset_id, struct face *face)
|
||
{
|
||
Lisp_Object base_fontset, fontset, frame;
|
||
|
||
XSETFRAME (frame, f);
|
||
if (base_fontset_id >= 0)
|
||
{
|
||
base_fontset = FONTSET_FROM_ID (base_fontset_id);
|
||
if (!BASE_FONTSET_P (base_fontset))
|
||
base_fontset = FONTSET_BASE (base_fontset);
|
||
eassert (BASE_FONTSET_P (base_fontset));
|
||
}
|
||
else
|
||
base_fontset = Vdefault_fontset;
|
||
|
||
fontset = make_fontset (frame, Qnil, base_fontset);
|
||
return XINT (FONTSET_ID (fontset));
|
||
}
|
||
|
||
|
||
|
||
/* Cache data used by fontset_pattern_regexp. The car part is a
|
||
pattern string containing at least one wild card, the cdr part is
|
||
the corresponding regular expression. */
|
||
static Lisp_Object Vcached_fontset_data;
|
||
|
||
#define CACHED_FONTSET_NAME SSDATA (XCAR (Vcached_fontset_data))
|
||
#define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data))
|
||
|
||
/* If fontset name PATTERN contains any wild card, return regular
|
||
expression corresponding to PATTERN. */
|
||
|
||
static Lisp_Object
|
||
fontset_pattern_regexp (Lisp_Object pattern)
|
||
{
|
||
if (!strchr (SSDATA (pattern), '*')
|
||
&& !strchr (SSDATA (pattern), '?'))
|
||
/* PATTERN does not contain any wild cards. */
|
||
return Qnil;
|
||
|
||
if (!CONSP (Vcached_fontset_data)
|
||
|| strcmp (SSDATA (pattern), CACHED_FONTSET_NAME))
|
||
{
|
||
/* We must at first update the cached data. */
|
||
unsigned char *regex, *p0, *p1;
|
||
int ndashes = 0, nstars = 0, nescs = 0;
|
||
|
||
for (p0 = SDATA (pattern); *p0; p0++)
|
||
{
|
||
if (*p0 == '-')
|
||
ndashes++;
|
||
else if (*p0 == '*')
|
||
nstars++;
|
||
else if (*p0 == '['
|
||
|| *p0 == '.' || *p0 == '\\'
|
||
|| *p0 == '+' || *p0 == '^'
|
||
|| *p0 == '$')
|
||
nescs++;
|
||
}
|
||
|
||
/* If PATTERN is not full XLFD we convert "*" to ".*". Otherwise
|
||
we convert "*" to "[^-]*" which is much faster in regular
|
||
expression matching. */
|
||
if (ndashes < 14)
|
||
p1 = regex = alloca (SBYTES (pattern) + 2 * nstars + 2 * nescs + 1);
|
||
else
|
||
p1 = regex = alloca (SBYTES (pattern) + 5 * nstars + 2 * nescs + 1);
|
||
|
||
*p1++ = '^';
|
||
for (p0 = SDATA (pattern); *p0; p0++)
|
||
{
|
||
if (*p0 == '*')
|
||
{
|
||
if (ndashes < 14)
|
||
*p1++ = '.';
|
||
else
|
||
*p1++ = '[', *p1++ = '^', *p1++ = '-', *p1++ = ']';
|
||
*p1++ = '*';
|
||
}
|
||
else if (*p0 == '?')
|
||
*p1++ = '.';
|
||
else if (*p0 == '['
|
||
|| *p0 == '.' || *p0 == '\\'
|
||
|| *p0 == '+' || *p0 == '^'
|
||
|| *p0 == '$')
|
||
*p1++ = '\\', *p1++ = *p0;
|
||
else
|
||
*p1++ = *p0;
|
||
}
|
||
*p1++ = '$';
|
||
*p1++ = 0;
|
||
|
||
Vcached_fontset_data = Fcons (build_string (SSDATA (pattern)),
|
||
build_string ((char *) regex));
|
||
}
|
||
|
||
return CACHED_FONTSET_REGEX;
|
||
}
|
||
|
||
/* Return ID of the base fontset named NAME. If there's no such
|
||
fontset, return -1. NAME_PATTERN specifies how to treat NAME as this:
|
||
0: pattern containing '*' and '?' as wildcards
|
||
1: regular expression
|
||
2: literal fontset name
|
||
*/
|
||
|
||
int
|
||
fs_query_fontset (Lisp_Object name, int name_pattern)
|
||
{
|
||
Lisp_Object tem;
|
||
int i;
|
||
|
||
name = Fdowncase (name);
|
||
if (name_pattern != 1)
|
||
{
|
||
tem = Frassoc (name, Vfontset_alias_alist);
|
||
if (NILP (tem))
|
||
tem = Fassoc (name, Vfontset_alias_alist);
|
||
if (CONSP (tem) && STRINGP (XCAR (tem)))
|
||
name = XCAR (tem);
|
||
else if (name_pattern == 0)
|
||
{
|
||
tem = fontset_pattern_regexp (name);
|
||
if (STRINGP (tem))
|
||
{
|
||
name = tem;
|
||
name_pattern = 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
for (i = 0; i < ASIZE (Vfontset_table); i++)
|
||
{
|
||
Lisp_Object fontset, this_name;
|
||
|
||
fontset = FONTSET_FROM_ID (i);
|
||
if (NILP (fontset)
|
||
|| !BASE_FONTSET_P (fontset))
|
||
continue;
|
||
|
||
this_name = FONTSET_NAME (fontset);
|
||
if (name_pattern == 1
|
||
? fast_string_match_ignore_case (name, this_name) >= 0
|
||
: !xstrcasecmp (SSDATA (name), SSDATA (this_name)))
|
||
return i;
|
||
}
|
||
return -1;
|
||
}
|
||
|
||
|
||
DEFUN ("query-fontset", Fquery_fontset, Squery_fontset, 1, 2, 0,
|
||
doc: /* Return the name of a fontset that matches PATTERN.
|
||
The value is nil if there is no matching fontset.
|
||
PATTERN can contain `*' or `?' as a wildcard
|
||
just as X font name matching algorithm allows.
|
||
If REGEXPP is non-nil, PATTERN is a regular expression. */)
|
||
(Lisp_Object pattern, Lisp_Object regexpp)
|
||
{
|
||
Lisp_Object fontset;
|
||
int id;
|
||
|
||
check_window_system (NULL);
|
||
|
||
CHECK_STRING (pattern);
|
||
|
||
if (SCHARS (pattern) == 0)
|
||
return Qnil;
|
||
|
||
id = fs_query_fontset (pattern, !NILP (regexpp));
|
||
if (id < 0)
|
||
return Qnil;
|
||
|
||
fontset = FONTSET_FROM_ID (id);
|
||
return FONTSET_NAME (fontset);
|
||
}
|
||
|
||
/* Return a list of base fontset names matching PATTERN on frame F. */
|
||
|
||
Lisp_Object
|
||
list_fontsets (FRAME_PTR f, Lisp_Object pattern, int size)
|
||
{
|
||
Lisp_Object frame, regexp, val;
|
||
int id;
|
||
|
||
XSETFRAME (frame, f);
|
||
|
||
regexp = fontset_pattern_regexp (pattern);
|
||
val = Qnil;
|
||
|
||
for (id = 0; id < ASIZE (Vfontset_table); id++)
|
||
{
|
||
Lisp_Object fontset, name;
|
||
|
||
fontset = FONTSET_FROM_ID (id);
|
||
if (NILP (fontset)
|
||
|| !BASE_FONTSET_P (fontset)
|
||
|| !EQ (frame, FONTSET_FRAME (fontset)))
|
||
continue;
|
||
name = FONTSET_NAME (fontset);
|
||
|
||
if (STRINGP (regexp)
|
||
? (fast_string_match (regexp, name) < 0)
|
||
: strcmp (SSDATA (pattern), SSDATA (name)))
|
||
continue;
|
||
|
||
val = Fcons (Fcopy_sequence (FONTSET_NAME (fontset)), val);
|
||
}
|
||
|
||
return val;
|
||
}
|
||
|
||
|
||
/* Free all realized fontsets whose base fontset is BASE. */
|
||
|
||
static void
|
||
free_realized_fontsets (Lisp_Object base)
|
||
{
|
||
int id;
|
||
|
||
#if 0
|
||
/* For the moment, this doesn't work because free_realized_face
|
||
doesn't remove FACE from a cache. Until we find a solution, we
|
||
suppress this code, and simply use Fclear_face_cache even though
|
||
that is not efficient. */
|
||
block_input ();
|
||
for (id = 0; id < ASIZE (Vfontset_table); id++)
|
||
{
|
||
Lisp_Object this = AREF (Vfontset_table, id);
|
||
|
||
if (EQ (FONTSET_BASE (this), base))
|
||
{
|
||
Lisp_Object tail;
|
||
|
||
for (tail = FONTSET_FACE_ALIST (this); CONSP (tail);
|
||
tail = XCDR (tail))
|
||
{
|
||
FRAME_PTR f = XFRAME (FONTSET_FRAME (this));
|
||
int face_id = XINT (XCDR (XCAR (tail)));
|
||
struct face *face = FACE_FROM_ID (f, face_id);
|
||
|
||
/* Face THIS itself is also freed by the following call. */
|
||
free_realized_face (f, face);
|
||
}
|
||
}
|
||
}
|
||
unblock_input ();
|
||
#else /* not 0 */
|
||
/* But, we don't have to call Fclear_face_cache if no fontset has
|
||
been realized from BASE. */
|
||
for (id = 0; id < ASIZE (Vfontset_table); id++)
|
||
{
|
||
Lisp_Object this = AREF (Vfontset_table, id);
|
||
|
||
if (CHAR_TABLE_P (this) && EQ (FONTSET_BASE (this), base))
|
||
{
|
||
Fclear_face_cache (Qt);
|
||
break;
|
||
}
|
||
}
|
||
#endif /* not 0 */
|
||
}
|
||
|
||
|
||
/* Check validity of NAME as a fontset name and return the
|
||
corresponding fontset. If not valid, signal an error.
|
||
|
||
If NAME is t, return Vdefault_fontset. If NAME is nil, return the
|
||
fontset of *FRAME.
|
||
|
||
Set *FRAME to the actual frame. */
|
||
|
||
static Lisp_Object
|
||
check_fontset_name (Lisp_Object name, Lisp_Object *frame)
|
||
{
|
||
int id;
|
||
struct frame *f = decode_live_frame (*frame);
|
||
|
||
XSETFRAME (*frame, f);
|
||
|
||
if (EQ (name, Qt))
|
||
return Vdefault_fontset;
|
||
if (NILP (name))
|
||
id = FRAME_FONTSET (f);
|
||
else
|
||
{
|
||
CHECK_STRING (name);
|
||
/* First try NAME as literal. */
|
||
id = fs_query_fontset (name, 2);
|
||
if (id < 0)
|
||
/* For backward compatibility, try again NAME as pattern. */
|
||
id = fs_query_fontset (name, 0);
|
||
if (id < 0)
|
||
error ("Fontset `%s' does not exist", SDATA (name));
|
||
}
|
||
return FONTSET_FROM_ID (id);
|
||
}
|
||
|
||
static void
|
||
accumulate_script_ranges (Lisp_Object arg, Lisp_Object range, Lisp_Object val)
|
||
{
|
||
if (EQ (XCAR (arg), val))
|
||
{
|
||
if (CONSP (range))
|
||
XSETCDR (arg, Fcons (Fcons (XCAR (range), XCDR (range)), XCDR (arg)));
|
||
else
|
||
XSETCDR (arg, Fcons (Fcons (range, range), XCDR (arg)));
|
||
}
|
||
}
|
||
|
||
|
||
/* Callback function for map_charset_chars in Fset_fontset_font.
|
||
ARG is a vector [ FONTSET FONT_DEF ADD ASCII SCRIPT_RANGE_LIST ].
|
||
|
||
In FONTSET, set FONT_DEF in a fashion specified by ADD for
|
||
characters in RANGE and ranges in SCRIPT_RANGE_LIST before RANGE.
|
||
The consumed ranges are popped up from SCRIPT_RANGE_LIST, and the
|
||
new SCRIPT_RANGE_LIST is stored in ARG.
|
||
|
||
If ASCII is nil, don't set FONT_DEF for ASCII characters. It is
|
||
assured that SCRIPT_RANGE_LIST doesn't contain ASCII in that
|
||
case. */
|
||
|
||
static void
|
||
set_fontset_font (Lisp_Object arg, Lisp_Object range)
|
||
{
|
||
Lisp_Object fontset, font_def, add, ascii, script_range_list;
|
||
int from = XINT (XCAR (range)), to = XINT (XCDR (range));
|
||
|
||
fontset = AREF (arg, 0);
|
||
font_def = AREF (arg, 1);
|
||
add = AREF (arg, 2);
|
||
ascii = AREF (arg, 3);
|
||
script_range_list = AREF (arg, 4);
|
||
|
||
if (NILP (ascii) && from < 0x80)
|
||
{
|
||
if (to < 0x80)
|
||
return;
|
||
from = 0x80;
|
||
range = Fcons (make_number (0x80), XCDR (range));
|
||
}
|
||
|
||
#define SCRIPT_FROM XINT (XCAR (XCAR (script_range_list)))
|
||
#define SCRIPT_TO XINT (XCDR (XCAR (script_range_list)))
|
||
#define POP_SCRIPT_RANGE() script_range_list = XCDR (script_range_list)
|
||
|
||
for (; CONSP (script_range_list) && SCRIPT_TO < from; POP_SCRIPT_RANGE ())
|
||
FONTSET_ADD (fontset, XCAR (script_range_list), font_def, add);
|
||
if (CONSP (script_range_list))
|
||
{
|
||
if (SCRIPT_FROM < from)
|
||
range = Fcons (make_number (SCRIPT_FROM), XCDR (range));
|
||
while (CONSP (script_range_list) && SCRIPT_TO <= to)
|
||
POP_SCRIPT_RANGE ();
|
||
if (CONSP (script_range_list) && SCRIPT_FROM <= to)
|
||
XSETCAR (XCAR (script_range_list), make_number (to + 1));
|
||
}
|
||
|
||
FONTSET_ADD (fontset, range, font_def, add);
|
||
ASET (arg, 4, script_range_list);
|
||
}
|
||
|
||
static void update_auto_fontset_alist (Lisp_Object, Lisp_Object);
|
||
|
||
|
||
DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 5, 0,
|
||
doc: /*
|
||
Modify fontset NAME to use FONT-SPEC for TARGET characters.
|
||
|
||
NAME is a fontset name string, nil for the fontset of FRAME, or t for
|
||
the default fontset.
|
||
|
||
TARGET may be a cons; (FROM . TO), where FROM and TO are characters.
|
||
In that case, use FONT-SPEC for all characters in the range FROM and
|
||
TO (inclusive).
|
||
|
||
TARGET may be a script name symbol. In that case, use FONT-SPEC for
|
||
all characters that belong to the script.
|
||
|
||
TARGET may be a charset. In that case, use FONT-SPEC for all
|
||
characters in the charset.
|
||
|
||
TARGET may be nil. In that case, use FONT-SPEC for any characters for
|
||
that no FONT-SPEC is specified.
|
||
|
||
FONT-SPEC may one of these:
|
||
* A font-spec object made by the function `font-spec' (which see).
|
||
* A cons (FAMILY . REGISTRY), where FAMILY is a font family name and
|
||
REGISTRY is a font registry name. FAMILY may contain foundry
|
||
name, and REGISTRY may contain encoding name.
|
||
* A font name string.
|
||
* nil, which explicitly specifies that there's no font for TARGET.
|
||
|
||
Optional 4th argument FRAME is a frame or nil for the selected frame
|
||
that is concerned in the case that NAME is nil.
|
||
|
||
Optional 5th argument ADD, if non-nil, specifies how to add FONT-SPEC
|
||
to the font specifications for TARGET previously set. If it is
|
||
`prepend', FONT-SPEC is prepended. If it is `append', FONT-SPEC is
|
||
appended. By default, FONT-SPEC overrides the previous settings. */)
|
||
(Lisp_Object name, Lisp_Object target, Lisp_Object font_spec, Lisp_Object frame, Lisp_Object add)
|
||
{
|
||
Lisp_Object fontset;
|
||
Lisp_Object font_def, registry, family;
|
||
Lisp_Object range_list;
|
||
struct charset *charset = NULL;
|
||
Lisp_Object fontname;
|
||
bool ascii_changed = 0;
|
||
|
||
fontset = check_fontset_name (name, &frame);
|
||
|
||
fontname = Qnil;
|
||
if (CONSP (font_spec))
|
||
{
|
||
Lisp_Object spec = Ffont_spec (0, NULL);
|
||
|
||
font_parse_family_registry (XCAR (font_spec), XCDR (font_spec), spec);
|
||
font_spec = spec;
|
||
fontname = Ffont_xlfd_name (font_spec, Qnil);
|
||
}
|
||
else if (STRINGP (font_spec))
|
||
{
|
||
Lisp_Object args[2];
|
||
|
||
fontname = font_spec;
|
||
args[0] = QCname;
|
||
args[1] = font_spec;
|
||
font_spec = Ffont_spec (2, args);
|
||
}
|
||
else if (FONT_SPEC_P (font_spec))
|
||
fontname = Ffont_xlfd_name (font_spec, Qnil);
|
||
else if (! NILP (font_spec))
|
||
Fsignal (Qfont, list2 (build_string ("Invalid font-spec"), font_spec));
|
||
|
||
if (! NILP (font_spec))
|
||
{
|
||
Lisp_Object encoding, repertory;
|
||
|
||
family = AREF (font_spec, FONT_FAMILY_INDEX);
|
||
if (! NILP (family) )
|
||
family = SYMBOL_NAME (family);
|
||
registry = AREF (font_spec, FONT_REGISTRY_INDEX);
|
||
if (! NILP (registry))
|
||
registry = Fdowncase (SYMBOL_NAME (registry));
|
||
encoding = find_font_encoding (concat3 (family, build_string ("-"),
|
||
registry));
|
||
if (NILP (encoding))
|
||
encoding = Qascii;
|
||
|
||
if (SYMBOLP (encoding))
|
||
{
|
||
CHECK_CHARSET (encoding);
|
||
encoding = repertory = CHARSET_SYMBOL_ID (encoding);
|
||
}
|
||
else
|
||
{
|
||
repertory = XCDR (encoding);
|
||
encoding = XCAR (encoding);
|
||
CHECK_CHARSET (encoding);
|
||
encoding = CHARSET_SYMBOL_ID (encoding);
|
||
if (! NILP (repertory) && SYMBOLP (repertory))
|
||
{
|
||
CHECK_CHARSET (repertory);
|
||
repertory = CHARSET_SYMBOL_ID (repertory);
|
||
}
|
||
}
|
||
FONT_DEF_NEW (font_def, font_spec, encoding, repertory);
|
||
}
|
||
else
|
||
font_def = Qnil;
|
||
|
||
if (CHARACTERP (target))
|
||
{
|
||
if (XFASTINT (target) < 0x80)
|
||
error ("Can't set a font for partial ASCII range");
|
||
range_list = list1 (Fcons (target, target));
|
||
}
|
||
else if (CONSP (target))
|
||
{
|
||
Lisp_Object from, to;
|
||
|
||
from = Fcar (target);
|
||
to = Fcdr (target);
|
||
CHECK_CHARACTER (from);
|
||
CHECK_CHARACTER (to);
|
||
if (XFASTINT (from) < 0x80)
|
||
{
|
||
if (XFASTINT (from) != 0 || XFASTINT (to) < 0x7F)
|
||
error ("Can't set a font for partial ASCII range");
|
||
ascii_changed = 1;
|
||
}
|
||
range_list = list1 (target);
|
||
}
|
||
else if (SYMBOLP (target) && !NILP (target))
|
||
{
|
||
Lisp_Object script_list;
|
||
Lisp_Object val;
|
||
|
||
range_list = Qnil;
|
||
script_list = XCHAR_TABLE (Vchar_script_table)->extras[0];
|
||
if (! NILP (Fmemq (target, script_list)))
|
||
{
|
||
if (EQ (target, Qlatin))
|
||
ascii_changed = 1;
|
||
val = list1 (target);
|
||
map_char_table (accumulate_script_ranges, Qnil, Vchar_script_table,
|
||
val);
|
||
range_list = Fnreverse (XCDR (val));
|
||
}
|
||
if (CHARSETP (target))
|
||
{
|
||
CHECK_CHARSET_GET_CHARSET (target, charset);
|
||
if (charset->ascii_compatible_p)
|
||
ascii_changed = 1;
|
||
}
|
||
else if (NILP (range_list))
|
||
error ("Invalid script or charset name: %s",
|
||
SDATA (SYMBOL_NAME (target)));
|
||
}
|
||
else if (NILP (target))
|
||
range_list = list1 (Qnil);
|
||
else
|
||
error ("Invalid target for setting a font");
|
||
|
||
if (ascii_changed)
|
||
{
|
||
Lisp_Object val;
|
||
|
||
if (NILP (font_spec))
|
||
error ("Can't set ASCII font to nil");
|
||
val = CHAR_TABLE_REF (fontset, 0);
|
||
if (! NILP (val) && EQ (add, Qappend))
|
||
/* We are going to change just an additional font for ASCII. */
|
||
ascii_changed = 0;
|
||
}
|
||
|
||
if (charset)
|
||
{
|
||
Lisp_Object arg;
|
||
|
||
arg = make_uninit_vector (5);
|
||
ASET (arg, 0, fontset);
|
||
ASET (arg, 1, font_def);
|
||
ASET (arg, 2, add);
|
||
ASET (arg, 3, ascii_changed ? Qt : Qnil);
|
||
ASET (arg, 4, range_list);
|
||
|
||
map_charset_chars (set_fontset_font, Qnil, arg, charset,
|
||
CHARSET_MIN_CODE (charset),
|
||
CHARSET_MAX_CODE (charset));
|
||
range_list = AREF (arg, 4);
|
||
}
|
||
for (; CONSP (range_list); range_list = XCDR (range_list))
|
||
FONTSET_ADD (fontset, XCAR (range_list), font_def, add);
|
||
|
||
if (ascii_changed)
|
||
{
|
||
Lisp_Object tail, fr, alist;
|
||
int fontset_id = XINT (FONTSET_ID (fontset));
|
||
|
||
set_fontset_ascii (fontset, fontname);
|
||
name = FONTSET_NAME (fontset);
|
||
FOR_EACH_FRAME (tail, fr)
|
||
{
|
||
FRAME_PTR f = XFRAME (fr);
|
||
Lisp_Object font_object;
|
||
struct face *face;
|
||
|
||
if (FRAME_INITIAL_P (f) || FRAME_TERMCAP_P (f))
|
||
continue;
|
||
if (fontset_id != FRAME_FONTSET (f))
|
||
continue;
|
||
face = FACE_FROM_ID (f, DEFAULT_FACE_ID);
|
||
if (face)
|
||
font_object = font_load_for_lface (f, face->lface, font_spec);
|
||
else
|
||
font_object = font_open_by_spec (f, font_spec);
|
||
if (! NILP (font_object))
|
||
{
|
||
update_auto_fontset_alist (font_object, fontset);
|
||
alist = list1 (Fcons (Qfont, Fcons (name, font_object)));
|
||
Fmodify_frame_parameters (fr, alist);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Free all realized fontsets whose base is FONTSET. This way, the
|
||
specified character(s) are surely redisplayed by a correct
|
||
font. */
|
||
free_realized_fontsets (fontset);
|
||
|
||
return Qnil;
|
||
}
|
||
|
||
|
||
DEFUN ("new-fontset", Fnew_fontset, Snew_fontset, 2, 2, 0,
|
||
doc: /* Create a new fontset NAME from font information in FONTLIST.
|
||
|
||
FONTLIST is an alist of scripts vs the corresponding font specification list.
|
||
Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a
|
||
character of SCRIPT is displayed by a font that matches one of
|
||
FONT-SPEC.
|
||
|
||
SCRIPT is a symbol that appears in the first extra slot of the
|
||
char-table `char-script-table'.
|
||
|
||
FONT-SPEC is a vector, a cons, or a string. See the documentation of
|
||
`set-fontset-font' for the meaning. */)
|
||
(Lisp_Object name, Lisp_Object fontlist)
|
||
{
|
||
Lisp_Object fontset;
|
||
int id;
|
||
|
||
CHECK_STRING (name);
|
||
CHECK_LIST (fontlist);
|
||
|
||
name = Fdowncase (name);
|
||
id = fs_query_fontset (name, 0);
|
||
if (id < 0)
|
||
{
|
||
Lisp_Object font_spec = Ffont_spec (0, NULL);
|
||
Lisp_Object short_name;
|
||
char xlfd[256];
|
||
int len;
|
||
|
||
if (font_parse_xlfd (SSDATA (name), SBYTES (name), font_spec) < 0)
|
||
error ("Fontset name must be in XLFD format");
|
||
short_name = AREF (font_spec, FONT_REGISTRY_INDEX);
|
||
if (strncmp (SSDATA (SYMBOL_NAME (short_name)), "fontset-", 8)
|
||
|| SBYTES (SYMBOL_NAME (short_name)) < 9)
|
||
error ("Registry field of fontset name must be \"fontset-*\"");
|
||
Vfontset_alias_alist = Fcons (Fcons (name, SYMBOL_NAME (short_name)),
|
||
Vfontset_alias_alist);
|
||
ASET (font_spec, FONT_REGISTRY_INDEX, Qiso8859_1);
|
||
fontset = make_fontset (Qnil, name, Qnil);
|
||
len = font_unparse_xlfd (font_spec, 0, xlfd, 256);
|
||
if (len < 0)
|
||
error ("Invalid fontset name (perhaps too long): %s", SDATA (name));
|
||
set_fontset_ascii (fontset, make_unibyte_string (xlfd, len));
|
||
}
|
||
else
|
||
{
|
||
fontset = FONTSET_FROM_ID (id);
|
||
free_realized_fontsets (fontset);
|
||
Fset_char_table_range (fontset, Qt, Qnil);
|
||
}
|
||
|
||
for (; CONSP (fontlist); fontlist = XCDR (fontlist))
|
||
{
|
||
Lisp_Object elt, script;
|
||
|
||
elt = XCAR (fontlist);
|
||
script = Fcar (elt);
|
||
elt = Fcdr (elt);
|
||
if (CONSP (elt) && (NILP (XCDR (elt)) || CONSP (XCDR (elt))))
|
||
for (; CONSP (elt); elt = XCDR (elt))
|
||
Fset_fontset_font (name, script, XCAR (elt), Qnil, Qappend);
|
||
else
|
||
Fset_fontset_font (name, script, elt, Qnil, Qappend);
|
||
}
|
||
return name;
|
||
}
|
||
|
||
|
||
/* Alist of automatically created fontsets. Each element is a cons
|
||
(FONT-SPEC . FONTSET-ID). */
|
||
static Lisp_Object auto_fontset_alist;
|
||
|
||
/* Number of automatically created fontsets. */
|
||
static ptrdiff_t num_auto_fontsets;
|
||
|
||
/* Return a fontset synthesized from FONT-OBJECT. This is called from
|
||
x_new_font when FONT-OBJECT is used for the default ASCII font of a
|
||
frame, and the returned fontset is used for the default fontset of
|
||
that frame. The fontset specifies a font of the same registry as
|
||
FONT-OBJECT for all characters in the repertory of the registry
|
||
(see Vfont_encoding_alist). If the repertory is not known, the
|
||
fontset specifies the font for all Latin characters assuming that a
|
||
user intends to use FONT-OBJECT for Latin characters. */
|
||
|
||
int
|
||
fontset_from_font (Lisp_Object font_object)
|
||
{
|
||
Lisp_Object font_name = font_get_name (font_object);
|
||
Lisp_Object font_spec = copy_font_spec (font_object);
|
||
Lisp_Object registry = AREF (font_spec, FONT_REGISTRY_INDEX);
|
||
Lisp_Object fontset_spec, alias, name, fontset;
|
||
Lisp_Object val;
|
||
|
||
val = assoc_no_quit (font_spec, auto_fontset_alist);
|
||
if (CONSP (val))
|
||
return XINT (FONTSET_ID (XCDR (val)));
|
||
if (num_auto_fontsets++ == 0)
|
||
alias = intern ("fontset-startup");
|
||
else
|
||
{
|
||
char temp[sizeof "fontset-auto" + INT_STRLEN_BOUND (ptrdiff_t)];
|
||
|
||
sprintf (temp, "fontset-auto%"pD"d", num_auto_fontsets - 1);
|
||
alias = intern (temp);
|
||
}
|
||
fontset_spec = copy_font_spec (font_spec);
|
||
ASET (fontset_spec, FONT_REGISTRY_INDEX, alias);
|
||
name = Ffont_xlfd_name (fontset_spec, Qnil);
|
||
eassert (!NILP (name));
|
||
fontset = make_fontset (Qnil, name, Qnil);
|
||
Vfontset_alias_alist = Fcons (Fcons (name, SYMBOL_NAME (alias)),
|
||
Vfontset_alias_alist);
|
||
alias = Fdowncase (AREF (font_object, FONT_NAME_INDEX));
|
||
Vfontset_alias_alist = Fcons (Fcons (name, alias), Vfontset_alias_alist);
|
||
auto_fontset_alist = Fcons (Fcons (font_spec, fontset), auto_fontset_alist);
|
||
font_spec = Ffont_spec (0, NULL);
|
||
ASET (font_spec, FONT_REGISTRY_INDEX, registry);
|
||
{
|
||
Lisp_Object target = find_font_encoding (SYMBOL_NAME (registry));
|
||
|
||
if (CONSP (target))
|
||
target = XCDR (target);
|
||
if (! CHARSETP (target))
|
||
target = Qlatin;
|
||
Fset_fontset_font (name, target, font_spec, Qnil, Qnil);
|
||
Fset_fontset_font (name, Qnil, font_spec, Qnil, Qnil);
|
||
}
|
||
|
||
set_fontset_ascii (fontset, font_name);
|
||
|
||
return XINT (FONTSET_ID (fontset));
|
||
}
|
||
|
||
|
||
/* Update auto_fontset_alist for FONTSET. When an ASCII font of
|
||
FONTSET is changed, we delete an entry of FONTSET if any from
|
||
auto_fontset_alist so that FONTSET is not re-used by
|
||
fontset_from_font. */
|
||
|
||
static void
|
||
update_auto_fontset_alist (Lisp_Object font_object, Lisp_Object fontset)
|
||
{
|
||
Lisp_Object prev, tail;
|
||
|
||
for (prev = Qnil, tail = auto_fontset_alist; CONSP (tail);
|
||
prev = tail, tail = XCDR (tail))
|
||
if (EQ (fontset, XCDR (XCAR (tail))))
|
||
{
|
||
if (NILP (prev))
|
||
auto_fontset_alist = XCDR (tail);
|
||
else
|
||
XSETCDR (prev, XCDR (tail));
|
||
break;
|
||
}
|
||
}
|
||
|
||
|
||
/* Return a cons (FONT-OBJECT . GLYPH-CODE).
|
||
FONT-OBJECT is the font for the character at POSITION in the current
|
||
buffer. This is computed from all the text properties and overlays
|
||
that apply to POSITION. POSITION may be nil, in which case,
|
||
FONT-SPEC is the font for displaying the character CH with the
|
||
default face.
|
||
|
||
GLYPH-CODE is the glyph code in the font to use for the character.
|
||
|
||
If the 2nd optional arg CH is non-nil, it is a character to check
|
||
the font instead of the character at POSITION.
|
||
|
||
It returns nil in the following cases:
|
||
|
||
(1) The window system doesn't have a font for the character (thus
|
||
it is displayed by an empty box).
|
||
|
||
(2) The character code is invalid.
|
||
|
||
(3) If POSITION is not nil, and the current buffer is not displayed
|
||
in any window.
|
||
|
||
In addition, the returned font name may not take into account of
|
||
such redisplay engine hooks as what used in jit-lock-mode if
|
||
POSITION is currently not visible. */
|
||
|
||
|
||
DEFUN ("internal-char-font", Finternal_char_font, Sinternal_char_font, 1, 2, 0,
|
||
doc: /* For internal use only. */)
|
||
(Lisp_Object position, Lisp_Object ch)
|
||
{
|
||
ptrdiff_t pos, pos_byte, dummy;
|
||
int face_id;
|
||
int c;
|
||
struct frame *f;
|
||
struct face *face;
|
||
|
||
if (NILP (position))
|
||
{
|
||
CHECK_CHARACTER (ch);
|
||
c = XINT (ch);
|
||
f = XFRAME (selected_frame);
|
||
face_id = lookup_basic_face (f, DEFAULT_FACE_ID);
|
||
pos = -1;
|
||
}
|
||
else
|
||
{
|
||
Lisp_Object window;
|
||
struct window *w;
|
||
|
||
CHECK_NUMBER_COERCE_MARKER (position);
|
||
if (! (BEGV <= XINT (position) && XINT (position) < ZV))
|
||
args_out_of_range_3 (position, make_number (BEGV), make_number (ZV));
|
||
pos = XINT (position);
|
||
pos_byte = CHAR_TO_BYTE (pos);
|
||
if (NILP (ch))
|
||
c = FETCH_CHAR (pos_byte);
|
||
else
|
||
{
|
||
CHECK_NATNUM (ch);
|
||
c = XINT (ch);
|
||
}
|
||
window = Fget_buffer_window (Fcurrent_buffer (), Qnil);
|
||
if (NILP (window))
|
||
return Qnil;
|
||
w = XWINDOW (window);
|
||
f = XFRAME (w->frame);
|
||
face_id = face_at_buffer_position (w, pos, -1, -1, &dummy,
|
||
pos + 100, 0, -1);
|
||
}
|
||
if (! CHAR_VALID_P (c))
|
||
return Qnil;
|
||
if (!FRAME_WINDOW_P (f))
|
||
return Qnil;
|
||
face_id = FACE_FOR_CHAR (f, FACE_FROM_ID (f, face_id), c, pos, Qnil);
|
||
face = FACE_FROM_ID (f, face_id);
|
||
if (face->font)
|
||
{
|
||
unsigned code = face->font->driver->encode_char (face->font, c);
|
||
Lisp_Object font_object;
|
||
|
||
if (code == FONT_INVALID_CODE)
|
||
return Qnil;
|
||
XSETFONT (font_object, face->font);
|
||
return Fcons (font_object, INTEGER_TO_CONS (code));
|
||
}
|
||
return Qnil;
|
||
}
|
||
|
||
|
||
DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0,
|
||
doc: /* Return information about a fontset FONTSET on frame FRAME.
|
||
|
||
FONTSET is a fontset name string, nil for the fontset of FRAME, or t
|
||
for the default fontset. FRAME nil means the selected frame.
|
||
|
||
The value is a char-table whose elements have this form:
|
||
|
||
((FONT OPENED-FONT ...) ...)
|
||
|
||
FONT is a name of font specified for a range of characters.
|
||
|
||
OPENED-FONT is a name of a font actually opened.
|
||
|
||
The char-table has one extra slot. If FONTSET is not the default
|
||
fontset, the value the extra slot is a char-table containing the
|
||
information about the derived fonts from the default fontset. The
|
||
format is the same as above. */)
|
||
(Lisp_Object fontset, Lisp_Object frame)
|
||
{
|
||
Lisp_Object *realized[2], fontsets[2], tables[2];
|
||
Lisp_Object val, elt;
|
||
int c, i, j, k;
|
||
|
||
check_window_system (NULL);
|
||
fontset = check_fontset_name (fontset, &frame);
|
||
|
||
/* Recode fontsets realized on FRAME from the base fontset FONTSET
|
||
in the table `realized'. */
|
||
realized[0] = alloca (word_size * ASIZE (Vfontset_table));
|
||
for (i = j = 0; i < ASIZE (Vfontset_table); i++)
|
||
{
|
||
elt = FONTSET_FROM_ID (i);
|
||
if (!NILP (elt)
|
||
&& EQ (FONTSET_BASE (elt), fontset)
|
||
&& EQ (FONTSET_FRAME (elt), frame))
|
||
realized[0][j++] = elt;
|
||
}
|
||
realized[0][j] = Qnil;
|
||
|
||
realized[1] = alloca (word_size * ASIZE (Vfontset_table));
|
||
for (i = j = 0; ! NILP (realized[0][i]); i++)
|
||
{
|
||
elt = FONTSET_DEFAULT (realized[0][i]);
|
||
if (! NILP (elt))
|
||
realized[1][j++] = elt;
|
||
}
|
||
realized[1][j] = Qnil;
|
||
|
||
tables[0] = Fmake_char_table (Qfontset_info, Qnil);
|
||
fontsets[0] = fontset;
|
||
if (!EQ (fontset, Vdefault_fontset))
|
||
{
|
||
tables[1] = Fmake_char_table (Qnil, Qnil);
|
||
set_char_table_extras (tables[0], 0, tables[1]);
|
||
fontsets[1] = Vdefault_fontset;
|
||
}
|
||
|
||
/* Accumulate information of the fontset in TABLE. The format of
|
||
each element is ((FONT-SPEC OPENED-FONT ...) ...). */
|
||
for (k = 0; k <= 1; k++)
|
||
{
|
||
for (c = 0; c <= MAX_CHAR; )
|
||
{
|
||
int from = c, to = MAX_5_BYTE_CHAR;
|
||
|
||
if (c <= MAX_5_BYTE_CHAR)
|
||
{
|
||
val = char_table_ref_and_range (fontsets[k], c, &from, &to);
|
||
}
|
||
else
|
||
{
|
||
val = FONTSET_FALLBACK (fontsets[k]);
|
||
to = MAX_CHAR;
|
||
}
|
||
if (VECTORP (val))
|
||
{
|
||
Lisp_Object alist;
|
||
|
||
/* At first, set ALIST to ((FONT-SPEC) ...). */
|
||
for (alist = Qnil, i = 0; i < ASIZE (val); i++)
|
||
if (! NILP (AREF (val, i)))
|
||
alist = Fcons (Fcons (FONT_DEF_SPEC (AREF (val, i)), Qnil),
|
||
alist);
|
||
alist = Fnreverse (alist);
|
||
|
||
/* Then store opened font names to cdr of each elements. */
|
||
for (i = 0; ! NILP (realized[k][i]); i++)
|
||
{
|
||
if (c <= MAX_5_BYTE_CHAR)
|
||
val = FONTSET_REF (realized[k][i], c);
|
||
else
|
||
val = FONTSET_FALLBACK (realized[k][i]);
|
||
if (! CONSP (val) || ! VECTORP (XCDR (val)))
|
||
continue;
|
||
/* VAL: (int . [[FACE-ID FONT-DEF FONT-OBJECT int] ... ]) */
|
||
val = XCDR (val);
|
||
for (j = 0; j < ASIZE (val); j++)
|
||
{
|
||
elt = AREF (val, j);
|
||
if (FONT_OBJECT_P (RFONT_DEF_OBJECT (elt)))
|
||
{
|
||
Lisp_Object font_object = RFONT_DEF_OBJECT (elt);
|
||
Lisp_Object slot, name;
|
||
|
||
slot = Fassq (RFONT_DEF_SPEC (elt), alist);
|
||
name = AREF (font_object, FONT_NAME_INDEX);
|
||
if (NILP (Fmember (name, XCDR (slot))))
|
||
nconc2 (slot, list1 (name));
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Store ALIST in TBL for characters C..TO. */
|
||
if (c <= MAX_5_BYTE_CHAR)
|
||
char_table_set_range (tables[k], c, to, alist);
|
||
else
|
||
set_char_table_defalt (tables[k], alist);
|
||
|
||
/* At last, change each elements to font names. */
|
||
for (; CONSP (alist); alist = XCDR (alist))
|
||
{
|
||
elt = XCAR (alist);
|
||
XSETCAR (elt, Ffont_xlfd_name (XCAR (elt), Qnil));
|
||
}
|
||
}
|
||
c = to + 1;
|
||
}
|
||
if (EQ (fontset, Vdefault_fontset))
|
||
break;
|
||
}
|
||
|
||
return tables[0];
|
||
}
|
||
|
||
|
||
DEFUN ("fontset-font", Ffontset_font, Sfontset_font, 2, 3, 0,
|
||
doc: /* Return a font name pattern for character CH in fontset NAME.
|
||
If NAME is t, find a pattern in the default fontset.
|
||
If NAME is nil, find a pattern in the fontset of the selected frame.
|
||
|
||
The value has the form (FAMILY . REGISTRY), where FAMILY is a font
|
||
family name and REGISTRY is a font registry name. This is actually
|
||
the first font name pattern for CH in the fontset or in the default
|
||
fontset.
|
||
|
||
If the 2nd optional arg ALL is non-nil, return a list of all font name
|
||
patterns. */)
|
||
(Lisp_Object name, Lisp_Object ch, Lisp_Object all)
|
||
{
|
||
int c;
|
||
Lisp_Object fontset, elt, list, repertory, val;
|
||
int i, j;
|
||
Lisp_Object frame;
|
||
|
||
frame = Qnil;
|
||
fontset = check_fontset_name (name, &frame);
|
||
|
||
CHECK_CHARACTER (ch);
|
||
c = XINT (ch);
|
||
list = Qnil;
|
||
while (1)
|
||
{
|
||
for (i = 0, elt = FONTSET_REF (fontset, c); i < 2;
|
||
i++, elt = FONTSET_FALLBACK (fontset))
|
||
if (VECTORP (elt))
|
||
for (j = 0; j < ASIZE (elt); j++)
|
||
{
|
||
Lisp_Object family, registry;
|
||
|
||
val = AREF (elt, j);
|
||
if (NILP (val))
|
||
return Qnil;
|
||
repertory = AREF (val, 1);
|
||
if (INTEGERP (repertory))
|
||
{
|
||
struct charset *charset = CHARSET_FROM_ID (XINT (repertory));
|
||
|
||
if (! CHAR_CHARSET_P (c, charset))
|
||
continue;
|
||
}
|
||
else if (CHAR_TABLE_P (repertory))
|
||
{
|
||
if (NILP (CHAR_TABLE_REF (repertory, c)))
|
||
continue;
|
||
}
|
||
val = AREF (val, 0);
|
||
/* VAL is a FONT-SPEC */
|
||
family = AREF (val, FONT_FAMILY_INDEX);
|
||
if (! NILP (family))
|
||
family = SYMBOL_NAME (family);
|
||
registry = AREF (val, FONT_REGISTRY_INDEX);
|
||
if (! NILP (registry))
|
||
registry = SYMBOL_NAME (registry);
|
||
val = Fcons (family, registry);
|
||
if (NILP (all))
|
||
return val;
|
||
list = Fcons (val, list);
|
||
}
|
||
if (EQ (fontset, Vdefault_fontset))
|
||
break;
|
||
fontset = Vdefault_fontset;
|
||
}
|
||
return (Fnreverse (list));
|
||
}
|
||
|
||
DEFUN ("fontset-list", Ffontset_list, Sfontset_list, 0, 0, 0,
|
||
doc: /* Return a list of all defined fontset names. */)
|
||
(void)
|
||
{
|
||
Lisp_Object fontset, list;
|
||
int i;
|
||
|
||
list = Qnil;
|
||
for (i = 0; i < ASIZE (Vfontset_table); i++)
|
||
{
|
||
fontset = FONTSET_FROM_ID (i);
|
||
if (!NILP (fontset)
|
||
&& BASE_FONTSET_P (fontset))
|
||
list = Fcons (FONTSET_NAME (fontset), list);
|
||
}
|
||
|
||
return list;
|
||
}
|
||
|
||
|
||
#ifdef ENABLE_CHECKING
|
||
|
||
Lisp_Object dump_fontset (Lisp_Object) EXTERNALLY_VISIBLE;
|
||
|
||
Lisp_Object
|
||
dump_fontset (Lisp_Object fontset)
|
||
{
|
||
Lisp_Object vec;
|
||
|
||
vec = Fmake_vector (make_number (3), Qnil);
|
||
ASET (vec, 0, FONTSET_ID (fontset));
|
||
|
||
if (BASE_FONTSET_P (fontset))
|
||
{
|
||
ASET (vec, 1, FONTSET_NAME (fontset));
|
||
}
|
||
else
|
||
{
|
||
Lisp_Object frame;
|
||
|
||
frame = FONTSET_FRAME (fontset);
|
||
if (FRAMEP (frame))
|
||
{
|
||
FRAME_PTR f = XFRAME (frame);
|
||
|
||
if (FRAME_LIVE_P (f))
|
||
ASET (vec, 1,
|
||
Fcons (FONTSET_NAME (FONTSET_BASE (fontset)),
|
||
f->name));
|
||
else
|
||
ASET (vec, 1,
|
||
Fcons (FONTSET_NAME (FONTSET_BASE (fontset)), Qnil));
|
||
}
|
||
if (!NILP (FONTSET_DEFAULT (fontset)))
|
||
ASET (vec, 2, FONTSET_ID (FONTSET_DEFAULT (fontset)));
|
||
}
|
||
return vec;
|
||
}
|
||
|
||
DEFUN ("fontset-list-all", Ffontset_list_all, Sfontset_list_all, 0, 0, 0,
|
||
doc: /* Return a brief summary of all fontsets for debug use. */)
|
||
(void)
|
||
{
|
||
Lisp_Object val;
|
||
int i;
|
||
|
||
for (i = 0, val = Qnil; i < ASIZE (Vfontset_table); i++)
|
||
if (! NILP (AREF (Vfontset_table, i)))
|
||
val = Fcons (dump_fontset (AREF (Vfontset_table, i)), val);
|
||
return (Fnreverse (val));
|
||
}
|
||
#endif /* ENABLE_CHECKING */
|
||
|
||
void
|
||
syms_of_fontset (void)
|
||
{
|
||
DEFSYM (Qfontset, "fontset");
|
||
Fput (Qfontset, Qchar_table_extra_slots, make_number (9));
|
||
DEFSYM (Qfontset_info, "fontset-info");
|
||
Fput (Qfontset_info, Qchar_table_extra_slots, make_number (1));
|
||
|
||
DEFSYM (Qprepend, "prepend");
|
||
DEFSYM (Qappend, "append");
|
||
DEFSYM (Qlatin, "latin");
|
||
|
||
Vcached_fontset_data = Qnil;
|
||
staticpro (&Vcached_fontset_data);
|
||
|
||
Vfontset_table = Fmake_vector (make_number (32), Qnil);
|
||
staticpro (&Vfontset_table);
|
||
|
||
Vdefault_fontset = Fmake_char_table (Qfontset, Qnil);
|
||
staticpro (&Vdefault_fontset);
|
||
set_fontset_id (Vdefault_fontset, make_number (0));
|
||
set_fontset_name
|
||
(Vdefault_fontset,
|
||
build_pure_c_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default"));
|
||
ASET (Vfontset_table, 0, Vdefault_fontset);
|
||
next_fontset_id = 1;
|
||
|
||
auto_fontset_alist = Qnil;
|
||
staticpro (&auto_fontset_alist);
|
||
|
||
DEFVAR_LISP ("font-encoding-charset-alist", Vfont_encoding_charset_alist,
|
||
doc: /*
|
||
Alist of charsets vs the charsets to determine the preferred font encoding.
|
||
Each element looks like (CHARSET . ENCODING-CHARSET),
|
||
where ENCODING-CHARSET is a charset registered in the variable
|
||
`font-encoding-alist' as ENCODING.
|
||
|
||
When a text has a property `charset' and the value is CHARSET, a font
|
||
whose encoding corresponds to ENCODING-CHARSET is preferred. */);
|
||
Vfont_encoding_charset_alist = Qnil;
|
||
|
||
DEFVAR_LISP ("use-default-ascent", Vuse_default_ascent,
|
||
doc: /*
|
||
Char table of characters whose ascent values should be ignored.
|
||
If an entry for a character is non-nil, the ascent value of the glyph
|
||
is assumed to be specified by _MULE_DEFAULT_ASCENT property of a font.
|
||
|
||
This affects how a composite character which contains
|
||
such a character is displayed on screen. */);
|
||
Vuse_default_ascent = Qnil;
|
||
|
||
DEFVAR_LISP ("ignore-relative-composition", Vignore_relative_composition,
|
||
doc: /*
|
||
Char table of characters which are not composed relatively.
|
||
If an entry for a character is non-nil, a composition sequence
|
||
which contains that character is displayed so that
|
||
the glyph of that character is put without considering
|
||
an ascent and descent value of a previous character. */);
|
||
Vignore_relative_composition = Qnil;
|
||
|
||
DEFVAR_LISP ("alternate-fontname-alist", Valternate_fontname_alist,
|
||
doc: /* Alist of fontname vs list of the alternate fontnames.
|
||
When a specified font name is not found, the corresponding
|
||
alternate fontnames (if any) are tried instead. */);
|
||
Valternate_fontname_alist = Qnil;
|
||
|
||
DEFVAR_LISP ("fontset-alias-alist", Vfontset_alias_alist,
|
||
doc: /* Alist of fontset names vs the aliases. */);
|
||
Vfontset_alias_alist
|
||
= list1 (Fcons (FONTSET_NAME (Vdefault_fontset),
|
||
build_pure_c_string ("fontset-default")));
|
||
|
||
DEFVAR_LISP ("vertical-centering-font-regexp",
|
||
Vvertical_centering_font_regexp,
|
||
doc: /* Regexp matching font names that require vertical centering on display.
|
||
When a character is displayed with such fonts, the character is displayed
|
||
at the vertical center of lines. */);
|
||
Vvertical_centering_font_regexp = Qnil;
|
||
|
||
DEFVAR_LISP ("otf-script-alist", Votf_script_alist,
|
||
doc: /* Alist of OpenType script tags vs the corresponding script names. */);
|
||
Votf_script_alist = Qnil;
|
||
|
||
defsubr (&Squery_fontset);
|
||
defsubr (&Snew_fontset);
|
||
defsubr (&Sset_fontset_font);
|
||
defsubr (&Sinternal_char_font);
|
||
defsubr (&Sfontset_info);
|
||
defsubr (&Sfontset_font);
|
||
defsubr (&Sfontset_list);
|
||
#ifdef ENABLE_CHECKING
|
||
defsubr (&Sfontset_list_all);
|
||
#endif
|
||
}
|