/* xfont.c -- X core font driver.
- Copyright (C) 2006-2015 Free Software Foundation, Inc.
+ Copyright (C) 2006-2016 Free Software Foundation, Inc.
Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011
National Institute of Advanced Industrial Science and Technology (AIST)
Registration Number H13PRO009
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
#include <X11/Xlib.h>
#include "lisp.h"
-#include "dispextern.h"
#include "xterm.h"
#include "frame.h"
#include "blockinput.h"
#include "character.h"
#include "charset.h"
-#include "fontset.h"
#include "font.h"
-#include "ccl.h"
\f
/* X core font driver. */
struct font_driver xfont_driver =
{
LISP_INITIALLY_ZERO, /* Qx */
- 0, /* case insensitive */
+ false, /* case insensitive */
xfont_get_cache,
xfont_list,
xfont_match,
}
return (i >= 0);
}
- return 0;
+ return false;
}
/* A hash table recoding which font supports which scripts. Each key
indices[i] = names[i];
qsort (indices, num_fonts, sizeof (char *), compare_font_names);
- for (i = 0; i < num_fonts; i++)
- {
- ptrdiff_t len;
+ /* Take one or two passes over the font list. Do the second
+ pass only if we really need it, i.e., only if the first pass
+ found no fonts and skipped some scalable fonts. */
+ bool skipped_some_scalable_fonts = false;
+ for (int i_pass = 0;
+ (i_pass == 0
+ || (i_pass == 1 && NILP (list) && skipped_some_scalable_fonts));
+ i_pass++)
+ for (i = 0; i < num_fonts; i++)
+ {
+ ptrdiff_t len;
+
+ if (i > 0 && xstrcasecmp (indices[i - 1], indices[i]) == 0)
+ continue;
+ if (NILP (entity))
+ entity = font_make_entity ();
+ len = xfont_decode_coding_xlfd (indices[i], -1, buf);
+ if (font_parse_xlfd (buf, len, entity) < 0)
+ continue;
+ ASET (entity, FONT_TYPE_INDEX, Qx);
+ /* Avoid auto-scaled fonts. */
+ if (INTEGERP (AREF (entity, FONT_DPI_INDEX))
+ && INTEGERP (AREF (entity, FONT_AVGWIDTH_INDEX))
+ && XINT (AREF (entity, FONT_DPI_INDEX)) != 0
+ && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) == 0)
+ continue;
+ /* Avoid not-allowed scalable fonts. */
+ if (NILP (Vscalable_fonts_allowed))
+ {
+ int size = 0;
- if (i > 0 && xstrcasecmp (indices[i - 1], indices[i]) == 0)
- continue;
- if (NILP (entity))
- entity = font_make_entity ();
- len = xfont_decode_coding_xlfd (indices[i], -1, buf);
- if (font_parse_xlfd (buf, len, entity) < 0)
- continue;
- ASET (entity, FONT_TYPE_INDEX, Qx);
- /* Avoid auto-scaled fonts. */
- if (INTEGERP (AREF (entity, FONT_DPI_INDEX))
- && INTEGERP (AREF (entity, FONT_AVGWIDTH_INDEX))
- && XINT (AREF (entity, FONT_DPI_INDEX)) != 0
- && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) == 0)
- continue;
- /* Avoid not-allowed scalable fonts. */
- if (NILP (Vscalable_fonts_allowed))
- {
- int size = 0;
+ if (INTEGERP (AREF (entity, FONT_SIZE_INDEX)))
+ size = XINT (AREF (entity, FONT_SIZE_INDEX));
+ else if (FLOATP (AREF (entity, FONT_SIZE_INDEX)))
+ size = XFLOAT_DATA (AREF (entity, FONT_SIZE_INDEX));
+ if (size == 0 && i_pass == 0)
+ {
+ skipped_some_scalable_fonts = true;
+ continue;
+ }
+ }
+ else if (CONSP (Vscalable_fonts_allowed))
+ {
+ Lisp_Object tail;
- if (INTEGERP (AREF (entity, FONT_SIZE_INDEX)))
- size = XINT (AREF (entity, FONT_SIZE_INDEX));
- else if (FLOATP (AREF (entity, FONT_SIZE_INDEX)))
- size = XFLOAT_DATA (AREF (entity, FONT_SIZE_INDEX));
- if (size == 0)
- continue;
- }
- else if (CONSP (Vscalable_fonts_allowed))
- {
- Lisp_Object tail, elt;
-
- for (tail = Vscalable_fonts_allowed; CONSP (tail);
- tail = XCDR (tail))
- {
- elt = XCAR (tail);
- if (STRINGP (elt)
- && fast_c_string_match_ignore_case (elt, indices[i],
- len) >= 0)
- break;
- }
- if (! CONSP (tail))
- continue;
- }
+ for (tail = Vscalable_fonts_allowed; CONSP (tail);
+ tail = XCDR (tail))
+ {
+ Lisp_Object elt = XCAR (tail);
+ if (STRINGP (elt)
+ && (fast_c_string_match_ignore_case (elt, indices[i],
+ len)
+ >= 0))
+ break;
+ }
+ if (! CONSP (tail))
+ continue;
+ }
- /* Avoid fonts of invalid registry. */
- if (NILP (AREF (entity, FONT_REGISTRY_INDEX)))
- continue;
+ /* Avoid fonts of invalid registry. */
+ if (NILP (AREF (entity, FONT_REGISTRY_INDEX)))
+ continue;
- /* Update encoding and repertory if necessary. */
- if (! EQ (registry, AREF (entity, FONT_REGISTRY_INDEX)))
- {
- registry = AREF (entity, FONT_REGISTRY_INDEX);
- if (font_registry_charsets (registry, &encoding, &repertory) < 0)
- encoding = NULL;
- }
- if (! encoding)
- /* Unknown REGISTRY, not supported. */
- continue;
- if (repertory)
- {
- if (NILP (script)
- || xfont_chars_supported (chars, NULL, encoding, repertory))
- list = Fcons (entity, list), entity = Qnil;
+ /* Update encoding and repertory if necessary. */
+ if (! EQ (registry, AREF (entity, FONT_REGISTRY_INDEX)))
+ {
+ registry = AREF (entity, FONT_REGISTRY_INDEX);
+ if (font_registry_charsets (registry, &encoding, &repertory) < 0)
+ encoding = NULL;
+ }
+ if (! encoding)
+ /* Unknown REGISTRY, not supported. */
continue;
- }
- if (memcmp (props, aref_addr (entity, FONT_FOUNDRY_INDEX),
- word_size * 7)
- || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7]))
- {
- vcopy (xfont_scratch_props, 0,
- aref_addr (entity, FONT_FOUNDRY_INDEX), 7);
- ASET (xfont_scratch_props, 7, AREF (entity, FONT_SPACING_INDEX));
- scripts = xfont_supported_scripts (display, indices[i],
- xfont_scratch_props, encoding);
- }
- if (NILP (script)
- || ! NILP (Fmemq (script, scripts)))
- list = Fcons (entity, list), entity = Qnil;
- }
+ if (repertory)
+ {
+ if (NILP (script)
+ || xfont_chars_supported (chars, NULL, encoding, repertory))
+ list = Fcons (entity, list), entity = Qnil;
+ continue;
+ }
+ if (memcmp (props, aref_addr (entity, FONT_FOUNDRY_INDEX),
+ word_size * 7)
+ || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7]))
+ {
+ vcopy (xfont_scratch_props, 0,
+ aref_addr (entity, FONT_FOUNDRY_INDEX), 7);
+ ASET (xfont_scratch_props, 7, AREF (entity, FONT_SPACING_INDEX));
+ scripts = xfont_supported_scripts (display, indices[i],
+ xfont_scratch_props,
+ encoding);
+ }
+ if (NILP (script)
+ || ! NILP (Fmemq (script, scripts)))
+ list = Fcons (entity, list), entity = Qnil;
+ }
XFreeFontNames (names);
}
char **names;
int num_fonts, i;
Lisp_Object list;
- char *last_family IF_LINT (= 0);
+ char *last_family UNINIT;
int last_len;
block_input ();
int i, width = 0;
bool first;
- for (i = 0, first = 1; i < nglyphs; i++)
+ for (i = 0, first = true; i < nglyphs; i++)
{
XChar2b char2b;
static XCharStruct *pcm;
metrics->rbearing = pcm->rbearing;
metrics->ascent = pcm->ascent;
metrics->descent = pcm->descent;
- first = 0;
+ first = false;
}
else
{
syms_of_xfont (void)
{
staticpro (&xfont_scripts_cache);
- { /* Here we rely on the fact that syms_of_xfont (via syms_of_font)
- is called fairly late, when QCtest and Qequal are known to be set. */
- Lisp_Object args[2];
- args[0] = QCtest;
- args[1] = Qequal;
- xfont_scripts_cache = Fmake_hash_table (2, args);
- }
+ xfont_scripts_cache = CALLN (Fmake_hash_table, QCtest, Qequal);
staticpro (&xfont_scratch_props);
xfont_scratch_props = Fmake_vector (make_number (8), Qnil);
xfont_driver.type = Qx;