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xenocara/app/xterm/fontutils.c

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/* $XTermId: fontutils.c,v 1.659 2019/11/13 23:00:11 tom Exp $ */
/*
* Copyright 1998-2018,2019 by Thomas E. Dickey
*
* All Rights Reserved
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name(s) of the above copyright
* holders shall not be used in advertising or otherwise to promote the
* sale, use or other dealings in this Software without prior written
* authorization.
*/
/*
* A portion of this module (for FontNameProperties) was adapted from EMU 1.3;
* it constructs font names with specific properties changed, e.g., for bold
* and double-size characters.
*/
#define RES_OFFSET(field) XtOffsetOf(SubResourceRec, field)
#include <fontutils.h>
#include <X11/Xmu/Drawing.h>
#include <X11/Xmu/CharSet.h>
#include <main.h>
#include <data.h>
#include <menu.h>
#include <xstrings.h>
#include <xterm.h>
#include <stdio.h>
#include <ctype.h>
#define NoFontWarning(data) (data)->warn = fwAlways
#define SetFontWidth(screen,dst,src) (dst)->f_width = (src)
#define SetFontHeight(screen,dst,src) (dst)->f_height = dimRound((screen)->scale_height * (float) (src))
/* from X11/Xlibint.h - not all vendors install this file */
#define CI_NONEXISTCHAR(cs) (((cs)->width == 0) && \
(((cs)->rbearing|(cs)->lbearing| \
(cs)->ascent|(cs)->descent) == 0))
#define CI_GET_CHAR_INFO_1D(fs,col,cs) \
{ \
cs = 0; \
if (col >= fs->min_char_or_byte2 && col <= fs->max_char_or_byte2) { \
if (fs->per_char == NULL) { \
cs = &fs->min_bounds; \
} else { \
cs = &fs->per_char[(col - fs->min_char_or_byte2)]; \
} \
if (CI_NONEXISTCHAR(cs)) cs = 0; \
} \
}
#define CI_GET_CHAR_INFO_2D(fs,row,col,cs) \
{ \
cs = 0; \
if (row >= fs->min_byte1 && row <= fs->max_byte1 && \
col >= fs->min_char_or_byte2 && col <= fs->max_char_or_byte2) { \
if (fs->per_char == NULL) { \
cs = &fs->min_bounds; \
} else { \
cs = &fs->per_char[((row - fs->min_byte1) * \
(fs->max_char_or_byte2 - \
fs->min_char_or_byte2 + 1)) + \
(col - fs->min_char_or_byte2)]; \
} \
if (CI_NONEXISTCHAR(cs)) cs = 0; \
} \
}
#define FREE_FNAME(field) \
if (fonts == 0 || myfonts.field != fonts->field) { \
FREE_STRING(myfonts.field); \
myfonts.field = 0; \
}
/*
* A structure to hold the relevant properties from a font
* we need to make a well formed font name for it.
*/
typedef struct {
/* registry, foundry, family */
const char *beginning;
/* weight */
const char *weight;
/* slant */
const char *slant;
/* wideness */
const char *wideness;
/* add style */
const char *add_style;
int pixel_size;
const char *point_size;
int res_x;
int res_y;
const char *spacing;
int average_width;
/* charset registry, charset encoding */
char *end;
} FontNameProperties;
#if OPT_LOAD_VTFONTS || OPT_WIDE_CHARS
static Boolean merge_sublist(char ***, char **);
#endif
static void save2FontList(XtermWidget, const char *, XtermFontNames *,
VTFontEnum, const char *, Bool);
#if OPT_RENDERFONT
static void fillInFaceSize(XtermWidget, int);
#endif
#if OPT_SHIFT_FONTS
static int lookupOneFontSize(XtermWidget, int);
#endif
#if OPT_TRACE
static void
set_font_height(TScreen *screen, VTwin *win, int height)
{
SetFontHeight(screen, win, height);
TRACE(("SetFontHeight %d\n", win->f_height));
#undef SetFontHeight
#define SetFontHeight(screen, win, height) set_font_height(screen, win, height)
}
static void
set_font_width(TScreen *screen, VTwin *win, int width)
{
(void) screen;
SetFontWidth(screen, win, width);
TRACE(("SetFontWidth %d\n", win->f_width));
#undef SetFontWidth
#define SetFontWidth(screen, win, height) set_font_width(screen, win, height)
}
#endif
#if OPT_REPORT_FONTS || OPT_WIDE_CHARS
static unsigned
countGlyphs(XFontStruct *fp)
{
unsigned count = 0;
if (fp != 0) {
if (fp->min_byte1 == 0 && fp->max_byte1 == 0) {
count = fp->max_char_or_byte2 - fp->min_char_or_byte2 + 1;
} else if (fp->min_char_or_byte2 < 256
&& fp->max_char_or_byte2 < 256) {
unsigned first = (fp->min_byte1 << 8) + fp->min_char_or_byte2;
unsigned last = (fp->max_byte1 << 8) + fp->max_char_or_byte2;
count = last + 1 - first;
}
}
return count;
}
#endif
#if OPT_WIDE_CHARS
/*
* Verify that the wide-bold font is at least a bold font with roughly as many
* glyphs as the wide font. The counts should be the same, but settle for
* filtering out the worst of the font mismatches.
*/
static Bool
compatibleWideCounts(XFontStruct *wfs, XFontStruct *wbfs)
{
unsigned count_w = countGlyphs(wfs);
unsigned count_wb = countGlyphs(wbfs);
if (count_w <= 256 ||
count_wb <= 256 ||
((count_w / 4) * 3) > count_wb) {
TRACE(("...font server lied (count wide %u vs wide-bold %u)\n",
count_w, count_wb));
return False;
}
return True;
}
#endif /* OPT_WIDE_CHARS */
#if OPT_BOX_CHARS
static void
setupPackedFonts(XtermWidget xw)
{
TScreen *screen = TScreenOf(xw);
Bool value = False;
#if OPT_RENDERFONT
if (xw->work.render_font == True) {
int e;
for (e = 0; e < fMAX; ++e) {
XTermXftFonts *data = getMyXftFont(xw, e, screen->menu_font_number);
if (data != 0) {
if (data->map.mixed) {
screen->allow_packing = True;
break;
}
}
}
}
#endif /* OPT_RENDERFONT */
value = screen->allow_packing;
SetItemSensitivity(fontMenuEntries[fontMenu_font_packedfont].widget, value);
}
#endif
typedef struct _nameList {
struct _nameList *next;
char *name;
} NameList;
static NameList *derived_fonts;
static Boolean
is_derived_font_name(const char *name)
{
Boolean result = False;
NameList *list;
if (!IsEmpty(name)) {
for (list = derived_fonts; list != 0; list = list->next) {
if (!x_strcasecmp(name, list->name)) {
result = True;
break;
}
}
}
return result;
}
void
xtermDerivedFont(const char *name)
{
if (!IsEmpty(name) && !is_derived_font_name(name)) {
NameList *list = TypeCalloc(NameList);
list->name = x_strdup(name);
list->next = derived_fonts;
derived_fonts = list;
}
}
/*
* Returns the fields from start to stop in a dash- separated string. This
* function will modify the source, putting '\0's in the appropriate place and
* moving the beginning forward to after the '\0'
*
* This will NOT work for the last field (but we won't need it).
*/
static char *
n_fields(char **source, int start, int stop)
{
int i;
char *str, *str1;
/*
* find the start-1th dash
*/
for (i = start - 1, str = *source; i; i--, str++) {
if ((str = strchr(str, '-')) == 0)
return 0;
}
/*
* find the stopth dash
*/
for (i = stop - start + 1, str1 = str; i; i--, str1++) {
if ((str1 = strchr(str1, '-')) == 0)
return 0;
}
/*
* put a \0 at the end of the fields
*/
*(str1 - 1) = '\0';
/*
* move source forward
*/
*source = str1;
return str;
}
static Boolean
check_fontname(const char *name)
{
Boolean result = True;
if (IsEmpty(name)) {
TRACE(("fontname missing\n"));
result = False;
}
return result;
}
/*
* Gets the font properties from a given font structure. We use the FONT name
* to find them out, since that seems easier.
*
* Returns a pointer to a static FontNameProperties structure
* or NULL on error.
*/
static FontNameProperties *
get_font_name_props(Display *dpy, XFontStruct *fs, char **result)
{
static FontNameProperties props;
static char *last_name;
Atom fontatom;
char *name;
char *str;
if (fs == NULL)
return NULL;
/*
* first get the full font name
*/
name = 0;
fontatom = XInternAtom(dpy, "FONT", False);
if (fontatom != 0) {
XFontProp *fp;
int i;
for (i = 0, fp = fs->properties; i < fs->n_properties; i++, fp++) {
if (fp->name == fontatom) {
name = XGetAtomName(dpy, fp->card32);
break;
}
}
}
if (name == 0)
return 0;
/*
* XGetAtomName allocates memory - don't leak
*/
if (last_name != 0)
XFree(last_name);
last_name = name;
if (result != 0) {
if (!check_fontname(name))
return 0;
if (*result != 0)
free(*result);
*result = x_strdup(name);
}
/*
* Now split it up into parts and put them in
* their places. Since we are using parts of
* the original string, we must not free the Atom Name
*/
/* registry, foundry, family */
if ((props.beginning = n_fields(&name, 1, 3)) == 0)
return 0;
/* weight is the next */
if ((props.weight = n_fields(&name, 1, 1)) == 0)
return 0;
/* slant */
if ((props.slant = n_fields(&name, 1, 1)) == 0)
return 0;
/* width */
if ((props.wideness = n_fields(&name, 1, 1)) == 0)
return 0;
/* add style */
if ((props.add_style = n_fields(&name, 1, 1)) == 0)
return 0;
/* pixel size */
if ((str = n_fields(&name, 1, 1)) == 0)
return 0;
if ((props.pixel_size = atoi(str)) == 0)
return 0;
/* point size */
if ((props.point_size = n_fields(&name, 1, 1)) == 0)
return 0;
/* res_x */
if ((str = n_fields(&name, 1, 1)) == 0)
return 0;
if ((props.res_x = atoi(str)) == 0)
return 0;
/* res_y */
if ((str = n_fields(&name, 1, 1)) == 0)
return 0;
if ((props.res_y = atoi(str)) == 0)
return 0;
/* spacing */
if ((props.spacing = n_fields(&name, 1, 1)) == 0)
return 0;
/* average width */
if ((str = n_fields(&name, 1, 1)) == 0)
return 0;
if ((props.average_width = atoi(str)) == 0)
return 0;
/* the rest: charset registry and charset encoding */
props.end = name;
return &props;
}
#define ALLOCHUNK(n) ((n | 127) + 1)
static void
alloca_fontname(char **result, size_t next)
{
size_t last = (*result != 0) ? strlen(*result) : 0;
size_t have = (*result != 0) ? ALLOCHUNK(last) : 0;
size_t want = last + next + 2;
if (want >= have) {
want = ALLOCHUNK(want);
if (last != 0) {
char *save = *result;
*result = TypeRealloc(char, want, *result);
if (*result == 0)
free(save);
} else {
if ((*result = TypeMallocN(char, want)) != 0)
**result = '\0';
}
}
}
static void
append_fontname_str(char **result, const char *value)
{
if (value == 0)
value = "*";
alloca_fontname(result, strlen(value));
if (*result != 0) {
if (**result != '\0')
strcat(*result, "-");
strcat(*result, value);
}
}
static void
append_fontname_num(char **result, int value)
{
if (value < 0) {
append_fontname_str(result, "*");
} else {
char temp[100];
sprintf(temp, "%d", value);
append_fontname_str(result, temp);
}
}
/*
* Take the given font props and try to make a well formed font name specifying
* the same base font and size and everything, but with different weight/width
* according to the parameters. The return value is allocated, should be freed
* by the caller.
*/
static char *
derive_font_name(FontNameProperties *props,
const char *use_weight,
int use_average_width,
const char *use_encoding)
{
char *result = 0;
append_fontname_str(&result, props->beginning);
append_fontname_str(&result, use_weight);
append_fontname_str(&result, props->slant);
append_fontname_str(&result, 0);
append_fontname_str(&result, 0);
append_fontname_num(&result, props->pixel_size);
append_fontname_str(&result, props->point_size);
append_fontname_num(&result, props->res_x);
append_fontname_num(&result, props->res_y);
append_fontname_str(&result, props->spacing);
append_fontname_num(&result, use_average_width);
append_fontname_str(&result, use_encoding);
xtermDerivedFont(result);
return result;
}
static char *
bold_font_name(FontNameProperties *props, int use_average_width)
{
return derive_font_name(props, "bold", use_average_width, props->end);
}
#if OPT_WIDE_ATTRS
static char *
italic_font_name(FontNameProperties *props, const char *slant)
{
FontNameProperties myprops = *props;
myprops.slant = slant;
return derive_font_name(&myprops, props->weight, myprops.average_width, props->end);
}
static Boolean
open_italic_font(XtermWidget xw, int n, FontNameProperties *fp, XTermFonts * data)
{
static const char *slant[] =
{
"o",
"i"
};
Cardinal pass;
Boolean result = False;
NoFontWarning(data);
for (pass = 0; pass < XtNumber(slant); ++pass) {
char *name;
if ((name = italic_font_name(fp, slant[pass])) != 0) {
TRACE(("open_italic_font %s %s\n",
whichFontEnum((VTFontEnum) n), name));
if (xtermOpenFont(xw, name, data, False)) {
result = (data->fs != 0);
#if OPT_REPORT_FONTS
if (resource.reportFonts) {
printf("opened italic version of %s:\n\t%s\n",
whichFontEnum(n),
name);
}
#endif
}
free(name);
if (result)
break;
}
}
#if OPT_TRACE
if (result) {
XFontStruct *fs = data->fs;
if (fs != 0) {
TRACE(("...actual size %dx%d (ascent %d, descent %d)\n",
fs->ascent +
fs->descent,
fs->max_bounds.width,
fs->ascent,
fs->descent));
}
}
#endif
return result;
}
#endif
#if OPT_WIDE_CHARS
#define derive_wide_font(props, weight) \
derive_font_name(props, weight, props->average_width * 2, "ISO10646-1")
static char *
wide_font_name(FontNameProperties *props)
{
return derive_wide_font(props, "medium");
}
static char *
widebold_font_name(FontNameProperties *props)
{
return derive_wide_font(props, "bold");
}
#endif /* OPT_WIDE_CHARS */
#if OPT_DEC_CHRSET
/*
* Take the given font props and try to make a well formed font name specifying
* the same base font but changed depending on the given attributes and chrset.
*
* For double width fonts, we just double the X-resolution, for double height
* fonts we double the pixel-size and Y-resolution
*/
char *
xtermSpecialFont(XTermDraw * params)
{
TScreen *screen = TScreenOf(params->xw);
#if OPT_TRACE
static char old_spacing[80];
static FontNameProperties old_props;
#endif
FontNameProperties *props;
char *result = 0;
const char *weight;
int pixel_size;
int res_x;
int res_y;
props = get_font_name_props(screen->display,
GetNormalFont(screen, fNorm)->fs, 0);
if (props == 0)
return result;
pixel_size = props->pixel_size;
res_x = props->res_x;
res_y = props->res_y;
if (params->attr_flags & BOLD)
weight = "bold";
else
weight = props->weight;
if (CSET_DOUBLE(params->this_chrset))
res_x *= 2;
if (params->this_chrset == CSET_DHL_TOP
|| params->this_chrset == CSET_DHL_BOT) {
res_y *= 2;
pixel_size *= 2;
}
#if OPT_TRACE
if (old_props.res_x != res_x
|| old_props.res_x != res_y
|| old_props.pixel_size != pixel_size
|| strcmp(old_props.spacing, props->spacing)) {
TRACE(("xtermSpecialFont(atts = %#x, draw = %#x, chrset = %#x)\n",
params->attr_flags, params->draw_flags, params->this_chrset));
TRACE(("res_x = %d\n", res_x));
TRACE(("res_y = %d\n", res_y));
TRACE(("point_size = %s\n", props->point_size));
TRACE(("pixel_size = %d\n", pixel_size));
TRACE(("spacing = %s\n", props->spacing));
old_props.res_x = res_x;
old_props.res_y = res_y;
old_props.pixel_size = pixel_size;
old_props.spacing = old_spacing;
sprintf(old_spacing, "%.*s", (int) sizeof(old_spacing) - 2, props->spacing);
}
#endif
append_fontname_str(&result, props->beginning);
append_fontname_str(&result, weight);
append_fontname_str(&result, props->slant);
append_fontname_str(&result, props->wideness);
append_fontname_str(&result, props->add_style);
append_fontname_num(&result, pixel_size);
append_fontname_str(&result, props->point_size);
append_fontname_num(&result, (params->draw_flags & NORESOLUTION) ? -1 : res_x);
append_fontname_num(&result, (params->draw_flags & NORESOLUTION) ? -1 : res_y);
append_fontname_str(&result, props->spacing);
append_fontname_str(&result, 0);
append_fontname_str(&result, props->end);
xtermDerivedFont(result);
return result;
}
#endif /* OPT_DEC_CHRSET */
/*
* Case-independent comparison for font-names, including wildcards.
* XLFD allows '?' as a wildcard, but we do not handle that (no one seems
* to use it).
*/
static Bool
same_font_name(const char *pattern, const char *match)
{
Bool result = False;
if (pattern && match) {
while (*pattern && *match) {
if (*pattern == *match) {
pattern++;
match++;
} else if (*pattern == '*' || *match == '*') {
if (same_font_name(pattern + 1, match)) {
return True;
} else if (same_font_name(pattern, match + 1)) {
return True;
} else {
return False;
}
} else {
int p = x_toupper(*pattern++);
int m = x_toupper(*match++);
if (p != m)
return False;
}
}
result = (*pattern == *match); /* both should be NUL */
}
return result;
}
/*
* Double-check the fontname that we asked for versus what the font server
* actually gave us. The larger fixed fonts do not always have a matching bold
* font, and the font server may try to scale another font or otherwise
* substitute a mismatched font.
*
* If we cannot get what we requested, we will fallback to the original
* behavior, which simulates bold by overstriking each character at one pixel
* offset.
*/
static int
got_bold_font(Display *dpy, XFontStruct *fs, String requested)
{
char *actual = 0;
int got;
if (get_font_name_props(dpy, fs, &actual) == 0)
got = 0;
else
got = same_font_name(requested, actual);
free(actual);
return got;
}
/*
* Check normal/bold (or wide/wide-bold) font pairs to see if we will be able
* to check for missing glyphs in a comparable manner.
*/
static int
comparable_metrics(XFontStruct *normal, XFontStruct *bold)
{
#define DATA "comparable_metrics: "
int result = 0;
if (normal == 0 || bold == 0) {
;
} else if (normal->all_chars_exist) {
if (bold->all_chars_exist) {
result = 1;
} else {
TRACE((DATA "all chars exist in normal font, but not in bold\n"));
}
} else if (normal->per_char != 0) {
if (bold->per_char != 0) {
result = 1;
} else {
TRACE((DATA "normal font has per-char metrics, but not bold\n"));
}
} else {
TRACE((DATA "normal font is not very good!\n"));
result = 1; /* give in (we're not going in reverse) */
}
return result;
#undef DATA
}
/*
* If the font server tries to adjust another font, it may not adjust it
* properly. Check that the bounding boxes are compatible. Otherwise we'll
* leave trash on the display when we mix normal and bold fonts.
*/
static int
same_font_size(XtermWidget xw, XFontStruct *nfs, XFontStruct *bfs)
{
TScreen *screen = TScreenOf(xw);
int result = 0;
if (nfs != 0 && bfs != 0) {
TRACE(("same_font_size height %d/%d, min %d/%d max %d/%d\n",
nfs->ascent + nfs->descent,
bfs->ascent + bfs->descent,
nfs->min_bounds.width, bfs->min_bounds.width,
nfs->max_bounds.width, bfs->max_bounds.width));
result = screen->free_bold_box
|| ((nfs->ascent + nfs->descent) == (bfs->ascent + bfs->descent)
&& (nfs->min_bounds.width == bfs->min_bounds.width
|| nfs->min_bounds.width == bfs->min_bounds.width + 1)
&& (nfs->max_bounds.width == bfs->max_bounds.width
|| nfs->max_bounds.width == bfs->max_bounds.width + 1));
}
return result;
}
/*
* Check if the font looks like it has fixed width
*/
static int
is_fixed_font(XFontStruct *fs)
{
if (fs)
return (fs->min_bounds.width == fs->max_bounds.width);
return 1;
}
static int
differing_widths(XFontStruct *a, XFontStruct *b)
{
int result = 0;
if (a != NULL && b != NULL && a->max_bounds.width != b->max_bounds.width)
result = 1;
return result;
}
/*
* Check if the font looks like a double width font (i.e. contains
* characters of width X and 2X
*/
#if OPT_WIDE_CHARS
static int
is_double_width_font(XFontStruct *fs)
{
return (fs != NULL && ((2 * fs->min_bounds.width) == fs->max_bounds.width));
}
#else
#define is_double_width_font(fs) 0
#endif
#if OPT_WIDE_CHARS && OPT_RENDERFONT && defined(HAVE_TYPE_FCCHAR32)
#define HALF_WIDTH_TEST_STRING "1234567890"
/* '1234567890' in Chinese characters in UTF-8 */
#define FULL_WIDTH_TEST_STRING "\xe4\xb8\x80\xe4\xba\x8c\xe4\xb8\x89" \
"\xe5\x9b\x9b\xe4\xba\x94" \
"\xef\xa7\x91\xe4\xb8\x83\xe5\x85\xab" \
"\xe4\xb9\x9d\xef\xa6\xb2"
/* '1234567890' in Korean script in UTF-8 */
#define FULL_WIDTH_TEST_STRING2 "\xec\x9d\xbc\xec\x9d\xb4\xec\x82\xbc" \
"\xec\x82\xac\xec\x98\xa4" \
"\xec\x9c\xa1\xec\xb9\xa0\xed\x8c\x94" \
"\xea\xb5\xac\xec\x98\x81"
#define HALF_WIDTH_CHAR1 0x0031 /* '1' */
#define HALF_WIDTH_CHAR2 0x0057 /* 'W' */
#define FULL_WIDTH_CHAR1 0x4E00 /* CJK Ideograph 'number one' */
#define FULL_WIDTH_CHAR2 0xAC00 /* Korean script syllable 'Ka' */
static Bool
is_double_width_font_xft(Display *dpy, XftFont *font)
{
XGlyphInfo gi1, gi2;
FcChar32 c1 = HALF_WIDTH_CHAR1, c2 = HALF_WIDTH_CHAR2;
String fwstr = FULL_WIDTH_TEST_STRING;
String hwstr = HALF_WIDTH_TEST_STRING;
/* Some Korean fonts don't have Chinese characters at all. */
if (!XftCharExists(dpy, font, FULL_WIDTH_CHAR1)) {
if (!XftCharExists(dpy, font, FULL_WIDTH_CHAR2))
return False; /* Not a CJK font */
else /* a Korean font without CJK Ideographs */
fwstr = FULL_WIDTH_TEST_STRING2;
}
XftTextExtents32(dpy, font, &c1, 1, &gi1);
XftTextExtents32(dpy, font, &c2, 1, &gi2);
if (gi1.xOff != gi2.xOff) /* Not a fixed-width font */
return False;
XftTextExtentsUtf8(dpy,
font,
(_Xconst FcChar8 *) hwstr,
(int) strlen(hwstr),
&gi1);
XftTextExtentsUtf8(dpy,
font,
(_Xconst FcChar8 *) fwstr,
(int) strlen(fwstr),
&gi2);
/*
* fontconfig and Xft prior to 2.2(?) set the width of half-width
* characters identical to that of full-width character in CJK double-width
* (bi-width / monospace) font even though the former is half as wide as
* the latter. This was fixed sometime before the release of fontconfig
* 2.2 in early 2003. See
* http://bugzilla.mozilla.org/show_bug.cgi?id=196312
* In the meantime, we have to check both possibilities.
*/
return ((2 * gi1.xOff == gi2.xOff) || (gi1.xOff == gi2.xOff));
}
#else
#define is_double_width_font_xft(dpy, xftfont) 0
#endif
#define EmptyFont(fs) (fs != 0 \
&& ((fs)->ascent + (fs)->descent == 0 \
|| (fs)->max_bounds.width == 0))
#define FontSize(fs) (((fs)->ascent + (fs)->descent) \
* (fs)->max_bounds.width)
const VTFontNames *
xtermFontName(const char *normal)
{
static VTFontNames data;
FREE_STRING(data.f_n);
memset(&data, 0, sizeof(data));
if (normal)
data.f_n = x_strdup(normal);
return &data;
}
const VTFontNames *
defaultVTFontNames(XtermWidget xw)
{
static VTFontNames data;
memset(&data, 0, sizeof(data));
data.f_n = DefaultFontN(xw);
data.f_b = DefaultFontB(xw);
#if OPT_WIDE_CHARS
data.f_w = DefaultFontW(xw);
data.f_wb = DefaultFontWB(xw);
#endif
return &data;
}
static void
cache_menu_font_name(TScreen *screen, int fontnum, int which, const char *name)
{
if (name != 0) {
String last = screen->menu_font_names[fontnum][which];
if (last != 0) {
if (strcmp(last, name)) {
FREE_STRING(last);
TRACE(("caching menu fontname %d.%d %s\n", fontnum, which, name));
screen->menu_font_names[fontnum][which] = x_strdup(name);
}
} else {
TRACE(("caching menu fontname %d.%d %s\n", fontnum, which, name));
screen->menu_font_names[fontnum][which] = x_strdup(name);
}
}
}
static void
cannotFont(XtermWidget xw, const char *who, const char *tag, const char *name)
{
static NameList *reported;
NameList *list;
switch (xw->misc.fontWarnings) {
case fwNever:
return;
case fwResource:
if (is_derived_font_name(name))
return;
break;
case fwAlways:
break;
}
for (list = reported; list != 0; list = list->next) {
if (!x_strcasecmp(name, list->name)) {
return;
}
}
if ((list = TypeMalloc(NameList)) != 0) {
list->name = x_strdup(name);
list->next = reported;
reported = list;
}
xtermWarning("cannot %s%s%s %sfont \"%s\"\n",
who, *tag ? " " : "", tag,
is_derived_font_name(name) ? "derived " : "",
name);
}
/*
* Open the given font and verify that it is non-empty. Return a null on
* failure.
*/
Bool
xtermOpenFont(XtermWidget xw,
const char *name,
XTermFonts * result,
Bool force)
{
Bool code = False;
TScreen *screen = TScreenOf(xw);
TRACE(("xtermOpenFont %d:%d '%s'\n",
result->warn, xw->misc.fontWarnings, NonNull(name)));
if (!IsEmpty(name)) {
if ((result->fs = XLoadQueryFont(screen->display, name)) != 0) {
code = True;
if (EmptyFont(result->fs)) {
xtermCloseFont(xw, result);
code = False;
} else {
result->fn = x_strdup(name);
}
} else if (XmuCompareISOLatin1(name, DEFFONT) != 0) {
if (result->warn <= xw->misc.fontWarnings
#if OPT_RENDERFONT
&& !UsingRenderFont(xw)
#endif
) {
cannotFont(xw, "load", "", name);
} else {
TRACE(("xtermOpenFont: cannot load font '%s'\n", name));
}
if (force) {
NoFontWarning(result);
code = xtermOpenFont(xw, DEFFONT, result, True);
}
}
}
NoFontWarning(result);
return code;
}
/*
* Close the font and free the font info.
*/
void
xtermCloseFont(XtermWidget xw, XTermFonts * fnt)
{
if (fnt != 0 && fnt->fs != 0) {
TScreen *screen = TScreenOf(xw);
clrCgsFonts(xw, WhichVWin(screen), fnt);
XFreeFont(screen->display, fnt->fs);
xtermFreeFontInfo(fnt);
}
}
/*
* Close and free the font (as well as any aliases).
*/
static void
xtermCloseFont2(XtermWidget xw, XTermFonts * fnts, int which)
{
XFontStruct *thisFont = fnts[which].fs;
if (thisFont != 0) {
int k;
xtermCloseFont(xw, &fnts[which]);
for (k = 0; k < fMAX; ++k) {
if (k != which) {
if (thisFont == fnts[k].fs) {
xtermFreeFontInfo(&fnts[k]);
}
}
}
}
}
/*
* Close the listed fonts, noting that some may use copies of the pointer.
*/
void
xtermCloseFonts(XtermWidget xw, XTermFonts * fnts)
{
int j;
for (j = 0; j < fMAX; ++j) {
xtermCloseFont2(xw, fnts, j);
}
}
/*
* Make a copy of the source, assuming the XFontStruct's to be unique, but
* ensuring that the names are reallocated to simplify freeing.
*/
void
xtermCopyFontInfo(XTermFonts * target, XTermFonts * source)
{
xtermFreeFontInfo(target);
target->chrset = source->chrset;
target->flags = source->flags;
target->fn = x_strdup(source->fn);
target->fs = source->fs;
target->warn = source->warn;
}
void
xtermFreeFontInfo(XTermFonts * target)
{
target->chrset = 0;
target->flags = 0;
if (target->fn != 0) {
free(target->fn);
target->fn = 0;
}
target->fs = 0;
}
#if OPT_REPORT_FONTS
static void
reportXCharStruct(const char *tag, XCharStruct * cs)
{
printf("\t\t%s:\n", tag);
printf("\t\t\tlbearing: %d\n", cs->lbearing);
printf("\t\t\trbearing: %d\n", cs->rbearing);
printf("\t\t\twidth: %d\n", cs->width);
printf("\t\t\tascent: %d\n", cs->ascent);
printf("\t\t\tdescent: %d\n", cs->descent);
}
static void
reportOneVTFont(const char *tag,
XTermFonts * fnt)
{
if (!IsEmpty(fnt->fn) && fnt->fs != 0) {
XFontStruct *fs = fnt->fs;
unsigned first_char = 0;
unsigned last_char = 0;
if (fs->max_byte1 == 0) {
first_char = fs->min_char_or_byte2;
last_char = fs->max_char_or_byte2;
} else {
first_char = (fs->min_byte1 * 256) + fs->min_char_or_byte2;
last_char = (fs->max_byte1 * 256) + fs->max_char_or_byte2;
}
printf("\t%s: %s\n", tag, NonNull(fnt->fn));
printf("\t\tall chars: %s\n", fs->all_chars_exist ? "yes" : "no");
printf("\t\tdefault char: %d\n", fs->default_char);
printf("\t\tdirection: %d\n", fs->direction);
printf("\t\tascent: %d\n", fs->ascent);
printf("\t\tdescent: %d\n", fs->descent);
printf("\t\tfirst char: %u\n", first_char);
printf("\t\tlast char: %u\n", last_char);
printf("\t\tmaximum-chars: %u\n", countGlyphs(fs));
if (FontLacksMetrics(fnt)) {
printf("\t\tmissing-chars: ?\n");
printf("\t\tpresent-chars: ?\n");
} else {
unsigned missing = 0;
unsigned ch;
for (ch = first_char; ch <= last_char; ++ch) {
if (xtermMissingChar(ch, fnt)) {
++missing;
}
}
printf("\t\tmissing-chars: %u\n", missing);
printf("\t\tpresent-chars: %u\n", countGlyphs(fs) - missing);
}
printf("\t\tmin_byte1: %d\n", fs->min_byte1);
printf("\t\tmax_byte1: %d\n", fs->max_byte1);
printf("\t\tproperties: %d\n", fs->n_properties);
reportXCharStruct("min_bounds", &(fs->min_bounds));
reportXCharStruct("max_bounds", &(fs->max_bounds));
/* TODO: report fs->properties and fs->per_char */
}
}
static void
reportVTFontInfo(XtermWidget xw, int fontnum)
{
if (resource.reportFonts) {
TScreen *screen = TScreenOf(xw);
if (fontnum) {
printf("Loaded VTFonts(font%d)\n", fontnum);
} else {
printf("Loaded VTFonts(default)\n");
}
reportOneVTFont("fNorm", GetNormalFont(screen, fNorm));
reportOneVTFont("fBold", GetNormalFont(screen, fBold));
#if OPT_WIDE_CHARS
reportOneVTFont("fWide", GetNormalFont(screen, fWide));
reportOneVTFont("fWBold", GetNormalFont(screen, fWBold));
#endif
}
}
#endif
void
xtermUpdateFontGCs(XtermWidget xw, MyGetFont myfunc)
{
TScreen *screen = TScreenOf(xw);
VTwin *win = WhichVWin(screen);
Pixel new_normal = getXtermFG(xw, xw->flags, xw->cur_foreground);
Pixel new_revers = getXtermBG(xw, xw->flags, xw->cur_background);
setCgsFore(xw, win, gcNorm, new_normal);
setCgsBack(xw, win, gcNorm, new_revers);
setCgsFont(xw, win, gcNorm, myfunc(screen, fNorm));
copyCgs(xw, win, gcBold, gcNorm);
setCgsFont2(xw, win, gcBold, myfunc(screen, fBold), fBold);
setCgsFore(xw, win, gcNormReverse, new_revers);
setCgsBack(xw, win, gcNormReverse, new_normal);
setCgsFont(xw, win, gcNormReverse, myfunc(screen, fNorm));
copyCgs(xw, win, gcBoldReverse, gcNormReverse);
setCgsFont2(xw, win, gcBoldReverse, myfunc(screen, fBold), fBold);
if_OPT_WIDE_CHARS(screen, {
XTermFonts *wide_xx = myfunc(screen, fWide);
XTermFonts *bold_xx = myfunc(screen, fWBold);
if (wide_xx->fs != 0
&& bold_xx->fs != 0) {
setCgsFore(xw, win, gcWide, new_normal);
setCgsBack(xw, win, gcWide, new_revers);
setCgsFont(xw, win, gcWide, wide_xx);
copyCgs(xw, win, gcWBold, gcWide);
setCgsFont(xw, win, gcWBold, bold_xx);
setCgsFore(xw, win, gcWideReverse, new_revers);
setCgsBack(xw, win, gcWideReverse, new_normal);
setCgsFont(xw, win, gcWideReverse, wide_xx);
copyCgs(xw, win, gcWBoldReverse, gcWideReverse);
setCgsFont(xw, win, gcWBoldReverse, bold_xx);
}
});
}
#if OPT_WIDE_ATTRS
unsigned
xtermUpdateItalics(XtermWidget xw, unsigned new_attrs, unsigned old_attrs)
{
if ((new_attrs & ATR_ITALIC) && !(old_attrs & ATR_ITALIC)) {
xtermLoadItalics(xw);
xtermUpdateFontGCs(xw, getItalicFont);
} else if (!(new_attrs & ATR_ITALIC) && (old_attrs & ATR_ITALIC)) {
xtermUpdateFontGCs(xw, getNormalFont);
}
return new_attrs;
}
#endif
#if OPT_TRACE
static void
show_font_misses(const char *name, XTermFonts * fp)
{
if (fp->fs != 0) {
if (FontLacksMetrics(fp)) {
TRACE(("%s font lacks metrics\n", name));
} else if (FontIsIncomplete(fp)) {
TRACE(("%s font is incomplete\n", name));
} else {
TRACE(("%s font is complete\n", name));
}
} else {
TRACE(("%s font is missing\n", name));
}
}
#endif
static Bool
loadNormFP(XtermWidget xw,
char **nameOutP,
XTermFonts * infoOut,
int fontnum)
{
Bool status = True;
TRACE(("loadNormFP (%s)\n", NonNull(*nameOutP)));
if (!xtermOpenFont(xw,
*nameOutP,
infoOut,
(fontnum == fontMenu_default))) {
/*
* If we are opening the default font, and it happens to be missing,
* force that to the compiled-in default font, e.g., "fixed". If we
* cannot open the font, disable it from the menu.
*/
if (fontnum != fontMenu_fontsel) {
SetItemSensitivity(fontMenuEntries[fontnum].widget, False);
}
status = False;
}
return status;
}
static Bool
loadBoldFP(XtermWidget xw,
char **nameOutP,
XTermFonts * infoOut,
const char *nameRef,
XTermFonts * infoRef,
int fontnum)
{
TScreen *screen = TScreenOf(xw);
Bool status = True;
TRACE(("loadBoldFP (%s)\n", NonNull(*nameOutP)));
if (!check_fontname(*nameOutP)) {
FontNameProperties *fp;
char *normal = x_strdup(nameRef);
fp = get_font_name_props(screen->display, infoRef->fs, &normal);
if (fp != 0) {
NoFontWarning(infoOut);
*nameOutP = bold_font_name(fp, fp->average_width);
if (!xtermOpenFont(xw, *nameOutP, infoOut, False)) {
free(*nameOutP);
*nameOutP = bold_font_name(fp, -1);
xtermOpenFont(xw, *nameOutP, infoOut, False);
}
TRACE(("...derived bold '%s'\n", NonNull(*nameOutP)));
}
if (fp == 0 || infoOut->fs == 0) {
xtermCopyFontInfo(infoOut, infoRef);
TRACE(("...cannot load a matching bold font\n"));
} else if (comparable_metrics(infoRef->fs, infoOut->fs)
&& same_font_size(xw, infoRef->fs, infoOut->fs)
&& got_bold_font(screen->display, infoOut->fs, *nameOutP)) {
TRACE(("...got a matching bold font\n"));
cache_menu_font_name(screen, fontnum, fBold, *nameOutP);
} else {
xtermCloseFont2(xw, infoOut - fBold, fBold);
*infoOut = *infoRef;
TRACE(("...did not get a matching bold font\n"));
}
free(normal);
} else if (!xtermOpenFont(xw, *nameOutP, infoOut, False)) {
xtermCopyFontInfo(infoOut, infoRef);
TRACE(("...cannot load bold font '%s'\n", NonNull(*nameOutP)));
} else {
cache_menu_font_name(screen, fontnum, fBold, *nameOutP);
}
/*
* Most of the time this call to load the font will succeed, even if
* there is no wide font : the X server doubles the width of the
* normal font, or similar.
*
* But if it did fail for some reason, then nevermind.
*/
if (EmptyFont(infoOut->fs))
status = False; /* can't use a 0-sized font */
if (!same_font_size(xw, infoRef->fs, infoOut->fs)
&& (is_fixed_font(infoRef->fs) && is_fixed_font(infoOut->fs))) {
TRACE(("...ignoring mismatched normal/bold fonts\n"));
xtermCloseFont2(xw, infoOut - fBold, fBold);
xtermCopyFontInfo(infoOut, infoRef);
}
return status;
}
#if OPT_WIDE_CHARS
static Bool
loadWideFP(XtermWidget xw,
char **nameOutP,
XTermFonts * infoOut,
const char *nameRef,
XTermFonts * infoRef,
int fontnum)
{
TScreen *screen = TScreenOf(xw);
Bool status = True;
TRACE(("loadWideFP (%s)\n", NonNull(*nameOutP)));
if (!check_fontname(*nameOutP)
&& (screen->utf8_fonts && !is_double_width_font(infoRef->fs))) {
char *normal = x_strdup(nameRef);
FontNameProperties *fp = get_font_name_props(screen->display,
infoRef->fs, &normal);
if (fp != 0) {
*nameOutP = wide_font_name(fp);
NoFontWarning(infoOut);
}
free(normal);
}
if (check_fontname(*nameOutP)) {
if (xtermOpenFont(xw, *nameOutP, infoOut, False)
&& is_derived_font_name(*nameOutP)
&& EmptyFont(infoOut->fs)) {
xtermCloseFont2(xw, infoOut - fWide, fWide);
}
if (infoOut->fs == 0) {
xtermCopyFontInfo(infoOut, infoRef);
} else {
TRACE(("...%s wide %s\n",
is_derived_font_name(*nameOutP) ? "derived" : "given",
NonNull(*nameOutP)));
cache_menu_font_name(screen, fontnum, fWide, *nameOutP);
}
} else {
xtermCopyFontInfo(infoOut, infoRef);
}
return status;
}
static Bool
loadWBoldFP(XtermWidget xw,
char **nameOutP,
XTermFonts * infoOut,
const char *wideNameRef, XTermFonts * wideInfoRef,
const char *boldNameRef, XTermFonts * boldInfoRef,
int fontnum)
{
TScreen *screen = TScreenOf(xw);
Bool status = True;
char *bold = NULL;
TRACE(("loadWBoldFP (%s)\n", NonNull(*nameOutP)));
if (!check_fontname(*nameOutP)) {
FontNameProperties *fp;
fp = get_font_name_props(screen->display, boldInfoRef->fs, &bold);
if (fp != 0) {
*nameOutP = widebold_font_name(fp);
NoFontWarning(infoOut);
}
}
if (check_fontname(*nameOutP)) {
if (xtermOpenFont(xw, *nameOutP, infoOut, False)
&& is_derived_font_name(*nameOutP)
&& !compatibleWideCounts(wideInfoRef->fs, infoOut->fs)) {
xtermCloseFont2(xw, infoOut - fWBold, fWBold);
}
if (infoOut->fs == 0) {
if (is_derived_font_name(*nameOutP))
free(*nameOutP);
if (IsEmpty(wideNameRef)) {
*nameOutP = x_strdup(boldNameRef);
xtermCopyFontInfo(infoOut, boldInfoRef);
TRACE(("...cannot load wide-bold, use bold %s\n",
NonNull(boldNameRef)));
} else {
*nameOutP = x_strdup(wideNameRef);
xtermCopyFontInfo(infoOut, wideInfoRef);
TRACE(("...cannot load wide-bold, use wide %s\n",
NonNull(wideNameRef)));
}
} else {
TRACE(("...%s wide/bold %s\n",
is_derived_font_name(*nameOutP) ? "derived" : "given",
NonNull(*nameOutP)));
cache_menu_font_name(screen, fontnum, fWBold, *nameOutP);
}
} else if (is_double_width_font(boldInfoRef->fs)) {
xtermCopyFontInfo(infoOut, boldInfoRef);
TRACE(("...bold font is double-width, use it %s\n", NonNull(boldNameRef)));
} else {
xtermCopyFontInfo(infoOut, wideInfoRef);
TRACE(("...cannot load wide bold font, use wide %s\n", NonNull(wideNameRef)));
}
free(bold);
if (EmptyFont(infoOut->fs)) {
status = False; /* can't use a 0-sized font */
} else {
if ((!comparable_metrics(wideInfoRef->fs, infoOut->fs)
|| (!same_font_size(xw, wideInfoRef->fs, infoOut->fs)
&& is_fixed_font(wideInfoRef->fs)
&& is_fixed_font(infoOut->fs)))) {
TRACE(("...ignoring mismatched normal/bold wide fonts\n"));
xtermCloseFont2(xw, infoOut - fWBold, fWBold);
xtermCopyFontInfo(infoOut, wideInfoRef);
}
}
return status;
}
#endif
int
xtermLoadFont(XtermWidget xw,
const VTFontNames * fonts,
Bool doresize,
int fontnum)
{
TScreen *screen = TScreenOf(xw);
VTwin *win = WhichVWin(screen);
VTFontNames myfonts;
XTermFonts fnts[fMAX];
char *tmpname = NULL;
Boolean proportional = False;
memset(&myfonts, 0, sizeof(myfonts));
memset(fnts, 0, sizeof(fnts));
if (fonts != 0)
myfonts = *fonts;
if (!check_fontname(myfonts.f_n))
return 0;
if (fontnum == fontMenu_fontescape
&& myfonts.f_n != screen->MenuFontName(fontnum)) {
if ((tmpname = x_strdup(myfonts.f_n)) == 0)
return 0;
}
TRACE(("Begin Cgs - xtermLoadFont(%s)\n", myfonts.f_n));
releaseWindowGCs(xw, win);
#define DbgResource(name, field, index) \
TRACE(("xtermLoadFont #%d "name" %s%s\n", \
fontnum, \
(fnts[index].warn == fwResource) ? "*" : " ", \
NonNull(myfonts.field)))
DbgResource("normal", f_n, fNorm);
DbgResource("bold ", f_b, fBold);
#if OPT_WIDE_CHARS
DbgResource("wide ", f_w, fWide);
DbgResource("w/bold", f_wb, fWBold);
#endif
if (!loadNormFP(xw,
&myfonts.f_n,
&fnts[fNorm],
fontnum))
goto bad;
if (!loadBoldFP(xw,
&myfonts.f_b,
&fnts[fBold],
myfonts.f_n,
&fnts[fNorm],
fontnum))
goto bad;
/*
* If there is no widefont specified, fake it by doubling AVERAGE_WIDTH
* of normal fonts XLFD, and asking for it. This plucks out 18x18ja
* and 12x13ja as the corresponding fonts for 9x18 and 6x13.
*/
if_OPT_WIDE_CHARS(screen, {
if (!loadWideFP(xw,
&myfonts.f_w,
&fnts[fWide],
myfonts.f_n,
&fnts[fNorm],
fontnum))
goto bad;
if (!loadWBoldFP(xw,
&myfonts.f_wb,
&fnts[fWBold],
myfonts.f_w,
&fnts[fWide],
myfonts.f_b,
&fnts[fBold],
fontnum))
goto bad;
});
/*
* Normal/bold fonts should be the same width. Also, the min/max
* values should be the same.
*/
if (fnts[fNorm].fs != 0
&& fnts[fBold].fs != 0
&& (!is_fixed_font(fnts[fNorm].fs)
|| !is_fixed_font(fnts[fBold].fs)
|| differing_widths(fnts[fNorm].fs, fnts[fBold].fs))) {
TRACE(("Proportional font! normal %d/%d, bold %d/%d\n",
fnts[fNorm].fs->min_bounds.width,
fnts[fNorm].fs->max_bounds.width,
fnts[fBold].fs->min_bounds.width,
fnts[fBold].fs->max_bounds.width));
proportional = True;
}
if_OPT_WIDE_CHARS(screen, {
if (fnts[fWide].fs != 0
&& fnts[fWBold].fs != 0
&& (!is_fixed_font(fnts[fWide].fs)
|| !is_fixed_font(fnts[fWBold].fs)
|| differing_widths(fnts[fWide].fs, fnts[fWBold].fs))) {
TRACE(("Proportional font! wide %d/%d, wide bold %d/%d\n",
fnts[fWide].fs->min_bounds.width,
fnts[fWide].fs->max_bounds.width,
fnts[fWBold].fs->min_bounds.width,
fnts[fWBold].fs->max_bounds.width));
proportional = True;
}
});
/* TODO : enforce that the width of the wide font is 2* the width
of the narrow font */
/*
* If we're switching fonts, free the old ones. Otherwise we'll leak
* the memory that is associated with the old fonts. The
* XLoadQueryFont call allocates a new XFontStruct.
*/
xtermCloseFonts(xw, screen->fnts);
#if OPT_WIDE_ATTRS
xtermCloseFonts(xw, screen->ifnts);
screen->ifnts_ok = False;
#endif
xtermCopyFontInfo(GetNormalFont(screen, fNorm), &fnts[fNorm]);
xtermCopyFontInfo(GetNormalFont(screen, fBold), &fnts[fBold]);
#if OPT_WIDE_CHARS
xtermCopyFontInfo(GetNormalFont(screen, fWide), &fnts[fWide]);
if (fnts[fWBold].fs == NULL)
xtermCopyFontInfo(GetNormalFont(screen, fWide), &fnts[fWide]);
xtermCopyFontInfo(GetNormalFont(screen, fWBold), &fnts[fWBold]);
#endif
xtermUpdateFontGCs(xw, getNormalFont);
#if OPT_BOX_CHARS
screen->allow_packing = proportional;
setupPackedFonts(xw);
#endif
screen->fnt_prop = (Boolean) (proportional && !(screen->force_packed));
screen->fnt_boxes = 1;
#if OPT_BOX_CHARS
/*
* xterm uses character positions 1-31 of a font for the line-drawing
* characters. Check that they are all present. The null character
* (0) is special, and is not used.
*/
#if OPT_RENDERFONT
if (UsingRenderFont(xw)) {
/*
* FIXME: we shouldn't even be here if we're using Xft.
*/
screen->fnt_boxes = 0;
TRACE(("assume Xft missing line-drawing chars\n"));
} else
#endif
{
unsigned ch;
#if OPT_TRACE
#define TRACE_MISS(index) show_font_misses(#index, &fnts[index])
TRACE_MISS(fNorm);
TRACE_MISS(fBold);
#if OPT_WIDE_CHARS
TRACE_MISS(fWide);
TRACE_MISS(fWBold);
#endif
#endif
#if OPT_WIDE_CHARS
if (screen->utf8_mode || screen->unicode_font) {
UIntSet(screen->fnt_boxes, 2);
for (ch = 1; ch < 32; ch++) {
unsigned n = dec2ucs(screen, ch);
if ((n != UCS_REPL)
&& (n != ch)
&& (screen->fnt_boxes & 2)) {
if (xtermMissingChar(n, &fnts[fNorm]) ||
xtermMissingChar(n, &fnts[fBold])) {
UIntClr(screen->fnt_boxes, 2);
TRACE(("missing graphics character #%d, U+%04X\n",
ch, n));
break;
}
}
}
}
#endif
for (ch = 1; ch < 32; ch++) {
if (xtermMissingChar(ch, &fnts[fNorm])) {
TRACE(("missing normal char #%d\n", ch));
UIntClr(screen->fnt_boxes, 1);
break;
}
if (xtermMissingChar(ch, &fnts[fBold])) {
TRACE(("missing bold char #%d\n", ch));
UIntClr(screen->fnt_boxes, 1);
break;
}
}
TRACE(("Will %suse internal line-drawing characters (mode %d)\n",
screen->fnt_boxes ? "not " : "",
screen->fnt_boxes));
}
#endif
if (screen->always_bold_mode) {
screen->enbolden = screen->bold_mode;
} else {
screen->enbolden = screen->bold_mode
&& ((fnts[fNorm].fs == fnts[fBold].fs)
|| same_font_name(myfonts.f_n, myfonts.f_b));
}
TRACE(("Will %suse 1-pixel offset/overstrike to simulate bold\n",
screen->enbolden ? "" : "not "));
set_menu_font(False);
screen->menu_font_number = fontnum;
set_menu_font(True);
if (tmpname) { /* if setting escape or sel */
if (screen->MenuFontName(fontnum))
FREE_STRING(screen->MenuFontName(fontnum));
screen->MenuFontName(fontnum) = tmpname;
if (fontnum == fontMenu_fontescape) {
update_font_escape();
}
#if OPT_SHIFT_FONTS
screen->menu_font_sizes[fontnum] = FontSize(fnts[fNorm].fs);
#endif
}
set_cursor_gcs(xw);
xtermUpdateFontInfo(xw, doresize);
TRACE(("Success Cgs - xtermLoadFont\n"));
#if OPT_REPORT_FONTS
reportVTFontInfo(xw, fontnum);
#endif
FREE_FNAME(f_n);
FREE_FNAME(f_b);
#if OPT_WIDE_CHARS
FREE_FNAME(f_w);
FREE_FNAME(f_wb);
#endif
if (fnts[fNorm].fn == fnts[fBold].fn) {
free(fnts[fNorm].fn);
} else {
free(fnts[fNorm].fn);
free(fnts[fBold].fn);
}
#if OPT_WIDE_CHARS
free(fnts[fWide].fn);
free(fnts[fWBold].fn);
#endif
xtermSetWinSize(xw);
return 1;
bad:
if (tmpname)
free(tmpname);
#if OPT_RENDERFONT
if ((fontnum == fontMenu_fontsel) && (fontnum != screen->menu_font_number)) {
int old_fontnum = screen->menu_font_number;
#if OPT_TOOLBAR
SetItemSensitivity(fontMenuEntries[fontnum].widget, True);
#endif
Bell(xw, XkbBI_MinorError, 0);
myfonts.f_n = screen->MenuFontName(old_fontnum);
return xtermLoadFont(xw, &myfonts, doresize, old_fontnum);
} else if (x_strcasecmp(myfonts.f_n, DEFFONT)) {
int code;
myfonts.f_n = x_strdup(DEFFONT);
TRACE(("...recovering for TrueType fonts\n"));
code = xtermLoadFont(xw, &myfonts, doresize, fontnum);
if (code) {
if (fontnum != fontMenu_fontsel) {
SetItemSensitivity(fontMenuEntries[fontnum].widget,
UsingRenderFont(xw));
}
TRACE(("...recovered size %dx%d\n",
FontHeight(screen),
FontWidth(screen)));
}
return code;
}
#endif
releaseWindowGCs(xw, win);
xtermCloseFonts(xw, fnts);
TRACE(("Fail Cgs - xtermLoadFont\n"));
return 0;
}
#if OPT_WIDE_ATTRS
/*
* (Attempt to) load matching italics for the current normal/bold/etc fonts.
* If the attempt fails for a given style, use the non-italic font.
*/
void
xtermLoadItalics(XtermWidget xw)
{
TScreen *screen = TScreenOf(xw);
if (!screen->ifnts_ok) {
int n;
FontNameProperties *fp;
XTermFonts *data;
screen->ifnts_ok = True;
for (n = 0; n < fMAX; ++n) {
switch (n) {
case fNorm:
/* FALLTHRU */
case fBold:
/* FALLTHRU */
#if OPT_WIDE_CHARS
case fWide:
/* FALLTHRU */
case fWBold:
#endif
/* FALLTHRU */
data = getItalicFont(screen, n);
/*
* FIXME - need to handle font-leaks
*/
data->fs = 0;
if (getNormalFont(screen, n)->fs != 0 &&
(fp = get_font_name_props(screen->display,
getNormalFont(screen, n)->fs,
0)) != 0) {
if (!open_italic_font(xw, n, fp, data)) {
if (n > 0) {
xtermCopyFontInfo(data,
getItalicFont(screen, n - 1));
} else {
xtermOpenFont(xw,
getNormalFont(screen, n)->fn,
data, False);
}
}
}
break;
}
}
}
}
#endif
#if OPT_LOAD_VTFONTS || OPT_WIDE_CHARS
/*
* Collect font-names that we can modify with the load-vt-fonts() action.
*/
#define MERGE_SUBFONT(dst,src,name) \
if (IsEmpty(dst.name)) { \
TRACE(("MERGE_SUBFONT " #dst "." #name " merge \"%s\"\n", NonNull(src.name))); \
dst.name = x_strdup(src.name); \
} else { \
TRACE(("MERGE_SUBFONT " #dst "." #name " found \"%s\"\n", NonNull(dst.name))); \
}
#define MERGE_SUBLIST(dst,src,name) \
if (merge_sublist(&(dst.fonts.x11.name), src.fonts.x11.name)) { \
TRACE(("MERGE_SUBLIST " #dst "." #name " merge \"%s\"\n", src.fonts.x11.name[0])); \
} else { \
TRACE(("MERGE_SUBLIST " #dst "." #name " found \"%s\"\n", dst.fonts.x11.name[0])); \
}
#define INFER_SUBFONT(dst,src,name) \
if (IsEmpty(dst.name)) { \
TRACE(("INFER_SUBFONT " #dst "." #name " will infer\n")); \
dst.name = x_strdup(""); \
} else { \
TRACE(("INFER_SUBFONT " #dst "." #name " found \"%s\"\n", NonNull(dst.name))); \
}
#define FREE_MENU_FONTS(dst) \
TRACE(("FREE_MENU_FONTS " #dst "\n")); \
for (n = fontMenu_default; n <= fontMenu_lastBuiltin; ++n) { \
for (m = 0; m < fMAX; ++m) { \
FREE_STRING(dst.menu_font_names[n][m]); \
dst.menu_font_names[n][m] = 0; \
} \
}
#define COPY_MENU_FONTS(dst,src) \
TRACE(("COPY_MENU_FONTS " #src " to " #dst "\n")); \
for (n = fontMenu_default; n <= fontMenu_lastBuiltin; ++n) { \
for (m = 0; m < fMAX; ++m) { \
FREE_STRING(dst.menu_font_names[n][m]); \
dst.menu_font_names[n][m] = x_strdup(src.menu_font_names[n][m]); \
} \
TRACE((".. " #dst ".menu_fonts_names[%d] = %s\n", n, NonNull(dst.menu_font_names[n][fNorm]))); \
}
#define COPY_DEFAULT_FONTS(target, source) \
TRACE(("COPY_DEFAULT_FONTS " #source " to " #target "\n")); \
xtermCopyVTFontNames(&target.default_font, &source.default_font)
#define COPY_X11_FONTLISTS(target, source) \
TRACE(("COPY_X11_FONTLISTS " #source " to " #target "\n")); \
xtermCopyFontLists(xw, &target.fonts.x11, &source.fonts.x11)
static void
xtermCopyVTFontNames(VTFontNames * target, VTFontNames * source)
{
#define COPY_IT(name,field) \
TRACE((".. "#name" = %s\n", NonNull(source->field))); \
free(target->field); \
target->field = x_strdup(source->field)
TRACE(("xtermCopyVTFontNames\n"));
COPY_IT(font, f_n);
COPY_IT(boldFont, f_b);
#if OPT_WIDE_CHARS
COPY_IT(wideFont, f_w);
COPY_IT(wideBoldFont, f_wb);
#endif
#undef COPY_IT
}
static void
xtermCopyFontLists(XtermWidget xw, VTFontList * target, VTFontList * source)
{
#define COPY_IT(name,field) \
copyFontList(&(target->field), source->field); \
TRACE_ARGV(".. " #name, source->field)
(void) xw;
TRACE(("xtermCopyFontLists %s ->%s\n",
whichFontList(xw, source),
whichFontList(xw, target)));
COPY_IT(font, list_n);
COPY_IT(fontBold, list_b);
#if OPT_WIDE_ATTRS || OPT_RENDERWIDE
COPY_IT(fontItal, list_i);
COPY_IT(fontBtal, list_bi);
#endif
#if OPT_WIDE_CHARS
COPY_IT(wideFont, list_w);
COPY_IT(wideBoldFont, list_wb);
COPY_IT(wideItalFont, list_wi);
COPY_IT(wideBtalFont, list_wbi);
#endif
#undef COPY_IT
}
void
xtermSaveVTFonts(XtermWidget xw)
{
TScreen *screen = TScreenOf(xw);
Cardinal n, m;
if (!screen->savedVTFonts) {
screen->savedVTFonts = True;
TRACE(("xtermSaveVTFonts saving original\n"));
COPY_DEFAULT_FONTS(screen->cacheVTFonts, xw->misc);
COPY_X11_FONTLISTS(screen->cacheVTFonts, xw->work);
COPY_MENU_FONTS(screen->cacheVTFonts, xw->screen);
}
}
#define SAME_STRING(x,y) ((x) == (y) || ((x) && (y) && !strcmp(x, y)))
#define SAME_MEMBER(n) SAME_STRING(a->n, b->n)
static Boolean
sameSubResources(SubResourceRec * a, SubResourceRec * b)
{
Boolean result = True;
if (!SAME_MEMBER(default_font.f_n)
|| !SAME_MEMBER(default_font.f_b)
#if OPT_WIDE_CHARS
|| !SAME_MEMBER(default_font.f_w)
|| !SAME_MEMBER(default_font.f_wb)
#endif
) {
TRACE(("sameSubResources: default_font differs\n"));
result = False;
} else {
int n;
for (n = 0; n < NMENUFONTS; ++n) {
if (!SAME_MEMBER(menu_font_names[n][fNorm])) {
TRACE(("sameSubResources: menu_font_names[%d] differs\n", n));
result = False;
break;
}
}
}
return result;
}
/*
* Load the "VT" font names from the given subresource name/class. These
* correspond to the VT100 resources.
*/
static Bool
xtermLoadVTFonts(XtermWidget xw, String myName, String myClass)
{
SubResourceRec subresourceRec;
SubResourceRec referenceRec;
/*
* These are duplicates of the VT100 font resources, but with a special
* application/classname passed in to distinguish them.
*/
static XtResource font_resources[] =
{
Sres(XtNfont, XtCFont, default_font.f_n, DEFFONT),
Sres(XtNboldFont, XtCBoldFont, default_font.f_b, DEFBOLDFONT),
#if OPT_WIDE_CHARS
Sres(XtNwideFont, XtCWideFont, default_font.f_w, DEFWIDEFONT),
Sres(XtNwideBoldFont, XtCWideBoldFont, default_font.f_wb, DEFWIDEBOLDFONT),
#endif
Sres(XtNfont1, XtCFont1, MenuFontName(fontMenu_font1), NULL),
Sres(XtNfont2, XtCFont2, MenuFontName(fontMenu_font2), NULL),
Sres(XtNfont3, XtCFont3, MenuFontName(fontMenu_font3), NULL),
Sres(XtNfont4, XtCFont4, MenuFontName(fontMenu_font4), NULL),
Sres(XtNfont5, XtCFont5, MenuFontName(fontMenu_font5), NULL),
Sres(XtNfont6, XtCFont6, MenuFontName(fontMenu_font6), NULL),
};
Cardinal n, m;
Bool status = True;
TScreen *screen = TScreenOf(xw);
TRACE(("called xtermLoadVTFonts(name=%s, class=%s)\n",
NonNull(myName), NonNull(myClass)));
xtermSaveVTFonts(xw);
if (IsEmpty(myName)) {
TRACE(("xtermLoadVTFonts restoring original\n"));
COPY_DEFAULT_FONTS(xw->misc, screen->cacheVTFonts);
COPY_X11_FONTLISTS(xw->work, screen->cacheVTFonts);
FREE_MENU_FONTS(xw->screen);
COPY_MENU_FONTS(xw->screen, screen->cacheVTFonts);
} else {
TRACE(("xtermLoadVTFonts(%s, %s)\n", myName, myClass));
memset(&referenceRec, 0, sizeof(referenceRec));
memset(&subresourceRec, 0, sizeof(subresourceRec));
XtGetSubresources((Widget) xw, (XtPointer) &subresourceRec,
myName, myClass,
font_resources,
(Cardinal) XtNumber(font_resources),
NULL, (Cardinal) 0);
/*
* XtGetSubresources returns no status, so we compare the returned
* data against a zero'd struct to see if any data is returned.
*/
if (memcmp(&referenceRec, &subresourceRec, sizeof(referenceRec))
&& !sameSubResources(&(screen->cacheVTFonts), &subresourceRec)) {
screen->mergedVTFonts = True;
/*
* To make it simple, reallocate the strings returned by
* XtGetSubresources. We can free our own strings, but not theirs.
*/
ALLOC_STRING(subresourceRec.default_font.f_n);
ALLOC_STRING(subresourceRec.default_font.f_b);
#if OPT_WIDE_CHARS
ALLOC_STRING(subresourceRec.default_font.f_w);
ALLOC_STRING(subresourceRec.default_font.f_wb);
#endif
for (n = fontMenu_font1; n <= fontMenu_lastBuiltin; ++n) {
ALLOC_STRING(subresourceRec.MenuFontName(n));
}
/*
* Now, save the string to a font-list for consistency
*/
#define ALLOC_SUBLIST(which,field) \
save2FontList(xw, "cached", \
&(subresourceRec.fonts), \
which, \
subresourceRec.default_font.field, False)
ALLOC_SUBLIST(fNorm, f_n);
ALLOC_SUBLIST(fBold, f_b);
#if OPT_WIDE_CHARS
ALLOC_SUBLIST(fWide, f_w);
ALLOC_SUBLIST(fWBold, f_wb);
#endif
/*
* If a particular resource value was not found, use the original.
*/
MERGE_SUBFONT(subresourceRec, xw->misc, default_font.f_n);
INFER_SUBFONT(subresourceRec, xw->misc, default_font.f_b);
MERGE_SUBLIST(subresourceRec, xw->work, list_n);
MERGE_SUBLIST(subresourceRec, xw->work, list_b);
#if OPT_WIDE_CHARS
INFER_SUBFONT(subresourceRec, xw->misc, default_font.f_w);
INFER_SUBFONT(subresourceRec, xw->misc, default_font.f_wb);
MERGE_SUBLIST(subresourceRec, xw->work, list_w);
MERGE_SUBLIST(subresourceRec, xw->work, list_wb);
#endif
for (n = fontMenu_font1; n <= fontMenu_lastBuiltin; ++n) {
MERGE_SUBFONT(subresourceRec, xw->screen, MenuFontName(n));
}
/*
* Finally, copy the subresource data to the widget.
*/
COPY_DEFAULT_FONTS(xw->misc, subresourceRec);
COPY_X11_FONTLISTS(xw->work, subresourceRec);
FREE_MENU_FONTS(xw->screen);
COPY_MENU_FONTS(xw->screen, subresourceRec);
FREE_STRING(screen->MenuFontName(fontMenu_default));
FREE_STRING(screen->menu_font_names[0][fBold]);
screen->MenuFontName(fontMenu_default) = x_strdup(DefaultFontN(xw));
screen->menu_font_names[0][fBold] = x_strdup(DefaultFontB(xw));
#if OPT_WIDE_CHARS
FREE_STRING(screen->menu_font_names[0][fWide]);
FREE_STRING(screen->menu_font_names[0][fWBold]);
screen->menu_font_names[0][fWide] = x_strdup(DefaultFontW(xw));
screen->menu_font_names[0][fWBold] = x_strdup(DefaultFontWB(xw));
#endif
/*
* And remove our copies of strings.
*/
FREE_STRING(subresourceRec.default_font.f_n);
FREE_STRING(subresourceRec.default_font.f_b);
#if OPT_WIDE_CHARS
FREE_STRING(subresourceRec.default_font.f_w);
FREE_STRING(subresourceRec.default_font.f_wb);
#endif
for (n = fontMenu_font1; n <= fontMenu_lastBuiltin; ++n) {
FREE_STRING(subresourceRec.MenuFontName(n));
}
} else {
TRACE(("...no resources found\n"));
status = False;
}
}
TRACE((".. xtermLoadVTFonts: %d\n", status));
return status;
}
#if OPT_WIDE_CHARS
static Bool
isWideFont(XFontStruct *fp, const char *tag, Bool nullOk)
{
Bool result = False;
(void) tag;
if (okFont(fp)) {
unsigned count = countGlyphs(fp);
TRACE(("isWideFont(%s) found %d cells\n", tag, count));
result = (count > 256) ? True : False;
} else {
result = nullOk;
}
return result;
}
/*
* If the current fonts are not wide, load the UTF8 fonts.
*
* Called during initialization (for wide-character mode), the fonts have not
* been setup, so we pass nullOk=True to isWideFont().
*
* Called after initialization, e.g., in response to the UTF-8 menu entry
* (starting from narrow character mode), it checks if the fonts are not wide.
*/
Bool
xtermLoadWideFonts(XtermWidget xw, Bool nullOk)
{
TScreen *screen = TScreenOf(xw);
Bool result;
if (EmptyFont(GetNormalFont(screen, fWide)->fs)) {
result = (isWideFont(GetNormalFont(screen, fNorm)->fs, "normal", nullOk)
&& isWideFont(GetNormalFont(screen, fBold)->fs, "bold", nullOk));
} else {
result = (isWideFont(GetNormalFont(screen, fWide)->fs, "wide", nullOk)
&& isWideFont(GetNormalFont(screen, fWBold)->fs,
"wide-bold", nullOk));
if (result && !screen->utf8_latin1) {
result = (isWideFont(GetNormalFont(screen, fNorm)->fs, "normal", nullOk)
&& isWideFont(GetNormalFont(screen, fBold)->fs,
"bold", nullOk));
}
}
if (!result) {
TRACE(("current fonts are not all wide%s\n", nullOk ? " nullOk" : ""));
result = xtermLoadVTFonts(xw, XtNutf8Fonts, XtCUtf8Fonts);
}
TRACE(("xtermLoadWideFonts:%d\n", result));
return result;
}
#endif /* OPT_WIDE_CHARS */
/*
* Restore the default fonts, i.e., if we had switched to wide-fonts.
*/
Bool
xtermLoadDefaultFonts(XtermWidget xw)
{
Bool result;
result = xtermLoadVTFonts(xw, NULL, NULL);
TRACE(("xtermLoadDefaultFonts:%d\n", result));
return result;
}
#endif /* OPT_LOAD_VTFONTS || OPT_WIDE_CHARS */
#if OPT_LOAD_VTFONTS
void
HandleLoadVTFonts(Widget w,
XEvent *event GCC_UNUSED,
String *params GCC_UNUSED,
Cardinal *param_count GCC_UNUSED)
{
XtermWidget xw;
if ((xw = getXtermWidget(w)) != 0) {
static char empty[] = ""; /* appease strict compilers */
TScreen *screen = TScreenOf(xw);
char name_buf[80];
String name = (String) ((*param_count > 0) ? params[0] : empty);
char *myName = MyStackAlloc(strlen(name) + 1, name_buf);
TRACE(("HandleLoadVTFonts(%d)\n", *param_count));
if (myName != 0) {
char class_buf[80];
String convert = (String) ((*param_count > 1) ? params[1] : myName);
char *myClass = MyStackAlloc(strlen(convert) + 1, class_buf);
strcpy(myName, name);
if (myClass != 0) {
strcpy(myClass, convert);
if (*param_count == 1)
myClass[0] = x_toupper(myClass[0]);
if (xtermLoadVTFonts(xw, myName, myClass)) {
int n;
/*
* When switching fonts, try to preserve the font-menu
* selection, since it is less surprising to do that (if
* the font-switching can be undone) than to switch to
* "Default".
*/
int font_number = screen->menu_font_number;
if (font_number > fontMenu_lastBuiltin)
font_number = fontMenu_lastBuiltin;
for (n = 0; n < NMENUFONTS; ++n) {
screen->menu_font_sizes[n] = 0;
}
if (font_number == fontMenu_default) {
SetVTFont(xw, font_number, True, defaultVTFontNames(xw));
} else {
SetVTFont(xw, font_number, True, NULL);
}
}
MyStackFree(myClass, class_buf);
}
MyStackFree(myName, name_buf);
}
}
}
#endif /* OPT_LOAD_VTFONTS */
/*
* Set the limits for the box that outlines the cursor.
*/
void
xtermSetCursorBox(TScreen *screen)
{
static XPoint VTbox[NBOX];
XPoint *vp;
int fw = FontWidth(screen) - 1;
int fh = FontHeight(screen) - 1;
int ww = isCursorBar(screen) ? 1 : fw;
int hh = isCursorUnderline(screen) ? 1 : fh;
vp = &VTbox[1];
(vp++)->x = (short) ww;
(vp++)->y = (short) hh;
(vp++)->x = (short) -ww;
vp->y = (short) -hh;
screen->box = VTbox;
}
#if OPT_RENDERFONT
#define CACHE_XFT(dst,src) if (src.font != 0) {\
int err = checkXft(xw, &(dst[fontnum]), &src);\
TRACE(("Xft metrics %s[%d] = %d (%d,%d)%s advance %d, actual %d%s%s\n",\
#dst,\
fontnum,\
src.font->height,\
src.font->ascent,\
src.font->descent,\
((src.font->ascent + src.font->descent) > src.font->height ? "*" : ""),\
src.font->max_advance_width,\
dst[fontnum].map.min_width,\
dst[fontnum].map.mixed ? " mixed" : "",\
err ? " ERROR" : ""));\
if (err) {\
xtermCloseXft(screen, &src);\
memset((&dst[fontnum]), 0, sizeof(dst[fontnum]));\
failed += err;\
}\
}
#if OPT_REPORT_FONTS
static FcChar32
xtermXftFirstChar(XftFont *xft)
{
FcChar32 map[FC_CHARSET_MAP_SIZE];
FcChar32 next;
FcChar32 first;
int i;
first = FcCharSetFirstPage(xft->charset, map, &next);
for (i = 0; i < FC_CHARSET_MAP_SIZE; i++) {
if (map[i]) {
FcChar32 bits = map[i];
first += (FcChar32) i *32;
while (!(bits & 0x1)) {
bits >>= 1;
first++;
}
break;
}
}
return first;
}
static FcChar32
xtermXftLastChar(XftFont *xft)
{
FcChar32 this, last, next;
FcChar32 map[FC_CHARSET_MAP_SIZE];
int i;
last = FcCharSetFirstPage(xft->charset, map, &next);
while ((this = FcCharSetNextPage(xft->charset, map, &next)) != FC_CHARSET_DONE)
last = this;
last &= (FcChar32) ~ 0xff;
for (i = FC_CHARSET_MAP_SIZE - 1; i >= 0; i--) {
if (map[i]) {
FcChar32 bits = map[i];
last += (FcChar32) i *32 + 31;
while (!(bits & 0x80000000)) {
last--;
bits <<= 1;
}
break;
}
}
return (FcChar32) last;
}
#endif /* OPT_REPORT_FONTS */
#if OPT_TRACE > 1
static void
dumpXft(XtermWidget xw, XTermXftFonts *data)
{
XftFont *xft = data->font;
TScreen *screen = TScreenOf(xw);
VTwin *win = WhichVWin(screen);
FcChar32 c;
FcChar32 first = xtermXftFirstChar(xft);
FcChar32 last = xtermXftLastChar(xft);
unsigned count = 0;
unsigned outside = 0;
TRACE(("dumpXft {{\n"));
TRACE((" data range %#6x..%#6x\n", first, last));
for (c = first; c <= last; ++c) {
if (FcCharSetHasChar(xft->charset, c)) {
int width = CharWidth(c);
XGlyphInfo extents;
XftTextExtents32(XtDisplay(xw), xft, &c, 1, &extents);
TRACE(("%#6x %2d %.1f\n", c, width,
((double) extents.width) / win->f_width));
if (extents.width > win->f_width)
++outside;
++count;
}
}
TRACE(("}} %u total, %u outside\n", count, outside));
}
#define DUMP_XFT(xw, data) dumpXft(xw, data)
#else
#define DUMP_XFT(xw, data) /* nothing */
#endif
/*
* Check if this is a FC_COLOR font, which fontconfig misrepresents to "fix" a
* problem with web browsers. As of 2018/12 (4 years later), Xft does not work
* with that. Even with this workaround, fontconfig has at least one bug which
* causes it to crash (Debian #917034).
*/
#ifdef FC_COLOR
#define GetFcBool(pattern, what) \
(FcPatternGetBool(pattern, what, 0, &fcbogus) == FcResultMatch)
static Boolean
isBogusXft(XftFont *font)
{
Boolean result = False;
if (font != 0) {
FcBool fcbogus;
if (GetFcBool(font->pattern, FC_COLOR) && fcbogus) {
TRACE(("...matched color-bitmap font\n"));
result = True;
} else if (GetFcBool(font->pattern, FC_OUTLINE) && !fcbogus) {
TRACE(("...matched non-outline font\n"));
/* This is legal for regular bitmap fonts - fontconfig attempts to
* find a match - but problematic for misencoded color-bitmap fonts.
*/
}
}
return result;
}
#endif
static int
checkXft(XtermWidget xw, XTermXftFonts *target, XTermXftFonts *source)
{
FcChar32 c;
Dimension width = 0;
int failed = 0;
target->font = source->font;
target->pattern = source->pattern;
target->map.min_width = 0;
target->map.max_width = (Dimension) source->font->max_advance_width;
/*
* For each ASCII or ISO-8859-1 printable code, ask what its width is.
* Given the maximum width for those, we have a reasonable estimate of
* the single-column width.
*
* Ignore control characters - their extent information is misleading.
*/
for (c = 32; c < 255; ++c) {
if (c >= 127 && c <= 159)
continue;
if (FcCharSetHasChar(source->font->charset, c)) {
XGlyphInfo extents;
XftTextExtents32(XtDisplay(xw), source->font, &c, 1, &extents);
if (width >= extents.width)
continue;
if (extents.width >= (3 * target->map.max_width)) {
width = 0; /* metrics are bogus - give up */
break;
}
if (extents.width > target->map.max_width)
continue;
width = extents.width;
}
}
/*
* Sometimes someone uses a symbol font which has no useful ASCII or
* Latin-1 characters. Allow that, in case they did it intentionally.
*/
if (width == 0) {
failed = 1;
if (xtermXftLastChar(source->font) >= 256) {
width = target->map.max_width;
}
}
target->map.min_width = width;
target->map.mixed = (target->map.max_width >= (target->map.min_width + 1));
return failed;
}
#if OPT_REPORT_FONTS
static void
reportXftFonts(XtermWidget xw,
XftFont *fp,
const char *name,
const char *tag,
XftPattern *match)
{
if (resource.reportFonts) {
char buffer[1024];
FcChar32 first_char = xtermXftFirstChar(fp);
FcChar32 last_char = xtermXftLastChar(fp);
FcChar32 ch;
unsigned missing = 0;
printf("Loaded XftFonts(%s[%s])\n", name, tag);
for (ch = first_char; ch <= last_char; ++ch) {
if (xtermXftMissing(xw, fp, ch)) {
++missing;
}
}
printf("\t\tfirst char: %u\n", first_char);
printf("\t\tlast char: %u\n", last_char);
printf("\t\tmissing-chars: %u\n", missing);
printf("\t\tpresent-chars: %u\n", (last_char - first_char) + 1 - missing);
if (XftNameUnparse(match, buffer, (int) sizeof(buffer))) {
char *target;
char *source = buffer;
while ((target = strtok(source, ":")) != 0) {
printf("\t%s\n", target);
source = 0;
}
}
fflush(stdout);
}
}
#else
#define reportXftFonts(xw, result, name, tag, match) /* empty */
#endif /* OPT_REPORT_FONTS */
/*
* Xft discards the pattern-match during open-pattern if the result happens to
* match a currently-open file, but provides no clue to the caller when it does
* this. That is, closing a font-file may leave the data in Xft's cache, while
* opening a file may free the data used for the match.
*
* Because of this problem, we cannot reliably refer to the pattern-match data
* if it may have been seen before.
*/
Boolean
maybeXftCache(XtermWidget xw, XftFont *font)
{
Boolean result = False;
if (font != 0) {
TScreen *screen = TScreenOf(xw);
ListXftFonts *p;
for (p = screen->list_xft_fonts; p != 0; p = p->next) {
if (p->font == font) {
result = True;
break;
}
}
if (!result) {
p = TypeXtMalloc(ListXftFonts);
if (p != 0) {
p->font = font;
p->next = screen->list_xft_fonts;
screen->list_xft_fonts = p;
}
}
}
return result;
}
/*
* Drop an entry from the cache, and close the font.
*/
void
closeCachedXft(TScreen *screen, XftFont *font)
{
if (font != 0) {
ListXftFonts *p, *q;
for (p = screen->list_xft_fonts, q = 0; p != 0; q = p, p = p->next) {
if (p->font == font) {
XftFontClose(screen->display, font);
if (q != 0) {
q->next = p->next;
} else {
screen->list_xft_fonts = p->next;
}
free(p);
break;
}
}
}
}
static XftFont *
xtermOpenXft(XtermWidget xw, const char *name, XftPattern *pat, const char *tag)
{
TScreen *screen = TScreenOf(xw);
Display *dpy = screen->display;
XftResult status;
XftFont *result = 0;
TRACE(("xtermOpenXft(name=%s, tag=%s)\n", name, tag));
if (pat != 0) {
XftPattern *match;
FcConfigSubstitute(NULL, pat, FcMatchPattern);
XftDefaultSubstitute(dpy, DefaultScreen(dpy), pat);
match = FcFontMatch(NULL, pat, &status);
if (match != 0) {
Boolean maybeReopened = False;
result = XftFontOpenPattern(dpy, match);
#ifdef FC_COLOR
if (result != 0) {
if (isBogusXft(result)) {
XftFontClose(dpy, result);
result = 0;
maybeReopened = True;
}
}
#endif
if (result != 0) {
TRACE(("...matched %s font\n", tag));
if (!maybeXftCache(xw, result)) {
reportXftFonts(xw, result, name, tag, match);
}
} else {
TRACE(("...could not open %s font\n", tag));
if (!maybeReopened)
XftPatternDestroy(match);
if (xw->misc.fontWarnings >= fwAlways) {
cannotFont(xw, "open", tag, name);
}
}
} else {
TRACE(("...did not match %s font\n", tag));
if (xw->misc.fontWarnings >= fwResource) {
cannotFont(xw, "match", tag, name);
}
}
}
return result;
}
#if OPT_SHIFT_FONTS
/*
* Don't make a dependency on the math library for a single function.
* (Newton Raphson).
*/
static double
dimSquareRoot(double value)
{
double result = 0.0;
if (value > 0.0) {
int n;
double older = value;
for (n = 0; n < 10; ++n) {
double delta = (older * older - value) / (2.0 * older);
double newer = older - delta;
older = newer;
result = newer;
if (delta > -0.001 && delta < 0.001)
break;
}
}
return result;
}
#endif
#if OPT_WIDE_CHARS
#define MY_UCS(code,high,wide,name) { code, high, wide, #name }
static const struct {
unsigned code, high, wide;
const char *name;
} unicode_boxes[] = {
MY_UCS(0x2500, 0, 1, box drawings light horizontal),
MY_UCS(0x2502, 1, 0, box drawings light vertical),
MY_UCS(0x250c, 2, 2, box drawings light down and right),
MY_UCS(0x2510, 2, 2, box drawings light down and left),
MY_UCS(0x2514, 2, 2, box drawings light up and right),
MY_UCS(0x2518, 2, 2, box drawings light up and left),
MY_UCS(0x251c, 1, 2, box drawings light vertical and right),
MY_UCS(0x2524, 1, 2, box drawings light vertical and left),
MY_UCS(0x252c, 2, 1, box drawings light down and horizontal),
MY_UCS(0x2534, 2, 1, box drawings light up and horizontal),
MY_UCS(0x253c, 1, 1, box drawings light vertical and horizontal),
{
0, 0, 0, NULL
}
};
#undef MY_UCS
#endif /* OPT_WIDE_CHARS */
#ifdef DEBUG_XFT
static void
trace_xft_glyph(TScreen *screen, XftFont *font, FT_Face face, int code, const char *name)
{
if (!XftGlyphExists(screen->display, font, code)) {
TRACE(("Xft glyph U+%04X missing :%s\n", code, name));
} else if (FT_Load_Char(face, code, FT_LOAD_RENDER) == 0) {
FT_GlyphSlot g = face->glyph;
TRACE(("Xft glyph U+%04X size(%3d,%3d) at(%3d,%3d) :%s\n",
code,
g->bitmap.rows, g->bitmap.width,
g->bitmap_top, g->bitmap_left,
name));
}
}
#if OPT_WIDE_CHARS
static void
trace_xft_line_drawing(TScreen *screen, XftFont *font, FT_Face face)
{
int n;
for (n = 0; unicode_boxes[n].code != 0; ++n) {
trace_xft_glyph(screen, font, face, unicode_boxes[n].code,
unicode_boxes[n].name);
}
}
#else
#define trace_xft_line_drawing(screen, font, face) /* nothing */
#endif
#endif
#if OPT_BOX_CHARS
static void
setBrokenBoxChars(XtermWidget xw, Bool state)
{
term->work.broken_box_chars = (Boolean) state;
TScreenOf(xw)->broken_box_chars = (Boolean) state;
update_font_boxchars();
}
#else
#define setBrokenBoxChars(xw, state) /* nothing */
#endif
/*
* Check if the line-drawing characters do not fill the bounding box. If so,
* they're not useful.
*/
#if OPT_BOX_CHARS
static void
linedrawing_gaps(XtermWidget xw, XftFont *font)
{
Boolean broken;
#if OPT_WIDE_CHARS
TScreen *screen = TScreenOf(xw);
int n;
FT_Face face;
face = XftLockFace(font);
broken = False;
for (n = 0; unicode_boxes[n].code; ++n) {
unsigned code = unicode_boxes[n].code;
if (!XftGlyphExists(screen->display, font, code)) {
TRACE(("Xft glyph U+%04X is missing\n", code));
broken = True;
break;
}
if (FT_Load_Char(face, code, FT_LOAD_RENDER) == 0) {
FT_GlyphSlot g = face->glyph;
TRACE(("Xft glyph U+%04X size(%3d,%3d) at(%3d,%3d) :%s\n",
code,
g->bitmap.rows, g->bitmap.width,
g->bitmap_top, g->bitmap_left,
unicode_boxes[n].name));
/*
* While it is possible for badly-designed fonts to have line
* drawing characters which do not meet, FreeType aggravates the
* situation with its rounding. Check for an obvious case where
* the weights at the ends of a vertical line do not add up. That
* shows up as two under-weight rows at the beginning/end of the
* bitmap.
*/
if (code == 0x2502) {
unsigned r, c;
unsigned mids = 0, ends = 0;
unsigned char *data = g->bitmap.buffer;
switch (g->bitmap.pixel_mode) {
case FT_PIXEL_MODE_MONO:
/* FALLTHRU */
case FT_PIXEL_MODE_GRAY:
for (r = 0; r < (unsigned) g->bitmap.rows; ++r) {
unsigned k = r * (unsigned) g->bitmap.pitch;
unsigned sum = 0;
for (c = 0; c < (unsigned) g->bitmap.width; ++c) {
unsigned xx = 0;
switch (g->bitmap.pixel_mode) {
case FT_PIXEL_MODE_MONO:
xx = (data[k + (c / 8)] >> (c % 8)) & 1;
break;
case FT_PIXEL_MODE_GRAY:
xx = data[k + c];
break;
}
sum += xx;
TRACE2((" %2x", xx));
}
TRACE2((" = %u\n", sum));
if (r > 0 && (r + 1) < (unsigned) g->bitmap.rows) {
mids = sum;
} else {
ends += sum;
}
}
TRACE(("...compare middle %u vs ends %u\n", mids, ends));
if ((mids > ends) && (g->bitmap.rows < 16))
broken = True;
break;
default:
TRACE(("FIXME pixel_mode %d not handled\n",
g->bitmap.pixel_mode));
break;
}
if (broken)
break;
}
switch (unicode_boxes[n].high) {
case 1:
if ((unsigned) g->bitmap.rows < (unsigned) FontHeight(screen)) {
broken = True;
}
break;
case 2:
if ((unsigned) (g->bitmap.rows * 2) < (unsigned) FontHeight(screen)) {
broken = True;
}
break;
}
switch (unicode_boxes[n].wide) {
case 1:
if ((unsigned) g->bitmap.width < (unsigned) FontWidth(screen)) {
broken = True;
}
break;
case 2:
if ((unsigned) (g->bitmap.width * 2) < (unsigned) FontWidth(screen)) {
broken = True;
}
break;
}
if (broken)
break;
}
}
XftUnlockFace(font);
#else
(void) font;
broken = True;
#endif
if (broken) {
TRACE(("Xft line-drawing would leave gaps\n"));
setBrokenBoxChars(xw, True);
}
}
#endif /* OPT_BOX_CHARS */
/*
* Given the Xft font metrics, determine the actual font size. This is used
* for each font to ensure that normal, bold and italic fonts follow the same
* rule.
*/
static void
setRenderFontsize(XtermWidget xw, VTwin *win, XftFont *font, const char *tag)
{
if (font != 0) {
TScreen *screen = TScreenOf(xw);
int width, height, ascent, descent;
#ifdef DEBUG_XFT
int n;
FT_Face face;
FT_Size size;
FT_Size_Metrics metrics;
Boolean scalable;
Boolean is_fixed;
Boolean debug_xft = False;
face = XftLockFace(font);
size = face->size;
metrics = size->metrics;
is_fixed = FT_IS_FIXED_WIDTH(face);
scalable = FT_IS_SCALABLE(face);
trace_xft_line_drawing(screen, font, face);
for (n = 32; n < 127; ++n) {
char name[80];
sprintf(name, "letter \"%c\"", n);
trace_xft_glyph(screen, font, face, n, name);
}
XftUnlockFace(font);
/* freetype's inconsistent for this sign */
metrics.descender = -metrics.descender;
#define TR_XFT "Xft metrics: "
#define D_64(name) ((double)(metrics.name)/64.0)
#define M_64(a,b) ((font->a * 64) != metrics.b)
#define BOTH(a,b) D_64(b), M_64(a,b) ? "*" : ""
debug_xft = (M_64(ascent, ascender)
|| M_64(descent, descender)
|| M_64(height, height)
|| M_64(max_advance_width, max_advance));
TRACE(("Xft font is %sscalable, %sfixed-width\n",
is_fixed ? "" : "not ",
scalable ? "" : "not "));
if (debug_xft) {
TRACE(("Xft font size %d+%d vs %d by %d\n",
font->ascent,
font->descent,
font->height,
font->max_advance_width));
TRACE((TR_XFT "ascender %6.2f%s\n", BOTH(ascent, ascender)));
TRACE((TR_XFT "descender %6.2f%s\n", BOTH(descent, descender)));
TRACE((TR_XFT "height %6.2f%s\n", BOTH(height, height)));
TRACE((TR_XFT "max_advance %6.2f%s\n", BOTH(max_advance_width, max_advance)));
} else {
TRACE((TR_XFT "matches font\n"));
}
#endif
width = font->max_advance_width;
height = font->height;
ascent = font->ascent;
descent = font->descent;
if (height < ascent + descent) {
TRACE(("...increase height from %d to %d\n", height, ascent + descent));
height = ascent + descent;
}
if (is_double_width_font_xft(screen->display, font)) {
TRACE(("...reduce width from %d to %d\n", width, width >> 1));
width >>= 1;
}
if (tag == 0) {
SetFontWidth(screen, win, width);
SetFontHeight(screen, win, height);
win->f_ascent = ascent;
win->f_descent = descent;
TRACE(("setRenderFontsize result %dx%d (%d+%d)\n",
width, height, ascent, descent));
} else if (win->f_width < width ||
win->f_height < height ||
win->f_ascent < ascent ||
win->f_descent < descent) {
TRACE(("setRenderFontsize %s changed %dx%d (%d+%d) to %dx%d (%d+%d)\n",
tag,
win->f_width, win->f_height, win->f_ascent, win->f_descent,
width, height, ascent, descent));
SetFontWidth(screen, win, width);
SetFontHeight(screen, win, height);
win->f_ascent = ascent;
win->f_descent = descent;
} else {
TRACE(("setRenderFontsize %s unchanged\n", tag));
}
#if OPT_BOX_CHARS
if (!screen->broken_box_chars && (tag == 0)) {
linedrawing_gaps(xw, font);
}
#endif
}
}
#endif
static void
checkFontInfo(int value, const char *tag, int failed)
{
if (value == 0 || failed) {
if (value == 0) {
xtermWarning("Selected font has no non-zero %s for ISO-8859-1 encoding\n", tag);
exit(1);
} else {
xtermWarning("Selected font has no valid %s for ISO-8859-1 encoding\n", tag);
}
}
}
#if OPT_RENDERFONT
void
xtermCloseXft(TScreen *screen, XTermXftFonts *pub)
{
if (pub->font != 0) {
Cardinal n;
closeCachedXft(screen, pub->font);
pub->font = 0;
if (pub->pattern) {
XftPatternDestroy(pub->pattern);
pub->pattern = 0;
}
if (pub->fontset) {
XftFontSetDestroy(pub->fontset);
pub->fontset = 0;
}
for (n = 0; n < pub->limit; ++n) {
if (pub->cache[n].font) {
closeCachedXft(screen, pub->cache[n].font);
}
}
}
}
/*
* Get the faceName/faceNameDoublesize resource setting.
*/
String
getFaceName(XtermWidget xw, Bool wideName GCC_UNUSED)
{
#if OPT_RENDERWIDE
String result = (wideName
? FirstItemOf(xw->work.fonts.xft.list_w)
: CurrentXftFont(xw));
#else
String result = CurrentXftFont(xw);
#endif
return x_nonempty(result);
}
/*
* If we change the faceName, we'll have to re-acquire all of the fonts that
* are derived from it.
*/
void
setFaceName(XtermWidget xw, const char *value)
{
TScreen *screen = TScreenOf(xw);
Boolean changed = (Boolean) ((CurrentXftFont(xw) == 0)
|| strcmp(CurrentXftFont(xw), value));
if (changed) {
int n;
CurrentXftFont(xw) = x_strdup(value);
for (n = 0; n < NMENUFONTS; ++n) {
int e;
xw->misc.face_size[n] = -1.0;
for (e = 0; e < fMAX; ++e) {
xtermCloseXft(screen, getMyXftFont(xw, e, n));
}
}
}
}
#endif
/*
* Compute useful values for the font/window sizes
*/
void
xtermComputeFontInfo(XtermWidget xw,
VTwin *win,
XFontStruct *font,
int sbwidth)
{
TScreen *screen = TScreenOf(xw);
int i, j, width, height;
#if OPT_RENDERFONT
int fontnum = screen->menu_font_number;
#endif
int failed = 0;
#if OPT_RENDERFONT
/*
* xterm contains a lot of references to fonts, assuming they are fixed
* size. This chunk of code overrides the actual font-selection (see
* drawXtermText()), if the user has selected render-font. All of the
* font-loading for fixed-fonts still goes on whether or not this chunk
* overrides it.
*/
if (UsingRenderFont(xw) && fontnum >= 0) {
String face_name = getFaceName(xw, False);
XTermXftFonts norm = screen->renderFontNorm[fontnum];
XTermXftFonts bold = screen->renderFontBold[fontnum];
XTermXftFonts ital = screen->renderFontItal[fontnum];
XTermXftFonts btal = screen->renderFontBtal[fontnum];
#if OPT_RENDERWIDE
XTermXftFonts wnorm = screen->renderWideNorm[fontnum];
XTermXftFonts wbold = screen->renderWideBold[fontnum];
XTermXftFonts wital = screen->renderWideItal[fontnum];
XTermXftFonts wbtal = screen->renderWideBtal[fontnum];
#endif
if (norm.font == 0 && !IsEmpty(face_name)) {
XftPattern *pat;
double face_size;
TRACE(("xtermComputeFontInfo font %d: norm(face %s, size %.1f)\n",
fontnum, face_name,
xw->misc.face_size[fontnum]));
TRACE(("Using Xft %d\n", XftVersion));
TRACE(("Using FontConfig %d\n", FC_VERSION));
fillInFaceSize(xw, fontnum);
face_size = xw->misc.face_size[fontnum];
/*
* By observation (there is no documentation), XftPatternBuild is
* cumulative. Build the bold- and italic-patterns on top of the
* normal pattern.
*/
#ifdef FC_COLOR
#define NormXftPattern \
XFT_FAMILY, XftTypeString, "mono", \
FC_COLOR, XftTypeBool, FcFalse, \
FC_OUTLINE, XftTypeBool, FcTrue, \
XFT_SIZE, XftTypeDouble, face_size
#else
#define NormXftPattern \
XFT_FAMILY, XftTypeString, "mono", \
XFT_SIZE, XftTypeDouble, face_size
#endif
#define BoldXftPattern(norm) \
XFT_WEIGHT, XftTypeInteger, XFT_WEIGHT_BOLD, \
XFT_CHAR_WIDTH, XftTypeInteger, norm.font->max_advance_width
#define ItalXftPattern(norm) \
XFT_SLANT, XftTypeInteger, XFT_SLANT_ITALIC, \
XFT_CHAR_WIDTH, XftTypeInteger, norm.font->max_advance_width
#define BtalXftPattern(norm) \
XFT_WEIGHT, XftTypeInteger, XFT_WEIGHT_BOLD, \
XFT_SLANT, XftTypeInteger, XFT_SLANT_ITALIC, \
XFT_CHAR_WIDTH, XftTypeInteger, norm.font->max_advance_width
#if OPT_WIDE_ATTRS
#define HAVE_ITALICS 1
#define FIND_ITALICS ((pat = XftNameParse(face_name)) != 0)
#elif OPT_ISO_COLORS
#define HAVE_ITALICS 1
#define FIND_ITALICS (screen->italicULMode && (pat = XftNameParse(face_name)) != 0)
#else
#define HAVE_ITALICS 0
#endif
#if OPT_DEC_CHRSET
freeall_DoubleFT(xw);
#endif
if ((pat = XftNameParse(face_name)) != 0) {
#define OPEN_XFT(name, tag) name.font = xtermOpenXft(xw, face_name, name.pattern, tag)
norm.pattern = XftPatternDuplicate(pat);
XftPatternBuild(norm.pattern,
NormXftPattern,
(void *) 0);
OPEN_XFT(norm, "normal");
if (norm.font != 0) {
bold.pattern = XftPatternDuplicate(pat);
XftPatternBuild(bold.pattern,
NormXftPattern,
BoldXftPattern(norm),
(void *) 0);
OPEN_XFT(bold, "bold");
#if HAVE_ITALICS
if (FIND_ITALICS) {
ital.pattern = XftPatternDuplicate(pat);
XftPatternBuild(ital.pattern,
NormXftPattern,
ItalXftPattern(norm),
(void *) 0);
OPEN_XFT(ital, "italic");
btal.pattern = XftPatternDuplicate(pat);
XftPatternBuild(btal.pattern,
NormXftPattern,
BtalXftPattern(norm),
(void *) 0);
OPEN_XFT(btal, "bold-italic");
}
#endif
/*
* FIXME: just assume that the corresponding font has no
* graphics characters.
*/
if (screen->fnt_boxes) {
screen->fnt_boxes = 0;
TRACE(("Xft opened - will %suse internal line-drawing characters\n",
screen->fnt_boxes ? "not " : ""));
}
}
CACHE_XFT(screen->renderFontNorm, norm);
CACHE_XFT(screen->renderFontBold, bold);
if (norm.font != 0 && !bold.font) {
xtermWarning("did not find a usable bold TrueType font\n");
XftPatternDestroy(bold.pattern);
bold.pattern = XftPatternDuplicate(pat);
XftPatternBuild(bold.pattern,
NormXftPattern,
(void *) 0);
OPEN_XFT(bold, "bold");
failed = 0;
CACHE_XFT(screen->renderFontBold, bold);
}
#if HAVE_ITALICS
CACHE_XFT(screen->renderFontItal, ital);
if (norm.font != 0 && !ital.font) {
xtermWarning("did not find a usable italic TrueType font\n");
XftPatternDestroy(ital.pattern);
ital.pattern = XftPatternDuplicate(pat);
XftPatternBuild(ital.pattern,
NormXftPattern,
(void *) 0);
OPEN_XFT(ital, "italics");
failed = 0;
CACHE_XFT(screen->renderFontItal, ital);
}
CACHE_XFT(screen->renderFontBtal, btal);
if (norm.font != 0 && !btal.font) {
xtermWarning("did not find a usable bold italic TrueType font\n");
XftPatternDestroy(btal.pattern);
btal.pattern = XftPatternDuplicate(pat);
XftPatternBuild(btal.pattern,
NormXftPattern,
(void *) 0);
OPEN_XFT(btal, "bold-italics");
failed = 0;
CACHE_XFT(screen->renderFontBtal, btal);
}
#endif
XftPatternDestroy(pat);
} else {
failed = 1;
}
#undef OPEN_XFT
/*
* See xtermXftDrawString(). A separate double-width font is nice
* to have, but not essential.
*/
#if OPT_RENDERWIDE
if (norm.font != 0 && screen->wide_chars) {
int char_width = norm.font->max_advance_width * 2;
double aspect = ((FirstItemOf(xw->work.fonts.xft.list_w)
|| screen->renderFontNorm[fontnum].map.mixed)
? 1.0
: 2.0);
face_name = getFaceName(xw, True);
TRACE(("xtermComputeFontInfo wide(face %s, char_width %d)\n",
NonNull(face_name),
char_width));
#define WideXftPattern \
XFT_FAMILY, XftTypeString, "mono", \
XFT_SIZE, XftTypeDouble, face_size, \
XFT_SPACING, XftTypeInteger, XFT_MONO, \
XFT_CHAR_WIDTH, XftTypeInteger, char_width, \
FC_ASPECT, XftTypeDouble, aspect
if (!IsEmpty(face_name) && (pat = XftNameParse(face_name))
!= 0) {
#define OPEN_XFT(name, tag) name.font = xtermOpenXft(xw, face_name, name.pattern, tag)
wnorm.pattern = XftPatternDuplicate(pat);
XftPatternBuild(wnorm.pattern,
WideXftPattern,
(void *) 0);
OPEN_XFT(wnorm, "wide");
if (wnorm.font != 0) {
wbold.pattern = XftPatternDuplicate(pat);
XftPatternBuild(wbold.pattern,
WideXftPattern,
BoldXftPattern(wnorm),
(void *) 0);
OPEN_XFT(wbold, "wide-bold");
#if HAVE_ITALICS
if (FIND_ITALICS) {
wital.pattern = XftPatternDuplicate(pat);
XftPatternBuild(wital.pattern,
WideXftPattern,
ItalXftPattern(wnorm),
(void *) 0);
OPEN_XFT(wital, "wide-italic");
}
CACHE_XFT(screen->renderWideBtal, wbtal);
if (!wbtal.font) {
xtermWarning("did not find a usable wide bold italic TrueType font\n");
XftPatternDestroy(wbtal.pattern);
wbtal.pattern = XftPatternDuplicate(pat);
XftPatternBuild(wbtal.pattern,
WideXftPattern,
(void *) 0);
OPEN_XFT(wbtal, "wide-bold-italics");
failed = 0;
CACHE_XFT(screen->renderWideBtal, wbtal);
}
#endif
}
CACHE_XFT(screen->renderWideNorm, wnorm);
CACHE_XFT(screen->renderWideBold, wbold);
if (wnorm.font != 0 && !wbold.font) {
xtermWarning("did not find a usable wide-bold TrueType font\n");
XftPatternDestroy(wbold.pattern);
wbold.pattern = XftPatternDuplicate(pat);
XftPatternBuild(bold.pattern,
WideXftPattern,
(void *) 0);
OPEN_XFT(wbold, "wide-bold");
failed = 0;
CACHE_XFT(screen->renderWideBold, bold);
}
CACHE_XFT(screen->renderWideItal, wital);
if (wnorm.font != 0 && !wital.font) {
xtermWarning("did not find a usable wide-italic TrueType font\n");
XftPatternDestroy(wital.pattern);
wital.pattern = XftPatternDuplicate(pat);
XftPatternBuild(wital.pattern,
WideXftPattern,
(void *) 0);
OPEN_XFT(wital, "wide-italic");
failed = 0;
CACHE_XFT(screen->renderWideItal, wital);
}
XftPatternDestroy(pat);
}
#undef OPEN_XFT
}
#endif /* OPT_RENDERWIDE */
}
if (norm.font == 0) {
TRACE(("...no TrueType font found for number %d, disable menu entry\n", fontnum));
xw->work.render_font = False;
update_font_renderfont();
/* now we will fall through into the bitmap fonts */
} else {
setBrokenBoxChars(xw, False);
setRenderFontsize(xw, win, norm.font, NULL);
setRenderFontsize(xw, win, bold.font, "bold");
setRenderFontsize(xw, win, ital.font, "ital");
setRenderFontsize(xw, win, btal.font, "btal");
#if OPT_BOX_CHARS
setupPackedFonts(xw);
if (screen->force_packed) {
XTermXftFonts *use = &(screen->renderFontNorm[fontnum]);
SetFontHeight(screen, win, use->font->ascent + use->font->descent);
SetFontWidth(screen, win, use->map.min_width);
TRACE(("...packed TrueType font %dx%d vs %d\n",
win->f_height,
win->f_width,
use->map.max_width));
}
#endif
DUMP_XFT(xw, &(screen->renderFontNorm[fontnum]));
}
}
/*
* Are we handling a bitmap font?
*/
else
#endif /* OPT_RENDERFONT */
{
if (is_double_width_font(font) && !(screen->fnt_prop)) {
SetFontWidth(screen, win, font->min_bounds.width);
} else {
SetFontWidth(screen, win, font->max_bounds.width);
}
SetFontHeight(screen, win, font->ascent + font->descent);
win->f_ascent = font->ascent;
win->f_descent = font->descent;
}
i = 2 * screen->border + sbwidth;
j = 2 * screen->border;
width = MaxCols(screen) * win->f_width + i;
height = MaxRows(screen) * win->f_height + j;
win->fullwidth = (Dimension) width;
win->fullheight = (Dimension) height;
win->width = width - i;
win->height = height - j;
TRACE(("xtermComputeFontInfo window %dx%d (full %dx%d), fontsize %dx%d (asc %d, dsc %d)\n",
win->height,
win->width,
win->fullheight,
win->fullwidth,
win->f_height,
win->f_width,
win->f_ascent,
win->f_descent));
checkFontInfo(win->f_height, "height", failed);
checkFontInfo(win->f_width, "width", failed);
}
/* save this information as a side-effect for double-sized characters */
static void
xtermSaveFontInfo(TScreen *screen, XFontStruct *font)
{
screen->fnt_wide = (Dimension) (font->max_bounds.width);
screen->fnt_high = (Dimension) (font->ascent + font->descent);
TRACE(("xtermSaveFontInfo %dx%d\n", screen->fnt_high, screen->fnt_wide));
}
/*
* After loading a new font, update the structures that use its size.
*/
void
xtermUpdateFontInfo(XtermWidget xw, Bool doresize)
{
TScreen *screen = TScreenOf(xw);
int scrollbar_width;
VTwin *win = &(screen->fullVwin);
#if USE_DOUBLE_BUFFER
discardRenderDraw(TScreenOf(xw));
#endif /* USE_DOUBLE_BUFFER */
scrollbar_width = (xw->misc.scrollbar
? (screen->scrollWidget->core.width +
BorderWidth(screen->scrollWidget))
: 0);
xtermComputeFontInfo(xw, win, GetNormalFont(screen, fNorm)->fs, scrollbar_width);
xtermSaveFontInfo(screen, GetNormalFont(screen, fNorm)->fs);
if (doresize) {
if (VWindow(screen)) {
xtermClear(xw);
}
TRACE(("xtermUpdateFontInfo {{\n"));
DoResizeScreen(xw); /* set to the new natural size */
ResizeScrollBar(xw);
Redraw();
TRACE(("... }} xtermUpdateFontInfo\n"));
#ifdef SCROLLBAR_RIGHT
updateRightScrollbar(xw);
#endif
}
xtermSetCursorBox(screen);
}
#if OPT_BOX_CHARS || OPT_REPORT_FONTS
/*
* Returns true if the given character is missing from the specified font.
*/
Bool
xtermMissingChar(unsigned ch, XTermFonts * font)
{
Bool result = False;
XFontStruct *fs = font->fs;
XCharStruct *pc = 0;
if (fs == NULL) {
result = True;
} else if (fs->max_byte1 == 0) {
#if OPT_WIDE_CHARS
if (ch < 256)
#endif
{
CI_GET_CHAR_INFO_1D(fs, E2A(ch), pc);
}
}
#if OPT_WIDE_CHARS
else {
unsigned row = (ch >> 8);
unsigned col = (ch & 0xff);
CI_GET_CHAR_INFO_2D(fs, row, col, pc);
}
#endif
if (pc == 0 || CI_NONEXISTCHAR(pc)) {
TRACE2(("xtermMissingChar %#04x (!exists), %d cells\n",
ch, CharWidth(ch)));
result = True;
}
if (ch < KNOWN_MISSING) {
font->known_missing[ch] = (Char) (result ? 2 : 1);
}
return result;
}
#endif
#if OPT_BOX_CHARS
/*
* The grid is arbitrary, enough resolution that nothing's lost in
* initialization.
*/
#define BOX_HIGH 60
#define BOX_WIDE 60
#define MID_HIGH (BOX_HIGH/2)
#define MID_WIDE (BOX_WIDE/2)
#define CHR_WIDE ((9*BOX_WIDE)/10)
#define CHR_HIGH ((9*BOX_HIGH)/10)
/*
* ...since we'll scale the values anyway.
*/
#define SCALED_X(n) ((int)(n) * (((int) font_width) - 1)) / (BOX_WIDE-1)
#define SCALED_Y(n) ((int)(n) * (((int) font_height) - 1)) / (BOX_HIGH-1)
#define SCALE_X(n) n = SCALED_X(n)
#define SCALE_Y(n) n = SCALED_Y(n)
#define SEG(x0,y0,x1,y1) x0,y0, x1,y1
/*
* Draw the given graphic character, if it is simple enough (i.e., a
* line-drawing character).
*/
void
xtermDrawBoxChar(XTermDraw * params,
unsigned ch,
GC gc,
int x,
int y,
int cells)
{
TScreen *screen = TScreenOf(params->xw);
/* *INDENT-OFF* */
static const short glyph_ht[] = {
SEG(1*BOX_WIDE/10, 0, 1*BOX_WIDE/10,5*MID_HIGH/6), /* H */
SEG(6*BOX_WIDE/10, 0, 6*BOX_WIDE/10,5*MID_HIGH/6),
SEG(1*BOX_WIDE/10,5*MID_HIGH/12,6*BOX_WIDE/10,5*MID_HIGH/12),
SEG(2*BOX_WIDE/10, MID_HIGH, CHR_WIDE, MID_HIGH), /* T */
SEG(6*BOX_WIDE/10, MID_HIGH, 6*BOX_WIDE/10, CHR_HIGH),
-1
}, glyph_ff[] = {
SEG(1*BOX_WIDE/10, 0, 6*BOX_WIDE/10, 0), /* F */
SEG(1*BOX_WIDE/10,5*MID_HIGH/12,6*CHR_WIDE/12,5*MID_HIGH/12),
SEG(1*BOX_WIDE/10, 0, 0*BOX_WIDE/3, 5*MID_HIGH/6),
SEG(1*BOX_WIDE/3, MID_HIGH, CHR_WIDE, MID_HIGH), /* F */
SEG(1*BOX_WIDE/3, 8*MID_HIGH/6,10*CHR_WIDE/12,8*MID_HIGH/6),
SEG(1*BOX_WIDE/3, MID_HIGH, 1*BOX_WIDE/3, CHR_HIGH),
-1
}, glyph_lf[] = {
SEG(1*BOX_WIDE/10, 0, 1*BOX_WIDE/10,9*MID_HIGH/12), /* L */
SEG(1*BOX_WIDE/10,9*MID_HIGH/12,6*BOX_WIDE/10,9*MID_HIGH/12),
SEG(1*BOX_WIDE/3, MID_HIGH, CHR_WIDE, MID_HIGH), /* F */
SEG(1*BOX_WIDE/3, 8*MID_HIGH/6,10*CHR_WIDE/12,8*MID_HIGH/6),
SEG(1*BOX_WIDE/3, MID_HIGH, 1*BOX_WIDE/3, CHR_HIGH),
-1
}, glyph_nl[] = {
SEG(1*BOX_WIDE/10,5*MID_HIGH/6, 1*BOX_WIDE/10, 0), /* N */
SEG(1*BOX_WIDE/10, 0, 5*BOX_WIDE/6, 5*MID_HIGH/6),
SEG(5*BOX_WIDE/6, 5*MID_HIGH/6, 5*BOX_WIDE/6, 0),
SEG(1*BOX_WIDE/3, MID_HIGH, 1*BOX_WIDE/3, CHR_HIGH), /* L */
SEG(1*BOX_WIDE/3, CHR_HIGH, CHR_WIDE, CHR_HIGH),
-1
}, glyph_vt[] = {
SEG(1*BOX_WIDE/10, 0, 5*BOX_WIDE/12,5*MID_HIGH/6), /* V */
SEG(5*BOX_WIDE/12,5*MID_HIGH/6, 5*BOX_WIDE/6, 0),
SEG(2*BOX_WIDE/10, MID_HIGH, CHR_WIDE, MID_HIGH), /* T */
SEG(6*BOX_WIDE/10, MID_HIGH, 6*BOX_WIDE/10, CHR_HIGH),
-1
}, plus_or_minus[] =
{
SEG( 0, 5*BOX_HIGH/6, CHR_WIDE, 5*BOX_HIGH/6),
SEG( MID_WIDE, 2*BOX_HIGH/6, MID_WIDE, 4*BOX_HIGH/6),
SEG( 0, 3*BOX_HIGH/6, CHR_WIDE, 3*BOX_HIGH/6),
-1
}, lower_right_corner[] =
{
SEG( 0, MID_HIGH, MID_WIDE, MID_HIGH),
SEG( MID_WIDE, MID_HIGH, MID_WIDE, 0),
-1
}, upper_right_corner[] =
{
SEG( 0, MID_HIGH, MID_WIDE, MID_HIGH),
SEG( MID_WIDE, MID_HIGH, MID_WIDE, BOX_HIGH),
-1
}, upper_left_corner[] =
{
SEG( MID_WIDE, MID_HIGH, BOX_WIDE, MID_HIGH),
SEG( MID_WIDE, MID_HIGH, MID_WIDE, BOX_HIGH),
-1
}, lower_left_corner[] =
{
SEG( MID_WIDE, 0, MID_WIDE, MID_HIGH),
SEG( MID_WIDE, MID_WIDE, BOX_WIDE, MID_HIGH),
-1
}, cross[] =
{
SEG( 0, MID_HIGH, BOX_WIDE, MID_HIGH),
SEG( MID_WIDE, 0, MID_WIDE, BOX_HIGH),
-1
}, scan_line_1[] =
{
SEG( 0, 0, BOX_WIDE, 0),
-1
}, scan_line_3[] =
{
SEG( 0, BOX_HIGH/4, BOX_WIDE, BOX_HIGH/4),
-1
}, scan_line_7[] =
{
SEG( 0, MID_HIGH, BOX_WIDE, MID_HIGH),
-1
}, scan_line_9[] =
{
SEG( 0, 3*BOX_HIGH/4, BOX_WIDE, 3*BOX_HIGH/4),
-1
}, horizontal_line[] =
{
SEG( 0, BOX_HIGH, BOX_WIDE, BOX_HIGH),
-1
}, left_tee[] =
{
SEG( MID_WIDE, 0, MID_WIDE, BOX_HIGH),
SEG( MID_WIDE, MID_HIGH, BOX_WIDE, MID_HIGH),
-1
}, right_tee[] =
{
SEG( MID_WIDE, 0, MID_WIDE, BOX_HIGH),
SEG( MID_WIDE, MID_HIGH, 0, MID_HIGH),
-1
}, bottom_tee[] =
{
SEG( 0, MID_HIGH, BOX_WIDE, MID_HIGH),
SEG( MID_WIDE, 0, MID_WIDE, MID_HIGH),
-1
}, top_tee[] =
{
SEG( 0, MID_HIGH, BOX_WIDE, MID_HIGH),
SEG( MID_WIDE, MID_HIGH, MID_WIDE, BOX_HIGH),
-1
}, vertical_line[] =
{
SEG( MID_WIDE, 0, MID_WIDE, BOX_HIGH),
-1
}, less_than_or_equal[] =
{
SEG( CHR_WIDE, BOX_HIGH/3, 0, MID_HIGH),
SEG( CHR_WIDE, 2*BOX_HIGH/3, 0, MID_HIGH),
SEG( 0, 3*BOX_HIGH/4, CHR_WIDE, 3*BOX_HIGH/4),
-1
}, greater_than_or_equal[] =
{
SEG( 0, BOX_HIGH/3, CHR_WIDE, MID_HIGH),
SEG( 0, 2*BOX_HIGH/3, CHR_WIDE, MID_HIGH),
SEG( 0, 3*BOX_HIGH/4, CHR_WIDE, 3*BOX_HIGH/4),
-1
}, greek_pi[] =
{
SEG( 0, MID_HIGH, CHR_WIDE, MID_HIGH),
SEG(5*CHR_WIDE/6, MID_HIGH, 5*CHR_WIDE/6, CHR_HIGH),
SEG(2*CHR_WIDE/6, MID_HIGH, 2*CHR_WIDE/6, CHR_HIGH),
-1
}, not_equal_to[] =
{
SEG(2*BOX_WIDE/3, 1*BOX_HIGH/3, 1*BOX_WIDE/3, CHR_HIGH),
SEG( 0, 2*BOX_HIGH/3, CHR_WIDE, 2*BOX_HIGH/3),
SEG( 0, MID_HIGH, CHR_WIDE, MID_HIGH),
-1
};
/* *INDENT-ON* */
static const short *lines[] =
{
0, /* 00 (unused) */
0, /* 01 diamond */
0, /* 02 box */
glyph_ht, /* 03 HT */
glyph_ff, /* 04 FF */
0, /* 05 CR */
glyph_lf, /* 06 LF */
0, /* 07 degrees (small circle) */
plus_or_minus, /* 08 */
glyph_nl, /* 09 */
glyph_vt, /* 0A */
lower_right_corner, /* 0B */
upper_right_corner, /* 0C */
upper_left_corner, /* 0D */
lower_left_corner, /* 0E */
cross, /* 0F */
scan_line_1, /* 10 */
scan_line_3, /* 11 */
scan_line_7, /* 12 */
scan_line_9, /* 13 */
horizontal_line, /* 14 */
left_tee, /* 15 */
right_tee, /* 16 */
bottom_tee, /* 17 */
top_tee, /* 18 */
vertical_line, /* 19 */
less_than_or_equal, /* 1A */
greater_than_or_equal, /* 1B */
greek_pi, /* 1C */
not_equal_to, /* 1D */
0, /* 1E LB */
0, /* 1F bullet */
};
GC gc2;
CgsEnum cgsId = (ch == 2) ? gcDots : gcLine;
VTwin *cgsWin = WhichVWin(screen);
const short *p;
unsigned font_width = (((params->draw_flags & DOUBLEWFONT) ? 2U : 1U)
* screen->fnt_wide);
unsigned font_height = (((params->draw_flags & DOUBLEHFONT) ? 2U : 1U)
* screen->fnt_high);
if (cells > 1)
font_width *= (unsigned) cells;
#if OPT_WIDE_CHARS
/*
* Try to show line-drawing characters if we happen to be in UTF-8
* mode, but have gotten an old-style font.
*/
if (screen->utf8_mode
#if OPT_RENDERFONT
&& !UsingRenderFont(params->xw)
#endif
&& (ch > 127)
&& (ch != UCS_REPL)) {
int which = (params->attr_flags & BOLD) ? fBold : fNorm;
unsigned n;
for (n = 1; n < 32; n++) {
if (xtermMissingChar(n, getNormalFont(screen, which)))
continue;
if (dec2ucs(screen, n) != ch)
continue;
TRACE(("...use xterm-style linedrawing U+%04X ->%d\n", ch, n));
ch = n;
break;
}
}
#endif
#if OPT_VT52_MODE
if (!(screen->vtXX_level)) {
switch (ch) {
case 6:
ch = 7;
break;
default:
ch = 256;
break;
}
}
#endif
TRACE(("DRAW_BOX(%d) cell %dx%d at %d,%d%s\n",
ch, font_height, font_width, y, x,
(ch >= (sizeof(lines) / sizeof(lines[0]))
? "-BAD"
: "")));
if (cgsId == gcDots) {
setCgsFont(params->xw, cgsWin, cgsId, getCgsFont(params->xw, cgsWin, gc));
setCgsFore(params->xw, cgsWin, cgsId, getCgsFore(params->xw, cgsWin, gc));
setCgsBack(params->xw, cgsWin, cgsId, getCgsBack(params->xw, cgsWin, gc));
} else {
setCgsFont(params->xw, cgsWin, cgsId, getCgsFont(params->xw, cgsWin, gc));
setCgsFore(params->xw, cgsWin, cgsId, getCgsBack(params->xw, cgsWin, gc));
setCgsBack(params->xw, cgsWin, cgsId, getCgsBack(params->xw, cgsWin, gc));
}
gc2 = getCgsGC(params->xw, cgsWin, cgsId);
if (!(params->draw_flags & NOBACKGROUND)) {
XFillRectangle(screen->display, VDrawable(screen), gc2, x, y,
font_width,
font_height);
}
setCgsFont(params->xw, cgsWin, cgsId, getCgsFont(params->xw, cgsWin, gc));
setCgsFore(params->xw, cgsWin, cgsId, getCgsFore(params->xw, cgsWin, gc));
setCgsBack(params->xw, cgsWin, cgsId, getCgsBack(params->xw, cgsWin, gc));
gc2 = getCgsGC(params->xw, cgsWin, cgsId);
XSetLineAttributes(screen->display, gc2,
(params->attr_flags & BOLD)
? ((font_height > 12)
? font_height / 12
: 1)
: ((font_height > 16)
? font_height / 16
: 1),
LineSolid,
CapProjecting,
JoinMiter);
if (ch == 1) { /* diamond */
XPoint points[5];
int npoints = 5, n;
points[0].x = MID_WIDE;
points[0].y = BOX_HIGH / 4;
points[1].x = 8 * BOX_WIDE / 8;
points[1].y = MID_HIGH;
points[2].x = points[0].x;
points[2].y = 3 * BOX_HIGH / 4;
points[3].x = 0 * BOX_WIDE / 8;
points[3].y = points[1].y;
points[4].x = points[0].x;
points[4].y = points[0].y;
for (n = 0; n < npoints; ++n) {
points[n].x = (short) SCALED_X(points[n].x);
points[n].y = (short) SCALED_Y(points[n].y);
points[n].x = (short) (points[n].x + x);
points[n].y = (short) (points[n].y + y);
}
XFillPolygon(screen->display,
VDrawable(screen), gc2,
points, npoints,
Convex, CoordModeOrigin);
} else if (ch == 7) { /* degrees */
unsigned width = (BOX_WIDE / 3);
int x_coord = MID_WIDE - (int) (width / 2);
int y_coord = MID_HIGH - (int) width;
SCALE_X(x_coord);
SCALE_Y(y_coord);
width = (unsigned) SCALED_X(width);
XDrawArc(screen->display,
VDrawable(screen), gc2,
x + x_coord, y + y_coord, width, width,
0,
360 * 64);
} else if (ch == 0x1f) { /* bullet */
unsigned width = 7 * BOX_WIDE / 10;
int x_coord = MID_WIDE - (int) (width / 3);
int y_coord = MID_HIGH - (int) (width / 3);
SCALE_X(x_coord);
SCALE_Y(y_coord);
width = (unsigned) SCALED_X(width);
XDrawArc(screen->display,
VDrawable(screen), gc2,
x + x_coord, y + y_coord, width, width,
0,
360 * 64);
} else if (ch < (sizeof(lines) / sizeof(lines[0]))
&& (p = lines[ch]) != 0) {
int coord[4];
int n = 0;
while (*p >= 0) {
coord[n++] = *p++;
if (n == 4) {
SCALE_X(coord[0]);
SCALE_Y(coord[1]);
SCALE_X(coord[2]);
SCALE_Y(coord[3]);
XDrawLine(screen->display,
VDrawable(screen), gc2,
x + coord[0], y + coord[1],
x + coord[2], y + coord[3]);
n = 0;
}
}
} else if (screen->force_all_chars) {
/* bounding rectangle, for debugging */
XDrawRectangle(screen->display, VDrawable(screen), gc2, x, y,
font_width - 1,
font_height - 1);
}
}
#endif /* OPT_BOX_CHARS */
#if OPT_RENDERFONT
/*
* Check if the glyph is defined in the given font, and (try to) filter out
* cases where double-width glyphs are stuffed into a single-width outline.
*/
static Boolean
foundXftGlyph(XtermWidget xw, XftFont *font, unsigned wc)
{
TScreen *screen = TScreenOf(xw);
Boolean result = False;
if (font != 0 && XftGlyphExists(screen->display, font, wc)) {
int expect;
if ((expect = CharWidth(wc)) > 0) {
XGlyphInfo gi;
int actual;
XftTextExtents32(screen->display, font, &wc, 1, &gi);
/*
* Some (more than a few) fonts are sloppy; allow 10% outside
* the bounding box to accommodate them.
*/
actual = ((gi.xOff * 10) >= (11 * FontWidth(screen))) ? 2 : 1;
if (actual <= expect) {
/* allow double-cell if wcwidth agrees */
result = True;
} else {
TRACE(("SKIP U+%04X %d vs %d (%d vs %d)\n",
wc, gi.xOff, FontWidth(screen), actual, expect));
}
} else {
result = True;
}
}
return result;
}
static void
markXftOpened(XtermWidget xw, XTermXftFonts *which, Cardinal n, unsigned wc)
{
if (which->cache[n].usage != xcOpened) {
which->opened++;
which->cache[n].usage = xcOpened;
/* XFT_DEBUG=3 will show useful context for this */
if (getenv("XFT_DEBUG") != 0) {
printf("xterm: matched U+%04X in fontset #%d [%u:%u]\n",
wc, n + 1,
which->opened,
xw->work.max_fontsets);
}
}
}
XftFont *
findXftGlyph(XtermWidget xw, XftFont *given, unsigned wc)
{
TScreen *screen = TScreenOf(xw);
XTermXftFonts *which = 0;
XftFont *result = 0;
/* workaround for interface changes... */
int fontnum = screen->menu_font_number;
static int table[] =
{
offsetof(TScreen, renderFontNorm),
offsetof(TScreen, renderFontBold),
offsetof(TScreen, renderFontItal),
offsetof(TScreen, renderFontBtal),
#if OPT_RENDERWIDE
offsetof(TScreen, renderWideNorm),
offsetof(TScreen, renderWideBold),
offsetof(TScreen, renderWideItal),
offsetof(TScreen, renderWideBtal),
#endif
};
Cardinal n;
FcResult status;
const char *tag = 0;
/* if fontsets are not wanted, just leave */
if (xw->work.max_fontsets == 0) {
return 0;
}
/* ignore codes in private use areas */
if ((wc >= 0xe000 && wc <= 0xf8ff)
|| (wc >= 0xf0000 && wc <= 0xffffd)
|| (wc >= 0x100000 && wc <= 0x10fffd)) {
return 0;
}
/* the end of the BMP is reserved for non-characters */
if (wc >= 0xfff0 && wc <= 0xffff) {
return 0;
}
for (n = 0; n < XtNumber(table); ++n) {
XTermXftFonts *check = (XTermXftFonts *) ((void *) ((char *) screen
+ table[n]));
if (check[fontnum].font == given) {
which = &check[fontnum];
tag = whichFontEnum(n);
break;
}
}
if (which != 0) {
if (which->fontset == 0) {
FcFontSet *sortedFonts;
FcPattern *myPattern;
int j;
myPattern = FcPatternDuplicate(which->pattern);
FcPatternAddBool(myPattern, FC_SCALABLE, FcTrue);
FcPatternAddInteger(myPattern, FC_CHAR_WIDTH, given->max_advance_width);
FcConfigSubstitute(FcConfigGetCurrent(),
myPattern,
FcMatchPattern);
FcDefaultSubstitute(myPattern);
which->fontset = FcFontSetCreate();
sortedFonts = FcFontSort(0, myPattern, FcTrue, 0, &status);
if (!sortedFonts || sortedFonts->nfont <= 0) {
xtermWarning("did not find any usable TrueType font\n");
return 0;
}
which->limit = (unsigned) sortedFonts->nfont;
which->cache = TypeCallocN(XTermXftCache, (which->limit + 1));
for (j = 0; j < sortedFonts->nfont; j++) {
FcPattern *font_pattern;
font_pattern = FcFontRenderPrepare(FcConfigGetCurrent(),
myPattern,
sortedFonts->fonts[j]);
if (font_pattern)
FcFontSetAdd(which->fontset, font_pattern);
}
FcFontSetSortDestroy(sortedFonts);
FcPatternDestroy(myPattern);
}
if (which->fontset != 0) {
XftFont *check;
Cardinal empty = which->limit;
for (n = 0; n < which->limit; ++n) {
XftCache usage = which->cache[n].usage;
if (usage == xcEmpty) {
if (empty > n)
empty = n;
} else if (usage == xcOpened
|| (usage == xcUnused
&& (which->opened < xw->work.max_fontsets))) {
check = which->cache[n].font;
if (foundXftGlyph(xw, check, wc)) {
markXftOpened(xw, which, n, wc);
result = check;
TRACE_FALLBACK(xw, "old", wc, (int) n, result);
break;
}
}
}
if ((result == 0)
&& (empty < which->limit)
&& (which->opened < xw->work.max_fontsets)) {
FcPattern *myPattern = 0;
FcPattern *myReport = 0;
for (n = empty; n < which->limit; ++n) {
if (which->cache[n].usage >= xcBogus)
continue;
if (resource.reportFonts) {
myReport = FcPatternDuplicate(which->fontset->fonts[n]);
}
myPattern = FcPatternDuplicate(which->fontset->fonts[n]);
check = XftFontOpenPattern(screen->display, myPattern);
closeCachedXft(screen, which->cache[n].font);
(void) maybeXftCache(xw, check);
which->cache[n].font = check;
which->cache[n].usage = xcBogus;
if (check == 0)
continue; /* shouldn't happen... */
#ifdef FC_COLOR
if (isBogusXft(check)) {
continue;
}
#endif
if (foundXftGlyph(xw, check, wc)) {
markXftOpened(xw, which, n, wc);
reportXftFonts(xw, check, "fallback", tag, myReport);
result = check;
TRACE_FALLBACK(xw, "new", wc, (int) n, result);
break;
}
/*
* The slot is opened, but we are not using it.
*/
which->cache[n].usage = xcUnused;
}
}
}
}
return result;
}
/*
* Check if the given character has a glyph known to Xft. If it is missing,
* try first to replace the font with a fallback that provides the glyph.
* If it is unable to provide a font containing the glyph, return true.
*
* see xc/lib/Xft/xftglyphs.c
*/
Bool
xtermXftMissing(XtermWidget xw, XftFont *font, unsigned wc)
{
Bool result = False;
if (font != 0) {
TScreen *screen = TScreenOf(xw);
if (!XftGlyphExists(screen->display, font, wc)) {
#if OPT_WIDE_CHARS
TRACE2(("xtermXftMissing %d (dec=%#x, ucs=%#x)\n",
wc, ucs2dec(screen, wc), dec2ucs(screen, wc)));
#else
TRACE2(("xtermXftMissing %d\n", wc));
#endif
result = True;
}
}
return result;
}
#endif /* OPT_RENDERFONT */
#if OPT_WIDE_CHARS
#define MY_UCS(ucs,dec) case ucs: result = dec; break
unsigned
ucs2dec(TScreen *screen, unsigned ch)
{
unsigned result = ch;
if ((ch > 127)
&& (ch != UCS_REPL)) {
#if OPT_VT52_MODE
if (screen != 0 && !(screen->vtXX_level)) {
/*
* Intentionally empty: it would be possible to use the built-in
* line-drawing fallback in xtermDrawBoxChar(), but for testing
* ncurses, this is good enough.
*/
;
} else
#endif
switch (ch) {
MY_UCS(0x25ae, 0); /* black vertical rectangle */
MY_UCS(0x25c6, 1); /* black diamond */
MY_UCS(0x2592, 2); /* medium shade */
MY_UCS(0x2409, 3); /* symbol for horizontal tabulation */
MY_UCS(0x240c, 4); /* symbol for form feed */
MY_UCS(0x240d, 5); /* symbol for carriage return */
MY_UCS(0x240a, 6); /* symbol for line feed */
MY_UCS(0x00b0, 7); /* degree sign */
MY_UCS(0x00b1, 8); /* plus-minus sign */
MY_UCS(0x2424, 9); /* symbol for newline */
MY_UCS(0x240b, 10); /* symbol for vertical tabulation */
MY_UCS(0x2518, 11); /* box drawings light up and left */
MY_UCS(0x2510, 12); /* box drawings light down and left */
MY_UCS(0x250c, 13); /* box drawings light down and right */
MY_UCS(0x2514, 14); /* box drawings light up and right */
MY_UCS(0x253c, 15); /* box drawings light vertical and horizontal */
MY_UCS(0x23ba, 16); /* box drawings scan 1 */
MY_UCS(0x23bb, 17); /* box drawings scan 3 */
MY_UCS(0x2500, 18); /* box drawings light horizontal */
MY_UCS(0x23bc, 19); /* box drawings scan 7 */
MY_UCS(0x23bd, 20); /* box drawings scan 9 */
MY_UCS(0x251c, 21); /* box drawings light vertical and right */
MY_UCS(0x2524, 22); /* box drawings light vertical and left */
MY_UCS(0x2534, 23); /* box drawings light up and horizontal */
MY_UCS(0x252c, 24); /* box drawings light down and horizontal */
MY_UCS(0x2502, 25); /* box drawings light vertical */
MY_UCS(0x2264, 26); /* less-than or equal to */
MY_UCS(0x2265, 27); /* greater-than or equal to */
MY_UCS(0x03c0, 28); /* greek small letter pi */
MY_UCS(0x2260, 29); /* not equal to */
MY_UCS(0x00a3, 30); /* pound sign */
MY_UCS(0x00b7, 31); /* middle dot */
}
}
return result;
}
#undef MY_UCS
#define MY_UCS(ucs,dec) case dec: result = ucs; break
unsigned
dec2ucs(TScreen *screen, unsigned ch)
{
unsigned result = ch;
if (xtermIsDecGraphic(ch)) {
#if OPT_VT52_MODE
if (screen != 0 && !(screen->vtXX_level)) {
switch (ch) {
MY_UCS(0x0020, 0); /* nbsp, treat as blank */
MY_UCS(0x0020, 1); /* reserved, treat as blank */
MY_UCS(0x25ae, 2); /* black vertical rectangle */
MY_UCS(0x215f, 3); /* "1/" */
MY_UCS(0x0020, 4); /* "3/", not in Unicode, ignore */
MY_UCS(0x0020, 5); /* "5/", not in Unicode, ignore */
MY_UCS(0x0020, 6); /* "7/", not in Unicode, ignore */
MY_UCS(0x00b0, 7); /* degree sign */
MY_UCS(0x00b1, 8); /* plus-minus sign */
MY_UCS(0x2192, 9); /* right-arrow */
MY_UCS(0x2026, 10); /* ellipsis */
MY_UCS(0x00f7, 11); /* divide by */
MY_UCS(0x2193, 12); /* down arrow */
MY_UCS(0x23ba, 13); /* bar at scan 0 */
MY_UCS(0x23ba, 14); /* bar at scan 1 */
MY_UCS(0x23bb, 15); /* bar at scan 2 */
MY_UCS(0x23bb, 16); /* bar at scan 3 */
MY_UCS(0x23bc, 17); /* bar at scan 4 */
MY_UCS(0x23bc, 18); /* bar at scan 5 */
MY_UCS(0x23bd, 19); /* bar at scan 6 */
MY_UCS(0x23bd, 20); /* bar at scan 7 */
MY_UCS(0x2080, 21); /* subscript 0 */
MY_UCS(0x2081, 22); /* subscript 1 */
MY_UCS(0x2082, 23); /* subscript 2 */
MY_UCS(0x2083, 24); /* subscript 3 */
MY_UCS(0x2084, 25); /* subscript 4 */
MY_UCS(0x2085, 26); /* subscript 5 */
MY_UCS(0x2086, 27); /* subscript 6 */
MY_UCS(0x2087, 28); /* subscript 7 */
MY_UCS(0x2088, 29); /* subscript 8 */
MY_UCS(0x2089, 30); /* subscript 9 */
MY_UCS(0x00b6, 31); /* paragraph */
}
} else
#endif
switch (ch) {
MY_UCS(0x25ae, 0); /* black vertical rectangle */
MY_UCS(0x25c6, 1); /* black diamond */
MY_UCS(0x2592, 2); /* medium shade */
MY_UCS(0x2409, 3); /* symbol for horizontal tabulation */
MY_UCS(0x240c, 4); /* symbol for form feed */
MY_UCS(0x240d, 5); /* symbol for carriage return */
MY_UCS(0x240a, 6); /* symbol for line feed */
MY_UCS(0x00b0, 7); /* degree sign */
MY_UCS(0x00b1, 8); /* plus-minus sign */
MY_UCS(0x2424, 9); /* symbol for newline */
MY_UCS(0x240b, 10); /* symbol for vertical tabulation */
MY_UCS(0x2518, 11); /* box drawings light up and left */
MY_UCS(0x2510, 12); /* box drawings light down and left */
MY_UCS(0x250c, 13); /* box drawings light down and right */
MY_UCS(0x2514, 14); /* box drawings light up and right */
MY_UCS(0x253c, 15); /* box drawings light vertical and horizontal */
MY_UCS(0x23ba, 16); /* box drawings scan 1 */
MY_UCS(0x23bb, 17); /* box drawings scan 3 */
MY_UCS(0x2500, 18); /* box drawings light horizontal */
MY_UCS(0x23bc, 19); /* box drawings scan 7 */
MY_UCS(0x23bd, 20); /* box drawings scan 9 */
MY_UCS(0x251c, 21); /* box drawings light vertical and right */
MY_UCS(0x2524, 22); /* box drawings light vertical and left */
MY_UCS(0x2534, 23); /* box drawings light up and horizontal */
MY_UCS(0x252c, 24); /* box drawings light down and horizontal */
MY_UCS(0x2502, 25); /* box drawings light vertical */
MY_UCS(0x2264, 26); /* less-than or equal to */
MY_UCS(0x2265, 27); /* greater-than or equal to */
MY_UCS(0x03c0, 28); /* greek small letter pi */
MY_UCS(0x2260, 29); /* not equal to */
MY_UCS(0x00a3, 30); /* pound sign */
MY_UCS(0x00b7, 31); /* middle dot */
}
}
return result;
}
#endif /* OPT_WIDE_CHARS */
#if OPT_RENDERFONT || OPT_SHIFT_FONTS
static int
lookupOneFontSize(XtermWidget xw, int fontnum)
{
TScreen *screen = TScreenOf(xw);
if (screen->menu_font_sizes[fontnum] == 0) {
XTermFonts fnt;
memset(&fnt, 0, sizeof(fnt));
screen->menu_font_sizes[fontnum] = -1;
if (xtermOpenFont(xw, screen->MenuFontName(fontnum), &fnt, True)) {
if (fontnum <= fontMenu_lastBuiltin
|| strcmp(fnt.fn, DEFFONT)) {
screen->menu_font_sizes[fontnum] = FontSize(fnt.fs);
if (screen->menu_font_sizes[fontnum] <= 0)
screen->menu_font_sizes[fontnum] = -1;
}
xtermCloseFont(xw, &fnt);
}
}
return (screen->menu_font_sizes[fontnum] > 0);
}
/*
* Cache the font-sizes so subsequent larger/smaller font actions will go fast.
*/
static void
lookupFontSizes(XtermWidget xw)
{
int n;
for (n = 0; n < NMENUFONTS; n++) {
(void) lookupOneFontSize(xw, n);
}
}
#endif /* OPT_RENDERFONT || OPT_SHIFT_FONTS */
#if OPT_RENDERFONT
static double
defaultFaceSize(void)
{
double result;
float value;
if (sscanf(DEFFACESIZE, "%f", &value) == 1)
result = value;
else
result = 14.0;
return result;
}
static void
fillInFaceSize(XtermWidget xw, int fontnum)
{
TScreen *screen = TScreenOf(xw);
double face_size = xw->misc.face_size[fontnum];
if (face_size <= 0.0) {
#if OPT_SHIFT_FONTS
/*
* If the user is switching font-sizes, make it follow by
* default the same ratios to the default as the fixed fonts
* would, for easy comparison. There will be some differences
* since the fixed fonts have a variety of height/width ratios,
* but this is simpler than adding another resource value - and
* as noted above, the data for the fixed fonts are available.
*/
(void) lookupOneFontSize(xw, 0);
if (fontnum == fontMenu_default) {
face_size = defaultFaceSize();
} else if (lookupOneFontSize(xw, fontnum)
&& (screen->menu_font_sizes[0]
!= screen->menu_font_sizes[fontnum])) {
double ratio;
long num = screen->menu_font_sizes[fontnum];
long den = screen->menu_font_sizes[0];
if (den <= 0)
den = 1;
ratio = dimSquareRoot((double) num / (double) den);
face_size = (ratio * xw->misc.face_size[0]);
TRACE(("scaled[%d] using %3ld/%ld = %.2f -> %f\n",
fontnum, num, den, ratio, face_size));
} else
#endif
{
#define LikeBitmap(s) (((s) / 78.0) * xw->misc.face_size[fontMenu_default])
switch (fontnum) {
case fontMenu_font1:
face_size = LikeBitmap(2.0);
break;
case fontMenu_font2:
face_size = LikeBitmap(35.0);
break;
case fontMenu_font3:
face_size = LikeBitmap(60.0);
break;
default:
face_size = defaultFaceSize();
break;
case fontMenu_font4:
face_size = LikeBitmap(90.0);
break;
case fontMenu_font5:
face_size = LikeBitmap(135.0);
break;
case fontMenu_font6:
face_size = LikeBitmap(200.0);
break;
}
TRACE(("builtin[%d] -> %f\n", fontnum, face_size));
}
xw->misc.face_size[fontnum] = (float) face_size;
}
}
/* no selection or escape */
#define NMENU_RENDERFONTS (fontMenu_lastBuiltin + 1)
/*
* Workaround for breakage in font-packages - check if all of the bitmap font
* sizes are the same, and if we're using TrueType fonts.
*/
static Boolean
useFaceSizes(XtermWidget xw)
{
Boolean result = False;
TRACE(("useFaceSizes {{\n"));
if (UsingRenderFont(xw)) {
Boolean nonzero = True;
int n;
for (n = 0; n < NMENU_RENDERFONTS; ++n) {
if (xw->misc.face_size[n] <= 0.0) {
nonzero = False;
break;
}
}
if (!nonzero) {
Boolean broken_fonts = True;
TScreen *screen = TScreenOf(xw);
long first;
lookupFontSizes(xw);
first = screen->menu_font_sizes[0];
for (n = 0; n < NMENUFONTS; n++) {
if (screen->menu_font_sizes[n] > 0
&& screen->menu_font_sizes[n] != first) {
broken_fonts = False;
break;
}
}
if (broken_fonts) {
TRACE(("bitmap fonts are broken - set faceSize resources\n"));
for (n = 0; n < NMENUFONTS; n++) {
fillInFaceSize(xw, n);
}
}
}
result = True;
}
TRACE(("...}}useFaceSizes %d\n", result));
return result;
}
#endif /* OPT_RENDERFONT */
#if OPT_SHIFT_FONTS
/*
* Find the index of a larger/smaller font (according to the sign of 'relative'
* and its magnitude), starting from the 'old' index.
*/
int
lookupRelativeFontSize(XtermWidget xw, int old, int relative)
{
TScreen *screen = TScreenOf(xw);
int m = -1;
TRACE(("lookupRelativeFontSize(old=%d, relative=%d)\n", old, relative));
if (!IsIcon(screen)) {
#if OPT_RENDERFONT
if (useFaceSizes(xw)) {
TRACE(("...using FaceSize\n"));
if (relative != 0) {
int n;
for (n = 0; n < NMENU_RENDERFONTS; ++n) {
fillInFaceSize(xw, n);
if (xw->misc.face_size[n] > 0 &&
xw->misc.face_size[n] != xw->misc.face_size[old]) {
int cmp_0 = ((xw->misc.face_size[n] >
xw->misc.face_size[old])
? relative
: -relative);
int cmp_m = ((m < 0)
? 1
: ((xw->misc.face_size[n] <
xw->misc.face_size[m])
? relative
: -relative));
if (cmp_0 > 0 && cmp_m > 0) {
m = n;
}
}
}
}
} else
#endif
{
TRACE(("...using bitmap areas\n"));
lookupFontSizes(xw);
if (relative != 0) {
int n;
for (n = 0; n < NMENUFONTS; ++n) {
if (screen->menu_font_sizes[n] > 0 &&
screen->menu_font_sizes[n] !=
screen->menu_font_sizes[old]) {
int cmp_0 = ((screen->menu_font_sizes[n] >
screen->menu_font_sizes[old])
? relative
: -relative);
int cmp_m = ((m < 0)
? 1
: ((screen->menu_font_sizes[n] <
screen->menu_font_sizes[m])
? relative
: -relative));
if (cmp_0 > 0 && cmp_m > 0) {
m = n;
}
}
}
}
}
TRACE(("...new index %d\n", m));
if (m >= 0) {
if (relative > 1)
m = lookupRelativeFontSize(xw, m, relative - 1);
else if (relative < -1)
m = lookupRelativeFontSize(xw, m, relative + 1);
}
}
return m;
}
/* ARGSUSED */
void
HandleLargerFont(Widget w GCC_UNUSED,
XEvent *event GCC_UNUSED,
String *params GCC_UNUSED,
Cardinal *param_count GCC_UNUSED)
{
XtermWidget xw;
TRACE(("Handle larger-vt-font for %p\n", (void *) w));
if ((xw = getXtermWidget(w)) != 0) {
if (xw->misc.shift_fonts) {
TScreen *screen = TScreenOf(xw);
int m;
m = lookupRelativeFontSize(xw, screen->menu_font_number, 1);
if (m >= 0) {
SetVTFont(xw, m, True, NULL);
} else {
Bell(xw, XkbBI_MinorError, 0);
}
}
}
}
/* ARGSUSED */
void
HandleSmallerFont(Widget w GCC_UNUSED,
XEvent *event GCC_UNUSED,
String *params GCC_UNUSED,
Cardinal *param_count GCC_UNUSED)
{
XtermWidget xw;
TRACE(("Handle smaller-vt-font for %p\n", (void *) w));
if ((xw = getXtermWidget(w)) != 0) {
if (xw->misc.shift_fonts) {
TScreen *screen = TScreenOf(xw);
int m;
m = lookupRelativeFontSize(xw, screen->menu_font_number, -1);
if (m >= 0) {
SetVTFont(xw, m, True, NULL);
} else {
Bell(xw, XkbBI_MinorError, 0);
}
}
}
}
#endif /* OPT_SHIFT_FONTS */
int
xtermGetFont(const char *param)
{
int fontnum;
switch (param[0]) {
case 'd':
case 'D':
case '0':
fontnum = fontMenu_default;
break;
case '1':
fontnum = fontMenu_font1;
break;
case '2':
fontnum = fontMenu_font2;
break;
case '3':
fontnum = fontMenu_font3;
break;
case '4':
fontnum = fontMenu_font4;
break;
case '5':
fontnum = fontMenu_font5;
break;
case '6':
fontnum = fontMenu_font6;
break;
case 'e':
case 'E':
fontnum = fontMenu_fontescape;
break;
case 's':
case 'S':
fontnum = fontMenu_fontsel;
break;
default:
fontnum = -1;
break;
}
return fontnum;
}
/* ARGSUSED */
void
HandleSetFont(Widget w GCC_UNUSED,
XEvent *event GCC_UNUSED,
String *params,
Cardinal *param_count)
{
XtermWidget xw;
if ((xw = getXtermWidget(w)) != 0) {
int fontnum;
VTFontNames fonts;
memset(&fonts, 0, sizeof(fonts));
if (*param_count == 0) {
fontnum = fontMenu_default;
} else {
Cardinal maxparams = 1; /* total number of params allowed */
int result = xtermGetFont(params[0]);
switch (result) {
case fontMenu_default: /* FALLTHRU */
case fontMenu_font1: /* FALLTHRU */
case fontMenu_font2: /* FALLTHRU */
case fontMenu_font3: /* FALLTHRU */
case fontMenu_font4: /* FALLTHRU */
case fontMenu_font5: /* FALLTHRU */
case fontMenu_font6: /* FALLTHRU */
break;
case fontMenu_fontescape:
#if OPT_WIDE_CHARS
maxparams = 5;
#else
maxparams = 3;
#endif
break;
case fontMenu_fontsel:
maxparams = 2;
break;
default:
Bell(xw, XkbBI_MinorError, 0);
return;
}
fontnum = result;
if (*param_count > maxparams) { /* see if extra args given */
Bell(xw, XkbBI_MinorError, 0);
return;
}
switch (*param_count) { /* assign 'em */
#if OPT_WIDE_CHARS
case 5:
fonts.f_wb = x_strdup(params[4]);
/* FALLTHRU */
case 4:
fonts.f_w = x_strdup(params[3]);
#endif
/* FALLTHRU */
case 3:
fonts.f_b = x_strdup(params[2]);
/* FALLTHRU */
case 2:
fonts.f_n = x_strdup(params[1]);
break;
}
}
SetVTFont(xw, fontnum, True, &fonts);
}
}
void
SetVTFont(XtermWidget xw,
int which,
Bool doresize,
const VTFontNames * fonts)
{
TScreen *screen = TScreenOf(xw);
TRACE(("SetVTFont(which=%d, f_n=%s, f_b=%s)\n", which,
(fonts && fonts->f_n) ? fonts->f_n : "<null>",
(fonts && fonts->f_b) ? fonts->f_b : "<null>"));
if (IsIcon(screen)) {
Bell(xw, XkbBI_MinorError, 0);
} else if (which >= 0 && which < NMENUFONTS) {
VTFontNames myfonts;
memset(&myfonts, 0, sizeof(myfonts));
if (fonts != 0)
myfonts = *fonts;
if (which == fontMenu_fontsel) { /* go get the selection */
FindFontSelection(xw, myfonts.f_n, False);
} else {
int oldFont = screen->menu_font_number;
#define USE_CACHED(field, name) \
if (myfonts.field == 0) { \
myfonts.field = x_strdup(screen->menu_font_names[which][name]); \
TRACE(("set myfonts." #field " from menu_font_names[%d][" #name "] %s\n", \
which, NonNull(myfonts.field))); \
} else { \
TRACE(("set myfonts." #field " reused\n")); \
}
#define SAVE_FNAME(field, name) \
if (myfonts.field != 0) { \
if (screen->menu_font_names[which][name] == 0 \
|| strcmp(screen->menu_font_names[which][name], myfonts.field)) { \
TRACE(("updating menu_font_names[%d][" #name "] to %s\n", \
which, myfonts.field)); \
FREE_STRING(screen->menu_font_names[which][name]); \
screen->menu_font_names[which][name] = x_strdup(myfonts.field); \
} \
}
USE_CACHED(f_n, fNorm);
USE_CACHED(f_b, fBold);
#if OPT_WIDE_CHARS
USE_CACHED(f_w, fWide);
USE_CACHED(f_wb, fWBold);
#endif
if (xtermLoadFont(xw,
&myfonts,
doresize, which)) {
/*
* If successful, save the data so that a subsequent query via
* OSC-50 will return the expected values.
*/
SAVE_FNAME(f_n, fNorm);
SAVE_FNAME(f_b, fBold);
#if OPT_WIDE_CHARS
SAVE_FNAME(f_w, fWide);
SAVE_FNAME(f_wb, fWBold);
#endif
} else {
(void) xtermLoadFont(xw,
xtermFontName(screen->MenuFontName(oldFont)),
doresize, oldFont);
Bell(xw, XkbBI_MinorError, 0);
}
FREE_FNAME(f_n);
FREE_FNAME(f_b);
#if OPT_WIDE_CHARS
FREE_FNAME(f_w);
FREE_FNAME(f_wb);
#endif
}
} else {
Bell(xw, XkbBI_MinorError, 0);
}
return;
}
#if OPT_RENDERFONT
static void
trimSizeFromFace(char *face_name, float *face_size)
{
char *first = strstr(face_name, ":size=");
if (first == 0) {
first = face_name;
} else {
first++;
}
if (!strncmp(first, "size=", (size_t) 5)) {
char *last = strchr(first, ':');
char mark;
float value;
char extra;
TRACE(("...before trimming, font = \"%s\"\n", face_name));
if (last == 0)
last = first + strlen(first);
mark = *last;
*last = '\0';
if (sscanf(first, "size=%g%c", &value, &extra) == 1) {
TRACE(("...trimmed size from font: %g\n", value));
if (face_size != 0)
*face_size = value;
}
if (mark) {
while ((*first++ = *++last) != '\0') {
;
}
} else {
if (first != face_name)
--first;
*first = '\0';
}
TRACE(("...after trimming, font = \"%s\"\n", face_name));
}
}
#endif
/*
* Save a font specification to the proper list.
*/
static void
save2FontList(XtermWidget xw,
const char *name,
XtermFontNames * fontnames,
VTFontEnum which,
const char *source,
Bool ttf)
{
char *value;
size_t plen;
Bool marked = False;
Bool use_ttf = ttf;
(void) xw;
if (source == 0)
source = "";
while (isspace(CharOf(*source)))
++source;
/* fontconfig patterns can contain ':' separators, but we'll treat
* a leading prefix specially to denote whether the pattern might be
* XLFD ("x" or "xlfd") versus Xft ("xft").
*/
for (plen = 0; source[plen] != '\0'; ++plen) {
if (source[plen] == ':') {
marked = True;
switch (plen) {
case 0:
++plen; /* trim leading ':' */
break;
case 1:
if (!strncmp(source, "x", plen)) {
++plen;
use_ttf = False;
} else {
marked = False;
}
break;
case 3:
if (!strncmp(source, "xft", plen)) {
++plen;
use_ttf = True;
} else {
marked = False;
}
break;
case 4:
if (!strncmp(source, "xlfd", plen)) {
++plen;
use_ttf = False;
} else {
marked = False;
}
break;
default:
marked = False;
plen = 0;
break;
}
break;
}
}
if (!marked)
plen = 0;
value = x_strtrim(source + plen);
if (value != 0) {
Bool success = False;
#if OPT_RENDERFONT
VTFontList *target = (use_ttf
? &(fontnames->xft)
: &(fontnames->x11));
#else
VTFontList *target = &(fontnames->x11);
#endif
char ***list = 0;
char **next = 0;
size_t count = 0;
(void) use_ttf;
switch (which) {
case fNorm:
list = &(target->list_n);
break;
case fBold:
list = &(target->list_b);
break;
#if OPT_WIDE_ATTRS || OPT_RENDERWIDE
case fItal:
list = &(target->list_i);
break;
case fBtal:
list = &(target->list_bi);
break;
#endif
#if OPT_WIDE_CHARS
case fWide:
list = &(target->list_w);
break;
case fWBold:
list = &(target->list_wb);
break;
case fWItal:
list = &(target->list_wi);
break;
case fWBtal:
list = &(target->list_wbi);
break;
#endif
case fMAX:
list = 0;
break;
}
if (list != 0) {
success = True;
if (*list != 0) {
while ((*list)[count] != 0) {
if (IsEmpty((*list)[count])) {
TRACE(("... initial %s\n", value));
free((*list)[count]);
break;
} else if (!strcmp(value, (*list)[count])) {
TRACE(("... duplicate %s\n", value));
success = False;
break;
}
++count;
}
}
if (success) {
next = realloc(*list, sizeof(char *) * (count + 2));
if (next != 0) {
#if OPT_RENDERFONT
if (use_ttf) {
trimSizeFromFace(value,
(count == 0 && which == fNorm)
? &(xw->misc.face_size[0])
: (float *) 0);
}
#endif
next[count++] = value;
next[count] = 0;
*list = next;
TRACE(("... saved %s %s %lu:%s\n",
whichFontList(xw, target),
whichFontList2(xw, *list),
(unsigned long) count,
value));
} else {
fprintf(stderr,
"realloc failure in save2FontList(%s)\n",
name);
freeFontList(list);
success = False;
}
}
}
if (success) {
#if (MAX_XFT_FONTS == MAX_XLFD_FONTS)
size_t limit = MAX_XFT_FONTS;
#else
size_t limit = use_ttf ? MAX_XFT_FONTS : MAX_XLFD_FONTS;
#endif
if (count > limit && *x_skip_blanks(value)) {
fprintf(stderr, "%s: too many fonts for %s, ignoring %s\n",
ProgramName,
whichFontEnum(which),
value);
if (list && *list) {
free((*list)[limit]);
(*list)[limit] = 0;
}
}
} else {
free(value);
}
}
}
/*
* In principle, any of the font-name resources could be extended to be a list
* of font-names. That would be bad for performance, but as a basis for an
* extension, parse the font-name as a comma-separated list, creating/updating
* an array of font-names.
*/
void
allocFontList(XtermWidget xw,
const char *name,
XtermFontNames * target,
VTFontEnum which,
const char *source,
Bool ttf)
{
char *blob;
blob = x_strdup(source);
if (blob != 0) {
int n;
int pass;
char **list = 0;
TRACE(("allocFontList %s %s '%s'\n", whichFontEnum(which), name, blob));
for (pass = 0; pass < 2; ++pass) {
unsigned count = 0;
if (pass)
list[0] = blob;
for (n = 0; blob[n] != '\0'; ++n) {
if (blob[n] == ',') {
++count;
if (pass != 0) {
blob[n] = '\0';
list[count] = blob + n + 1;
}
}
}
if (!pass) {
if (count == 0 && *blob == '\0')
break;
list = TypeCallocN(char *, count + 2);
if (list == 0)
break;
}
}
if (list) {
for (n = 0; list[n] != 0; ++n) {
if (*list[n]) {
save2FontList(xw, name, target, which, list[n], ttf);
}
}
free(list);
}
}
free(blob);
}
static void
initFontList(XtermWidget xw,
const char *name,
XtermFontNames * target,
Bool ttf)
{
int which;
TRACE(("initFontList(%s)\n", name));
for (which = 0; which < fMAX; ++which) {
save2FontList(xw, name, target, (VTFontEnum) which, "", ttf);
}
}
void
initFontLists(XtermWidget xw)
{
TRACE(("initFontLists\n"));
initFontList(xw, "x11 font", &(xw->work.fonts), False);
#if OPT_RENDERFONT
initFontList(xw, "xft font", &(xw->work.fonts), True);
#endif
#if OPT_LOAD_VTFONTS || OPT_WIDE_CHARS
initFontList(xw, "cached font",
&(xw->screen.cacheVTFonts.fonts), False);
#endif
}
void
copyFontList(char ***targetp, char **source)
{
freeFontList(targetp);
if (source != 0) {
int pass;
size_t count;
for (pass = 0; pass < 2; ++pass) {
for (count = 0; source[count] != 0; ++count) {
if (pass)
(*targetp)[count] = x_strdup(source[count]);
}
if (!pass) {
++count;
*targetp = TypeCallocN(char *, count);
}
}
} else {
*targetp = TypeCallocN(char *, 2);
(*targetp)[0] = x_strdup("");
}
}
#if OPT_LOAD_VTFONTS || OPT_WIDE_CHARS
static Boolean
merge_sublist(char ***targetp, char **source)
{
Boolean result = False;
if ((*targetp == 0 || IsEmpty(**targetp)) && !IsEmpty(*source)) {
copyFontList(targetp, source);
result = True;
}
return result;
}
#endif
void
freeFontList(char ***targetp)
{
if (targetp != 0) {
char **target = *targetp;
if (target != 0) {
int n;
for (n = 0; target[n] != 0; ++n) {
free(target[n]);
}
free(target);
*targetp = 0;
}
}
}
void
freeFontLists(VTFontList * lists)
{
int which;
TRACE(("freeFontLists\n"));
for (which = 0; which < fMAX; ++which) {
char ***target = 0;
switch (which) {
case fNorm:
target = &(lists->list_n);
break;
case fBold:
target = &(lists->list_b);
break;
#if OPT_WIDE_ATTRS || OPT_RENDERWIDE
case fItal:
target = &(lists->list_i);
break;
case fBtal:
target = &(lists->list_bi);
break;
#endif
#if OPT_WIDE_CHARS
case fWide:
target = &(lists->list_w);
break;
case fWBold:
target = &(lists->list_wb);
break;
case fWItal:
target = &(lists->list_wi);
break;
case fWBtal:
target = &(lists->list_wbi);
break;
#endif
default:
target = 0;
break;
}
freeFontList(target);
}
}
/*
* Return a pointer to the XLFD font information for a given font class.
* XXX make this allocate the font on demand.
*/
XTermFonts *
getNormalFont(TScreen *screen, int which)
{
XTermFonts *result = 0;
if (which >= 0 && which < fMAX)
result = GetNormalFont(screen, which);
return result;
}
#if OPT_DEC_CHRSET
XTermFonts *
getDoubleFont(TScreen *screen, int which)
{
XTermFonts *result = 0;
if ((int) which >= 0 && which < NUM_CHRSET)
result = GetDoubleFont(screen, which);
return result;
}
#if OPT_RENDERFONT
XftFont *
getDoubleXftFont(XTermDraw * params, unsigned chrset, unsigned attr_flags)
{
XftFont *result = 0;
XtermWidget xw = params->xw;
TScreen *screen = TScreenOf(xw);
XftPattern *top_pattern;
int fontnum = screen->menu_font_number;
const char *face_name = getFaceName(xw, False);
if (chrset != CSET_SWL
&& (top_pattern = XftNameParse(face_name)) != 0) {
double face_size = xw->misc.face_size[fontnum];
XftPattern *sub_pattern = XftPatternDuplicate(top_pattern);
switch (chrset) {
case CSET_DHL_TOP:
/* FALLTHRU */
case CSET_DHL_BOT:
face_size *= 2;
XftPatternBuild(sub_pattern,
NormXftPattern,
(void *) 0);
break;
case CSET_DWL:
XftPatternBuild(sub_pattern,
NormXftPattern,
FC_ASPECT, XftTypeDouble, 2.0,
(void *) 0);
break;
}
if (attr_flags & BOLD) {
XftPatternBuild(sub_pattern,
XFT_WEIGHT, XftTypeInteger, XFT_WEIGHT_BOLD,
(void *) 0);
}
result = xtermOpenXft(xw, face_name, sub_pattern, "doublesize");
}
return result;
}
#endif
#endif /* OPT_DEC_CHRSET */
#if OPT_WIDE_ATTRS || OPT_RENDERWIDE
XTermFonts *
getItalicFont(TScreen *screen, int which)
{
XTermFonts *result = 0;
#if OPT_WIDE_ATTRS
if (which >= 0 && which < fMAX)
result = GetItalicFont(screen, which);
#else
(void) screen;
(void) which;
#endif
return result;
}
#endif
#if OPT_RENDERFONT
/*
* This returns a pointer to everything known about a given Xft font.
* XXX make this allocate the font on demand.
*/
XTermXftFonts *
getMyXftFont(XtermWidget xw, int which, int fontnum)
{
TScreen *screen = TScreenOf(xw);
XTermXftFonts *result = 0;
if (fontnum >= 0 && fontnum < NMENUFONTS) {
switch ((VTFontEnum) which) {
case fNorm:
result = &(screen->renderFontNorm[fontnum]);
break;
case fBold:
result = &(screen->renderFontBold[fontnum]);
break;
#if OPT_WIDE_ATTRS || OPT_RENDERWIDE
case fItal:
result = &(screen->renderFontItal[fontnum]);
break;
case fBtal:
result = &(screen->renderFontBtal[fontnum]);
break;
#endif
#if OPT_WIDE_CHARS
case fWide:
result = &(screen->renderWideNorm[fontnum]);
break;
case fWBold:
result = &(screen->renderWideBold[fontnum]);
break;
case fWItal:
result = &(screen->renderWideItal[fontnum]);
break;
case fWBtal:
result = &(screen->renderWideBtal[fontnum]);
break;
#endif
case fMAX:
break;
}
}
return result;
}
XftFont *
getXftFont(XtermWidget xw, VTFontEnum which, int fontnum)
{
XTermXftFonts *data = getMyXftFont(xw, (int) which, fontnum);
XftFont *result = 0;
if (data != 0)
result = data->font;
return result;
}
#endif
const char *
whichFontEnum(VTFontEnum value)
{
const char *result = "?";
#define DATA(name) case name: result = #name; break
switch (value) {
DATA(fNorm);
DATA(fBold);
#if OPT_WIDE_ATTRS || OPT_RENDERWIDE
DATA(fItal);
DATA(fBtal);
#endif
#if OPT_WIDE_CHARS
DATA(fWide);
DATA(fWBold);
DATA(fWItal);
DATA(fWBtal);
#endif
DATA(fMAX);
}
#undef DATA
return result;
}
const char *
whichFontList(XtermWidget xw, VTFontList * value)
{
const char *result = "?";
if (value == &(xw->work.fonts.x11))
result = "x11_fontnames";
#if OPT_RENDERFONT
else if (value == &(xw->work.fonts.xft))
result = "xft_fontnames";
#endif
#if OPT_LOAD_VTFONTS || OPT_WIDE_CHARS
else if (value == &(xw->screen.cacheVTFonts.fonts.x11))
result = "cached_fontnames";
#endif
return result;
}
static const char *
whichFontList2s(VTFontList * list, char **value)
{
const char *result = 0;
#define DATA(name) if (value == (list->name)) result = #name
DATA(list_n);
DATA(list_b);
#if OPT_WIDE_ATTRS || OPT_RENDERWIDE
DATA(list_i);
DATA(list_bi);
#endif
#if OPT_WIDE_CHARS
DATA(list_w);
DATA(list_wb);
DATA(list_wi);
DATA(list_wbi);
#endif
#undef DATA
return result;
}
const char *
whichFontList2(XtermWidget xw, char **value)
{
const char *result = 0;
#define DATA(name) (result = whichFontList2s(&(xw->name), value))
if (DATA(work.fonts.x11) == 0) {
#if OPT_RENDERFONT
if (DATA(work.fonts.xft) == 0)
#endif
#if OPT_LOAD_VTFONTS || OPT_WIDE_CHARS
if (DATA(screen.cacheVTFonts.fonts.x11) == 0)
#endif
result = "?";
}
#undef DATA
return result;
}
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