old
/
eterm
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
eterm/src/font.c

657 lines
20 KiB
C
Raw Blame History

/*
* Copyright (C) 1997-2000, Michael Jennings
*
* 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 of the Software, its documentation and marketing & publicity
* materials, and acknowledgment shall be given in the documentation, materials
* and software packages that this Software was used.
*
* 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 AUTHORS 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.
*/
static const char cvs_ident[] = "$Id$";
#include "config.h"
#include "feature.h"
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <limits.h>
#include <math.h>
#include "command.h"
#include "font.h"
#include "startup.h"
#include "options.h"
#include "screen.h"
#include "term.h"
#include "windows.h"
char **etfonts = NULL;
unsigned char font_idx = DEF_FONT_IDX, def_font_idx = DEF_FONT_IDX, font_cnt = 0;
char *rs_font[NFONTS];
#ifdef MULTI_CHARSET
char *rs_mfont[NFONTS];
char **etmfonts = NULL;
const char *def_mfontName[] = {MFONT0, MFONT1, MFONT2, MFONT3, MFONT4};
#endif
const char *def_fontName[] = {FONT0, FONT1, FONT2, FONT3, FONT4};
unsigned char font_chg = 0;
fontshadow_t fshadow = { { 0, 0, 0, 0 }, { 0, 0, 0, 1 }, 1 };
static cachefont_t *font_cache = NULL, *cur_font = NULL;
static void font_cache_add(const char *name, unsigned char type, void *info);
static void font_cache_del(const void *info);
static cachefont_t *font_cache_find(const char *name, unsigned char type);
static void *font_cache_find_info(const char *name, unsigned char type);
static unsigned char get_corner(const char *corner);
void
eterm_font_add(char ***plist, const char *fontname, unsigned char idx) {
char **flist;
D_FONT(("Adding \"%s\" at %u (%8p)\n", NONULL(fontname), (unsigned int) idx, plist));
ASSERT(plist != NULL);
flist = *plist;
if (idx >= font_cnt) {
unsigned char new_size = sizeof(char *) * (idx + 1);
if (etfonts) {
etfonts = (char **) REALLOC(etfonts, new_size);
#ifdef MULTI_CHARSET
etmfonts = (char **) REALLOC(etmfonts, new_size);
D_FONT((" -> Reallocated font lists: %u bytes at %8p/%8p\n", new_size, etfonts, etmfonts));
#else
D_FONT((" -> Reallocated font list: %u bytes at %8p\n", new_size, etfonts));
#endif
} else {
etfonts = (char **) MALLOC(new_size);
#ifdef MULTI_CHARSET
etmfonts = (char **) MALLOC(new_size);
D_FONT((" -> Allocated font lists: %u bytes at %8p/%8p\n", new_size, etfonts, etmfonts));
#else
D_FONT((" -> Allocating font list: %u bytes at %8p\n", new_size, etfonts));
#endif
}
MEMSET(etfonts + font_cnt, 0, sizeof(char *) * (idx - font_cnt + 1));
#ifdef MULTI_CHARSET
MEMSET(etmfonts + font_cnt, 0, sizeof(char *) * (idx - font_cnt + 1));
#endif
font_cnt = idx + 1;
#ifdef MULTI_CHARSET
flist = ((plist == &etfonts) ? (etfonts) : (etmfonts));
#else
flist = etfonts;
#endif
} else {
if (flist[idx]) {
if ((flist[idx] == fontname) || (!strcasecmp(flist[idx], fontname))) {
return;
}
FREE(flist[idx]);
}
}
flist[idx] = STRDUP(fontname);
DUMP_FONTS();
}
void
eterm_font_delete(char **flist, unsigned char idx) {
ASSERT(idx < font_cnt);
if (flist[idx]) {
FREE(flist[idx]);
}
flist[idx] = NULL;
}
static void
font_cache_add(const char *name, unsigned char type, void *info) {
cachefont_t *font;
D_FONT(("font_cache_add(%s, %d, %8p) called.\n", NONULL(name), type, info));
font = (cachefont_t *) MALLOC(sizeof(cachefont_t));
font->name = STRDUP(name);
font->type = type;
font->ref_cnt = 1;
switch (type) {
case FONT_TYPE_X: font->fontinfo.xfontinfo = (XFontStruct *) info; break;
case FONT_TYPE_TTF: break;
case FONT_TYPE_FNLIB: break;
default: break;
}
D_FONT((" -> Created new cachefont_t struct at %p: \"%s\", %d, %p\n", font, font->name, font->type, font->fontinfo.xfontinfo));
if (font_cache == NULL) {
font_cache = cur_font = font;
font->next = NULL;
D_FONT((" -> Stored as first font in cache. font_cache == cur_font == font == %p\n", font_cache));
D_FONT((" -> font_cache->next == cur_font->next == font->next == %p\n", font_cache->next));
} else {
D_FONT((" -> font_cache->next == %p, cur_font->next == %p\n", font_cache->next, cur_font->next));
cur_font->next = font;
font->next = NULL;
cur_font = font;
D_FONT((" -> Stored font in cache. font_cache == %p, cur_font == %p\n", font_cache, cur_font));
D_FONT((" -> font_cache->next == %p, cur_font->next == %p\n", font_cache->next, cur_font->next));
}
}
static void
font_cache_del(const void *info) {
cachefont_t *current, *tmp;
D_FONT(("font_cache_del(%8p) called.\n", info));
if (font_cache == NULL) {
return;
}
if (((font_cache->type == FONT_TYPE_X) && (font_cache->fontinfo.xfontinfo == (XFontStruct *) info))) {
D_FONT((" -> Match found at font_cache (%8p). Font name is \"%s\"\n", font_cache, NONULL(font_cache->name)));
if (--(font_cache->ref_cnt) == 0) {
D_FONT((" -> Reference count is now 0. Deleting from cache.\n"));
current = font_cache;
font_cache = current->next;
XFreeFont(Xdisplay, (XFontStruct *) info);
FREE(current->name);
FREE(current);
} else {
D_FONT((" -> Reference count is %d. Returning.\n", font_cache->ref_cnt));
}
return;
} else if ((font_cache->type == FONT_TYPE_TTF) && (0)) {
} else if ((font_cache->type == FONT_TYPE_FNLIB) && (0)) {
} else {
for (current = font_cache; current->next; current = current->next) {
if (((current->next->type == FONT_TYPE_X) && (current->next->fontinfo.xfontinfo == (XFontStruct *) info))) {
D_FONT((" -> Match found at current->next (%8p, current == %8p). Font name is \"%s\"\n", current->next, current, NONULL(current->next->name)));
if (--(current->next->ref_cnt) == 0) {
D_FONT((" -> Reference count is now 0. Deleting from cache.\n"));
tmp = current->next;
current->next = current->next->next;
XFreeFont(Xdisplay, (XFontStruct *) info);
if (cur_font == tmp) {
cur_font = current; /* If we're nuking the last entry in the cache, point cur_font to the *new* last entry. */
}
FREE(tmp->name);
FREE(tmp);
} else {
D_FONT((" -> Reference count is %d. Returning.\n", font_cache->ref_cnt));
}
return;
} else if ((current->next->type == FONT_TYPE_TTF) && (0)) {
} else if ((current->next->type == FONT_TYPE_FNLIB) && (0)) {
}
}
}
}
static cachefont_t *
font_cache_find(const char *name, unsigned char type) {
cachefont_t *current;
ASSERT_RVAL(name != NULL, NULL);
D_FONT(("font_cache_find(%s, %d) called.\n", NONULL(name), type));
for (current = font_cache; current; current = current->next) {
D_FONT((" -> Checking current (%8p), type == %d, name == %s\n", current, current->type, NONULL(current->name)));
if ((current->type == type) && !strcasecmp(current->name, name)) {
D_FONT((" -> Match!\n"));
return (current);
}
}
D_FONT(("No matches found. =(\n"));
return ((cachefont_t *) NULL);
}
static void *
font_cache_find_info(const char *name, unsigned char type) {
cachefont_t *current;
REQUIRE_RVAL(name != NULL, NULL);
D_FONT(("font_cache_find_info(%s, %d) called.\n", NONULL(name), type));
for (current = font_cache; current; current = current->next) {
D_FONT((" -> Checking current (%8p), type == %d, name == %s\n", current, current->type, NONULL(current->name)));
if ((current->type == type) && !strcasecmp(current->name, name)) {
D_FONT((" -> Match!\n"));
switch (type) {
case FONT_TYPE_X: return ((void *) current->fontinfo.xfontinfo); break;
case FONT_TYPE_TTF: return (NULL); break;
case FONT_TYPE_FNLIB: return (NULL); break;
default: return (NULL); break;
}
}
}
D_FONT(("No matches found. =(\n"));
return (NULL);
}
void *
load_font(const char *name, const char *fallback, unsigned char type)
{
cachefont_t *font;
XFontStruct *xfont;
D_FONT(("load_font(%s, %s, %d) called.\n", NONULL(name), NONULL(fallback), type));
if (type == 0) {
type = FONT_TYPE_X;
}
if (name == NULL) {
if (fallback) {
name = fallback;
fallback = "fixed";
} else {
name = "fixed";
#ifdef MULTI_CHARSET
fallback = "-misc-fixed-medium-r-normal--13-120-75-75-c-60-iso10646-1";
#else
fallback = "-misc-fixed-medium-r-normal--13-120-75-75-c-60-iso8859-1";
#endif
}
} else if (fallback == NULL) {
fallback = "fixed";
}
D_FONT((" -> Using name == \"%s\" and fallback == \"%s\"\n", name, fallback));
if ((font = font_cache_find(name, type)) != NULL) {
font_cache_add_ref(font);
D_FONT((" -> Font found in cache. Incrementing reference count to %d and returning existing data.\n", font->ref_cnt));
switch (type) {
case FONT_TYPE_X: return ((void *) font->fontinfo.xfontinfo); break;
case FONT_TYPE_TTF: return (NULL); break;
case FONT_TYPE_FNLIB: return (NULL); break;
default: return (NULL); break;
}
}
if (type == FONT_TYPE_X) {
if ((xfont = XLoadQueryFont(Xdisplay, name)) == NULL) {
print_error("Unable to load font \"%s\". Falling back on \"%s\"\n", name, fallback);
if ((xfont = XLoadQueryFont(Xdisplay, fallback)) == NULL) {
fatal_error("Couldn't load the fallback font either. Giving up.\n");
} else {
font_cache_add(fallback, type, (void *) xfont);
}
} else {
font_cache_add(name, type, (void *) xfont);
}
return ((void *) xfont);
} else if (type == FONT_TYPE_TTF) {
return (NULL);
} else if (type == FONT_TYPE_FNLIB) {
return (NULL);
}
ASSERT_NOTREACHED_RVAL(NULL);
}
void
free_font(const void *info)
{
ASSERT(info != NULL);
font_cache_del(info);
}
void
change_font(int init, const char *fontname)
{
#ifndef NO_BOLDFONT
static XFontStruct *boldFont = NULL;
#endif
short idx = 0, old_idx = font_idx;
int fh, fw = 0;
D_FONT(("change_font(%d, \"%s\"): def_font_idx == %u, font_idx == %u\n", init, NONULL(fontname), (unsigned int) def_font_idx, (unsigned int) font_idx));
if (init) {
font_idx = def_font_idx;
ASSERT(etfonts != NULL);
ASSERT(etfonts[font_idx] != NULL);
#ifdef MULTI_CHARSET
ASSERT(etmfonts != NULL);
ASSERT(etmfonts[font_idx] != NULL);
#endif
} else {
ASSERT(fontname != NULL);
switch (*fontname) {
case '\0':
font_idx = def_font_idx;
fontname = NULL;
break;
/* special (internal) prefix for font commands */
case FONT_CMD:
idx = atoi(++fontname);
switch (*fontname) {
case '+':
NEXT_FONT(idx);
break;
case '-':
PREV_FONT(idx);
break;
default:
if (*fontname != '\0' && !isdigit(*fontname))
return;
BOUND(idx, 0, (font_cnt - 1));
font_idx = idx;
break;
}
fontname = NULL;
break;
default:
for (idx = 0; idx < font_cnt; idx++) {
if (!strcasecmp(etfonts[idx], fontname)) {
font_idx = idx;
fontname = NULL;
break;
}
}
break;
}
if (fontname != NULL) {
eterm_font_add(&etfonts, fontname, font_idx);
} else if (font_idx == old_idx) {
D_FONT((" -> Change to the same font index (%d) we had before? I don't think so.\n", font_idx));
return;
}
}
D_FONT((" -> Changing to font index %u (\"%s\")\n", (unsigned int) font_idx, NONULL(etfonts[font_idx])));
if (TermWin.font) {
if (font_cache_find_info(etfonts[font_idx], FONT_TYPE_X) != TermWin.font) {
free_font(TermWin.font);
TermWin.font = load_font(etfonts[font_idx], "fixed", FONT_TYPE_X);
}
} else {
TermWin.font = load_font(etfonts[font_idx], "fixed", FONT_TYPE_X);
}
#ifndef NO_BOLDFONT
if (init && rs_boldFont != NULL) {
boldFont = load_font(rs_boldFont, "-misc-fixed-bold-r-semicondensed--13-120-75-75-c-60-iso8859-1", FONT_TYPE_X);
}
#endif
#ifdef MULTI_CHARSET
if (TermWin.mfont) {
if (font_cache_find_info(etmfonts[font_idx], FONT_TYPE_X) != TermWin.mfont) {
free_font(TermWin.mfont);
TermWin.mfont = load_font(etmfonts[font_idx], "k14", FONT_TYPE_X);
}
} else {
TermWin.mfont = load_font(etmfonts[font_idx], "k14", FONT_TYPE_X);
}
# ifdef USE_XIM
if (xim_input_context) {
if (TermWin.fontset) {
XFreeFontSet(Xdisplay, TermWin.fontset);
}
TermWin.fontset = create_fontset(etfonts[font_idx], etmfonts[font_idx]);
xim_set_fontset();
}
# endif
#endif /* MULTI_CHARSET */
if (!init) {
XSetFont(Xdisplay, TermWin.gc, TermWin.font->fid);
}
fw = TermWin.font->min_bounds.width;
#ifdef MULTI_CHARSET
fh = (MAX((encoding_method == LATIN1 ? 0 : TermWin.mfont->ascent), TermWin.font->ascent)
+ MAX((encoding_method == LATIN1 ? 0 : TermWin.mfont->descent), TermWin.font->descent)
+ rs_line_space);
#else
fh = TermWin.font->ascent + TermWin.font->descent + rs_line_space;
#endif
D_FONT(("Font information: Ascent == %hd, Descent == %hd, width min/max %d/%d\n", TermWin.font->ascent, TermWin.font->descent,
TermWin.font->min_bounds.width, TermWin.font->max_bounds.width));
if (TermWin.font->min_bounds.width == TermWin.font->max_bounds.width)
TermWin.fprop = 0; /* Mono-spaced (fixed width) font */
else
TermWin.fprop = 1; /* Proportional font */
if (TermWin.fprop && TermWin.font->per_char && (TermWin.font->max_bounds.width - TermWin.font->min_bounds.width >= 3)) {
int cw, n = 0, sum = 0, sumsq = 0, min_w, max_w;
unsigned int i;
double dev;
min_w = fw;
max_w = TermWin.font->max_bounds.width;
for (i = TermWin.font->min_char_or_byte2; i <= TermWin.font->max_char_or_byte2; i++) {
cw = TermWin.font->per_char[i].width;
if (cw >= min_w && cw <= max_w) {
sum += cw;
sumsq += (cw * cw);
n++;
}
}
if (n) {
dev = sqrt((sumsq - (sum * sum) / n) / n);
/* Final font width is the average width plus 2 standard
deviations, but no larger than the font's max width */
fw = ((sum / n) + (((int) dev) << 1));
D_FONT(("Proportional font optimizations: Average width %d, standard deviation %3.2f, new width %d\n", (sum / n), dev, fw));
UPPER_BOUND(fw, max_w);
} else {
LOWER_BOUND(fw, TermWin.font->max_bounds.width);
}
} else {
LOWER_BOUND(fw, TermWin.font->max_bounds.width);
}
/* not the first time thru and sizes haven't changed */
if (fw == TermWin.fwidth && fh == TermWin.fheight)
return;
TermWin.fwidth = fw;
TermWin.fheight = fh;
/* check that size of boldFont is okay */
#ifndef NO_BOLDFONT
TermWin.boldFont = NULL;
if (boldFont != NULL) {
fw = boldFont->min_bounds.width;
fh = boldFont->ascent + boldFont->descent + rs_line_space;
if (TermWin.fprop == 0) { /* bold font must also be monospaced */
if (fw != boldFont->max_bounds.width)
fw = -1;
} else {
LOWER_BOUND(fw, boldFont->max_bounds.width);
}
if (fw == TermWin.fwidth && fh == TermWin.fheight) {
TermWin.boldFont = boldFont;
}
}
#endif /* NO_BOLDFONT */
set_colorfgbg();
TermWin.width = TermWin.ncol * TermWin.fwidth;
TermWin.height = TermWin.nrow * TermWin.fheight;
D_FONT((" -> New font width/height = %ldx%ld, making the terminal size %ldx%ld\n", TermWin.fwidth, TermWin.fheight, TermWin.width, TermWin.height));
if (init) {
szHint.width_inc = TermWin.fwidth;
szHint.height_inc = TermWin.fheight;
szHint.min_width = szHint.base_width + szHint.width_inc;
szHint.min_height = szHint.base_height + szHint.height_inc;
szHint.width = szHint.base_width + TermWin.width;
szHint.height = szHint.base_height + TermWin.height;
szHint.flags = PMinSize | PResizeInc | PBaseSize;
} else {
parent_resize();
font_chg++;
}
return;
}
static unsigned char
get_corner(const char *corner)
{
if (!BEG_STRCASECMP(corner, "tl ") || !BEG_STRCASECMP(corner, "top_left")) {
return SHADOW_TOP_LEFT;
} else if (!BEG_STRCASECMP(corner, "tr ") || !BEG_STRCASECMP(corner, "top_right")) {
return SHADOW_TOP_RIGHT;
} else if (!BEG_STRCASECMP(corner, "bl ") || !BEG_STRCASECMP(corner, "bottom_left")) {
return SHADOW_BOTTOM_LEFT;
} else if (!BEG_STRCASECMP(corner, "br ") || !BEG_STRCASECMP(corner, "bottom_right")) {
return SHADOW_BOTTOM_RIGHT;
} else {
return 255;
}
}
void
set_shadow_color_by_name(unsigned char which, const char *color_name)
{
Pixel p;
ASSERT(which <= 4);
p = get_color_by_name(color_name, "#000000");
fshadow.color[which] = p;
fshadow.shadow[which] = fshadow.do_shadow = 1;
}
void
set_shadow_color_by_pixel(unsigned char which, Pixel p)
{
ASSERT(which <= 4);
fshadow.color[which] = p;
fshadow.shadow[which] = fshadow.do_shadow = 1;
}
/* Possible syntax for the font effects line:
font fx <topleft_color> <topright_color> <bottomleft_color> <bottomright_color>
font fx outline <color>
font fx shadow <color>
font fx emboss <dark_color> <light_color>
font fx carved <dark_color> <light_color>
^^^^^^^
|
\- This part is not included in the contents of the line variable.
*/
unsigned char
parse_font_fx(const char *line)
{
char *color, *corner;
unsigned char which, n;
Pixel p;
ASSERT(line != NULL);
n = num_words(line);
if (!BEG_STRCASECMP(line, "none")) {
MEMSET(&fshadow, 0, sizeof(fontshadow_t));
} else if (!BEG_STRCASECMP(line, "outline")) {
if (n != 2) {
return 0;
}
color = get_word(2, line);
p = get_color_by_name(color, "black");
FREE(color);
for (which = 0; which < 4; which++) {
set_shadow_color_by_pixel(which, p);
}
} else if (!BEG_STRCASECMP(line, "shadow")) {
if (n == 2) {
which = SHADOW_BOTTOM_RIGHT;
color = get_word(2, line);
} else if (n == 3) {
color = get_word(3, line);
corner = get_pword(2, line);
which = get_corner(corner);
if (which >= 4) {
return 0;
}
} else {
return 0;
}
set_shadow_color_by_name(which, color);
FREE(color);
} else if (!BEG_STRCASECMP(line, "emboss")) {
if (n != 3) {
return 0;
}
color = get_word(2, line);
p = get_color_by_name(color, "black");
set_shadow_color_by_pixel(SHADOW_BOTTOM_RIGHT, p);
FREE(color);
color = get_word(3, line);
p = get_color_by_name(color, "white");
set_shadow_color_by_pixel(SHADOW_TOP_LEFT, p);
FREE(color);
} else if (!BEG_STRCASECMP(line, "carved")) {
if (n != 3) {
return 0;
}
color = get_word(2, line);
p = get_color_by_name(color, "black");
set_shadow_color_by_pixel(SHADOW_TOP_LEFT, p);
FREE(color);
color = get_word(3, line);
p = get_color_by_name(color, "white");
set_shadow_color_by_pixel(SHADOW_BOTTOM_RIGHT, p);
FREE(color);
} else {
unsigned char i;
for (i = 0; i < 4; i++) {
which = get_corner(line);
if (which >= 4) {
which = i;
color = get_word(1, line);
line = get_pword(2, line);
} else {
color = get_word(2, line);
line = get_pword(3, line);
}
set_shadow_color_by_name(which, color);
FREE(color);
if (line == NULL) {
break;
}
}
}
return 1;
}
Reference in New Issue View Git Blame Copy Permalink