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Added fallback font support

dev
Jef Roosens 2020-08-22 16:47:46 +02:00
parent cc114781d3
commit d391a7831a
4 changed files with 124 additions and 4 deletions
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6
config.def.h
View File

@ -6,6 +6,12 @@
* font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
*/
static char *font = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
/* Spare fonts */
static char *font2[] = {
/* "Inconsolata for Powerline:pixelsize=12:antialias=true:autohint=true", */
/* "Hack Nerd Font Mono:pixelsize=11:antialias=true:autohint=true", */
};
static int borderpx = 2;
/*

5
config.h
View File

@ -5,7 +5,10 @@
*
* font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
*/
static char *font = "Fira Code:size=10";
static char *font = "Fira Code:size=11";
static char *font2[] = {
"Noto Color Emoji:size=10"
};
static int borderpx = 2;
float alpha = 0.8;

101
x.c
View File

@ -160,6 +160,8 @@ static void xhints(void);
static int xloadcolor(int, const char *, Color *);
static int xloadfont(Font *, FcPattern *);
static void xloadfonts(char *, double);
static int xloadsparefont(FcPattern *, int);
static void xloadsparefonts(void);
static void xunloadfont(Font *);
static void xunloadfonts(void);
static void xsetenv(void);
@ -310,6 +312,7 @@ zoomabs(const Arg *arg)
{
xunloadfonts();
xloadfonts(usedfont, arg->f);
xloadsparefonts();
cresize(0, 0);
redraw();
xhints();
@ -1034,6 +1037,101 @@ xloadfonts(char *fontstr, double fontsize)
FcPatternDestroy(pattern);
}
int
xloadsparefont(FcPattern *pattern, int flags)
{
FcPattern *match;
FcResult result;
match = FcFontMatch(NULL, pattern, &result);
if (!match) {
return 1;
}
if (!(frc[frclen].font = XftFontOpenPattern(xw.dpy, match))) {
FcPatternDestroy(match);
return 1;
}
frc[frclen].flags = flags;
/* Believe U+0000 glyph will present in each default font */
frc[frclen].unicodep = 0;
frclen++;
return 0;
}
void
xloadsparefonts(void)
{
FcPattern *pattern;
double sizeshift, fontval;
int fc;
char **fp;
if (frclen != 0)
die("can't embed spare fonts. cache isn't empty");
/* Calculate count of spare fonts */
fc = sizeof(font2) / sizeof(*font2);
if (fc == 0)
return;
/* Allocate memory for cache entries. */
if (frccap < 4 * fc) {
frccap += 4 * fc - frccap;
frc = xrealloc(frc, frccap * sizeof(Fontcache));
}
for (fp = font2; fp - font2 < fc; ++fp) {
if (**fp == '-')
pattern = XftXlfdParse(*fp, False, False);
else
pattern = FcNameParse((FcChar8 *)*fp);
if (!pattern)
die("can't open spare font %s\n", *fp);
if (defaultfontsize > 0) {
sizeshift = usedfontsize - defaultfontsize;
if (sizeshift != 0 &&
FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
FcResultMatch) {
fontval += sizeshift;
FcPatternDel(pattern, FC_PIXEL_SIZE);
FcPatternDel(pattern, FC_SIZE);
FcPatternAddDouble(pattern, FC_PIXEL_SIZE, fontval);
}
}
FcPatternAddBool(pattern, FC_SCALABLE, 1);
FcConfigSubstitute(NULL, pattern, FcMatchPattern);
XftDefaultSubstitute(xw.dpy, xw.scr, pattern);
if (xloadsparefont(pattern, FRC_NORMAL))
die("can't open spare font %s\n", *fp);
FcPatternDel(pattern, FC_SLANT);
FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
if (xloadsparefont(pattern, FRC_ITALIC))
die("can't open spare font %s\n", *fp);
FcPatternDel(pattern, FC_WEIGHT);
FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
if (xloadsparefont(pattern, FRC_ITALICBOLD))
die("can't open spare font %s\n", *fp);
FcPatternDel(pattern, FC_SLANT);
FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
if (xloadsparefont(pattern, FRC_BOLD))
die("can't open spare font %s\n", *fp);
FcPatternDestroy(pattern);
}
}
void
xunloadfont(Font *f)
{
@ -1146,6 +1244,9 @@ xinit(int cols, int rows)
usedfont = (opt_font == NULL)? font : opt_font;
xloadfonts(usedfont, 0);
/* spare fonts */
xloadsparefonts();
/* colors */
xw.cmap = XCreateColormap(xw.dpy, parent, xw.vis, None);
xloadcols();

16
x.c.orig
View File

@ -19,6 +19,7 @@ char *argv0;
#include "arg.h"
#include "st.h"
#include "win.h"
#include "hb.h"
/* types used in config.h */
typedef struct {
@ -1045,6 +1046,9 @@ xunloadfont(Font *f)
void
xunloadfonts(void)
{
/* Clear Harfbuzz font cache. */
hbunloadfonts();
/* Free the loaded fonts in the font cache. */
while (frclen > 0)
XftFontClose(xw.dpy, frc[--frclen].font);
@ -1253,7 +1257,7 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
mode = glyphs[i].mode;
/* Skip dummy wide-character spacing. */
if (mode == ATTR_WDUMMY)
if (mode & ATTR_WDUMMY)
continue;
/* Determine font for glyph if different from previous glyph. */
@ -1365,6 +1369,9 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
numspecs++;
}
/* Harfbuzz transformation for ligatures. */
hbtransform(specs, glyphs, len, x, y);
return numspecs;
}
@ -1518,14 +1525,17 @@ xdrawglyph(Glyph g, int x, int y)
}
void
xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int len)
{
Color drawcol;
/* remove the old cursor */
if (selected(ox, oy))
og.mode ^= ATTR_REVERSE;
xdrawglyph(og, ox, oy);
/* Redraw the line where cursor was previously.
* It will restore the ligatures broken by the cursor. */
xdrawline(line, 0, oy, len);
if (IS_SET(MODE_HIDE))
return;