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Initial Xft support for st. More to follow.

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This commit is contained in:
Christoph Lohmann
2012-09-24 10:20:45 +02:00
parent 1ba5f4172f
commit 2b3c1219c8
3 changed files with 65 additions and 78 deletions
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9
config.def.h
View File

@@ -1,9 +1,8 @@
#define FONT "-*-*-medium-r-*-*-*-120-75-75-*-70-*-*"
#define BOLDFONT "-*-*-bold-r-*-*-*-120-75-75-*-70-*-*"
/* If italic is not available, fall back to bold. */
#define ITALICFONT "-*-*-medium-o-*-*-*-120-75-75-*-70-*-*," BOLDFONT
#define ITALICBOLDFONT "-*-*-bold-o-*-*-*-120-75-75-*-70-*-*," BOLDFONT
#define FONT "Bitstream Vera Sans Mono:pixelsize=12:antialias=false:autohint=true"
#define BOLDFONT FONT ":weight=bold"
#define ITALICFONT FONT ":slant=italic,oblique"
#define ITALICBOLDFONT BOLDFONT ":slant=italic,oblique"
/* Space in pixels around the terminal buffer */
#define BORDER 2

4
config.mk
View File

@@ -11,8 +11,8 @@ X11INC = /usr/X11R6/include
X11LIB = /usr/X11R6/lib
# includes and libs
INCS = -I. -I/usr/include -I${X11INC}
LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 -lutil -lXext
INCS = -I. -I/usr/include -I${X11INC} -I/usr/include/freetype2
LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 -lutil -lXext -lXft
# flags
CPPFLAGS = -DVERSION=\"${VERSION}\"

130
st.c
View File

@@ -25,6 +25,9 @@
#include <X11/cursorfont.h>
#include <X11/keysym.h>
#include <X11/extensions/Xdbe.h>
#include <X11/Xft/Xft.h>
#define Glyph Glyph_
#define Font Font_
#if defined(__linux)
#include <pty.h>
@@ -195,6 +198,8 @@ typedef struct {
Atom xembed;
XIM xim;
XIC xic;
XftDraw *xft_draw;
Visual *vis;
int scr;
Bool isfixed; /* is fixed geometry? */
int fx, fy, fw, fh; /* fixed geometry */
@@ -212,7 +217,6 @@ typedef struct {
char s[ESC_BUF_SIZ];
} Key;
/* TODO: use better name for vars... */
typedef struct {
int mode;
@@ -228,17 +232,22 @@ typedef struct {
#include "config.h"
/* Font structure */
typedef struct {
int ascent;
int descent;
short lbearing;
short rbearing;
XFontSet set;
XftFont* xft_set;
} Font;
/* Drawing Context */
typedef struct {
ulong col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
XftColor xft_col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
GC gc;
struct {
int ascent;
int descent;
short lbearing;
short rbearing;
XFontSet set;
} font, bfont, ifont, ibfont;
Font font, bfont, ifont, ibfont;
} DC;
static void die(const char*, ...);
@@ -1840,47 +1849,49 @@ void
xresize(int col, int row) {
xw.tw = MAX(1, 2*BORDER + col * xw.cw);
xw.th = MAX(1, 2*BORDER + row * xw.ch);
XftDrawChange(xw.xft_draw, xw.buf);
}
void
xloadcols(void) {
int i, r, g, b;
XColor color;
XRenderColor xft_color = { .alpha = 0 };
ulong white = WhitePixel(xw.dpy, xw.scr);
/* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
for(i = 0; i < LEN(colorname); i++) {
if(!colorname[i])
continue;
if(!XAllocNamedColor(xw.dpy, xw.cmap, colorname[i], &color, &color)) {
if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.xft_col[i])) {
dc.col[i] = white;
fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
} else
dc.col[i] = color.pixel;
dc.col[i] = dc.xft_col[i].pixel;
}
/* load colors [16-255] ; same colors as xterm */
for(i = 16, r = 0; r < 6; r++)
for(g = 0; g < 6; g++)
for(b = 0; b < 6; b++) {
color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
xft_color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
xft_color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
xft_color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color, &dc.xft_col[i])) {
dc.col[i] = white;
fprintf(stderr, "Could not allocate color %d\n", i);
} else
dc.col[i] = color.pixel;
dc.col[i] = dc.xft_col[i].pixel;
i++;
}
for(r = 0; r < 24; r++, i++) {
color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
xft_color.red = xft_color.green = xft_color.blue = 0x0808 + 0x0a0a * r;
if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &xft_color, &dc.xft_col[i])) {
dc.col[i] = white;
fprintf(stderr, "Could not allocate color %d\n", i);
} else
dc.col[i] = color.pixel;
dc.col[i] = dc.xft_col[i].pixel;
}
}
@@ -1917,58 +1928,25 @@ xhints(void) {
XFree(sizeh);
}
XFontSet
xinitfont(char *fontstr) {
XFontSet set;
char *def, **missing;
int n;
missing = NULL;
set = XCreateFontSet(xw.dpy, fontstr, &missing, &n, &def);
if(missing) {
while(n--)
fprintf(stderr, "st: missing fontset: %s\n", missing[n]);
XFreeStringList(missing);
}
return set;
}
void
xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rbearing) {
XFontStruct **xfonts;
char **font_names;
int i, n;
xinitfont(Font *f, char *fontstr) {
f->xft_set = XftFontOpenName(xw.dpy, xw.scr, fontstr);
*ascent = *descent = *lbearing = *rbearing = 0;
n = XFontsOfFontSet(set, &xfonts, &font_names);
for(i = 0; i < n; i++) {
*ascent = MAX(*ascent, (*xfonts)->ascent);
*descent = MAX(*descent, (*xfonts)->descent);
*lbearing = MAX(*lbearing, (*xfonts)->min_bounds.lbearing);
*rbearing = MAX(*rbearing, (*xfonts)->max_bounds.rbearing);
xfonts++;
}
if(!f->xft_set)
die("st: can't open font %s.\n", fontstr);
f->ascent = f->xft_set->ascent;
f->descent = f->xft_set->descent;
f->lbearing = 0;
f->rbearing = f->xft_set->max_advance_width;
}
void
initfonts(char *fontstr, char *bfontstr, char *ifontstr, char *ibfontstr) {
if((dc.font.set = xinitfont(fontstr)) == NULL)
die("Can't load font %s\n", fontstr);
if((dc.bfont.set = xinitfont(bfontstr)) == NULL)
die("Can't load bfont %s\n", bfontstr);
if((dc.ifont.set = xinitfont(ifontstr)) == NULL)
die("Can't load ifont %s\n", ifontstr);
if((dc.ibfont.set = xinitfont(ibfontstr)) == NULL)
die("Can't load ibfont %s\n", ibfontstr);
xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
&dc.font.lbearing, &dc.font.rbearing);
xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
&dc.bfont.lbearing, &dc.bfont.rbearing);
xgetfontinfo(dc.ifont.set, &dc.ifont.ascent, &dc.ifont.descent,
&dc.ifont.lbearing, &dc.ifont.rbearing);
xgetfontinfo(dc.ibfont.set, &dc.ibfont.ascent, &dc.ibfont.descent,
&dc.ibfont.lbearing, &dc.ibfont.rbearing);
xinitfont(&dc.font, fontstr);
xinitfont(&dc.bfont, bfontstr);
xinitfont(&dc.ifont, ifontstr);
xinitfont(&dc.ibfont, ibfontstr);
}
void
@@ -1981,6 +1959,7 @@ xinit(void) {
if(!(xw.dpy = XOpenDisplay(NULL)))
die("Can't open display\n");
xw.scr = XDefaultScreen(xw.dpy);
xw.vis = XDefaultVisual(xw.dpy, xw.scr);
/* font */
initfonts(FONT, BOLDFONT, ITALICFONT, ITALICBOLDFONT);
@@ -2023,14 +2002,19 @@ xinit(void) {
parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
XDefaultVisual(xw.dpy, xw.scr),
xw.vis,
CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
| CWColormap,
&attrs);
/* double buffering */
if(!XdbeQueryExtension(xw.dpy, &major, &minor))
die("Xdbe extension is not present\n");
xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
/* Xft rendering context */
xw.xft_draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
/* input methods */
xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
@@ -2058,7 +2042,8 @@ void
xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
int fg = base.fg, bg = base.bg, temp;
int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
XFontSet fontset = dc.font.set;
Font *font = &dc.font;
XGlyphInfo extents;
int i;
/* only switch default fg/bg if term is in RV mode */
@@ -2074,13 +2059,13 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
if(base.mode & ATTR_BOLD) {
fg += 8;
fontset = dc.bfont.set;
font = &dc.bfont;
}
if(base.mode & ATTR_ITALIC)
fontset = dc.ifont.set;
font = &dc.ifont;
if(base.mode & (ATTR_ITALIC|ATTR_ITALIC))
fontset = dc.ibfont.set;
font = &dc.ibfont;
XSetBackground(xw.dpy, dc.gc, dc.col[bg]);
XSetForeground(xw.dpy, dc.gc, dc.col[fg]);
@@ -2095,7 +2080,10 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
}
}
XmbDrawImageString(xw.dpy, xw.buf, fontset, dc.gc, winx, winy, s, bytelen);
XftTextExtentsUtf8(xw.dpy, font->xft_set, (FcChar8 *)s, bytelen, &extents);
width = extents.xOff;
XftDrawRect(xw.xft_draw, &dc.xft_col[bg], winx, winy - font->ascent, width, xw.ch);
XftDrawStringUtf8(xw.xft_draw, &dc.xft_col[fg], font->xft_set, winx, winy, (FcChar8 *)s, bytelen);
if(base.mode & ATTR_UNDERLINE)
XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);