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Use libdraw: add Xft and fallback-fonts support to graphics lib 

- libdraw, util: add drw.{c,h}, util.{c,h} and update code.
- libdraw: fix drw_rect(): use w and h parameter.
- libdraw: print errstr if last character in string was ":" (sbase).
- libdraw: drw_clr_free() allow valid free(NULL).
- config.def.h: set default font to monospace.
- cleanup() on exit.
- LICENSE: update license string for dmenu -v to 2015.
- LICENSE: add myself to LICENSE
master
Hiltjo Posthuma 10 years ago committed by Anselm R Garbe
parent
13a529ce63
commit
4b1fecd44e
11 changed files with 684 additions and 316 deletions
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  1. 1
      LICENSE
  2. 15
      Makefile
  3. 6
      config.def.h
  4. 4
      config.mk
  5. 241
      dmenu.c
  6. 177
      draw.c
  7. 35
      draw.h
  8. 413
      drw.c
  9. 74
      drw.h
  10. 23
      util.c
  11. 7
      util.h

1
LICENSE
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@ -7,6 +7,7 @@ MIT/X Consortium License
© 2009 Evan Gates <evan.gates@gmail.com>
© 2006-2008 Sander van Dijk <a dot h dot vandijk at gmail dot com>
© 2006-2007 Michał Janeczek <janeczek at gmail dot com>
© 2014-2015 Hiltjo Posthuma <hiltjo@codemadness.org>
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),

15
Makefile
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@ -3,7 +3,7 @@
include config.mk
SRC = dmenu.c draw.c stest.c
SRC = drw.c dmenu.c stest.c util.c
OBJ = ${SRC:.c=.o}
all: options dmenu stest
@ -15,18 +15,18 @@ options:
@echo "CC = ${CC}"
.c.o:
@echo CC -c $<
@${CC} -c $< ${CFLAGS}
@echo CC $<
@${CC} -c ${CFLAGS} $<
config.h:
@echo creating $@ from config.def.h
@cp config.def.h $@
${OBJ}: config.h config.mk draw.h
${OBJ}: config.h config.mk drw.h
dmenu: dmenu.o draw.o
dmenu: dmenu.o drw.o util.o
@echo CC -o $@
@${CC} -o $@ dmenu.o draw.o ${LDFLAGS}
@${CC} -o $@ dmenu.o drw.o util.o ${LDFLAGS}
stest: stest.o
@echo CC -o $@
@ -39,7 +39,8 @@ clean:
dist: clean
@echo creating dist tarball
@mkdir -p dmenu-${VERSION}
@cp LICENSE Makefile README config.mk dmenu.1 draw.h dmenu_path dmenu_run stest.1 ${SRC} dmenu-${VERSION}
@cp LICENSE Makefile README config.mk dmenu.1 drw.h util.h dmenu_path \
dmenu_run stest.1 ${SRC} dmenu-${VERSION}
@tar -cf dmenu-${VERSION}.tar dmenu-${VERSION}
@gzip dmenu-${VERSION}.tar
@rm -rf dmenu-${VERSION}

6
config.def.h
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@ -4,7 +4,10 @@
/* Default settings; can be overrided by command line. */
static Bool topbar = True; /* -b option; if False, dmenu appears at bottom */
static const char *font = NULL; /* -fn option; default X11 font or font set */
/* -fn option overrides fonts[0]; default X11 font or font set */
static const char *fonts[] = {
"monospace:size=10"
};
static const char *prompt = NULL; /* -p option; prompt to the elft of input field */
static const char *normbgcolor = "#222222"; /* -nb option; normal background */
static const char *normfgcolor = "#bbbbbb"; /* -nf option; normal foreground */
@ -14,4 +17,3 @@ static const char *outbgcolor = "#00ffff";
static const char *outfgcolor = "#000000";
/* -l option; if nonzero, dmenu uses vertical list with given number of lines */
static unsigned int lines = 0;

4
config.mk
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@ -13,8 +13,8 @@ XINERAMALIBS = -lXinerama
XINERAMAFLAGS = -DXINERAMA
# includes and libs
INCS = -I${X11INC}
LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS}
INCS = -I${X11INC} -I/usr/include/freetype2
LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} -lfontconfig -lXft
# flags
CPPFLAGS = -D_BSD_SOURCE -D_POSIX_C_SOURCE=200809L -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}

241
dmenu.c
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@ -1,5 +1,6 @@
/* See LICENSE file for copyright and license details. */
#include <ctype.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -11,12 +12,20 @@
#ifdef XINERAMA
#include <X11/extensions/Xinerama.h>
#endif
#include "draw.h"
#include <X11/Xft/Xft.h>
#include "drw.h"
#include "util.h"
/* macros */
#define INTERSECT(x,y,w,h,r) (MAX(0, MIN((x)+(w),(r).x_org+(r).width) - MAX((x),(r).x_org)) \
* MAX(0, MIN((y)+(h),(r).y_org+(r).height) - MAX((y),(r).y_org)))
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define LENGTH(X) (sizeof X / sizeof X[0])
#define TEXTNW(X,N) (drw_font_getexts_width(drw->fonts[0], (X), (N)))
#define TEXTW(X) (drw_text(drw, 0, 0, 0, 0, (X), 0) + drw->fonts[0]->h)
/* enums */
enum { SchemeNorm, SchemeSel, SchemeOut, SchemeLast }; /* color schemes */
typedef struct Item Item;
struct Item {
@ -28,6 +37,7 @@ struct Item {
static void appenditem(Item *item, Item **list, Item **last);
static void calcoffsets(void);
static char *cistrstr(const char *s, const char *sub);
static void cleanup(void);
static void drawmenu(void);
static void grabkeyboard(void);
static void insert(const char *str, ssize_t n);
@ -44,11 +54,7 @@ static char text[BUFSIZ] = "";
static int bh, mw, mh;
static int inputw, promptw;
static size_t cursor = 0;
static unsigned long normcol[ColLast];
static unsigned long selcol[ColLast];
static unsigned long outcol[ColLast];
static Atom clip, utf8;
static DC *dc;
static Item *items = NULL;
static Item *matches, *matchend;
static Item *prev, *curr, *next, *sel;
@ -56,6 +62,13 @@ static Window win;
static XIC xic;
static int mon = -1;
static ClrScheme scheme[SchemeLast];
static Display *dpy;
static int screen;
static Window root;
static Drw *drw;
static int sw, sh; /* X display screen geometry width, height */
#include "config.h"
static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
@ -69,8 +82,8 @@ main(int argc, char *argv[]) {
for(i = 1; i < argc; i++)
/* these options take no arguments */
if(!strcmp(argv[i], "-v")) { /* prints version information */
puts("dmenu-"VERSION", © 2006-2014 dmenu engineers, see LICENSE for details");
exit(EXIT_SUCCESS);
puts("dmenu-"VERSION", © 2006-2015 dmenu engineers, see LICENSE for details");
exit(0);
}
else if(!strcmp(argv[i], "-b")) /* appears at the bottom of the screen */
topbar = False;
@ -90,7 +103,7 @@ main(int argc, char *argv[]) {
else if(!strcmp(argv[i], "-p")) /* adds prompt to left of input field */
prompt = argv[++i];
else if(!strcmp(argv[i], "-fn")) /* font or font set */
font = argv[++i];
fonts[0] = argv[++i];
else if(!strcmp(argv[i], "-nb")) /* normal background color */
normbgcolor = argv[++i];
else if(!strcmp(argv[i], "-nf")) /* normal foreground color */
@ -102,8 +115,19 @@ main(int argc, char *argv[]) {
else
usage();
dc = initdc();
initfont(dc, font);
if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
fputs("warning: no locale support\n", stderr);
if(!(dpy = XOpenDisplay(NULL)))
die("dwm: cannot open display\n");
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
sw = DisplayWidth(dpy, screen);
sh = DisplayHeight(dpy, screen);
drw = drw_create(dpy, screen, root, sw, sh);
drw_load_fonts(drw, fonts, LENGTH(fonts));
if(!drw->fontcount)
die("No fonts could be loaded.\n");
drw_setscheme(drw, &scheme[SchemeNorm]);
if(fast) {
grabkeyboard();
@ -138,16 +162,30 @@ calcoffsets(void) {
if(lines > 0)
n = lines * bh;
else
n = mw - (promptw + inputw + textw(dc, "<") + textw(dc, ">"));
n = mw - (promptw + inputw + TEXTW("<") + TEXTW(">"));
/* calculate which items will begin the next page and previous page */
for(i = 0, next = curr; next; next = next->right)
if((i += (lines > 0) ? bh : MIN(textw(dc, next->text), n)) > n)
if((i += (lines > 0) ? bh : MIN(TEXTW(next->text), n)) > n)
break;
for(i = 0, prev = curr; prev && prev->left; prev = prev->left)
if((i += (lines > 0) ? bh : MIN(textw(dc, prev->left->text), n)) > n)
if((i += (lines > 0) ? bh : MIN(TEXTW(prev->left->text), n)) > n)
break;
}
void
cleanup(void) {
XUngrabKey(dpy, AnyKey, AnyModifier, root);
drw_clr_free(scheme[SchemeNorm].bg);
drw_clr_free(scheme[SchemeNorm].fg);
drw_clr_free(scheme[SchemeSel].fg);
drw_clr_free(scheme[SchemeSel].bg);
drw_clr_free(scheme[SchemeOut].fg);
drw_clr_free(scheme[SchemeOut].bg);
drw_free(drw);
XSync(dpy, False);
XCloseDisplay(dpy);
}
char *
cistrstr(const char *s, const char *sub) {
size_t len;
@ -162,50 +200,69 @@ void
drawmenu(void) {
int curpos;
Item *item;
int x = 0, y = 0, h = bh, w;
dc->x = 0;
dc->y = 0;
dc->h = bh;
drawrect(dc, 0, 0, mw, mh, True, BG(dc, normcol));
drw_setscheme(drw, &scheme[SchemeNorm]);
drw_rect(drw, 0, 0, mw, mh, True, 1, 1);
if(prompt && *prompt) {
dc->w = promptw;
drawtext(dc, prompt, selcol);
dc->x = dc->w;
drw_setscheme(drw, &scheme[SchemeSel]);
drw_text(drw, x, 0, promptw, bh, prompt, 1);
x += promptw;
}
/* draw input field */
dc->w = (lines > 0 || !matches) ? mw - dc->x : inputw;
drawtext(dc, text, normcol);
if((curpos = textnw(dc, text, cursor) + dc->h/2 - 2) < dc->w)
drawrect(dc, curpos, 2, 1, dc->h - 4, True, FG(dc, normcol));
w = (lines > 0 || !matches) ? mw - x : inputw;
drw_setscheme(drw, &scheme[SchemeNorm]);
drw_text(drw, x, 0, w, bh, text, 0);
if((curpos = TEXTNW(text, cursor) + bh/2 - 2) < w) {
drw_setscheme(drw, &scheme[SchemeNorm]);
drw_rect(drw, x + curpos + 2, 2, 1, bh - 4, 1, 1, 0);
}
if(lines > 0) {
/* draw vertical list */
dc->w = mw - dc->x;
w = mw - x;
for(item = curr; item != next; item = item->right) {
dc->y += dc->h;
drawtext(dc, item->text, (item == sel) ? selcol :
(item->out) ? outcol : normcol);
y += h;
if(item == sel)
drw_setscheme(drw, &scheme[SchemeSel]);
else if(item->out)
drw_setscheme(drw, &scheme[SchemeOut]);
else
drw_setscheme(drw, &scheme[SchemeNorm]);
drw_text(drw, x, y, w, bh, item->text, 0);
}
}
else if(matches) {
/* draw horizontal list */
dc->x += inputw;
dc->w = textw(dc, "<");
if(curr->left)
drawtext(dc, "<", normcol);
x += inputw;
w = TEXTW("<");
if(curr->left) {
drw_setscheme(drw, &scheme[SchemeNorm]);
drw_text(drw, x, 0, w, bh, "<", 0);
}
for(item = curr; item != next; item = item->right) {
dc->x += dc->w;
dc->w = MIN(textw(dc, item->text), mw - dc->x - textw(dc, ">"));
drawtext(dc, item->text, (item == sel) ? selcol :
(item->out) ? outcol : normcol);
x += w;
w = MIN(TEXTW(item->text), mw - x - TEXTW(">"));
if(item == sel)
drw_setscheme(drw, &scheme[SchemeSel]);
else if(item->out)
drw_setscheme(drw, &scheme[SchemeOut]);
else
drw_setscheme(drw, &scheme[SchemeNorm]);
drw_text(drw, x, 0, w, bh, item->text, 0);
}
w = TEXTW(">");
x = mw - w;
if(next) {
drw_setscheme(drw, &scheme[SchemeNorm]);
drw_text(drw, x, 0, w, bh, ">", 0);
}
dc->w = textw(dc, ">");
dc->x = mw - dc->w;
if(next)
drawtext(dc, ">", normcol);
}
mapdc(dc, win, mw, mh);
drw_map(drw, win, 0, 0, mw, mh);
}
void
@ -214,12 +271,12 @@ grabkeyboard(void) {
/* try to grab keyboard, we may have to wait for another process to ungrab */
for(i = 0; i < 1000; i++) {
if(XGrabKeyboard(dc->dpy, DefaultRootWindow(dc->dpy), True,
if(XGrabKeyboard(dpy, DefaultRootWindow(dpy), True,
GrabModeAsync, GrabModeAsync, CurrentTime) == GrabSuccess)
return;
usleep(1000);
}
eprintf("cannot grab keyboard\n");
die("cannot grab keyboard\n");
}
void
@ -276,14 +333,15 @@ keypress(XKeyEvent *ev) {
insert(NULL, nextrune(-1) - cursor);
break;
case XK_y: /* paste selection */
XConvertSelection(dc->dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
utf8, utf8, win, CurrentTime);
return;
case XK_Return:
case XK_KP_Enter:
break;
case XK_bracketleft:
exit(EXIT_FAILURE);
cleanup();
exit(1);
default:
return;
}
@ -330,7 +388,8 @@ keypress(XKeyEvent *ev) {
sel = matchend;
break;
case XK_Escape:
exit(EXIT_FAILURE);
cleanup();
exit(1);
case XK_Home:
if(sel == matches) {
cursor = 0;
@ -368,8 +427,10 @@ keypress(XKeyEvent *ev) {
case XK_Return:
case XK_KP_Enter:
puts((sel && !(ev->state & ShiftMask)) ? sel->text : text);
if(!(ev->state & ControlMask))
exit(EXIT_SUCCESS);
if(!(ev->state & ControlMask)) {
cleanup();
exit(0);
}
if(sel)
sel->out = True;
break;
@ -413,7 +474,7 @@ match(void) {
/* separate input text into tokens to be matched individually */
for(s = strtok(buf, " "); s; tokv[tokc-1] = s, s = strtok(NULL, " "))
if(++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
eprintf("cannot realloc %u bytes\n", tokn * sizeof *tokv);
die("cannot realloc %u bytes\n", tokn * sizeof *tokv);
len = tokc ? strlen(tokv[0]) : 0;
matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
@ -470,7 +531,7 @@ paste(void) {
Atom da;
/* we have been given the current selection, now insert it into input */
XGetWindowProperty(dc->dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
utf8, &da, &di, &dl, &dl, (unsigned char **)&p);
insert(p, (q = strchr(p, '\n')) ? q-p : (ssize_t)strlen(p));
XFree(p);
@ -486,18 +547,18 @@ readstdin(void) {
for(i = 0; fgets(buf, sizeof buf, stdin); i++) {
if(i+1 >= size / sizeof *items)
if(!(items = realloc(items, (size += BUFSIZ))))
eprintf("cannot realloc %u bytes:", size);
die("cannot realloc %u bytes:", size);
if((p = strchr(buf, '\n')))
*p = '\0';
if(!(items[i].text = strdup(buf)))
eprintf("cannot strdup %u bytes:", strlen(buf)+1);
die("cannot strdup %u bytes:", strlen(buf)+1);
items[i].out = False;
if(strlen(items[i].text) > max)
max = strlen(maxstr = items[i].text);
}
if(items)
items[i].text = NULL;
inputw = maxstr ? textw(dc, maxstr) : 0;
inputw = maxstr ? TEXTW(maxstr) : 0;
lines = MIN(lines, i);
}
@ -505,13 +566,13 @@ void
run(void) {
XEvent ev;
while(!XNextEvent(dc->dpy, &ev)) {
while(!XNextEvent(dpy, &ev)) {
if(XFilterEvent(&ev, win))
continue;
switch(ev.type) {
case Expose:
if(ev.xexpose.count == 0)
mapdc(dc, win, mw, mh);
drw_map(drw, win, 0, 0, mw, mh);
break;
case KeyPress:
keypress(&ev.xkey);
@ -522,7 +583,7 @@ run(void) {
break;
case VisibilityNotify:
if(ev.xvisibility.state != VisibilityUnobscured)
XRaiseWindow(dc->dpy, win);
XRaiseWindow(dpy, win);
break;
}
}
@ -530,47 +591,45 @@ run(void) {
void
setup(void) {
int x, y, screen = DefaultScreen(dc->dpy);
Window root = RootWindow(dc->dpy, screen);
int x, y;
XSetWindowAttributes swa;
XIM xim;
#ifdef XINERAMA
int n;
XineramaScreenInfo *info;
Window w, pw, dw, *dws;
XWindowAttributes wa;
int a, j, di, n, i = 0, area = 0;
unsigned int du;
#endif
normcol[ColBG] = getcolor(dc, normbgcolor);
normcol[ColFG] = getcolor(dc, normfgcolor);
selcol[ColBG] = getcolor(dc, selbgcolor);
selcol[ColFG] = getcolor(dc, selfgcolor);
outcol[ColBG] = getcolor(dc, outbgcolor);
outcol[ColFG] = getcolor(dc, outfgcolor);
/* init appearance */
scheme[SchemeNorm].bg = drw_clr_create(drw, normbgcolor);
scheme[SchemeNorm].fg = drw_clr_create(drw, normfgcolor);
scheme[SchemeSel].bg = drw_clr_create(drw, selbgcolor);
scheme[SchemeSel].fg = drw_clr_create(drw, selfgcolor);
scheme[SchemeOut].bg = drw_clr_create(drw, outbgcolor);
scheme[SchemeOut].fg = drw_clr_create(drw, outfgcolor);
clip = XInternAtom(dc->dpy, "CLIPBOARD", False);
utf8 = XInternAtom(dc->dpy, "UTF8_STRING", False);
clip = XInternAtom(dpy, "CLIPBOARD", False);
utf8 = XInternAtom(dpy, "UTF8_STRING", False);
/* calculate menu geometry */
bh = dc->font.height + 2;
bh = drw->fonts[0]->h + 2;
lines = MAX(lines, 0);
mh = (lines + 1) * bh;
#ifdef XINERAMA
if((info = XineramaQueryScreens(dc->dpy, &n))) {
int a, j, di, i = 0, area = 0;
unsigned int du;
Window w, pw, dw, *dws;
XWindowAttributes wa;
XGetInputFocus(dc->dpy, &w, &di);
if((info = XineramaQueryScreens(dpy, &n))) {
XGetInputFocus(dpy, &w, &di);
if(mon != -1 && mon < n)
i = mon;
if(!i && w != root && w != PointerRoot && w != None) {
/* find top-level window containing current input focus */
do {
if(XQueryTree(dc->dpy, (pw = w), &dw, &w, &dws, &du) && dws)
if(XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
XFree(dws);
} while(w != root && w != pw);
/* find xinerama screen with which the window intersects most */
if(XGetWindowAttributes(dc->dpy, pw, &wa))
if(XGetWindowAttributes(dpy, pw, &wa))
for(j = 0; j < n; j++)
if((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
area = a;
@ -578,7 +637,7 @@ setup(void) {
}
}
/* no focused window is on screen, so use pointer location instead */
if(mon == -1 && !area && XQueryPointer(dc->dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
if(mon == -1 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
for(i = 0; i < n; i++)
if(INTERSECT(x, y, 1, 1, info[i]))
break;
@ -592,29 +651,29 @@ setup(void) {
#endif
{
x = 0;
y = topbar ? 0 : DisplayHeight(dc->dpy, screen) - mh;
mw = DisplayWidth(dc->dpy, screen);
y = topbar ? 0 : sh - mh;
mw = sw;
}
promptw = (prompt && *prompt) ? textw(dc, prompt) : 0;
promptw = (prompt && *prompt) ? TEXTW(prompt) : 0;
inputw = MIN(inputw, mw/3);
match();
/* create menu window */
swa.override_redirect = True;
swa.background_pixel = normcol[ColBG];
swa.background_pixel = scheme[SchemeNorm].bg->pix;
swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
win = XCreateWindow(dc->dpy, root, x, y, mw, mh, 0,
DefaultDepth(dc->dpy, screen), CopyFromParent,
DefaultVisual(dc->dpy, screen),
win = XCreateWindow(dpy, root, x, y, mw, mh, 0,
DefaultDepth(dpy, screen), CopyFromParent,
DefaultVisual(dpy, screen),
CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
/* open input methods */
xim = XOpenIM(dc->dpy, NULL, NULL, NULL);
xim = XOpenIM(dpy, NULL, NULL, NULL);
xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
XNClientWindow, win, XNFocusWindow, win, NULL);
XMapRaised(dc->dpy, win);
resizedc(dc, mw, mh);
XMapRaised(dpy, win);
drw_resize(drw, mw, mh);
drawmenu();
}
@ -622,5 +681,5 @@ void
usage(void) {
fputs("usage: dmenu [-b] [-f] [-i] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
" [-nb color] [-nf color] [-sb color] [-sf color] [-v]\n", stderr);
exit(EXIT_FAILURE);
exit(1);
}

177
draw.c
Unescape View File

@ -1,177 +0,0 @@
/* See LICENSE file for copyright and license details. */
#include <locale.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include "draw.h"
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define DEFAULTFN "fixed"
static Bool loadfont(DC *dc, const char *fontstr);
void
drawrect(DC *dc, int x, int y, unsigned int w, unsigned int h, Bool fill, unsigned long color) {
XSetForeground(dc->dpy, dc->gc, color);
if(fill)
XFillRectangle(dc->dpy, dc->canvas, dc->gc, dc->x + x, dc->y + y, w, h);
else
XDrawRectangle(dc->dpy, dc->canvas, dc->gc, dc->x + x, dc->y + y, w-1, h-1);
}
void
drawtext(DC *dc, const char *text, unsigned long col[ColLast]) {
char buf[BUFSIZ];
size_t mn, n = strlen(text);
/* shorten text if necessary */
for(mn = MIN(n, sizeof buf); textnw(dc, text, mn) + dc->font.height/2 > dc->w; mn--)
if(mn == 0)
return;
memcpy(buf, text, mn);
if(mn < n)
for(n = MAX(mn-3, 0); n < mn; buf[n++] = '.');
drawrect(dc, 0, 0, dc->w, dc->h, True, BG(dc, col));
drawtextn(dc, buf, mn, col);
}
void
drawtextn(DC *dc, const char *text, size_t n, unsigned long col[ColLast]) {
int x = dc->x + dc->font.height/2;
int y = dc->y + dc->font.ascent+1;
XSetForeground(dc->dpy, dc->gc, FG(dc, col));
if(dc->font.set)
XmbDrawString(dc->dpy, dc->canvas, dc->font.set, dc->gc, x, y, text, n);
else {
XSetFont(dc->dpy, dc->gc, dc->font.xfont->fid);
XDrawString(dc->dpy, dc->canvas, dc->gc, x, y, text, n);
}
}
void
eprintf(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
if(fmt[0] != '\0' && fmt[strlen(fmt)-1] == ':') {
fputc(' ', stderr);
perror(NULL);
}
exit(EXIT_FAILURE);
}
void
freedc(DC *dc) {
if(dc->font.set)
XFreeFontSet(dc->dpy, dc->font.set);
if(dc->font.xfont)
XFreeFont(dc->dpy, dc->font.xfont);
if(dc->canvas)
XFreePixmap(dc->dpy, dc->canvas);
XFreeGC(dc->dpy, dc->gc);
XCloseDisplay(dc->dpy);
free(dc);
}
unsigned long
getcolor(DC *dc, const char *colstr) {
Colormap cmap = DefaultColormap(dc->dpy, DefaultScreen(dc->dpy));
XColor color;
if(!XAllocNamedColor(dc->dpy, cmap, colstr, &color, &color))
eprintf("cannot allocate color '%s'\n", colstr);
return color.pixel;
}
DC *
initdc(void) {
DC *dc;
if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
fputs("no locale support\n", stderr);
if(!(dc = calloc(1, sizeof *dc)))
eprintf("cannot malloc %u bytes:", sizeof *dc);
if(!(dc->dpy = XOpenDisplay(NULL)))
eprintf("cannot open display\n");
dc->gc = XCreateGC(dc->dpy, DefaultRootWindow(dc->dpy), 0, NULL);
XSetLineAttributes(dc->dpy, dc->gc, 1, LineSolid, CapButt, JoinMiter);
return dc;
}
void
initfont(DC *dc, const char *fontstr) {
if(!loadfont(dc, fontstr ? fontstr : DEFAULTFN)) {
if(fontstr != NULL)
fprintf(stderr, "cannot load font '%s'\n", fontstr);
if(fontstr == NULL || !loadfont(dc, DEFAULTFN))
eprintf("cannot load font '%s'\n", DEFAULTFN);
}
dc->font.height = dc->font.ascent + dc->font.descent;
}
Bool
loadfont(DC *dc, const char *fontstr) {
char *def, **missing, **names;
int i, n;
XFontStruct **xfonts;
if(!*fontstr)
return False;
if((dc->font.set = XCreateFontSet(dc->dpy, fontstr, &missing, &n, &def))) {
n = XFontsOfFontSet(dc->font.set, &xfonts, &names);
for(i = 0; i < n; i++) {
dc->font.ascent = MAX(dc->font.ascent, xfonts[i]->ascent);
dc->font.descent = MAX(dc->font.descent, xfonts[i]->descent);
dc->font.width = MAX(dc->font.width, xfonts[i]->max_bounds.width);
}
}
else if((dc->font.xfont = XLoadQueryFont(dc->dpy, fontstr))) {
dc->font.ascent = dc->font.xfont->ascent;
dc->font.descent = dc->font.xfont->descent;
dc->font.width = dc->font.xfont->max_bounds.width;
}
if(missing)
XFreeStringList(missing);
return dc->font.set || dc->font.xfont;
}
void
mapdc(DC *dc, Window win, unsigned int w, unsigned int h) {
XCopyArea(dc->dpy, dc->canvas, win, dc->gc, 0, 0, w, h, 0, 0);
}
void
resizedc(DC *dc, unsigned int w, unsigned int h) {
if(dc->canvas)
XFreePixmap(dc->dpy, dc->canvas);
dc->w = w;
dc->h = h;
dc->canvas = XCreatePixmap(dc->dpy, DefaultRootWindow(dc->dpy), w, h,
DefaultDepth(dc->dpy, DefaultScreen(dc->dpy)));
}
int
textnw(DC *dc, const char *text, size_t len) {
if(dc->font.set) {
XRectangle r;
XmbTextExtents(dc->font.set, text, len, NULL, &r);
return r.width;
}
return XTextWidth(dc->font.xfont, text, len);
}
int
textw(DC *dc, const char *text) {
return textnw(dc, text, strlen(text)) + dc->font.height;
}

35
draw.h
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/* See LICENSE file for copyright and license details. */
#define FG(dc, col) ((col)[(dc)->invert ? ColBG : ColFG])
#define BG(dc, col) ((col)[(dc)->invert ? ColFG : ColBG])
enum { ColBG, ColFG, ColBorder, ColLast };
typedef struct {
int x, y, w, h;
Bool invert;
Display *dpy;
GC gc;
Pixmap canvas;
struct {
int ascent;
int descent;
int height;
int width;
XFontSet set;
XFontStruct *xfont;
} font;
} DC; /* draw context */
void drawrect(DC *dc, int x, int y, unsigned int w, unsigned int h, Bool fill, unsigned long color);
void drawtext(DC *dc, const char *text, unsigned long col[ColLast]);
void drawtextn(DC *dc, const char *text, size_t n, unsigned long col[ColLast]);
void eprintf(const char *fmt, ...);
void freedc(DC *dc);
unsigned long getcolor(DC *dc, const char *colstr);
DC *initdc(void);
void initfont(DC *dc, const char *fontstr);
void mapdc(DC *dc, Window win, unsigned int w, unsigned int h);
void resizedc(DC *dc, unsigned int w, unsigned int h);
int textnw(DC *dc, const char *text, size_t len);
int textw(DC *dc, const char *text);

413
drw.c
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/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xft/Xft.h>
#include "drw.h"
#include "util.h"
#define UTF_INVALID 0xFFFD
#define UTF_SIZ 4
static const unsigned char utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
static const unsigned char utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
static const long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
static const long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
static long
utf8decodebyte(const char c, size_t *i) {
for(*i = 0; *i < (UTF_SIZ + 1); ++(*i))
if(((unsigned char)c & utfmask[*i]) == utfbyte[*i])
return (unsigned char)c & ~utfmask[*i];
return 0;
}
static size_t
utf8validate(long *u, size_t i) {
if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
*u = UTF_INVALID;
for(i = 1; *u > utfmax[i]; ++i)
;
return i;
}
static size_t
utf8decode(const char *c, long *u, size_t clen) {
size_t i, j, len, type;
long udecoded;
*u = UTF_INVALID;
if(!clen)
return 0;
udecoded = utf8decodebyte(c[0], &len);
if(!BETWEEN(len, 1, UTF_SIZ))
return 1;
for(i = 1, j = 1; i < clen && j < len; ++i, ++j) {
udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
if(type != 0)
return j;
}
if(j < len)
return 0;
*u = udecoded;
utf8validate(u, len);
return len;
}
Drw *
drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h) {
Drw *drw = (Drw *)calloc(1, sizeof(Drw));
if(!drw)
return NULL;
drw->dpy = dpy;
drw->screen = screen;
drw->root = root;
drw->w = w;
drw->h = h;
drw->drawable = XCreatePixmap(dpy, root, w, h, DefaultDepth(dpy, screen));
drw->gc = XCreateGC(dpy, root, 0, NULL);
drw->fontcount = 0;
XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
return drw;
}
void
drw_resize(Drw *drw, unsigned int w, unsigned int h) {
if(!drw)
return;
drw->w = w;
drw->h = h;
if(drw->drawable != 0)
XFreePixmap(drw->dpy, drw->drawable);
drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, DefaultDepth(drw->dpy, drw->screen));
}
void
drw_free(Drw *drw) {
size_t i;
for (i = 0; i < drw->fontcount; i++) {
drw_font_free(drw->fonts[i]);
}
XFreePixmap(drw->dpy, drw->drawable);
XFreeGC(drw->dpy, drw->gc);
free(drw);
}
/* This function is an implementation detail. Library users should use
* drw_font_create instead.
*/
static Fnt *
drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) {
Fnt *font;
if (!(fontname || fontpattern))
die("No font specified.\n");
if (!(font = (Fnt *)calloc(1, sizeof(Fnt))))
return NULL;
if (fontname) {
/* Using the pattern found at font->xfont->pattern does not yield same
* the same substitution results as using the pattern returned by
* FcNameParse; using the latter results in the desired fallback
* behaviour whereas the former just results in
* missing-character-rectangles being drawn, at least with some fonts.
*/
if (!(font->xfont = XftFontOpenName(drw->dpy, drw->screen, fontname)) ||
!(font->pattern = FcNameParse((FcChar8 *) fontname))) {
if (font->xfont) {
XftFontClose(drw->dpy, font->xfont);
font->xfont = NULL;
}
fprintf(stderr, "error, cannot load font: '%s'\n", fontname);
}
} else if (fontpattern) {
if (!(font->xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
fprintf(stderr, "error, cannot load font pattern.\n");
} else {
font->pattern = NULL;
}
}
if (!font->xfont) {
free(font);
return NULL;
}
font->ascent = font->xfont->ascent;
font->descent = font->xfont->descent;
font->h = font->ascent + font->descent;
font->dpy = drw->dpy;
return font;
}
Fnt*
drw_font_create(Drw *drw, const char *fontname) {
return drw_font_xcreate(drw, fontname, NULL);
}
void
drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount) {
size_t i;
Fnt *font;
for (i = 0; i < fontcount; i++) {
if (drw->fontcount >= DRW_FONT_CACHE_SIZE) {
die("Font cache exhausted.\n");
} else if ((font = drw_font_xcreate(drw, fonts[i], NULL))) {
drw->fonts[drw->fontcount++] = font;
}
}
}
void
drw_font_free(Fnt *font) {
if(!font)
return;
if(font->pattern)
FcPatternDestroy(font->pattern);
XftFontClose(font->dpy, font->xfont);
free(font);
}
Clr *
drw_clr_create(Drw *drw, const char *clrname) {
Clr *clr;
Colormap cmap;
Visual *vis;
if(!drw)
return NULL;
clr = (Clr *)calloc(1, sizeof(Clr));
if(!clr)
return NULL;
cmap = DefaultColormap(drw->dpy, drw->screen);
vis = DefaultVisual(drw->dpy, drw->screen);
if(!XftColorAllocName(drw->dpy, vis, cmap, clrname, &clr->rgb))
die("error, cannot allocate color '%s'\n", clrname);
clr->pix = clr->rgb.pixel;
return clr;
}
void
drw_clr_free(Clr *clr) {
free(clr);
}
void
drw_setscheme(Drw *drw, ClrScheme *scheme) {
if(!drw)
return;
drw->scheme = scheme;
}
void
drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert) {
if(!drw || !drw->scheme)
return;
XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->pix : drw->scheme->fg->pix);
if(filled)
XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w + 1, h + 1);
else if(empty)
XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
}
int
drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert) {
char buf[1024];
int tx, ty, th;
Extnts tex;
Colormap cmap;
Visual *vis;
XftDraw *d;
Fnt *curfont, *nextfont;
size_t i, len;
int utf8strlen, utf8charlen, render;
long utf8codepoint = 0;
const char *utf8str;
FcCharSet *fccharset;
FcPattern *fcpattern;
FcPattern *match;
XftResult result;
int charexists = 0;
if (!(render = x || y || w || h)) {
w = ~w;
}
if (!drw || !drw->scheme) {
return 0;
} else if (render) {
XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->fg->pix : drw->scheme->bg->pix);
XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
}
if (!text || !drw->fontcount) {
return 0;
} else if (render) {
cmap = DefaultColormap(drw->dpy, drw->screen);
vis = DefaultVisual(drw->dpy, drw->screen);
d = XftDrawCreate(drw->dpy, drw->drawable, vis, cmap);
}
curfont = drw->fonts[0];
while (1) {
utf8strlen = 0;
utf8str = text;
nextfont = NULL;
while (*text) {
utf8charlen = utf8decode(text, &utf8codepoint, UTF_SIZ);
for (i = 0; i < drw->fontcount; i++) {
charexists = charexists || XftCharExists(drw->dpy, drw->fonts[i]->xfont, utf8codepoint);
if (charexists) {
if (drw->fonts[i] == curfont) {
utf8strlen += utf8charlen;
text += utf8charlen;
} else {
nextfont = drw->fonts[i];
}
break;
}
}
if (!charexists || (nextfont && nextfont != curfont)) {
break;
} else {
charexists = 0;
}
}
if (utf8strlen) {
drw_font_getexts(curfont, utf8str, utf8strlen, &tex);
/* shorten text if necessary */
for(len = MIN(utf8strlen, (sizeof buf) - 1); len && (tex.w > w - drw->fonts[0]->h || w < drw->fonts[0]->h); len--)
drw_font_getexts(curfont, utf8str, len, &tex);
if (len) {
memcpy(buf, utf8str, len);
buf[len] = '\0';
if(len < utf8strlen)
for(i = len; i && i > len - 3; buf[--i] = '.');
if (render) {
th = curfont->ascent + curfont->descent;
ty = y + (h / 2) - (th / 2) + curfont->ascent;
tx = x + (h / 2);
XftDrawStringUtf8(d, invert ? &drw->scheme->bg->rgb : &drw->scheme->fg->rgb, curfont->xfont, tx, ty, (XftChar8 *)buf, len);
}
x += tex.w;
w -= tex.w;
}
}
if (!*text) {
break;
} else if (nextfont) {
charexists = 0;
curfont = nextfont;
} else {
/* Regardless of whether or not a fallback font is found, the
* character must be drawn.
*/
charexists = 1;
if (drw->fontcount >= DRW_FONT_CACHE_SIZE) {
continue;
}
fccharset = FcCharSetCreate();
FcCharSetAddChar(fccharset, utf8codepoint);
if (!drw->fonts[0]->pattern) {
/* Refer to the comment in drw_font_xcreate for more
* information.
*/
die("The first font in the cache must be loaded from a font string.\n");
}
fcpattern = FcPatternDuplicate(drw->fonts[0]->pattern);
FcPatternAddCharSet(fcpattern, FC_CHARSET, fccharset);
FcPatternAddBool(fcpattern, FC_SCALABLE, FcTrue);
FcConfigSubstitute(NULL, fcpattern, FcMatchPattern);
FcDefaultSubstitute(fcpattern);
match = XftFontMatch(drw->dpy, drw->screen, fcpattern, &result);
FcCharSetDestroy(fccharset);
FcPatternDestroy(fcpattern);
if (match) {
curfont = drw_font_xcreate(drw, NULL, match);
if (curfont && XftCharExists(drw->dpy, curfont->xfont, utf8codepoint)) {
drw->fonts[drw->fontcount++] = curfont;
} else {
if (curfont) {
drw_font_free(curfont);
}
curfont = drw->fonts[0];
}
}
}
}
if (render) {
XftDrawDestroy(d);
}
return x;
}
void
drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h) {
if(!drw)
return;
XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y);
XSync(drw->dpy, False);
}
void
drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *tex) {
XGlyphInfo ext;
if(!font || !text)
return;
XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext);
tex->h = font->h;
tex->w = ext.xOff;
}
unsigned int
drw_font_getexts_width(Fnt *font, const char *text, unsigned int len) {
Extnts tex;
if(!font)
return -1;
drw_font_getexts(font, text, len, &tex);
return tex.w;
}
Cur *
drw_cur_create(Drw *drw, int shape) {
Cur *cur;
if(!drw)
return NULL;
cur = (Cur *)calloc(1, sizeof(Cur));
if (!cur)
return NULL;
cur->cursor = XCreateFontCursor(drw->dpy, shape);
return cur;
}
void
drw_cur_free(Drw *drw, Cur *cursor) {
if(!drw || !cursor)
return;
XFreeCursor(drw->dpy, cursor->cursor);
free(cursor);
}

74
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/* See LICENSE file for copyright and license details. */
#define DRW_FONT_CACHE_SIZE 32
typedef struct {
unsigned long pix;
XftColor rgb;
} Clr;
typedef struct {
Cursor cursor;
} Cur;
typedef struct {
Display *dpy;
int ascent;
int descent;
unsigned int h;
XftFont *xfont;
FcPattern *pattern;
} Fnt;
typedef struct {
Clr *fg;
Clr *bg;
Clr *border;
} ClrScheme;
typedef struct {
unsigned int w, h;
Display *dpy;
int screen;
Window root;
Drawable drawable;
GC gc;
ClrScheme *scheme;
size_t fontcount;
Fnt *fonts[DRW_FONT_CACHE_SIZE];
} Drw;
typedef struct {
unsigned int w;
unsigned int h;
} Extnts;
/* Drawable abstraction */
Drw *drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h);
void drw_resize(Drw *drw, unsigned int w, unsigned int h);
void drw_free(Drw *drw);
/* Fnt abstraction */
Fnt *drw_font_create(Drw *drw, const char *fontname);
void drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount);
void drw_font_free(Fnt *font);
void drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *extnts);
unsigned int drw_font_getexts_width(Fnt *font, const char *text, unsigned int len);
/* Colour abstraction */
Clr *drw_clr_create(Drw *drw, const char *clrname);
void drw_clr_free(Clr *clr);
/* Cursor abstraction */
Cur *drw_cur_create(Drw *drw, int shape);
void drw_cur_free(Drw *drw, Cur *cursor);
/* Drawing context manipulation */
void drw_setfont(Drw *drw, Fnt *font);
void drw_setscheme(Drw *drw, ClrScheme *scheme);
/* Drawing functions */
void drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert);
int drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert);
/* Map functions */
void drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h);

23
util.c
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/* See LICENSE file for copyright and license details. */
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "util.h"
void
die(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
fputc(' ', stderr);
perror(NULL);
}
exit(1);
}

7
util.h
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/* See LICENSE file for copyright and license details. */
#define MAX(A, B) ((A) > (B) ? (A) : (B))
#define MIN(A, B) ((A) < (B) ? (A) : (B))
#define BETWEEN(X, A, B) ((A) <= (X) && (X) <= (B))
void die(const char *errstr, ...);
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