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initial dmenu / dinput separation

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This commit is contained in:
Connor Lane Smith 2010-06-23 12:04:54 +01:00
parent bff1526d31
commit b4e63454e5
4 changed files with 561 additions and 205 deletions
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17
Makefile
View File

@ -3,10 +3,10 @@
include config.mk
SRC = dmenu.c
SRC = dinput.c dmenu.c draw.c
OBJ = ${SRC:.c=.o}
all: options dmenu
all: options dinput dmenu
options:
@echo dmenu build options:
@ -18,19 +18,19 @@ options:
@echo CC $<
@${CC} -c ${CFLAGS} $<
${OBJ}: config.h config.mk
${OBJ}: config.h config.mk draw.c
config.h:
@echo creating $@ from config.def.h
@cp config.def.h $@
dmenu: ${OBJ}
.o:
@echo CC -o $@
@${CC} -o $@ ${OBJ} ${LDFLAGS}
@${CC} -o $@ $< ${LDFLAGS}
clean:
@echo cleaning
@rm -f dmenu ${OBJ} dmenu-${VERSION}.tar.gz
@rm -f dinput dmenu ${OBJ} dmenu-${VERSION}.tar.gz
dist: clean
@echo creating dist tarball
@ -43,7 +43,8 @@ dist: clean
install: all
@echo installing executable file to ${DESTDIR}${PREFIX}/bin
@mkdir -p ${DESTDIR}${PREFIX}/bin
@cp -f dmenu dmenu_path dmenu_run ${DESTDIR}${PREFIX}/bin
@cp -f dinput dmenu dmenu_path dmenu_run ${DESTDIR}${PREFIX}/bin
@chmod 755 ${DESTDIR}${PREFIX}/bin/dinput
@chmod 755 ${DESTDIR}${PREFIX}/bin/dmenu
@chmod 755 ${DESTDIR}${PREFIX}/bin/dmenu_path
@chmod 755 ${DESTDIR}${PREFIX}/bin/dmenu_run
@ -55,7 +56,7 @@ install: all
uninstall:
@echo removing executable file from ${DESTDIR}${PREFIX}/bin
@rm -f ${DESTDIR}${PREFIX}/bin/dmenu ${DESTDIR}${PREFIX}/bin/dmenu_path
@rm -f ${DESTDIR}${PREFIX}/bin/dmenu ${DESTDIR}${PREFIX}/bin/dmenu_run
@rm -f ${DESTDIR}${PREFIX}/bin/dinput ${DESTDIR}${PREFIX}/bin/dmenu_run
@echo removing manual page from ${DESTDIR}${MANPREFIX}/man1
@rm -f ${DESTDIR}${MANPREFIX}/man1/dmenu.1

387
dinput.c Normal file
View File

@ -0,0 +1,387 @@
/* See LICENSE file for copyright and license details. */
#include <ctype.h>
#include <locale.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <X11/keysym.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#ifdef XINERAMA
#include <X11/extensions/Xinerama.h>
#endif
/* macros */
#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
#define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define IS_UTF8_1ST_CHAR(c) ((((c) & 0xc0) == 0xc0) || !((c) & 0x80))
/* forward declarations */
static void cleanup(void);
static void drawcursor(void);
static void drawinput(void);
static void eprint(const char *errstr, ...);
static Bool grabkeyboard(void);
static void kpress(XKeyEvent * e);
static void run(void);
static void setup(Bool topbar);
#include "config.h"
/* variables */
static char *prompt = NULL;
static char text[4096];
static int promptw = 0;
static int ret = 0;
static int screen;
static unsigned int mw, mh;
static unsigned int cursor = 0;
static unsigned int numlockmask = 0;
static Bool running = True;
static Display *dpy;
static Window parent, win;
#include "draw.c"
void
cleanup(void) {
dccleanup();
XDestroyWindow(dpy, win);
XUngrabKeyboard(dpy, CurrentTime);
}
void
drawcursor(void) {
XRectangle r = { dc.x, dc.y + 2, 1, dc.font.height - 2 };
r.x += textnw(text, cursor) + dc.font.height / 2;
XSetForeground(dpy, dc.gc, dc.norm[ColFG]);
XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
}
void
drawinput(void)
{
dc.x = 0;
dc.y = 0;
dc.w = mw;
dc.h = mh;
drawtext(NULL, dc.norm);
/* print prompt? */
if(prompt) {
dc.w = promptw;
drawtext(prompt, dc.sel);
dc.x += dc.w;
}
dc.w = mw - dc.x;
drawtext(*text ? text : NULL, dc.norm);
drawcursor();
XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, mw, mh, 0, 0);
XFlush(dpy);
}
void
eprint(const char *errstr, ...) {
va_list ap;
va_start(ap, errstr);
vfprintf(stderr, errstr, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
Bool
grabkeyboard(void) {
unsigned int len;
for(len = 1000; len; len--) {
if(XGrabKeyboard(dpy, parent, True, GrabModeAsync, GrabModeAsync, CurrentTime)
== GrabSuccess)
break;
usleep(1000);
}
return len > 0;
}
void
kpress(XKeyEvent * e) {
char buf[sizeof text];
int num;
unsigned int i, len;
KeySym ksym;
len = strlen(text);
num = XLookupString(e, buf, sizeof buf, &ksym, NULL);
if(ksym == XK_KP_Enter)
ksym = XK_Return;
else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
ksym = (ksym - XK_KP_0) + XK_0;
else if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
|| IsMiscFunctionKey(ksym) || IsPFKey(ksym)
|| IsPrivateKeypadKey(ksym))
return;
/* first check if a control mask is omitted */
if(e->state & ControlMask) {
switch(tolower(ksym)) {
default:
return;
case XK_a:
ksym = XK_Home;
break;
case XK_b:
ksym = XK_Left;
break;
case XK_c:
ksym = XK_Escape;
break;
case XK_e:
ksym = XK_End;
break;
case XK_f:
ksym = XK_Right;
break;
case XK_h:
ksym = XK_BackSpace;
break;
case XK_j:
ksym = XK_Return;
break;
case XK_k:
text[cursor] = '\0';
break;
case XK_u:
memmove(text, text + cursor, sizeof text - cursor + 1);
cursor = 0;
break;
case XK_w:
if(cursor > 0) {
i = cursor;
while(i-- > 0 && text[i] == ' ');
while(i-- > 0 && text[i] != ' ');
memmove(text + i + 1, text + cursor, sizeof text - cursor + 1);
cursor = i + 1;
}
break;
case XK_y:
{
FILE *fp;
char *s;
if(!(fp = popen("sselp", "r")))
eprint("dinput: cannot popen sselp\n");
s = fgets(buf, sizeof buf, fp);
pclose(fp);
if(s == NULL)
return;
}
num = strlen(buf);
if(num && buf[num-1] == '\n')
buf[--num] = '\0';
break;
}
}
switch(ksym) {
default:
num = MIN(num, sizeof text - cursor);
if(num && !iscntrl((int) buf[0])) {
memmove(text + cursor + num, text + cursor, sizeof text - cursor - num);
memcpy(text + cursor, buf, num);
cursor += num;
}
break;
case XK_BackSpace:
if(cursor == 0)
return;
for(i = 1; cursor - i > 0 && !IS_UTF8_1ST_CHAR(text[cursor - i]); i++);
memmove(text + cursor - i, text + cursor, sizeof text - cursor + i);
cursor -= i;
break;
case XK_Delete:
if(cursor == len)
return;
for(i = 1; cursor + i < len && !IS_UTF8_1ST_CHAR(text[cursor + i]); i++);
memmove(text + cursor, text + cursor + i, sizeof text - cursor);
break;
case XK_End:
cursor = len;
break;
case XK_Escape:
ret = 1;
running = False;
return;
case XK_Home:
cursor = 0;
break;
case XK_Left:
if(cursor == 0)
return;
while(cursor-- > 0 && !IS_UTF8_1ST_CHAR(text[cursor]));
break;
case XK_Return:
fprintf(stdout, "%s", text);
fflush(stdout);
running = False;
return;
case XK_Right:
if(cursor == len)
return;
while(cursor++ < len && !IS_UTF8_1ST_CHAR(text[cursor]));
break;
}
drawinput();
}
void
run(void) {
XEvent ev;
/* main event loop */
while(running && !XNextEvent(dpy, &ev))
switch (ev.type) {
case KeyPress:
kpress(&ev.xkey);
break;
case Expose:
if(ev.xexpose.count == 0)
drawinput();
break;
case VisibilityNotify:
if (ev.xvisibility.state != VisibilityUnobscured)
XRaiseWindow(dpy, win);
break;
}
}
void
setup(Bool topbar) {
int i, j, x, y;
#if XINERAMA
int n;
XineramaScreenInfo *info = NULL;
#endif
XModifierKeymap *modmap;
XSetWindowAttributes wa;
XWindowAttributes pwa;
/* init modifier map */
modmap = XGetModifierMapping(dpy);
for(i = 0; i < 8; i++)
for(j = 0; j < modmap->max_keypermod; j++) {
if(modmap->modifiermap[i * modmap->max_keypermod + j]
== XKeysymToKeycode(dpy, XK_Num_Lock))
numlockmask = (1 << i);
}
XFreeModifiermap(modmap);
/* style */
dc.norm[ColBG] = getcolor(normbgcolor);
dc.norm[ColFG] = getcolor(normfgcolor);
dc.sel[ColBG] = getcolor(selbgcolor);
dc.sel[ColFG] = getcolor(selfgcolor);
initfont(font);
/* menu window */
wa.override_redirect = True;
wa.background_pixmap = ParentRelative;
wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask | VisibilityChangeMask;
/* menu window geometry */
mh = (dc.font.height + 2);
#if XINERAMA
if(parent == RootWindow(dpy, screen) && XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
i = 0;
if(n > 1) {
int di;
unsigned int dui;
Window dummy;
if(XQueryPointer(dpy, parent, &dummy, &dummy, &x, &y, &di, &di, &dui))
for(i = 0; i < n; i++)
if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
break;
}
x = info[i].x_org;
y = topbar ? info[i].y_org : info[i].y_org + info[i].height - mh;
mw = info[i].width;
XFree(info);
}
else
#endif
{
XGetWindowAttributes(dpy, parent, &pwa);
x = 0;
y = topbar ? 0 : pwa.height - mh;
mw = pwa.width;
}
win = XCreateWindow(dpy, parent, x, y, mw, mh, 0,
DefaultDepth(dpy, screen), CopyFromParent,
DefaultVisual(dpy, screen),
CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
/* pixmap */
dcsetup();
if(prompt)
promptw = MIN(textw(prompt), mw / 5);
cursor = strlen(text);
XMapRaised(dpy, win);
}
int
main(int argc, char *argv[]) {
unsigned int i;
Bool topbar = True;
/* command line args */
for(i = 1; i < argc; i++)
if(!strcmp(argv[i], "-b"))
topbar = False;
else if(!strcmp(argv[i], "-e")) {
if(++i < argc) parent = atoi(argv[i]);
}
else if(!strcmp(argv[i], "-fn")) {
if(++i < argc) font = argv[i];
}
else if(!strcmp(argv[i], "-nb")) {
if(++i < argc) normbgcolor = argv[i];
}
else if(!strcmp(argv[i], "-nf")) {
if(++i < argc) normfgcolor = argv[i];
}
else if(!strcmp(argv[i], "-p")) {
if(++i < argc) prompt = argv[i];
}
else if(!strcmp(argv[i], "-sb")) {
if(++i < argc) selbgcolor = argv[i];
}
else if(!strcmp(argv[i], "-sf")) {
if(++i < argc) selfgcolor = argv[i];
}
else if(!strcmp(argv[i], "-v"))
eprint("dinput-"VERSION", © 2006-2010 dinput engineers, see LICENSE for details\n");
else if(!*text)
strncpy(text, argv[i], sizeof text);
else
eprint("usage: dinput [-b] [-e <xid>] [-fn <font>] [-nb <color>] [-nf <color>]\n"
" [-p <prompt>] [-sb <color>] [-sf <color>] [-v] [<text>]\n");
if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
fprintf(stderr, "dinput: warning: no locale support\n");
if(!(dpy = XOpenDisplay(NULL)))
eprint("dinput: cannot open display\n");
screen = DefaultScreen(dpy);
if(!parent)
parent = RootWindow(dpy, screen);
running = grabkeyboard();
setup(topbar);
drawinput();
XSync(dpy, False);
run();
cleanup();
XCloseDisplay(dpy);
return ret;
}

219
dmenu.c
View File

@ -21,25 +21,6 @@
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define IS_UTF8_1ST_CHAR(c) ((((c) & 0xc0) == 0xc0) || !((c) & 0x80))
/* enums */
enum { ColFG, ColBG, ColLast };
/* typedefs */
typedef struct {
int x, y, w, h;
unsigned long norm[ColLast];
unsigned long sel[ColLast];
Drawable drawable;
GC gc;
struct {
XFontStruct *xfont;
XFontSet set;
int ascent;
int descent;
int height;
} font;
} DC; /* draw context */
typedef struct Item Item;
struct Item {
char *text;
@ -53,22 +34,16 @@ static void calcoffsetsh(void);
static void calcoffsetsv(void);
static char *cistrstr(const char *s, const char *sub);
static void cleanup(void);
static void drawcursor(void);
static void drawmenu(void);
static void drawmenuh(void);
static void drawmenuv(void);
static void drawtext(const char *text, unsigned long col[ColLast]);
static void eprint(const char *errstr, ...);
static unsigned long getcolor(const char *colstr);
static Bool grabkeyboard(void);
static void initfont(const char *fontstr);
static void kpress(XKeyEvent * e);
static void match(char *pattern);
static void readstdin(void);
static void run(void);
static void setup(Bool topbar);
static int textnw(const char *text, unsigned int len);
static int textw(const char *text);
#include "config.h"
@ -81,11 +56,9 @@ static int promptw = 0;
static int ret = 0;
static int screen;
static unsigned int mw, mh;
static unsigned int cursor = 0;
static unsigned int numlockmask = 0;
static Bool running = True;
static Display *dpy;
static DC dc;
static Item *allitems = NULL; /* first of all items */
static Item *item = NULL; /* first of pattern matching items */
static Item *sel = NULL;
@ -98,6 +71,8 @@ static char *(*fstrstr)(const char *, const char *) = strstr;
static unsigned int lines = 0;
static void (*calcoffsets)(void) = calcoffsetsh;
#include "draw.c"
void
appenditem(Item *i, Item **list, Item **last) {
if(!(*last))
@ -161,26 +136,11 @@ cistrstr(const char *s, const char *sub) {
void
cleanup(void) {
if(dc.font.set)
XFreeFontSet(dpy, dc.font.set);
else
XFreeFont(dpy, dc.font.xfont);
XFreePixmap(dpy, dc.drawable);
XFreeGC(dpy, dc.gc);
dccleanup();
XDestroyWindow(dpy, win);
XUngrabKeyboard(dpy, CurrentTime);
}
void
drawcursor(void) {
XRectangle r = { dc.x, dc.y + 2, 1, dc.font.height - 2 };
r.x += textnw(text, cursor) + dc.font.height / 2;
XSetForeground(dpy, dc.gc, dc.norm[ColFG]);
XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
}
void
drawmenu(void) {
dc.x = 0;
@ -199,7 +159,6 @@ drawmenu(void) {
if(cmdw && item && lines == 0)
dc.w = cmdw;
drawtext(*text ? text : NULL, dc.norm);
drawcursor();
if(curr) {
if(lines > 0)
drawmenuv();
@ -243,34 +202,6 @@ drawmenuv(void) {
drawtext(NULL, dc.norm);
}
void
drawtext(const char *text, unsigned long col[ColLast]) {
char buf[256];
int i, x, y, h, len, olen;
XRectangle r = { dc.x, dc.y, dc.w, dc.h };
XSetForeground(dpy, dc.gc, col[ColBG]);
XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
if(!text)
return;
olen = strlen(text);
h = dc.font.height;
y = dc.y + ((h+2) / 2) - (h / 2) + dc.font.ascent;
x = dc.x + (h / 2);
/* shorten text if necessary */
for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
if(!len)
return;
memcpy(buf, text, len);
if(len < olen)
for(i = len; i && i > len - 3; buf[--i] = '.');
XSetForeground(dpy, dc.gc, col[ColFG]);
if(dc.font.set)
XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
else
XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
}
void
eprint(const char *errstr, ...) {
va_list ap;
@ -281,16 +212,6 @@ eprint(const char *errstr, ...) {
exit(EXIT_FAILURE);
}
unsigned long
getcolor(const char *colstr) {
Colormap cmap = DefaultColormap(dpy, screen);
XColor color;
if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
eprint("dmenu: cannot allocate color '%s'\n", colstr);
return color.pixel;
}
Bool
grabkeyboard(void) {
unsigned int len;
@ -304,37 +225,6 @@ grabkeyboard(void) {
return len > 0;
}
void
initfont(const char *fontstr) {
char *def, **missing = NULL;
int i, n;
if(!fontstr || fontstr[0] == '\0')
eprint("dmenu: cannot load font: '%s'\n", fontstr);
dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
if(missing)
XFreeStringList(missing);
if(dc.font.set) {
XFontStruct **xfonts;
char **font_names;
dc.font.ascent = dc.font.descent = 0;
n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
for(i = 0; i < n; i++) {
dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
dc.font.descent = MAX(dc.font.descent, (*xfonts)->descent);
xfonts++;
}
}
else {
if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
&& !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
eprint("dmenu: cannot load font: '%s'\n", fontstr);
dc.font.ascent = dc.font.xfont->ascent;
dc.font.descent = dc.font.xfont->descent;
}
dc.font.height = dc.font.ascent + dc.font.descent;
}
void
kpress(XKeyEvent * e) {
char buf[sizeof text];
@ -381,9 +271,6 @@ kpress(XKeyEvent * e) {
case XK_j:
ksym = XK_Return;
break;
case XK_k:
text[cursor] = '\0';
break;
case XK_n:
ksym = XK_Down;
break;
@ -391,67 +278,42 @@ kpress(XKeyEvent * e) {
ksym = XK_Up;
break;
case XK_u:
memmove(text, text + cursor, sizeof text - cursor + 1);
cursor = 0;
text[0] = '\0';
match(text);
break;
case XK_w:
if(cursor > 0) {
i = cursor;
while(i-- > 0 && text[i] == ' ');
while(i-- > 0 && text[i] != ' ');
memmove(text + i + 1, text + cursor, sizeof text - cursor + 1);
cursor = i + 1;
match(text);
}
if(len == 0)
return;
i = len;
while(i-- > 0 && text[i] == ' ');
while(i-- > 0 && text[i] != ' ');
text[++i] = '\0';
match(text);
break;
case XK_y:
{
FILE *fp;
char *s;
if(!(fp = popen("sselp", "r")))
eprint("dmenu: cannot popen sselp\n");
s = fgets(buf, sizeof buf, fp);
pclose(fp);
if(s == NULL)
return;
}
num = strlen(buf);
if(num && buf[num-1] == '\n')
buf[--num] = '\0';
case XK_x:
execlp("dinput", "dinput", text, NULL); /* todo: argv */
eprint("dmenu: cannot exec dinput:");
break;
}
}
switch(ksym) {
default:
num = MIN(num, sizeof text - cursor);
num = MIN(num, sizeof text);
if(num && !iscntrl((int) buf[0])) {
memmove(text + cursor + num, text + cursor, sizeof text - cursor - num);
memcpy(text + cursor, buf, num);
cursor += num;
memcpy(text + len, buf, num + 1);
len += num;
match(text);
}
break;
case XK_BackSpace:
if(cursor == 0)
if(len == 0)
return;
for(i = 1; cursor - i > 0 && !IS_UTF8_1ST_CHAR(text[cursor - i]); i++);
memmove(text + cursor - i, text + cursor, sizeof text - cursor + i);
cursor -= i;
match(text);
break;
case XK_Delete:
if(cursor == len)
return;
for(i = 1; cursor + i < len && !IS_UTF8_1ST_CHAR(text[cursor + i]); i++);
memmove(text + cursor, text + cursor + i, sizeof text - cursor);
for(i = 1; len - i > 0 && !IS_UTF8_1ST_CHAR(text[len - i]); i++);
len -= i;
text[len] = '\0';
match(text);
break;
case XK_End:
if(cursor < len) {
cursor = len;
break;
}
while(next) {
sel = curr = next;
calcoffsets();
@ -464,20 +326,10 @@ kpress(XKeyEvent * e) {
running = False;
return;
case XK_Home:
if(sel == item) {
cursor = 0;
break;
}
sel = curr = item;
calcoffsets();
break;
case XK_Left:
if(cursor > 0 && (!sel || !sel->left || lines > 0)) {
while(cursor-- > 0 && !IS_UTF8_1ST_CHAR(text[cursor]));
break;
}
if(lines > 0)
return;
case XK_Up:
if(!sel || !sel->left)
return;
@ -508,12 +360,6 @@ kpress(XKeyEvent * e) {
running = False;
return;
case XK_Right:
if(cursor < len) {
while(cursor++ < len && !IS_UTF8_1ST_CHAR(text[cursor]));
break;
}
if(lines > 0)
return;
case XK_Down:
if(!sel || !sel->right)
return;
@ -527,7 +373,6 @@ kpress(XKeyEvent * e) {
if(!sel)
return;
strncpy(text, sel->text, sizeof text);
cursor = strlen(text);
match(text);
break;
}
@ -690,11 +535,7 @@ setup(Bool topbar) {
CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
/* pixmap */
dc.drawable = XCreatePixmap(dpy, parent, mw, mh, DefaultDepth(dpy, screen));
dc.gc = XCreateGC(dpy, parent, 0, NULL);
XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
if(!dc.font.set)
XSetFont(dpy, dc.gc, dc.font.xfont->fid);
dcsetup();
if(maxname)
cmdw = MIN(textw(maxname), mw / 3);
if(prompt)
@ -704,22 +545,6 @@ setup(Bool topbar) {
XMapRaised(dpy, win);
}
int
textnw(const char *text, unsigned int len) {
XRectangle r;
if(dc.font.set) {
XmbTextExtents(dc.font.set, text, len, NULL, &r);
return r.width;
}
return XTextWidth(dc.font.xfont, text, len);
}
int
textw(const char *text) {
return textnw(text, strlen(text)) + dc.font.height;
}
int
main(int argc, char *argv[]) {
unsigned int i;

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/* See LICENSE file for copyright and license details. */
/* enums */
enum { ColFG, ColBG, ColLast };
/* typedefs */
typedef struct {
int x, y, w, h;
unsigned long norm[ColLast];
unsigned long sel[ColLast];
Drawable drawable;
GC gc;
struct {
XFontStruct *xfont;
XFontSet set;
int ascent;
int descent;
int height;
} font;
} DC; /* draw context */
/* forward declarations */
static void dccleanup(void);
static void dcsetup(void);
static void drawtext(const char *text, unsigned long col[ColLast]);
static unsigned long getcolor(const char *colstr);
static void initfont(const char *fontstr);
static int textnw(const char *text, unsigned int len);
static int textw(const char *text);
static DC dc;
void
dccleanup(void) {
if(dc.font.set)
XFreeFontSet(dpy, dc.font.set);
else
XFreeFont(dpy, dc.font.xfont);
XFreePixmap(dpy, dc.drawable);
XFreeGC(dpy, dc.gc);
}
void
dcsetup() {
/* style */
dc.norm[ColBG] = getcolor(normbgcolor);
dc.norm[ColFG] = getcolor(normfgcolor);
dc.sel[ColBG] = getcolor(selbgcolor);
dc.sel[ColFG] = getcolor(selfgcolor);
initfont(font);
/* pixmap */
dc.drawable = XCreatePixmap(dpy, parent, mw, mh, DefaultDepth(dpy, screen));
dc.gc = XCreateGC(dpy, parent, 0, NULL);
XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
if(!dc.font.set)
XSetFont(dpy, dc.gc, dc.font.xfont->fid);
}
void
drawtext(const char *text, unsigned long col[ColLast]) {
char buf[256];
int i, x, y, h, len, olen;
XRectangle r = { dc.x, dc.y, dc.w, dc.h };
XSetForeground(dpy, dc.gc, col[ColBG]);
XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
if(!text)
return;
olen = strlen(text);
h = dc.font.height;
y = dc.y + ((h+2) / 2) - (h / 2) + dc.font.ascent;
x = dc.x + (h / 2);
/* shorten text if necessary */
for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
if(!len)
return;
memcpy(buf, text, len);
if(len < olen)
for(i = len; i && i > len - 3; buf[--i] = '.');
XSetForeground(dpy, dc.gc, col[ColFG]);
if(dc.font.set)
XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
else
XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
}
unsigned long
getcolor(const char *colstr) {
Colormap cmap = DefaultColormap(dpy, screen);
XColor color;
if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
eprint("drawtext: cannot allocate color '%s'\n", colstr);
return color.pixel;
}
void
initfont(const char *fontstr) {
char *def, **missing = NULL;
int i, n;
if(!fontstr || fontstr[0] == '\0')
eprint("drawtext: cannot load font: '%s'\n", fontstr);
dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
if(missing)
XFreeStringList(missing);
if(dc.font.set) {
XFontStruct **xfonts;
char **font_names;
dc.font.ascent = dc.font.descent = 0;
n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
for(i = 0; i < n; i++) {
dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
dc.font.descent = MAX(dc.font.descent, (*xfonts)->descent);
xfonts++;
}
}
else {
if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
&& !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
eprint("drawtext: cannot load font: '%s'\n", fontstr);
dc.font.ascent = dc.font.xfont->ascent;
dc.font.descent = dc.font.xfont->descent;
}
dc.font.height = dc.font.ascent + dc.font.descent;
}
int
textnw(const char *text, unsigned int len) {
XRectangle r;
if(dc.font.set) {
XmbTextExtents(dc.font.set, text, len, NULL, &r);
return r.width;
}
return XTextWidth(dc.font.xfont, text, len);
}
int
textw(const char *text) {
return textnw(text, strlen(text)) + dc.font.height;
}