dinput.c
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/* See LICENSE file for copyright and license details. */
#include <ctype.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/keysym.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include "dmenu.h"
/* forward declarations */
static void cleanup(void);
/* variables */
static size_t cursor = 0;
void
cleanup(void) {
cleanupdraw(&dc);
XDestroyWindow(dpy, win);
XUngrabKeyboard(dpy, CurrentTime);
XCloseDisplay(dpy);
}
void
drawbar(void)
{
dc.x = 0;
dc.y = 0;
dc.w = mw;
dc.h = mh;
drawbox(&dc, normcol);
/* print prompt? */
if(prompt) {
dc.w = promptw;
drawbox(&dc, selcol);
drawtext(&dc, prompt, selcol);
dc.x += dc.w;
}
dc.w = mw - dc.x;
drawtext(&dc, text, normcol);
drawline(&dc, textnw(&dc, text, cursor) + dc.font.height/2, 2, 1,
dc.font.height-2, normcol);
commitdraw(&dc, win);
}
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:
case XK_m:
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("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:
exit(EXIT_FAILURE);
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);
exit(EXIT_SUCCESS);
case XK_Right:
if(cursor == len)
return;
while(cursor++ < len && !IS_UTF8_1ST_CHAR(text[cursor]));
break;
}
drawbar();
}
int
main(int argc, char *argv[]) {
unsigned int i;
/* command line args */
progname = "dinput";
for(i = 1; i < argc; i++)
if(!strcmp(argv[i], "-i"))
; /* ignore flag */
else if(!strcmp(argv[i], "-b"))
topbar = False;
else if(!strcmp(argv[i], "-l"))
i++; /* ignore flag */
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")) {
printf("dinput-"VERSION", © 2006-2010 dmenu engineers, see LICENSE for details\n");
exit(EXIT_SUCCESS);
}
else if(!*text) {
strncpy(text, argv[i], sizeof text);
cursor = strlen(text);
}
else {
fputs("usage: dinput [-b] [-fn <font>] [-nb <color>] [-nf <color>]\n"
" [-p <prompt>] [-sb <color>] [-sf <color>] [-v] [<text>]\n", stderr);
exit(EXIT_FAILURE);
}
if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
fprintf(stderr, "dinput: warning: no locale support\n");
if(!(dpy = XOpenDisplay(NULL)))
eprint("cannot open display\n");
if(atexit(&cleanup) != 0)
eprint("cannot register cleanup\n");
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
grabkeyboard();
setup(0);
run();
return 0;
}