swytch/dmenu
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implemented early keyboard grab for dmenu with a timeout for stdin data writers to prevent endless grabbings of the keyboard

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This commit is contained in:
Anselm R. Garbe 2006-09-08 07:33:20 +02:00
parent 0fa5a339ff
commit 32f7fe4835
3 changed files with 21 additions and 4 deletions
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1
config.arg.h
View File

@ -8,3 +8,4 @@
#define SELFGCOLOR "#eeeeee"
#define NORMBGCOLOR "#333333"
#define NORMFGCOLOR "#dddddd"
#define STDIN_TIMEOUT 3 /* seconds */

1
config.default.h
View File

@ -8,3 +8,4 @@
#define SELFGCOLOR "#eeeeee"
#define NORMBGCOLOR "#333366"
#define NORMFGCOLOR "#cccccc"
#define STDIN_TIMEOUT 3 /* seconds */

23
main.c
View File

@ -11,6 +11,8 @@
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/select.h>
#include <sys/time.h>
#include <X11/cursorfont.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
@ -290,6 +292,8 @@ int
main(int argc, char *argv[])
{
char *maxname;
fd_set rd;
struct timeval timeout;
Item *i;
XEvent ev;
XSetWindowAttributes wa;
@ -307,13 +311,23 @@ main(int argc, char *argv[])
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
maxname = readstdin();
/* grab as early as possible, but after reading all items!!! */
/* Note, the select() construction allows to grab all keypresses as
* early as possible, to not loose them. But if there is no standard
* input supplied, we will make sure to exit after MAX_WAIT_STDIN
* seconds. This is convenience behavior for rapid typers.
*/
while(XGrabKeyboard(dpy, root, True, GrabModeAsync,
GrabModeAsync, CurrentTime) != GrabSuccess)
usleep(1000);
timeout.tv_usec = 0;
timeout.tv_sec = STDIN_TIMEOUT;
FD_ZERO(&rd);
FD_SET(STDIN_FILENO, &rd);
if(select(ConnectionNumber(dpy) + 1, &rd, NULL, NULL, &timeout) < 1)
goto UninitializedEnd;
maxname = readstdin();
/* style */
dc.sel[ColBG] = getcolor(SELBGCOLOR);
dc.sel[ColFG] = getcolor(SELFGCOLOR);
@ -366,7 +380,6 @@ main(int argc, char *argv[])
}
}
XUngrabKeyboard(dpy, CurrentTime);
while(allitems) {
i = allitems->next;
free(allitems->text);
@ -380,6 +393,8 @@ main(int argc, char *argv[])
XFreePixmap(dpy, dc.drawable);
XFreeGC(dpy, dc.gc);
XDestroyWindow(dpy, win);
UninitializedEnd:
XUngrabKeyboard(dpy, CurrentTime);
XCloseDisplay(dpy);
return ret;