mraber/xmenu
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Make xmenu wait for another process to ungrab

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Xmenu didn't wait for another process to ungrab the poiter or keyboard,
ending up in erroneous behavior.  Now it waits.
This commit is contained in:
phillbush 2020-05-19 09:17:06 -03:00
parent c49dad285c
commit 85003546a2
1 changed files with 39 additions and 16 deletions
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55
xmenu.c
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@ -77,13 +77,14 @@ static void getcolor(const char *s, XftColor *color);
static void getresources(void);
static void setupdc(void);
static void setupgeom(void);
static void setupgrab(void);
static struct Item *allocitem(const char *label, const char *output);
static struct Menu *allocmenu(struct Menu *parent, struct Item *list, unsigned level);
static void getmenuitem(Window win, int y, struct Menu **menu_ret, struct Item **item_ret);
static void drawmenu(void);
static void calcscreengeom(void);
static void calcmenu(struct Menu *menu);
static void grabpointer(void);
static void grabkeyboard(void);
static void setcurrmenu(struct Menu *currmenu_new);
static void parsestdin(void);
static void run(void);
@ -156,8 +157,10 @@ main(int argc, char *argv[])
calcmenu(rootmenu);
/* grab mouse and keyboard */
if (override_redirect)
setupgrab();
if (override_redirect) {
grabpointer();
grabkeyboard();
}
/* map root menu */
currmenu = rootmenu;
@ -256,19 +259,6 @@ setupgeom(void)
geom.separator = separatorsize;
}
/* grab pointer */
static void
setupgrab(void)
{
if (XGrabPointer(dpy, rootwin, True, ButtonPressMask,
GrabModeAsync, GrabModeAsync, None,
None, CurrentTime) != GrabSuccess)
errx(1, "cannot grab pointer");
if (XGrabKeyboard(dpy, rootwin, True, GrabModeAsync,
GrabModeAsync, CurrentTime) != GrabSuccess)
errx(1, "cannot grab keyboard");
}
/* allocate an item */
static struct Item *
allocitem(const char *label, const char *output)
@ -523,6 +513,39 @@ calcmenu(struct Menu *menu)
}
}
/* try to grab pointer, we may have to wait for another process to ungrab */
static void
grabpointer(void)
{
struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000 };
int i;
for (i = 0; i < 1000; i++) {
if (XGrabPointer(dpy, rootwin, True, ButtonPressMask,
GrabModeAsync, GrabModeAsync, None,
None, CurrentTime) == GrabSuccess)
return;
nanosleep(&ts, NULL);
}
errx(1, "cannot grab keyboard");
}
/* try to grab keyboard, we may have to wait for another process to ungrab */
static void
grabkeyboard(void)
{
struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000 };
int i;
for (i = 0; i < 1000; i++) {
if (XGrabKeyboard(dpy, rootwin, True, GrabModeAsync,
GrabModeAsync, CurrentTime) == GrabSuccess)
return;
nanosleep(&ts, NULL);
}
errx(1, "cannot grab keyboard");
}
/* get menu and item of given window and position */
static void
getmenuitem(Window win, int y,