Window Select_Window(Display *disp, int descend)
{
int status;
Cursor cursor;
XEvent event;
Window target_win = None, root = RootWindow(disp,screen);
int buttons = 0;
/* Make the target cursor */
cursor = XCreateFontCursor(disp, XC_crosshair);
/* Grab the pointer using target cursor, letting it room all over */
status = XGrabPointer(disp, root, False,
ButtonPressMask|ButtonReleaseMask, GrabModeSync,
GrabModeAsync, root, cursor, CurrentTime);
if (status != GrabSuccess) Fatal_Error("Can't grab the mouse.");
/* Let the user select a window... */
while ((target_win == None) || (buttons != 0)) {
/* allow one more event */
XAllowEvents(disp, SyncPointer, CurrentTime);
XWindowEvent(disp, root, ButtonPressMask|ButtonReleaseMask, &event);
switch (event.type) {
case ButtonPress:
if (target_win == None) {
target_win = event.xbutton.subwindow; /* window selected */
if (target_win == None) target_win = root;
}
buttons++;
break;
case ButtonRelease:
if (buttons > 0) /* there may have been some down before we started */
buttons--;
break;
}
}
XUngrabPointer(disp, CurrentTime); /* Done with pointer */
if (!descend || (target_win == root))
return(target_win);
target_win = Find_Client(disp, root, target_win);
return(target_win);
}
xcb_window_t Select_Window(xcb_connection_t *dpy,
const xcb_screen_t *screen,
int descend)
{
xcb_cursor_t cursor;
xcb_generic_event_t *event;
xcb_window_t target_win = XCB_WINDOW_NONE;
xcb_window_t root = screen->root;
int buttons = 0;
xcb_generic_error_t *err;
xcb_grab_pointer_cookie_t grab_cookie;
xcb_grab_pointer_reply_t *grab_reply;
/* Make the target cursor */
cursor = Create_Font_Cursor (dpy, XC_crosshair);
/* Grab the pointer using target cursor, letting it room all over */
grab_cookie = xcb_grab_pointer
(dpy, False, root,
XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE,
XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC,
root, cursor, XCB_TIME_CURRENT_TIME);
grab_reply = xcb_grab_pointer_reply (dpy, grab_cookie, &err);
if (grab_reply->status != XCB_GRAB_STATUS_SUCCESS)
Fatal_Error ("Can't grab the mouse.");
/* Let the user select a window... */
while ((target_win == XCB_WINDOW_NONE) || (buttons != 0)) {
/* allow one more event */
xcb_allow_events (dpy, XCB_ALLOW_SYNC_POINTER, XCB_TIME_CURRENT_TIME);
xcb_flush (dpy);
event = xcb_wait_for_event (dpy);
switch (event->response_type & 0x7f) {
case XCB_BUTTON_PRESS:
{
xcb_button_press_event_t *bp = (xcb_button_press_event_t *)event;
if (target_win == XCB_WINDOW_NONE) {
target_win = bp->child; /* window selected */
if (target_win == XCB_WINDOW_NONE)
target_win = root;
}
buttons++;
break;
}
case XCB_BUTTON_RELEASE:
if (buttons > 0) /* there may have been some down before we started */
buttons--;
break;
default:
/* just discard all other events */
break;
}
free (event);
}
xcb_ungrab_pointer (dpy, XCB_TIME_CURRENT_TIME); /* Done with pointer */
if (!descend || (target_win == root))
return (target_win);
target_win = Find_Client (dpy, root, target_win);
return (target_win);
}
