/**
* Updates current->cols with the current window size (width)
*/
static int getWindowSize(struct current *current)
{
struct winsize ws;
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == 0 && ws.ws_col != 0) {
current->cols = ws.ws_col;
return 0;
}
/* Failed to query the window size. Perhaps we are on a serial terminal.
* Try to query the width by sending the cursor as far to the right
* and reading back the cursor position.
* Note that this is only done once per call to linenoise rather than
* every time the line is refreshed for efficiency reasons.
*
* In more detail, we:
* (a) request current cursor position,
* (b) move cursor far right,
* (c) request cursor position again,
* (d) at last move back to the old position.
* This gives us the width without messing with the externally
* visible cursor position.
*/
if (current->cols == 0) {
int here;
current->cols = 80;
/* (a) */
if (queryCursor (current->fd, &here)) {
/* (b) */
fd_printf(current->fd, "\x1b[999C");
/* (c). Note: If (a) succeeded, then (c) should as well.
* For paranoia we still check and have a fallback action
* for (d) in case of failure..
*/
if (!queryCursor (current->fd, ¤t->cols)) {
/* (d') Unable to get accurate position data, reset
* the cursor to the far left. While this may not
* restore the exact original position it should not
* be too bad.
*/
fd_printf(current->fd, "\r");
} else {
/* (d) Reset the cursor back to the original location. */
if (current->cols > here) {
fd_printf(current->fd, "\x1b[%dD", current->cols - here);
}
}
} /* 1st query failed, doing nothing => default 80 */
}
return 0;
}
void Component::mouseMoved(MouseEventDetails* const e)
{
if(getParentWindow() != NULL && getParentWindow()->getParentDrawingSurface()!=NULL&&getParentWindow()->getParentDrawingSurface()->getEventProducer() != NULL)
{
getParentWindow()->getParentDrawingSurface()->getEventProducer()->setCursorType(queryCursor(e->getLocation()));
}
produceMouseMoved(e);
}