Don't resize guest display on zoom change

When the zoom level is changed, the virt-viewer window gets resized. But we
don't want this to trigger a resize of the guest display. But occasionally
rounding errors cause the guest display to be reconfigured when zooming out.  To
fix this, we first check whether the current size is the preferred size.  If it
is, we don't send down a resize command to the guest.

In addition to preventing guest resizes in response to zooming, it also improves
the behavior when the guest display resolution is changed from within the guest.
Before this change, we'd have the following behavior:
    A. guest changes display to WxH
    B. client gets notified of change and resizes the window to WxH
    C. client responds to window resize by sending a new monitor config command to the guest

With this change, the extra step C will be avoided because we're already at the
preferred size.

Resolves: rhbz#1004051

0 files changed, 0 insertions, 0 deletions