+const VideoMode &Display::get_desktop_mode() const
+{
+ if(!primary_monitor || !primary_monitor->desktop_mode)
+ throw logic_error("no desktop mode");
+ return *primary_monitor->desktop_mode;
+}
+
+void Display::restore_mode()
+{
+ for(list<Monitor>::const_iterator i=monitors.begin(); i!=monitors.end(); ++i)
+ if(i->desktop_mode)
+ set_mode(*i->desktop_mode, false);
+}
+
+const VideoMode *Display::find_mode(const VideoMode &mode, float rate_tolerance) const
+{
+ const VideoMode *closest = 0;
+ float rate_diff = mode.rate;
+ for(list<VideoMode>::const_iterator i=modes.begin(); i!=modes.end(); ++i)
+ {
+ if(mode.monitor && i->monitor!=mode.monitor)
+ continue;
+ if(mode.rate && (i->rate<mode.rate-rate_tolerance || i->rate>mode.rate+rate_tolerance))
+ continue;
+ if(i->width!=mode.width || i->height!=mode.height)
+ continue;
+
+ if(mode.rate)
+ {
+ float d = abs(i->rate-mode.rate);
+ if(d<rate_diff)
+ {
+ closest = &*i;
+ rate_diff = d;
+ }
+ }
+ else
+ return &*i;
+ }
+
+ return closest;
+}
+
+const VideoMode *Display::find_mode(unsigned width, unsigned height) const
+{
+ return find_mode(VideoMode(width, height));
+}
+