/// <summary>
/// Change to the next layout
/// <param name="scheduleItem"></param>
/// </summary>
private void ChangeToNextLayout(ScheduleItem scheduleItem)
{
Debug.WriteLine("ChangeToNextLayout: called", "MainWindow");
if (ApplicationSettings.Default.PreventSleep)
{
try
{
SetThreadExecutionState(EXECUTION_STATE.ES_DISPLAY_REQUIRED | EXECUTION_STATE.ES_SYSTEM_REQUIRED | EXECUTION_STATE.ES_CONTINUOUS);
}
catch
{
Trace.WriteLine(new LogMessage("MainForm - ChangeToNextLayout", "Unable to set Thread Execution state"), LogType.Info.ToString());
}
}
try
{
// Destroy the Current Layout
try
{
if (this.currentLayout != null)
{
Debug.WriteLine("ChangeToNextLayout: stopping the current Layout", "MainWindow");
this.currentLayout.Stop();
DestroyLayout(this.currentLayout);
Debug.WriteLine("ChangeToNextLayout: stopped and removed the current Layout", "MainWindow");
}
}
catch (Exception e)
{
// Force collect all controls
this.Scene.Children.Clear();
Trace.WriteLine(new LogMessage("MainForm", "ChangeToNextLayout: Destroy Layout Failed. Exception raised was: " + e.Message), LogType.Info.ToString());
throw e;
}
// Prepare the next layout
try
{
this.currentLayout = PrepareLayout(scheduleItem);
// We have loaded a layout background and therefore are no longer showing the splash screen
// Remove the Splash Screen Image
RemoveSplashScreen();
// Start the Layout.
StartLayout(this.currentLayout);
}
catch (ShowSplashScreenException)
{
// Pass straight out to show the splash screen
throw;
}
catch (Exception e)
{
Trace.WriteLine(new LogMessage("MainForm", "ChangeToNextLayout: Prepare/Start Layout Failed. Exception raised was: " + e.Message), LogType.Info.ToString());
// Remove the Layout again
if (this.currentLayout != null)
{
DestroyLayout(this.currentLayout);
}
// Pass out
throw;
}
}
catch (ShowSplashScreenException)
{
// Specifically asked to show the splash screen.
if (!_showingSplash)
{
ShowSplashScreen(10);
}
}
catch (Exception ex)
{
Trace.WriteLine(new LogMessage("MainForm", "ChangeToNextLayout: Layout Change to " + scheduleItem.layoutFile + " failed. Exception raised was: " + ex.Message), LogType.Error.ToString());
// We could not prepare or start this Layout, so we ought to remove it from the Schedule.
_schedule.RemoveLayout(scheduleItem);
// Do we have more than one Layout in our Schedule which we can try?
if (_schedule.ActiveLayouts > 1)
{
_schedule.NextLayout();
}
else if (scheduleItem != _schedule.GetDefaultLayout() && !_schedule.GetDefaultLayout().IsSplash())
{
// Can we show the default layout?
try
{
currentLayout = PrepareLayout(_schedule.GetDefaultLayout());
// We have loaded a layout background and therefore are no longer showing the splash screen
// Remove the Splash Screen Image
RemoveSplashScreen();
// Start the Layout.
StartLayout(this.currentLayout);
}
catch
{
Trace.WriteLine(new LogMessage("MainForm", "ChangeToNextLayout: Failed to show the default layout. Exception raised was: " + ex.Message), LogType.Error.ToString());
ShowSplashScreen(10);
}
}
else
{
ShowSplashScreen(10);
}
}
}
