/// <summary>
/// Initialize the Spectrum virtual machine dependencies when the user control is loaded
/// </summary>
private void OnLoaded(object sender, RoutedEventArgs routedEventArgs)
{
Vm = DataContext as MachineViewModel;
if (Vm == null)
{
return;
}
Vm.VmStateChanged += OnVmStateChanged;
Vm.DisplayModeChanged += OnDisplayModeChanged;
// --- Prepare the screen
_displayPars = new ScreenConfiguration(Vm.ScreenConfiguration);
_bitmap = new WriteableBitmap(
_displayPars.ScreenWidth,
_displayPars.ScreenLines,
96,
96,
PixelFormats.Bgr32,
null);
Display.Source = _bitmap;
Display.Width = _displayPars.ScreenWidth;
Display.Height = _displayPars.ScreenLines;
Display.Stretch = Stretch.Fill;
// --- When the control is reloaded, resume playing the sound
if (_isReloaded && Vm.VmState == VmState.Running)
{
Vm.SpectrumVm.BeeperProvider.PlaySound();
}
// --- Register messages this control listens to
Vm.VmScreenRefreshed += VmOnVmScreenRefreshed;
// --- Now, the control is fully loaded and ready to work
Vm.FastTapeMode = false;
Vm.StartVmCommand.Execute(null);
// --- Apply the current screen size
// ReSharper disable once PossibleNullReferenceException
OnDisplayModeChanged(this, EventArgs.Empty);
}
/// <summary>
/// Hides the constructor from external actors
/// </summary>
public DesignTimeAppViewModel()
{
MachineViewModel = new MachineViewModel();
}
