private void Init()
{
_stopwatch = new Stopwatch();
_totalElapsedMillis = 0L;
lock (_particleLock)
{
_particles ??= new List <ParticleBase>();
}
_fallingParticlesPerSecond = FallingParticlesPerSecond;
_particleRequester = new RateBasedParticleRequester();
TouchParticleGenerator = new SimpleParticleGenerator();
FallingParticleGenerator = new FallingParticleGenerator();
// Debug info
_showDebugInfo = ShowDebugInfo;
_debugInfoPaint.Color = DebugInfoColor.ToSKColor();
// SKCanvasView is not fast enough on Android, so let's use an SKGLView 😄
// Since there isn't a common interface for both SKCanvasView and SKGLView we're using a bit of indirection
if (UseSKGLView)
{
var skglView = new SKGLView();
_getCanvasSize = () => skglView.CanvasSize;
_invalidateSurface = () => skglView.InvalidateSurface();
_getEnableTouchEvents = () => skglView.EnableTouchEvents;
_setEnableTouchEvents = enableTouchEvents => skglView.EnableTouchEvents = enableTouchEvents;
_addTouchHandler = touchHandler => skglView.Touch += touchHandler;
_removeTouchHandler = touchHandler => skglView.Touch -= touchHandler;
skglView.PaintSurface += SkglViewOnPaintSurface;
Content = skglView;
}
else
{
var skCanvasView = new SKCanvasView();
_getCanvasSize = () => skCanvasView.CanvasSize;
_invalidateSurface = () => skCanvasView.InvalidateSurface();
_getEnableTouchEvents = () => skCanvasView.EnableTouchEvents;
_setEnableTouchEvents = enableTouchEvents => skCanvasView.EnableTouchEvents = enableTouchEvents;
_addTouchHandler = touchHandler => skCanvasView.Touch += touchHandler;
_removeTouchHandler = touchHandler => skCanvasView.Touch -= touchHandler;
skCanvasView.PaintSurface += OnPaintSurface;
Content = skCanvasView;
}
}
protected override void OnPropertyChanged(string propertyName = null)
{
base.OnPropertyChanged(propertyName);
if (propertyName == IsActiveProperty.PropertyName)
{
if (IsActive)
{
EnableTouchInput();
if (IsRunning)
{
StartMainAnimation();
}
}
else
{
DisableTouchInput();
StopMainAnimation();
IsRunning = false;
}
}
else if (propertyName == AddParticlesOnTapProperty.PropertyName ||
propertyName == AddParticlesOnDragProperty.PropertyName)
{
if (AddParticlesOnTap || AddParticlesOnDrag)
{
EnableTouchInput();
}
else
{
DisableTouchInput();
}
}
else if (propertyName == IsRunningProperty.PropertyName && IsActive)
{
if (IsRunning)
{
StartMainAnimation();
}
else
{
PauseMainAnimation();
}
}
else if (propertyName == UseSKGLViewProperty.PropertyName)
{
Init();
}
else if (propertyName == ShowDebugInfoProperty.PropertyName)
{
_showDebugInfo = ShowDebugInfo;
}
else if (propertyName == DebugInfoColorProperty.PropertyName)
{
_debugInfoPaint.Color = DebugInfoColor.ToSKColor();
}
else if (propertyName == FallingParticlesPerSecondProperty.PropertyName)
{
_fallingParticlesPerSecond = FallingParticlesPerSecond;
}
}