private void removeOutdateDanmaku(string _UniqueName)
{
OutlinedTextBlock _targetDanmaku = BindingCanvas.FindName(_UniqueName) as OutlinedTextBlock;
if (_targetDanmaku != null)
{
BindingCanvas.Children.Remove(_targetDanmaku);
BindingCanvas.UnregisterName(_UniqueName);
_targetDanmaku = null;
}
}
private void AddR2LAnimation(string _UniqueName, Duration AppearDuration)
{
OutlinedTextBlock _targetDanmaku = BindingCanvas.FindName(_UniqueName) as OutlinedTextBlock;
double _danmakuWidth = _targetDanmaku.ActualWidth;
DoubleAnimation _doubleAnimation = new DoubleAnimation(BindingCanvas.ActualWidth, -_danmakuWidth, AppearDuration, FillBehavior.Stop);
//Storyboard _sb = new Storyboard();
//Storyboard.SetTarget(_doubleAnimation, _targetDanmaku);
//Storyboard.SetTargetProperty(_doubleAnimation, mCache_R2LPropertyPath);
_doubleAnimation.Completed += delegate(object o, EventArgs e) { removeOutdateDanmaku(_targetDanmaku.Name); };
_targetDanmaku.BeginAnimation(Canvas.LeftProperty, _doubleAnimation);
//_sb.Completed += delegate (object o, EventArgs e) { removeOutdateDanmaku(_targetDanmaku.Name); };
//_sb.Children.Add(_doubleAnimation);
//_sb.Begin();
}
/// <summary>
/// Draw a right to left danmaku on binding canvas
/// </summary>
/// <param name="Content">Danmaku content</param>
/// <param name="Style">Override default danmaku style if needed</param>
/// <returns></returns>
public string DrawDanmaku_R2L(string Content, BaseDanmaku Style = null)
{
SolidColorBrush _FillBrush;
Duration _duration;
DropShadowEffect _ShadowEffect;
if (Style == null || Style == mDefaultStyle)
{
Style = mDefaultStyle;
_FillBrush = mCache_SolidColorBrush;
_ShadowEffect = mCache_ShadowEffect;
_duration = mCache_Duration;
}
else
{
if (Style.Duration != mDefaultStyle.Duration)
{
_duration = new Duration(TimeSpan.FromMilliseconds(Style.Duration));
}
else
{
_duration = mCache_Duration;
}
if (Style.ColorR != mDefaultStyle.ColorR || Style.ColorG != mDefaultStyle.ColorG || Style.ColorB != mDefaultStyle.ColorB)
{
_FillBrush = new SolidColorBrush(Color.FromRgb(Style.ColorR, Style.ColorG, Style.ColorB));
_ShadowEffect = mCache_ShadowEffect;
if ((Style.ColorR + Style.ColorG + Style.ColorB + 1) / 3 >= 255 / 2)
{
_ShadowEffect.Color = Color.FromRgb(0, 0, 0);
}
else
{
_ShadowEffect.Color = Color.FromRgb(255, 255, 255);
}
}
else
{
_ShadowEffect = mCache_ShadowEffect;
_FillBrush = mCache_SolidColorBrush;
}
}
OutlinedTextBlock _thisDanmaku = new OutlinedTextBlock();
_thisDanmaku.Name = "uni_" + Utils.GetRandomString(5);
// Style
_thisDanmaku.Text = Content;
_thisDanmaku.FontFamily = Style.FontFamily;
_thisDanmaku.FontSize = Style.FontSize;
_thisDanmaku.Fill = _FillBrush;
_thisDanmaku.SetValue(Canvas.TopProperty, Style.PositionX);
_thisDanmaku.SetValue(Canvas.LeftProperty, Style.PositionY);
_thisDanmaku.FontWeight = FontWeights.Bold;
if (Style.Shadow)
{
_thisDanmaku.Effect = _ShadowEffect;
}
// Animation
_thisDanmaku.Loaded += delegate(object o, RoutedEventArgs e) { AddR2LAnimation(_thisDanmaku.Name, _duration); };
// Add to canvas
BindingCanvas.Children.Add(_thisDanmaku);
BindingCanvas.RegisterName(_thisDanmaku.Name, _thisDanmaku);
return(_thisDanmaku.Name);
}
