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public partial class MainPage : UserControl
{
double centerX;
double centerY;
Duration duration;
rectangle current;
Point offset;
Point center;
string upSuffixe = "{0}_UP";
string backSuffixe = "{0}_BACK";
public MainPage()
{
InitializeComponent();
this.Loaded += new RoutedEventHandler(MainPage_Loaded);
}
void MainPage_Loaded(object sender, RoutedEventArgs e)
{
centerX = (double)(LayoutRoot.Width / 2);
centerY = (double)(LayoutRoot.Height / 2);
center = new Point(centerX, centerY);
duration = new Duration(TimeSpan.FromSeconds(1));
foreach (rectangle r in LayoutRoot.Children)
{
r.MouseLeftButtonUp += new MouseButtonEventHandler(r_MouseLeftButtonUp);
InitAnimation(r, true);
InitAnimation(r, false);
}
}
void r_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
Storyboard playing;
rectangle r = (sender as rectangle);
// the user has clicked on the highlighted rectangle. we put it back to original place
if (r != null && r.Equals(current) && r.IsUp)
{
playing = (this.Resources[GetSBKey(r.Name, false)] as Storyboard);
if (playing != null)
{
playing.Begin();
r.IsUp = false;
return;
}
}
// otherwise the user has clicked on a NOT highlighted rectangle
else
{
// first check if a rectangle is highlighted -> then reduce it
if (current != null && r != null && current != r)
{
playing = (this.Resources[GetSBKey(current.Name, false)] as Storyboard);
if (playing != null)
{
playing.Begin();
current.IsUp = false;
}
}
if (r != null)
{
if (r.IsUp == false)
{
playing = (this.Resources[GetSBKey(r.Name, true)] as Storyboard);
if (playing != null)
{
r.IsUp = true;
current = r;
playing.Begin();
}
}
}
}
}
//App.Current.RootVisual.Clip.Bounds.Y;
private void InitAnimation(rectangle r, bool up)
{
Storyboard sb = new Storyboard();
this.Resources.Add(GetSBKey(r.Name, up), sb);
GeneralTransform gt = r.TransformToVisual(LayoutRoot);
Point currentPosition = gt.Transform(new Point(0, 0));
offset = new Point(center.X - currentPosition.X, centerY - currentPosition.Y);
DoubleAnimation X = new DoubleAnimation();
sb.Children.Add(X);
X.To = up ? offset.X : offset.X * -1;
X.Duration = duration;
X.EasingFunction = new ElasticEase();
DoubleAnimation Y = new DoubleAnimation();
sb.Children.Add(Y);
Y.To = up ? offset.Y : offset.Y *-1;
Y.Duration = duration;
Y.EasingFunction = new ElasticEase();
Storyboard.SetTarget(X, r);
Storyboard.SetTargetProperty(X, new PropertyPath("(UIElement.RenderTransform).(TransformGroup.Children)[0].(TranslateTransform.X)"));
Storyboard.SetTarget(Y, r);
Storyboard.SetTargetProperty(Y, new PropertyPath("(UIElement.RenderTransform).(TransformGroup.Children)[0].(TranslateTransform.Y)"));
}
private TransformGroup GetTransFormGroup(int x, int y, double angle, double scale)
{
TransformGroup tg = new TransformGroup();
TranslateTransform tt = new TranslateTransform();
tt.X = x;
tt.Y = y;
tg.Children.Add(tt);
ScaleTransform st = new ScaleTransform();
st.ScaleX = scale;
st.ScaleY = scale;
tg.Children.Add(st);
return tg;
}
private string GetSBKey(string rectangleName, bool up)
{
if (up)
{
return String.Format(upSuffixe, rectangleName);
}
else
{
return String.Format(backSuffixe, rectangleName);
}
}
} |
