public CaretAdorner(TextBox adornedElement)
: base(adornedElement)
{
var fontRect = adornedElement.GetRectFromCharacterIndex(0);
this.caret = new Rectangle {
Width = 1,
Height = fontRect.Height,
Fill = Brushes.Black,
RenderTransform = new TranslateTransform(fontRect.Left, fontRect.Top),
Opacity = 0,
SnapsToDevicePixels = true
};
adornedElement.SizeChanged += OnSizeChanged;
adornedElement.SelectionChanged += OnSelectionChanged;
adornedElement.PreviewMouseDown += OnPreviewMouseDown;
adornedElement.GotKeyboardFocus += OnGotFocus;
adornedElement.LostKeyboardFocus += OnLostFocus;
this.children = new VisualCollection(this);
this.children.Add(this.caret);
double transitionTime = SystemInformation.CaretBlinkTime;
TimeSpan fadeTime = TimeSpan.FromMilliseconds(transitionTime * (1d / 3d));
TimeSpan holdTime = TimeSpan.FromMilliseconds(transitionTime * (2d / 3d));
var storyboard = new Storyboard {
RepeatBehavior = RepeatBehavior.Forever
};
var fade = new DoubleAnimationUsingKeyFrames {
KeyFrames =
{
new EasingDoubleKeyFrame(0, KeyTime.FromTimeSpan(fadeTime)),
new DiscreteDoubleKeyFrame(0, KeyTime.FromTimeSpan(fadeTime + holdTime)),
new EasingDoubleKeyFrame(1, KeyTime.FromTimeSpan(fadeTime + holdTime + fadeTime)),
new DiscreteDoubleKeyFrame(1, KeyTime.FromTimeSpan(fadeTime + holdTime + fadeTime + holdTime))
},
Duration = new Duration(TimeSpan.FromMilliseconds(transitionTime * 2))
};
Storyboard.SetTargetProperty(fade, new PropertyPath("Opacity"));
fade.Freeze();
storyboard.Children.Add(fade);
this.blinkStoryboard = storyboard;
}
private void AssociatedObjectOnSelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems == null || e.AddedItems.Count < 1 || !AssociatedObject.LayoutPaths.Any())
{
return;
}
LayoutPath target = AssociatedObject.LayoutPaths.First();
int selectedIndex = AssociatedObject.SelectedIndex;
int itemCount = AssociatedObject.Items.Count;
// アニメーションする移動量を計算する。
double from;
double to = DefaultStart - MaximumLength / itemCount * selectedIndex;
target.Start = to;
if (_previousSelectedIndex == 0 && selectedIndex == itemCount - 1)
{
from = DefaultStart - MaximumLength;
}
else if (_previousSelectedIndex == itemCount - 1 && selectedIndex == 0)
{
from = DefaultStart + MaximumLength / itemCount;
}
else
{
from = target.Start;
}
// Storyboardを作成する。
var frames = new DoubleAnimationUsingKeyFrames();
frames.KeyFrames.Add(new EasingDoubleKeyFrame(from, KeyTime.FromTimeSpan(TimeSpan.Zero)));
frames.KeyFrames.Add(new EasingDoubleKeyFrame(to, KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(200))));
Storyboard.SetTarget(frames, target);
Storyboard.SetTargetProperty(frames, new PropertyPath(LayoutPath.StartProperty));
frames.Freeze();
var storyboard = new Storyboard();
storyboard.Children.Add(frames);
storyboard.Freeze();
AssociatedObject.BeginStoryboard(storyboard);
_previousSelectedIndex = selectedIndex;
}
private void SetAnimation()
{
storyBoard?.Stop(Selected);
if ((EdgesPath?.Count ?? 0) == 0)
{
return;
}
storyBoard = new Storyboard();
DoubleAnimationUsingKeyFrames leftAnimation = new DoubleAnimationUsingKeyFrames();
DoubleAnimationUsingKeyFrames topAnimation = new DoubleAnimationUsingKeyFrames();
leftAnimation.RepeatBehavior = RepeatBehavior.Forever;
topAnimation.RepeatBehavior = RepeatBehavior.Forever;
Storyboard.SetTargetName(leftAnimation, Selected.Name);
Storyboard.SetTargetProperty(leftAnimation, new PropertyPath("(0)", Canvas.LeftProperty));
Storyboard.SetTargetName(topAnimation, Selected.Name);
Storyboard.SetTargetProperty(topAnimation, new PropertyPath("(0)", Canvas.TopProperty));
double sumDist = EdgesPath.Sum(edge => Distance(edge));
double sumTime = 0;
foreach (var edge in EdgesPath)
{
leftAnimation.KeyFrames.Add(new EasingDoubleKeyFrame(Nodes[edge.Begin].X, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 0, (int)sumTime))));
topAnimation.KeyFrames.Add(new EasingDoubleKeyFrame(Nodes[edge.Begin].Y, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 0, (int)sumTime))));
sumTime += (Distance(edge) / sumDist) * (animTimeSpan * EdgesPath.Count);
leftAnimation.KeyFrames.Add(new EasingDoubleKeyFrame(Nodes[edge.End].X, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 0, (int)sumTime))));
topAnimation.KeyFrames.Add(new EasingDoubleKeyFrame(Nodes[edge.End].Y, KeyTime.FromTimeSpan(new TimeSpan(0, 0, 0, 0, (int)sumTime))));
}
leftAnimation.Freeze();
topAnimation.Freeze();
storyBoard.Children.Add(leftAnimation);
storyBoard.Children.Add(topAnimation);
storyBoard.Begin(Selected, true);
}
