/// <summary>
/// Handles data point state property change.
/// </summary>
/// <param name="dataPoint">The data point.</param>
/// <param name="oldValue">The old value.</param>
/// <param name="newValue">The new value.</param>
protected virtual void OnDataPointStateChanged(DataPoint dataPoint, DataPointState oldValue, DataPointState newValue)
{
if (dataPoint.State == DataPointState.Hidden)
{
DetachEventHandlersFromDataPoint(dataPoint);
PlotArea.Children.Remove(dataPoint);
}
}
/// <summary>
/// Called when the value of the State property changes.
/// </summary>
/// <param name="d">Control that changed its State.</param>
/// <param name="e">Event arguments.</param>
private static void OnStatePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
DataPoint source = (DataPoint)d;
DataPointState oldValue = (DataPointState)e.OldValue;
DataPointState newValue = (DataPointState)e.NewValue;
source.OnStatePropertyChanged(oldValue, newValue);
}
/// <summary>
/// Called when the value of the State property changes.
/// </summary>
/// <param name="oldValue">The value to be replaced.</param>
/// <param name="newValue">The new value.</param>
protected virtual void OnStatePropertyChanged(DataPointState oldValue, DataPointState newValue)
{
if (!IsCoercingState)
{
if (newValue < oldValue)
{
// If we've somehow gone backwards in the life cycle (other
// than when we go back to normal from updating) coerce to
// old value.
IsCoercingState = true;
this.State = oldValue;
IsCoercingState = false;
}
else
{
// Update selection
if (newValue > DataPointState.Normal)
{
this.IsSelectionEnabled = false;
}
// Start state transition
bool transitionStarted = false;
switch (newValue)
{
case DataPointState.Showing:
case DataPointState.Hiding:
transitionStarted = GoToCurrentRevealState();
break;
}
// Fire Changed event
RoutedPropertyChangedEventHandler <DataPointState> handler = this.StateChanged;
if (handler != null)
{
handler(this, new RoutedPropertyChangedEventArgs <DataPointState>(oldValue, newValue));
}
// Change state if no transition started
if (!transitionStarted && _templateApplied)
{
switch (newValue)
{
case DataPointState.Showing:
State = DataPointState.Normal;
break;
case DataPointState.Hiding:
State = DataPointState.Hidden;
break;
}
}
}
}
}
/// <summary>
/// Called when the value of the State property changes.
/// </summary>
/// <param name="oldValue">The value to be replaced.</param>
/// <param name="newValue">The new value.</param>
protected virtual void OnStatePropertyChanged(DataPointState oldValue, DataPointState newValue)
{
// If state ever goes to or past PendingRemoval, the DataPoint is no longer active
if (newValue >= DataPointState.PendingRemoval)
{
IsActive = false;
}
// Update selection
if (DataPointState.Normal < newValue)
{
IsSelectionEnabled = false;
}
// Start state transition
bool transitionStarted = false;
switch (newValue)
{
case DataPointState.Showing:
case DataPointState.Hiding:
transitionStarted = GoToCurrentRevealState();
break;
}
// Fire Changed event
RoutedPropertyChangedEventHandler <DataPointState> handler = StateChanged;
if (handler != null)
{
handler(this, new RoutedPropertyChangedEventArgs <DataPointState>(oldValue, newValue));
}
// Change state if no transition started
if (!transitionStarted)
{
switch (newValue)
{
case DataPointState.Showing:
if (_appliedTemplate)
{
State = DataPointState.Normal;
}
break;
case DataPointState.Hiding:
State = DataPointState.Hidden;
break;
}
}
}
/// <summary>
/// Reveals data points using a storyboard.
/// </summary>
/// <param name="dataPoints">The data points to change the state of.
/// </param>
/// <param name="newState">The state to change to.</param>
private void StaggeredStateChange(IList <DataPoint> dataPoints, DataPointState newState)
{
if (PlotArea == null || dataPoints.Count == 0)
{
return;
}
string guid = Guid.NewGuid().ToString();
Storyboard stateChangeStoryBoard = new Storyboard();
stateChangeStoryBoard.Completed +=
(sender, args) =>
{
PlotArea.Resources.Remove(guid);
};
dataPoints.ForEachWithIndex((dataPoint, count) =>
{
// Create an Animation
ObjectAnimationUsingKeyFrames objectAnimationUsingKeyFrames = new ObjectAnimationUsingKeyFrames();
Storyboard.SetTarget(objectAnimationUsingKeyFrames, dataPoint);
Storyboard.SetTargetProperty(objectAnimationUsingKeyFrames, new PropertyPath("State"));
// Create a key frame
DiscreteObjectKeyFrame discreteObjectKeyFrame = new DiscreteObjectKeyFrame();
discreteObjectKeyFrame.Value = newState;
// Create the specified animation type
switch (AnimationSequence)
{
case AnimationSequence.Simultaneous:
discreteObjectKeyFrame.KeyTime = TimeSpan.Zero;
break;
case AnimationSequence.FirstToLast:
discreteObjectKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * ((double)count / dataPoints.Count));
break;
case AnimationSequence.LastToFirst:
discreteObjectKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * ((double)(dataPoints.Count - count - 1) / dataPoints.Count));
break;
}
// Add the Animation to the Storyboard
objectAnimationUsingKeyFrames.KeyFrames.Add(discreteObjectKeyFrame);
stateChangeStoryBoard.Children.Add(objectAnimationUsingKeyFrames);
});
_storyBoardQueue.Enqueue(stateChangeStoryBoard);
}
/// <summary>
/// Handles data point state property change.
/// </summary>
/// <param name="dataPoint">The data point.</param>
/// <param name="oldValue">The old value.</param>
/// <param name="newValue">The new value.</param>
protected virtual void OnDataPointStateChanged(DataPoint dataPoint, DataPointState oldValue, DataPointState newValue)
{
if (dataPoint.State == DataPointState.Hidden)
{
DetachEventHandlersFromDataPoint(dataPoint);
PlotArea.Children.Remove(dataPoint);
}
}
/// <summary>
/// Reveals data points using a storyboard.
/// </summary>
/// <param name="dataPoints">The data points to change the state of.
/// </param>
/// <param name="dataPointCount">The number of data points in the sequence.</param>
/// <param name="newState">The state to change to.</param>
private void StaggeredStateChange(IEnumerable<DataPoint> dataPoints, int dataPointCount, DataPointState newState)
{
if (PlotArea == null || dataPointCount == 0)
{
return;
}
string guid = Guid.NewGuid().ToString();
Storyboard stateChangeStoryBoard = new Storyboard();
stateChangeStoryBoard.Completed +=
(sender, args) =>
{
PlotArea.Resources.Remove(guid);
};
dataPoints.ForEachWithIndex((dataPoint, count) =>
{
// Create an Animation
ObjectAnimationUsingKeyFrames objectAnimationUsingKeyFrames = new ObjectAnimationUsingKeyFrames();
Storyboard.SetTarget(objectAnimationUsingKeyFrames, dataPoint);
Storyboard.SetTargetProperty(objectAnimationUsingKeyFrames, new PropertyPath("State"));
// Create a key frame
DiscreteObjectKeyFrame discreteObjectKeyFrame = new DiscreteObjectKeyFrame();
discreteObjectKeyFrame.Value = newState;
// Create the specified animation type
switch (AnimationSequence)
{
case AnimationSequence.Simultaneous:
discreteObjectKeyFrame.KeyTime = TimeSpan.Zero;
break;
case AnimationSequence.FirstToLast:
discreteObjectKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * ((double)count / dataPointCount));
break;
case AnimationSequence.LastToFirst:
discreteObjectKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * ((double)(dataPointCount - count - 1) / dataPointCount));
break;
}
// Add the Animation to the Storyboard
objectAnimationUsingKeyFrames.KeyFrames.Add(discreteObjectKeyFrame);
stateChangeStoryBoard.Children.Add(objectAnimationUsingKeyFrames);
});
_storyBoardQueue.Enqueue(stateChangeStoryBoard);
}
/// <summary>
/// Called when the value of the State property changes.
/// </summary>
/// <param name="oldValue">The value to be replaced.</param>
/// <param name="newValue">The new value.</param>
protected virtual void OnStatePropertyChanged(DataPointState oldValue, DataPointState newValue)
{
if (!IsCoercingState)
{
if (newValue < oldValue)
{
// If we've somehow gone backwards in the life cycle (other
// than when we go back to normal from updating) coerce to
// old value.
IsCoercingState = true;
this.State = oldValue;
IsCoercingState = false;
}
else
{
// Update selection
if (newValue > DataPointState.Normal)
{
this.IsSelectionEnabled = false;
}
// Start state transition
bool transitionStarted = false;
switch (newValue)
{
case DataPointState.Showing:
case DataPointState.Hiding:
transitionStarted = GoToCurrentRevealState();
break;
}
// Fire Changed event
RoutedPropertyChangedEventHandler<DataPointState> handler = this.StateChanged;
if (handler != null)
{
handler(this, new RoutedPropertyChangedEventArgs<DataPointState>(oldValue, newValue));
}
// Change state if no transition started
if (!transitionStarted && _templateApplied)
{
switch (newValue)
{
case DataPointState.Showing:
State = DataPointState.Normal;
break;
case DataPointState.Hiding:
State = DataPointState.Hidden;
break;
}
}
}
}
}
/// <summary>
/// Reveals data points using a storyboard.
/// </summary>
/// <param name="dataPoints">The data points to change the state of.
/// </param>
/// <param name="dataPointCount">The number of data points in the sequence.</param>
/// <param name="newState">The state to change to.</param>
private void StaggeredStateChange(IEnumerable<DataPoint> dataPoints, int dataPointCount, DataPointState newState)
{
if (PlotArea == null || dataPointCount == 0)
{
return;
}
Storyboard stateChangeStoryBoard = new Storyboard();
dataPoints.ForEachWithIndex((dataPoint, count) =>
{
// Create an Animation
ObjectAnimationUsingKeyFrames objectAnimationUsingKeyFrames = new ObjectAnimationUsingKeyFrames();
objectAnimationUsingKeyFrames.EnableDependentAnimation = true;
Storyboard.SetTarget(objectAnimationUsingKeyFrames, dataPoint);
Storyboard.SetTargetProperty(objectAnimationUsingKeyFrames, "State");
// Create a key frame
DiscreteObjectKeyFrame discreteObjectKeyFrame = new DiscreteObjectKeyFrame();
discreteObjectKeyFrame.Value = (object)((int)newState);
// Create the specified animation type
switch (AnimationSequence)
{
case AnimationSequence.Simultaneous:
discreteObjectKeyFrame.KeyTime = TimeSpan.Zero;
break;
case AnimationSequence.FirstToLast:
discreteObjectKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * ((double)count / dataPointCount));
break;
case AnimationSequence.LastToFirst:
discreteObjectKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * ((double)(dataPointCount - count - 1) / dataPointCount));
break;
}
// Add the Animation to the Storyboard
objectAnimationUsingKeyFrames.KeyFrames.Add(discreteObjectKeyFrame);
stateChangeStoryBoard.Children.Add(objectAnimationUsingKeyFrames);
});
//stateChangeStoryBoard.Duration = new Duration(AnimationSequence.Simultaneous == AnimationSequence ?
// TimeSpan.FromTicks(1) :
// TimeSpan.FromMilliseconds(1001));
_storyBoardQueue.Enqueue(
stateChangeStoryBoard,
(sender, args) =>
{
stateChangeStoryBoard.Stop();
});
}
/// <summary>
/// Handles the StateChanged event of a DataPoint.
/// </summary>
/// <param name="sender">Event source.</param>
/// <param name="e">Event arguments.</param>
private void DataPointStateChanged(object sender, DataPointState oldValue,DataPointState newValue)
{
DataPoint dataPoint = (DataPoint)sender;
if (DataPointState.Hidden == dataPoint.State)
{
DataItems.Remove(DataItems.Where(di => di.DataPoint == dataPoint).Single());
RemovedDataItems();
}
}
/// <summary>
/// Handles data point state property change.
/// </summary>
/// <param name="dataPoint">The data point.</param>
/// <param name="oldValue">The old value.</param>
/// <param name="newValue">The new value.</param>
protected virtual void OnDataPointStateChanged(DataPoint dataPoint, DataPointState oldValue, DataPointState newValue)
{
}
/// <summary>
/// Reveals data points using a storyboard.
/// </summary>
/// <param name="dataPoints">The data points to change the state of.
/// </param>
/// <param name="dataPointCount">The number of data points in the sequence.</param>
/// <param name="newState">The state to change to.</param>
private void StaggeredStateChange(IEnumerable<DataPoint> dataPoints, int dataPointCount, DataPointState newState)
{
if (PlotArea == null || dataPointCount == 0)
{
return;
}
Storyboard stateChangeStoryBoard = new Storyboard();
dataPoints.ForEachWithIndex((dataPoint, count) =>
{
dataPoint.Opacity = 0;
// Create an Animation
DoubleAnimationUsingKeyFrames objectAnimationUsingKeyFrames = new DoubleAnimationUsingKeyFrames();
Storyboard.SetTarget(objectAnimationUsingKeyFrames, dataPoint);
//TO-DO : Understand what is this
Storyboard.SetTargetProperty(objectAnimationUsingKeyFrames, "Opacity");
EasingDoubleKeyFrame BeginKeyFrame = new EasingDoubleKeyFrame();
BeginKeyFrame.Value = 0;
BeginKeyFrame.EasingFunction = new ElasticEase();
EasingDoubleKeyFrame EndKeyFrame = new EasingDoubleKeyFrame();
EndKeyFrame.Value = 100;
EndKeyFrame.EasingFunction =new ElasticEase();
// Create the specified animation type
switch (AnimationSequence)
{
case AnimationSequence.Simultaneous:
BeginKeyFrame.KeyTime = TimeSpan.Zero;
EndKeyFrame.KeyTime = TimeSpan.FromSeconds(1);
break;
case AnimationSequence.FirstToLast:
BeginKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * ((double)count / dataPointCount));
EndKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * (((double)count+1)/ dataPointCount));
break;
case AnimationSequence.LastToFirst:
BeginKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * ((double)(dataPointCount - count - 1) / dataPointCount));
EndKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * ((double)(dataPointCount - count) / dataPointCount));
break;
}
objectAnimationUsingKeyFrames.KeyFrames.Add(BeginKeyFrame);
objectAnimationUsingKeyFrames.KeyFrames.Add(EndKeyFrame);
objectAnimationUsingKeyFrames.Duration = new TimeSpan(0, 0, 1);
stateChangeStoryBoard.Children.Add(objectAnimationUsingKeyFrames);
});
stateChangeStoryBoard.Duration = new TimeSpan(0, 1, 0);
_storyBoardQueue.Enqueue(
stateChangeStoryBoard,
(sender, args) =>
{
//stateChangeStoryBoard.Stop();
});
}
void OnDataPointStateChanged(object sender, DataPointState oldValue,DataPointState newValue)
{
DataPoint dataPoint = (DataPoint)sender;
if (dataPoint.State == DataPointState.Hidden)
{
DetachEventHandlersFromDataPoint(dataPoint);
PlotArea.Children.Remove(dataPoint);
}
}
/// <summary>
/// Reveals data points using a storyboard.
/// </summary>
/// <param name="dataPoints">The data points to change the state of.
/// </param>
/// <param name="dataPointCount">The number of data points in the sequence.</param>
/// <param name="newState">The state to change to.</param>
private void StaggeredStateChange(IEnumerable <DataPoint> dataPoints, int dataPointCount, DataPointState newState)
{
if (PlotArea == null || dataPointCount == 0)
{
return;
}
Storyboard stateChangeStoryBoard = new Storyboard();
dataPoints.ForEachWithIndex((dataPoint, count) =>
{
// Create an Animation
ObjectAnimationUsingKeyFrames objectAnimationUsingKeyFrames = new ObjectAnimationUsingKeyFrames();
Storyboard.SetTarget(objectAnimationUsingKeyFrames, dataPoint);
Storyboard.SetTargetProperty(objectAnimationUsingKeyFrames, new PropertyPath("State"));
// Create a key frame
DiscreteObjectKeyFrame discreteObjectKeyFrame = new DiscreteObjectKeyFrame();
discreteObjectKeyFrame.Value = newState;
// Create the specified animation type
switch (AnimationSequence)
{
case AnimationSequence.Simultaneous:
discreteObjectKeyFrame.KeyTime = TimeSpan.Zero;
break;
case AnimationSequence.FirstToLast:
discreteObjectKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * ((double)count / dataPointCount));
break;
case AnimationSequence.LastToFirst:
discreteObjectKeyFrame.KeyTime = TimeSpan.FromMilliseconds(1000 * ((double)(dataPointCount - count - 1) / dataPointCount));
break;
}
// Add the Animation to the Storyboard
objectAnimationUsingKeyFrames.KeyFrames.Add(discreteObjectKeyFrame);
stateChangeStoryBoard.Children.Add(objectAnimationUsingKeyFrames);
});
stateChangeStoryBoard.Duration = new Duration(AnimationSequence.Simultaneous == AnimationSequence ?
TimeSpan.FromTicks(1) :
TimeSpan.FromMilliseconds(1001));
_storyBoardQueue.Enqueue(
stateChangeStoryBoard,
(sender, args) =>
{
stateChangeStoryBoard.Stop();
});
}
