public void Visualize(double[] array)
{
Contract.Ensures(array != null && array.Length > 0, "array can be not null and empty.");
// Display the value as rectangle.
// ================================================================================
// _ _ |_| |_| _ _|_|_ _ |_| _ _ _ _ _ _ _|_|_|_|_|
// |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_| => _ _|_|_|_|_|_|_|_|_|_|_|_|
// |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_| |_|_|_|_|_|_|_|_|_|_|_|_|_|
// ================================================================================
_data = array;
_canvas.Children.Clear();
// get the max value of array.
for (int i = 0; i < array.Length; i++)
{
if (maxValue.CompareTo(array[i]) < 0)
{
maxValue = array[i];
}
}
rectWidth = _canvas.Width / array.Length; // with is average.
// draw the ui elements.
for (int i = 0; i < array.Length; i++)
{
double height = _canvas.Height * (array[i] / maxValue) - PADDING_TOP;
NumberBar bar = new NumberBar(rectWidth, height, array[i].ToString());
bar.Height = height;
_canvas.Children.Add(bar);
Canvas.SetLeft(bar, i * rectWidth);
Canvas.SetBottom(bar, 0);
_element.Add(i, bar);
}
}
public void Swap(double[] array, double[] temp, int tempIndex, int arrayIndex)
{
ManualResetEventSlim reset = new ManualResetEventSlim(false);
double timeline = 500;
Application.Current.Dispatcher.Invoke(new Action(() =>
{
array[arrayIndex] = temp[tempIndex];
NumberBar oldBar = _element[arrayIndex];
double oldHeight = oldBar.Height;
_canvas.Children.Remove(oldBar);
double newHeight = _canvas.Height * (array[arrayIndex] / maxValue) - PADDING_TOP;
NumberBar newBar = new NumberBar(rectWidth, newHeight, array[arrayIndex].ToString());
_element[arrayIndex] = newBar;
newBar.Mark(true);
DoubleAnimation heightAnimation = new DoubleAnimation(oldHeight, newHeight, new Duration(TimeSpan.FromMilliseconds(timeline)));
_canvas.Children.Insert(arrayIndex, newBar);
Canvas.SetLeft(newBar, arrayIndex * rectWidth);
Canvas.SetBottom(newBar, 0);
srcLock = heightAnimation.CreateClock();
newBar.BeginAnimation(NumberBar.HeightProperty, heightAnimation);
srcLock.Completed += (s, e) =>
{
newBar.Mark(false);
reset.Set();
};
}), DispatcherPriority.Render);
reset.Wait();
}
public void Swap(double[] data, int i, int j)
{
ManualResetEventSlim reset = new ManualResetEventSlim(false);
double timeline = 500;
Application.Current.Dispatcher.Invoke(new Action(() =>
{
// Change the position
NumberBar srcEl = _element[i];
NumberBar targetEl = _element[j];
double sourceLeft = Canvas.GetLeft(srcEl);
double targetLeft = Canvas.GetLeft(targetEl);
double oldSourceLeft = sourceLeft;
double oldTargetLeft = targetLeft;
double temp = targetLeft;
targetLeft = sourceLeft;
sourceLeft = temp;
DoubleAnimation srcAnimation = new DoubleAnimation(oldSourceLeft, sourceLeft, new Duration(TimeSpan.FromMilliseconds(timeline)));
DoubleAnimation targetAnimation = new DoubleAnimation(oldTargetLeft, targetLeft, new Duration(TimeSpan.FromMilliseconds(timeline)));
anLock = targetAnimation.CreateClock();
srcLock = srcAnimation.CreateClock();
targetEl.Mark(true);
srcEl.Mark(true);
srcEl.BeginAnimation(Canvas.LeftProperty, srcAnimation);
targetEl.BeginAnimation(Canvas.LeftProperty, targetAnimation);
EventHandler lockHander = (s, e) =>
{
if (srcLock.CurrentProgress == 1 && anLock.CurrentProgress == 1 &&
reset.IsSet == false)
{
targetEl.Mark(false);
srcEl.Mark(false);
lock (_element)
{
// swap UI element
NumberBar tempBar = _element[i];
_element[i] = _element[j];
_element[j] = tempBar;
Debug.WriteLine(string.Format("Swap: {0}, {1}, Value: {2}, {3}, Data: {4}", i, j, _data[i], _data[j], String.Join(" | ", _data)));
// swap data
temp = _data[i];
_data[i] = _data[j];
_data[j] = temp;
reset.Set();
}
}
};
srcLock.Completed += lockHander;
anLock.Completed += lockHander;
}), DispatcherPriority.Render);
reset.Wait();
}
