private void AlgorithmSetEvent(object sender, Tuple <int, SortedItem> e)
{
e.Item2.SetColor(Color.Red);
VisualizationPanel.Refresh();
Thread.Sleep(20);
e.Item2.SetPosition(e.Item1);
VisualizationPanel.Refresh();
Thread.Sleep(20);
e.Item2.SetColor(Color.Blue);
VisualizationPanel.Refresh();
Thread.Sleep(20);
}
private void AlgorithmCompareEvent(object sender, Tuple <SortedItem, SortedItem> e)
{
e.Item1.SetColor(Color.Red);
e.Item2.SetColor(Color.Green);
VisualizationPanel.Refresh();
Thread.Sleep(20);
e.Item1.SetColor(Color.Blue);
e.Item2.SetColor(Color.Blue);
VisualizationPanel.Refresh();
Thread.Sleep(20);
}
/// <summary>
/// Adds a new panel to the container.
/// </summary>
/// <param name="panel">The panel to be added to the container.</param>
/// <param name="isRootChild">Flag indicating whether panel is root child.</param>
public void AddPanel(VisualizationPanel panel, bool isRootChild = true)
{
panel.SetParentContainer(this);
if (isRootChild)
{
if (this.CurrentPanel != null)
{
this.Panels.Insert(this.Panels.IndexOf(this.CurrentPanel) + 1, panel);
}
else
{
this.Panels.Add(panel);
}
}
this.CurrentPanel = panel;
}
private void UpdateContextMenu(StackPanel panel)
{
VisualizationPanel currentPanel = VisualizationContext.Instance.VisualizationContainer.CurrentPanel;
List <VisualizationPanelType> compatiblePanelTypes = VisualizationContext.Instance.VisualizerMap.GetCompatiblePanelTypes(currentPanel);
foreach (object item in panel.ContextMenu.Items)
{
if (item is MenuItem menuItem)
{
// Enable/disable all "visualize in current panel" menuitems based on the current visualization panel in the container
if (menuItem.Tag is VisualizerMetadata visualizerMetadata && visualizerMetadata.IsInNewPanel == false)
{
menuItem.Visibility = compatiblePanelTypes.Contains(visualizerMetadata.VisualizationPanelType) ? Visibility.Visible : Visibility.Collapsed;
}
}
}
}
private HitTestResultBehavior ContextMenuHitTestResult(HitTestResult result)
{
// Find the visualization panel view that the mouse is over
DependencyObject dependencyObject = result.VisualHit;
while (dependencyObject != null)
{
if (dependencyObject is IContextMenuItemsSource contextMenuItemsSource && contextMenuItemsSource.ContextMenuItemsSourceType == ContextMenuItemsSourceType.VisualizationPanel)
{
// Get the visualization panel related to the visualization panel view
this.mouseOverVisualizationPanel = (contextMenuItemsSource as VisualizationPanelView).DataContext as VisualizationPanel;
return(HitTestResultBehavior.Stop);
}
dependencyObject = VisualTreeHelper.GetParent(dependencyObject);
}
return(HitTestResultBehavior.Continue);
}
private int FindPanelMoveIndices(VisualizationPanel droppedPanel, int position, out int currentPanelIndex)
{
// Find the index of the panel whose vertical center is closest the panel being dragged's vertical center
var visualizationContainer = droppedPanel.Container;
currentPanelIndex = visualizationContainer.Panels.IndexOf(droppedPanel);
// Look through the shown panels and figure out when we are below the previous vertical center by above
// the next vertical center
double previousVerticalCenter = double.NaN;
double currentLocation = double.NaN;
for (int i = 0; i < visualizationContainer.Panels.Count; i++)
{
if (visualizationContainer.Panels[i].IsShown)
{
if (double.IsNaN(previousVerticalCenter))
{
currentLocation = visualizationContainer.Panels[i].Height / 2;
}
else
{
currentLocation += visualizationContainer.Panels[i].Height / 2;
// Now, if we are after the previous location but before the current one
if (position > previousVerticalCenter && position <= currentLocation)
{
// Then we've found the drop position
return(currentPanelIndex < i ? i - 1 : i);
}
}
// Save the previous vertical center
previousVerticalCenter = currentLocation;
// Increment the position
currentLocation += visualizationContainer.Panels[i].Height / 2;
}
}
return(visualizationContainer.Panels.Count - 1);
}
private void BttnSort_Click(AlgorithmBase <SortedItem> algorithm)
{
RefreshItems();
for (int i = 0; i < algorithm.Items.Count; i++)
{
algorithm.Items[i].SetPosition(i);
}
VisualizationPanel.Refresh();
algorithm.CompareEvent += AlgorithmCompareEvent;
algorithm.SwopEvent += AlgorithmSwopEvent;
algorithm.SetEvent += AlgorithmSetEvent;
var time = algorithm.Sort();
TimeLabel.Text = "Time: " + time.Seconds;
ComparsionsLabel.Text = "Compare: " + algorithm.ComparsionCount;
SwopsLabel.Text = "Swops: " + algorithm.ComparsionCount;
}
/// <summary>
/// Called internally by the VisualizationPanel to connect the parent chain.
/// </summary>
/// <param name="panel">Panel to connect this visualization object to.</param>
internal void SetParentPanel(VisualizationPanel panel)
{
if (this.panel != null)
{
this.OnDisconnect();
this.navigator.CursorChanged -= this.OnCursorChanged;
this.panel = null;
this.container = null;
this.navigator = null;
}
if (panel != null)
{
this.panel = panel;
this.container = this.panel.Container;
this.navigator = this.container.Navigator;
this.navigator.CursorChanged += this.OnCursorChanged;
this.OnConnect();
}
}
private void DropStream(DragEventArgs e)
{
if (e.Data.GetData(DragDropDataName.StreamTreeNode) is StreamTreeNode streamTreeNode)
{
// Get the mouse position
Point mousePosition = e.GetPosition(this.Items);
// Get the visualization panel (if any) that the mouse is above
VisualizationPanel visualizationPanel = this.GetVisualizationPanelUnderMouse(mousePosition);
// Get the list of commands that are compatible with the user dropping the stream here
var visualizers = streamTreeNode.GetCompatibleVisualizers(visualizationPanel, isUniversal: false, isInNewPanel: false);
// If there are compatible visualization commands, select the first one
if (visualizers.Any())
{
VisualizationContext.Instance.VisualizeStream(streamTreeNode, visualizers.First(), visualizationPanel);
}
}
}
private void DropStream(DragEventArgs e)
{
StreamTreeNode streamTreeNode = e.Data.GetData(DragDropDataName.StreamTreeNode) as StreamTreeNode;
if (streamTreeNode != null)
{
// Get the mouse position
Point mousePosition = e.GetPosition(this.Items);
// Get the visualization panel (if any) that the mouse is above
VisualizationPanel visualizationPanel = this.GetVisualizationPanelUnderMouse(mousePosition);
// Get the list of commands that are compatible with the user dropping the stream here
List <VisualizerMetadata> metadatas = this.GetStreamDropCommands(streamTreeNode, visualizationPanel);
// If there's any compatible visualization commands, execute the first one
if (metadatas.Count > 0)
{
VisualizationContext.Instance.VisualizeStream(streamTreeNode, metadatas[0], visualizationPanel);
}
}
}
private void AlgorithmSwopEvent(object sender, Tuple <SortedItem, SortedItem> e)
{
e.Item1.SetColor(Color.Aqua);
e.Item2.SetColor(Color.Brown);
VisualizationPanel.Refresh();
Thread.Sleep(20);
var temp = e.Item1.Number;
e.Item1.SetPosition(e.Item2.Number);
e.Item2.SetPosition(temp);
VisualizationPanel.Refresh();
Thread.Sleep(20);
e.Item1.SetColor(Color.Blue);
e.Item2.SetColor(Color.Blue);
VisualizationPanel.Refresh();
Thread.Sleep(20);
}
/// <inheritdoc/>
public void AppendContextMenuItems(List <MenuItem> menuItems)
{
if (this.DataContext is InstantVisualizationContainer instantVisualizationContainer)
{
// Find the child panel that the mouse is over
// Run a hit test at the mouse cursor
this.mouseOverVisualizationPanel = null;
VisualTreeHelper.HitTest(
this,
null,
new HitTestResultCallback(this.ContextMenuHitTestResult),
new PointHitTestParameters(Mouse.GetPosition(this)));
if (this.mouseOverVisualizationPanel != null)
{
menuItems.Add(MenuItemHelper.CreateMenuItem(IconSourcePath.InstantContainerAddCellLeft, $"Insert Cell to the Left", instantVisualizationContainer.CreateIncreaseCellCountCommand(this.mouseOverVisualizationPanel, true)));
menuItems.Add(MenuItemHelper.CreateMenuItem(IconSourcePath.InstantContainerAddCellRight, $"Insert Cell to the Right", instantVisualizationContainer.CreateIncreaseCellCountCommand(this.mouseOverVisualizationPanel, false)));
menuItems.Add(MenuItemHelper.CreateMenuItem(null, $"Remove Cell", instantVisualizationContainer.CreateRemoveCellCommand(this.mouseOverVisualizationPanel)));
menuItems.Add(MenuItemHelper.CreateMenuItem(IconSourcePath.InstantContainerRemoveCell, $"Remove {instantVisualizationContainer.Name}", instantVisualizationContainer.RemovePanelCommand));
}
}
}
/// <summary>
/// Removes the indicated panel.
/// </summary>
/// <param name="panel">The panel to be removed from the container.</param>
public void RemovePanel(VisualizationPanel panel)
{
// change the current panel
if (this.CurrentPanel == panel)
{
this.CurrentPanel = null;
}
// If the panel being deleted contains the stream currently being snapped to, then reset the snap to stream object
if ((this.snapToVisualizationObject != null) && panel.VisualizationObjects.Contains(this.snapToVisualizationObject))
{
this.SnapToVisualizationObject = null;
}
panel.Clear();
this.Panels.Remove(panel);
if ((this.CurrentPanel == null) && (this.Panels.Count > 0))
{
this.CurrentPanel = this.Panels.Last();
}
}
private void Items_Drop(object sender, DragEventArgs e)
{
if (e.Handled == false)
{
string dragOperation = e.Data.GetData("DragOperation") as string;
if (dragOperation == "ReorderPanels")
{
// Get the VisualizationPanel that's being dropped
VisualizationPanel droppedPanel = e.Data.GetData("VisualizationPanel") as VisualizationPanel;
if (droppedPanel != null)
{
// Find the index of the panel being moved, and the index we should move it to
int moveToIndex = this.FindPanelMoveIndices(droppedPanel, this.dragDropAdorner.VerticalCenter, out int moveFromIndex);
// Check that we're not just trying to put the panel back where it started
if (moveFromIndex != moveToIndex)
{
droppedPanel.Container.Panels.Move(moveFromIndex, moveToIndex);
}
// Timeline Visualization Panels have multiple drag & drop operation types, only one of which
// can be in effect at any time. If the panel being dropped is one of those then we need to
// signal to it that this drag operation is done.
TimelineVisualizationPanelView visualizationPanelView = e.Data.GetData("VisualizationPanelView") as TimelineVisualizationPanelView;
if (visualizationPanelView != null)
{
visualizationPanelView.FinishDragDrop();
}
}
this.dragDropAdorner.Hide();
this.Cursor = Cursors.Arrow;
}
e.Handled = true;
}
}
private int FindPanelMoveIndices(VisualizationPanel droppedPanel, int panelVerticalCenter, out int currentPanelIndex)
{
// Find the index of the panel whose vertical center is closest the panel being dragged's vertical center
VisualizationContainer visualizationContainer = droppedPanel.Container;
currentPanelIndex = -1;
// Work out which Visualization Panel's vertical center is closest to the vertical center of the panel being dropped
double currentVerticalCenter = 0;
double minDelta = double.MaxValue;
int targetIndex = -1;
for (int index = 0; index < visualizationContainer.Panels.Count; index++)
{
VisualizationPanel visualizationPanel = visualizationContainer.Panels[index];
// If this is the panel we're dropping, we need that info too
if (visualizationPanel == droppedPanel)
{
currentPanelIndex = index;
}
// Is this panel's vertical center closer to our panel's vertical center
currentVerticalCenter += visualizationPanel.Height / 2;
double deltaY = Math.Abs(panelVerticalCenter - currentVerticalCenter);
if (deltaY < minDelta)
{
targetIndex = index;
minDelta = deltaY;
}
currentVerticalCenter += visualizationPanel.Height / 2;
}
return(targetIndex);
}
private List <VisualizerMetadata> GetStreamDropCommands(Type messageType, VisualizationPanel visualizationPanel)
{
// Get all the commands that are applicable to this stream tree node and the panel it was dropped over
return(VisualizationContext.Instance.VisualizerMap.GetByDataTypeAndPanelAboveSeparator(messageType, visualizationPanel));
}
private List <VisualizerMetadata> GetStreamDropCommands(StreamTreeNode streamTreeNode, VisualizationPanel visualizationPanel)
{
List <VisualizerMetadata> metadatas = new List <VisualizerMetadata>();
// Get all the commands that are applicable to this stream tree node and the panel it was dropped over
Type streamType = VisualizationContext.Instance.GetStreamType(streamTreeNode);
metadatas = VisualizationContext.Instance.VisualizerMap.GetByDataTypeAndPanelAboveSeparator(streamType, visualizationPanel);
return(metadatas);
}
/// <summary>
/// Gets all the above the separator entries for a given datatype and visualization panel.
/// </summary>
/// <param name="dataType">The datatype to search for.</param>
/// <param name="visualizationPanel">The type of visualization panel to search for.</param>
/// <returns>A list of visualizer metadata objects.</returns>
public List <VisualizerMetadata> GetByDataTypeAndPanelAboveSeparator(Type dataType, VisualizationPanel visualizationPanel)
{
this.EnsureInitialized();
List <VisualizerMetadata> results;
if (visualizationPanel == null)
{
// Dropping stream into empty space. Find the "in new panel" commands that are above the separator and have a compatible data type
results = this.visualizers.FindAll(e => (dataType == e.DataType || dataType.IsSubclassOf(e.DataType)) && e.IsInNewPanel && e.IsAboveSeparator);
}
else
{
// Dropping onto a specific panel. Find the non "in new panel" commands that are above the separator, have a compatible panel type, and compatible data type
List <VisualizationPanelType> compatiblePanels = this.GetCompatiblePanelTypes(visualizationPanel);
results = this.visualizers.FindAll(e => (dataType == e.DataType || dataType.IsSubclassOf(e.DataType)) && compatiblePanels.Contains(e.VisualizationPanelType) && !e.IsInNewPanel && e.IsAboveSeparator);
}
return(results);
}
