private static void DoSelection(RadHeatMap heatMap, HeatMapCellDataPoint hoveredDataPoint)
{
if (clickedDataPoint == null || hoveredDataPoint == null)
{
return;
}
int startRowIndex = Math.Min(clickedDataPoint.RowIndex, hoveredDataPoint.RowIndex);
int endRowIndex = Math.Max(clickedDataPoint.RowIndex, hoveredDataPoint.RowIndex);
int startColumnIndex = Math.Min(clickedDataPoint.ColumnIndex, hoveredDataPoint.ColumnIndex);
int endColumnIndex = Math.Max(clickedDataPoint.ColumnIndex, hoveredDataPoint.ColumnIndex);
var cDefinition = heatMap.Definition as CategoricalDefinition;
if (cDefinition != null)
{
DoSelection(cDefinition, startRowIndex, endRowIndex, startColumnIndex, endColumnIndex);
}
var hDefinition = heatMap.Definition as HorizontalDefinition;
if (hDefinition != null)
{
DoSelection(hDefinition, startRowIndex, endRowIndex);
}
var vDefinition = heatMap.Definition as VerticalDefinition;
if (vDefinition != null)
{
DoSelection(vDefinition, startColumnIndex, endColumnIndex);
}
}
private static void Heatmap_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
{
if (currentHeatmap != sender)
{
return;
}
if (clickedDataPoint == null || currentHeatmap.HoveredCellDataPoint == null)
{
return;
}
lastHoveredDataPoint = currentHeatmap.HoveredCellDataPoint;
var pos = e.GetPosition(currentHeatmap);
Rect r;
if (currentHeatmap.Definition is CategoricalDefinition)
{
r = new Rect(new Point(clickedX, clickedY), pos);
}
else if (currentHeatmap.Definition is HorizontalDefinition)
{
r = new Rect(new Point(0, clickedY), new Point(currentHeatmap.ActualWidth, pos.Y));
}
else
{
r = new Rect(new Point(clickedX, 0), new Point(pos.X, currentHeatmap.ActualHeight));
}
Canvas.SetLeft(selectionRectangle, r.Left);
Canvas.SetTop(selectionRectangle, r.Top);
selectionRectangle.Width = r.Width;
selectionRectangle.Height = r.Height;
}
private static void DoSelection(HeatMapCellDataPoint hoveredDataPoint)
{
if (clickedDataPoint == null || hoveredDataPoint == null)
{
return;
}
int startRowIndex = Math.Min(clickedDataPoint.RowIndex, hoveredDataPoint.RowIndex);
int endRowIndex = Math.Max(clickedDataPoint.RowIndex, hoveredDataPoint.RowIndex);
int startColumnIndex = Math.Min(clickedDataPoint.ColumnIndex, hoveredDataPoint.ColumnIndex);
int endColumnIndex = Math.Max(clickedDataPoint.ColumnIndex, hoveredDataPoint.ColumnIndex);
var cDefinition = currentHeatmap.Definition as CategoricalDefinition;
if (cDefinition != null)
{
DoSelection(cDefinition, startRowIndex, endRowIndex, startColumnIndex, endColumnIndex);
}
var hDefinition = currentHeatmap.Definition as HorizontalDefinition;
if (hDefinition != null)
{
DoSelection(hDefinition, startRowIndex, endRowIndex);
}
var vDefinition = currentHeatmap.Definition as VerticalDefinition;
if (vDefinition != null)
{
DoSelection(vDefinition, startColumnIndex, endColumnIndex);
}
}
private static void Heatmap_MouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
DoSelection(lastHoveredDataPoint);
selectionRectangle.Visibility = Visibility.Collapsed;
clickedDataPoint = null;
lastHoveredDataPoint = null;
currentHeatmap = null;
}
private static void Heatmap_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
currentHeatmap = (RadHeatMap)sender;
if (currentHeatmap.HoveredCellDataPoint == null)
{
return;
}
EnsureSelectionRectangleVisualParent();
selectionRectangle.Visibility = Visibility.Visible;
selectionRectangle.Width = 0;
selectionRectangle.Height = 0;
var pos = e.GetPosition(currentHeatmap);
clickedX = pos.X;
clickedY = pos.Y;
clickedDataPoint = currentHeatmap.HoveredCellDataPoint;
lastHoveredDataPoint = clickedDataPoint;
}
private static void Heatmap_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
currentHeatmap = (RadHeatMap)sender;
if (currentHeatmap.HoveredCellDataPoint == null)
{
return;
}
EnsureSelectionRectangleVisualParent();
selectionRectangle.Visibility = Visibility.Visible;
selectionRectangle.Width = 0;
selectionRectangle.Height = 0;
var pos = e.GetPosition(currentHeatmap);
clickedX = pos.X;
clickedY = pos.Y;
clickedDataPoint = currentHeatmap.HoveredCellDataPoint;
lastHoveredDataPoint = clickedDataPoint;
}
private static void Heatmap_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
{
var heatmap = (RadHeatMap)sender;
if (clickedDataPoint == null || heatmap.HoveredCellDataPoint == null)
{
return;
}
lastHoveredDataPoint = heatmap.HoveredCellDataPoint;
var pos = e.GetPosition(heatmap);
Rect r;
if (heatmap.Definition is CategoricalDefinition)
{
r = new Rect(new Point(clickedX, clickedY), pos);
}
else if (heatmap.Definition is HorizontalDefinition)
{
r = new Rect(new Point(0, clickedY), new Point(heatmap.ActualWidth, pos.Y));
}
else
{
r = new Rect(new Point(clickedX, 0), new Point(pos.X, heatmap.ActualHeight));
}
Canvas.SetLeft(selectionRectangle, r.Left);
Canvas.SetTop(selectionRectangle, r.Top);
selectionRectangle.Width = r.Width;
selectionRectangle.Height = r.Height;
}
private static void Heatmap_MouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
var heatmap = (RadHeatMap)sender;
DoSelection(heatmap, lastHoveredDataPoint);
selectionRectangle.Visibility = Visibility.Collapsed;
clickedDataPoint = null;
lastHoveredDataPoint = null;
}