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 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_MouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
DoSelection(lastHoveredDataPoint);
selectionRectangle.Visibility = Visibility.Collapsed;
clickedDataPoint = null;
lastHoveredDataPoint = null;
currentHeatmap = null;
}
private static void EnsureSelectionRectangleVisualParent(RadHeatMap heatmap)
{
var newParentGrid = Telerik.Windows.Controls.ChildrenOfTypeExtensions.ChildrenOfType <Grid>(heatmap).First();
var oldParentGrid = selectionRectangleHost.Parent as Grid;
if (oldParentGrid != newParentGrid && oldParentGrid != null)
{
oldParentGrid.Children.Remove(selectionRectangleHost);
}
if (oldParentGrid != newParentGrid)
{
newParentGrid.Children.Add(selectionRectangleHost);
}
}
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 EnsureSelectionRectangleVisualParent(RadHeatMap heatmap)
{
var newParentGrid = Telerik.Windows.Controls.ChildrenOfTypeExtensions.ChildrenOfType<Grid>(heatmap).First();
var oldParentGrid = selectionRectangleHost.Parent as Grid;
if (oldParentGrid != newParentGrid && oldParentGrid != null)
{
oldParentGrid.Children.Remove(selectionRectangleHost);
}
if (oldParentGrid != newParentGrid)
{
newParentGrid.Children.Add(selectionRectangleHost);
}
}
private static void Heatmap_MouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
DoSelection(lastHoveredDataPoint);
selectionRectangle.Visibility = Visibility.Collapsed;
clickedDataPoint = null;
lastHoveredDataPoint = null;
currentHeatmap = null;
}
