private static IList<TextLabel> GetLabels(Axis axis)
{
AxisScale scale = axis.Scale;
IList<TextLabel> labels = null;
TextScale textScale = scale as TextScale;
if (textScale != null)
labels = (textScale).Labels;
return labels;
}
private static AxisHitTestResult HandleAxisHit(Axis axis, UIElement element, Point point)
{
double value;
if (element is FrameworkElement && ((FrameworkElement)element).Tag is double)
value = (double)((FrameworkElement)element).Tag; // The value for tick marks and tick labels is in the tag.
else
value = axis.GetValue(point);
return new AxisHitTestResult
{
ChartPanel = GetChartPanel(axis),
Axis = axis,
Value = value,
Visual = element,
};
}
/// <summary>
/// Sets the value of the <see cref="P:DigitalRune.Windows.Charts.ChartPanel.YAxis"/>
/// attached property to a given element.
/// </summary>
/// <param name="element">The element on which to set the property value.</param>
/// <param name="value">The property value to set.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="element"/> is <see langword="null"/>.
/// </exception>
public static void SetYAxis(DependencyObject element, Axis value)
{
if (element == null)
throw new ArgumentNullException("element");
element.SetValue(YAxisProperty, value);
}
public static Rect GetChartAreaBounds(Axis xAxis, Axis yAxis)
{
if (xAxis == null || yAxis == null)
return Rect.Empty;
if (xAxis.Orientation != Orientation.Horizontal)
throw new ArgumentException("X-axis must be a horizontal axis.", "xAxis");
if (yAxis.Orientation != Orientation.Vertical)
throw new ArgumentException("Y-axis must be a vertical axis.", "yAxis");
return new Rect(xAxis.OriginX, yAxis.OriginY - yAxis.Length, xAxis.Length, yAxis.Length);
}
private static bool MatchesYAxis2(Axis axis)
{
var chartPanel = VisualTreeHelper.GetParent(axis) as DefaultChartPanel;
if (chartPanel != null)
return (chartPanel.YAxis2 == axis);
return false;
}
private static bool MatchesYAxes(Axis axis)
{
return (axis != null && axis.IsYAxis);
}
private static bool MatchesNone(Axis axis)
{
return false;
}
//--------------------------------------------------------------
private static bool MatchesAll(Axis axis)
{
return true;
}
/// <summary>
/// Initializes a new instance of the <see cref="DefaultChartPanel"/> class.
/// </summary>
public DefaultChartPanel()
{
// Add the axis as the first canvas children.
XAxis1 = new Axis { Tag = "XAxis1", LabelsAboveAxis = false, Orientation = Orientation.Horizontal };
YAxis1 = new Axis { Tag = "YAxis1", LabelsAboveAxis = true, Orientation = Orientation.Vertical };
XAxis2 = new Axis { Tag = "XAxis2", LabelsAboveAxis = true, Orientation = Orientation.Horizontal };
YAxis2 = new Axis { Tag = "YAxis2", LabelsAboveAxis = false, Orientation = Orientation.Vertical };
// Bind styles of axes
Binding binding = new Binding("XAxis1Style") { Source = this };
XAxis1.SetBinding(StyleProperty, binding);
binding = new Binding("YAxis1Style") { Source = this };
YAxis1.SetBinding(StyleProperty, binding);
binding = new Binding("XAxis2Style") { Source = this };
XAxis2.SetBinding(StyleProperty, binding);
binding = new Binding("YAxis2Style") { Source = this };
YAxis2.SetBinding(StyleProperty, binding);
// Set z-index of axes (usually 0).
#if SILVERLIGHT
Canvas.SetZIndex(XAxis1, AxisZIndex);
Canvas.SetZIndex(YAxis1, AxisZIndex);
Canvas.SetZIndex(XAxis2, AxisZIndex);
Canvas.SetZIndex(YAxis2, AxisZIndex);
#else
SetZIndex(XAxis1, AxisZIndex);
SetZIndex(YAxis1, AxisZIndex);
SetZIndex(XAxis2, AxisZIndex);
SetZIndex(YAxis2, AxisZIndex);
#endif
// Add axes as the first children of the panel.
Children.Add(XAxis1);
Children.Add(YAxis1);
Children.Add(XAxis2);
Children.Add(YAxis2);
XAxis1.Invalidated += OnAxisInvalidated;
YAxis1.Invalidated += OnAxisInvalidated;
XAxis2.Invalidated += OnAxisInvalidated;
YAxis2.Invalidated += OnAxisInvalidated;
}
