/// <summary>
/// Converts a chart values pair to pixels
/// </summary>
/// <param name="chart">Target chart</param>
/// <param name="chartPoint">point in screen</param>
/// <param name="axisX">axis x index</param>
/// <param name="axisY">axis y index</param>
/// <returns></returns>
public static Point ConvertToPixels(this Chart chart, Point chartPoint, int axisX = 0, int axisY = 0)
{
if (chart.Model == null || chart.AxisX.Any(x => x.Model == null))
{
return(new Point());
}
var uw = new CorePoint(
chart.AxisX[axisX].Model.EvaluatesUnitWidth
? ChartFunctionsNew.GetUnitWidth(AxisOrientationNew.X, chart.Model, axisX) / 2
: 0,
chart.AxisY[axisY].Model.EvaluatesUnitWidth
? ChartFunctionsNew.GetUnitWidth(AxisOrientationNew.Y, chart.Model, axisY) / 2
: 0);
return(new Point(
ChartFunctionsNew.ToPlotArea(chartPoint.X, AxisOrientationNew.X, chart.Model, axisX) + uw.X,
ChartFunctionsNew.ToPlotArea(chartPoint.Y, AxisOrientationNew.Y, chart.Model, axisY) + uw.Y));
}
private void PlaceLabel(string text, AxisCoreNew axis, AxisOrientationNew source)
{
_label.Text = text;
var formattedText = new FormattedText(
_label.Text,
CultureInfo.CurrentUICulture,
FlowDirection.LeftToRight,
new Typeface(_label.FontFamily, _label.FontStyle, _label.FontWeight, _label.FontStretch),
_label.FontSize, Brushes.Black);
var transform = new LabelEvaluation(axis.View.LabelsRotation,
formattedText.Width + 10, formattedText.Height, axis, source);
_label.RenderTransform = Math.Abs(transform.LabelAngle) > 1
? new RotateTransform(transform.LabelAngle)
: null;
var toLine = ChartFunctionsNew.ToPlotArea(Value + SectionOffset + SectionWidth * .5, source, Model.Chart,
axis);
var direction = source == AxisOrientationNew.X ? 1 : -1;
toLine += axis.EvaluatesUnitWidth ? direction * ChartFunctionsNew.GetUnitWidth(source, Model.Chart, axis) / 2 : 0;
var toLabel = toLine + transform.GetOffsetBySource(source);
var chart = Model.Chart;
if (axis.IsMerged)
{
const double padding = 4;
if (source == AxisOrientationNew.Y)
{
if (toLabel + transform.ActualHeight >
chart.DrawMargin.Top + chart.DrawMargin.Height)
{
toLabel -= transform.ActualHeight + padding;
}
}
else
{
if (toLabel + transform.ActualWidth >
chart.DrawMargin.Left + chart.DrawMargin.Width)
{
toLabel -= transform.ActualWidth + padding;
}
}
}
var labelTab = axis.Tab;
labelTab += transform.GetOffsetBySource(source.Invert());
if (source == AxisOrientationNew.Y)
{
labelTab += 8 * (axis.Position == AxisPositionNew.LeftBottom ? 1 : -1);
if (Model.View.DisableAnimations || DisableAnimations)
{
Canvas.SetLeft(_label, labelTab);
Canvas.SetTop(_label, toLabel);
return;
}
_label.BeginAnimation(Canvas.TopProperty,
new DoubleAnimation(toLabel, chart.View.AnimationsSpeed));
_label.BeginAnimation(Canvas.LeftProperty,
new DoubleAnimation(labelTab, chart.View.AnimationsSpeed));
}
else
{
if (Model.View.DisableAnimations || DisableAnimations)
{
Canvas.SetLeft(_label, toLabel);
Canvas.SetTop(_label, labelTab);
return;
}
_label.BeginAnimation(Canvas.LeftProperty,
new DoubleAnimation(toLabel, chart.View.AnimationsSpeed));
_label.BeginAnimation(Canvas.TopProperty,
new DoubleAnimation(labelTab, chart.View.AnimationsSpeed));
}
}
