/// <inheritdoc cref="ChartElement{TDrawingContext}.Measure(Chart{TDrawingContext})"/>
public override void Measure(Chart <TDrawingContext> chart)
{
var cartesianChart = (CartesianChart <TDrawingContext>)chart;
var primaryAxis = cartesianChart.YAxes[ScalesYAt];
var secondaryAxis = cartesianChart.XAxes[ScalesXAt];
var drawLocation = cartesianChart.DrawMarginLocation;
var drawMarginSize = cartesianChart.DrawMarginSize;
var secondaryScale = new Scaler(drawLocation, drawMarginSize, secondaryAxis);
var primaryScale = new Scaler(drawLocation, drawMarginSize, primaryAxis);
var previousPrimaryScale = primaryAxis.PreviousDataBounds is null
? null
: new Scaler(drawLocation, drawMarginSize, primaryAxis, true);
var previousSecondaryScale = secondaryAxis.PreviousDataBounds is null
? null
: new Scaler(drawLocation, drawMarginSize, secondaryAxis, true);
var helper = new MeasureHelper(secondaryScale, cartesianChart, this, secondaryAxis, primaryScale.ToPixels(pivot));
var pHelper = previousSecondaryScale == null || previousPrimaryScale == null
? null
: new MeasureHelper(
previousSecondaryScale, cartesianChart, this, secondaryAxis, previousPrimaryScale.ToPixels(pivot));
var actualZIndex = ZIndex == 0 ? ((ISeries)this).SeriesId : ZIndex;
if (Fill is not null)
{
Fill.ZIndex = actualZIndex + 0.1;
Fill.SetClipRectangle(cartesianChart.Canvas, new LvcRectangle(drawLocation, drawMarginSize));
cartesianChart.Canvas.AddDrawableTask(Fill);
}
if (Stroke is not null)
{
Stroke.ZIndex = actualZIndex + 0.2;
Stroke.SetClipRectangle(cartesianChart.Canvas, new LvcRectangle(drawLocation, drawMarginSize));
cartesianChart.Canvas.AddDrawableTask(Stroke);
}
if (DataLabelsPaint is not null)
{
DataLabelsPaint.ZIndex = actualZIndex + 0.3;
DataLabelsPaint.SetClipRectangle(cartesianChart.Canvas, new LvcRectangle(drawLocation, drawMarginSize));
cartesianChart.Canvas.AddDrawableTask(DataLabelsPaint);
}
var dls = (float)DataLabelsSize;
var toDeletePoints = new HashSet <ChartPoint>(everFetched);
var rx = (float)Rx;
var ry = (float)Ry;
foreach (var point in Fetch(cartesianChart))
{
var visual = point.Context.Visual as TVisual;
var primary = primaryScale.ToPixels(point.PrimaryValue);
var secondary = secondaryScale.ToPixels(point.SecondaryValue);
var b = Math.Abs(primary - helper.p);
if (point.IsNull)
{
if (visual is not null)
{
visual.X = secondary - helper.uwm + helper.cp;
visual.Y = helper.p;
visual.Width = helper.uw;
visual.Height = 0;
visual.RemoveOnCompleted = true;
point.Context.Visual = null;
}
continue;
}
if (visual is null)
{
var xi = secondary - helper.uwm + helper.cp;
var pi = helper.p;
var uwi = helper.uw;
var hi = 0f;
if (previousSecondaryScale is not null && previousPrimaryScale is not null && pHelper is not null)
{
var previousPrimary = previousPrimaryScale.ToPixels(point.PrimaryValue);
var bp = Math.Abs(previousPrimary - pHelper.p);
var cyp = point.PrimaryValue > pivot ? previousPrimary : previousPrimary - bp;
xi = previousSecondaryScale.ToPixels(point.SecondaryValue) - pHelper.uwm + pHelper.cp;
pi = cartesianChart.IsZoomingOrPanning ? cyp : pHelper.p;
uwi = pHelper.uw;
hi = cartesianChart.IsZoomingOrPanning ? bp : 0;
}
var r = new TVisual
{
X = xi,
Y = pi,
Width = uwi,
Height = hi
};
if (_isRounded)
{
var rounded = (IRoundedRectangleChartPoint <TDrawingContext>)r;
rounded.Rx = rx;
rounded.Ry = ry;
}
visual = r;
point.Context.Visual = visual;
OnPointCreated(point);
_ = everFetched.Add(point);
}
if (Fill is not null)
{
Fill.AddGeometryToPaintTask(cartesianChart.Canvas, visual);
}
if (Stroke is not null)
{
Stroke.AddGeometryToPaintTask(cartesianChart.Canvas, visual);
}
var cy = point.PrimaryValue > pivot ? primary : primary - b;
var x = secondary - helper.uwm + helper.cp;
visual.X = x;
visual.Y = cy;
visual.Width = helper.uw;
visual.Height = b;
if (_isRounded)
{
var rounded = (IRoundedRectangleChartPoint <TDrawingContext>)visual;
rounded.Rx = rx;
rounded.Ry = ry;
}
visual.RemoveOnCompleted = false;
var ha = new RectangleHoverArea().SetDimensions(secondary - helper.uwm + helper.cp, cy, helper.uw, b);
point.Context.HoverArea = ha;
OnPointMeasured(point);
_ = toDeletePoints.Remove(point);
if (DataLabelsPaint is not null)
{
var label = (TLabel?)point.Context.Label;
if (label is null)
{
var l = new TLabel {
X = secondary - helper.uwm + helper.cp, Y = helper.p
};
_ = l.TransitionateProperties(nameof(l.X), nameof(l.Y))
.WithAnimation(animation =>
animation
.WithDuration(AnimationsSpeed ?? cartesianChart.AnimationsSpeed)
.WithEasingFunction(EasingFunction ?? cartesianChart.EasingFunction));
l.CompleteAllTransitions();
label = l;
point.Context.Label = l;
}
DataLabelsPaint.AddGeometryToPaintTask(cartesianChart.Canvas, label);
label.Text = DataLabelsFormatter(new TypedChartPoint <TModel, TVisual, TLabel, TDrawingContext>(point));
label.TextSize = dls;
label.Padding = DataLabelsPadding;
var labelPosition = GetLabelPosition(
x, cy, helper.uw, b, label.Measure(DataLabelsPaint),
DataLabelsPosition, SeriesProperties, point.PrimaryValue > Pivot);
label.X = labelPosition.X;
label.Y = labelPosition.Y;
}
}
foreach (var point in toDeletePoints)
{
if (point.Context.Chart != cartesianChart.View)
{
continue;
}
SoftDeleteOrDisposePoint(point, primaryScale, secondaryScale);
_ = everFetched.Remove(point);
}
}
/// <inheritdoc cref="ChartElement{TDrawingContext}.Measure(Chart{TDrawingContext})"/>
public override void Measure(Chart <TDrawingContext> chart)
{
var cartesianChart = (CartesianChart <TDrawingContext>)chart;
var primaryAxis = cartesianChart.YAxes[ScalesYAt];
var secondaryAxis = cartesianChart.XAxes[ScalesXAt];
var drawLocation = cartesianChart.DrawMarginLocation;
var drawMarginSize = cartesianChart.DrawMarginSize;
var secondaryScale = new Scaler(drawLocation, drawMarginSize, primaryAxis);
var previousSecondaryScale =
primaryAxis.PreviousDataBounds is null ? null : new Scaler(drawLocation, drawMarginSize, primaryAxis);
var primaryScale = new Scaler(drawLocation, drawMarginSize, secondaryAxis);
var uw = secondaryScale.MeasureInPixels(secondaryAxis.UnitWidth); //secondaryScale.ToPixels(1f) - secondaryScale.ToPixels(0f);
var uwm = 0.5f * uw;
var sw = Stroke?.StrokeThickness ?? 0;
var p = primaryScale.ToPixels(pivot);
var pos = cartesianChart.SeriesContext.GetStackedColumnPostion(this);
var count = cartesianChart.SeriesContext.GetStackedColumnSeriesCount();
var cp = 0f;
if (count > 1)
{
uw /= count;
uwm = 0.5f * uw;
cp = (pos - count / 2f) * uw + uwm;
}
if (uw > MaxBarWidth)
{
uw = (float)MaxBarWidth;
uwm = uw / 2f;
}
var actualZIndex = ZIndex == 0 ? ((ISeries)this).SeriesId : ZIndex;
if (Fill is not null)
{
Fill.ZIndex = actualZIndex + 0.1;
Fill.SetClipRectangle(cartesianChart.Canvas, new LvcRectangle(drawLocation, drawMarginSize));
cartesianChart.Canvas.AddDrawableTask(Fill);
}
if (Stroke is not null)
{
Stroke.ZIndex = actualZIndex + 0.2;
Stroke.SetClipRectangle(cartesianChart.Canvas, new LvcRectangle(drawLocation, drawMarginSize));
cartesianChart.Canvas.AddDrawableTask(Stroke);
}
if (DataLabelsPaint is not null)
{
DataLabelsPaint.ZIndex = actualZIndex + 0.3;
DataLabelsPaint.SetClipRectangle(cartesianChart.Canvas, new LvcRectangle(drawLocation, drawMarginSize));
cartesianChart.Canvas.AddDrawableTask(DataLabelsPaint);
}
var dls = (float)DataLabelsSize;
var toDeletePoints = new HashSet <ChartPoint>(everFetched);
var stacker = cartesianChart.SeriesContext.GetStackPosition(this, GetStackGroup());
if (stacker is null)
{
throw new NullReferenceException("Unexpected null stacker");
}
var rx = (float)Rx;
var ry = (float)Ry;
foreach (var point in Fetch(cartesianChart))
{
var visual = point.Context.Visual as TVisual;
var secondary = secondaryScale.ToPixels(point.SecondaryValue);
if (point.IsNull)
{
if (visual is not null)
{
visual.X = p;
visual.Y = secondary - uwm + cp;
visual.Width = 0;
visual.Height = uw;
visual.RemoveOnCompleted = true;
point.Context.Visual = null;
}
continue;
}
if (visual is null)
{
var yi = secondary - uwm + cp;
if (previousSecondaryScale is not null)
{
yi = previousSecondaryScale.ToPixels(point.SecondaryValue) - uwm + cp;
}
var r = new TVisual
{
X = p,
Y = yi,
Width = 0,
Height = uw,
Rx = rx,
Ry = ry
};
visual = r;
point.Context.Visual = visual;
OnPointCreated(point);
_ = everFetched.Add(point);
}
if (Fill is not null)
{
Fill.AddGeometryToPaintTask(cartesianChart.Canvas, visual);
}
if (Stroke is not null)
{
Stroke.AddGeometryToPaintTask(cartesianChart.Canvas, visual);
}
var sizedGeometry = visual;
var sy = stacker.GetStack(point);
var primaryI = primaryScale.ToPixels(sy.Start);
var primaryJ = primaryScale.ToPixels(sy.End);
var y = secondary - uwm + cp;
sizedGeometry.X = primaryJ;
sizedGeometry.Y = y;
sizedGeometry.Width = primaryI - primaryJ;
sizedGeometry.Height = uw;
sizedGeometry.Rx = rx;
sizedGeometry.Ry = ry;
sizedGeometry.RemoveOnCompleted = false;
point.Context.HoverArea = new RectangleHoverArea().SetDimensions(secondary - uwm + cp, primaryJ, uw, primaryI - primaryJ);
OnPointMeasured(point);
_ = toDeletePoints.Remove(point);
if (DataLabelsPaint is not null)
{
var label = (TLabel?)point.Context.Label;
if (label is null)
{
var l = new TLabel {
X = secondary - uwm + cp, Y = p
};
_ = l.TransitionateProperties(nameof(l.X), nameof(l.Y))
.WithAnimation(animation =>
animation
.WithDuration(AnimationsSpeed ?? cartesianChart.AnimationsSpeed)
.WithEasingFunction(EasingFunction ?? cartesianChart.EasingFunction));
l.CompleteAllTransitions();
label = l;
point.Context.Label = label;
}
DataLabelsPaint.AddGeometryToPaintTask(cartesianChart.Canvas, label);
label.Text = DataLabelsFormatter(new TypedChartPoint <TModel, TVisual, TLabel, TDrawingContext>(point));
label.TextSize = dls;
label.Padding = DataLabelsPadding;
var labelPosition = GetLabelPosition(
primaryJ, y, primaryI - primaryJ, uw, label.Measure(DataLabelsPaint), DataLabelsPosition, SeriesProperties, point.PrimaryValue > Pivot);
label.X = labelPosition.X;
label.Y = labelPosition.Y;
}
}
foreach (var point in toDeletePoints)
{
if (point.Context.Chart != cartesianChart.View)
{
continue;
}
SoftDeleteOrDisposePoint(point, primaryScale, secondaryScale);
_ = everFetched.Remove(point);
}
}
