/// <summary>
/// Renders a bar chart on the canvas. This method is called by the Chart class.
/// </summary>
/// <param name="canvasWrapper">wrapper class containing info mation about the canvas and chart</param>
/// <param name="axis">Axis orientation object</param>
/// <param name="minMax">Data for the extreme values</param>
/// <param name="gridPaint">Paint object for the grid lines</param>
public override void RenderChart(CanvasWrapper canvasWrapper, Axis axis, IMinMax minMax)
{
CheckConstructionPolicy(nameof(BarChart));
var drawingSpace = canvasWrapper.ChartArea.Right / ConstructionData.Count() * 0.9;
var rectSpace = (float)drawingSpace / canvasWrapper.NumberOfCharts;
var columnSpace = (float)((canvasWrapper.ChartArea.Right / ConstructionData.Count()) - drawingSpace) / 2;
var pointX = canvasWrapper.ChartArea.Width / ConstructionData.Count();
var counter = 0;
foreach (var point in ConstructionData)
{
var x1 = (pointX * counter) + canvasWrapper.ChartArea.Left + columnSpace +
(canvasWrapper.NumberPlottedChart * rectSpace);
var x2 = x1 + rectSpace - columnSpace;
var rect = new SKRect(x1, point.Y, x2, canvasWrapper.ChartArea.Top);
_chartPaint.IsStroke = IsStroked;
canvasWrapper.Canvas.DrawRect(rect, _chartPaint);
var xLabel = XLabel[counter];
axis.DrawAndPositionXTickMark(xLabel, (x1 + (x2 - x1) / 2),
canvasWrapper.ChartArea.Bottom, _labelPaint);
var yLabel = GetYLabel(OriginalData.ElementAt(counter).Y);
axis.DrawAndPositionYTickMark(yLabel, point.Y, (x1 + (x2 - x1) / 2), _labelPaint);
counter++;
}
canvasWrapper.NumberPlottedChart += 1;
}
private void RenderYTickMark(CanvasWrapper canvasWrapper, Axis axis, int counter, SKPoint point, SKRect rect)
{
var yLabel = GetYLabel(OriginalData.ElementAt(counter).Y);
_labelPaint.TextSize = canvasWrapper.LabelTextSize;
axis.DrawAndPositionYTickMark(yLabel, point.Y, rect.Left, _labelPaint);
}
public override void RenderChart(CanvasWrapper canvasWrapper, Axis axis, IMinMax minMax)
{
var divisor = 2.5f;
var strokeWidth = 30;
if (canvasWrapper.NumberOfCharts > 6)
{
switch (Device.RuntimePlatform)
{
case Device.WPF:
case Device.GTK:
case Device.macOS:
case Device.UWP: {
divisor = 2.0f;
strokeWidth = 15;
break;
}
default: {
divisor = 1.5f;
strokeWidth = 30;
break;
}
}
;
}
var chartArea = canvasWrapper.ChartArea;
var canvas = canvasWrapper.Canvas;
var radius = Math.Min(chartArea.MidX, chartArea.MidY) / divisor;
radius = radius - (canvasWrapper.NumberPlottedChart * strokeWidth);
_chartPaint.StrokeWidth = strokeWidth;
_chartPaint.Style = SKPaintStyle.Stroke;
var teta = 360 - ((minMax.Ymax - OriginalData.ElementAt(0).Y) / (minMax.Ymax - minMax.Ymin) * 360);
var rect = new SKRect(chartArea.MidX - radius, chartArea.MidY - radius, chartArea.MidX + radius, chartArea.MidY + radius);
var path = new SKPath();
path.AddArc(rect, 90, -teta);
canvas.DrawPath(path, _chartPaint);
_chartPaint.Color = ChartColor.WithAlpha(70);
canvas.DrawCircle(chartArea.MidX, chartArea.MidY, radius, _chartPaint);
canvasWrapper.NumberPlottedChart += 1;
_chartPaint.Color = ChartColor;
ChartName = $"{Label} : {Value}";
RenderLegend(canvasWrapper, axis, canvas, PointPlotVariant.ScatterChart);
}
/// <summary>
/// Renders a bar chart on the canvas. This method is called by the Chart class.
/// </summary>
/// <param name="canvasWrapper">wrapper class containing info mation about the canvas and chart</param>
/// <param name="axis">Axis orientation object</param>
/// <param name="minMax">Data for the extreme values</param>
/// <param name="gridPaint">Paint object for the grid lines</param>
public override void RenderChart(CanvasWrapper canvasWrapper, Axis axis, IMinMax minMax)
{
CheckConstructionPolicy(nameof(BarChart));
var count = ConstructionData.Count();
var drawingSpace = canvasWrapper.ChartArea.Right / count * 0.9;
var rectSpace = (float)drawingSpace / canvasWrapper.NumberOfCharts;
var columnSpace = (float)((canvasWrapper.ChartArea.Right / count) - drawingSpace) / 2;
var pointX = canvasWrapper.ChartArea.Width / count;
var counter = 0;
foreach (var point in ConstructionData)
{
var x1 = (pointX * counter) + canvasWrapper.ChartArea.Left + columnSpace +
(canvasWrapper.NumberPlottedChart * rectSpace);
var x2 = x1 + rectSpace - columnSpace;
var rect = new SKRect(x1, point.Y, x2, canvasWrapper.ChartArea.Top);
_chartPaint.IsStroke = IsStroked;
canvasWrapper.Canvas.DrawRect(rect, _chartPaint);
var xLabel = XLabel[counter];
_labelPaint.TextSize = canvasWrapper.LabelTextSize;
if (canvasWrapper.NumberPlottedChart == 0)
{
RenderXTickMark(canvasWrapper, axis, x1, x2, xLabel);
var yLabel = GetYLabel(OriginalData.ElementAt(counter).Y);
if (yLabel.Trim().Length > 5)
{
canvasWrapper.DrawYTickMarkOnBars = false;
DrawVerticalLabels(canvasWrapper, axis, minMax);
}
}
if (canvasWrapper.DrawYTickMarkOnBars)
{
RenderYTickMark(canvasWrapper, axis, counter, point, rect);
}
counter++;
}
canvasWrapper.NumberPlottedChart += 1;
if (canvasWrapper.CanShowLegend)
{
RenderLegend(canvasWrapper, axis, canvasWrapper.Canvas, PointPlotVariant.AreaChart);
}
}
public override float InitialCalculations(IMinMax minMax)
{
Angel = 360 - ((minMax.Ymax - OriginalData.ElementAt(0).Y) / (minMax.Ymax - minMax.Ymin) * 360);
return(Angel);
}
