public static List <PiePartGeometry> GetPieChart(ICanvasResourceCreator resourceCreator,
float[] valueList, ChartTextFormat textFormat, float radius, bool isShowData)
{
var centerPoint = new Vector2(radius, radius);
var geoList = new List <PiePartGeometry>();
var sum = valueList.Sum();
var startAngle = 0f;
var percentList = valueList.Select(o => o / sum);
foreach (var item in percentList)
{
var radian = item * 2 * Math.PI;
var builder = new CanvasPathBuilder(resourceCreator);
builder.BeginFigure(centerPoint);
builder.AddArc(centerPoint, radius, radius, startAngle, (float)radian);
builder.EndFigure(CanvasFigureLoop.Closed);
if (isShowData)
{
var partCenter = new Point(
(radius - textFormat.Thickness.Top) * Math.Cos(startAngle + radian / 2) + centerPoint.X,
(radius - textFormat.Thickness.Top) * Math.Sin(startAngle + radian / 2) + centerPoint.Y)
.ToVector2();
var textLayout = ChartDrawHelper.CreateCanvasText(resourceCreator,
$"{string.Format("{0:F1}", item * 100)}%", textFormat);
var textRect = textLayout.DrawBounds;
var textPos = new Point(partCenter.X - textRect.Width / 2, partCenter.Y - textRect.Height / 2);
var part = new PiePartGeometry
{
ShapeGeometry = CanvasGeometry.CreatePath(builder),
TextGeometry = CanvasGeometry.CreateText(textLayout),
DataRect = new Rect(textPos, new Size(textRect.Width, textRect.Height))
};
geoList.Add(part);
builder.Dispose();
textLayout.Dispose();
}
else
{
var part = new PiePartGeometry
{
ShapeGeometry = CanvasGeometry.CreatePath(builder)
};
geoList.Add(part);
builder.Dispose();
}
startAngle += (float)radian;
}
return(geoList);
}
public static ICanvasImage CreateValueMarker(ICanvasResourceCreator resourceCreator,
ChartTextFormat markerFormat, List <Vector2> positions, List <string> labels, MarkerPosition markerPosition)
{
if (positions?.Count > 0 && positions.Count == labels?.Count)
{
var commandList = new CanvasCommandList(resourceCreator);
using (var drawSession = commandList.CreateDrawingSession())
{
var cancasTextArray =
labels.Select(o => CreateCanvasText(resourceCreator, o, markerFormat)).ToArray();
for (int i = 0; i < positions.Count; i++)
{
var textRect = cancasTextArray[i].DrawBounds;
double x = positions[i].X, y = positions[i].Y;
switch (markerPosition)
{
case MarkerPosition.Top:
x -= textRect.Width / 2 + textRect.X;
y -= textRect.Height + textRect.Y + markerFormat.Thickness.Bottom;
break;
case MarkerPosition.Right:
x += markerFormat.Thickness.Left - textRect.X;
y -= textRect.Height / 2 + textRect.Y;
break;
case MarkerPosition.Bottom:
x -= textRect.Width / 2 + textRect.X;
y += -textRect.Y + markerFormat.Thickness.Top;
break;
case MarkerPosition.Left:
x -= textRect.Width + markerFormat.Thickness.Right - textRect.X;
y -= textRect.Height / 2 + textRect.Y;
break;
}
drawSession.DrawTextLayout(cancasTextArray[i], (float)x, (float)y,
ColorConverter.ConvertHexToColor(markerFormat.Foreground));
cancasTextArray[i].Dispose();
}
}
return(commandList);
}
return(null);
}
public static CanvasTextLayout CreateCanvasText(ICanvasResourceCreator resourceCreator, string text,
ChartTextFormat textFormat, float requestedWidth = 0, float requestedHeight = 0)
{
var textLayout = new CanvasTextLayout(resourceCreator, text,
new CanvasTextFormat
{
FontWeight = new Windows.UI.Text.FontWeight
{
Weight = textFormat.IsBold?(ushort)700: (ushort)400
},
FontFamily = textFormat.FontFamily,
FontSize = textFormat.FontSize,
WordWrapping = CanvasWordWrapping.NoWrap,
TrimmingSign = CanvasTrimmingSign.Ellipsis
}, requestedWidth, requestedHeight);
return(textLayout);
}
public static List <PolyLineGeometry> GetLineChart(ICanvasResourceCreator resourceCreator, LineChartStyle style,
List <float[]> valuesList, float height, float width, ChartTextFormat dataLabelFormat,
List <string> colorSpace)
{
var geoList = new List <PolyLineGeometry>();
var max = valuesList.Select(o => o.Max()).Max();
var pointNum = valuesList[0].Length;
var pointGap = width / (pointNum - 1);
for (int i = 0; i < valuesList.Count; i++)
{
var list = valuesList[i];
var markerPoints = new List <Vector2>();
var markerStrs = new List <string>();
var dotList = new List <CanvasGeometry>();
var builder = new CanvasPathBuilder(resourceCreator);
var heightList = list.Select(o => (float)(o / max * height)).ToList();
var offset = 0f;
var first = heightList.First();
var startPoint = new Vector2(offset, -first);
builder.BeginFigure(startPoint);
dotList.Add(GetDotGeometry(resourceCreator, style.DotShape, startPoint, style.DotSizeWidth,
style.DotSizeHeight));
markerPoints.Add(startPoint);
markerStrs.Add($"{list[0]}");
heightList.Remove(first);
for (int j = 0; j < heightList.Count; j++)
{
offset += pointGap;
var point = new Vector2(offset, -heightList[j]);
builder.AddLine(point);
dotList.Add(GetDotGeometry(resourceCreator, style.DotShape, point, style.DotSizeWidth,
style.DotSizeHeight));
markerPoints.Add(point);
markerStrs.Add($"{list[j + 1]}");
}
builder.EndFigure(CanvasFigureLoop.Open);
var format = dataLabelFormat.Clone();
//format.Foreground = colorSpace[i % colorSpace.Count];
format.Thickness = new ChartThickness(0, format.Thickness.Top + style.DotSizeHeight / 2, 0, 0);
var polyLineGeometry = new PolyLineGeometry
{
LineGeometry = CanvasGeometry.CreatePath(builder),
DotGeometries = dotList,
DataLabels = ChartDrawHelper.CreateValueMarker(resourceCreator, format, markerPoints,
markerStrs,
MarkerPosition.Bottom),
};
geoList.Add(polyLineGeometry);
}
return(geoList);
}
public static List <BarGroupGeometry> GetBarChart(ICanvasResourceCreator resourceCreator,
List <float[]> valuesList, float height, float barWidth, float barBorderWidth,
float barGap, float groupGap, ChartTextFormat dataLabelFormat)
{
var geoList = new List <BarGroupGeometry>();
var max = valuesList.Select(o => o.Max()).Max();
var barNum = valuesList.Count;
var totalGroupGap = (barWidth + barBorderWidth + barGap) * barNum + groupGap - barGap;
var offset = 0f;
foreach (var list in valuesList)
{
var builder = new CanvasPathBuilder(resourceCreator);
var heightList = list.Select(o => (float)(o / max * height)).ToArray();
var startPoint = new Vector2();
var markerPoints = new List <Vector2>();
var markerStrs = new List <string>();
for (int i = 0; i < heightList.Count(); i++)
{
builder.BeginFigure(startPoint);
builder.AddLine(new Vector2(startPoint.X, startPoint.Y - heightList[i]));
builder.AddLine(new Vector2(startPoint.X + barWidth, startPoint.Y - heightList[i]));
builder.AddLine(new Vector2(startPoint.X + barWidth, startPoint.Y));
builder.EndFigure(CanvasFigureLoop.Open);
var markerPoint = new Vector2(startPoint.X + barWidth / 2, startPoint.Y - heightList[i]);
markerPoints.Add(markerPoint);
markerStrs.Add($"{list[i]}");
startPoint = new Vector2(startPoint.X + totalGroupGap, startPoint.Y);
}
geoList.Add(new BarGroupGeometry
{
ShapeGeometry = CanvasGeometry.CreatePath(builder),
DataLabels = ChartDrawHelper.CreateValueMarker(resourceCreator, dataLabelFormat, markerPoints,
markerStrs,
MarkerPosition.Bottom),
Offset = offset
});
builder.Dispose();
offset += barGap + barWidth + barBorderWidth;
}
return(geoList);
}
