private void RotateLabelBottom(TextBlock label, AngleQuadrantInfo angleQuadrantInfo, Size labelTextSize)
{
if (!angleQuadrantInfo.Rotate)
{
return;
}
var transformGroup = new TransformGroup();
var rotateTransform = new RotateTransform();
rotateTransform.CenterX = ChartConstant.ZERO_D;
rotateTransform.CenterY = ChartConstant.ZERO_D;
rotateTransform.Angle = angleQuadrantInfo.Angle;
transformGroup.Children.Add(rotateTransform);
var translateTransform = new TranslateTransform();
double x, y;
switch (angleQuadrantInfo.Quadrant)
{
case Quadrant.One: //angle:270-360°
x = labelTextSize.Width * Math.Sin(angleQuadrantInfo.Radians);
y = labelTextSize.Width * Math.Cos(angleQuadrantInfo.Radians);
translateTransform.X = labelTextSize.Width / 2 - x;
translateTransform.Y = y;
break;
case Quadrant.Two: //angle:180-270°
x = labelTextSize.Width * Math.Cos(angleQuadrantInfo.Radians) - labelTextSize.Height * Math.Sin(angleQuadrantInfo.Radians);
y = labelTextSize.Width * Math.Sin(angleQuadrantInfo.Radians) + labelTextSize.Height * Math.Cos(angleQuadrantInfo.ModRadians);
translateTransform.X = labelTextSize.Width / 2 + x;
translateTransform.Y = y;
break;
case Quadrant.Three: //angle:90-180°
x = labelTextSize.Height * Math.Sin(angleQuadrantInfo.ModRadians);
y = labelTextSize.Height * Math.Cos(angleQuadrantInfo.ModRadians);;
translateTransform.X = labelTextSize.Width / 2 + x;
translateTransform.Y = y;
break;
case Quadrant.Four: //angle:0-90°
translateTransform.X = labelTextSize.Width / 2;
translateTransform.Y = ChartConstant.ZERO_D;
break;
default:
throw new NotImplementedException(angleQuadrantInfo.Quadrant.ToString());
}
transformGroup.Children.Add(translateTransform);
label.RenderTransform = transformGroup;
}
private List <double> DrawX(Canvas axisCanvas)
{
double labelStepSize = this.CalculateLabelStepSize(this._axisData.Count, axisCanvas.Width);
double columnSeriesOffset = this.CalculateSeriesSize(this._seriesSizeDic, labelStepSize);
TextBlock label;
var angleQuadrantInfo = new AngleQuadrantInfo(this._angle, base._PRE);
Size labelTextSize;
double left = 0d, labelTextOffset;
AxisLabelLocation labelLocation = AxisLabelLocation.First;
object labelObj;
LabelSeriesItem labelItem;
List <double> xList = new List <double>();
double labelStepSizeHalf = labelStepSize / 2;
double x;
for (int i = 0; i < this._axisData.Count; i++)
{
labelObj = this._axisData.ElementAt(i).Key;
labelItem = this._axisData.ElementAt(i).Value;
label = ChartHelper.CreateLabelControl(this, this.CreateAxisText(labelObj));
labelTextSize = UITextHelper.MeasureTextSize(label);
axisCanvas.Children.Add(label);
labelTextOffset = (labelStepSize - labelTextSize.Width) / 2;
Canvas.SetLeft(label, left + labelTextOffset);
if (this.IsAxisXBottom())
{
Canvas.SetTop(label, ChartConstant.LABEL_TEXT_INTERVAL);
this.RotateLabelBottom(label, angleQuadrantInfo, labelTextSize);
}
else
{
Canvas.SetBottom(label, ChartConstant.LABEL_TEXT_INTERVAL);
this.RotateLabelTop(label, angleQuadrantInfo, labelTextSize);
}
switch (labelLocation)
{
case AxisLabelLocation.First:
x = columnSeriesOffset;
labelLocation = AxisLabelLocation.Middle;
break;
case AxisLabelLocation.Middle:
case AxisLabelLocation.Last:
x = left + columnSeriesOffset;
break;
default:
throw new NotImplementedException(labelLocation.ToString());
}
foreach (var key in labelItem.Keys.ToArray())
{
labelItem[key] = x;
x += labelItem.Series.Size;
}
xList.Add(left + labelStepSizeHalf);
left += labelStepSize;
}
ChartHelper.DrawXAxisLabelLine(this, axisCanvas, ChartConstant.ZERO_D, axisCanvas.Height);
return(xList);
}