/// <summary>
/// 获取X坐标轴高度
/// </summary>
/// <returns>X坐标轴高度</returns>
protected override double PrimitiveGetXAxisHeight()
{
string labelText = this.CreateAxisText(123d);
double axisHeight = ChartHelper.MeasureLabelTextSize(this, labelText).Height;
return(base.CalculateAxisSize(axisHeight));
}
private List <double> DrawYAxisBottomToTop(Canvas axisCanvas, DateTimeAxisData axisData, double labelStepMilliseconds, double labelStepSize)
{
List <double> yList = new List <double>();
double axisHeight = axisCanvas.Height;
double bottom = ChartConstant.ZERO_D, bottom2;
DateTime time = axisData.MinValue;
double y = axisHeight;
TextBlock label;
Size labelSize = this._labelTextSize;
double heightHalf = labelSize.Height / 2;
AxisLabelLocation labelLocation = AxisLabelLocation.First;
bool addLabelControl;
double lastLabelY = axisHeight;
while (true)
{
label = ChartHelper.CreateLabelControl(this, this.CreateAxisText(time));
if (axisHeight > labelSize.Height)
{
addLabelControl = false;
switch (labelLocation)
{
case AxisLabelLocation.First:
axisCanvas.Children.Add(label);
addLabelControl = true;
Canvas.SetBottom(label, bottom);
lastLabelY = axisHeight - labelSize.Height;
labelLocation = AxisLabelLocation.Middle;
break;
case AxisLabelLocation.Middle:
bottom2 = bottom - heightHalf;
if (bottom2 > ChartConstant.ZERO_D)
{
axisCanvas.Children.Add(label);
addLabelControl = true;
Canvas.SetBottom(label, bottom2);
lastLabelY = bottom2 - labelSize.Height;
}
break;
case AxisLabelLocation.Last:
if (lastLabelY - labelSize.Height > ChartConstant.ZERO_D)
{
axisCanvas.Children.Add(label);
addLabelControl = true;
Canvas.SetTop(label, ChartConstant.ZERO_D);
}
break;
default:
throw new NotImplementedException(labelLocation.ToString());
}
if (addLabelControl)
{
if (base.IsAxisYLeft())
{
Canvas.SetLeft(label, ChartConstant.LABEL_TEXT_INTERVAL);
}
else
{
Canvas.SetRight(label, ChartConstant.LABEL_TEXT_INTERVAL);
}
}
}
if (labelLocation == AxisLabelLocation.Last)
{
if (this._showLastLabel)
{
yList.Add(y);
}
break;
}
yList.Add(y);
time = time.AddMilliseconds(labelStepMilliseconds);
if (time >= axisData.MaxValue)
{
labelStepSize = (labelStepMilliseconds - (time - axisData.MaxValue).TotalMilliseconds) * labelStepSize / labelStepMilliseconds;
double labelHeight = ChartHelper.MeasureLabelTextSize(this, axisData.MaxValue.ToString()).Height + 10d;
if (labelStepSize < labelHeight)
{
break;
}
time = axisData.MaxValue;
y = ChartConstant.ZERO_D;
labelLocation = AxisLabelLocation.Last;
}
else
{
y -= labelStepSize;
}
bottom += labelStepSize;
}
return(yList);
}
private List <double> DrawYAxisBottomToTop(Canvas axisCanvas, NumberAxisData axisData)
{
List <double> yList = new List <double>();
double axisHeight = axisCanvas.Height;
double labelStep = this.CalculateLabelStep(axisData.Area, axisHeight);
double labelStepSize = ChartHelper.CalculateLabelStepSize(axisData.Area, axisHeight, labelStep);
double labelTextLineInterval = base.GetAxisYLabelTextLineInterval();
double bottom = ChartConstant.ZERO_D, bottom2;
double value = axisData.MinValue;
double y = axisHeight;
TextBlock label;
Size labelSize;
double labelWidth = ChartConstant.ZERO_D;
AxisLabelLocation labelTextLocation = AxisLabelLocation.First;
bool addLabelControl;
double lastLabelY = axisHeight;
while (true)
{
label = ChartHelper.CreateLabelControl(this, this.CreateAxisText(value));
labelSize = UITextHelper.MeasureTextSize(label);
if (labelSize.Width - labelWidth > base._PRE)
{
labelWidth = labelSize.Width;
}
if (axisHeight > labelSize.Height)
{
addLabelControl = false;
switch (labelTextLocation)
{
case AxisLabelLocation.First:
axisCanvas.Children.Add(label);
addLabelControl = true;
Canvas.SetBottom(label, bottom);
lastLabelY = axisHeight - labelSize.Height;
labelTextLocation = AxisLabelLocation.Middle;
break;
case AxisLabelLocation.Middle:
bottom2 = bottom - labelSize.Height / 2;
if (bottom2 > ChartConstant.ZERO_D)
{
axisCanvas.Children.Add(label);
addLabelControl = true;
Canvas.SetBottom(label, bottom2);
lastLabelY = bottom2 - labelSize.Height;
}
break;
case AxisLabelLocation.Last:
if (lastLabelY - labelSize.Height > ChartConstant.ZERO_D)
{
axisCanvas.Children.Add(label);
addLabelControl = true;
Canvas.SetTop(label, ChartConstant.ZERO_D);
}
break;
default:
throw new NotImplementedException();
}
if (addLabelControl)
{
if (base.IsAxisYLeft())
{
Canvas.SetRight(label, labelTextLineInterval);
}
else
{
Canvas.SetLeft(label, labelTextLineInterval);
}
}
}
if (labelTextLocation == AxisLabelLocation.Last)
{
if (this._showLastLabel)
{
yList.Add(y);
}
break;
}
yList.Add(y);
value += labelStep;
if (value >= axisData.MaxValue)
{
labelStepSize = (labelStep - (value - axisData.MaxValue)) * labelStepSize / labelStep;
double labelHeight = ChartHelper.MeasureLabelTextSize(this, axisData.MaxValue.ToString()).Height + 10d;
if (labelStepSize < labelHeight)
{
break;
}
value = axisData.MaxValue;
y = ChartConstant.ZERO_D;
labelTextLocation = AxisLabelLocation.Last;
}
else
{
y -= labelStepSize;
}
bottom += labelStepSize;
}
axisCanvas.Width = base.CalculateAxisSize(labelWidth);
return(yList);
}
private Size MeasureLabelTextSize()
{
string labelText = this.CreateAxisText(DateTime.Parse("2020-12-12 22:22:22"));
return(ChartHelper.MeasureLabelTextSize(this, labelText));
}