/// <summary>
/// Gets the coordinates of the (rotated) background rectangle.
/// </summary>
/// <param name="position">
/// The position.
/// </param>
/// <param name="size">
/// The size.
/// </param>
/// <param name="padding">
/// The padding.
/// </param>
/// <param name="rotation">
/// The rotation.
/// </param>
/// <param name="horizontalAlignment">
/// The horizontal alignment.
/// </param>
/// <param name="verticalAlignment">
/// The vertical alignment.
/// </param>
/// <returns>
/// The background rectangle coordinates.
/// </returns>
private static IList <ScreenPoint> GetTextBounds(
ScreenPoint position,
OxySize size,
OxyThickness padding,
double rotation,
HorizontalTextAlign horizontalAlignment,
VerticalTextAlign verticalAlignment)
{
double left, right, top, bottom;
switch (horizontalAlignment)
{
case HorizontalTextAlign.Center:
left = -size.Width * 0.5;
right = -left;
break;
case HorizontalTextAlign.Right:
left = -size.Width;
right = 0;
break;
default:
left = 0;
right = size.Width;
break;
}
switch (verticalAlignment)
{
case VerticalTextAlign.Middle:
top = -size.Height * 0.5;
bottom = -top;
break;
case VerticalTextAlign.Bottom:
top = -size.Height;
bottom = 0;
break;
default:
top = 0;
bottom = size.Height;
break;
}
double cost = Math.Cos(rotation / 180 * Math.PI);
double sint = Math.Sin(rotation / 180 * Math.PI);
var u = new ScreenVector(cost, sint);
var v = new ScreenVector(-sint, cost);
var polygon = new ScreenPoint[4];
polygon[0] = position + u * (left - padding.Left) + v * (top - padding.Top);
polygon[1] = position + u * (right + padding.Right) + v * (top - padding.Top);
polygon[2] = position + u * (right + padding.Right) + v * (bottom + padding.Bottom);
polygon[3] = position + u * (left - padding.Left) + v * (bottom + padding.Bottom);
return(polygon);
}
/// <summary>
/// Adjusts the plot margins.
/// </summary>
/// <param name="rc">The render context.</param>
/// <returns><c>true</c> if the margins were adjusted.</returns>
private bool AdjustPlotMargins(IRenderContext rc)
{
var visibleAxes = this.Axes.Where(axis => axis.IsAxisVisible).ToList();
foreach (var axis in visibleAxes)
{
axis.Measure(rc);
}
var desiredMargin = new OxyThickness();
void IncludeInMargin(double size, AxisPosition borderPosition)
{
desiredMargin = borderPosition switch
{
AxisPosition.Bottom => new OxyThickness(desiredMargin.Left, desiredMargin.Top, desiredMargin.Right, Math.Max(desiredMargin.Bottom, size)),
AxisPosition.Left => new OxyThickness(Math.Max(desiredMargin.Left, size), desiredMargin.Top, desiredMargin.Right, desiredMargin.Bottom),
AxisPosition.Right => new OxyThickness(desiredMargin.Left, desiredMargin.Top, Math.Max(desiredMargin.Right, size), desiredMargin.Bottom),
AxisPosition.Top => new OxyThickness(desiredMargin.Left, Math.Max(desiredMargin.Top, size), desiredMargin.Right, desiredMargin.Bottom),
_ => desiredMargin,
};
}
// include the value of the outermost position tier on each side ('normal' axes only)
for (var position = AxisPosition.Left; position <= AxisPosition.Bottom; position++)
{
var axesOfPosition = visibleAxes.Where(a => a.Position == position);
var requiredSize = this.AdjustAxesPositions(axesOfPosition);
IncludeInMargin(requiredSize, position);
}
// include the desired margin of all visible axes (including polar axes)
foreach (var axis in visibleAxes)
{
desiredMargin = desiredMargin.Include(axis.DesiredMargin);
}
var currentMargin = this.PlotMargins;
currentMargin = new OxyThickness(
double.IsNaN(currentMargin.Left) ? desiredMargin.Left : currentMargin.Left,
double.IsNaN(currentMargin.Top) ? desiredMargin.Top : currentMargin.Top,
double.IsNaN(currentMargin.Right) ? desiredMargin.Right : currentMargin.Right,
double.IsNaN(currentMargin.Bottom) ? desiredMargin.Bottom : currentMargin.Bottom);
if (currentMargin.Equals(this.ActualPlotMargins))
{
return(false);
}
this.ActualPlotMargins = currentMargin;
return(true);
}
/// <summary>
/// Draws the rectangle as an aliased polygon.
/// (makes sure pixel alignment is the same as for lines)
/// </summary>
/// <param name="rc">
/// The render context.
/// </param>
/// <param name="rect">
/// The rectangle.
/// </param>
/// <param name="fill">
/// The fill.
/// </param>
/// <param name="stroke">
/// The stroke.
/// </param>
/// <param name="thickness">
/// The thickness.
/// </param>
public static void DrawRectangleAsPolygon(
this IRenderContext rc, OxyRect rect, OxyColor fill, OxyColor stroke, OxyThickness thickness)
{
if (thickness.Left.Equals(thickness.Right) && thickness.Left.Equals(thickness.Top) &&
thickness.Left.Equals(thickness.Bottom))
{
DrawRectangleAsPolygon(rc, rect, fill, stroke, thickness.Left);
return;
}
var sp0 = new ScreenPoint(rect.Left, rect.Top);
var sp1 = new ScreenPoint(rect.Right, rect.Top);
var sp2 = new ScreenPoint(rect.Right, rect.Bottom);
var sp3 = new ScreenPoint(rect.Left, rect.Bottom);
rc.DrawPolygon(new[] { sp0, sp1, sp2, sp3 }, fill, null, 0, null, OxyPenLineJoin.Miter, true);
rc.DrawPolygon(new[] { sp0, sp1 }, null, stroke, thickness.Top, null, OxyPenLineJoin.Miter, true);
rc.DrawPolygon(new[] { sp1, sp2 }, null, stroke, thickness.Right, null, OxyPenLineJoin.Miter, true);
rc.DrawPolygon(new[] { sp2, sp3 }, null, stroke, thickness.Bottom, null, OxyPenLineJoin.Miter, true);
rc.DrawPolygon(new[] { sp3, sp0 }, null, stroke, thickness.Left, null, OxyPenLineJoin.Miter, true);
}
public LoadTestChart(List<Heartbeat> heartbeats)
{
Background = OxyColors.Transparent;
PlotAreaBorderThickness = new OxyThickness(1, 0, 0, 1);
Padding = new OxyThickness(15, 30, 30, 20);
LegendPosition = LegendPosition.LeftTop;
LegendPlacement = LegendPlacement.Inside;
Series.Add(new LineSeries
{
ItemsSource = heartbeats,
DataFieldX = "TotalRuntime",
DataFieldY = "TotalErrors",
Color = OxyColors.Red,
Title = "Errors",
Smooth = false
});
Series.Add(new LineSeries
{
ItemsSource = heartbeats,
DataFieldX = "TotalRuntime",
DataFieldY = "TotalThreads",
Color = OxyColors.Green,
Title = "Threads",
Smooth = false
});
Series.Add(new LineSeries
{
ItemsSource = heartbeats,
DataFieldX = "TotalRuntime",
DataFieldY = "Throughput",
Color = OxyColors.DodgerBlue,
Title = "Throughput",
Smooth = false
});
}
/// <summary>
/// Increases margin size if needed, do it on the specified border.
/// </summary>
/// <param name="currentMargin">The current margin.</param>
/// <param name="minBorderSize">Minimum size of the border.</param>
/// <param name="borderPosition">The border position.</param>
private static void EnsureMarginIsBigEnough(ref OxyThickness currentMargin, double minBorderSize, AxisPosition borderPosition)
{
switch (borderPosition)
{
case AxisPosition.Bottom:
currentMargin = new OxyThickness(currentMargin.Left, currentMargin.Top, currentMargin.Right, Math.Max(currentMargin.Bottom, minBorderSize));
break;
case AxisPosition.Left:
currentMargin = new OxyThickness(Math.Max(currentMargin.Left, minBorderSize), currentMargin.Top, currentMargin.Right, currentMargin.Bottom);
break;
case AxisPosition.Right:
currentMargin = new OxyThickness(currentMargin.Left, currentMargin.Top, Math.Max(currentMargin.Right, minBorderSize), currentMargin.Bottom);
break;
case AxisPosition.Top:
currentMargin = new OxyThickness(currentMargin.Left, Math.Max(currentMargin.Top, minBorderSize), currentMargin.Right, currentMargin.Bottom);
break;
default:
throw new NotImplementedException();
}
}
/// <summary>
/// Determines whether this instance and another specified <see cref="T:OxyThickness" /> object have the same value.
/// </summary>
/// <param name="other">The thickness to compare to this instance.</param>
/// <returns><c>true</c> if the value of the <paramref name="other" /> parameter is the same as the value of this instance; otherwise, <c>false</c>.</returns>
public bool Equals(OxyThickness other)
{
return(this.Left.Equals(other.Left) && this.Top.Equals(other.Top) && this.Width.Equals(other.Width) && this.Height.Equals(other.Height));
}
/// <summary>
/// Draws the rectangle as an aliased polygon.
/// (makes sure pixel alignment is the same as for lines)
/// </summary>
/// <param name="rc">
/// The render context.
/// </param>
/// <param name="rect">
/// The rectangle.
/// </param>
/// <param name="fill">
/// The fill.
/// </param>
/// <param name="stroke">
/// The stroke.
/// </param>
/// <param name="thickness">
/// The thickness.
/// </param>
public static void DrawRectangleAsPolygon(
this IRenderContext rc, OxyRect rect, OxyColor fill, OxyColor stroke, OxyThickness thickness)
{
if (thickness.Left == thickness.Right && thickness.Left == thickness.Top
&& thickness.Left == thickness.Bottom)
{
DrawRectangleAsPolygon(rc, rect, fill, stroke, thickness.Left);
return;
}
var sp0 = new ScreenPoint(rect.Left, rect.Top);
var sp1 = new ScreenPoint(rect.Right, rect.Top);
var sp2 = new ScreenPoint(rect.Right, rect.Bottom);
var sp3 = new ScreenPoint(rect.Left, rect.Bottom);
rc.DrawPolygon(new[] { sp0, sp1, sp2, sp3 }, fill, null, 0, null, OxyPenLineJoin.Miter, true);
rc.DrawPolygon(new[] { sp0, sp1 }, null, stroke, thickness.Top, null, OxyPenLineJoin.Miter, true);
rc.DrawPolygon(new[] { sp1, sp2 }, null, stroke, thickness.Right, null, OxyPenLineJoin.Miter, true);
rc.DrawPolygon(new[] { sp2, sp3 }, null, stroke, thickness.Bottom, null, OxyPenLineJoin.Miter, true);
rc.DrawPolygon(new[] { sp3, sp0 }, null, stroke, thickness.Left, null, OxyPenLineJoin.Miter, true);
}
/// <summary>
/// Creates a new <see cref="OxyThickness"/> with the maximum dimensions of this instance and the specified other instance.
/// </summary>
/// <param name="other">The other instance.</param>
/// <returns>A new <see cref="OxyThickness"/>.</returns>
public OxyThickness Include(OxyThickness other)
{
return(new OxyThickness(Math.Max(other.Left, this.Left), Math.Max(other.Top, this.Top), Math.Max(other.Right, this.Right), Math.Max(other.Bottom, this.Bottom)));
}
/// <summary>
/// Determines whether this instance and another specified <see cref="T:OxyThickness" /> object have the same value.
/// </summary>
/// <param name="other">The thickness to compare to this instance.</param>
/// <returns><c>true</c> if the value of the <paramref name="other" /> parameter is the same as the value of this instance; otherwise, <c>false</c>.</returns>
public bool Equals(OxyThickness other)
{
return(this.Left.Equals(other.Left) && this.Top.Equals(other.Top) && this.Right.Equals(other.Right) && this.Bottom.Equals(other.Bottom));
}
/// <summary>
/// Gets the coordinates of the (rotated) background rectangle.
/// </summary>
/// <param name="position">
/// The position.
/// </param>
/// <param name="size">
/// The size.
/// </param>
/// <param name="padding">
/// The padding.
/// </param>
/// <param name="rotation">
/// The rotation.
/// </param>
/// <param name="horizontalAlignment">
/// The horizontal alignment.
/// </param>
/// <param name="verticalAlignment">
/// The vertical alignment.
/// </param>
/// <returns>
/// The background rectangle coordinates.
/// </returns>
private static IList<ScreenPoint> GetTextBounds(
ScreenPoint position,
OxySize size,
OxyThickness padding,
double rotation,
HorizontalTextAlign horizontalAlignment,
VerticalTextAlign verticalAlignment)
{
double left, right, top, bottom;
switch (horizontalAlignment)
{
case HorizontalTextAlign.Center:
left = -size.Width * 0.5;
right = -left;
break;
case HorizontalTextAlign.Right:
left = -size.Width;
right = 0;
break;
default:
left = 0;
right = size.Width;
break;
}
switch (verticalAlignment)
{
case VerticalTextAlign.Middle:
top = -size.Height * 0.5;
bottom = -top;
break;
case VerticalTextAlign.Bottom:
top = -size.Height;
bottom = 0;
break;
default:
top = 0;
bottom = size.Height;
break;
}
double cost = Math.Cos(rotation / 180 * Math.PI);
double sint = Math.Sin(rotation / 180 * Math.PI);
var u = new ScreenVector(cost, sint);
var v = new ScreenVector(-sint, cost);
var polygon = new ScreenPoint[4];
polygon[0] = position + u * (left - padding.Left) + v * (top - padding.Top);
polygon[1] = position + u * (right + padding.Right) + v * (top - padding.Top);
polygon[2] = position + u * (right + padding.Right) + v * (bottom + padding.Bottom);
polygon[3] = position + u * (left - padding.Left) + v * (bottom + padding.Bottom);
return polygon;
}
/// <summary>
/// Increases margin size if needed, do it on the specified border.
/// </summary>
/// <param name="currentMargin">The current margin.</param>
/// <param name="minBorderSize">Minimum size of the border.</param>
/// <param name="borderPosition">The border position.</param>
private static void EnsureMarginIsBigEnough(ref OxyThickness currentMargin, double minBorderSize, AxisPosition borderPosition)
{
switch (borderPosition)
{
case AxisPosition.Bottom:
currentMargin.Bottom = Math.Max(currentMargin.Bottom, minBorderSize);
break;
case AxisPosition.Left:
currentMargin.Left = Math.Max(currentMargin.Left, minBorderSize);
break;
case AxisPosition.Right:
currentMargin.Right = Math.Max(currentMargin.Right, minBorderSize);
break;
case AxisPosition.Top:
currentMargin.Top = Math.Max(currentMargin.Top, minBorderSize);
break;
default:
throw new NotImplementedException();
}
}
/// <summary>
/// Returns a rectangle that is shrunk by the specified thickness, in all directions.
/// </summary>
/// <param name="t">The thickness to apply to the rectangle.</param>
/// <returns>The deflated <see cref="OxyRect" />.</returns>
public OxyRect Deflate(OxyThickness t)
{
return(new OxyRect(this.left + t.Left, this.top + t.Top, Math.Max(0, this.width - t.Left - t.Right), Math.Max(0, this.height - t.Top - t.Bottom)));
}
/// <summary>
/// Returns a rectangle that is expanded by the specified thickness, in all directions.
/// </summary>
/// <param name="t">The thickness to apply to the rectangle.</param>
/// <returns>The inflated <see cref="OxyRect" />.</returns>
public OxyRect Inflate(OxyThickness t)
{
return(new OxyRect(this.left - t.Left, this.top - t.Top, this.width + t.Left + t.Right, this.height + t.Top + t.Bottom));
}
/// <summary>
/// Determines whether this instance and another specified <see cref="T:OxyThickness" /> object have the same value.
/// </summary>
/// <param name="other">The thickness to compare to this instance.</param>
/// <returns><c>true</c> if the value of the <paramref name="other" /> parameter is the same as the value of this instance; otherwise, <c>false</c>.</returns>
public bool Equals(OxyThickness other)
{
return this.Left.Equals(other.Left) && this.Top.Equals(other.Top) && this.Width.Equals(other.Width) && this.Height.Equals(other.Height);
}
/// <summary>
/// Draws the outline of a rectangle with individual stroke thickness for each side.
/// </summary>
/// <param name="rc">The render context.</param>
/// <param name="rect">The rectangle.</param>
/// <param name="stroke">The stroke color.</param>
/// <param name="thickness">The thickness.</param>
/// <param name="edgeRenderingMode">The edge rendering mode.</param>
public static void DrawRectangle(this IRenderContext rc, OxyRect rect, OxyColor stroke, OxyThickness thickness, EdgeRenderingMode edgeRenderingMode)
{
if (thickness.Left.Equals(thickness.Right) && thickness.Left.Equals(thickness.Top) && thickness.Left.Equals(thickness.Bottom))
{
rc.DrawRectangle(rect, OxyColors.Undefined, stroke, thickness.Left, edgeRenderingMode);
return;
}
var adjustedLeft = rect.Left - thickness.Left / 2 + 0.5;
var adjustedRight = rect.Right + thickness.Right / 2 - 0.5;
var adjustedTop = rect.Top - thickness.Top / 2 + 0.5;
var adjustedBottom = rect.Bottom + thickness.Bottom / 2 - 0.5;
var pointsTop = new[] { new ScreenPoint(adjustedLeft, rect.Top), new ScreenPoint(adjustedRight, rect.Top) };
var pointsRight = new[] { new ScreenPoint(rect.Right, adjustedTop), new ScreenPoint(rect.Right, adjustedBottom) };
var pointsBottom = new[] { new ScreenPoint(adjustedLeft, rect.Bottom), new ScreenPoint(adjustedRight, rect.Bottom) };
var pointsLeft = new[] { new ScreenPoint(rect.Left, adjustedTop), new ScreenPoint(rect.Left, adjustedBottom) };
rc.DrawLine(pointsTop, stroke, thickness.Top, edgeRenderingMode, null, LineJoin.Miter);
rc.DrawLine(pointsRight, stroke, thickness.Right, edgeRenderingMode, null, LineJoin.Miter);
rc.DrawLine(pointsBottom, stroke, thickness.Bottom, edgeRenderingMode, null, LineJoin.Miter);
rc.DrawLine(pointsLeft, stroke, thickness.Left, edgeRenderingMode, null, LineJoin.Miter);
}